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Propagate kill signal to the child server process #163

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Merged
merged 1 commit into from
May 30, 2016
Merged

Propagate kill signal to the child server process #163

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31 changes: 31 additions & 0 deletions src/Application/Cli/PreviewCommand.php
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Process\Process;
use Symfony\Component\Process\ProcessBuilder;

/**
Expand Down Expand Up @@ -98,6 +99,19 @@ protected function execute(InputInterface $input, OutputInterface $output)

$serverProcess = $this->startWebServer($input, $output, $targetDirectory);

if (function_exists('pcntl_signal')) {
declare(ticks=1);

$handler = function ($signal) use ($serverProcess, $output) {
$this->stopWebServer($serverProcess, $output, $signal);
};

foreach ([SIGINT, SIGTERM] as $signal) {
pcntl_signal($signal, $handler);
}
}


// Watch for changes
while ($serverProcess->isRunning()) {
$files = $watchlist->getChangedFiles();
Expand Down Expand Up @@ -146,6 +160,23 @@ private function startWebServer(InputInterface $input, OutputInterface $output,
return $process;
}

private function stopWebServer(Process $serverProcess, OutputInterface $output, $signal = null)
{
$signal = $signal ?: SIGTERM;

if ($serverProcess->isRunning()) {
$output->writeln(sprintf('Killing server with signal <comment>%s</comment>', $signal));

$serverProcess->stop(0, $signal);
}

if ($serverProcess->isRunning()) {
$output->writeln(sprintf('Server was killed with signal <comment>%s</comment>', $signal));
} else {
$output->writeln(sprintf('Unable to kill the server with signal <comment>%s</comment>', $signal));
}
}

private function startLivereload($executablePath, OutputInterface $output, $sourceDirectory, $targetDirectory)
{
$builder = new ProcessBuilder([$executablePath, $targetDirectory, '-w', '3']);
Expand Down