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|
<?php
namespace Icinga\Module\Director\Daemon;
use gipfl\LinuxHealth\Memory;
use Icinga\Application\Logger;
use ipl\Stdlib\EventEmitter;
use React\ChildProcess\Process;
use React\EventLoop\LoopInterface;
use React\Promise\Deferred;
use function React\Promise\resolve;
class ProcessList
{
use EventEmitter;
/** @var LoopInterface */
protected $loop;
/** @var \SplObjectStorage */
protected $processes;
/**
* ProcessList constructor.
* @param LoopInterface $loop
* @param Process[] $processes
*/
public function __construct(LoopInterface $loop, array $processes = [])
{
$this->loop = $loop;
$this->processes = new \SplObjectStorage();
foreach ($processes as $process) {
$this->attach($process);
}
}
public function attach(Process $process)
{
$this->processes->attach($process);
$this->emit('start', [$process]);
$process->on('exit', function () use ($process) {
$this->detach($process);
$this->emit('exit', [$process]);
});
return $this;
}
public function detach(Process $process)
{
$this->processes->detach($process);
return $this;
}
/**
* @param int $timeout
* @return \React\Promise\ExtendedPromiseInterface
*/
public function killOrTerminate($timeout = 5)
{
if ($this->processes->count() === 0) {
return resolve();
}
$deferred = new Deferred();
$killTimer = $this->loop->addTimer($timeout, function () use ($deferred) {
/** @var Process $process */
foreach ($this->processes as $process) {
$pid = $process->getPid();
Logger::error("Process $pid is still running, sending SIGKILL");
$process->terminate(SIGKILL);
}
// Let's a little bit of delay after KILLing
$this->loop->addTimer(0.1, function () use ($deferred) {
$deferred->resolve();
});
});
$timer = $this->loop->addPeriodicTimer($timeout / 20, function () use (
$deferred,
&$timer,
$killTimer
) {
$stopped = [];
/** @var Process $process */
foreach ($this->processes as $process) {
if (! $process->isRunning()) {
$stopped[] = $process;
}
}
foreach ($stopped as $process) {
$this->processes->detach($process);
}
if ($this->processes->count() === 0) {
$this->loop->cancelTimer($timer);
$this->loop->cancelTimer($killTimer);
$deferred->resolve();
}
});
/** @var Process $process */
foreach ($this->processes as $process) {
$process->terminate(SIGTERM);
}
return $deferred->promise();
}
public function getOverview()
{
$info = [];
/** @var Process $process */
foreach ($this->processes as $process) {
$pid = $process->getPid();
$info[$pid] = (object) [
'command' => preg_replace('/^exec /', '', $process->getCommand()),
'running' => $process->isRunning(),
'memory' => Memory::getUsageForPid($pid)
];
}
return $info;
}
}
|
