Merge pull request #6641 from nupplaphil/config_followup

Config FollowUp

bin/auth_ejabberd.php

@@ -32,10 +32,7 @@
  *
  */
 
-use Friendica\App;
-use Friendica\Core\Config;
 use Friendica\Factory;
-use Friendica\Util\BasePath;
 use Friendica\Util\ExAuth;
 
 if (sizeof($_SERVER["argv"]) == 0) {
@@ -54,12 +51,7 @@ chdir($directory);
 
 require dirname(__DIR__) . '/vendor/autoload.php';
 
-$basedir = BasePath::create(dirname(__DIR__), $_SERVER);
+$a = Factory\DependencyFactory::setUp('auth_ejabbered', dirname(__DIR__));
-$configLoader = new Config\ConfigCacheLoader($basedir);
-$config = Factory\ConfigFactory::createCache($configLoader);
-$logger = Factory\LoggerFactory::create('auth_ejabberd', $config);
-
-$a = new App($config, $logger);
 
 if ($a->getMode()->isNormal()) {
 	$oAuth = new ExAuth();

bin/console.php

@@ -3,16 +3,9 @@
 
 require dirname(__DIR__) . '/vendor/autoload.php';
 
-use Friendica\Core\Config;
 use Friendica\Factory;
-use Friendica\Util\BasePath;
 
-$basedir = BasePath::create(dirname(__DIR__), $_SERVER);
+$a = Factory\DependencyFactory::setUp('console', dirname(__DIR__));
-$configLoader = new Config\ConfigCacheLoader($basedir);
-$config = Factory\ConfigFactory::createCache($configLoader);
-$logger = Factory\LoggerFactory::create('console', $config);
-
-$a = new Friendica\App($config, $logger);
 \Friendica\BaseObject::setApp($a);
 
 (new Friendica\Core\Console($argv))->execute();

bin/daemon.php

@@ -7,12 +7,11 @@
  * This script was taken from http://php.net/manual/en/function.pcntl-fork.php
  */
 
-use Friendica\App;
 use Friendica\Core\Config;
+use Friendica\Core\Logger;
 use Friendica\Core\Worker;
 use Friendica\Database\DBA;
 use Friendica\Factory;
-use Friendica\Util\BasePath;
 
 // Get options
 $shortopts = 'f';
@@ -33,12 +32,7 @@ if (!file_exists("boot.php") && (sizeof($_SERVER["argv"]) != 0)) {
 
 require dirname(__DIR__) . '/vendor/autoload.php';
 
-$basedir = BasePath::create(dirname(__DIR__), $_SERVER);
+$a = Factory\DependencyFactory::setUp('daemon', dirname(__DIR__));
-$configLoader = new Config\ConfigCacheLoader($basedir);
-$config = Factory\ConfigFactory::createCache($configLoader);
-$logger = Factory\LoggerFactory::create('daemon', $config);
-
-$a = new App($config, $logger);
 
 if ($a->getMode()->isInstall()) {
 	die("Friendica isn't properly installed yet.\n");
@@ -108,7 +102,7 @@ if ($mode == "stop") {
 
 	unlink($pidfile);
 
-	$logger->notice("Worker daemon process was killed", ["pid" => $pid]);
+	Logger::notice("Worker daemon process was killed", ["pid" => $pid]);
 
 	Config::set('system', 'worker_daemon_mode', false);
 	die("Worker daemon process $pid was killed.\n");
@@ -118,7 +112,7 @@ if (!empty($pid) && posix_kill($pid, 0)) {
 	die("Daemon process $pid is already running.\n");
 }
 
-$logger->notice('Starting worker daemon.', ["pid" => $pid]);
+Logger::notice('Starting worker daemon.', ["pid" => $pid]);
 
 if (!$foreground) {
 	echo "Starting worker daemon.\n";
@@ -150,7 +144,7 @@ if (!$foreground) {
 	file_put_contents($pidfile, $pid);
 
 	// We lose the database connection upon forking
-	$a->loadDatabase();
+	Factory\DBFactory::init($a->getConfigCache(), $a->getProfiler(), $_SERVER);
 }
 
 Config::set('system', 'worker_daemon_mode', true);
@@ -166,7 +160,7 @@ $last_cron = 0;
 // Now running as a daemon.
 while (true) {
 	if (!$do_cron && ($last_cron + $wait_interval) < time()) {
-		$logger->info('Forcing cron worker call.', ["pid" => $pid]);
+		Logger::info('Forcing cron worker call.', ["pid" => $pid]);
 		$do_cron = true;
 	}
 
@@ -180,7 +174,7 @@ while (true) {
 		$last_cron = time();
 	}
 
-	$logger->info("Sleeping", ["pid" => $pid]);
+	Logger::info("Sleeping", ["pid" => $pid]);
 	$start = time();
 	do {
 		$seconds = (time() - $start);
@@ -197,10 +191,10 @@ while (true) {
 
 	if ($timeout) {
 		$do_cron = true;
-		$logger->info("Woke up after $wait_interval seconds.", ["pid" => $pid, 'sleep' => $wait_interval]);
+		Logger::info("Woke up after $wait_interval seconds.", ["pid" => $pid, 'sleep' => $wait_interval]);
 	} else {
 		$do_cron = false;
-		$logger->info("Worker jobs are calling to be forked.", ["pid" => $pid]);
+		Logger::info("Worker jobs are calling to be forked.", ["pid" => $pid]);
 	}
 }
 

bin/worker.php

@@ -10,7 +10,6 @@ use Friendica\Core\Config;
 use Friendica\Core\Update;
 use Friendica\Core\Worker;
 use Friendica\Factory;
-use Friendica\Util\BasePath;
 
 // Get options
 $shortopts = 'sn';
@@ -31,12 +30,7 @@ if (!file_exists("boot.php") && (sizeof($_SERVER["argv"]) != 0)) {
 
 require dirname(__DIR__) . '/vendor/autoload.php';
 
-$basedir = BasePath::create(dirname(__DIR__), $_SERVER);
+$a = Factory\DependencyFactory::setUp('worker', dirname(__DIR__));
-$configLoader = new Config\ConfigCacheLoader($basedir);
-$config = Factory\ConfigFactory::createCache($configLoader);
-$logger = Factory\LoggerFactory::create('worker', $config);
-
-$a = new App($config, $logger);
 
 // Check the database structure and possibly fixes it
 Update::check($a->getBasePath(), true);

composer.json

@@ -34,13 +34,15 @@
 		"lightopenid/lightopenid": "dev-master",
 		"michelf/php-markdown": "^1.7",
 		"mobiledetect/mobiledetectlib": "2.8.*",
+		"monolog/monolog": "^1.24",
 		"paragonie/random_compat": "^2.0",
-		"pear/Text_LanguageDetect": "1.*",
+		"pear/text_languagedetect": "1.*",
+		"psr/container": "^1.0",
 		"seld/cli-prompt": "^1.0",
 		"smarty/smarty": "^3.1",
 		"fxp/composer-asset-plugin": "~1.3",
 		"bower-asset/base64": "^1.0",
-		"bower-asset/Chart-js": "^2.7",
+		"bower-asset/chart-js": "^2.7",
 		"bower-asset/perfect-scrollbar": "^0.6",
 		"bower-asset/vue": "^2.5",
 		"npm-asset/jquery": "^2.0",
@@ -49,8 +51,7 @@
 		"npm-asset/jgrowl": "^1.4",
 		"npm-asset/fullcalendar": "^3.0.1",
 		"npm-asset/cropperjs": "1.2.2",
-		"npm-asset/imagesloaded": "4.1.4",
+		"npm-asset/imagesloaded": "4.1.4"
-		"monolog/monolog": "^1.24"
 	},
 	"repositories": [
 		{
@@ -96,7 +97,7 @@
 		"phpunit/dbunit": "^2.0",
 		"phpdocumentor/reflection-docblock": "^3.0.2",
 		"phpunit/php-token-stream": "^1.4.2",
-		"mikey179/vfsStream": "^1.6",
+		"mikey179/vfsstream": "^1.6",
 		"mockery/mockery": "^1.2",
 		"johnkary/phpunit-speedtrap": "1.1"
 	},

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "b944adfb6ede89430ba3b7e9ebb45acb",
+    "content-hash": "19fabb14e0dd5d806ef841e51d5f6a0b",
     "packages": [
         {
             "name": "asika/simple-console",
@@ -1882,6 +1882,55 @@
             ],
             "time": "2016-08-06T20:24:11+00:00"
         },
+        {
+            "name": "psr/container",
+            "version": "1.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/container.git",
+                "reference": "b7ce3b176482dbbc1245ebf52b181af44c2cf55f"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/container/zipball/b7ce3b176482dbbc1245ebf52b181af44c2cf55f",
+                "reference": "b7ce3b176482dbbc1245ebf52b181af44c2cf55f",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Container\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Common Container Interface (PHP FIG PSR-11)",
+            "homepage": "https://github.com/php-fig/container",
+            "keywords": [
+                "PSR-11",
+                "container",
+                "container-interface",
+                "container-interop",
+                "psr"
+            ],
+            "time": "2017-02-14T16:28:37+00:00"
+        },
         {
             "name": "psr/http-message",
             "version": "1.0.1",
@@ -2650,6 +2699,7 @@
                 "testing",
                 "xunit"
             ],
+            "abandoned": true,
             "time": "2016-12-02T14:39:14+00:00"
         },
         {

include/api.php

@@ -326,69 +326,7 @@ function api_call(App $a)
 
 				Logger::info(API_LOG_PREFIX . 'username {username}', ['module' => 'api', 'action' => 'call', 'username' => $a->user['username'], 'duration' => round($duration, 2)]);
 
-				if (Config::get("system", "profiler")) {
+				$a->getProfiler()->saveLog($a->getLogger(), API_LOG_PREFIX . 'performance');
-					$duration = microtime(true)-$a->performance["start"];
-
-					/// @TODO round() really everywhere?
-					Logger::debug(
-						API_LOG_PREFIX . 'performance',
-						[
-							'module' => 'api',
-							'action' => 'call',
-							'database_read' => round($a->performance["database"] - $a->performance["database_write"], 3),
-							'database_write' => round($a->performance["database_write"], 3),
-							'cache_read' => round($a->performance["cache"], 3),
-							'cache_write' => round($a->performance["cache_write"], 3),
-							'network_io' => round($a->performance["network"], 2),
-							'file_io' => round($a->performance["file"], 2),
-							'other_io' => round($duration - ($a->performance["database"]
-									+ $a->performance["cache"] + $a->performance["cache_write"]
-									+ $a->performance["network"] + $a->performance["file"]), 2),
-							'total' => round($duration, 2)
-						]
-					);
-
-					if (Config::get("rendertime", "callstack")) {
-						$o = "Database Read:\n";
-						foreach ($a->callstack["database"] as $func => $time) {
-							$time = round($time, 3);
-							if ($time > 0) {
-								$o .= $func . ": " . $time . "\n";
-							}
-						}
-						$o .= "\nDatabase Write:\n";
-						foreach ($a->callstack["database_write"] as $func => $time) {
-							$time = round($time, 3);
-							if ($time > 0) {
-								$o .= $func . ": " . $time . "\n";
-							}
-						}
-
-						$o = "Cache Read:\n";
-						foreach ($a->callstack["cache"] as $func => $time) {
-							$time = round($time, 3);
-							if ($time > 0) {
-								$o .= $func . ": " . $time . "\n";
-							}
-						}
-						$o .= "\nCache Write:\n";
-						foreach ($a->callstack["cache_write"] as $func => $time) {
-							$time = round($time, 3);
-							if ($time > 0) {
-								$o .= $func . ": " . $time . "\n";
-							}
-						}
-
-						$o .= "\nNetwork:\n";
-						foreach ($a->callstack["network"] as $func => $time) {
-							$time = round($time, 3);
-							if ($time > 0) {
-								$o .= $func . ": " . $time . "\n";
-							}
-						}
-						Logger::debug(API_LOG_PREFIX . $o, ['module' => 'api', 'action' => 'call']);
-					}
-				}
 
 				if (false === $return) {
 					/*

index.php

@@ -4,10 +4,7 @@
  * Friendica
  */
 
-use Friendica\App;
-use Friendica\Core\Config;
 use Friendica\Factory;
-use Friendica\Util\BasePath;
 
 if (!file_exists(__DIR__ . '/vendor/autoload.php')) {
 	die('Vendor path not found. Please execute "bin/composer.phar --no-dev install" on the command line in the web root.');
@@ -15,13 +12,6 @@ if (!file_exists(__DIR__ . '/vendor/autoload.php')) {
 
 require __DIR__ . '/vendor/autoload.php';
 
-$basedir = BasePath::create(__DIR__, $_SERVER);
+$a = Factory\DependencyFactory::setUp('index', __DIR__, true);
-$configLoader = new Config\ConfigCacheLoader($basedir);
-$config = Factory\ConfigFactory::createCache($configLoader);
-$logger = Factory\LoggerFactory::create('index', $config);
-
-// We assume that the index.php is called by a frontend process
-// The value is set to "true" by default in App
-$a = new App($config, $logger, false);
 
 $a->runFrontend();

src/App.php

@@ -8,11 +8,12 @@ use Detection\MobileDetect;
 use DOMDocument;
 use DOMXPath;
 use Exception;
-use Friendica\Core\Config\ConfigCache;
+use Friendica\Core\Config\Cache\ConfigCacheLoader;
-use Friendica\Core\Config\ConfigCacheLoader;
+use Friendica\Core\Config\Cache\IConfigCache;
+use Friendica\Core\Config\Configuration;
 use Friendica\Database\DBA;
-use Friendica\Factory\ConfigFactory;
 use Friendica\Network\HTTPException\InternalServerErrorException;
+use Friendica\Util\Profiler;
 use Psr\Log\LoggerInterface;
 
 /**
@@ -53,8 +54,6 @@ class App
 	public $identities;
 	public $is_mobile = false;
 	public $is_tablet = false;
-	public $performance = [];
-	public $callstack = [];
 	public $theme_info = [];
 	public $category;
 	// Allow themes to control internal parameters
@@ -110,23 +109,28 @@ class App
 	public $mobileDetect;
 
 	/**
-	 * @var LoggerInterface The current logger of this App
+	 * @var Configuration The config
-	 */
-	private $logger;
-
-	/**
-	 * @var ConfigCache The cached config
 	 */
 	private $config;
 
+	/**
+	 * @var LoggerInterface The logger
+	 */
+	private $logger;
+
+	/**
+	 * @var Profiler The profiler of this app
+	 */
+	private $profiler;
+
 	/**
 	 * Returns the current config cache of this node
 	 *
-	 * @return ConfigCache
+	 * @return IConfigCache
 	 */
-	public function getConfig()
+	public function getConfigCache()
 	{
-		return $this->config;
+		return $this->config->getCache();
 	}
 
 	/**
@@ -139,6 +143,26 @@ class App
 		return $this->basePath;
 	}
 
+	/**
+	 * The Logger of this app
+	 *
+	 * @return LoggerInterface
+	 */
+	public function getLogger()
+	{
+		return $this->logger;
+	}
+
+	/**
+	 * The profiler of this app
+	 *
+	 * @return Profiler
+	 */
+	public function getProfiler()
+	{
+		return $this->profiler;
+	}
+
 	/**
 	 * Register a stylesheet file path to be included in the <head> tag of every page.
 	 * Inclusion is done in App->initHead().
@@ -181,16 +205,18 @@ class App
 	/**
 	 * @brief App constructor.
 	 *
-	 * @param ConfigCache      $config    The Cached Config
+	 * @param Configuration    $config    The Configuration
-	 * @param LoggerInterface  $logger    Logger of this application
+	 * @param LoggerInterface  $logger    The current app logger
+	 * @param Profiler         $profiler  The profiler of this application
 	 * @param bool             $isBackend Whether it is used for backend or frontend (Default true=backend)
 	 *
 	 * @throws Exception if the Basepath is not usable
 	 */
-	public function __construct(ConfigCache $config, LoggerInterface $logger, $isBackend = true)
+	public function __construct(Configuration $config, LoggerInterface $logger, Profiler $profiler, $isBackend = true)
 	{
-		$this->config   = $config;
 		$this->logger   = $logger;
+		$this->config   = $config;
+		$this->profiler = $profiler;
 		$this->basePath = $this->config->get('system', 'basepath');
 
 		if (!Core\System::isDirectoryUsable($this->basePath, false)) {
@@ -203,26 +229,7 @@ class App
 		$this->checkBackend($isBackend);
 		$this->checkFriendicaApp();
 
-		$this->performance['start'] = microtime(true);
+		$this->profiler->reset();
-		$this->performance['database'] = 0;
-		$this->performance['database_write'] = 0;
-		$this->performance['cache'] = 0;
-		$this->performance['cache_write'] = 0;
-		$this->performance['network'] = 0;
-		$this->performance['file'] = 0;
-		$this->performance['rendering'] = 0;
-		$this->performance['parser'] = 0;
-		$this->performance['marktime'] = 0;
-		$this->performance['markstart'] = microtime(true);
-
-		$this->callstack['database'] = [];
-		$this->callstack['database_write'] = [];
-		$this->callstack['cache'] = [];
-		$this->callstack['cache_write'] = [];
-		$this->callstack['network'] = [];
-		$this->callstack['file'] = [];
-		$this->callstack['rendering'] = [];
-		$this->callstack['parser'] = [];
 
 		$this->mode = new App\Mode($this->basePath);
 
@@ -341,52 +348,20 @@ class App
 		return $this->mode;
 	}
 
-	/**
-	 * Returns the Logger of the Application
-	 *
-	 * @return LoggerInterface The Logger
-	 * @throws InternalServerErrorException when the logger isn't created
-	 */
-	public function getLogger()
-	{
-		if (empty($this->logger)) {
-			throw new InternalServerErrorException('Logger of the Application is not defined');
-		}
-
-		return $this->logger;
-	}
-
 	/**
 	 * Reloads the whole app instance
 	 */
 	public function reload()
 	{
-		Core\Config::init($this->config);
-		Core\PConfig::init($this->config);
-
-		$this->loadDatabase();
-
-		$this->getMode()->determine($this->basePath);
-
 		$this->determineURLPath();
 
-		if ($this->getMode()->has(App\Mode::DBCONFIGAVAILABLE)) {
-			$adapterType = $this->config->get('system', 'config_adapter');
-			$adapter = ConfigFactory::createConfig($adapterType, $this->config);
-			Core\Config::setAdapter($adapter);
-			$adapterP = ConfigFactory::createPConfig($adapterType, $this->config);
-			Core\PConfig::setAdapter($adapterP);
-			Core\Config::load();
-		}
-
-		// again because DB-config could change the config
 		$this->getMode()->determine($this->basePath);
 
 		if ($this->getMode()->has(App\Mode::DBAVAILABLE)) {
 			Core\Hook::loadHooks();
 			$loader = new ConfigCacheLoader($this->basePath);
 			Core\Hook::callAll('load_config', $loader);
-			$this->config->loadConfigArray($loader->loadCoreConfig('addon'), true);
+			$this->config->getCache()->load($loader->loadCoreConfig('addon'), true);
 		}
 
 		$this->loadDefaultTimezone();
@@ -394,8 +369,6 @@ class App
 		Core\L10n::init();
 
 		$this->process_id = Core\System::processID('log');
-
-		Core\Logger::setLogger($this->logger);
 	}
 
 	/**
@@ -456,49 +429,6 @@ class App
 		}
 	}
 
-	public function loadDatabase()
-	{
-		if (DBA::connected()) {
-			return;
-		}
-
-		$db_host = $this->config->get('database', 'hostname');
-		$db_user = $this->config->get('database', 'username');
-		$db_pass = $this->config->get('database', 'password');
-		$db_data = $this->config->get('database', 'database');
-		$charset = $this->config->get('database', 'charset');
-
-		// Use environment variables for mysql if they are set beforehand
-		if (!empty(getenv('MYSQL_HOST'))
-			&& !empty(getenv('MYSQL_USERNAME') || !empty(getenv('MYSQL_USER')))
-			&& getenv('MYSQL_PASSWORD') !== false
-			&& !empty(getenv('MYSQL_DATABASE')))
-		{
-			$db_host = getenv('MYSQL_HOST');
-			if (!empty(getenv('MYSQL_PORT'))) {
-				$db_host .= ':' . getenv('MYSQL_PORT');
-			}
-			if (!empty(getenv('MYSQL_USERNAME'))) {
-				$db_user = getenv('MYSQL_USERNAME');
-			} else {
-				$db_user = getenv('MYSQL_USER');
-			}
-			$db_pass = (string) getenv('MYSQL_PASSWORD');
-			$db_data = getenv('MYSQL_DATABASE');
-		}
-
-		$stamp1 = microtime(true);
-
-		if (DBA::connect($this->config, $db_host, $db_user, $db_pass, $db_data, $charset)) {
-			// Loads DB_UPDATE_VERSION constant
-			Database\DBStructure::definition($this->basePath, false);
-		}
-
-		unset($db_host, $db_user, $db_pass, $db_data, $charset);
-
-		$this->saveTimestamp($stamp1, 'network');
-	}
-
 	public function getScheme()
 	{
 		return $this->scheme;
@@ -740,41 +670,6 @@ class App
 		}
 	}
 
-	/**
-	 * Saves a timestamp for a value - f.e. a call
-	 * Necessary for profiling Friendica
-	 *
-	 * @param int $timestamp the Timestamp
-	 * @param string $value A value to profile
-	 */
-	public function saveTimestamp($timestamp, $value)
-	{
-		$profiler = $this->config->get('system', 'profiler');
-
-		if (!isset($profiler) || !$profiler) {
-			return;
-		}
-
-		$duration = (float) (microtime(true) - $timestamp);
-
-		if (!isset($this->performance[$value])) {
-			// Prevent ugly E_NOTICE
-			$this->performance[$value] = 0;
-		}
-
-		$this->performance[$value] += (float) $duration;
-		$this->performance['marktime'] += (float) $duration;
-
-		$callstack = Core\System::callstack();
-
-		if (!isset($this->callstack[$value][$callstack])) {
-			// Prevent ugly E_NOTICE
-			$this->callstack[$value][$callstack] = 0;
-		}
-
-		$this->callstack[$value][$callstack] += (float) $duration;
-	}
-
 	/**
 	 * Returns the current UserAgent as a String
 	 *
@@ -1225,7 +1120,7 @@ class App
 		if (!$this->isBackend()) {
 			$stamp1 = microtime(true);
 			session_start();
-			$this->saveTimestamp($stamp1, 'parser');
+			$this->profiler->saveTimestamp($stamp1, 'parser', Core\System::callstack());
 			Core\L10n::setSessionVariable();
 			Core\L10n::setLangFromSession();
 		} else {

src/Content/Text/BBCode.php

@@ -1027,7 +1027,7 @@ class BBCode extends BaseObject
 			@curl_exec($ch);
 			$curl_info = @curl_getinfo($ch);
 
-			$a->saveTimestamp($stamp1, "network");
+			$a->getProfiler()->saveTimestamp($stamp1, "network", System::callstack());
 
 			if (substr($curl_info["content_type"], 0, 6) == "image/") {
 				$text = "[url=" . $match[1] . "]" . $match[1] . "[/url]";
@@ -1086,7 +1086,7 @@ class BBCode extends BaseObject
 			@curl_exec($ch);
 			$curl_info = @curl_getinfo($ch);
 
-			$a->saveTimestamp($stamp1, "network");
+			$a->getProfiler()->saveTimestamp($stamp1, "network", System::callstack());
 
 			// if its a link to a picture then embed this picture
 			if (substr($curl_info["content_type"], 0, 6) == "image/") {
@@ -1915,7 +1915,7 @@ class BBCode extends BaseObject
 		// unmask the special chars back to HTML
 		$text = str_replace(['&\_lt\_;', '&\_gt\_;', '&\_amp\_;'], ['<', '>', '&'], $text);
 
-		$a->saveTimestamp($stamp1, "parser");
+		$a->getProfiler()->saveTimestamp($stamp1, "parser", System::callstack());
 
 		// Libertree has a problem with escaped hashtags.
 		$text = str_replace(['\#'], ['#'], $text);

src/Content/Text/Markdown.php

@@ -7,6 +7,7 @@
 namespace Friendica\Content\Text;
 
 use Friendica\BaseObject;
+use Friendica\Core\System;
 use Friendica\Model\Contact;
 use Michelf\MarkdownExtra;
 
@@ -36,7 +37,7 @@ class Markdown extends BaseObject
 		$html = $MarkdownParser->transform($text);
 		$html = preg_replace('/<a(.*?)href="#/is', '<a$1href="' . ltrim($_SERVER['REQUEST_URI'], '/') . '#', $html);
 
-		self::getApp()->saveTimestamp($stamp1, "parser");
+		self::getApp()->getProfiler()->saveTimestamp($stamp1, "parser", System::callstack());
 
 		return $html;
 	}

src/Core/Addon.php

@@ -219,7 +219,7 @@ class Addon extends BaseObject
 
 		$stamp1 = microtime(true);
 		$f = file_get_contents("addon/$addon/$addon.php");
-		$a->saveTimestamp($stamp1, "file");
+		$a->getProfiler()->saveTimestamp($stamp1, "file", System::callstack());
 
 		$r = preg_match("|/\*.*\*/|msU", $f, $m);
 

src/Core/Cache.php

@@ -63,7 +63,7 @@ class Cache extends \Friendica\BaseObject
 
 		$return = self::getDriver()->getAllKeys($prefix);
 
-		self::getApp()->saveTimestamp($time, 'cache');
+		self::getApp()->getProfiler()->saveTimestamp($time, 'cache', System::callstack());
 
 		return $return;
 	}
@@ -82,7 +82,7 @@ class Cache extends \Friendica\BaseObject
 
 		$return = self::getDriver()->get($key);
 
-		self::getApp()->saveTimestamp($time, 'cache');
+		self::getApp()->getProfiler()->saveTimestamp($time, 'cache', System::callstack());
 
 		return $return;
 	}
@@ -105,7 +105,7 @@ class Cache extends \Friendica\BaseObject
 
 		$return = self::getDriver()->set($key, $value, $duration);
 
-		self::getApp()->saveTimestamp($time, 'cache_write');
+		self::getApp()->getProfiler()->saveTimestamp($time, 'cache_write', System::callstack());
 
 		return $return;
 	}
@@ -124,7 +124,7 @@ class Cache extends \Friendica\BaseObject
 
 		$return = self::getDriver()->delete($key);
 
-		self::getApp()->saveTimestamp($time, 'cache_write');
+		self::getApp()->getProfiler()->saveTimestamp($time, 'cache_write', System::callstack());
 
 		return $return;
 	}

src/Core/Config.php

@@ -8,10 +8,6 @@
  */
 namespace Friendica\Core;
 
-use Friendica\Core\Config\ConfigCache;
-use Friendica\Core\Config\IConfigAdapter;
-use Friendica\Core\Config\IConfigCache;
-
 /**
  * @brief Arbitrary system configuration storage
  *
@@ -22,116 +18,76 @@ use Friendica\Core\Config\IConfigCache;
 class Config
 {
 	/**
-	 * @var Config\IConfigAdapter|null
+	 * @var Config\Configuration
 	 */
-	private static $adapter;
+	private static $config;
 
 	/**
-	 * @var Config\IConfigCache
+	 * Initialize the config
-	 */
-	private static $cache;
-
-	/**
-	 * Initialize the config with only the cache
 	 *
-	 * @param Config\IConfigCache $cache  The configuration cache
+	 * @param Config\Configuration $config
 	 */
-	public static function init(Config\IConfigCache $cache)
+	public static function init(Config\Configuration $config)
 	{
-		self::$cache  = $cache;
+		self::$config = $config;
-	}
-
-	/**
-	 * Add the adapter for DB-backend
-	 *
-	 * @param Config\IConfigAdapter $adapter
-	 */
-	public static function setAdapter(Config\IConfigAdapter $adapter)
-	{
-		self::$adapter = $adapter;
 	}
 
 	/**
 	 * @brief Loads all configuration values of family into a cached storage.
 	 *
-	 * All configuration values of the system are stored in the cache ( @see IConfigCache )
+	 * @param string $cat The category of the configuration value
-	 *
-	 * @param string $family The category of the configuration value
 	 *
 	 * @return void
 	 */
-	public static function load($family = "config")
+	public static function load($cat = "config")
 	{
-		if (!isset(self::$adapter) || !self::$adapter->isConnected()) {
+		self::$config->load($cat);
-			return;
-		}
-
-		self::$adapter->load($family);
 	}
 
 	/**
 	 * @brief Get a particular user's config variable given the category name
 	 * ($family) and a key.
 	 *
-	 * Get a particular config value from the given category ($family)
+	 * @param string  $cat        The category of the configuration value
-	 * and the $key from a cached storage either from the self::$adapter
-	 * (@see IConfigAdapter ) or from the static::$cache (@see IConfigCache ).
-	 *
-	 * @param string  $family        The category of the configuration value
 	 * @param string  $key           The configuration key to query
 	 * @param mixed   $default_value optional, The value to return if key is not set (default: null)
 	 * @param boolean $refresh       optional, If true the config is loaded from the db and not from the cache (default: false)
 	 *
 	 * @return mixed Stored value or null if it does not exist
 	 */
-	public static function get($family, $key, $default_value = null, $refresh = false)
+	public static function get($cat, $key, $default_value = null, $refresh = false)
 	{
-		if (!isset(self::$adapter) || !self::$adapter->isConnected()) {
+		return self::$config->get($cat, $key, $default_value, $refresh);
-			return self::$cache->get($family, $key, $default_value);
-		}
-
-		return self::$adapter->get($family, $key, $default_value, $refresh);
 	}
 
 	/**
 	 * @brief Sets a configuration value for system config
 	 *
-	 * Stores a config value ($value) in the category ($family) under the key ($key)
+	 * Stores a config value ($value) in the category ($cat) under the key ($key)
 	 *
 	 * Note: Please do not store booleans - convert to 0/1 integer values!
 	 *
-	 * @param string $family The category of the configuration value
+	 * @param string $cat The category of the configuration value
 	 * @param string $key    The configuration key to set
 	 * @param mixed  $value  The value to store
 	 *
 	 * @return bool Operation success
 	 */
-	public static function set($family, $key, $value)
+	public static function set($cat, $key, $value)
 	{
-		if (!isset(self::$adapter) || !self::$adapter->isConnected()) {
+		return self::$config->set($cat, $key, $value);
-			return self::$cache->set($family, $key, $value);
-		}
-
-		return self::$adapter->set($family, $key, $value);
 	}
 
 	/**
 	 * @brief Deletes the given key from the system configuration.
 	 *
-	 * Removes the configured value from the stored cache in self::$config
+	 * @param string $cat The category of the configuration value
-	 * (@see ConfigCache ) and removes it from the database (@see IConfigAdapter ).
-	 *
-	 * @param string $family The category of the configuration value
 	 * @param string $key    The configuration key to delete
 	 *
-	 * @return mixed
+	 * @return bool
 	 */
-	public static function delete($family, $key)
+	public static function delete($cat, $key)
 	{
-		if (!isset(self::$adapter) || !self::$adapter->isConnected()) {
+		return self::$config->delete($cat, $key);
-			self::$cache->delete($family, $key);
-		}
-
-		return self::$adapter->delete($family, $key);
 	}
 }

src/Core/Config/Adapter/AbstractDbaConfigAdapter.php

@@ -1,12 +1,19 @@
 <?php
 
-namespace Friendica\Core\Config;
+namespace Friendica\Core\Config\Adapter;
+
+use Friendica\Database\DBA;
 
 abstract class AbstractDbaConfigAdapter
 {
 	/** @var bool */
 	protected $connected = true;
 
+	public function __construct()
+	{
+		$this->connected = DBA::connected();
+	}
+
 	public function isConnected()
 	{
 		return $this->connected;

src/Core/Config/Adapter/IConfigAdapter.php

@@ -1,6 +1,6 @@
 <?php
 
-namespace Friendica\Core\Config;
+namespace Friendica\Core\Config\Adapter;
 
 /**
  *
@@ -9,51 +9,48 @@ namespace Friendica\Core\Config;
 interface IConfigAdapter
 {
 	/**
-	 * Loads all configuration values into a cached storage.
+	 * Loads all configuration values and returns the loaded category as an array.
 	 *
 	 * @param string  $cat The category of the configuration values to load
 	 *
-	 * @return void
+	 * @return array
 	 */
 	public function load($cat = "config");
 
 	/**
-	 * Get a particular user's config variable given the category name
+	 * Get a particular system-wide config variable given the category name
 	 * ($family) and a key.
 	 *
-	 * @param string  $cat           The category of the configuration value
+	 * @param string  $cat The category of the configuration value
-	 * @param string  $k             The configuration key to query
+	 * @param string  $key The configuration key to query
-	 * @param mixed   $default_value optional, The value to return if key is not set (default: null)
-	 * @param boolean $refresh       optional, If true the config is loaded from the db and not from the cache (default: false)
 	 *
-	 * @return mixed Stored value or null if it does not exist
+	 * @return mixed Stored value or "!<unset>!" if it does not exist
 	 */
-	public function get($cat, $k, $default_value = null, $refresh = false);
+	public function get($cat, $key);
 
 	/**
-	 * Stores a config value ($value) in the category ($family) under the key ($key)
+	 * Stores a config value ($value) in the category ($family) under the key ($key).
-	 * for the user_id $uid.
 	 *
 	 * Note: Please do not store booleans - convert to 0/1 integer values!
 	 *
 	 * @param string $cat   The category of the configuration value
-	 * @param string $k     The configuration key to set
+	 * @param string $key   The configuration key to set
 	 * @param mixed  $value The value to store
 	 *
 	 * @return bool Operation success
 	 */
-	public function set($cat, $k, $value);
+	public function set($cat, $key, $value);
 
 	/**
 	 * Removes the configured value from the stored cache
 	 * and removes it from the database.
 	 *
 	 * @param string $cat The category of the configuration value
-	 * @param string $k   The configuration key to delete
+	 * @param string $key   The configuration key to delete
 	 *
 	 * @return mixed
 	 */
-	public function delete($cat, $k);
+	public function delete($cat, $key);
 
 	/**
 	 * Checks, if the current adapter is connected to the backend
@@ -61,4 +58,14 @@ interface IConfigAdapter
 	 * @return bool
 	 */
 	public function isConnected();
+
+	/**
+	 * Checks, if a config key ($key) in the category ($cat) is already loaded.
+	 *
+	 * @param string $cat The configuration category
+	 * @param string $key The configuration key
+	 *
+	 * @return bool
+	 */
+	public function isLoaded($cat, $key);
 }

src/Core/Config/Adapter/IPConfigAdapter.php

@@ -6,7 +6,7 @@
  * and open the template in the editor.
  */
 
-namespace Friendica\Core\Config;
+namespace Friendica\Core\Config\Adapter;
 
 /**
  *
@@ -15,12 +15,12 @@ namespace Friendica\Core\Config;
 interface IPConfigAdapter
 {
 	/**
-	 * Loads all configuration values of a user's config family into a cached storage.
+	 * Loads all configuration values of a user's config family and returns the loaded category as an array.
 	 *
 	 * @param string $uid The user_id
 	 * @param string $cat The category of the configuration value
 	 *
-	 * @return void
+	 * @return array
 	 */
 	public function load($uid, $cat);
 
@@ -30,13 +30,11 @@ interface IPConfigAdapter
 	 *
 	 * @param string  $uid           The user_id
 	 * @param string  $cat           The category of the configuration value
-	 * @param string  $k             The configuration key to query
+	 * @param string  $key           The configuration key to query
-	 * @param mixed   $default_value optional, The value to return if key is not set (default: null)
-	 * @param boolean $refresh       optional, If true the config is loaded from the db and not from the cache (default: false)
 	 *
-	 * @return mixed Stored value or null if it does not exist
+	 * @return mixed Stored value or "!<unset>!" if it does not exist
 	 */
-	public function get($uid, $cat, $k, $default_value = null, $refresh = false);
+	public function get($uid, $cat, $key);
 
 	/**
 	 * Stores a config value ($value) in the category ($family) under the key ($key)
@@ -46,12 +44,12 @@ interface IPConfigAdapter
 	 *
 	 * @param string $uid   The user_id
 	 * @param string $cat   The category of the configuration value
-	 * @param string $k     The configuration key to set
+	 * @param string $key   The configuration key to set
 	 * @param string $value The value to store
 	 *
 	 * @return bool Operation success
 	 */
-	public function set($uid, $cat, $k, $value);
+	public function set($uid, $cat, $key, $value);
 
 	/**
 	 * Removes the configured value from the stored cache
@@ -59,9 +57,27 @@ interface IPConfigAdapter
 	 *
 	 * @param string $uid The user_id
 	 * @param string $cat The category of the configuration value
-	 * @param string $k   The configuration key to delete
+	 * @param string $key The configuration key to delete
 	 *
-	 * @return mixed
+	 * @return bool
 	 */
-	public function delete($uid, $cat, $k);
+	public function delete($uid, $cat, $key);
+
+	/**
+	 * Checks, if the current adapter is connected to the backend
+	 *
+	 * @return bool
+	 */
+	public function isConnected();
+
+	/**
+	 * Checks, if a config key ($key) in the category ($cat) is already loaded for the user_id $uid.
+	 *
+	 * @param string $uid The user_id
+	 * @param string $cat The configuration category
+	 * @param string $key The configuration key
+	 *
+	 * @return bool
+	 */
+	public function isLoaded($uid, $cat, $key);
 }

src/Core/Config/Adapter/JITConfigAdapter.php

@@ -0,0 +1,135 @@
+<?php
+namespace Friendica\Core\Config\Adapter;
+
+use Friendica\Database\DBA;
+
+/**
+ * JustInTime Configuration Adapter
+ *
+ * Default Config Adapter. Provides the best performance for pages loading few configuration variables.
+ *
+ * @author Hypolite Petovan <hypolite@mrpetovan.com>
+ */
+class JITConfigAdapter extends AbstractDbaConfigAdapter implements IConfigAdapter
+{
+	private $in_db;
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function load($cat = "config")
+	{
+		$return = [];
+
+		if (!$this->isConnected()) {
+			return $return;
+		}
+
+		// We don't preload "system" anymore.
+		// This reduces the number of database reads a lot.
+		if ($cat === 'system') {
+			return $return;
+		}
+
+		$configs = DBA::select('config', ['v', 'k'], ['cat' => $cat]);
+		while ($config = DBA::fetch($configs)) {
+			$key = $config['k'];
+
+			$return[$key] = $config['v'];
+			$this->in_db[$cat][$key] = true;
+		}
+		DBA::close($configs);
+
+		return [$cat => $config];
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function get($cat, $key)
+	{
+		if (!$this->isConnected()) {
+			return '!<unset>!';
+		}
+
+		$config = DBA::selectFirst('config', ['v'], ['cat' => $cat, 'k' => $key]);
+		if (DBA::isResult($config)) {
+			// manage array value
+			$value = (preg_match("|^a:[0-9]+:{.*}$|s", $config['v']) ? unserialize($config['v']) : $config['v']);
+
+			$this->in_db[$cat][$key] = true;
+			return $value;
+		} else {
+
+			$this->in_db[$cat][$key] = false;
+			return '!<unset>!';
+		}
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function set($cat, $key, $value)
+	{
+		if (!$this->isConnected()) {
+			return false;
+		}
+
+		// We store our setting values in a string variable.
+		// So we have to do the conversion here so that the compare below works.
+		// The exception are array values.
+		$dbvalue = (!is_array($value) ? (string)$value : $value);
+
+		$stored = $this->get($cat, $key);
+
+		if (!isset($this->in_db[$cat])) {
+			$this->in_db[$cat] = [];
+		}
+		if (!isset($this->in_db[$cat][$key])) {
+			$this->in_db[$cat][$key] = false;
+		}
+
+		if (($stored === $dbvalue) && $this->in_db[$cat][$key]) {
+			return true;
+		}
+
+		// manage array value
+		$dbvalue = (is_array($value) ? serialize($value) : $dbvalue);
+
+		$result = DBA::update('config', ['v' => $dbvalue], ['cat' => $cat, 'k' => $key], true);
+
+		$this->in_db[$cat][$key] = $result;
+
+		return $result;
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function delete($cat, $key)
+	{
+		if (!$this->isConnected()) {
+			return false;
+		}
+
+		if (isset($this->cache[$cat][$key])) {
+			unset($this->in_db[$cat][$key]);
+		}
+
+		$result = DBA::delete('config', ['cat' => $cat, 'k' => $key]);
+
+		return $result;
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function isLoaded($cat, $key)
+	{
+		if (!$this->isConnected()) {
+			return false;
+		}
+
+		return (isset($this->in_db[$cat][$key])) && $this->in_db[$cat][$key];
+	}
+}

src/Core/Config/Adapter/JITPConfigAdapter.php

@@ -0,0 +1,138 @@
+<?php
+namespace Friendica\Core\Config\Adapter;
+
+use Friendica\Database\DBA;
+
+/**
+ * JustInTime User Configuration Adapter
+ *
+ * Default PConfig Adapter. Provides the best performance for pages loading few configuration variables.
+ *
+ * @author Hypolite Petovan <hypolite@mrpetovan.com>
+ */
+class JITPConfigAdapter extends AbstractDbaConfigAdapter implements IPConfigAdapter
+{
+	private $in_db;
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function load($uid, $cat)
+	{
+		$return = [];
+
+		if (!$this->isConnected()) {
+			return $return;
+		}
+
+		$pconfigs = DBA::select('pconfig', ['v', 'k'], ['cat' => $cat, 'uid' => $uid]);
+		if (DBA::isResult($pconfigs)) {
+			while ($pconfig = DBA::fetch($pconfigs)) {
+				$key = $pconfig['k'];
+
+				$return[$key] = $pconfig['v'];
+
+				$this->in_db[$uid][$cat][$key] = true;
+			}
+		} else if ($cat != 'config') {
+			// Negative caching
+			$return = "!<unset>!";
+		}
+		DBA::close($pconfigs);
+
+		return [$cat => $return];
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function get($uid, $cat, $key)
+	{
+		if (!$this->isConnected()) {
+			return '!<unset>!';
+		}
+
+		$pconfig = DBA::selectFirst('pconfig', ['v'], ['uid' => $uid, 'cat' => $cat, 'k' => $key]);
+		if (DBA::isResult($pconfig)) {
+			// manage array value
+			$value = (preg_match("|^a:[0-9]+:{.*}$|s", $pconfig['v']) ? unserialize($pconfig['v']) : $pconfig['v']);
+
+			$this->in_db[$uid][$cat][$key] = true;
+			return $value;
+		} else {
+
+			$this->in_db[$uid][$cat][$key] = false;
+			return '!<unset>!';
+		}
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function set($uid, $cat, $key, $value)
+	{
+		if (!$this->isConnected()) {
+			return false;
+		}
+
+		// We store our setting values in a string variable.
+		// So we have to do the conversion here so that the compare below works.
+		// The exception are array values.
+		$dbvalue = (!is_array($value) ? (string)$value : $value);
+
+		$stored = $this->get($uid, $cat, $key);
+
+		if (!isset($this->in_db[$uid])) {
+			$this->in_db[$uid] = [];
+		}
+		if (!isset($this->in_db[$uid][$cat])) {
+			$this->in_db[$uid][$cat] = [];
+		}
+		if (!isset($this->in_db[$uid][$cat][$key])) {
+			$this->in_db[$uid][$cat][$key] = false;
+		}
+
+		if (($stored === $dbvalue) && $this->in_db[$uid][$cat][$key]) {
+			return true;
+		}
+
+		// manage array value
+		$dbvalue = (is_array($value) ? serialize($value) : $dbvalue);
+
+		$result = DBA::update('pconfig', ['v' => $dbvalue], ['uid' => $uid, 'cat' => $cat, 'k' => $key], true);
+
+		$this->in_db[$uid][$cat][$key] = $result;
+
+		return $result;
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function delete($uid, $cat, $key)
+	{
+		if (!$this->isConnected()) {
+			return false;
+		}
+
+		if (!empty($this->in_db[$uid][$cat][$key])) {
+			unset($this->in_db[$uid][$cat][$key]);
+		}
+
+		$result = DBA::delete('pconfig', ['uid' => $uid, 'cat' => $cat, 'k' => $key]);
+
+		return $result;
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function isLoaded($uid, $cat, $key)
+	{
+		if (!$this->isConnected()) {
+			return false;
+		}
+
+		return (isset($this->in_db[$uid][$cat][$key])) && $this->in_db[$uid][$cat][$key];
+	}
+}

src/Core/Config/Adapter/PreloadConfigAdapter.php

@@ -1,8 +1,7 @@
 <?php
 
-namespace Friendica\Core\Config;
+namespace Friendica\Core\Config\Adapter;
 
-use Exception;
 use Friendica\Database\DBA;
 
 /**
@@ -16,60 +15,28 @@ class PreloadConfigAdapter extends AbstractDbaConfigAdapter implements IConfigAd
 {
 	private $config_loaded = false;
 
-	/**
-	 * @var IConfigCache The config cache of this driver
-	 */
-	private $configCache;
-
-	/**
-	 * @param IConfigCache $configCache The config cache of this driver
-	 */
-	public function __construct(IConfigCache $configCache)
-	{
-		$this->configCache = $configCache;
-		$this->connected = DBA::connected();
-		$this->load();
-	}
-
 	/**
 	 * {@inheritdoc}
 	 */
-	public function load($family = 'config')
+	public function load($cat = 'config')
 	{
+		$return = [];
+
 		if (!$this->isConnected()) {
-			return;
+			return $return;
 		}
 
 		if ($this->config_loaded) {
-			return;
+			return $return;
 		}
 
 		$configs = DBA::select('config', ['cat', 'v', 'k']);
 		while ($config = DBA::fetch($configs)) {
-			$this->configCache->set($config['cat'], $config['k'], $config['v']);
+			$return[$config['cat']][$config['k']] = $config['v'];
 		}
 		DBA::close($configs);
 
 		$this->config_loaded = true;
-	}
-
-	/**
-	 * {@inheritdoc}
-	 */
-	public function get($cat, $k, $default_value = null, $refresh = false)
-	{
-		if (!$this->isConnected()) {
-			return $default_value;
-		}
-
-		if ($refresh) {
-			$config = DBA::selectFirst('config', ['v'], ['cat' => $cat, 'k' => $k]);
-			if (DBA::isResult($config)) {
-				$this->configCache->set($cat, $k, $config['v']);
-			}
-		}
-
-		$return = $this->configCache->get($cat, $k, $default_value);
 
 		return $return;
 	}
@@ -77,7 +44,28 @@ class PreloadConfigAdapter extends AbstractDbaConfigAdapter implements IConfigAd
 	/**
 	 * {@inheritdoc}
 	 */
-	public function set($cat, $k, $value)
+	public function get($cat, $key)
+	{
+		if (!$this->isConnected()) {
+			return '!<unset>!';
+		}
+
+		$config = DBA::selectFirst('config', ['v'], ['cat' => $cat, 'k' => $key]);
+		if (DBA::isResult($config)) {
+			// manage array value
+			$value = (preg_match("|^a:[0-9]+:{.*}$|s", $config['v']) ? unserialize($config['v']) : $config['v']);
+
+			return $value;
+		} else {
+
+			return '!<unset>!';
+		}
+	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function set($cat, $key, $value)
 	{
 		if (!$this->isConnected()) {
 			return false;
@@ -88,36 +76,41 @@ class PreloadConfigAdapter extends AbstractDbaConfigAdapter implements IConfigAd
 		// The exception are array values.
 		$compare_value = !is_array($value) ? (string)$value : $value;
 
-		if ($this->configCache->get($cat, $k) === $compare_value) {
+		if ($this->get($cat, $key) === $compare_value) {
 			return true;
 		}
 
-		$this->configCache->set($cat, $k, $value);
-
 		// manage array value
 		$dbvalue = is_array($value) ? serialize($value) : $value;
 
-		$result = DBA::update('config', ['v' => $dbvalue], ['cat' => $cat, 'k' => $k], true);
+		$result = DBA::update('config', ['v' => $dbvalue], ['cat' => $cat, 'k' => $key], true);
-		if (!$result) {
-			throw new Exception('Unable to store config value in [' . $cat . '][' . $k . ']');
-		}
 
-		return true;
+		return $result;
 	}
 
 	/**
 	 * {@inheritdoc}
 	 */
-	public function delete($cat, $k)
+	public function delete($cat, $key)
 	{
 		if (!$this->isConnected()) {
 			return false;
 		}
 
-		$this->configCache->delete($cat, $k);
+		$result = DBA::delete('config', ['cat' => $cat, 'k' => $key]);
-
-		$result = DBA::delete('config', ['cat' => $cat, 'k' => $k]);
 
 		return $result;
 	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function isLoaded($cat, $key)
+	{
+		if (!$this->isConnected()) {
+			return false;
+		}
+
+		return $this->config_loaded;
+	}
 }

src/Core/Config/Adapter/PreloadPConfigAdapter.php

@@ -1,8 +1,7 @@
 <?php
 
-namespace Friendica\Core\Config;
+namespace Friendica\Core\Config\Adapter;
 
-use Exception;
 use Friendica\Database\DBA;
 
 /**
@@ -12,23 +11,17 @@ use Friendica\Database\DBA;
  *
  * @author Hypolite Petovan <hypolite@mrpetovan.com>
  */
-class PreloadPConfigAdapter implements IPConfigAdapter
+class PreloadPConfigAdapter extends AbstractDbaConfigAdapter implements IPConfigAdapter
 {
 	private $config_loaded = false;
 
 	/**
-	 * The config cache of this adapter
+	 * @param int $uid The UID of the current user
-	 * @var IPConfigCache
 	 */
-	private $configCache;
+	public function __construct($uid = null)
-
-	/**
-	 * @param IPConfigCache $configCache The config cache of this adapter
-	 * @param int           $uid    The UID of the current user
-	 */
-	public function __construct(IPConfigCache $configCache, $uid = null)
 	{
-		$this->configCache = $configCache;
+		parent::__construct();
+
 		if (isset($uid)) {
 			$this->load($uid, 'config');
 		}
@@ -37,51 +30,62 @@ class PreloadPConfigAdapter implements IPConfigAdapter
 	/**
 	 * {@inheritdoc}
 	 */
-	public function load($uid, $family)
+	public function load($uid, $cat)
 	{
+		$return = [];
+
 		if ($this->config_loaded) {
-			return;
+			return $return;
 		}
 
 		if (empty($uid)) {
-			return;
+			return $return;
 		}
 
 		$pconfigs = DBA::select('pconfig', ['cat', 'v', 'k'], ['uid' => $uid]);
 		while ($pconfig = DBA::fetch($pconfigs)) {
-			$this->configCache->setP($uid, $pconfig['cat'], $pconfig['k'], $pconfig['v']);
+			$return[$pconfig['cat']][$pconfig['k']] = $pconfig['v'];
 		}
 		DBA::close($pconfigs);
 
 		$this->config_loaded = true;
+
+		return $return;
 	}
 
 	/**
 	 * {@inheritdoc}
 	 */
-	public function get($uid, $cat, $k, $default_value = null, $refresh = false)
+	public function get($uid, $cat, $key)
 	{
+		if (!$this->isConnected()) {
+			return '!<unset>!';
+		}
+
 		if (!$this->config_loaded) {
 			$this->load($uid, $cat);
 		}
 
-		if ($refresh) {
+		$config = DBA::selectFirst('pconfig', ['v'], ['uid' => $uid, 'cat' => $cat, 'k' => $key]);
-			$config = DBA::selectFirst('pconfig', ['v'], ['uid' => $uid, 'cat' => $cat, 'k' => $k]);
+		if (DBA::isResult($config)) {
-			if (DBA::isResult($config)) {
+			// manage array value
-				$this->configCache->setP($uid, $cat, $k, $config['v']);
+			$value = (preg_match("|^a:[0-9]+:{.*}$|s", $config['v']) ? unserialize($config['v']) : $config['v']);
-			} else {
-				$this->configCache->deleteP($uid, $cat, $k);
-			}
-		}
 
-		return $this->configCache->getP($uid, $cat, $k, $default_value);;
+			return $value;
+		} else {
+			return '!<unset>!';
+		}
 	}
 
 	/**
 	 * {@inheritdoc}
 	 */
-	public function set($uid, $cat, $k, $value)
+	public function set($uid, $cat, $key, $value)
 	{
+		if (!$this->isConnected()) {
+			return false;
+		}
+
 		if (!$this->config_loaded) {
 			$this->load($uid, $cat);
 		}
@@ -90,36 +94,45 @@ class PreloadPConfigAdapter implements IPConfigAdapter
 		// The exception are array values.
 		$compare_value = !is_array($value) ? (string)$value : $value;
 
-		if ($this->configCache->getP($uid, $cat, $k) === $compare_value) {
+		if ($this->get($uid, $cat, $key) === $compare_value) {
 			return true;
 		}
 
-		$this->configCache->setP($uid, $cat, $k, $value);
-
 		// manage array value
 		$dbvalue = is_array($value) ? serialize($value) : $value;
 
-		$result = DBA::update('pconfig', ['v' => $dbvalue], ['uid' => $uid, 'cat' => $cat, 'k' => $k], true);
+		$result = DBA::update('pconfig', ['v' => $dbvalue], ['uid' => $uid, 'cat' => $cat, 'k' => $key], true);
-		if (!$result) {
-			throw new Exception('Unable to store config value in [' . $uid . '][' . $cat . '][' . $k . ']');
-		}
 
-		return true;
+		return $result;
 	}
 
 	/**
 	 * {@inheritdoc}
 	 */
-	public function delete($uid, $cat, $k)
+	public function delete($uid, $cat, $key)
 	{
+		if (!$this->isConnected()) {
+			return false;
+		}
+
 		if (!$this->config_loaded) {
 			$this->load($uid, $cat);
 		}
 
-		$this->configCache->deleteP($uid, $cat, $k);
+		$result = DBA::delete('pconfig', ['uid' => $uid, 'cat' => $cat, 'k' => $key]);
-
-		$result = DBA::delete('pconfig', ['uid' => $uid, 'cat' => $cat, 'k' => $k]);
 
 		return $result;
 	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function isLoaded($uid, $cat, $key)
+	{
+		if (!$this->isConnected()) {
+			return false;
+		}
+
+		return $this->config_loaded;
+	}
 }

src/Core/Config/Cache/ConfigCache.php

@@ -1,6 +1,6 @@
 <?php
 
-namespace Friendica\Core\Config;
+namespace Friendica\Core\Config\Cache;
 
 /**
  * The Friendica config cache for the application
@@ -11,6 +11,9 @@ namespace Friendica\Core\Config;
  */
 class ConfigCache implements IConfigCache, IPConfigCache
 {
+	/**
+	 * @var array
+	 */
 	private $config;
 
 	/**
@@ -18,24 +21,28 @@ class ConfigCache implements IConfigCache, IPConfigCache
 	 */
 	public function __construct(array $config = [])
 	{
-		$this->loadConfigArray($config);
+		$this->load($config);
 	}
 
 	/**
-	 * Tries to load the specified configuration array into the App->config array.
+	 * {@inheritdoc}
-	 * Doesn't overwrite previously set values by default to prevent default config files to supersede DB Config.
-	 *
-	 * @param array $config
-	 * @param bool  $overwrite Force value overwrite if the config key already exists
 	 */
-	public function loadConfigArray(array $config, $overwrite = false)
+	public function load(array $config, $overwrite = false)
 	{
-		foreach ($config as $category => $values) {
+		$categories = array_keys($config);
-			foreach ($values as $key => $value) {
+
-				if ($overwrite) {
+		foreach ($categories as $category) {
-					$this->set($category, $key, $value);
+			if (isset($config[$category]) && is_array($config[$category])) {
-				} else {
+				$keys = array_keys($config[$category]);
-					$this->setDefault($category, $key, $value);
+
+				foreach ($keys as $key) {
+					if (isset($config[$category][$key])) {
+						if ($overwrite) {
+							$this->set($category, $key, $config[$category][$key]);
+						} else {
+							$this->setDefault($category, $key, $config[$category][$key]);
+						}
+					}
 				}
 			}
 		}
@@ -44,23 +51,24 @@ class ConfigCache implements IConfigCache, IPConfigCache
 	/**
 	 * {@inheritdoc}
 	 */
-	public function get($cat, $key = null, $default = null)
+	public function get($cat, $key = null)
 	{
-		$return = $default;
+		if (isset($this->config[$cat][$key])) {
-
+			return $this->config[$cat][$key];
-		if ($cat === 'config') {
+		} elseif ($key == null && isset($this->config[$cat])) {
-			if (isset($this->config[$key])) {
+			return $this->config[$cat];
-				$return = $this->config[$key];
-			}
 		} else {
-			if (isset($this->config[$cat][$key])) {
+			return '!<unset>!';
-				$return = $this->config[$cat][$key];
-			} elseif ($key == null && isset($this->config[$cat])) {
-				$return = $this->config[$cat];
-			}
 		}
+	}
 
-		return $return;
+	/**
+	 * {@inheritdoc}
+	 */
+	public function has($cat, $key = null)
+	{
+		return (isset($this->config[$cat][$key]) && $this->config[$cat][$key] !== '!<unset>!') ||
+		($key == null && isset($this->config[$cat]) && $this->config[$cat] !== '!<unset>!' && is_array($this->config[$cat]));
 	}
 
 	/**
@@ -85,34 +93,48 @@ class ConfigCache implements IConfigCache, IPConfigCache
 		// Only arrays are serialized in database, so we have to unserialize sparingly
 		$value = is_string($value) && preg_match("|^a:[0-9]+:{.*}$|s", $value) ? unserialize($value) : $value;
 
-		if ($cat === 'config') {
+		if (!isset($this->config[$cat])) {
-			$this->config[$key] = $value;
+			$this->config[$cat] = [];
-		} else {
-			if (!isset($this->config[$cat])) {
-				$this->config[$cat] = [];
-			}
-
-			$this->config[$cat][$key] = $value;
 		}
 
+		$this->config[$cat][$key] = $value;
+
 		return true;
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
+	public function hasP($uid, $cat, $key = null)
+	{
+		return (isset($this->config[$uid][$cat][$key]) && $this->config[$uid][$cat][$key] !== '!<unset>!') ||
+			($key == null && isset($this->config[$uid][$cat]) && $this->config[$uid][$cat] !== '!<unset>!' && is_array($this->config[$uid][$cat]));
+	}
+
 	/**
 	 * {@inheritdoc}
 	 */
 	public function delete($cat, $key)
 	{
-		if ($cat === 'config') {
+		if (isset($this->config[$cat][$key])) {
-			if (isset($this->config[$key])) {
+			unset($this->config[$cat][$key]);
-				unset($this->config[$key]);
+			if (count($this->config[$cat]) == 0) {
+				unset($this->config[$cat]);
 			}
+			return true;
 		} else {
-			if (isset($this->config[$cat][$key])) {
+			return false;
-				unset($this->config[$cat][$key]);
+		}
-				if (count($this->config[$cat]) == 0) {
+	}
-					unset($this->config[$cat]);
+
-				}
+	/**
+	 * {@inheritdoc}
+	 */
+	public function loadP($uid, array $config)
+	{
+		foreach ($config as $category => $values) {
+			foreach ($values as $key => $value) {
+				$this->setP($uid, $category, $key, $value);
 			}
 		}
 	}
@@ -120,17 +142,15 @@ class ConfigCache implements IConfigCache, IPConfigCache
 	/**
 	 * {@inheritdoc}
 	 */
-	public function getP($uid, $cat, $key = null, $default = null)
+	public function getP($uid, $cat, $key = null)
 	{
-		$return = $default;
-
 		if (isset($this->config[$uid][$cat][$key])) {
-			$return = $this->config[$uid][$cat][$key];
+			return $this->config[$uid][$cat][$key];
-		} elseif ($key === null && isset($this->config[$uid][$cat])) {
+		} elseif ($key == null && isset($this->config[$uid][$cat])) {
-			$return = $this->config[$uid][$cat];
+			return $this->config[$uid][$cat];
+		} else {
+			return '!<unset>!';
 		}
-
-		return $return;
 	}
 
 	/**
@@ -145,15 +165,13 @@ class ConfigCache implements IConfigCache, IPConfigCache
 			$this->config[$uid] = [];
 		}
 
-		if (!isset($this->config[$uid][$cat]) || !is_array($this->config[$uid][$cat])) {
+		if (!isset($this->config[$uid][$cat])) {
 			$this->config[$uid][$cat] = [];
 		}
 
-		if ($key === null) {
+		$this->config[$uid][$cat][$key] = $value;
-			$this->config[$uid][$cat] = $value;
+
-		} else {
+		return true;
-			$this->config[$uid][$cat][$key] = $value;
-		}
 	}
 
 	/**
@@ -169,6 +187,10 @@ class ConfigCache implements IConfigCache, IPConfigCache
 					unset($this->config[$uid]);
 				}
 			}
+
+			return true;
+		} else {
+			return false;
 		}
 	}
 

src/Core/Config/Cache/ConfigCacheLoader.php

@@ -1,6 +1,6 @@
 <?php
 
-namespace Friendica\Core\Config;
+namespace Friendica\Core\Config\Cache;
 
 use Friendica\Core\Addon;
 
@@ -40,13 +40,13 @@ class ConfigCacheLoader
 		// Setting at least the basepath we know
 		$config->set('system', 'basepath', $this->baseDir);
 
-		$config->loadConfigArray($this->loadCoreConfig('defaults'));
+		$config->load($this->loadCoreConfig('defaults'));
-		$config->loadConfigArray($this->loadCoreConfig('settings'));
+		$config->load($this->loadCoreConfig('settings'));
 
-		$config->loadConfigArray($this->loadLegacyConfig('htpreconfig'), true);
+		$config->load($this->loadLegacyConfig('htpreconfig'), true);
-		$config->loadConfigArray($this->loadLegacyConfig('htconfig'), true);
+		$config->load($this->loadLegacyConfig('htconfig'), true);
 
-		$config->loadConfigArray($this->loadCoreConfig('local'), true);
+		$config->load($this->loadCoreConfig('local'), true);
 	}
 
 	/**

src/Core/Config/Cache/IConfigCache.php

@@ -0,0 +1,65 @@
+<?php
+
+namespace Friendica\Core\Config\Cache;
+
+/**
+ * The interface for a system-wide ConfigCache
+ */
+interface IConfigCache
+{
+	/**
+	 * Tries to load the specified configuration array into the config array.
+	 * Doesn't overwrite previously set values by default to prevent default config files to supersede DB Config.
+	 *
+	 * @param array $config
+	 * @param bool  $overwrite Force value overwrite if the config key already exists
+	 */
+	function load(array $config, $overwrite = false);
+
+	/**
+	 * Gets a value from the config cache.
+	 *
+	 * @param string $cat     Config category
+	 * @param string $key       Config key
+	 *
+	 * @return mixed Returns the value of the Config entry or '!<unset>!' if not set
+	 */
+	function get($cat, $key = null);
+
+	/**
+	 * Sets a value in the config cache. Accepts raw output from the config table
+	 *
+	 * @param string $cat   Config category
+	 * @param string $key   Config key
+	 * @param mixed  $value Value to set
+	 *
+	 * @return bool True, if the value is set
+	 */
+	function set($cat, $key, $value);
+
+	/**
+	 * Deletes a value from the config cache.
+	 *
+	 * @param string $cat  Config category
+	 * @param string $key  Config key
+	 *
+	 * @return bool true, if deleted
+	 */
+	function delete($cat, $key);
+
+	/**
+	 * Checks if a value is set in the config cache.
+	 *
+	 * @param string $cat  Config category
+	 * @param string $key  Config key
+	 * @return bool
+	 */
+	function has($cat, $key = null);
+
+	/**
+	 * Returns the whole configuration cache
+	 *
+	 * @return array
+	 */
+	function getAll();
+}

src/Core/Config/Cache/IPConfigCache.php

@@ -0,0 +1,70 @@
+<?php
+
+namespace Friendica\Core\Config\Cache;
+
+/**
+ * The interface for a user-specific config cache
+ */
+interface IPConfigCache
+{
+	/**
+	 * Tries to load the specified configuration array into the user specific config array.
+	 * Doesn't overwrite previously set values by default to prevent default config files to supersede DB Config.
+	 *
+	 * @param int   $uid
+	 * @param array $config
+	 */
+	function loadP($uid, array $config);
+
+	/**
+	 * Retrieves a value from the user config cache
+	 *
+	 * @param int    $uid     User Id
+	 * @param string $cat     Config category
+	 * @param string $key     Config key
+	 *
+	 * @return string The value of the config entry or '!<unset>!' if not set
+	 */
+	function getP($uid, $cat, $key = null);
+
+	/**
+	 * Sets a value in the user config cache
+	 *
+	 * Accepts raw output from the pconfig table
+	 *
+	 * @param int    $uid   User Id
+	 * @param string $cat   Config category
+	 * @param string $key   Config key
+	 * @param mixed  $value Value to set
+	 */
+	function setP($uid, $cat, $key, $value);
+
+	/**
+	 * Deletes a value from the user config cache
+	 *
+	 * @param int    $uid User Id
+	 * @param string $cat Config category
+	 * @param string $key Config key
+	 *
+	 * @return bool true, if deleted
+	 */
+	function deleteP($uid, $cat, $key);
+
+
+	/**
+	 * Checks if a value is set in the user config cache.
+	 *
+	 * @param int    $uid  User Id
+	 * @param string $cat  Config category
+	 * @param string $key  Config key
+	 * @return bool
+	 */
+	function hasP($uid, $cat, $key = null);
+
+	/**
+	 * Returns the whole configuration cache
+	 *
+	 * @return array
+	 */
+	function getAll();
+}

src/Core/Config/Configuration.php

@@ -0,0 +1,153 @@
+<?php
+
+namespace Friendica\Core\Config;
+
+/**
+ * This class is responsible for all system-wide configuration values in Friendica
+ * There are two types of storage
+ * - The Config-Files    (loaded into the FileCache @see Cache\IConfigCache )
+ * - The Config-DB-Table (per Config-DB-adapter @see Adapter\IConfigAdapter )
+ */
+class Configuration
+{
+	/**
+	 * @var Cache\IConfigCache
+	 */
+	private $configCache;
+
+	/**
+	 * @var Adapter\IConfigAdapter
+	 */
+	private $configAdapter;
+
+	/**
+	 * @param Cache\IConfigCache     $configCache   The configuration cache (based on the config-files)
+	 * @param Adapter\IConfigAdapter $configAdapter The configuration DB-backend
+	 */
+	public function __construct(Cache\IConfigCache $configCache, Adapter\IConfigAdapter $configAdapter)
+	{
+		$this->configCache = $configCache;
+		$this->configAdapter = $configAdapter;
+
+		$this->load();
+	}
+
+	/**
+	 * Returns the Config Cache
+	 *
+	 * @return Cache\IConfigCache
+	 */
+	public function getCache()
+	{
+		return $this->configCache;
+	}
+
+	/**
+	 * @brief Loads all configuration values of family into a cached storage.
+	 *
+	 * All configuration values of the system are stored in the cache ( @see IConfigCache )
+	 *
+	 * @param string $cat The category of the configuration value
+	 *
+	 * @return void
+	 */
+	public function load($cat = 'config')
+	{
+		// If not connected, do nothing
+		if (!$this->configAdapter->isConnected()) {
+			return;
+		}
+
+		// load the whole category out of the DB into the cache
+		$this->configCache->load($this->configAdapter->load($cat), true);
+	}
+
+	/**
+	 * @brief Get a particular user's config variable given the category name
+	 * ($cat) and a $key.
+	 *
+	 * Get a particular config value from the given category ($cat)
+	 * and the $key from a cached storage either from the $this->configAdapter
+	 * (@see IConfigAdapter ) or from the $this->configCache (@see IConfigCache ).
+	 *
+	 * @param string  $cat        The category of the configuration value
+	 * @param string  $key           The configuration key to query
+	 * @param mixed   $default_value optional, The value to return if key is not set (default: null)
+	 * @param boolean $refresh       optional, If true the config is loaded from the db and not from the cache (default: false)
+	 *
+	 * @return mixed Stored value or null if it does not exist
+	 */
+	public function get($cat, $key, $default_value = null, $refresh = false)
+	{
+		// if the value isn't loaded or refresh is needed, load it to the cache
+		if ($this->configAdapter->isConnected() &&
+			(!$this->configAdapter->isLoaded($cat, $key) ||
+			$refresh)) {
+			$dbvalue = $this->configAdapter->get($cat, $key);
+
+			if ($dbvalue !== '!<unset>!') {
+				$this->configCache->set($cat, $key, $dbvalue);
+				return $dbvalue;
+			}
+		}
+
+		// use the config cache for return
+		if ($this->configCache->has($cat, $key)) {
+			return $this->configCache->get($cat, $key);
+		} else {
+			return $default_value;
+		}
+	}
+
+	/**
+	 * @brief Sets a configuration value for system config
+	 *
+	 * Stores a config value ($value) in the category ($cat) under the key ($key)
+	 *
+	 * Note: Please do not store booleans - convert to 0/1 integer values!
+	 *
+	 * @param string $cat The category of the configuration value
+	 * @param string $key    The configuration key to set
+	 * @param mixed  $value  The value to store
+	 *
+	 * @return bool Operation success
+	 */
+	public function set($cat, $key, $value)
+	{
+		// set the cache first
+		$cached = $this->configCache->set($cat, $key, $value);
+
+		// If there is no connected adapter, we're finished
+		if (!$this->configAdapter->isConnected()) {
+			return $cached;
+		}
+
+		$stored = $this->configAdapter->set($cat, $key, $value);
+
+		return $cached && $stored;
+	}
+
+	/**
+	 * @brief Deletes the given key from the system configuration.
+	 *
+	 * Removes the configured value from the stored cache in $this->configCache
+	 * (@see ConfigCache ) and removes it from the database (@see IConfigAdapter ).
+	 *
+	 * @param string $cat The category of the configuration value
+	 * @param string $key    The configuration key to delete
+	 *
+	 * @return bool
+	 */
+	public function delete($cat, $key)
+	{
+		$cacheRemoved = $this->configCache->delete($cat, $key);
+
+		if (!$this->configAdapter->isConnected()) {
+			return $cacheRemoved;
+		}
+
+		$storeRemoved = $this->configAdapter->delete($cat, $key);
+
+		return $cacheRemoved || $storeRemoved;
+	}
+}

src/Core/Config/IConfigCache.php

@@ -1,39 +0,0 @@
-<?php
-
-namespace Friendica\Core\Config;
-
-/**
- * The interface for a system-wide ConfigCache
- */
-interface IConfigCache
-{
-	/**
-	 * @param string $cat     Config category
-	 * @param string $key       Config key
-	 * @param mixed  $default Default value if it isn't set
-	 *
-	 * @return mixed Returns the value of the Config entry
-	 */
-	function get($cat, $key = null, $default = null);
-
-	/**
-	 * Sets a value in the config cache. Accepts raw output from the config table
-	 *
-	 * @param string $cat   Config category
-	 * @param string $key   Config key
-	 * @param mixed  $value Value to set
-	 *
-	 * @return bool True, if the value is set
-	 */
-	function set($cat, $key, $value);
-
-	/**
-	 * Deletes a value from the config cache
-	 *
-	 * @param string $cat  Config category
-	 * @param string $key  Config key
-	 */
-	function delete($cat, $key);
-
-	function getAll();
-}

src/Core/Config/IPConfigCache.php

@@ -1,44 +0,0 @@
-<?php
-
-namespace Friendica\Core\Config;
-
-/**
- * The interface for a user-specific config cache
- */
-interface IPConfigCache
-{
-	/**
-	 * Retrieves a value from the user config cache
-	 *
-	 * @param int    $uid     User Id
-	 * @param string $cat     Config category
-	 * @param string $key     Config key
-	 * @param mixed  $default Default value if key isn't set
-	 *
-	 * @return string The value of the config entry
-	 */
-	function getP($uid, $cat, $key = null, $default = null);
-
-	/**
-	 * Sets a value in the user config cache
-	 *
-	 * Accepts raw output from the pconfig table
-	 *
-	 * @param int    $uid   User Id
-	 * @param string $cat   Config category
-	 * @param string $key   Config key
-	 * @param mixed  $value Value to set
-	 */
-	function setP($uid, $cat, $key, $value);
-
-	/**
-	 * Deletes a value from the user config cache
-	 *
-	 * @param int    $uid User Id
-	 * @param string $cat Config category
-	 * @param string $key Config key
-	 */
-	function deleteP($uid, $cat, $key);
-
-	function getAll();
-}

src/Core/Config/JITConfigAdapter.php

@@ -1,172 +0,0 @@
-<?php
-namespace Friendica\Core\Config;
-
-use Friendica\Database\DBA;
-
-/**
- * JustInTime Configuration Adapter
- *
- * Default Config Adapter. Provides the best performance for pages loading few configuration variables.
- *
- * @author Hypolite Petovan <hypolite@mrpetovan.com>
- */
-class JITConfigAdapter extends AbstractDbaConfigAdapter implements IConfigAdapter
-{
-	private $cache;
-	private $in_db;
-
-	/**
-	 * @var IConfigCache The config cache of this driver
-	 */
-	private $configCache;
-
-	/**
-	 * @param IConfigCache $configCache The config cache of this driver
-	 */
-	public function __construct(IConfigCache $configCache)
-	{
-		$this->configCache = $configCache;
-		$this->connected = DBA::connected();
-	}
-
-	/**
-	 * {@inheritdoc}
-	 */
-	public function load($cat = "config")
-	{
-		if (!$this->isConnected()) {
-			return;
-		}
-
-		// We don't preload "system" anymore.
-		// This reduces the number of database reads a lot.
-		if ($cat === 'system') {
-			return;
-		}
-
-		$configs = DBA::select('config', ['v', 'k'], ['cat' => $cat]);
-		while ($config = DBA::fetch($configs)) {
-			$k = $config['k'];
-
-			$this->configCache->set($cat, $k, $config['v']);
-
-			if ($cat !== 'config') {
-				$this->cache[$cat][$k] = $config['v'];
-				$this->in_db[$cat][$k] = true;
-			}
-		}
-		DBA::close($configs);
-	}
-
-	/**
-	 * {@inheritdoc}
-	 */
-	public function get($cat, $k, $default_value = null, $refresh = false)
-	{
-		if (!$this->isConnected()) {
-			return $default_value;
-		}
-
-		if (!$refresh) {
-			// Do we have the cached value? Then return it
-			if (isset($this->cache[$cat][$k])) {
-				if ($this->cache[$cat][$k] === '!<unset>!') {
-					return $default_value;
-				} else {
-					return $this->cache[$cat][$k];
-				}
-			}
-		}
-
-		$config = DBA::selectFirst('config', ['v'], ['cat' => $cat, 'k' => $k]);
-		if (DBA::isResult($config)) {
-			// manage array value
-			$value = (preg_match("|^a:[0-9]+:{.*}$|s", $config['v']) ? unserialize($config['v']) : $config['v']);
-
-			// Assign the value from the database to the cache
-			$this->cache[$cat][$k] = $value;
-			$this->in_db[$cat][$k] = true;
-			return $value;
-		} elseif ($this->configCache->get($cat, $k) !== null) {
-			// Assign the value (mostly) from config/local.config.php file to the cache
-			$this->cache[$cat][$k] = $this->configCache->get($cat, $k);
-			$this->in_db[$cat][$k] = false;
-
-			return $this->configCache->get($cat, $k);
-		} elseif ($this->configCache->get('config', $k) !== null) {
-			// Assign the value (mostly) from config/local.config.php file to the cache
-			$this->cache[$k] = $this->configCache->get('config', $k);
-			$this->in_db[$k] = false;
-
-			return $this->configCache->get('config', $k);
-		}
-
-		$this->cache[$cat][$k] = '!<unset>!';
-		$this->in_db[$cat][$k] = false;
-
-		return $default_value;
-	}
-
-	/**
-	 * {@inheritdoc}
-	 */
-	public function set($cat, $k, $value)
-	{
-		if (!$this->isConnected()) {
-			return false;
-		}
-
-		// We store our setting values in a string variable.
-		// So we have to do the conversion here so that the compare below works.
-		// The exception are array values.
-		$dbvalue = (!is_array($value) ? (string)$value : $value);
-
-		$stored = $this->get($cat, $k, null, true);
-
-		if (!isset($this->in_db[$cat])) {
-			$this->in_db[$cat] = [];
-		}
-		if (!isset($this->in_db[$cat][$k])) {
-			$this->in_db[$cat] = false;
-		}
-
-		if (($stored === $dbvalue) && $this->in_db[$cat][$k]) {
-			return true;
-		}
-
-		$this->configCache->set($cat, $k, $value);
-
-		// Assign the just added value to the cache
-		$this->cache[$cat][$k] = $dbvalue;
-
-		// manage array value
-		$dbvalue = (is_array($value) ? serialize($value) : $dbvalue);
-
-		$result = DBA::update('config', ['v' => $dbvalue], ['cat' => $cat, 'k' => $k], true);
-
-		if ($result) {
-			$this->in_db[$cat][$k] = true;
-		}
-
-		return $result;
-	}
-
-	/**
-	 * {@inheritdoc}
-	 */
-	public function delete($cat, $k)
-	{
-		if (!$this->isConnected()) {
-			return false;
-		}
-
-		if (isset($this->cache[$cat][$k])) {
-			unset($this->cache[$cat][$k]);
-			unset($this->in_db[$cat][$k]);
-		}
-
-		$result = DBA::delete('config', ['cat' => $cat, 'k' => $k]);
-
-		return $result;
-	}
-}

src/Core/Config/JITPConfigAdapter.php

@@ -1,136 +0,0 @@
-<?php
-namespace Friendica\Core\Config;
-
-use Friendica\Database\DBA;
-
-/**
- * JustInTime User Configuration Adapter
- *
- * Default PConfig Adapter. Provides the best performance for pages loading few configuration variables.
- *
- * @author Hypolite Petovan <hypolite@mrpetovan.com>
- */
-class JITPConfigAdapter implements IPConfigAdapter
-{
-	private $in_db;
-
-	/**
-	 * The config cache of this adapter
-	 * @var IPConfigCache
-	 */
-	private $configCache;
-
-	/**
-	 * @param IPConfigCache $configCache The config cache of this adapter
-	 */
-	public function __construct(IPConfigCache $configCache)
-	{
-		$this->configCache = $configCache;
-	}
-
-	/**
-	 * {@inheritdoc}
-	 */
-	public function load($uid, $cat)
-	{
-		$pconfigs = DBA::select('pconfig', ['v', 'k'], ['cat' => $cat, 'uid' => $uid]);
-		if (DBA::isResult($pconfigs)) {
-			while ($pconfig = DBA::fetch($pconfigs)) {
-				$k = $pconfig['k'];
-
-				$this->configCache->setP($uid, $cat, $k, $pconfig['v']);
-
-				$this->in_db[$uid][$cat][$k] = true;
-			}
-		} else if ($cat != 'config') {
-			// Negative caching
-			$this->configCache->setP($uid, $cat, null, "!<unset>!");
-		}
-		DBA::close($pconfigs);
-	}
-
-	/**
-	 * {@inheritdoc}
-	 */
-	public function get($uid, $cat, $k, $default_value = null, $refresh = false)
-	{
-		if (!$refresh) {
-			// Looking if the whole family isn't set
-			if ($this->configCache->getP($uid, $cat) !== null) {
-				if ($this->configCache->getP($uid, $cat) === '!<unset>!') {
-					return $default_value;
-				}
-			}
-
-			if ($this->configCache->getP($uid, $cat, $k) !== null) {
-				if ($this->configCache->getP($uid, $cat, $k) === '!<unset>!') {
-					return $default_value;
-				}
-				return $this->configCache->getP($uid, $cat, $k);
-			}
-		}
-
-		$pconfig = DBA::selectFirst('pconfig', ['v'], ['uid' => $uid, 'cat' => $cat, 'k' => $k]);
-		if (DBA::isResult($pconfig)) {
-			$val = (preg_match("|^a:[0-9]+:{.*}$|s", $pconfig['v']) ? unserialize($pconfig['v']) : $pconfig['v']);
-
-			$this->configCache->setP($uid, $cat, $k, $val);
-
-			$this->in_db[$uid][$cat][$k] = true;
-
-			return $val;
-		} else {
-			$this->configCache->setP($uid, $cat, $k, '!<unset>!');
-
-			$this->in_db[$uid][$cat][$k] = false;
-
-			return $default_value;
-		}
-	}
-
-	/**
-	 * {@inheritdoc}
-	 */
-	public function set($uid, $cat, $k, $value)
-	{
-		// We store our setting values in a string variable.
-		// So we have to do the conversion here so that the compare below works.
-		// The exception are array values.
-		$dbvalue = (!is_array($value) ? (string)$value : $value);
-
-		$stored = $this->get($uid, $cat, $k, null, true);
-
-		if (($stored === $dbvalue) && $this->in_db[$uid][$cat][$k]) {
-			return true;
-		}
-
-		$this->configCache->setP($uid, $cat, $k, $value);
-
-		// manage array value
-		$dbvalue = (is_array($value) ? serialize($value) : $dbvalue);
-
-		$result = DBA::update('pconfig', ['v' => $dbvalue], ['uid' => $uid, 'cat' => $cat, 'k' => $k], true);
-
-		if ($result) {
-			$this->in_db[$uid][$cat][$k] = true;
-		}
-
-		return $result;
-	}
-
-	/**
-	 * {@inheritdoc}
-	 */
-	public function delete($uid, $cat, $k)
-	{
-		$this->configCache->deleteP($uid, $cat, $k);
-
-		if (!empty($this->in_db[$uid][$cat][$k])) {
-			unset($this->in_db[$uid][$cat][$k]);
-		}
-
-		$result = DBA::delete('pconfig', ['uid' => $uid, 'cat' => $cat, 'k' => $k]);
-
-		return $result;
-	}
-}

src/Core/Config/PConfiguration.php

@@ -0,0 +1,149 @@
+<?php
+
+namespace Friendica\Core\Config;
+
+/**
+ * This class is responsible for the user-specific configuration values in Friendica
+ * The values are set through the Config-DB-Table (per Config-DB-adapter @see Adapter\IPConfigAdapter )
+ *
+ * The configuration cache (@see Cache\IPConfigCache ) is used for temporary caching of database calls. This will
+ * increase the performance.
+ */
+class PConfiguration
+{
+	/**
+	 * @var Cache\IPConfigCache
+	 */
+	private $configCache;
+
+	/**
+	 * @var Adapter\IPConfigAdapter
+	 */
+	private $configAdapter;
+
+	/**
+	 * @param Cache\IPConfigCache     $configCache   The configuration cache
+	 * @param Adapter\IPConfigAdapter $configAdapter The configuration DB-backend
+	 */
+	public function __construct(Cache\IPConfigCache $configCache, Adapter\IPConfigAdapter $configAdapter)
+	{
+		$this->configCache = $configCache;
+		$this->configAdapter = $configAdapter;
+	}
+
+	/**
+	 * @brief Loads all configuration values of a user's config family into a cached storage.
+	 *
+	 * All configuration values of the given user are stored with the $uid in
+	 * the cache ( @see IPConfigCache )
+	 *
+	 * @param string $uid The user_id
+	 * @param string $cat The category of the configuration value
+	 *
+	 * @return void
+	 */
+	public function load($uid, $cat = 'config')
+	{
+		// If not connected, do nothing
+		if (!$this->configAdapter->isConnected()) {
+			return;
+		}
+
+		// load the whole category out of the DB into the cache
+		$this->configCache->loadP($uid, $this->configAdapter->load($uid, $cat));
+	}
+
+	/**
+	 * @brief Get a particular user's config variable given the category name
+	 * ($cat) and a key.
+	 *
+	 * Get a particular user's config value from the given category ($cat)
+	 * and the $key with the $uid from a cached storage either from the $this->configAdapter
+	 * (@see IConfigAdapter ) or from the $this->configCache (@see IConfigCache ).
+	 *
+	 * @param string  $uid           The user_id
+	 * @param string  $cat           The category of the configuration value
+	 * @param string  $key           The configuration key to query
+	 * @param mixed   $default_value optional, The value to return if key is not set (default: null)
+	 * @param boolean $refresh       optional, If true the config is loaded from the db and not from the cache (default: false)
+	 *
+	 * @return mixed Stored value or null if it does not exist
+	 */
+	public function get($uid, $cat, $key, $default_value = null, $refresh = false)
+	{
+		// if the value isn't loaded or refresh is needed, load it to the cache
+		if ($this->configAdapter->isConnected() &&
+			(!$this->configAdapter->isLoaded($uid, $cat, $key) ||
+				$refresh)) {
+			$dbValue = $this->configAdapter->get($uid, $cat, $key);
+
+			if ($dbValue !== '!<unset>!') {
+				$this->configCache->setP($uid, $cat, $key, $dbValue);
+				return $dbValue;
+			}
+		}
+
+		// use the config cache for return
+		if ($this->configCache->hasP($uid, $cat, $key)) {
+			return $this->configCache->getP($uid, $cat, $key);
+		} else {
+			return $default_value;
+		}
+	}
+
+	/**
+	 * @brief Sets a configuration value for a user
+	 *
+	 * Stores a config value ($value) in the category ($family) under the key ($key)
+	 * for the user_id $uid.
+	 *
+	 * @note  Please do not store booleans - convert to 0/1 integer values!
+	 *
+	 * @param string $uid    The user_id
+	 * @param string $cat    The category of the configuration value
+	 * @param string $key    The configuration key to set
+	 * @param mixed  $value  The value to store
+	 *
+	 * @return bool Operation success
+	 */
+	public function set($uid, $cat, $key, $value)
+	{
+		// set the cache first
+		$cached = $this->configCache->setP($uid, $cat, $key, $value);
+
+		// If there is no connected adapter, we're finished
+		if (!$this->configAdapter->isConnected()) {
+			return $cached;
+		}
+
+		$stored = $this->configAdapter->set($uid, $cat, $key, $value);
+
+		return $cached && $stored;
+	}
+
+	/**
+	 * @brief Deletes the given key from the users's configuration.
+	 *
+	 * Removes the configured value from the stored cache in $this->configCache
+	 * (@see ConfigCache ) and removes it from the database (@see IConfigAdapter )
+	 * with the given $uid.
+	 *
+	 * @param string $uid The user_id
+	 * @param string $cat The category of the configuration value
+	 * @param string $key The configuration key to delete
+	 *
+	 * @return bool
+	 */
+	public function delete($uid, $cat, $key)
+	{
+		$cacheRemoved = $this->configCache->deleteP($uid, $cat, $key);
+
+		if (!$this->configAdapter->isConnected()) {
+			return $cacheRemoved;
+		}
+
+		$storeRemoved = $this->configAdapter->delete($uid, $cat, $key);
+
+		return $cacheRemoved || $storeRemoved;
+	}
+}

src/Core/Console/AutomaticInstallation.php

@@ -100,10 +100,10 @@ HELP;
 				}
 			}
 
-			$db_host = $a->getConfig()->get('database', 'hostname');
+			$db_host = $a->getConfigCache()->get('database', 'hostname');
-			$db_user = $a->getConfig()->get('database', 'username');
+			$db_user = $a->getConfigCache()->get('database', 'username');
-			$db_pass = $a->getConfig()->get('database', 'password');
+			$db_pass = $a->getConfigCache()->get('database', 'password');
-			$db_data = $a->getConfig()->get('database', 'database');
+			$db_data = $a->getConfigCache()->get('database', 'database');
 		} else {
 			// Creating config file
 			$this->out("Creating config file...\n");
@@ -146,7 +146,7 @@ HELP;
 
 		$installer->resetChecks();
 
-		if (!$installer->checkDB($a->getConfig(), $db_host, $db_user, $db_pass, $db_data)) {
+		if (!$installer->checkDB($a->getConfigCache(), $a->getProfiler(), $db_host, $db_user, $db_pass, $db_data)) {
 			$errorMessage = $this->extractErrors($installer->getChecks());
 			throw new RuntimeException($errorMessage);
 		}

src/Core/Console/Config.php

@@ -124,9 +124,9 @@ HELP;
 			$cat = $this->getArgument(0);
 			Core\Config::load($cat);
 
-			if ($a->getConfig()->get($cat) !== null) {
+			if ($a->getConfigCache()->get($cat) !== null) {
 				$this->out("[{$cat}]");
-				$catVal = $a->getConfig()->get($cat);
+				$catVal = $a->getConfigCache()->get($cat);
 				foreach ($catVal as $key => $value) {
 					if (is_array($value)) {
 						foreach ($value as $k => $v) {
@@ -148,7 +148,7 @@ HELP;
 				$this->out('Warning: The JIT (Just In Time) Config adapter doesn\'t support loading the entire configuration, showing file config only');
 			}
 
-			$config = $a->getConfig()->getAll();
+			$config = $a->getConfigCache()->getAll();
 			foreach ($config as $cat => $section) {
 				if (is_array($section)) {
 					foreach ($section as $key => $value) {

src/Core/Console/Typo.php

@@ -43,7 +43,7 @@ HELP;
 			throw new \Asika\SimpleConsole\CommandArgsException('Too many arguments');
 		}
 
-		$php_path = BaseObject::getApp()->getConfig()->get('config', 'php_path', 'php');
+		$php_path = BaseObject::getApp()->getConfigCache()->get('config', 'php_path', 'php');
 
 		if ($this->getOption('v')) {
 			$this->out('Directory: src');

src/Core/Installer.php

@@ -6,11 +6,12 @@ namespace Friendica\Core;
 
 use DOMDocument;
 use Exception;
-use Friendica\Core\Config\ConfigCache;
+use Friendica\Core\Config\Cache\IConfigCache;
 use Friendica\Database\DBA;
 use Friendica\Database\DBStructure;
 use Friendica\Object\Image;
 use Friendica\Util\Network;
+use Friendica\Util\Profiler;
 use Friendica\Util\Strings;
 
 /**
@@ -590,7 +591,8 @@ class Installer
 	/**
 	 * Checking the Database connection and if it is available for the current installation
 	 *
-	 * @param ConfigCache $configCache The configuration cache
+	 * @param IConfigCache $configCache The configuration cache
+	 * @param Profiler    $profiler    The profiler of this app
 	 * @param string $dbhost           Hostname/IP of the Friendica Database
 	 * @param string $dbuser           Username of the Database connection credentials
 	 * @param string $dbpass           Password of the Database connection credentials
@@ -599,9 +601,9 @@ class Installer
 	 * @return bool true if the check was successful, otherwise false
 	 * @throws Exception
 	 */
-	public function checkDB(ConfigCache $configCache, $dbhost, $dbuser, $dbpass, $dbdata)
+	public function checkDB(IConfigCache $configCache, Profiler $profiler, $dbhost, $dbuser, $dbpass, $dbdata)
 	{
-		if (!DBA::connect($configCache, $dbhost, $dbuser, $dbpass, $dbdata)) {
+		if (!DBA::connect($configCache, $profiler, $dbhost, $dbuser, $dbpass, $dbdata)) {
 			$this->addCheck(L10n::t('Could not connect to database.'), false, true, '');
 
 			return false;

src/Core/Logger.php

@@ -5,8 +5,6 @@
 namespace Friendica\Core;
 
 use Friendica\BaseObject;
-use Friendica\Factory\LoggerFactory;
-use Friendica\Network\HTTPException\InternalServerErrorException;
 use Psr\Log\LoggerInterface;
 use Psr\Log\LogLevel;
 
@@ -67,73 +65,22 @@ class Logger extends BaseObject
 
 	/**
 	 * Sets the default logging handler for Friendica.
-	 * @todo Can be combined with other handlers too if necessary, could be configurable.
 	 *
 	 * @param LoggerInterface $logger The Logger instance of this Application
-	 *
-	 * @throws InternalServerErrorException if the logger factory is incompatible to this logger
 	 */
-	public static function setLogger($logger)
+	public static function init(LoggerInterface $logger)
 	{
-		$debugging = Config::get('system', 'debugging');
-		$logfile = Config::get('system', 'logfile');
-		$loglevel = Config::get('system', 'loglevel');
-
-		if (!$debugging || !$logfile) {
-			return;
-		}
-
-		$loglevel = self::mapLegacyConfigDebugLevel((string)$loglevel);
-
-		LoggerFactory::addStreamHandler($logger, $logfile, $loglevel);
-
 		self::$logger = $logger;
-
-		$logfile = Config::get('system', 'dlogfile');
-
-		if (!$logfile) {
-			return;
-		}
-
-		$developIp = Config::get('system', 'dlogip');
-
-		self::$devLogger = LoggerFactory::createDev('develop', $developIp);
-		LoggerFactory::addStreamHandler(self::$devLogger, $logfile, LogLevel::DEBUG);
 	}
 
 	/**
-	 * Mapping a legacy level to the PSR-3 compliant levels
+	 * Sets the default dev-logging handler for Friendica.
-	 * @see https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md#5-psrlogloglevel
 	 *
-	 * @param string $level the level to be mapped
+	 * @param LoggerInterface $logger The Logger instance of this Application
-	 *
-	 * @return string the PSR-3 compliant level
 	 */
-	private static function mapLegacyConfigDebugLevel($level)
+	public static function setDevLogger(LoggerInterface $logger)
 	{
-		switch ($level) {
+		self::$devLogger = $logger;
-			// legacy WARNING
-			case "0":
-				return LogLevel::ERROR;
-			// legacy INFO
-			case "1":
-				return LogLevel::WARNING;
-			// legacy TRACE
-			case "2":
-				return LogLevel::NOTICE;
-			// legacy DEBUG
-			case "3":
-				return LogLevel::INFO;
-			// legacy DATA
-			case "4":
-				return LogLevel::DEBUG;
-			// legacy ALL
-			case "5":
-				return LogLevel::DEBUG;
-			// default if nothing set
-			default:
-				return $level;
-		}
 	}
 
 	/**
@@ -155,7 +102,7 @@ class Logger extends BaseObject
 
 		$stamp1 = microtime(true);
 		self::$logger->emergency($message, $context);
-		self::getApp()->saveTimestamp($stamp1, 'file');
+		self::getApp()->GetProfiler()->saveTimestamp($stamp1, 'file', System::callstack());
 	}
 
 	/**
@@ -179,7 +126,7 @@ class Logger extends BaseObject
 
 		$stamp1 = microtime(true);
 		self::$logger->alert($message, $context);
-		self::getApp()->saveTimestamp($stamp1, 'file');
+		self::getApp()->getProfiler()->saveTimestamp($stamp1, 'file', System::callstack());
 	}
 
 	/**
@@ -202,7 +149,7 @@ class Logger extends BaseObject
 
 		$stamp1 = microtime(true);
 		self::$logger->critical($message, $context);
-		self::getApp()->saveTimestamp($stamp1, 'file');
+		self::getApp()->getProfiler()->saveTimestamp($stamp1, 'file', System::callstack());
 	}
 
 	/**
@@ -225,7 +172,7 @@ class Logger extends BaseObject
 
 		$stamp1 = microtime(true);
 		self::$logger->error($message, $context);
-		self::getApp()->saveTimestamp($stamp1, 'file');
+		self::getApp()->getProfiler()->saveTimestamp($stamp1, 'file', System::callstack());
 	}
 
 	/**
@@ -249,7 +196,7 @@ class Logger extends BaseObject
 
 		$stamp1 = microtime(true);
 		self::$logger->warning($message, $context);
-		self::getApp()->saveTimestamp($stamp1, 'file');
+		self::getApp()->getProfiler()->saveTimestamp($stamp1, 'file', System::callstack());
 	}
 
 	/**
@@ -270,7 +217,7 @@ class Logger extends BaseObject
 
 		$stamp1 = microtime(true);
 		self::$logger->notice($message, $context);
-		self::getApp()->saveTimestamp($stamp1, 'file');
+		self::getApp()->getProfiler()->saveTimestamp($stamp1, 'file', System::callstack());
 	}
 
 	/**
@@ -293,7 +240,7 @@ class Logger extends BaseObject
 
 		$stamp1 = microtime(true);
 		self::$logger->info($message, $context);
-		self::getApp()->saveTimestamp($stamp1, 'file');
+		self::getApp()->getProfiler()->saveTimestamp($stamp1, 'file', System::callstack());
 	}
 
 	/**
@@ -314,28 +261,28 @@ class Logger extends BaseObject
 
 		$stamp1 = microtime(true);
 		self::$logger->debug($message, $context);
-		self::getApp()->saveTimestamp($stamp1, 'file');
+		self::getApp()->getProfiler()->saveTimestamp($stamp1, 'file', System::callstack());
 	}
 
-    /**
+	    /**
-     * @brief Logs the given message at the given log level
+	 * @brief Logs the given message at the given log level
-     *
+	 *
-     * @param string $msg
+	 * @param string $msg
-     * @param string $level
+	 * @param string $level
 	 *
 	 * @throws \Exception
 	 * @deprecated since 2019.03 Use Logger::debug() Logger::info() , ... instead
-     */
+	 */
-    public static function log($msg, $level = LogLevel::INFO)
+	public static function log($msg, $level = LogLevel::INFO)
-    {
+	{
 		if (!isset(self::$logger)) {
 			return;
 		}
 
-        $stamp1 = microtime(true);
+		$stamp1 = microtime(true);
 		self::$logger->log($level, $msg);
-        self::getApp()->saveTimestamp($stamp1, "file");
+		self::getApp()->getProfiler()->saveTimestamp($stamp1, "file", System::callstack());
-    }
+	}
 
 	/**
 	 * @brief An alternative logger for development.
@@ -347,14 +294,14 @@ class Logger extends BaseObject
 	 * @param string $level
 	 * @throws \Exception
 	 */
-    public static function devLog($msg, $level = LogLevel::DEBUG)
+	public static function devLog($msg, $level = LogLevel::DEBUG)
-    {
+	{
 		if (!isset(self::$logger)) {
 			return;
 		}
 
-        $stamp1 = microtime(true);
+		$stamp1 = microtime(true);
-        self::$devLogger->log($level, $msg);
+		self::$devLogger->log($level, $msg);
-        self::getApp()->saveTimestamp($stamp1, "file");
+		self::getApp()->getProfiler()->saveTimestamp($stamp1, "file", System::callstack());
-    }
+	}
 }

src/Core/PConfig.php

@@ -18,123 +18,78 @@ namespace Friendica\Core;
 class PConfig
 {
 	/**
-	 * @var Config\IPConfigAdapter
+	 * @var Config\PConfiguration
 	 */
-	private static $adapter;
+	private static $config;
-
-	/**
-	 * @var Config\IPConfigCache
-	 */
-	private static $cache;
 
 	/**
 	 * Initialize the config with only the cache
 	 *
-	 * @param Config\IPConfigCache $cache  The configuration cache
+	 * @param Config\PConfiguration $config The configuration cache
 	 */
-	public static function init(Config\IPConfigCache $cache)
+	public static function init(Config\PConfiguration $config)
 	{
-		self::$cache  = $cache;
+		self::$config = $config;
-	}
-
-	/**
-	 * Add the adapter for DB-backend
-	 *
-	 * @param Config\IPConfigAdapter $adapter
-	 */
-	public static function setAdapter(Config\IPConfigAdapter $adapter)
-	{
-		self::$adapter = $adapter;
 	}
 
 	/**
 	 * @brief Loads all configuration values of a user's config family into a cached storage.
 	 *
-	 * All configuration values of the given user are stored with the $uid in
+	 * @param string $uid The user_id
-	 * the cache ( @see IPConfigCache )
+	 * @param string $cat The category of the configuration value
-	 *
-	 * @param string $uid    The user_id
-	 * @param string $family The category of the configuration value
 	 *
 	 * @return void
 	 */
-	public static function load($uid, $family)
+	public static function load($uid, $cat)
 	{
-		if (!isset(self::$adapter)) {
+		self::$config->load($uid, $cat);
-			return;
-		}
-
-		self::$adapter->load($uid, $family);
 	}
 
 	/**
 	 * @brief Get a particular user's config variable given the category name
-	 * ($family) and a key.
+	 * ($cat) and a key.
-	 *
-	 * Get a particular user's config value from the given category ($family)
-	 * and the $key with the $uid from a cached storage either from the self::$adapter
-	 * (@see IConfigAdapter ) or from the static::$cache (@see IConfigCache ).
 	 *
 	 * @param string  $uid           The user_id
-	 * @param string  $family        The category of the configuration value
+	 * @param string  $cat           The category of the configuration value
 	 * @param string  $key           The configuration key to query
 	 * @param mixed   $default_value optional, The value to return if key is not set (default: null)
 	 * @param boolean $refresh       optional, If true the config is loaded from the db and not from the cache (default: false)
 	 *
 	 * @return mixed Stored value or null if it does not exist
 	 */
-	public static function get($uid, $family, $key, $default_value = null, $refresh = false)
+	public static function get($uid, $cat, $key, $default_value = null, $refresh = false)
 	{
-		if (!isset(self::$adapter)) {
+		return self::$config->get($uid, $cat, $key, $default_value, $refresh);
-			return self::$cache->getP($uid, $family, $key, $default_value);
-		}
-
-		return self::$adapter->get($uid, $family, $key, $default_value, $refresh);
 	}
 
 	/**
 	 * @brief Sets a configuration value for a user
 	 *
-	 * Stores a config value ($value) in the category ($family) under the key ($key)
-	 * for the user_id $uid.
-	 *
 	 * @note  Please do not store booleans - convert to 0/1 integer values!
 	 *
 	 * @param string $uid    The user_id
-	 * @param string $family The category of the configuration value
+	 * @param string $cat    The category of the configuration value
 	 * @param string $key    The configuration key to set
 	 * @param mixed  $value  The value to store
 	 *
 	 * @return bool Operation success
 	 */
-	public static function set($uid, $family, $key, $value)
+	public static function set($uid, $cat, $key, $value)
 	{
-		if (!isset(self::$adapter)) {
+		return self::$config->set($uid, $cat, $key, $value);
-			return self::$cache->setP($uid, $family, $key, $value);
-		}
-
-		return self::$adapter->set($uid, $family, $key, $value);
 	}
 
 	/**
 	 * @brief Deletes the given key from the users's configuration.
 	 *
-	 * Removes the configured value from the stored cache in self::$config
+	 * @param string $uid The user_id
-	 * (@see ConfigCache ) and removes it from the database (@see IConfigAdapter )
+	 * @param string $cat The category of the configuration value
-	 * with the given $uid.
+	 * @param string $key The configuration key to delete
 	 *
-	 * @param string $uid    The user_id
+	 * @return bool
-	 * @param string $family The category of the configuration value
-	 * @param string $key    The configuration key to delete
-	 *
-	 * @return mixed
 	 */
-	public static function delete($uid, $family, $key)
+	public static function delete($uid, $cat, $key)
 	{
-		if (!isset(self::$adapter)) {
+		return self::$config->delete($uid, $cat, $key);
-			return self::$cache->deleteP($uid, $family, $key);
-		}
-
-		return self::$adapter->delete($uid, $family, $key);
 	}
 }

src/Core/Renderer.php

@@ -74,7 +74,7 @@ class Renderer extends BaseObject
             exit();
         }
 
-        $a->saveTimestamp($stamp1, "rendering");
+		$a->getProfiler()->saveTimestamp($stamp1, "rendering", System::callstack());
 
         return $output;
     }
@@ -101,7 +101,7 @@ class Renderer extends BaseObject
             exit();
         }
 
-        $a->saveTimestamp($stamp1, "file");
+        $a->getProfiler()->saveTimestamp($stamp1, "file", System::callstack());
 
         return $template;
     }

src/Core/Theme.php

@@ -51,7 +51,7 @@ class Theme
 		$a = \get_app();
 		$stamp1 = microtime(true);
 		$theme_file = file_get_contents("view/theme/$theme/theme.php");
-		$a->saveTimestamp($stamp1, "file");
+		$a->getProfiler()->saveTimestamp($stamp1, "file", System::callstack());
 
 		$result = preg_match("|/\*.*\*/|msU", $theme_file, $matches);
 

src/Core/Worker.php

@@ -380,20 +380,7 @@ class Worker
 
 		// We use the callstack here to analyze the performance of executed worker entries.
 		// For this reason the variables have to be initialized.
-		if (Config::get("system", "profiler")) {
+		$a->getProfiler()->reset();
-			$a->performance["start"] = microtime(true);
-			$a->performance["database"] = 0;
-			$a->performance["database_write"] = 0;
-			$a->performance["cache"] = 0;
-			$a->performance["cache_write"] = 0;
-			$a->performance["network"] = 0;
-			$a->performance["file"] = 0;
-			$a->performance["rendering"] = 0;
-			$a->performance["parser"] = 0;
-			$a->performance["marktime"] = 0;
-			$a->performance["markstart"] = microtime(true);
-			$a->callstack = [];
-		}
 
 		// For better logging create a new process id for every worker call
 		// But preserve the old one for the worker
@@ -452,76 +439,7 @@ class Worker
 
 		Logger::log("Process ".$mypid." - Prio ".$queue["priority"]." - ID ".$queue["id"].": ".$funcname." - done in ".number_format($duration, 4)." seconds. Process PID: ".$new_process_id);
 
-		// Write down the performance values into the log
+		$a->getProfiler()->saveLog("ID " . $queue["id"] . ": " . $funcname);
-		if (Config::get("system", "profiler")) {
-			$duration = microtime(true)-$a->performance["start"];
-
-			$o = '';
-			if (Config::get("rendertime", "callstack")) {
-				if (isset($a->callstack["database"])) {
-					$o .= "\nDatabase Read:\n";
-					foreach ($a->callstack["database"] as $func => $time) {
-						$time = round($time, 3);
-						if ($time > 0) {
-							$o .= $func.": ".$time."\n";
-						}
-					}
-				}
-				if (isset($a->callstack["database_write"])) {
-					$o .= "\nDatabase Write:\n";
-					foreach ($a->callstack["database_write"] as $func => $time) {
-						$time = round($time, 3);
-						if ($time > 0) {
-							$o .= $func.": ".$time."\n";
-						}
-					}
-				}
-				if (isset($a->callstack["dache"])) {
-					$o .= "\nCache Read:\n";
-					foreach ($a->callstack["dache"] as $func => $time) {
-						$time = round($time, 3);
-						if ($time > 0) {
-							$o .= $func.": ".$time."\n";
-						}
-					}
-				}
-				if (isset($a->callstack["dache_write"])) {
-					$o .= "\nCache Write:\n";
-					foreach ($a->callstack["dache_write"] as $func => $time) {
-						$time = round($time, 3);
-						if ($time > 0) {
-							$o .= $func.": ".$time."\n";
-						}
-					}
-				}
-				if (isset($a->callstack["network"])) {
-					$o .= "\nNetwork:\n";
-					foreach ($a->callstack["network"] as $func => $time) {
-						$time = round($time, 3);
-						if ($time > 0) {
-							$o .= $func.": ".$time."\n";
-						}
-					}
-				}
-			}
-
-			Logger::log(
-				"ID ".$queue["id"].": ".$funcname.": ".sprintf(
-					"DB: %s/%s, Cache: %s/%s, Net: %s, I/O: %s, Other: %s, Total: %s".$o,
-					number_format($a->performance["database"] - $a->performance["database_write"], 2),
-					number_format($a->performance["database_write"], 2),
-					number_format($a->performance["cache"], 2),
-					number_format($a->performance["cache_write"], 2),
-					number_format($a->performance["network"], 2),
-					number_format($a->performance["file"], 2),
-					number_format($duration - ($a->performance["database"]
-						+ $a->performance["cache"] + $a->performance["cache_write"]
-						+ $a->performance["network"] + $a->performance["file"]), 2),
-					number_format($duration, 2)
-				),
-				Logger::DEBUG
-			);
-		}
 
 		$cooldown = Config::get("system", "worker_cooldown", 0);
 

src/Database/DBA.php

@@ -2,10 +2,11 @@
 
 namespace Friendica\Database;
 
-use Friendica\Core\Config\IConfigCache;
+use Friendica\Core\Config\Cache\IConfigCache;
 use Friendica\Core\Logger;
 use Friendica\Core\System;
 use Friendica\Util\DateTimeFormat;
+use Friendica\Util\Profiler;
 use mysqli;
 use mysqli_result;
 use mysqli_stmt;
@@ -35,6 +36,10 @@ class DBA
 	 * @var IConfigCache
 	 */
 	private static $configCache;
+	/**
+	 * @var Profiler
+	 */
+	private static $profiler;
 	private static $server_info = '';
 	private static $connection;
 	private static $driver;
@@ -50,7 +55,7 @@ class DBA
 	private static $db_name = '';
 	private static $db_charset = '';
 
-	public static function connect($configCache, $serveraddr, $user, $pass, $db, $charset = null)
+	public static function connect(IConfigCache $configCache, Profiler $profiler, $serveraddr, $user, $pass, $db, $charset = null)
 	{
 		if (!is_null(self::$connection) && self::connected()) {
 			return true;
@@ -58,6 +63,7 @@ class DBA
 
 		// We are storing these values for being able to perform a reconnect
 		self::$configCache = $configCache;
+		self::$profiler = $profiler;
 		self::$db_serveraddr = $serveraddr;
 		self::$db_user = $user;
 		self::$db_pass = $pass;
@@ -158,7 +164,7 @@ class DBA
 	public static function reconnect() {
 		self::disconnect();
 
-		$ret = self::connect(self::$configCache, self::$db_serveraddr, self::$db_user, self::$db_pass, self::$db_name, self::$db_charset);
+		$ret = self::connect(self::$configCache, self::$profiler, self::$db_serveraddr, self::$db_user, self::$db_pass, self::$db_name, self::$db_charset);
 		return $ret;
 	}
 
@@ -392,7 +398,6 @@ class DBA
 	 * @throws \Exception
 	 */
 	public static function p($sql) {
-		$a = \get_app();
 
 		$stamp1 = microtime(true);
 
@@ -582,7 +587,7 @@ class DBA
 			self::$errorno = $errorno;
 		}
 
-		$a->saveTimestamp($stamp1, 'database');
+		self::$profiler->saveTimestamp($stamp1, 'database', System::callstack());
 
 		if (self::$configCache->get('system', 'db_log')) {
 			$stamp2 = microtime(true);
@@ -611,7 +616,6 @@ class DBA
 	 * @throws \Exception
 	 */
 	public static function e($sql) {
-		$a = \get_app();
 
 		$stamp = microtime(true);
 
@@ -654,7 +658,7 @@ class DBA
 			self::$errorno = $errorno;
 		}
 
-		$a->saveTimestamp($stamp, "database_write");
+		self::$profiler->saveTimestamp($stamp, "database_write", System::callstack());
 
 		return $retval;
 	}
@@ -777,7 +781,6 @@ class DBA
 	 * @return array current row
 	 */
 	public static function fetch($stmt) {
-		$a = \get_app();
 
 		$stamp1 = microtime(true);
 
@@ -824,7 +827,7 @@ class DBA
 				}
 		}
 
-		$a->saveTimestamp($stamp1, 'database');
+		self::$profiler->saveTimestamp($stamp1, 'database', System::callstack());
 
 		return $columns;
 	}
@@ -1534,7 +1537,6 @@ class DBA
 	 * @return boolean was the close successful?
 	 */
 	public static function close($stmt) {
-		$a = \get_app();
 
 		$stamp1 = microtime(true);
 
@@ -1562,7 +1564,7 @@ class DBA
 				break;
 		}
 
-		$a->saveTimestamp($stamp1, 'database');
+		self::$profiler->saveTimestamp($stamp1, 'database', System::callstack());
 
 		return $ret;
 	}

src/Factory/ConfigFactory.php

@@ -2,51 +2,66 @@
 
 namespace Friendica\Factory;
 
+use Friendica\Core;
 use Friendica\Core\Config;
+use Friendica\Core\Config\Adapter;
+use Friendica\Core\Config\Cache;
 
 class ConfigFactory
 {
 	/**
-	 * @param Config\ConfigCacheLoader $loader The Config Cache loader (INI/config/.htconfig)
+	 * @param Cache\ConfigCacheLoader $loader The Config Cache loader (INI/config/.htconfig)
 	 *
-	 * @return Config\ConfigCache
+	 * @return Cache\ConfigCache
 	 */
-	public static function createCache(Config\ConfigCacheLoader $loader)
+	public static function createCache(Cache\ConfigCacheLoader $loader)
 	{
-		$configCache = new Config\ConfigCache();
+		$configCache = new Cache\ConfigCache();
 		$loader->loadConfigFiles($configCache);
 
 		return $configCache;
 	}
 
 	/**
-	 * @param string              $type   The adapter type
+	 * @param Cache\ConfigCache $configCache The config cache of this adapter
-	 * @param Config\IConfigCache $config The config cache of this adapter
 	 *
-	 * @return Config\IConfigAdapter
+	 * @return Config\Configuration
 	 */
-	public static function createConfig($type, Config\IConfigCache $config)
+	public static function createConfig(Cache\ConfigCache $configCache)
 	{
-		if ($type == 'preload') {
+		if ($configCache->get('system', 'config_adapter') === 'preload') {
-			return new Config\PreloadConfigAdapter($config);
+			$configAdapter = new Adapter\PreloadConfigAdapter();
 		} else {
-			return new Config\JITConfigAdapter($config);
+			$configAdapter = new Adapter\JITConfigAdapter();
 		}
+
+		$configuration = new Config\Configuration($configCache, $configAdapter);
+
+		// Set the config in the static container for legacy usage
+		Core\Config::init($configuration);
+
+		return $configuration;
 	}
 
 	/**
-	 * @param string               $type   The adapter type
+	 * @param Cache\ConfigCache  $configCache The config cache of this adapter
-	 * @param Config\IPConfigCache $config The config cache of this adapter
+	 * @param int                $uid         The UID of the current user
-	 * @param int                  $uid    The UID of the current user
 	 *
-	 * @return Config\IPConfigAdapter
+	 * @return Config\PConfiguration
 	 */
-	public static function createPConfig($type, Config\IPConfigCache $config, $uid = null)
+	public static function createPConfig(Cache\ConfigCache $configCache, $uid = null)
 	{
-		if ($type == 'preload') {
+		if ($configCache->get('system', 'config_adapter') === 'preload') {
-			return new Config\PreloadPConfigAdapter($config, $uid);
+			$configAdapter = new Adapter\PreloadPConfigAdapter($uid);
 		} else {
-			return new Config\JITPConfigAdapter($config);
+			$configAdapter = new Adapter\JITPConfigAdapter();
 		}
+
+		$configuration = new Config\PConfiguration($configCache, $configAdapter);
+
+		// Set the config in the static container for legacy usage
+		Core\PConfig::init($configuration);
+
+		return $configuration;
 	}
 }

src/Factory/DBFactory.php

@@ -0,0 +1,58 @@
+<?php
+
+namespace Friendica\Factory;
+
+use Friendica\Core\Config\Cache;
+use Friendica\Database;
+use Friendica\Util\Profiler;
+
+class DBFactory
+{
+	/**
+	 * Initialize the DBA connection
+	 *
+	 * @param Cache\IConfigCache $configCache The configuration cache
+	 * @param Profiler          $profiler    The profiler
+	 * @param array             $server      The $_SERVER variables
+	 *
+	 * @throws \Exception if connection went bad
+	 */
+	public static function init(Cache\IConfigCache $configCache, Profiler $profiler, array $server)
+	{
+		if (Database\DBA::connected()) {
+			return;
+		}
+
+		$db_host = $configCache->get('database', 'hostname');
+		$db_user = $configCache->get('database', 'username');
+		$db_pass = $configCache->get('database', 'password');
+		$db_data = $configCache->get('database', 'database');
+		$charset = $configCache->get('database', 'charset');
+
+		// Use environment variables for mysql if they are set beforehand
+		if (!empty($server['MYSQL_HOST'])
+			&& !empty($server['MYSQL_USERNAME'] || !empty($server['MYSQL_USER']))
+			&& $server['MYSQL_PASSWORD'] !== false
+			&& !empty($server['MYSQL_DATABASE']))
+		{
+			$db_host = $server['MYSQL_HOST'];
+			if (!empty($server['MYSQL_PORT'])) {
+				$db_host .= ':' . $server['MYSQL_PORT'];
+			}
+			if (!empty($server['MYSQL_USERNAME'])) {
+				$db_user = $server['MYSQL_USERNAME'];
+			} else {
+				$db_user = $server['MYSQL_USER'];
+			}
+			$db_pass = (string) $server['MYSQL_PASSWORD'];
+			$db_data = $server['MYSQL_DATABASE'];
+		}
+
+		if (Database\DBA::connect($configCache, $profiler, $db_host, $db_user, $db_pass, $db_data, $charset)) {
+			// Loads DB_UPDATE_VERSION constant
+			Database\DBStructure::definition($configCache->get('system', 'basepath'), false);
+		}
+
+		unset($db_host, $db_user, $db_pass, $db_data, $charset);
+	}
+}

src/Factory/DependencyFactory.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace Friendica\Factory;
+
+use Friendica\App;
+use Friendica\Core\Config\Cache;
+use Friendica\Factory;
+use Friendica\Util\BasePath;
+
+class DependencyFactory
+{
+	/**
+	 * Setting all default-dependencies of a friendica execution
+	 *
+	 * @param string $channel   The channel of this execution
+	 * @param string $directory The base directory
+	 * @param bool   $isBackend True, if it's a backend execution, otherwise false (Default true)
+	 *
+	 * @return App The application
+	 *
+	 * @throws \Exception
+	 */
+	public static function setUp($channel, $directory, $isBackend = true)
+	{
+		$basedir = BasePath::create($directory, $_SERVER);
+		$configLoader = new Cache\ConfigCacheLoader($basedir);
+		$configCache = Factory\ConfigFactory::createCache($configLoader);
+		$profiler = Factory\ProfilerFactory::create($configCache);
+		Factory\DBFactory::init($configCache, $profiler, $_SERVER);
+		$config = Factory\ConfigFactory::createConfig($configCache);
+		// needed to call PConfig::init()
+		Factory\ConfigFactory::createPConfig($configCache);
+		$logger = Factory\LoggerFactory::create($channel, $config);
+
+		return new App($config, $logger, $profiler, $isBackend);
+	}
+}

src/Factory/LoggerFactory.php

@@ -2,10 +2,12 @@
 
 namespace Friendica\Factory;
 
-use Friendica\Core\Config\ConfigCache;
+use Friendica\Core\Config\Configuration;
+use Friendica\Core\Logger;
 use Friendica\Network\HTTPException\InternalServerErrorException;
 use Friendica\Util\Logger\FriendicaDevelopHandler;
 use Friendica\Util\Logger\FriendicaIntrospectionProcessor;
+use Friendica\Util\Profiler;
 use Monolog;
 use Psr\Log\LoggerInterface;
 use Psr\Log\LogLevel;
@@ -20,29 +22,32 @@ class LoggerFactory
 	/**
 	 * Creates a new PSR-3 compliant logger instances
 	 *
-	 * @param string      $channel The channel of the logger instance
+	 * @param string        $channel The channel of the logger instance
-	 * @param ConfigCache $config  The config
+	 * @param Configuration $config  The config
 	 *
 	 * @return LoggerInterface The PSR-3 compliant logger instance
 	 */
-	public static function create($channel, ConfigCache $config = null)
+	public static function create($channel, Configuration $config)
 	{
 		$logger = new Monolog\Logger($channel);
 		$logger->pushProcessor(new Monolog\Processor\PsrLogMessageProcessor());
 		$logger->pushProcessor(new Monolog\Processor\ProcessIdProcessor());
 		$logger->pushProcessor(new Monolog\Processor\UidProcessor());
-		$logger->pushProcessor(new FriendicaIntrospectionProcessor(LogLevel::DEBUG, ['Friendica\\Core\\Logger']));
+		$logger->pushProcessor(new FriendicaIntrospectionProcessor(LogLevel::DEBUG, [Logger::class, Profiler::class]));
 
-		if (isset($config)) {
+		$debugging = $config->get('system', 'debugging');
-			$debugging = $config->get('system', 'debugging');
+		$stream    = $config->get('system', 'logfile');
-			$stream = $config->get('system', 'logfile');
+		$level     = $config->get('system', 'loglevel');
-			$level = $config->get('system', 'loglevel');
 
-			if ($debugging) {
+		if ($debugging) {
-				static::addStreamHandler($logger, $stream, $level);
+			$loglevel = self::mapLegacyConfigDebugLevel((string)$level);
-			}
+			static::addStreamHandler($logger, $stream, $loglevel);
+		} else {
+			static::addVoidHandler($logger);
 		}
 
+		Logger::init($logger);
+
 		return $logger;
 	}
 
@@ -54,25 +59,71 @@ class LoggerFactory
 	 *
 	 * It should never get filled during normal usage of Friendica
 	 *
-	 * @param string $channel      The channel of the logger instance
+	 * @param string        $channel The channel of the logger instance
-	 * @param string $developerIp  The IP of the developer who wants to use the logger
+	 * @param Configuration $config  The config
 	 *
 	 * @return LoggerInterface The PSR-3 compliant logger instance
 	 */
-	public static function createDev($channel, $developerIp)
+	public static function createDev($channel, Configuration $config)
 	{
+		$debugging   = $config->get('system', 'debugging');
+		$stream      = $config->get('system', 'dlogfile');
+		$developerIp = $config->get('system', 'dlogip');
+
+		if (!isset($developerIp) || !$debugging) {
+			return null;
+		}
+
 		$logger = new Monolog\Logger($channel);
 		$logger->pushProcessor(new Monolog\Processor\PsrLogMessageProcessor());
 		$logger->pushProcessor(new Monolog\Processor\ProcessIdProcessor());
 		$logger->pushProcessor(new Monolog\Processor\UidProcessor());
 		$logger->pushProcessor(new FriendicaIntrospectionProcessor(LogLevel::DEBUG, ['Friendica\\Core\\Logger']));
 
-
 		$logger->pushHandler(new FriendicaDevelopHandler($developerIp));
 
+		static::addStreamHandler($logger, $stream, LogLevel::DEBUG);
+
+		Logger::setDevLogger($logger);
+
 		return $logger;
 	}
 
+	/**
+	 * Mapping a legacy level to the PSR-3 compliant levels
+	 * @see https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md#5-psrlogloglevel
+	 *
+	 * @param string $level the level to be mapped
+	 *
+	 * @return string the PSR-3 compliant level
+	 */
+	private static function mapLegacyConfigDebugLevel($level)
+	{
+		switch ($level) {
+			// legacy WARNING
+			case "0":
+				return LogLevel::ERROR;
+			// legacy INFO
+			case "1":
+				return LogLevel::WARNING;
+			// legacy TRACE
+			case "2":
+				return LogLevel::NOTICE;
+			// legacy DEBUG
+			case "3":
+				return LogLevel::INFO;
+			// legacy DATA
+			case "4":
+				return LogLevel::DEBUG;
+			// legacy ALL
+			case "5":
+				return LogLevel::DEBUG;
+			// default if nothing set
+			default:
+				return $level;
+		}
+	}
+
 	/**
 	 * Adding a handler to a given logger instance
 	 *
@@ -105,31 +156,10 @@ class LoggerFactory
 		}
 	}
 
-	/**
+	public static function addVoidHandler($logger)
-	 * This method enables the test mode of a given logger
-	 *
-	 * @param LoggerInterface $logger The logger
-	 *
-	 * @return Monolog\Handler\TestHandler the Handling for tests
-	 *
-	 * @throws InternalServerErrorException if the logger is incompatible to the logger factory
-	 */
-	public static function enableTest($logger)
 	{
 		if ($logger instanceof Monolog\Logger) {
-			// disable every handler so far
 			$logger->pushHandler(new Monolog\Handler\NullHandler());
-
-			// enable the test handler
-			$fileHandler = new Monolog\Handler\TestHandler();
-			$formatter = new Monolog\Formatter\LineFormatter("%datetime% %channel% [%level_name%]: %message% %context% %extra%\n");
-			$fileHandler->setFormatter($formatter);
-
-			$logger->pushHandler($fileHandler);
-
-			return $fileHandler;
-		} else {
-			throw new InternalServerErrorException('Logger instance incompatible for MonologFactory');
 		}
 	}
 }

src/Factory/ProfilerFactory.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace Friendica\Factory;
+
+use Friendica\Core\Config\Cache\IConfigCache;
+use Friendica\Util\Profiler;
+
+class ProfilerFactory
+{
+	/**
+	 * Creates a Profiler for the current execution
+	 *
+	 * @param IConfigCache     $configCache The configuration cache
+	 *
+	 * @return Profiler
+	 */
+	public static function create(IConfigCache $configCache)
+	{
+		$enabled = $configCache->get('system', 'profiler');
+		$enabled = isset($enabled) && $enabled !== '!<unset>!';
+		$renderTime = $configCache->get('rendertime', 'callstack');
+		$renderTime = isset($renderTime) && $renderTime !== '!<unset>!';
+
+		return new Profiler($enabled, $renderTime);
+	}
+}

src/Module/Install.php

@@ -75,7 +75,7 @@ class Install extends BaseModule
 				$dbdata  = Strings::escapeTags(trim(defaults($_POST, 'dbdata', '')));
 
 				// If we cannot connect to the database, return to the previous step
-				if (!self::$installer->checkDB($a->getConfig(), $dbhost, $dbuser, $dbpass, $dbdata)) {
+				if (!self::$installer->checkDB($a->getConfigCache(), $a->getProfiler(), $dbhost, $dbuser, $dbpass, $dbdata)) {
 					self::$currentWizardStep = self::DATABASE_CONFIG;
 				}
 
@@ -92,7 +92,7 @@ class Install extends BaseModule
 				$adminmail = Strings::escapeTags(trim(defaults($_POST, 'adminmail', '')));
 
 				// If we cannot connect to the database, return to the Database config wizard
-				if (!self::$installer->checkDB($a->getConfig(), $dbhost, $dbuser, $dbpass, $dbdata)) {
+				if (!self::$installer->checkDB($a->getConfigCache(), $a->getProfiler(), $dbhost, $dbuser, $dbpass, $dbdata)) {
 					self::$currentWizardStep = self::DATABASE_CONFIG;
 					return;
 				}

src/Object/Image.php

@@ -5,6 +5,7 @@
  */
 namespace Friendica\Object;
 
+use Exception;
 use Friendica\App;
 use Friendica\Core\Cache;
 use Friendica\Core\Config;
@@ -14,7 +15,6 @@ use Friendica\Core\System;
 use Friendica\Database\DBA;
 use Friendica\Model\Photo;
 use Friendica\Util\Network;
-use Exception;
 use Imagick;
 use ImagickPixel;
 
@@ -656,7 +656,7 @@ class Image
 
 		$stamp1 = microtime(true);
 		file_put_contents($path, $string);
-		$a->saveTimestamp($stamp1, "file");
+		$a->getProfiler()->saveTimestamp($stamp1, "file", System::callstack());
 	}
 
 	/**
@@ -802,7 +802,7 @@ class Image
 					$a = \get_app();
 					$stamp1 = microtime(true);
 					file_put_contents($tempfile, $img_str);
-					$a->saveTimestamp($stamp1, "file");
+					$a->getProfiler()->saveTimestamp($stamp1, "file", System::callstack());
 
 					$data = getimagesize($tempfile);
 					unlink($tempfile);
@@ -910,7 +910,7 @@ class Image
 
 			$stamp1 = microtime(true);
 			$imagedata = @file_get_contents($url);
-			$a->saveTimestamp($stamp1, "file");
+			$a->getProfiler()->saveTimestamp($stamp1, "file", System::callstack());
 		}
 
 		$maximagesize = Config::get('system', 'maximagesize');
@@ -924,7 +924,7 @@ class Image
 
 		$stamp1 = microtime(true);
 		file_put_contents($tempfile, $imagedata);
-		$a->saveTimestamp($stamp1, "file");
+		$a->getProfiler()->saveTimestamp($stamp1, "file", System::callstack());
 
 		$data = getimagesize($tempfile);
 

src/Util/Network.php

@@ -4,13 +4,13 @@
  */
 namespace Friendica\Util;
 
+use DOMDocument;
+use DomXPath;
+use Friendica\Core\Config;
 use Friendica\Core\Hook;
 use Friendica\Core\Logger;
 use Friendica\Core\System;
-use Friendica\Core\Config;
 use Friendica\Network\CurlResult;
-use DOMDocument;
-use DomXPath;
 
 class Network
 {
@@ -232,7 +232,7 @@ class Network
 
 		@curl_close($ch);
 
-		$a->saveTimestamp($stamp1, 'network');
+		$a->getProfiler()->saveTimestamp($stamp1, 'network', System::callstack());
 
 		return $curlResponse;
 	}
@@ -334,7 +334,7 @@ class Network
 
 		curl_close($ch);
 
-		$a->saveTimestamp($stamp1, 'network');
+		$a->getProfiler()->saveTimestamp($stamp1, 'network', System::callstack());
 
 		Logger::log('post_url: end ' . $url, Logger::DATA);
 
@@ -641,7 +641,7 @@ class Network
 		$http_code = $curl_info['http_code'];
 		curl_close($ch);
 
-		$a->saveTimestamp($stamp1, "network");
+		$a->getProfiler()->saveTimestamp($stamp1, "network", System::callstack());
 
 		if ($http_code == 0) {
 			return $url;
@@ -683,7 +683,7 @@ class Network
 		$body = curl_exec($ch);
 		curl_close($ch);
 
-		$a->saveTimestamp($stamp1, "network");
+		$a->getProfiler()->saveTimestamp($stamp1, "network", System::callstack());
 
 		if (trim($body) == "") {
 			return $url;

src/Util/Profiler.php

@@ -0,0 +1,239 @@
+<?php
+
+namespace Friendica\Util;
+
+use Psr\Container\ContainerExceptionInterface;
+use Psr\Container\ContainerInterface;
+use Psr\Container\NotFoundExceptionInterface;
+use Psr\Log\LoggerInterface;
+
+/**
+ * A class to store profiling data
+ * It can handle different logging data for specific functions or global performance measures
+ *
+ * It stores the data as log entries (@see LoggerInterface )
+ */
+class Profiler implements ContainerInterface
+{
+	/**
+	 * @var array The global performance array
+	 */
+	private $performance;
+	/**
+	 * @var array The function specific callstack
+	 */
+	private $callstack;
+	/**
+	 * @var bool True, if the Profiler is enabled
+	 */
+	private $enabled;
+	/**
+	 * @var bool True, if the Profiler should measure the whole rendertime including functions
+	 */
+	private $rendertime;
+
+	/**
+	 * @param bool $enabled           True, if the Profiler is enabled
+	 * @param bool $renderTime        True, if the Profiler should measure the whole rendertime including functions
+	 */
+	public function __construct($enabled = false, $renderTime = false)
+	{
+		$this->enabled = $enabled;
+		$this->rendertime = $renderTime;
+		$this->reset();
+	}
+
+	/**
+	 * Saves a timestamp for a value - f.e. a call
+	 * Necessary for profiling Friendica
+	 *
+	 * @param int $timestamp the Timestamp
+	 * @param string $value A value to profile
+	 * @param string $callstack The callstack of the current profiling data
+	 */
+	public function saveTimestamp($timestamp, $value, $callstack = '')
+	{
+		if (!$this->enabled) {
+			return;
+		}
+
+		$duration = (float) (microtime(true) - $timestamp);
+
+		if (!isset($this->performance[$value])) {
+			// Prevent ugly E_NOTICE
+			$this->performance[$value] = 0;
+		}
+
+		$this->performance[$value] += (float) $duration;
+		$this->performance['marktime'] += (float) $duration;
+
+		if (!isset($this->callstack[$value][$callstack])) {
+			// Prevent ugly E_NOTICE
+			$this->callstack[$value][$callstack] = 0;
+		}
+
+		$this->callstack[$value][$callstack] += (float) $duration;
+	}
+
+	/**
+	 * Resets the performance and callstack profiling
+	 */
+	public function reset()
+	{
+		$this->resetPerformance();
+		$this->resetCallstack();
+	}
+
+	/**
+	 * Resets the performance profiling data
+	 */
+	public function resetPerformance()
+	{
+		$this->performance = [];
+		$this->performance['start'] = microtime(true);
+		$this->performance['database'] = 0;
+		$this->performance['database_write'] = 0;
+		$this->performance['cache'] = 0;
+		$this->performance['cache_write'] = 0;
+		$this->performance['network'] = 0;
+		$this->performance['file'] = 0;
+		$this->performance['rendering'] = 0;
+		$this->performance['parser'] = 0;
+		$this->performance['marktime'] = 0;
+		$this->performance['marktime'] = microtime(true);
+	}
+
+	/**
+	 * Resets the callstack profiling data
+	 */
+	public function resetCallstack()
+	{
+		$this->callstack = [];
+		$this->callstack['database'] = [];
+		$this->callstack['database_write'] = [];
+		$this->callstack['cache'] = [];
+		$this->callstack['cache_write'] = [];
+		$this->callstack['network'] = [];
+		$this->callstack['file'] = [];
+		$this->callstack['rendering'] = [];
+		$this->callstack['parser'] = [];
+	}
+
+	/**
+	 * Save the current profiling data to a log entry
+	 *
+	 * @param LoggerInterface $logger The logger to save the current log
+	 * @param string          $message Additional message for the log
+	 */
+	public function saveLog(LoggerInterface $logger, $message = '')
+	{
+		// Write down the performance values into the log
+		if (!$this->enabled) {
+			return;
+		}
+		$duration = microtime(true) - $this->get('start');
+		$logger->info(
+			$message,
+			[
+				'action' => 'profiling',
+				'database_read' => round($this->get('database') - $this->get('database_write'), 3),
+				'database_write' => round($this->get('database_write'), 3),
+				'cache_read' => round($this->get('cache'), 3),
+				'cache_write' => round($this->get('cache_write'), 3),
+				'network_io' => round($this->get('network'), 2),
+				'file_io' => round($this->get('file'), 2),
+				'other_io' => round($duration - ($this->get('database')
+						+ $this->get('cache') + $this->get('cache_write')
+						+ $this->get('network') + $this->get('file')), 2),
+				'total' => round($duration, 2)
+			]
+		);
+
+		if (!$this->rendertime) {
+			return;
+		}
+		
+		$o = '';
+		if (isset($this->callstack["database"])) {
+			$o .= "\nDatabase Read:\n";
+			foreach ($this->callstack["database"] as $func => $time) {
+				$time = round($time, 3);
+				if ($time > 0) {
+					$o .= $func . ": " . $time . "\n";
+				}
+			}
+		}
+		if (isset($this->callstack["database_write"])) {
+			$o .= "\nDatabase Write:\n";
+			foreach ($this->callstack["database_write"] as $func => $time) {
+				$time = round($time, 3);
+				if ($time > 0) {
+					$o .= $func . ": " . $time . "\n";
+				}
+			}
+		}
+		if (isset($this->callstack["cache"])) {
+			$o .= "\nCache Read:\n";
+			foreach ($this->callstack["cache"] as $func => $time) {
+				$time = round($time, 3);
+				if ($time > 0) {
+					$o .= $func . ": " . $time . "\n";
+				}
+			}
+		}
+		if (isset($this->callstack["cache_write"])) {
+			$o .= "\nCache Write:\n";
+			foreach ($this->callstack["cache_write"] as $func => $time) {
+				$time = round($time, 3);
+				if ($time > 0) {
+					$o .= $func . ": " . $time . "\n";
+				}
+			}
+		}
+		if (isset($this->callstack["network"])) {
+			$o .= "\nNetwork:\n";
+			foreach ($this->callstack["network"] as $func => $time) {
+				$time = round($time, 3);
+				if ($time > 0) {
+					$o .= $func . ": " . $time . "\n";
+				}
+			}
+		}
+		$logger->info($message . ": " . $o, ['action' => 'profiling']);
+	}
+
+	/**
+	 * Finds an entry of the container by its identifier and returns it.
+	 *
+	 * @param string $id Identifier of the entry to look for.
+	 *
+	 * @throws NotFoundExceptionInterface  No entry was found for **this** identifier.
+	 * @throws ContainerExceptionInterface Error while retrieving the entry.
+	 *
+	 * @return int Entry.
+	 */
+	public function get($id)
+	{
+		if (!$this->has($id)) {
+			return 0;
+		} else {
+			return $this->performance[$id];
+		}
+	}
+
+	/**
+	 * Returns true if the container can return an entry for the given identifier.
+	 * Returns false otherwise.
+	 *
+	 * `has($id)` returning true does not mean that `get($id)` will not throw an exception.
+	 * It does however mean that `get($id)` will not throw a `NotFoundExceptionInterface`.
+	 *
+	 * @param string $id Identifier of the entry to look for.
+	 *
+	 * @return bool
+	 */
+	public function has($id)
+	{
+		return isset($this->performance[$id]);
+	}
+}

tests/DatabaseTest.php

@@ -5,10 +5,11 @@
 
 namespace Friendica\Test;
 
-use Friendica\Core\Config;
+use Friendica\Core\Config\Cache;
 use Friendica\Database\DBA;
 use Friendica\Factory;
 use Friendica\Util\BasePath;
+use Friendica\Util\Profiler;
 use PHPUnit\DbUnit\DataSet\YamlDataSet;
 use PHPUnit\DbUnit\TestCaseTrait;
 use PHPUnit_Extensions_Database_DB_IDatabaseConnection;
@@ -40,11 +41,14 @@ abstract class DatabaseTest extends MockedTest
 		}
 
 		$basedir = BasePath::create(dirname(__DIR__));
-		$configLoader = new Config\ConfigCacheLoader($basedir);
+		$configLoader = new Cache\ConfigCacheLoader($basedir);
 		$config = Factory\ConfigFactory::createCache($configLoader);
 
+		$profiler = \Mockery::mock(Profiler::class);
+
 		DBA::connect(
 			$config,
+			$profiler,
 			getenv('MYSQL_HOST'),
 			getenv('MYSQL_USERNAME'),
 			getenv('MYSQL_PASSWORD'),

tests/Util/AppMockTrait.php

@@ -5,8 +5,8 @@ namespace Friendica\Test\Util;
 use Friendica\App;
 use Friendica\BaseObject;
 use Friendica\Core\Config;
-use Friendica\Core\Config\ConfigCache;
 use Friendica\Render\FriendicaSmartyEngine;
+use Friendica\Util\Profiler;
 use Mockery\MockInterface;
 use org\bovigo\vfs\vfsStreamDirectory;
 
@@ -21,74 +21,83 @@ trait AppMockTrait
 	protected $app;
 
 	/**
-	 * @var MockInterface|ConfigCache The mocked Config Cache
+	 * @var MockInterface|Config\Configuration The mocked Config Cache
 	 */
-	protected $configCache;
+	protected $configMock;
+
+	/**
+	 * @var MockInterface|Profiler The mocked profiler
+	 */
+	protected $profilerMock;
 
 	/**
 	 * Mock the App
 	 *
 	 * @param vfsStreamDirectory $root The root directory
-	 * @param MockInterface|ConfigCache $config The config cache
 	 */
-	public function mockApp($root, $config)
+	public function mockApp($root)
 	{
-		$this->configCache = $config;
+		$this->configMock = \Mockery::mock(Config\Cache\IConfigCache::class);
+		$configAdapterMock = \Mockery::mock(Config\Adapter\IConfigAdapter::class);
+		// Disable the adapter
+		$configAdapterMock->shouldReceive('isConnected')->andReturn(false);
+
+		$config = new Config\Configuration($this->configMock, $configAdapterMock);
+		// Initialize empty Config
+		Config::init($config);
+
 		// Mocking App and most used functions
 		$this->app = \Mockery::mock(App::class);
 		$this->app
 			->shouldReceive('getBasePath')
 			->andReturn($root->url());
 
-		$config
+		$this->configMock
+			->shouldReceive('has')
+			->andReturn(true);
+		$this->configMock
 			->shouldReceive('get')
 			->with('database', 'hostname')
 			->andReturn(getenv('MYSQL_HOST'));
-		$config
+		$this->configMock
 			->shouldReceive('get')
 			->with('database', 'username')
 			->andReturn(getenv('MYSQL_USERNAME'));
-		$config
+		$this->configMock
 			->shouldReceive('get')
 			->with('database', 'password')
 			->andReturn(getenv('MYSQL_PASSWORD'));
-		$config
+		$this->configMock
 			->shouldReceive('get')
 			->with('database', 'database')
 			->andReturn(getenv('MYSQL_DATABASE'));
-		$config
+		$this->configMock
 			->shouldReceive('get')
 			->with('config', 'hostname')
 			->andReturn('localhost');
-		$config
+		$this->configMock
 			->shouldReceive('get')
-			->with('system', 'theme', NULL)
+			->with('system', 'theme')
 			->andReturn('system_theme');
 
-		$this->app
+		$this->profilerMock = \Mockery::mock(Profiler::class);
-			->shouldReceive('getConfig')
+		$this->profilerMock->shouldReceive('saveTimestamp');
-			->andReturn($config);
 
+		$this->app
+			->shouldReceive('getConfigCache')
+			->andReturn($this->configMock);
 		$this->app
 			->shouldReceive('getTemplateEngine')
 			->andReturn(new FriendicaSmartyEngine());
 		$this->app
 			->shouldReceive('getCurrentTheme')
 			->andReturn('Smarty3');
-		$this->app
-			->shouldReceive('saveTimestamp')
-			->andReturn(true);
 		$this->app
 			->shouldReceive('getBaseUrl')
 			->andReturn('http://friendica.local');
-
+		$this->app
-		// Initialize empty Config
+			->shouldReceive('getProfiler')
-		Config::init($config);
+			->andReturn($this->profilerMock);
-		$configAdapter = \Mockery::mock('Friendica\Core\Config\IConfigAdapter');
-		$configAdapter
-			->shouldReceive('isConnected')
-			->andReturn(false);
-		Config::setAdapter($configAdapter);
 
 		BaseObject::setApp($this->app);
 	}

tests/Util/DBStructureMockTrait.php

@@ -2,6 +2,7 @@
 
 namespace Friendica\Test\Util;
 
+use Friendica\Database\DBStructure;
 use Mockery\MockInterface;
 
 /**
@@ -16,6 +17,7 @@ trait DBStructureMockTrait
 
 	/**
 	 * Mocking DBStructure::update()
+	 * @see DBStructure::update();
 	 *
 	 * @param array $args The arguments for the update call
 	 * @param bool $return True, if the connect was successful, otherwise false

tests/include/ApiTest.php

@@ -7,6 +7,7 @@ namespace Friendica\Test;
 
 use Friendica\App;
 use Friendica\Core\Config;
+use Friendica\Core\Config\Cache;
 use Friendica\Core\PConfig;
 use Friendica\Core\Protocol;
 use Friendica\Core\System;
@@ -36,11 +37,14 @@ class ApiTest extends DatabaseTest
 	public function setUp()
 	{
 		$basedir = BasePath::create(dirname(__DIR__) . '/../');
-		$configLoader = new Config\ConfigCacheLoader($basedir);
+		$configLoader = new Cache\ConfigCacheLoader($basedir);
-		$config = Factory\ConfigFactory::createCache($configLoader);
+		$configCache = Factory\ConfigFactory::createCache($configLoader);
+		$profiler = Factory\ProfilerFactory::create($configCache);
+		Factory\DBFactory::init($configCache, $profiler, $_SERVER);
+		$config = Factory\ConfigFactory::createConfig($configCache);
+		Factory\ConfigFactory::createPConfig($configCache);
 		$logger = Factory\LoggerFactory::create('test', $config);
-		$this->app = new App($config, $logger, false);
+		$this->app = new App($config, $logger, $profiler, false);
-		$this->logOutput = FActory\LoggerFactory::enableTest($this->app->getLogger());
 
 		parent::setUp();
 

tests/src/App/ModeTest.php

@@ -90,19 +90,14 @@ class ModeTest extends MockedTest
 		$this->mockConnected(true, 1);
 		$this->mockFetchFirst('SHOW TABLES LIKE \'config\'', true, 1);
 
-		$config = \Mockery::mock('Friendica\Core\Config\ConfigCache');
+		$config = \Mockery::mock(Config\Configuration::class);
 		$config
 			->shouldReceive('get')
-			->with('system', 'maintenance', null)
+			->with('system', 'maintenance', null, false)
 			->andReturn(true)
 			->once();
 		// Initialize empty Config
 		Config::init($config);
-		$configAdapter = \Mockery::mock('Friendica\Core\Config\IConfigAdapter');
-		$configAdapter
-			->shouldReceive('isConnected')
-			->andReturn(false);
-		Config::setAdapter($configAdapter);
 
 		$mode = new Mode($this->root->url());
 		$mode->determine();
@@ -123,19 +118,14 @@ class ModeTest extends MockedTest
 		$this->mockConnected(true, 1);
 		$this->mockFetchFirst('SHOW TABLES LIKE \'config\'', true, 1);
 
-		$config = \Mockery::mock('Friendica\Core\Config\ConfigCache');
+		$config = \Mockery::mock(Config\Configuration::class);
 		$config
 			->shouldReceive('get')
-			->with('system', 'maintenance', null)
+			->with('system', 'maintenance', null, false)
 			->andReturn(false)
 			->once();
 		// Initialize empty Config
 		Config::init($config);
-		$configAdapter = \Mockery::mock('Friendica\Core\Config\IConfigAdapter');
-		$configAdapter
-			->shouldReceive('isConnected')
-			->andReturn(false);
-		Config::setAdapter($configAdapter);
 
 		$mode = new Mode($this->root->url());
 		$mode->determine();

tests/src/BaseObjectTest.php

@@ -31,8 +31,7 @@ class BaseObjectTest extends TestCase
 	{
 		$baseObject = new BaseObject();
 		$this->setUpVfsDir();
-		$configMock = \Mockery::mock('Friendica\Core\Config\ConfigCache');
+		$this->mockApp($this->root);
-		$this->mockApp($this->root, $configMock);
 
 		$this->assertNull($baseObject->setApp($this->app));
 		$this->assertEquals($this->app, $baseObject->getApp());

tests/src/Core/Cache/CacheTest.php

@@ -67,8 +67,7 @@ abstract class CacheTest extends MockedTest
 	protected function setUp()
 	{
 		$this->setUpVfsDir();
-		$configMock = \Mockery::mock('Friendica\Core\Config\ConfigCache');
+		$this->mockApp($this->root);
-		$this->mockApp($this->root, $configMock);
 		$this->app
 			->shouldReceive('getHostname')
 			->andReturn('friendica.local');

tests/src/Core/Cache/MemcacheCacheDriverTest.php

@@ -12,14 +12,14 @@ class MemcacheCacheDriverTest extends MemoryCacheTest
 {
 	protected function getInstance()
 	{
-		$this->configCache
+		$this->configMock
 			->shouldReceive('get')
-			->with('system', 'memcache_host', NULL)
+			->with('system', 'memcache_host')
 			->andReturn('localhost');
 
-		$this->configCache
+		$this->configMock
 			->shouldReceive('get')
-			->with('system', 'memcache_port', NULL)
+			->with('system', 'memcache_port')
 			->andReturn(11211);
 
 		$this->cache = CacheDriverFactory::create('memcache');

tests/src/Core/Cache/MemcachedCacheDriverTest.php

@@ -12,9 +12,9 @@ class MemcachedCacheDriverTest extends MemoryCacheTest
 {
 	protected function getInstance()
 	{
-		$this->configCache
+		$this->configMock
 			->shouldReceive('get')
-			->with('system', 'memcached_hosts', NULL)
+			->with('system', 'memcached_hosts')
 			->andReturn([0 => 'localhost, 11211']);
 
 		$this->cache = CacheDriverFactory::create('memcached');

tests/src/Core/Cache/RedisCacheDriverTest.php

@@ -12,14 +12,14 @@ class RedisCacheDriverTest extends MemoryCacheTest
 {
 	protected function getInstance()
 	{
-		$this->configCache
+		$this->configMock
 			->shouldReceive('get')
-			->with('system', 'redis_host', NULL)
+			->with('system', 'redis_host')
 			->andReturn('localhost');
 
-		$this->configCache
+		$this->configMock
 			->shouldReceive('get')
-			->with('system', 'redis_port', NULL)
+			->with('system', 'redis_port')
 			->andReturn(null);
 
 		$this->cache = CacheDriverFactory::create('redis');

tests/src/Core/Config/Cache/ConfigCacheLoaderTest.php

@@ -1,9 +1,9 @@
 <?php
 
-namespace Friendica\Test\Core\Config;
+namespace Friendica\Test\Core\Config\Cache;
 
-use Friendica\Core\Config\ConfigCache;
+use Friendica\Core\Config\Cache\ConfigCache;
-use Friendica\Core\Config\ConfigCacheLoader;
+use Friendica\Core\Config\Cache\ConfigCacheLoader;
 use Friendica\Test\MockedTest;
 use Friendica\Test\Util\VFSTrait;
 use org\bovigo\vfs\vfsStream;
@@ -59,6 +59,7 @@ class ConfigCacheLoaderTest extends MockedTest
 		$this->delConfigFile('local.config.php');
 
 		$file = dirname(__DIR__) . DIRECTORY_SEPARATOR .
+			'..' . DIRECTORY_SEPARATOR .
 			'..' . DIRECTORY_SEPARATOR .
 			'..' . DIRECTORY_SEPARATOR .
 			'datasets' . DIRECTORY_SEPARATOR .
@@ -91,6 +92,7 @@ class ConfigCacheLoaderTest extends MockedTest
 		$this->delConfigFile('local.config.php');
 
 		$file = dirname(__DIR__) . DIRECTORY_SEPARATOR .
+			'..' . DIRECTORY_SEPARATOR .
 			'..' . DIRECTORY_SEPARATOR .
 			'..' . DIRECTORY_SEPARATOR .
 			'datasets' . DIRECTORY_SEPARATOR .
@@ -122,6 +124,7 @@ class ConfigCacheLoaderTest extends MockedTest
 		$this->delConfigFile('local.config.php');
 
 		$file = dirname(__DIR__) . DIRECTORY_SEPARATOR .
+			'..' . DIRECTORY_SEPARATOR .
 			'..' . DIRECTORY_SEPARATOR .
 			'..' . DIRECTORY_SEPARATOR .
 			'datasets' . DIRECTORY_SEPARATOR .
@@ -160,6 +163,7 @@ class ConfigCacheLoaderTest extends MockedTest
 		vfsStream::create($structure, $this->root);
 
 		$file = dirname(__DIR__) . DIRECTORY_SEPARATOR .
+			'..' . DIRECTORY_SEPARATOR .
 			'..' . DIRECTORY_SEPARATOR .
 			'..' . DIRECTORY_SEPARATOR .
 			'datasets' . DIRECTORY_SEPARATOR .

tests/src/Core/Config/Cache/ConfigCacheTest.php

@@ -1,8 +1,8 @@
 <?php
 
-namespace Friendica\Test\Core\Config;
+namespace Friendica\Test\Core\Config\Cache;
 
-use Friendica\Core\Config\ConfigCache;
+use Friendica\Core\Config\Cache\ConfigCache;
 use Friendica\Test\MockedTest;
 
 class ConfigCacheTest extends MockedTest
@@ -48,7 +48,7 @@ class ConfigCacheTest extends MockedTest
 	public function testLoadConfigArray($data)
 	{
 		$configCache = new ConfigCache();
-		$configCache->loadConfigArray($data);
+		$configCache->load($data);
 
 		$this->assertConfigValues($data, $configCache);
 	}
@@ -67,18 +67,38 @@ class ConfigCacheTest extends MockedTest
 		];
 
 		$configCache = new ConfigCache();
-		$configCache->loadConfigArray($data);
+		$configCache->load($data);
-		$configCache->loadConfigArray($override);
+		$configCache->load($override);
 
 		$this->assertConfigValues($data, $configCache);
 
 		// override the value
-		$configCache->loadConfigArray($override, true);
+		$configCache->load($override, true);
 
 		$this->assertEquals($override['system']['test'], $configCache->get('system', 'test'));
 		$this->assertEquals($override['system']['boolTrue'], $configCache->get('system', 'boolTrue'));
 	}
 
+	/**
+	 * Test the loadConfigArray() method with wrong/empty datasets
+	 */
+	public function testLoadConfigArrayWrong()
+	{
+		$configCache = new ConfigCache();
+
+		// empty dataset
+		$configCache->load([]);
+		$this->assertEmpty($configCache->getAll());
+
+		// wrong dataset
+		$configCache->load(['system' => 'not_array']);
+		$this->assertEmpty($configCache->getAll());
+
+		// incomplete dataset (key is integer ID of the array)
+		$configCache->load(['system' => ['value']]);
+		$this->assertEquals('value', $configCache->get('system', 0));
+	}
+
 	/**
 	 * Test the getAll() method
 	 * @dataProvider dataTests
@@ -86,14 +106,12 @@ class ConfigCacheTest extends MockedTest
 	public function testGetAll($data)
 	{
 		$configCache = new ConfigCache();
-		$configCache->loadConfigArray($data);
+		$configCache->load($data);
 
 		$all = $configCache->getAll();
 
 		$this->assertContains($data['system'], $all);
-
+		$this->assertContains($data['config'], $all);
-		// config values are stored directly in the array base
-		$this->assertEquals($data['config']['a'], $all['a']);
 	}
 
 	/**
@@ -113,6 +131,54 @@ class ConfigCacheTest extends MockedTest
 		$this->assertConfigValues($data, $configCache);
 	}
 
+	/**
+	 * Test the get() method without a value
+	 */
+	public function testGetEmpty()
+	{
+		$configCache = new ConfigCache();
+
+		$this->assertEquals('!<unset>!', $configCache->get('something', 'value'));
+	}
+
+	/**
+	 * Test the has() method
+	 */
+	public function testHas()
+	{
+		$configCache = new ConfigCache();
+
+		$this->assertFalse($configCache->has('system', 'test'));
+		$this->assertFalse($configCache->has('system'));
+
+		$configCache->set('system', 'test', 'it');
+		$this->assertTrue($configCache->has('system', 'test'));
+		$this->assertTrue($configCache->has('system'));
+	}
+
+	/**
+	 * Test the get() method with a category
+	 */
+	public function testGetCat()
+	{
+		$configCache = new ConfigCache([
+			'system' => [
+				'key1' => 'value1',
+				'key2' => 'value2',
+			],
+			'config' => [
+				'key3' => 'value3',
+			],
+		]);
+
+		$this->assertTrue($configCache->has('system'));
+
+		$this->assertEquals([
+			'key1' => 'value1',
+			'key2' => 'value2',
+		], $configCache->get('system'));
+	}
+
 	/**
 	 * Test the delete() method
 	 * @dataProvider dataTests
@@ -149,6 +215,32 @@ class ConfigCacheTest extends MockedTest
 	}
 
 
+	/**
+	 * Test the getP() method with a category
+	 */
+	public function testGetPCat()
+	{
+		$configCache = new ConfigCache();
+		$uid = 345;
+
+		$configCache->loadP($uid, [
+			'system' => [
+				'key1' => 'value1',
+				'key2' => 'value2',
+			],
+			'config' => [
+				'key3' => 'value3',
+			],
+		]);
+
+		$this->assertTrue($configCache->hasP($uid,'system'));
+
+		$this->assertEquals([
+			'key1' => 'value1',
+			'key2' => 'value2',
+		], $configCache->get($uid, 'system'));
+	}
+
 	/**
 	 * Test the deleteP() method
 	 * @dataProvider dataTests
@@ -172,4 +264,20 @@ class ConfigCacheTest extends MockedTest
 
 		$this->assertEmpty($configCache->getAll());
 	}
+
+	/**
+	 * Test the hasP() method
+	 */
+	public function testHasP()
+	{
+		$configCache = new ConfigCache();
+		$uid = 345;
+
+		$this->assertFalse($configCache->hasP($uid, 'system', 'test'));
+		$this->assertFalse($configCache->hasP($uid, 'system'));
+
+		$configCache->setP($uid, 'system', 'test', 'it');
+		$this->assertTrue($configCache->hasP($uid, 'system', 'test'));
+		$this->assertTrue($configCache->hasP($uid, 'system'));
+	}
 }

tests/src/Core/Config/ConfigurationTest.php

@@ -0,0 +1,276 @@
+<?php
+
+namespace Friendica\Test\Core\Config;
+
+use Friendica\Core\Config\Adapter\IConfigAdapter;
+use Friendica\Core\Config\Cache\ConfigCache;
+use Friendica\Core\Config\Cache\IConfigCache;
+use Friendica\Core\Config\Configuration;
+use Friendica\Test\MockedTest;
+
+class ConfigurationTest extends MockedTest
+{
+	public function dataTests()
+	{
+		return [
+			'string'       => ['data' => 'it'],
+			'boolTrue'     => ['data' => true],
+			'boolFalse'    => ['data' => false],
+			'integer'      => ['data' => 235],
+			'decimal'      => ['data' => 2.456],
+			'array'        => ['data' => ['1', 2, '3', true, false]],
+			'boolIntTrue'  => ['data' => 1],
+			'boolIntFalse' => ['Data' => 0],
+		];
+	}
+
+	/**
+	 * Test the configuration initialization
+	 */
+	public function testSetUp()
+	{
+		$configCache = new ConfigCache();
+		$configAdapter = \Mockery::mock(IConfigAdapter::class);
+		$configAdapter->shouldReceive('isConnected')->andReturn(false)->once();
+
+		$configuration = new Configuration($configCache, $configAdapter);
+
+		$this->assertInstanceOf(IConfigCache::class, $configuration->getCache());
+	}
+
+	/**
+	 * Test the configuration load() method
+	 */
+	public function testCacheLoad()
+	{
+		$configCache = new ConfigCache();
+		$configAdapter = \Mockery::mock(IConfigAdapter::class);
+		$configAdapter->shouldReceive('isConnected')->andReturn(true)->times(3);
+		// constructor loading
+		$configAdapter->shouldReceive('load')->andReturn([])->once();
+		// expected loading
+		$configAdapter->shouldReceive('load')->andReturn(['testing' => ['test' => 'it']])->once();
+		$configAdapter->shouldReceive('isLoaded')->with('testing', 'test')->andReturn(true)->once();
+
+		$configuration = new Configuration($configCache, $configAdapter);
+		$configuration->load('testing');
+
+		$this->assertEquals('it', $configuration->get('testing', 'test'));
+		$this->assertEquals('it', $configuration->getCache()->get('testing', 'test'));
+	}
+
+	/**
+	 * Test the configuration load() method with overwrite
+	 */
+	public function testCacheLoadDouble()
+	{
+		$configCache = new ConfigCache();
+		$configAdapter = \Mockery::mock(IConfigAdapter::class);
+		$configAdapter->shouldReceive('isConnected')->andReturn(true)->times(5);
+		// constructor loading
+		$configAdapter->shouldReceive('load')->andReturn([])->once();
+		// expected loading
+		$configAdapter->shouldReceive('load')->andReturn(['testing' => ['test' => 'it']])->once();
+		$configAdapter->shouldReceive('isLoaded')->with('testing', 'test')->andReturn(true)->twice();
+		// expected next loading
+		$configAdapter->shouldReceive('load')->andReturn(['testing' => ['test' => 'again']])->once();
+
+		$configuration = new Configuration($configCache, $configAdapter);
+		$configuration->load('testing');
+
+		$this->assertEquals('it', $configuration->get('testing', 'test'));
+		$this->assertEquals('it', $configuration->getCache()->get('testing', 'test'));
+
+		$configuration->load('testing');
+
+		$this->assertEquals('again', $configuration->get('testing', 'test'));
+		$this->assertEquals('again', $configuration->getCache()->get('testing', 'test'));
+	}
+
+	/**
+	 * Test the configuration get() and set() methods without adapter
+	 * @dataProvider dataTests
+	 */
+	public function testSetGetWithoutDB($data)
+	{
+		$configCache = new ConfigCache();
+		$configAdapter = \Mockery::mock(IConfigAdapter::class);
+		$configAdapter->shouldReceive('isConnected')->andReturn(false)->times(3);
+
+		$configuration = new Configuration($configCache, $configAdapter);
+
+		$this->assertTrue($configuration->set('test', 'it', $data));
+
+		$this->assertEquals($data, $configuration->get('test', 'it'));
+		$this->assertEquals($data, $configuration->getCache()->get('test', 'it'));
+	}
+
+	/**
+	 * Test the configuration get() and set() methods with adapter
+	 * @dataProvider dataTests
+	 */
+	public function testSetGetWithDB($data)
+	{
+		$configCache = new ConfigCache();
+		$configAdapter = \Mockery::mock(IConfigAdapter::class);
+		$configAdapter->shouldReceive('isConnected')->andReturn(true)->times(3);
+		// constructor loading
+		$configAdapter->shouldReceive('load')->andReturn([])->once();
+		$configAdapter->shouldReceive('isLoaded')->with('test', 'it')->andReturn(true)->once();
+		$configAdapter->shouldReceive('set')->with('test', 'it', $data)->andReturn(true)->once();
+
+		$configuration = new Configuration($configCache, $configAdapter);
+
+		$this->assertTrue($configuration->set('test', 'it', $data));
+
+		$this->assertEquals($data, $configuration->get('test', 'it'));
+		$this->assertEquals($data, $configuration->getCache()->get('test', 'it'));
+	}
+
+	/**
+	 * Test the configuration get() method with wrong value and no db
+	 */
+	public function testGetWrongWithoutDB()
+	{
+		$configCache = new ConfigCache();
+		$configAdapter = \Mockery::mock(IConfigAdapter::class);
+		$configAdapter->shouldReceive('isConnected')->andReturn(false)->times(4);
+
+		$configuration = new Configuration($configCache, $configAdapter);
+
+		// without refresh
+		$this->assertNull($configuration->get('test', 'it'));
+
+		/// beware that the cache returns '!<unset>!' and not null for a non existing value
+		$this->assertEquals('!<unset>!', $configuration->getCache()->get('test', 'it'));
+
+		// with default value
+		$this->assertEquals('default', $configuration->get('test', 'it', 'default'));
+
+		// with default value and refresh
+		$this->assertEquals('default', $configuration->get('test', 'it', 'default', true));
+	}
+
+	/**
+	 * Test the configuration get() method with refresh
+	 * @dataProvider dataTests
+	 */
+	public function testGetWithRefresh($data)
+	{
+		$configCache = new ConfigCache(['test' => ['it' => 'now']]);
+		$configAdapter = \Mockery::mock(IConfigAdapter::class);
+		$configAdapter->shouldReceive('isConnected')->andReturn(true)->times(4);
+		// constructor loading
+		$configAdapter->shouldReceive('load')->andReturn([])->once();
+		$configAdapter->shouldReceive('isLoaded')->with('test', 'it')->andReturn(true)->twice();
+		$configAdapter->shouldReceive('get')->with('test', 'it')->andReturn($data)->once();
+		$configAdapter->shouldReceive('isLoaded')->with('test', 'not')->andReturn(false)->once();
+		$configAdapter->shouldReceive('get')->with('test', 'not')->andReturn('!<unset>!')->once();
+
+		$configuration = new Configuration($configCache, $configAdapter);
+
+		// without refresh
+		$this->assertEquals('now', $configuration->get('test', 'it'));
+		$this->assertEquals('now', $configuration->getCache()->get('test', 'it'));
+
+		// with refresh
+		$this->assertEquals($data, $configuration->get('test', 'it', null, true));
+		$this->assertEquals($data, $configuration->getCache()->get('test', 'it'));
+
+		// without refresh and wrong value and default
+		$this->assertEquals('default', $configuration->get('test', 'not', 'default'));
+		$this->assertEquals('!<unset>!', $configuration->getCache()->get('test', 'not'));
+	}
+
+	/**
+	 * Test the configuration get() method with different isLoaded settings
+	 * @dataProvider dataTests
+	 */
+	public function testGetWithoutLoaded($data)
+	{
+		$configCache = new ConfigCache(['test' => ['it' => 'now']]);
+		$configAdapter = \Mockery::mock(IConfigAdapter::class);
+		$configAdapter->shouldReceive('isConnected')->andReturn(true)->times(4);
+		// constructor loading
+		$configAdapter->shouldReceive('load')->andReturn([])->once();
+
+		$configAdapter->shouldReceive('isLoaded')->with('test', 'it')->andReturn(false)->once();
+		$configAdapter->shouldReceive('get')->with('test', 'it')->andReturn('!<unset>!')->once();
+
+		$configAdapter->shouldReceive('isLoaded')->with('test', 'it')->andReturn(false)->once();
+		$configAdapter->shouldReceive('get')->with('test', 'it')->andReturn($data)->once();
+
+		$configAdapter->shouldReceive('isLoaded')->with('test', 'it')->andReturn(true)->once();
+
+		$configuration = new Configuration($configCache, $configAdapter);
+
+		// first run is not loaded and no data is found in the DB
+		$this->assertEquals('now', $configuration->get('test', 'it'));
+		$this->assertEquals('now', $configuration->getCache()->get('test', 'it'));
+
+		// second run is not loaded, but now data is found in the db (overwrote cache)
+		$this->assertEquals($data, $configuration->get('test', 'it'));
+		$this->assertEquals($data, $configuration->getCache()->get('test', 'it'));
+
+		// third run is loaded and therefore cache is used
+		$this->assertEquals($data, $configuration->get('test', 'it'));
+		$this->assertEquals($data, $configuration->getCache()->get('test', 'it'));
+	}
+
+	/**
+	 * Test the configuration delete() method without adapter
+	 * @dataProvider dataTests
+	 */
+	public function testDeleteWithoutDB($data)
+	{
+		$configCache = new ConfigCache(['test' => ['it' => $data]]);
+		$configAdapter = \Mockery::mock(IConfigAdapter::class);
+		$configAdapter->shouldReceive('isConnected')->andReturn(false)->times(4);
+
+		$configuration = new Configuration($configCache, $configAdapter);
+
+		$this->assertEquals($data, $configuration->get('test', 'it'));
+		$this->assertEquals($data, $configuration->getCache()->get('test', 'it'));
+
+		$this->assertTrue($configuration->delete('test', 'it'));
+		$this->assertNull($configuration->get('test', 'it'));
+		$this->assertEquals('!<unset>!', $configuration->getCache()->get('test', 'it'));
+
+		$this->assertEmpty($configuration->getCache()->getAll());
+	}
+
+	/**
+	 * Test the configuration delete() method with adapter
+	 */
+	public function testDeleteWithDB()
+	{
+		$configCache = new ConfigCache(['test' => ['it' => 'now', 'quarter' => 'true']]);
+		$configAdapter = \Mockery::mock(IConfigAdapter::class);
+		$configAdapter->shouldReceive('isConnected')->andReturn(true)->times(6);
+		// constructor loading
+		$configAdapter->shouldReceive('load')->andReturn([])->once();
+		$configAdapter->shouldReceive('isLoaded')->with('test', 'it')->andReturn(true)->once();
+
+		$configAdapter->shouldReceive('delete')->with('test', 'it')->andReturn(false)->once();
+
+		$configAdapter->shouldReceive('delete')->with('test', 'second')->andReturn(true)->once();
+		$configAdapter->shouldReceive('delete')->with('test', 'third')->andReturn(false)->once();
+		$configAdapter->shouldReceive('delete')->with('test', 'quarter')->andReturn(true)->once();
+
+		$configuration = new Configuration($configCache, $configAdapter);
+
+		$this->assertEquals('now', $configuration->get('test', 'it'));
+		$this->assertEquals('now', $configuration->getCache()->get('test', 'it'));
+
+		// delete from cache only
+		$this->assertTrue($configuration->delete('test', 'it'));
+		// delete from db only
+		$this->assertTrue($configuration->delete('test', 'second'));
+		// no delete
+		$this->assertFalse($configuration->delete('test', 'third'));
+		// delete both
+		$this->assertTrue($configuration->delete('test', 'quarter'));
+
+		$this->assertEmpty($configuration->getCache()->getAll());
+	}
+}

tests/src/Core/Config/PConfigurationTest.php

@@ -0,0 +1,247 @@
+<?php
+
+namespace Friendica\Test\Core\Config;
+
+use Friendica\Core\Config\Adapter\IPConfigAdapter;
+use Friendica\Core\Config\Cache\ConfigCache;
+use Friendica\Core\Config\PConfiguration;
+use Friendica\Test\MockedTest;
+
+class PConfigurationTest extends MockedTest
+{
+	public function dataTests()
+	{
+		return [
+			'string'       => ['data' => 'it'],
+			'boolTrue'     => ['data' => true],
+			'boolFalse'    => ['data' => false],
+			'integer'      => ['data' => 235],
+			'decimal'      => ['data' => 2.456],
+			'array'        => ['data' => ['1', 2, '3', true, false]],
+			'boolIntTrue'  => ['data' => 1],
+			'boolIntFalse' => ['Data' => 0],
+		];
+	}
+
+	/**
+	 * Test the configuration load() method
+	 */
+	public function testCacheLoad()
+	{
+		$uid = 234;
+		$configCache = new ConfigCache();
+		$configAdapter = \Mockery::mock(IPConfigAdapter::class);
+		$configAdapter->shouldReceive('isConnected')->andReturn(true)->twice();
+		// expected loading
+		$configAdapter->shouldReceive('load')
+			->with($uid, 'testing')
+			->andReturn(['testing' => ['test' => 'it']])
+			->once();
+		$configAdapter->shouldReceive('isLoaded')->with($uid, 'testing', 'test')->andReturn(true)->once();
+
+		$configuration = new PConfiguration($configCache, $configAdapter);
+		$configuration->load($uid, 'testing');
+
+		$this->assertEquals('it', $configuration->get($uid, 'testing', 'test'));
+	}
+
+	/**
+	 * Test the configuration load() method with overwrite
+	 */
+	public function testCacheLoadDouble()
+	{
+		$uid = 234;
+		$configCache = new ConfigCache();
+		$configAdapter = \Mockery::mock(IPConfigAdapter::class);
+		$configAdapter->shouldReceive('isConnected')->andReturn(true)->times(4);
+		// expected loading
+		$configAdapter->shouldReceive('load')->with($uid, 'testing')->andReturn(['testing' => ['test' => 'it']])->once();
+		$configAdapter->shouldReceive('isLoaded')->with($uid, 'testing', 'test')->andReturn(true)->twice();
+		// expected next loading
+		$configAdapter->shouldReceive('load')->andReturn(['testing' => ['test' => 'again']])->once();
+
+		$configuration = new PConfiguration($configCache, $configAdapter);
+		$configuration->load($uid, 'testing');
+
+		$this->assertEquals('it', $configuration->get($uid, 'testing', 'test'));
+
+		$configuration->load($uid, 'testing');
+
+		$this->assertEquals('again', $configuration->get($uid, 'testing', 'test'));
+	}
+
+	/**
+	 * Test the configuration get() and set() methods without adapter
+	 * @dataProvider dataTests
+	 */
+	public function testSetGetWithoutDB($data)
+	{
+		$uid = 234;
+		$configCache = new ConfigCache();
+		$configAdapter = \Mockery::mock(IPConfigAdapter::class);
+		$configAdapter->shouldReceive('isConnected')->andReturn(false)->times(2);
+
+		$configuration = new PConfiguration($configCache, $configAdapter);
+
+		$this->assertTrue($configuration->set($uid, 'test', 'it', $data));
+
+		$this->assertEquals($data, $configuration->get($uid, 'test', 'it'));
+	}
+
+	/**
+	 * Test the configuration get() and set() methods with adapter
+	 * @dataProvider dataTests
+	 */
+	public function testSetGetWithDB($data)
+	{
+		$uid = 234;
+		$configCache = new ConfigCache();
+		$configAdapter = \Mockery::mock(IPConfigAdapter::class);
+		$configAdapter->shouldReceive('isConnected')->andReturn(true)->times(2);
+		$configAdapter->shouldReceive('isLoaded')->with($uid, 'test', 'it')->andReturn(true)->once();
+		$configAdapter->shouldReceive('set')->with($uid, 'test', 'it', $data)->andReturn(true)->once();
+
+		$configuration = new PConfiguration($configCache, $configAdapter);
+
+		$this->assertTrue($configuration->set($uid, 'test', 'it', $data));
+
+		$this->assertEquals($data, $configuration->get($uid, 'test', 'it'));
+	}
+
+	/**
+	 * Test the configuration get() method with wrong value and no db
+	 */
+	public function testGetWrongWithoutDB()
+	{
+		$uid = 234;
+		$configCache = new ConfigCache();
+		$configAdapter = \Mockery::mock(IPConfigAdapter::class);
+		$configAdapter->shouldReceive('isConnected')->andReturn(false)->times(3);
+
+		$configuration = new PConfiguration($configCache, $configAdapter);
+
+		// without refresh
+		$this->assertNull($configuration->get($uid, 'test', 'it'));
+
+		// with default value
+		$this->assertEquals('default', $configuration->get($uid, 'test', 'it', 'default'));
+
+		// with default value and refresh
+		$this->assertEquals('default', $configuration->get($uid, 'test', 'it', 'default', true));
+	}
+
+	/**
+	 * Test the configuration get() method with refresh
+	 * @dataProvider dataTests
+	 */
+	public function testGetWithRefresh($data)
+	{
+		$uid = 234;
+		$configCache = new ConfigCache();
+		$configAdapter = \Mockery::mock(IPConfigAdapter::class);
+		$configAdapter->shouldReceive('isConnected')->andReturn(true)->times(4);
+		$configAdapter->shouldReceive('isLoaded')->with($uid, 'test', 'it')->andReturn(false)->once();
+		$configAdapter->shouldReceive('get')->with($uid, 'test', 'it')->andReturn('now')->once();
+		$configAdapter->shouldReceive('isLoaded')->with($uid, 'test', 'it')->andReturn(true)->twice();
+		$configAdapter->shouldReceive('get')->with($uid, 'test', 'it')->andReturn($data)->once();
+		$configAdapter->shouldReceive('isLoaded')->with($uid, 'test', 'not')->andReturn(false)->once();
+		$configAdapter->shouldReceive('get')->with($uid, 'test', 'not')->andReturn('!<unset>!')->once();
+
+		$configuration = new PConfiguration($configCache, $configAdapter);
+
+		// without refresh
+		$this->assertEquals('now', $configuration->get($uid, 'test', 'it'));
+		// use the cache again
+		$this->assertEquals('now', $configuration->get($uid, 'test', 'it'));
+
+		// with refresh (and load the second value out of the db)
+		$this->assertEquals($data, $configuration->get($uid, 'test', 'it', null, true));
+
+		// without refresh and wrong value and default
+		$this->assertEquals('default', $configuration->get($uid, 'test', 'not', 'default'));
+	}
+
+	/**
+	 * Test the configuration get() method with different isLoaded settings
+	 * @dataProvider dataTests
+	 */
+	public function testGetWithoutLoaded($data)
+	{
+		$uid = 234;
+		$configCache = new ConfigCache();
+		$configAdapter = \Mockery::mock(IPConfigAdapter::class);
+		$configAdapter->shouldReceive('isConnected')->andReturn(true)->times(3);
+
+		$configAdapter->shouldReceive('isLoaded')->with($uid, 'test', 'it')->andReturn(false)->once();
+		$configAdapter->shouldReceive('get')->with($uid, 'test', 'it')->andReturn('!<unset>!')->once();
+
+		$configAdapter->shouldReceive('isLoaded')->with($uid, 'test', 'it')->andReturn(false)->once();
+		$configAdapter->shouldReceive('get')->with($uid, 'test', 'it')->andReturn($data)->once();
+
+		$configAdapter->shouldReceive('isLoaded')->with($uid, 'test', 'it')->andReturn(true)->once();
+
+		$configuration = new PConfiguration($configCache, $configAdapter);
+
+		// first run is not loaded and no data is found in the DB
+		$this->assertNull($configuration->get($uid, 'test', 'it'));
+
+		// second run is not loaded, but now data is found in the db (overwrote cache)
+		$this->assertEquals($data, $configuration->get($uid,'test', 'it'));
+
+		// third run is loaded and therefore cache is used
+		$this->assertEquals($data, $configuration->get($uid,'test', 'it'));
+	}
+
+	/**
+	 * Test the configuration delete() method without adapter
+	 * @dataProvider dataTests
+	 */
+	public function testDeleteWithoutDB($data)
+	{
+		$uid = 234;
+		$configCache = new ConfigCache();
+		$configAdapter = \Mockery::mock(IPConfigAdapter::class);
+		$configAdapter->shouldReceive('isConnected')->andReturn(false)->times(4);
+
+		$configuration = new PConfiguration($configCache, $configAdapter);
+
+		$this->assertTrue($configuration->set($uid, 'test', 'it', $data));
+		$this->assertEquals($data, $configuration->get($uid, 'test', 'it'));
+
+		$this->assertTrue($configuration->delete($uid, 'test', 'it'));
+		$this->assertNull($configuration->get($uid, 'test', 'it'));
+	}
+
+	/**
+	 * Test the configuration delete() method with adapter
+	 */
+	public function testDeleteWithDB()
+	{
+		$uid = 234;
+		$configCache = new ConfigCache();
+		$configAdapter = \Mockery::mock(IPConfigAdapter::class);
+		$configAdapter->shouldReceive('isConnected')->andReturn(true)->times(6);
+		$configAdapter->shouldReceive('set')->with($uid, 'test', 'it', 'now')->andReturn(false)->once();
+		$configAdapter->shouldReceive('isLoaded')->with($uid, 'test', 'it')->andReturn(true)->once();
+
+		$configAdapter->shouldReceive('delete')->with($uid, 'test', 'it')->andReturn(false)->once();
+
+		$configAdapter->shouldReceive('delete')->with($uid, 'test', 'second')->andReturn(true)->once();
+		$configAdapter->shouldReceive('delete')->with($uid, 'test', 'third')->andReturn(false)->once();
+		$configAdapter->shouldReceive('delete')->with($uid, 'test', 'quarter')->andReturn(true)->once();
+
+		$configuration = new PConfiguration($configCache, $configAdapter);
+
+		$this->assertFalse($configuration->set($uid, 'test', 'it', 'now'));
+		$this->assertEquals('now', $configuration->get($uid, 'test', 'it'));
+
+		// delete from set
+		$this->assertTrue($configuration->delete($uid, 'test', 'it'));
+		// delete from db only
+		$this->assertTrue($configuration->delete($uid, 'test', 'second'));
+		// no delete
+		$this->assertFalse($configuration->delete($uid, 'test', 'third'));
+		// delete both
+		$this->assertTrue($configuration->delete($uid, 'test', 'quarter'));
+	}
+}

tests/src/Core/Console/AutomaticInstallationConsoleTest.php

@@ -52,9 +52,9 @@ class AutomaticInstallationConsoleTest extends ConsoleTest
 		$this->db_user = getenv('MYSQL_USERNAME') . getenv('MYSQL_USER');
 		$this->db_pass = getenv('MYSQL_PASSWORD');
 
-		$this->configCache
+		$this->configMock
 			->shouldReceive('get')
-			->with('config', 'php_path', NULL)
+			->with('config', 'php_path')
 			->andReturn(false);
 
 		$this->mockL10nT();

tests/src/Core/Console/ConfigConsoleTest.php

@@ -32,14 +32,14 @@ class ConfigConsoleTest extends ConsoleTest
 	}
 
 	function testSetGetKeyValue() {
-		$this->configCache
+		$this->configMock
 			->shouldReceive('set')
 			->with('config', 'test', 'now')
 			->andReturn(true)
 			->once();
-		$this->configCache
+		$this->configMock
 			->shouldReceive('get')
-			->with('config', 'test', NULL)
+			->with('config', 'test')
 			->andReturn('now')
 			->twice();
 
@@ -50,9 +50,9 @@ class ConfigConsoleTest extends ConsoleTest
 		$txt = $this->dumpExecute($console);
 		$this->assertEquals("config.test <= now\n", $txt);
 
-		$this->configCache
+		$this->configMock
 			->shouldReceive('get')
-			->with('config', 'test', null)
+			->with('config', 'test')
 			->andReturn('now')
 			->once();
 
@@ -62,9 +62,9 @@ class ConfigConsoleTest extends ConsoleTest
 		$txt = $this->dumpExecute($console);
 		$this->assertEquals("config.test => now\n", $txt);
 
-		$this->configCache
+		$this->configMock
 			->shouldReceive('get')
-			->with('config', 'test', null)
+			->with('config', 'test')
 			->andReturn(null)
 			->once();
 
@@ -77,9 +77,9 @@ class ConfigConsoleTest extends ConsoleTest
 
 	function testSetArrayValue() {
 		$testArray = [1, 2, 3];
-		$this->configCache
+		$this->configMock
 			->shouldReceive('get')
-			->with('config', 'test', null)
+			->with('config', 'test')
 			->andReturn($testArray)
 			->once();
 
@@ -105,9 +105,9 @@ class ConfigConsoleTest extends ConsoleTest
 	}
 
 	function testVerbose() {
-		$this->configCache
+		$this->configMock
 			->shouldReceive('get')
-			->with('test', 'it', null)
+			->with('test', 'it')
 			->andReturn('now')
 			->once();
 		$console = new Config($this->consoleArgv);
@@ -133,14 +133,14 @@ CONF;
 	}
 
 	function testUnableToSet() {
-		$this->configCache
+		$this->configMock
 			->shouldReceive('set')
 			->with('test', 'it', 'now')
 			->andReturn(false)
 			->once();
-		$this->configCache
+		$this->configMock
 			->shouldReceive('get')
-			->with('test', 'it', NULL)
+			->with('test', 'it')
 			->andReturn(NULL)
 			->once();
 		$console = new Config();

tests/src/Core/Console/ConsoleTest.php

@@ -29,8 +29,7 @@ abstract class ConsoleTest extends MockedTest
 		Intercept::setUp();
 
 		$this->setUpVfsDir();
-		$configMock = \Mockery::mock('Friendica\Core\Config\ConfigCache');
+		$this->mockApp($this->root);
-		$this->mockApp($this->root, $configMock);
 	}
 
 	/**

tests/src/Core/Lock/LockTest.php

@@ -27,8 +27,7 @@ abstract class LockTest extends MockedTest
 	{
 		// Reusable App object
 		$this->setUpVfsDir();
-		$configMock = \Mockery::mock('Friendica\Core\Config\ConfigCache');
+		$this->mockApp($this->root);
-		$this->mockApp($this->root, $configMock);
 		$this->app
 			->shouldReceive('getHostname')
 			->andReturn('friendica.local');

tests/src/Core/Lock/MemcacheCacheLockDriverTest.php

@@ -13,14 +13,14 @@ class MemcacheCacheLockDriverTest extends LockTest
 {
 	protected function getInstance()
 	{
-		$this->configCache
+		$this->configMock
 			->shouldReceive('get')
-			->with('system', 'memcache_host', NULL)
+			->with('system', 'memcache_host')
 			->andReturn('localhost');
 
-		$this->configCache
+		$this->configMock
 			->shouldReceive('get')
-			->with('system', 'memcache_port', NULL)
+			->with('system', 'memcache_port')
 			->andReturn(11211);
 
 		return new CacheLockDriver(CacheDriverFactory::create('memcache'));

tests/src/Core/Lock/MemcachedCacheLockDriverTest.php

@@ -13,9 +13,9 @@ class MemcachedCacheLockDriverTest extends LockTest
 {
 	protected function getInstance()
 	{
-		$this->configCache
+		$this->configMock
 			->shouldReceive('get')
-			->with('system', 'memcached_hosts', NULL)
+			->with('system', 'memcached_hosts')
 			->andReturn([0 => 'localhost, 11211']);
 
 		return new CacheLockDriver(CacheDriverFactory::create('memcached'));

tests/src/Core/Lock/RedisCacheLockDriverTest.php

@@ -13,14 +13,14 @@ class RedisCacheLockDriverTest extends LockTest
 {
 	protected function getInstance()
 	{
-		$this->configCache
+		$this->configMock
 			->shouldReceive('get')
-			->with('system', 'redis_host', NULL)
+			->with('system', 'redis_host')
 			->andReturn('localhost');
 
-		$this->configCache
+		$this->configMock
 			->shouldReceive('get')
-			->with('system', 'redis_port', NULL)
+			->with('system', 'redis_port')
 			->andReturn(null);
 
 		return new CacheLockDriver(CacheDriverFactory::create('redis'));

tests/src/Core/Lock/SemaphoreLockDriverTest.php

@@ -12,9 +12,9 @@ class SemaphoreLockDriverTest extends LockTest
 
 		$this->app->shouldReceive('getHostname')->andReturn('friendica.local');
 
-		$this->configCache
+		$this->configMock
 			->shouldReceive('get')
-			->with('system', 'temppath', NULL)
+			->with('system', 'temppath')
 			->andReturn('/tmp/');
 	}
 

tests/src/Database/DBATest.php

@@ -3,6 +3,7 @@ namespace Friendica\Test\Database;
 
 use Friendica\App;
 use Friendica\Core\Config;
+use Friendica\Core\Config\Cache;
 use Friendica\Database\DBA;
 use Friendica\Factory;
 use Friendica\Test\DatabaseTest;
@@ -13,11 +14,14 @@ class DBATest extends DatabaseTest
 	public function setUp()
 	{
 		$basedir = BasePath::create(dirname(__DIR__) . '/../../');
-		$configLoader = new Config\ConfigCacheLoader($basedir);
+		$configLoader = new Cache\ConfigCacheLoader($basedir);
-		$config = Factory\ConfigFactory::createCache($configLoader);
+		$configCache = Factory\ConfigFactory::createCache($configLoader);
+		$profiler = Factory\ProfilerFactory::create($configCache);
+		Factory\DBFactory::init($configCache, $profiler, $_SERVER);
+		$config = Factory\ConfigFactory::createConfig($configCache);
+		Factory\ConfigFactory::createPConfig($configCache);
 		$logger = Factory\LoggerFactory::create('test', $config);
-		$this->app = new App($config, $logger, false);
+		$this->app = new App($config, $logger, $profiler, false);
-		$this->logOutput = FActory\LoggerFactory::enableTest($this->app->getLogger());
 
 		parent::setUp();
 

tests/src/Database/DBStructureTest.php

@@ -3,7 +3,7 @@
 namespace Friendica\Test\Database;
 
 use Friendica\App;
-use Friendica\Core\Config;
+use Friendica\Core\Config\Cache;
 use Friendica\Database\DBStructure;
 use Friendica\Factory;
 use Friendica\Test\DatabaseTest;
@@ -14,11 +14,14 @@ class DBStructureTest extends DatabaseTest
 	public function setUp()
 	{
 		$basedir = BasePath::create(dirname(__DIR__) . '/../../');
-		$configLoader = new Config\ConfigCacheLoader($basedir);
+		$configLoader = new Cache\ConfigCacheLoader($basedir);
-		$config = Factory\ConfigFactory::createCache($configLoader);
+		$configCache = Factory\ConfigFactory::createCache($configLoader);
+		$profiler = Factory\ProfilerFactory::create($configCache);
+		Factory\DBFactory::init($configCache, $profiler, $_SERVER);
+		$config = Factory\ConfigFactory::createConfig($configCache);
+		Factory\ConfigFactory::createPConfig($configCache);
 		$logger = Factory\LoggerFactory::create('test', $config);
-		$this->app = new App($config, $logger, false);
+		$this->app = new App($config, $logger, $profiler, false);
-		$this->logOutput = FActory\LoggerFactory::enableTest($this->app->getLogger());
 
 		parent::setUp();
 	}

tests/src/Util/ProfilerTest.php

@@ -0,0 +1,181 @@
+<?php
+
+namespace src\Util;
+
+use Friendica\Test\MockedTest;
+use Friendica\Util\Profiler;
+use Mockery\MockInterface;
+use Psr\Log\LoggerInterface;
+
+class ProfilerTest extends MockedTest
+{
+	/**
+	 * @var LoggerInterface|MockInterface
+	 */
+	private $logger;
+
+	protected function setUp()
+	{
+		parent::setUp();
+
+		$this->logger = \Mockery::mock('Psr\Log\LoggerInterface');
+	}
+
+	/**
+	 * Test the Profiler setup
+	 */
+	public function testSetUp()
+	{
+		$profiler = new Profiler(true, true);
+	}
+
+	/**
+	 * A dataset for different profiling settings
+	 * @return array
+	 */
+	public function dataPerformance()
+	{
+		return [
+			'database' => [
+				'timestamp' => time(),
+				'name' => 'database',
+				'functions' => ['test', 'it'],
+			],
+			'database_write' => [
+				'timestamp' => time(),
+				'name' => 'database_write',
+				'functions' => ['test', 'it2'],
+			],
+			'cache' => [
+				'timestamp' => time(),
+				'name' => 'cache',
+				'functions' => ['test', 'it3'],
+			],
+			'cache_write' => [
+				'timestamp' => time(),
+				'name' => 'cache_write',
+				'functions' => ['test', 'it4'],
+			],
+			'network' => [
+				'timestamp' => time(),
+				'name' => 'network',
+				'functions' => ['test', 'it5'],
+			],
+			'file' => [
+				'timestamp' => time(),
+				'name' => 'file',
+				'functions' => [],
+			],
+			'rendering' => [
+				'timestamp' => time(),
+				'name' => 'rendering',
+				'functions' => ['test', 'it7'],
+			],
+			'parser' => [
+				'timestamp' => time(),
+				'name' => 'parser',
+				'functions' => ['test', 'it8'],
+			],
+			'marktime' => [
+				'timestamp' => time(),
+				'name' => 'parser',
+				'functions' => ['test'],
+			],
+			// This one isn't set during reset
+			'unknown' => [
+				'timestamp' => time(),
+				'name' => 'unknown',
+				'functions' => ['test'],
+			],
+		];
+	}
+
+	/**
+	 * Test the Profiler savetimestamp
+	 * @dataProvider dataPerformance
+	 */
+	public function testSaveTimestamp($timestamp, $name, array $functions)
+	{
+		$profiler = new Profiler(true, true);
+
+		foreach ($functions as $function) {
+			$profiler->saveTimestamp($timestamp, $name, $function);
+		}
+
+		$this->assertGreaterThanOrEqual(0, $profiler->get($name));
+	}
+
+	/**
+	 * Test the Profiler reset
+	 * @dataProvider dataPerformance
+	 */
+	public function testReset($timestamp, $name, array $functions)
+	{
+		$profiler = new Profiler(true, true);
+
+		$profiler->saveTimestamp($timestamp, $name);
+		$profiler->reset();
+
+		$this->assertEquals(0, $profiler->get($name));
+	}
+
+	public function dataBig()
+	{
+		return [
+			'big' => [
+				'data' => [
+					'database' => [
+						'timestamp' => time(),
+						'name' => 'database',
+						'functions' => ['test', 'it'],
+					],
+					'database_write' => [
+						'timestamp' => time(),
+						'name' => 'database_write',
+						'functions' => ['test', 'it2'],
+					],
+					'cache' => [
+						'timestamp' => time(),
+						'name' => 'cache',
+						'functions' => ['test', 'it3'],
+					],
+					'cache_write' => [
+						'timestamp' => time(),
+						'name' => 'cache_write',
+						'functions' => ['test', 'it4'],
+					],
+					'network' => [
+						'timestamp' => time(),
+						'name' => 'network',
+						'functions' => ['test', 'it5'],
+					],
+				]
+			]
+		];
+	}
+
+	/**
+	 * Test the output of the Profiler
+	 * @dataProvider dataBig
+	 */
+	public function testSaveLog($data)
+	{
+		$this->logger
+			->shouldReceive('info')
+			->with('test', \Mockery::any())
+			->once();
+		$this->logger
+			->shouldReceive('info')
+			->once();
+
+		$profiler = new Profiler(true, true);
+
+		foreach ($data as $perf => $items) {
+			foreach ($items['functions'] as $function) {
+				$profiler->saveTimestamp($items['timestamp'], $items['name'], $function);
+			}
+		}
+
+		$profiler->saveLog($this->logger, 'test');
+	}
+}