setup stdout and file streams for logging to, but disable file in default and development

Author: ducas

config/default.json

@@ -1,8 +1,8 @@
 {
     "kafka": {
         "zkConnect": "192.168.33.10:2181",
-        "producerSeed" : "0x9747b28c",
-        "clientId" : {
+        "producerSeed": "0x9747b28c",
+        "clientId": {
             "socket": "kafka-socket-proxy",
             "http": "kafka-http-proxy"
         },
@@ -13,7 +13,15 @@
     },
     "logging": {
         "logName": "kafka-http-proxy",
-        "level": "trace"
+        "stdout": {
+            "level": "trace",
+            "enabled": true
+        },
+        "file": {
+            "path": "./kafka-http-proxy.log",
+            "level": "trace",
+            "enabled": false
+        }
     },
     "cache": {
         "timeout": 600

config/development.json

@@ -1,8 +1,14 @@
 {
-	"kafka": {
-		"zkConnect": "192.168.33.10:2181"
+    "kafka": {
+        "zkConnect": "192.168.33.10:2181"
     },
     "logging": {
-        "level" : "debug"
+        "stdout": {
+            "level": "debug"
+        },
+        "file": {
+            "level": "debug",
+            "enabled": false
+        }
     }
 }

logger.js

@@ -1,15 +1,31 @@
 var bunyan = require('bunyan');
 var config = require('./config');
+var PrettyStream = require('bunyan-prettystream');
+ 
+var prettyStdOut = new PrettyStream();
+prettyStdOut.pipe(process.stdout);
 
-var logger = new bunyan.createLogger({
-        name: config.logging.logName,
-        src:true,
-        streams: [
-            {
-                level: config.logging.level,
-                stream : process.stdout
-            }]
+var streams = [];
+if (config.logging.stdout && config.logging.stdout.enabled) {
+    streams.push({
+        level: config.logging.stdout.level,
+        type: 'raw',
+        stream : prettyStdOut
+    });
+}
+if (config.logging.file && config.logging.file.enabled) {
+    streams.push({
+        level: config.logging.file.level,
+        path: config.logging.file.path,
+        type: 'file'
     });
+}
+
+var logger = new bunyan.createLogger({
+    name: config.logging.logName,
+    src: true,
+    streams: streams
+});
 
 module.exports = {
     logger : logger,

package.json

@@ -7,6 +7,7 @@
   "dependencies": {
     "body-parser": "^1.14.1",
     "bunyan": "^1.5.1",
+    "bunyan-prettystream": "^0.1.3",
     "config-node": "^1.2.2",
     "express": "^4.13.3",
     "kafka-node": "https://github.com/hoppity/kafka-node/tarball/master",