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/
lib
/
node_modules
/
pm2
/
lib
/
God
/ [
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]
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Methods.js
/** * Copyright 2013-2022 the PM2 project authors. All rights reserved. * Use of this source code is governed by a license that * can be found in the LICENSE file. */ 'use strict'; /** * @file Utilities for PM2 * @author Alexandre Strzelewicz <as@unitech.io> * @project PM2 */ var p = require('path'); var treekill = require('../TreeKill'); var cst = require('../../constants.js'); /** * Description * @method exports * @param {} God * @return */ module.exports = function(God) { /** * Description * @method logAndGenerateError * @param {} err * @return NewExpression */ God.logAndGenerateError = function(err) { // Is an Error object if (err instanceof Error) { console.trace(err); return err; } // Is a JSON or simple string console.error(err); return new Error(err); }; /** * Utility functions * @method getProcesses * @return MemberExpression */ God.getProcesses = function() { return God.clusters_db; }; God.getFormatedProcess = function getFormatedProcesses(id) { if (God.clusters_db[id]) return { pid : God.clusters_db[id].process.pid, name : God.clusters_db[id].pm2_env.name, pm2_env : God.clusters_db[id].pm2_env, pm_id : God.clusters_db[id].pm2_env.pm_id }; return {}; }; /** * Get formated processes * @method getFormatedProcesses * @return {Array} formated processes */ God.getFormatedProcesses = function getFormatedProcesses() { var keys = Object.keys(God.clusters_db); var arr = new Array(); var kl = keys.length; for (var i = 0; i < kl; i++) { var key = keys[i]; if (!God.clusters_db[key]) continue; // Avoid _old type pm_ids if (isNaN(God.clusters_db[key].pm2_env.pm_id)) continue; arr.push({ pid : God.clusters_db[key].process.pid, name : God.clusters_db[key].pm2_env.name, pm2_env : God.clusters_db[key].pm2_env, pm_id : God.clusters_db[key].pm2_env.pm_id }) } return arr; }; /** * Description * @method findProcessById * @param {} id * @return ConditionalExpression */ God.findProcessById = function findProcessById(id) { return God.clusters_db[id] ? God.clusters_db[id] : null; }; /** * Description * @method findByName * @param {} name * @return arr */ God.findByName = function(name) { var db = God.clusters_db; var arr = []; if (name == 'all') { for (var key in db) { // Avoid _old_proc process style if (typeof(God.clusters_db[key].pm2_env.pm_id) === 'number') arr.push(db[key]); } return arr; } for (var key in db) { if (God.clusters_db[key].pm2_env.name == name || God.clusters_db[key].pm2_env.pm_exec_path == p.resolve(name)) { arr.push(db[key]); } } return arr; }; /** * Check if a process is alive in system processes * Return TRUE if process online * @method checkProcess * @param {} pid * @return */ God.checkProcess = function(pid) { if (!pid) return false; try { // Sending 0 signal do not kill the process process.kill(pid, 0); return true; } catch (err) { return false; } }; /** * Description * @method processIsDead * @param {} pid * @param {} cb * @return Literal */ God.processIsDead = function(pid, pm2_env, cb, sigkill) { if (!pid) return cb({type : 'param:missing', msg : 'no pid passed'}); var timeout = null; var kill_timeout = (pm2_env && pm2_env.kill_timeout) ? pm2_env.kill_timeout : cst.KILL_TIMEOUT; var mode = pm2_env.exec_mode; var timer = setInterval(function() { if (God.checkProcess(pid) === false) { console.log('pid=%d msg=process killed', pid); clearTimeout(timeout); clearInterval(timer); return cb(null, true); } console.log('pid=%d msg=failed to kill - retrying in %dms', pid, pm2_env.kill_retry_time); return false; }, pm2_env.kill_retry_time); timeout = setTimeout(function() { clearInterval(timer); if (sigkill) { console.log('Process with pid %d could not be killed', pid); return cb({type : 'timeout', msg : 'timeout'}); } else { console.log('Process with pid %d still alive after %sms, sending it SIGKILL now...', pid, kill_timeout); if (pm2_env.treekill !== true) { try { process.kill(parseInt(pid), 'SIGKILL'); } catch(e) { console.error('[SimpleKill][SIGKILL] %s pid can not be killed', pid, e.stack, e.message); } return God.processIsDead(pid, pm2_env, cb, true); } else { treekill(parseInt(pid), 'SIGKILL', function(err) { return God.processIsDead(pid, pm2_env, cb, true); }); } } }, kill_timeout); return false; }; /** * Description * @method killProcess * @param int pid * @param Object pm2_env * @param function cb * @return CallExpression */ God.killProcess = function(pid, pm2_env, cb) { if (!pid) return cb({msg : 'no pid passed or null'}); if (typeof(pm2_env.pm_id) === 'number' && (cst.KILL_USE_MESSAGE || pm2_env.shutdown_with_message == true)) { var proc = God.clusters_db[pm2_env.pm_id]; if (proc && proc.send) { try { proc.send('shutdown'); } catch (e) { console.error(`[AppKill] Cannot send "shutdown" message to ${pid}`) console.error(e.stack, e.message) } return God.processIsDead(pid, pm2_env, cb); } else { console.log(`[AppKill] ${pid} pid cannot be notified with send()`) } } if (pm2_env.treekill !== true) { try { process.kill(parseInt(pid), cst.KILL_SIGNAL); } catch(e) { console.error('[SimpleKill] %s pid can not be killed', pid, e.stack, e.message); } return God.processIsDead(pid, pm2_env, cb); } else { treekill(parseInt(pid), cst.KILL_SIGNAL, function(err) { return God.processIsDead(pid, pm2_env, cb); }); } }; /** * Description * @method getNewId * @return UpdateExpression */ God.getNewId = function() { return God.next_id++; }; /** * When a process is restarted or reloaded reset fields * to monitor unstable starts * @method resetState * @param {} pm2_env * @return */ God.resetState = function(pm2_env) { pm2_env.created_at = Date.now(); pm2_env.unstable_restarts = 0; pm2_env.prev_restart_delay = 0; }; };
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