public function start($id)
{
if (!($workflow = Workflow::find((int) $id))) {
return redirect('workflows')->with('status_error', "Workflow not found.");
}
if (empty($workflow->path)) {
return redirect('workflows')->with('status_error', "Workflow not found.");
}
if (!empty($workflow->pid)) {
return redirect('workflows')->with('status_error', "Workflow already started.");
}
if ($anotherStarted = Workflow::where('id', '!=', $id)->where('pid', '!=', '')->first()) {
return redirect('workflows')->with('status_error', "Another workflow is already running. Please stop any other workflow first.");
}
if (!($settings = Settings::first())) {
return redirect('workflows')->with('status_error', "Please fill in all the required settings.");
}
if (empty($settings->home_path)) {
return redirect('workflows')->with('status_error', "Please fill in your home path.");
}
if (empty($settings->c9_path)) {
return redirect('workflows')->with('status_error', "Please specify Cloud9 IDE path in settings.");
}
$command = "/usr/bin/nohup {$settings->nodejs_path} {$settings->c9_path} -w {$workflow->path} {$workflow->args} {$settings->default_args} > /dev/null & echo \$!";
putenv("HOME={$settings->home_path}");
$return = shell_exec($command);
$pid = (int) $return;
if (!$pid) {
return redirect('workflows')->with('status_error', "Error while starting the server ({$return}).");
}
$workflow->pid = $pid;
$workflow->save();
return redirect('workflows')->with('status_success', "Workflow started. PID #{$pid}");
}
