Embark blockchain logs when running standalone

When running `embark blockchain` followed by `embark run` previously, logs generated in the standalone `embark blockchain` process were black boxed and not accessible to the main Embark process.

This is fixed by creating a client IPC connection in the `embark blockchain` process that connects to the IPC server connection running in `embark run`. The connection is made by way of polling `ipc.connect` and continues polling even after a connection is made in case `embark run` is killed and restarted without restarting `embark blockchain`.

`LogHandler` was introduced to extrapolate functionality used in `ProcessLauncher` that needed to also be used in the standalone blockchain process. It also caps the number of logs that are stored in memory per process by a constant value defined in `constants.json`.

A `blockchain_listener` was module was created (and run inside of `embark run`) that listens for logs emitted by the `embark blockchain` client IPC and runs them through the `LogHandler`. Additionally, this module registers the API endpoints needed to handle requests for blockchain process logs in the cockpit (which were 404’ing before).

# Conflicts:
#	lib/modules/blockchain_process/blockchain.js

cmd/cmd_controller.js

@@ -32,7 +32,7 @@ class EmbarkController {
 
   blockchain(env, client) {
     this.context = [constants.contexts.blockchain];    
-    return require('../lib/modules/blockchain_process/blockchain.js')(this.config.blockchainConfig, client, env).run();
+    return require('../lib/modules/blockchain_process/blockchain.js')(this.config.blockchainConfig, client, env, null, null, this.logger, this.events, true).run();
   }
 
   simulator(options) {
@@ -132,6 +132,7 @@ class EmbarkController {
         engine.startService("processManager");
         engine.startService("coreProcess");
         engine.startService("loggerApi");
+        engine.startService("blockchainListener");
         engine.startService("serviceMonitor");
         engine.startService("libraryManager");
         engine.startService("codeRunner");
@@ -437,73 +438,50 @@ class EmbarkController {
   }
 
   scaffold(options) {
+
     this.context = options.context || [constants.contexts.scaffold];
+    options.onlyCompile = true;
 
     const Engine = require('../lib/core/engine.js');
     const engine = new Engine({
       env: options.env,
-      client: options.client,
-      locale: options.locale,
       version: this.version,
-      embarkConfig: 'embark.json',
+      embarkConfig: options.embarkConfig || 'embark.json',
-      interceptLogs: false,
       logFile: options.logFile,
-      logLevel: options.logLevel,
+      context: this.context
-      events: options.events,
-      logger: options.logger,
-      config: options.config,
-      plugins: options.plugins,
-      context: this.context,
-      webpackConfigName: options.webpackConfigName
     });
 
+
     async.waterfall([
-      function initEngine(callback) {
+      function (callback) {
         engine.init({}, callback);
       },
-      function startServices(callback) {
+      function (callback) {
-        engine.startService("scaffolding");
-        callback();
-      },
-      function generateContract(callback) {
-        engine.events.request('scaffolding:generate:contract', options, function(err, file) {
-          // Add contract file to the manager
-          engine.events.request('config:contractsFiles:add', file);
-          callback();
-        });
-      },
-      function initEngineServices(callback) {
         let pluginList = engine.plugins.listPlugins();
         if (pluginList.length > 0) {
           engine.logger.info(__("loaded plugins") + ": " + pluginList.join(", "));
         }
-        engine.startService("processManager");
-        engine.startService("libraryManager");
-        engine.startService("codeRunner");
-        engine.startService("web3");
-        engine.startService("deployment", {onlyCompile: true});
 
-        callback();
+        engine.startService("processManager");
-      },
+        engine.startService("serviceMonitor");
-      function deploy(callback) {
+        engine.startService("libraryManager");
-        engine.events.request('deploy:contracts', function(err) {
+        engine.startService("pipeline");
-          callback(err);
+        engine.startService("deployment", {onlyCompile: true});
-        });
+        engine.startService("web3");
-      },
+        engine.startService("scaffolding");
-      function generateUI(callback) {
+
-        engine.events.request("scaffolding:generate:ui", options, () => {
+        engine.events.request('deploy:contracts', callback);
-          callback();
-        });
       }
-    ], function(err) {
+    ], (err) => {
       if (err) {
-        engine.logger.error(__("Error generating the UI: "));
+        engine.logger.error(err.message);
-        engine.logger.error(err.message || err);
+        engine.logger.info(err.stack);
-        process.exit(1);
+      } else {
+        engine.events.request("scaffolding:generate", options, () => {
+          engine.logger.info(__("finished generating the UI").underline);
+          process.exit();
+        });
       }
-      engine.logger.info(__("finished generating the UI").underline);
-      engine.logger.info(__("To see the result, execute {{cmd}} and go to /{{contract}}.html", {cmd: 'embark run'.underline, contract: options.contract}));
-      process.exit();
     });
   }
 

lib/constants.json

@@ -54,6 +54,7 @@
     "gasLimit": 6000000
   },
   "logs": {
-    "logPath": ".embark/logs/"
+    "logPath": ".embark/logs/",
+    "maxLogLength": 1500
   }
 }

lib/core/engine.js

@@ -78,7 +78,8 @@ class Engine {
       "codeCoverage": this.codeCoverageService,
       "scaffolding": this.scaffoldingService,
       "coreProcess": this.coreProcessService,
-      "loggerApi": this.loggerApiService
+      "loggerApi": this.loggerApiService,
+      "blockchainListener": this.blockchainListenerService
     };
 
     let service = services[serviceName];
@@ -92,6 +93,12 @@ class Engine {
     return service.apply(this, [options]);
   }
 
+  blockchainListenerService(_options){
+    this.registerModule('blockchain_listener', {
+      ipc: this.ipc
+    });
+  }
+
   coreProcessService(_options){
     this.registerModule('core_process', {
       events: this.events

lib/core/processes/processLauncher.js

@@ -2,6 +2,7 @@ const child_process = require('child_process');
 const constants = require('../../constants');
 const path = require('path');
 const utils = require('../../utils/utils');
+const LogHandler = require('../../utils/logHandler');
 
 let processCount = 1;
 class ProcessLauncher {
@@ -30,6 +31,7 @@ class ProcessLauncher {
     this.exitCallback = options.exitCallback;
     this.embark = options.embark;
     this.logs = [];
+    this.logHandler = new LogHandler({events: this.events, logger: this.logger, processName: this.name, silent: this.silent});
 
     this.subscriptions = {};
     this._subscribeToMessages();
@@ -51,7 +53,7 @@ class ProcessLauncher {
         self.logger.error(msg.error);
       }
       if (msg.result === constants.process.log) {
-        return self._handleLog(msg);
+        return self.logHandler.handleLog(msg);
       }
       if (msg.event) {
         return self._handleEvent(msg);
@@ -93,44 +95,6 @@ class ProcessLauncher {
     );
   }
 
-  // Translates logs from the child process to the logger
-  _handleLog(msg) {
-    // Sometimes messages come in with line breaks, so we need to break them up accordingly.
-    let processedMessages = [];
-
-    // Ensure that `msg.message` is an array, so we process this consistently. Sometimes it
-    // is an Array, sometimes it is a string.
-    if(typeof msg.message === 'string') {
-      processedMessages = [msg.message];
-    } else {
-      msg.message.forEach(message => {
-        let lines = message.split("\n");
-        lines.forEach(line => processedMessages.push(line));
-      });
-    }
-
-    const timestamp = new Date().getTime();
-
-    processedMessages.forEach((message) => {
-      const log = {
-        msg: message,
-        msg_clear: message.stripColors,
-        logLevel: msg.logLevel,
-        name: this.name,
-        timestamp
-      };
-      const id = this.logs.push(log) - 1;
-      this.events.emit(`process-log-${this.name}`, id, log);
-      if (this.silent && msg.type !== 'error') {
-        return;
-      }
-      if (this.logger[msg.type]) {
-        return this.logger[msg.type](utils.normalizeInput(message));
-      }
-      this.logger.debug(utils.normalizeInput(message));
-    });
-  }
-
   // Handle event calls from the child process
   _handleEvent(msg) {
     const self = this;

lib/modules/blockchain_listener/index.js

@@ -0,0 +1,54 @@
+const LogHandler = require('../../utils/logHandler');
+
+const PROCESS_NAME = 'blockchain';
+
+class BlockchainListener {
+  constructor(embark, options) {
+    this.embark = embark;
+    this.events = embark.events;
+    this.logger = embark.logger;
+    this.ipc = options.ipc;
+    this.logHandler = new LogHandler({events: this.events, logger: this.logger, processName: PROCESS_NAME, silent: true});
+
+    if (this.ipc.isServer()) {
+      this._listenToLogs();
+    }
+
+    this._registerApi();
+  }
+
+  _listenToLogs() {
+    this.ipc.on('blockchain:log', ({logLevel, message}) => {
+      this.logHandler.handleLog({logLevel, message});
+    });
+  }
+
+  _registerApi() {
+    // This route is overriden by `processLauncher` when the blockchain
+    // process is launched (ie when not in blockchain standalone mode).
+    // The order is determined by the order in which the engine starts
+    // it's services, with `blockchain_process` coming before `web3`.
+    const apiRoute = '/embark-api/process-logs/' + PROCESS_NAME;
+    this.embark.registerAPICall(
+      'ws',
+      apiRoute,
+      (ws, _req) => {
+        this.events.on('process-log-' + PROCESS_NAME, function (id, log) {
+          ws.send(JSON.stringify(Object.assign(log, {id})), () => {});
+        });
+      }
+    );
+    this.embark.registerAPICall(
+      'get',
+      apiRoute,
+      (req, res) => {
+        let limit = parseInt(req.query.limit, 10);
+        if (!Number.isInteger(limit)) limit = 0;
+        const result = this.logHandler.logs.map((log, id) => Object.assign(log, {id})).slice(limit);
+        res.send(JSON.stringify(result));
+      }
+    );
+  }
+}
+
+module.exports = BlockchainListener;

lib/modules/blockchain_process/blockchain.js

@@ -1,27 +1,31 @@
 const async = require('async');
 const {spawn, exec} = require('child_process');
-
 const fs = require('../../core/fs.js');
 const constants = require('../../constants.json');
 const utils = require('../../utils/utils.js');
-
 const GethClient = require('./gethClient.js');
 const ParityClient = require('./parityClient.js');
 const DevFunds = require('./dev_funds.js');
-
 const proxy = require('./proxy');
 const Ipc = require('../../core/ipc');
 
 const {defaultHost, dockerHostSwap} = require('../../utils/host');
+const Logger = require('../../core/logger');
 
-/*eslint complexity: ["error", 36]*/
+// time between IPC connection attmpts (in ms)
+const IPC_CONNECT_INTERVAL = 2000;
+
+/*eslint complexity: ["error", 38]*/
 var Blockchain = function(userConfig, clientClass) {
   this.userConfig = userConfig;
   this.env = userConfig.env || 'development';
   this.isDev = userConfig.isDev;
   this.onReadyCallback = userConfig.onReadyCallback || (() => {});
   this.onExitCallback = userConfig.onExitCallback;
+  this.logger = userConfig.logger || new Logger({logLevel: 'debug'});
+  this.events = userConfig.events;
   this.proxyIpc = null;
+  this.isStandalone = userConfig.isStandalone;
 
   let defaultWsApi = clientClass.DEFAULTS.WS_API;
   if (this.isDev) defaultWsApi = clientClass.DEFAULTS.DEV_WS_API;
@@ -75,29 +79,62 @@ var Blockchain = function(userConfig, clientClass) {
 
   const spaceMessage = 'The path for %s in blockchain config contains spaces, please remove them';
   if (this.config.datadir && this.config.datadir.indexOf(' ') > 0) {
-    console.error(__(spaceMessage, 'datadir'));
+    this.logger.error(__(spaceMessage, 'datadir'));
     process.exit();
   }
   if (this.config.account.password && this.config.account.password.indexOf(' ') > 0) {
-    console.error(__(spaceMessage, 'account.password'));
+    this.logger.error(__(spaceMessage, 'account.password'));
     process.exit();
   }
   if (this.config.genesisBlock && this.config.genesisBlock.indexOf(' ') > 0) {
-    console.error(__(spaceMessage, 'genesisBlock'));
+    this.logger.error(__(spaceMessage, 'genesisBlock'));
     process.exit();
   }
   this.initProxy();
   this.client = new clientClass({config: this.config, env: this.env, isDev: this.isDev});
+
+  this.initStandaloneProcess();
 };
 
-Blockchain.prototype.initProxy = function() {
+/**
+ * Polls for a connection to an IPC server (generally this is set up
+ * in the Embark process). Once connected, any logs logged to the 
+ * Logger will be shipped off to the IPC server. In the case of `embark
+ * run`, the BlockchainListener module is listening for these logs.
+ * 
+ * @returns {void}
+ */
+Blockchain.prototype.initStandaloneProcess = function () {
+  if (this.isStandalone) {
+    // on every log logged in logger (say that 3x fast), send the log
+    // to the IPC serve listening (only if we're connected of course)
+    this.events.on('log', (logLevel, message) => {
+      if (this.ipc.connected) {
+        this.ipc.request('blockchain:log', {logLevel, message});
+      }
+    });
+
+    this.ipc = new Ipc({ipcRole: 'client'});
+
+    // Wait for an IPC server to start (ie `embark run`) by polling `.connect()`.
+    // Do not kill this interval as the IPC server may restart (ie restart 
+    // `embark run` without restarting `embark blockchain`)
+    setInterval(() => {
+      if (!this.ipc.connected) {
+        this.ipc.connect(() => {});
+      }
+    }, IPC_CONNECT_INTERVAL);
+  }
+};
+
+Blockchain.prototype.initProxy = function () {
   if (this.config.proxy) {
     this.config.rpcPort += constants.blockchain.servicePortOnProxy;
     this.config.wsPort += constants.blockchain.servicePortOnProxy;
   }
 };
 
-Blockchain.prototype.setupProxy = async function() {
+Blockchain.prototype.setupProxy = async function () {
   if (!this.proxyIpc) this.proxyIpc = new Ipc({ipcRole: 'client'});
 
   let wsProxy;
@@ -108,7 +145,7 @@ Blockchain.prototype.setupProxy = async function() {
   [this.rpcProxy, this.wsProxy] = await Promise.all([proxy.serve(this.proxyIpc, this.config.rpcHost, this.config.rpcPort, false), wsProxy]);
 };
 
-Blockchain.prototype.shutdownProxy = function() {
+Blockchain.prototype.shutdownProxy = function () {
   if (!this.config.proxy) {
     return;
   }
@@ -117,21 +154,21 @@ Blockchain.prototype.shutdownProxy = function() {
   if (this.wsProxy) this.wsProxy.close();
 };
 
-Blockchain.prototype.runCommand = function(cmd, options, callback) {
+Blockchain.prototype.runCommand = function (cmd, options, callback) {
-  console.log(__("running: %s", cmd.underline).green);
+  this.logger.info(__("running: %s", cmd.underline).green);
   if (this.config.silent) {
     options.silent = true;
   }
   return exec(cmd, options, callback);
 };
 
-Blockchain.prototype.run = function() {
+Blockchain.prototype.run = function () {
   var self = this;
-  console.log("===============================================================================".magenta);
+  this.logger.info("===============================================================================".magenta);
-  console.log("===============================================================================".magenta);
+  this.logger.info("===============================================================================".magenta);
-  console.log(__("Embark Blockchain using %s", self.client.prettyName.underline).magenta);
+  this.logger.info(__("Embark Blockchain using %s", self.client.prettyName.underline).magenta);
-  console.log("===============================================================================".magenta);
+  this.logger.info("===============================================================================".magenta);
-  console.log("===============================================================================".magenta);
+  this.logger.info("===============================================================================".magenta);
 
   if (self.client.name === 'geth') this.checkPathLength();
 
@@ -157,35 +194,35 @@ Blockchain.prototype.run = function() {
       });
     },
     function getMainCommand(next) {
-      self.client.mainCommand(address, function(cmd, args) {
+      self.client.mainCommand(address, function (cmd, args) {
         next(null, cmd, args);
       }, true);
     }
   ], function(err, cmd, args) {
     if (err) {
-      console.error(err.message);
+      self.logger.error(err.message);
       return;
     }
     args = utils.compact(args);
 
     let full_cmd = cmd + " " + args.join(' ');
-    console.log(__("running: %s", full_cmd.underline).green);
+    self.logger.info(__("running: %s", full_cmd.underline).green);
     self.child = spawn(cmd, args, {cwd: process.cwd()});
 
     self.child.on('error', (err) => {
       err = err.toString();
-      console.error('Blockchain error: ', err);
+      self.logger.error('Blockchain error: ', err);
       if (self.env === 'development' && err.indexOf('Failed to unlock') > 0) {
-        console.error('\n' + __('Development blockchain has changed to use the --dev option.').yellow);
+        self.logger.error('\n' + __('Development blockchain has changed to use the --dev option.').yellow);
-        console.error(__('You can reset your workspace to fix the problem with').yellow + ' embark reset'.cyan);
+        self.logger.error(__('You can reset your workspace to fix the problem with').yellow + ' embark reset'.cyan);
-        console.error(__('Otherwise, you can change your data directory in blockchain.json (datadir)').yellow);
+        self.logger.error(__('Otherwise, you can change your data directory in blockchain.json (datadir)').yellow);
       }
     });
 
     // TOCHECK I don't understand why stderr and stdout are reverted.
     // This happens with Geth and Parity, so it does not seems a client problem
     self.child.stdout.on('data', (data) => {
-      console.error(`${self.client.name} error: ${data}`);
+      this.logger.info(`${self.client.name} error: ${data}`);
     });
 
     self.child.stderr.on('data', async (data) => {
@@ -194,7 +231,7 @@ Blockchain.prototype.run = function() {
         self.readyCalled = true;
         if (self.isDev) {
           self.fundAccounts((err) => {
-            if (err) console.error('Error funding accounts', err);
+            if (err) this.logger.error('Error funding accounts', err);
           });
         }
         if (self.config.proxy) {
@@ -202,7 +239,7 @@ Blockchain.prototype.run = function() {
         }
         self.readyCallback();
       }
-      console.log(`${self.client.name}: ${data}`);
+      this.logger.info(`${self.client.name}: ${data}`);
     });
 
     self.child.on('exit', (code) => {
@@ -212,14 +249,14 @@ Blockchain.prototype.run = function() {
       } else {
         strCode = 'with no error code (manually killed?)';
       }
-      console.error(self.client.name + ' exited ' + strCode);
+      self.logger.error(self.client.name + ' exited ' + strCode);
       if (self.onExitCallback) {
         self.onExitCallback();
       }
     });
 
     self.child.on('uncaughtException', (err) => {
-      console.error('Uncaught ' + self.client.name + ' exception', err);
+      self.logger.error('Uncaught ' + self.client.name + ' exception', err);
       if (self.onExitCallback) {
         self.onExitCallback();
       }
@@ -235,7 +272,7 @@ Blockchain.prototype.fundAccounts = function(cb) {
   });
 };
 
-Blockchain.prototype.readyCallback = function() {
+Blockchain.prototype.readyCallback = function () {
   if (this.onReadyCallback) {
     this.onReadyCallback();
   }
@@ -244,25 +281,25 @@ Blockchain.prototype.readyCallback = function() {
   }
 };
 
-Blockchain.prototype.kill = function() {
+Blockchain.prototype.kill = function () {
   this.shutdownProxy();
   if (this.child) {
     this.child.kill();
   }
 };
 
-Blockchain.prototype.checkPathLength = function() {
+Blockchain.prototype.checkPathLength = function () {
   let dappPath = fs.dappPath('');
   if (dappPath.length > 66) {
-    // console.error is captured and sent to the console output regardless of silent setting
+    // this.logger.error is captured and sent to the console output regardless of silent setting
-    console.error("===============================================================================".yellow);
+    this.logger.error("===============================================================================".yellow);
-    console.error("===========> ".yellow + __('WARNING! ÐApp path length is too long: ').yellow + dappPath.yellow);
+    this.logger.error("===========> ".yellow + __('WARNING! ÐApp path length is too long: ').yellow + dappPath.yellow);
-    console.error("===========> ".yellow + __('This is known to cause issues with starting geth, please consider reducing your ÐApp path\'s length to 66 characters or less.').yellow);
+    this.logger.error("===========> ".yellow + __('This is known to cause issues with starting geth, please consider reducing your ÐApp path\'s length to 66 characters or less.').yellow);
-    console.error("===============================================================================".yellow);
+    this.logger.error("===============================================================================".yellow);
   }
 };
 
-Blockchain.prototype.isClientInstalled = function(callback) {
+Blockchain.prototype.isClientInstalled = function (callback) {
   let versionCmd = this.client.determineVersionCommand();
   this.runCommand(versionCmd, {}, (err, stdout, stderr) => {
     if (err || !stdout || stderr.indexOf("not found") >= 0 || stdout.indexOf("not found") >= 0) {
@@ -341,7 +378,7 @@ Blockchain.prototype.initDevChain = function(callback) {
   });
 };
 
-Blockchain.prototype.initChainAndGetAddress = function(callback) {
+Blockchain.prototype.initChainAndGetAddress = function (callback) {
   const self = this;
   let address = null;
   const ALREADY_INITIALIZED = 'already';
@@ -358,7 +395,7 @@ Blockchain.prototype.initChainAndGetAddress = function(callback) {
     function listAccounts(next) {
       self.runCommand(self.client.listAccountsCommand(), {}, (err, stdout, _stderr) => {
         if (err || stdout === undefined || stdout.indexOf("Fatal") >= 0) {
-          console.log(__("no accounts found").green);
+          this.logger.info(__("no accounts found").green);
           return next();
         }
         let firstAccountFound = self.client.parseListAccountsCommandResultToAddress(stdout);
@@ -366,7 +403,7 @@ Blockchain.prototype.initChainAndGetAddress = function(callback) {
           console.log(__("no accounts found").green);
           return next();
         }
-        console.log(__("already initialized").green);
+        this.logger.info(__("already initialized").green);
         address = firstAccountFound;
         next(ALREADY_INITIALIZED);
       });
@@ -376,7 +413,7 @@ Blockchain.prototype.initChainAndGetAddress = function(callback) {
       if (!self.config.genesisBlock || self.client.name === 'parity') {
         return next();
       }
-      console.log(__("initializing genesis block").green);
+      this.logger.info(__("initializing genesis block").green);
       self.runCommand(self.client.initGenesisCommmand(), {}, (err, _stdout, _stderr) => {
         next(err);
       });
@@ -398,9 +435,9 @@ Blockchain.prototype.initChainAndGetAddress = function(callback) {
   });
 };
 
-var BlockchainClient = function(userConfig, clientName, env, onReadyCallback, onExitCallback) {
+var BlockchainClient = function(userConfig, clientName, env, onReadyCallback, onExitCallback, logger, events, isStandalone) {
   if ((userConfig === {} || JSON.stringify(userConfig) === '{"enabled":true}') && env !== 'development') {
-    console.log("===> " + __("warning: running default config on a non-development environment"));
+    logger.info("===> " + __("warning: running default config on a non-development environment"));
   }
   // if client is not set in preferences, default is geth
   if (!userConfig.ethereumClientName) userConfig.ethereumClientName = 'geth';
@@ -416,7 +453,7 @@ var BlockchainClient = function(userConfig, clientName, env, onReadyCallback, on
     case 'parity':
       clientClass = ParityClient;
       break;
-
+    return new Blockchain({blockchainConfig, client: GethCommands, env, isDev, onReadyCallback, onExitCallback, logger, events, isStandalone});
     default:
       console.error(__('Unknow client "%s". Please use one of the following: %s', userConfig.ethereumClientName, 'geth, parity'));
       process.exit();

lib/utils/logHandler.js

@@ -0,0 +1,71 @@
+const utils = require('./utils');
+
+// define max number of logs to keep in memory for this process
+// to prevent runaway memory leak
+const MAX_LOGS = require('../constants').logs.maxLogLength;
+
+class LogHandler {
+  constructor({events, logger, processName, silent}) {
+    this.events = events;
+    this.logger = logger;
+    this.processName = processName;
+    this.silent = silent;
+
+    this.logs = [];
+    this.removedCount = 0;
+  }
+
+  /**
+   * Servers as an interception of logs, normalises the message output and
+   * adds metadata (timestamp, id) the data,
+   * stores the log in memory, then sends it to the logger for output. Max
+   * number of logs stored in memory is capped by MAX_LOGS
+   * @param {Object} msg Object containing the log message (msg.message)
+   * 
+   * @returns {void} 
+   */
+  handleLog(msg) {
+    if(!msg) return;
+
+    // Sometimes messages come in with line breaks, so we need to break them up accordingly.
+    let processedMessages = [];
+
+    // Ensure that `msg.message` is an array, so we process this consistently. Sometimes it
+    // is an Array, sometimes it is a string.
+    if(typeof msg.message === 'string') {
+      processedMessages = [msg.message];
+    } else {
+      msg.message.forEach(message => {
+        let lines = message.split("\n");
+        lines.forEach(line => processedMessages.push(line));
+      });
+    }
+
+    const timestamp = new Date().getTime();
+
+    processedMessages.forEach((message) => {
+      const log = {
+        msg: message,
+        msg_clear: message.stripColors,
+        logLevel: msg.logLevel,
+        name: this.processName,
+        timestamp
+      };
+      if(this.logs.length >= MAX_LOGS){
+        this.logs.shift();
+        this.removedCount++;
+      }
+      const id = this.logs.push(log) - 1 + this.removedCount;
+      this.events.emit(`process-log-${this.processName}`, id, log);
+      if (this.silent && msg.type !== 'error') {
+        return;
+      }
+      if (this.logger[msg.type]) {
+        return this.logger[msg.type](utils.normalizeInput(message));
+      }
+      this.logger.debug(utils.normalizeInput(message));
+    });
+  }
+}
+
+module.exports = LogHandler;