Automated load of talib and tulind if available locally

Author: cmroche

core/talib.js

@@ -1,7 +1,15 @@
-var talib = require("talib");
 var semver = require("semver");
 var _ = require('lodash');
 
+// validate that talib is installed, if not we'll throw an excepion which will
+// prevent further loading or out outside this module
+try {
+    var talib = require("talib");
+} catch (e) {
+    module.exports = null;
+    return;
+}
+
 var talibError = 'Gekko was unable to configure talib indicator:\n\t';
 var talibGTEv103 = semver.gte(talib.version, '1.0.3');
 

core/tulind.js

@@ -1,7 +1,15 @@
-var tulind = require("tulind");
 var semver = require("semver");
 var _ = require('lodash');
 
+// validate that talib is installed, if not we'll throw an excepion which will
+// prevent further loading or out outside this module
+try {
+    var tulind = require("tulind");
+} catch (e) {
+    module.exports = null;
+    return;
+}
+
 var tulindError = 'Gekko was unable to configure Tulip Indicators:\n\t';
 
 // Wrapper that executes a tulip indicator

plugins/tradingAdvisor/baseTradingMethod.js

@@ -9,44 +9,17 @@ var ENV = util.gekkoEnv();
 var mode = util.gekkoMode();
 var startTime = util.getStartTime();
 
-if(config.tradingAdvisor.talib.enabled) {
-  // verify talib is installed properly
-  var pluginHelper = require(dirs.core + 'pluginUtil');
-  var pluginMock = {
-    slug: 'tradingAdvisor',
-    dependencies: [{
-      module: 'talib',
-      version: config.tradingAdvisor.talib.version
-    }]
-  };
-
-  var cannotLoad = pluginHelper.cannotLoad(pluginMock);
-  if(cannotLoad)
-    util.die(cannotLoad);
-
-  var talib = require(dirs.core + 'talib');
+var talib = require(dirs.core + 'talib');
+if(talib == null) {
+  log.warn('TALIB indicators could not be loaded, they will be unavailable.');
 }
 
-if(config.tradingAdvisor.tulind.enabled) {
-  // verify talib is installed properly
-  var pluginHelper = require(dirs.core + 'pluginUtil');
-  var pluginMock = {
-    slug: 'tradingAdvisor',
-    dependencies: [{
-      module: 'tulind',
-      version: config.tradingAdvisor.tulind.version
-    }]
-  };
-
-  var cannotLoad = pluginHelper.cannotLoad(pluginMock);
-  if(cannotLoad)
-    util.die(cannotLoad);
-
-  var tulind = require(dirs.core + 'tulind');
+var tulind = require(dirs.core + 'tulind');
+if(tulind == null) {
+  log.warn('TULIP indicators could not be loaded, they will be unavailable.');
 }
 
 var indicatorsPath = dirs.methods + 'indicators/';
-
 var indicatorFiles = fs.readdirSync(indicatorsPath);
 var Indicators = {};
 

sample-config.js

@@ -35,15 +35,7 @@ config.tradingAdvisor = {
   method: 'MACD',
   candleSize: 1,
   historySize: 3,
-  adapter: 'sqlite',
-  talib: {
-    enabled: false,
-    version: '1.0.2'
-  },
-  tulind: {
-    enabled: false,
-    version: '0.8.7'
-  }
+  adapter: 'sqlite'
 }
 
 // Exponential Moving Averages settings:

web/routes/baseConfig.js

@@ -14,14 +14,6 @@ config.debug = true;
 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 config.tradingAdvisor = {
-  talib: {
-    enabled: require('../supportsTalib'),
-    version: '1.0.2'
-  },
-  tulind: {
-    enabled: require('../supportsTulip'),
-    version: '0.8.7'
-  }
 }
 
 config.candleWriter = {