se/SE/se-lib/Core/AsyncJobsServer.php

<?php

Lib::loadClass('Request');

/**
 * @usage: Core_AsyncJobsServer::startAsyncJob(execPath, name, [ 'out.log', 'error.log', 'cwd', 'args' ])
 * @usage: Core_AsyncJobsServer::isInstalled()
 */

class Core_AsyncJobsServer {

	static function path_nodeJS() { return "/usr/local/bin/node"; }
	// npm_path="/usr/local/bin/npm"
	static function path_pm2() { return "/usr/local/bin/pm2"; }
	static function path_pm2UserWww() { return "/Library/WebServer/.pm2/"; }

	static function startAsyncJob($execPath, $name, $props = [], &$out) {
		if (!$execPath) throw new Exception("Missing job exec path");
		if (!$name) throw new Exception("Missing job name");

		$pathLog = V::get('out.log', '', $props);
		$pathError = V::get('error.log', '', $props);
		// for Ant:
		// index.php?_route=UrlAction_Ant&_task=ant&path=default_db.in7_dziennik_koresp/etykieta&typeName=default_db:IN7_DZIENNIK_KORESP&primaryKey=66263&primaryKeyField=ID
		// index.php?_route=UrlAction_Ant
		// 	& _task=ant
		// 	& path=default_db.in7_dziennik_koresp/test-bash
		// 	& typeName=default_db:IN7_DZIENNIK_KORESP
		// 	& primaryKey=66263
		// 	& primaryKeyField=ID
		// index.php?_route=UrlAction_Ant
		// 	& _task=ant
		// 	& path=default_db.in7_dziennik_koresp/test-bash
		// 	& template=test-loop
		// 	& typeName=default_db:IN7_DZIENNIK_KORESP
		// 	& primaryKey=66263
		// 	& primaryKeyField=ID
		// ant=default_db:IN7_DZIENNIK_KORESP/test-bash & task=test-loop & ns=default_db:IN7_DZIENNIK_KORESP & pk=66263
		if (empty($pathLog)) throw new Exception("Missing job log path");
		if (empty($pathError)) throw new Exception("Missing job error path");
		$execArg = V::get('args', '', $props); // execArg for script
		$cmd = implode(" ", [
			"pm2 start '{$execPath}'",
			(!empty($props['cwd'])) ? "--cwd=\"{$props['cwd']}\"" : "",
			"--name '{$name}'",
			"--no-autorestart",
			"--output '{$pathLog}'",
			"--error '{$pathError}'",
			"--time", // prefix time to log entry
			(!empty(trim($execArg))) ? "-- {$execArg}" : "",
		]);
		// return V::shell_exec($cmd);

		V::exec($cmd . " 2>&1", $out, $ret);
		// echo "cmd: <code>{$cmd}</code><br>RETURN CODE: '{$ret}'<br><pre>OUTPUT:\n" . implode("\n", $out). "</pre>";
		if (0 !== $ret) {
			// [PM2][ERROR] Script already launched, add -f option to force re-execution
			$firstLine = reset($out);
			if (0 === strpos($firstLine, '[PM2][ERROR] Script already launched')) {
				$out = [ "[PM2][ERROR] Script already launched" ];
			}
			// throw new Exception("Nie uruchomiono zadania. " . implode(" ", $out));
		} else {
			// [PM2] Applying action restartProcessId on app [biall-backup-db](ids: [ 0 ])
			// [PM2] [biall-backup-db](0) ✓
			// [PM2] Process successfully started
			$line0 = reset($out);
			$line1 = next($out);
			$line2 = next($out);
			if (0 === strpos($line0, '[PM2] Applying action')
				&& 0 === strpos($line1, '[PM2] [')
				&& 0 === strpos($line2, '[PM2] Process successfully started')
			) {
				$out = [ "[PM2] Process successfully started" ];
				return 0;
			}
			// [PM2] Starting /opt/local/pl.procesy5/async_jobs/2020-02-26/3/start.sh in fork_mode (1 instance) [PM2] Done.
			if (0 === strpos($line0, '[PM2] Starting ')
				&& 0 === strpos($line1, '[PM2] Done')
			) {
				$out = [ "[PM2] Process successfully started" ];
				return 0;
			}
			// throw new AlertInfoException("Uruchomiono zadanie. " . implode(" ", $out));
		}
		return $ret;
	}

	static function runPm2Script($props, &$out) { // TODO: mv to AsyncJobs / @return bool $ret from exec
		if (empty($props['jobName'])) throw new Exception("Missing jobName");
		if (empty($props['path'])) throw new Exception("Missing path");
		// cwd	(string)	“/var/www/”	the directory from which your app will be launched
		$jobName = $props['jobName'];
		$outLogPath = "/tmp/p5-async-jobs--{$jobName}--out.log";
		$errLogPath = "/tmp/p5-async-jobs--{$jobName}--err.log";
		$path = $props['path'];
		$args = trim(V::get('args', '', $props));
		$cmd = implode(" ", [
			"pm2 start '{$path}'",
			(!empty($props['cwd'])) ? "--cwd=\"{$props['cwd']}\"" : "",
			"--name '{$jobName}'",
			"--no-autorestart",
			"--output '{$outLogPath}'",
			"--error  '{$errLogPath}'",
			"--time", // prefix time to log entry
			(!empty($args)) ? "-- {$args}" : "",
		]);
		V::exec($cmd . " 2>&1", $out, $ret);
		// echo "cmd: <code>{$cmd}</code><br>RETURN CODE: '{$ret}'<br><pre>OUTPUT:\n" . implode("\n", $out). "</pre>";
		if (0 !== $ret) {
			// [PM2][ERROR] Script already launched, add -f option to force re-execution
			$firstLine = reset($out);
			if (0 === strpos($firstLine, '[PM2][ERROR] Script already launched')) {
				$out = [ "[PM2][ERROR] Script already launched" ];
			}
			// throw new Exception("Nie uruchomiono backupu. " . implode(" ", $out));
		} else {
			// [PM2] Applying action restartProcessId on app [biall-backup-db](ids: [ 0 ])
			// [PM2] [biall-backup-db](0) ✓
			// [PM2] Process successfully started
			$line0 = reset($out);
			$line1 = next($out);
			$line2 = next($out);
			if (0 === strpos($line0, '[PM2] Applying action')
				&& 0 === strpos($line1, '[PM2] [')
				&& 0 === strpos($line2, '[PM2] Process successfully started')
			) {
				$out = [ "[PM2] Process successfully started" ];
			}
			// throw new AlertInfoException("Uruchomiono backup. " . implode(" ", $out));
		}
		return $ret;
	}

	static function isInstalled() {
		// V::exec("/usr/local/bin/pm2 --version 2>&1", $out, $ret);
		V::exec("/usr/local/bin/pm2 ping 2>&1", $out, $ret); // expected "{ msg: 'pong' }"
		// echo UI::h('pre', [], "ret({$ret}):\n" . implode("\n", $out));
		if ($ret === 0) {
			// [PM2] Spawning PM2 daemon with pm2_home=/Library/WebServer/.pm2
			// [PM2] PM2 Successfully daemonized
			// { msg: 'pong' }
		}
		if ($ret !== 0) {
			if (!file_exists(self::path_nodeJS())) throw new Exception("pm2 not installed");
			// if [ ! -f "$node_path" ]; then
			// 	echo "$node_path not exists"
			// 	wget https://nodejs.org/dist/v12.15.0/node-v12.15.0.pkg
			// 	sudo installer -verbose -pkg node-v12.15.0.pkg -target /
			// fi
			// # node -v # expected v12.15.0
			if (!file_exists(self::path_pm2())) throw new Exception("pm2 not installed");
			// npm install -g pm2
			// sudo npm install -g pm2
			// pm2 -version # expected 4.2.3
			if (!file_exists(self::path_pm2UserWww())) throw new Exception("pm2 user folder not exists");
			// FIX for Mac OS:
			// $ sudo mkdir /Library/WebServer/.pm2/
			// $ sudo chown _www /Library/WebServer/.pm2/
			throw new Exception("Error pm2"); // unknown error
		}
	}

}