Reworked the pidfile class
This commit is contained in:
parent
0f149a691e
commit
38d5932156
2 changed files with 93 additions and 75 deletions
|
|
@ -46,7 +46,6 @@ class ExAuth
|
|||
{
|
||||
private $bDebug;
|
||||
private $host;
|
||||
private $pidfile;
|
||||
|
||||
/**
|
||||
* @brief Create the class
|
||||
|
|
@ -313,21 +312,18 @@ class ExAuth
|
|||
return;
|
||||
}
|
||||
|
||||
$this->pidfile = new Pidfile($lockpath, $host);
|
||||
if ($this->pidfile->isRunning()) {
|
||||
$oldpid = $this->pidfile->pid();
|
||||
$this->writeLog(LOG_INFO, 'Process ' . $oldpid . ' was running for ' . $this->pidfile->runningTime() . ' seconds and will now be killed');
|
||||
$this->pidfile->kill();
|
||||
|
||||
// Wait until the other process is hopefully killed
|
||||
sleep(2);
|
||||
|
||||
$this->pidfile = new Pidfile($lockpath, $host);
|
||||
if ($oldpid == $this->pidfile->pid()) {
|
||||
$this->writeLog(LOG_ERR, 'Process ' . $oldpid . "wasn't killed in time. We now quit our process.");
|
||||
$file = $lockpath . DIRECTORY_SEPARATOR . $host;
|
||||
if (Pidfile::isRunningProcess($file)) {
|
||||
if (PidFile::killProcess($file)) {
|
||||
$this->writeLog(LOG_INFO, 'Old process was successfully killed');
|
||||
} else {
|
||||
$this->writeLog(LOG_ERR, "The old Process wasn't killed in time. We now quit our process.");
|
||||
die();
|
||||
}
|
||||
}
|
||||
|
||||
// Now it is safe to create the pid file
|
||||
Pidfile::create($file);
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
|
|||
|
|
@ -9,78 +9,100 @@ namespace Friendica\Util;
|
|||
*/
|
||||
class Pidfile
|
||||
{
|
||||
private $file;
|
||||
private $running;
|
||||
private $pid;
|
||||
|
||||
/**
|
||||
* @param string $dir path
|
||||
* @param string $name filename
|
||||
* @return void
|
||||
* @brief Read the pid from a given pid file
|
||||
*
|
||||
* @param string $file Filename of pid file
|
||||
*
|
||||
* @return boolean|string PID or "false" if not existent
|
||||
*/
|
||||
public function __construct($dir, $name)
|
||||
{
|
||||
$this->file = "$dir/$name";
|
||||
$this->running = false;
|
||||
|
||||
if (file_exists($this->file)) {
|
||||
$this->pid = trim(@file_get_contents($this->file));
|
||||
if (($this->pid != "") && posix_kill($this->pid, 0)) {
|
||||
$this->running = true;
|
||||
}
|
||||
static private function pidFromFile($file) {
|
||||
if (!file_exists($file)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!$this->running) {
|
||||
$this->pid = getmypid();
|
||||
file_put_contents($this->file, $this->pid);
|
||||
}
|
||||
return trim(@file_get_contents($file));
|
||||
}
|
||||
|
||||
/**
|
||||
* @return void
|
||||
*/
|
||||
public function __destruct()
|
||||
{
|
||||
if (!$this->running && file_exists($this->file)) {
|
||||
@unlink($this->file);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Check if a process with this pid file is already running
|
||||
* @brief Is there a running process with the given pid file
|
||||
*
|
||||
* @param string $file Filename of pid file
|
||||
*
|
||||
* @return boolean Is it running?
|
||||
*/
|
||||
public function isRunning()
|
||||
{
|
||||
return $this->running;
|
||||
}
|
||||
static public function isRunningProcess($file) {
|
||||
$pid = self::pidFromFile($file);
|
||||
|
||||
/**
|
||||
* @brief Return the pid of the process
|
||||
* @return boolean process id
|
||||
*/
|
||||
public function pid()
|
||||
{
|
||||
return $this->pid;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Returns the seconds that the old process was running
|
||||
* @return integer run time of the old process
|
||||
*/
|
||||
public function runningTime()
|
||||
{
|
||||
return time() - @filectime($this->file);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Kills the old process
|
||||
* @return boolean
|
||||
*/
|
||||
public function kill()
|
||||
{
|
||||
if (!empty($this->pid)) {
|
||||
return posix_kill($this->pid, SIGTERM);
|
||||
if (!$pid) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// Is the process running?
|
||||
$running = posix_kill($pid, 0);
|
||||
|
||||
// If not, then we will kill the stale file
|
||||
if (!$running) {
|
||||
self::delete($file);
|
||||
}
|
||||
return $running;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Kills a process from a given pid file
|
||||
*
|
||||
* @param string $file Filename of pid file
|
||||
*
|
||||
* @return boolean Was it killed successfully?
|
||||
*/
|
||||
static public function killProcess($file) {
|
||||
$pid = self::pidFromFile($file);
|
||||
|
||||
// We don't have a process id? then we quit
|
||||
if (!$pid) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// We now kill the process
|
||||
$killed = posix_kill($pid, SIGTERM);
|
||||
|
||||
// If we killed the process successfully, we can remove the pidfile
|
||||
if ($killed) {
|
||||
self::delete($file);
|
||||
}
|
||||
return $killed;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Creates a pid file
|
||||
*
|
||||
* @param string $file Filename of pid file
|
||||
*
|
||||
* @return boolean|string PID or "false" if not created
|
||||
*/
|
||||
static public function create($file) {
|
||||
$pid = self::pidFromFile($file);
|
||||
|
||||
// We have a process id? then we quit
|
||||
if ($pid) {
|
||||
return false;
|
||||
}
|
||||
|
||||
$pid = getmypid();
|
||||
file_put_contents($file, $pid);
|
||||
|
||||
// Now we check if everything is okay
|
||||
return self::pidFromFile($file);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Deletes a given pid file
|
||||
*
|
||||
* @param string $file Filename of pid file
|
||||
*
|
||||
* @return boolean Is it running?
|
||||
*/
|
||||
static public function delete($file) {
|
||||
return @unlink($file);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue