Add optional support for rollbar

Closes #150
Logs messages of severity ERROR or higher

NEWS.md

@@ -1,6 +1,10 @@
 1.9.0 - 2014-MM-DD
 ------------------
 
+New features:
+
+ - Add optional support for rollbar (#137)
+
 Enhancements:
 
  * Allow configuring log_format (#131)

app.js

@@ -31,7 +31,16 @@ log4js_config = {
   ],
   replaceConsole:true
 };
+
+if ( global.settings.rollbar ) {
+  log4js_config.appenders.push({
+    type: __dirname + "/app/models/log4js_rollbar.js",
+    options: global.settings.rollbar
+  });
+}
+
 log4js.configure(log4js_config);
+global.logger = log4js.getLogger();
 
  
 // kick off controller
@@ -42,3 +51,7 @@ app.listen(global.settings.node_port, global.settings.node_host, function() {
       global.settings.node_host + ":" + global.settings.node_port +
       " with base_url " + global.settings.base_url); 
 });
+
+process.on('uncaughtException', function(err) {
+  logger.error('Uncaught exception: ' + err.stack);
+});

app/models/log4js_rollbar.js

@@ -0,0 +1,49 @@
+var rollbar = require("rollbar");
+
+/**
+ * Rollbar Appender. Sends logging events to Rollbar using node-rollbar 
+ *
+ * @param config object with rollbar configuration data
+ * {
+ *   token: 'your-secret-token',
+ *   options: node-rollbar options
+ * }
+ */
+function rollbarAppender(config) {
+
+  var opt = config.options;
+	rollbar.init(opt.token, opt.options);
+	
+	return function(loggingEvent) {
+/*
+For logger.trace('one','two','three'):
+{ startTime: Wed Mar 12 2014 16:27:40 GMT+0100 (CET),
+  categoryName: '[default]',
+  data: [ 'one', 'two', 'three' ],
+  level: { level: 5000, levelStr: 'TRACE' },
+  logger: { category: '[default]', _events: { log: [Object] } } }
+*/
+
+    // Levels:
+    // TRACE  5000
+    // DEBUG 10000
+    // INFO  20000
+    // WARN  30000
+    // ERROR 40000
+    // FATAL 50000
+    //
+    // We only log error and higher errors
+    //
+    if ( loggingEvent.level.level < 40000 ) return;
+
+    rollbar.reportMessage(loggingEvent.data);
+	};
+}
+
+function configure(config) {
+	return rollbarAppender(config);
+}
+
+exports.name      = "rollbar";
+exports.appender  = rollbarAppender;
+exports.configure = configure;

config/environments/production.js.example

@@ -40,3 +40,11 @@ module.exports.tableCacheMax = 8192;
 module.exports.tableCacheMaxAge = 1000*60*10;
 // Temporary directory, make sure it is writable by server user
 module.exports.tmpDir = '/tmp';
+// Optional rollbar support
+module.exports.rollbar = {
+    token: 'secret',
+    // See http://github.com/rollbar/node_rollbar#configuration-reference
+    options: {
+      handler: 'inline'
+    }
+}

config/environments/staging.js.example

@@ -40,3 +40,11 @@ module.exports.tableCacheMax = 8192;
 module.exports.tableCacheMaxAge = 1000*60*10;
 // Temporary directory, make sure it is writable by server user
 module.exports.tmpDir = '/tmp';
+// Optional rollbar support
+module.exports.rollbar = {
+    token: 'secret',
+    // See http://github.com/rollbar/node_rollbar#configuration-reference
+    options: {
+      handler: 'inline'
+    }
+}

npm-shrinkwrap.json

@@ -122,6 +122,14 @@
         }
       }
     },
+    "rollbar": {
+      "version": "0.3.1",
+      "dependencies": {
+        "node-uuid": {
+          "version": "1.4.1"
+        }
+      }
+    },
     "redis": {
       "version": "0.7.1"
     },

package.json

@@ -26,7 +26,8 @@
         "oauth-client": "0.2.0",
         "node-uuid":"1.3.3",
         "lru-cache":"~2.2.2",
-        "log4js": "~0.6.10"
+        "log4js": "~0.6.10",
+        "rollbar": "~0.3.1"
     },
     "devDependencies": {
         "redis": "0.7.1",