Merge pull request #9 from ansible-semaphore/feature/env-variables

Extend credintials.json from environment

README.md

@@ -30,7 +30,7 @@ Install requirements:
 - mongodb & redis
 - Sudo access (this might change). To run jobs, this tool writes private keys to /root/.ssh and copies playbook directories to /root/.
 
-1. `cp lib/credentials.example.json lib/credentials.json` (<- make custom to your environment)
+1. Copy `lib/credentials.default.json` to `lib/credentials.json` and customise, or export relevant environment variables
 2. `bower install`
 3. `node bin/semaphore`
 
@@ -42,6 +42,22 @@ Email:			'admin@semaphore.local'
 Password:		'CastawayLabs'
 ```
 
+Environment Variables
+---------------------
+
+Use these variables to override the config.
+
+| Variable Name | Description            | Default Value                   |
+| ------------- | ---------------------- | ------------------------------- |
+| PORT          | Web Port               | `80`                            |
+| REDIS_PORT    | Redis Port             | `6379`                          |
+| REDIS_HOST    | Redis Hostname         | `127.0.0.1`                     |
+| REDIS_KEY     | Redis auth key         |                                 |
+| BUGSNAG_KEY   | Bugsnag API key        |                                 |
+| SMTP_USER     | Mandrill smtp username |                                 |
+| SMTP_PASS     | Mandrill smtp password |                                 |
+| MONGODB_URL   | Mongodb URL            | `mongodb://127.0.0.1/semaphore` |
+
 Note to Ansible guys
 --------------------
 

lib/config.js

@@ -1,14 +1,35 @@
-var fs = require('fs');
+var fs = require('fs'),
+	env = process.env;
 
 try {
-	var credentials = require('./credentials.json')
+	var credentials = require('./credentials.json');
 } catch (e) {
-	console.log("\nNo credentials.json File!\n")
-	process.exit(1);
+	if (!(process.env.MONGODB_URL && process.env.REDIS_HOST)) {
+		console.log("\nNo credentials.json File or env variables!\n");
+		process.exit(1);
+	} else {
+		credentials = require('./credentials.default.json');
+	}
 }
 
 exports.credentials = credentials;
 
+['redis_port', 'redis_host', 'redis_key', 'bugsnag_key', 'port'].forEach(function (key) {
+	if (env[key.toUpperCase()]) {
+		exports.credentials[key] = env[key.toUpperCase()];
+	}
+});
+
+if (env.SMTP_USER) {
+	exports.credentials.smtp.user = env.SMTP_USER;
+}
+if (env.SMTP_PASS) {
+	exports.credentials.smtp.pass = env.SMTP_PASS;
+}
+if (env.MONGODB_URL) {
+	exports.credentials.db = env.MONGODB_URL;
+}
+
 exports.version = require('../package.json').version;
 exports.hash = 'dirty';
 exports.production = process.env.NODE_ENV == "production";

lib/credentials.default.json

@@ -17,5 +17,5 @@
 			"auto_reconnect": true
 		}
 	},
-	"port": 3000
+	"port": 80
 }