Metrics collection framework

.travis.yml

@@ -11,6 +11,7 @@ script:
 
 after_success:
   - grunt publish
+  - grunt metrics
 
 email:
   on_failure: change

Gruntfile.js

@@ -87,17 +87,7 @@ module.exports = function(grunt) {
       done();
     });
   });
-  grunt.registerTask('bench', function() {
-    var done = this.async();
-
-    var runner = childProcess.fork('./bench/handlebars', [], {stdio: 'inherit'});
-    runner.on('close', function(code) {
-      if (code != 0) {
-        grunt.fatal(code + ' tests failed');
-      }
-      done();
-    });
-  });
+  grunt.registerTask('bench', ['metrics']);
 
   grunt.registerTask('build', ['jshint', 'parser', 'dist-dir', 'concat', 'uglify', 'test']);
   grunt.registerTask('default', 'build');

bench/index.js

@@ -0,0 +1,14 @@
+var fs = require('fs');
+
+var metrics = fs.readdirSync(__dirname);
+metrics.forEach(function(metric) {
+  if (metric === 'index.js' || !/(.*)\.js$/.test(metric)) {
+    return;
+  }
+
+  var name = RegExp.$1;
+  metric = require('./' + name);
+  if (metric instanceof Function) {
+    module.exports[name] = metric;
+  }
+});

tasks/metrics.js

@@ -0,0 +1,63 @@
+var _ = require('underscore'),
+    async = require('async'),
+    git = require('./util/git'),
+    Keen = require('keen.io'),
+    metrics = require('../bench');
+
+module.exports = function(grunt) {
+  grunt.registerTask('metrics', function() {
+    var done = this.async(),
+        execName = grunt.option('name'),
+        events = {},
+
+        projectId = process.env.KEEN_PROJECTID,
+        writeKey = process.env.KEEN_WRITEKEY,
+        keen;
+
+    if (!execName && projectId && writeKey) {
+      keen = Keen.configure({
+        projectId: projectId,
+        writeKey: writeKey
+      });
+    }
+
+    async.each(_.keys(metrics), function(name, complete) {
+        if (/^_/.test(name) || (execName && name !== execName)) {
+          return complete();
+        }
+
+        metrics[name](grunt, function(data) {
+          events[name] = data;
+          complete();
+        });
+      },
+      function() {
+        if (!keen) {
+          return done();
+        }
+
+        emit(keen, events, function(err, res) {
+          if (err) {
+            throw err;
+          }
+
+          grunt.log.writeln('Metrics recorded.');
+          done();
+        });
+      });
+  });
+};
+function emit(keen, collections, callback) {
+  git.commitInfo(function(err, info) {
+    _.each(collections, function(collection) {
+      _.each(collection, function(event) {
+        if (info.tagName) {
+          event.tag = info.tagName;
+        }
+        event.sha = info.head;
+      });
+    });
+
+    keen.addEvents(collections, callback);
+  });
+}