add initial heap dump endpoint if enabled

.gitignore

@@ -20,3 +20,4 @@ static/bower_components/
 coverage/
 
 npm-debug.log
+*.heapsnapshot

app.js

@@ -63,6 +63,18 @@ function create (env, ctx) {
     res.sendFile(__dirname + '/swagger.yaml');
   });
 
+  if (env.settings.isEnabled('dumps')) {
+    var heapdump = require('heapdump');
+    app.get('/api/v2/dumps/start', function (req, res) {
+      var path = new Date().toISOString() + '.heapsnapshot';
+      path = _.replace(path, ':', '-');
+      console.info('writing dump to', path);
+      heapdump.writeSnapshot(path);
+      res.send('wrote dump to ' + path);
+    });
+  }
+
+
   //app.get('/package.json', software);
 
   // define static server

package.json

@@ -62,6 +62,7 @@
     "express-extension-to-accept": "0.0.2",
     "forever": "~0.15.2",
     "git-rev": "git://github.com/bewest/git-rev.git",
+    "heapdump": "^0.3.7",
     "jquery": "^2.1.4",
     "jsonwebtoken": "^7.1.9",
     "lodash": "^4.16.4",