Add new Cache console command

src/Core/Console.php

@@ -14,6 +14,7 @@ class Console extends \Asika\SimpleConsole\Console
 	protected $customHelpOptions = ['h', 'help', '?'];
 
 	protected $subConsoles = [
+		'cache'                  => __NAMESPACE__ . '\Console\Cache',
 		'config'                 => __NAMESPACE__ . '\Console\Config',
 		'createdoxygen'          => __NAMESPACE__ . '\Console\CreateDoxygen',
 		'docbloxerrorchecker'    => __NAMESPACE__ . '\Console\DocBloxErrorChecker',
@@ -37,6 +38,7 @@ class Console extends \Asika\SimpleConsole\Console
 Usage: bin/console [--version] [-h|--help|-?] <command> [<args>] [-v]
 
 Commands:
+	cache                  Manage node cache
 	config                 Edit site config
 	createdoxygen          Generate Doxygen headers
 	dbstructure            Do database updates

src/Core/Console/Cache.php

@@ -0,0 +1,180 @@
+<?php
+
+namespace Friendica\Core\Console;
+
+use Asika\SimpleConsole\CommandArgsException;
+use Friendica\App;
+use Friendica\Core;
+use RuntimeException;
+
+/**
+ * @brief tool to access the cache from the CLI
+ *
+ * With this script you can access the cache of your node from the CLI.
+ * You can read current values stored in the cache and set new values
+ * in cache keys.
+ *
+ * @author Hypolite Petovan <hypolite@mrpetovan.com>
+ */
+class Cache extends \Asika\SimpleConsole\Console
+{
+	protected $helpOptions = ['h', 'help', '?'];
+
+	protected function getHelp()
+	{
+		$help = <<<HELP
+console cache - Manage node cache
+Synopsis
+	bin/console cache list [-h|--help|-?] [-v]
+	bin/console cache get <key> [-h|--help|-?] [-v]
+	bin/console cache set <key> <value> [-h|--help|-?] [-v]
+	bin/console cache flush [-h|--help|-?] [-v]
+	bin/console cache clear [-h|--help|-?] [-v]
+
+Description
+	bin/console cache list [<prefix>]
+		List all cache keys, optionally filtered by a prefix
+
+	bin/console cache get <key>
+		Shows the value of the provided cache key
+
+	bin/console cache set <key> <value> [<ttl>]
+		Sets the value of the provided cache key, optionally with the provided TTL (time to live) with a default of five minutes.
+
+	bin/console cache flush
+		Clears expired cache keys
+
+	bin/console cache clear
+		Clears all cache keys
+
+Options
+    -h|--help|-? Show help information
+    -v           Show more debug information.
+HELP;
+		return $help;
+	}
+
+	protected function doExecute()
+	{
+		$a = \Friendica\BaseObject::getApp();
+
+		if ($this->getOption('v')) {
+			$this->out('Executable: ' . $this->executable);
+			$this->out('Class: ' . __CLASS__);
+			$this->out('Arguments: ' . var_export($this->args, true));
+			$this->out('Options: ' . var_export($this->options, true));
+		}
+
+		if (!($a->mode & App::MODE_DBCONFIGAVAILABLE)) {
+			$this->out('Database isn\'t ready or populated yet, database cache won\'t be available');
+		}
+
+		Core\Cache::init();
+
+		if ($this->getOption('v')) {
+			$this->out('Cache Driver Name: ' . Core\Cache::$driver_name);
+			$this->out('Cache Driver Class: ' . Core\Cache::$driver_class);
+		}
+
+		switch ($this->getArgument(0)) {
+			case 'list':
+				$this->executeList();
+				break;
+			case 'get':
+				$this->executeGet();
+				break;
+			case 'set':
+				$this->executeSet();
+				break;
+			case 'flush':
+				$this->executeFlush();
+				break;
+			case 'clear':
+				$this->executeClear();
+				break;
+		}
+
+		if (count($this->args) == 0) {
+			$this->out($this->getHelp());
+			return 0;
+		}
+
+		return 0;
+	}
+
+	private function executeList()
+	{
+		$prefix = $this->getArgument(1);
+		$keys = Core\Cache::getAllKeys();
+
+		if (empty($prefix)) {
+			$this->out('Listing all cache keys:');
+		} else {
+			$this->out('Listing all cache keys starting with "' . $prefix . '":');
+		}
+
+		$count = 0;
+		foreach ($keys as $key) {
+			if (empty($prefix) || strpos($key, $prefix) === 0) {
+				$this->out($key);
+				$count++;
+			}
+		}
+
+		$this->out($count . ' keys found');
+	}
+
+	private function executeGet()
+	{
+		if (count($this->args) >= 2) {
+			$key = $this->getArgument(1);
+			$value = Core\Cache::get($key);
+
+			$this->out("{$key} => " . var_export($value, true));
+		} else {
+			throw new CommandArgsException('Too few arguments for get');
+		}
+	}
+
+	private function executeSet()
+	{
+		if (count($this->args) >= 3) {
+			$key = $this->getArgument(1);
+			$value = $this->getArgument(2);
+			$duration = intval($this->getArgument(3, Core\Cache::FIVE_MINUTES));
+
+			if (is_array(Core\Cache::get($key))) {
+				throw new RuntimeException("$key is an array and can't be set using this command.");
+			}
+
+			$result = Core\Cache::set($key, $value, $duration);
+			if ($result) {
+				$this->out("{$key} <= " . Core\Cache::get($key));
+			} else {
+				$this->out("Unable to set {$key}");
+			}
+		} else {
+			throw new CommandArgsException('Too few arguments for set');
+		}
+	}
+
+	private function executeFlush()
+	{
+		$result = Core\Cache::clear();
+		if ($result) {
+			$this->out('Cache successfully flushed');
+		} else {
+			$this->out('Unable to flush the cache');
+		}
+	}
+
+	private function executeClear()
+	{
+		$result = Core\Cache::clear(false);
+		if ($result) {
+			$this->out('Cache successfully cleared');
+		} else {
+			$this->out('Unable to flush the cache');
+		}
+	}
+}