add logging for UI gekkos, fix askmike#972

core/workers/pipeline/messageHandlers/realtimeHandler.js

@@ -5,14 +5,12 @@ module.exports = cb => {
 
   return {
     message: message => {
+
       if(message.type === 'error') {
         cb(message.error);
         console.error(message.error);
       }
 
-      else if(message.type === 'log')
-        console.log(message.log);
-
       else
         cb(null, message);
 

logs/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore

web/routes/baseConfig.js

@@ -6,8 +6,8 @@ var config = {};
 //                          GENERAL SETTINGS
 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-config.silent = true;
-config.debug = false;
+config.silent = false;
+config.debug = true;
 
 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 //                       CONFIGURING TRADING ADVICE

web/routes/startGekko.js

@@ -4,6 +4,7 @@ const moment = require('moment');
 
 const pipelineRunner = promisify(require('../../core/workers/pipeline/parent'));
 const cache = require('../state/cache');
+const Logger = require('../state/logger');
 const broadcast = cache.get('broadcast');
 const apiKeyManager= cache.get('apiKeyManager');
 const gekkoManager = cache.get('gekkos');
@@ -49,6 +50,15 @@ module.exports = function *() {
 
   let errored = false;
 
+  var logType = type;
+  if(logType === 'leech') {
+    if(config.trader && config.trader.enabled)
+      logType = 'tradebot';
+    else
+      logType = 'papertrader';
+  }
+  const logger = new Logger(logType);
+
   console.log('Gekko', id, 'started');
 
   const child = pipelineRunner(mode, config, (err, event) => {
@@ -102,6 +112,8 @@ module.exports = function *() {
       }
       broadcast(wsEvent);
       return;
+    } else if(event.log) {
+      logger.write(event.log);
     }
 
     let updates = {};

web/state/logger.js

@@ -0,0 +1,40 @@
+const fs = require('fs');
+const moment = require('moment');
+const _ = require('lodash');
+
+const BASEPATH = __dirname + '/../../logs/';
+
+const Logger = function(type) {
+
+  const now = moment().utc().format('YYYY-MM-DD-HH-mm');
+  this.fileName = `${now}-UTC-${type}.log`;
+
+  this.writing = false;
+  this.queue = [];
+
+  _.bindAll(this);
+}
+
+Logger.prototype.write = function(line) {
+  if(!this.writing) {
+    this.writing = true;
+    fs.appendFile(
+      BASEPATH + this.fileName,
+      line + '\n',
+      this.handleWriteCallback
+    );
+  } else
+    this.queue.push(line);
+}
+
+Logger.prototype.handleWriteCallback = function(err) {
+  if(err)
+    console.error(`ERROR WRITING LOG FILE ${this.fileName}:`, err);
+
+  this.writing = false;
+
+  if(_.size(this.queue))
+    this.write(this.queue.shift())
+}
+
+module.exports = Logger;