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README.md

Application: Load External Config

Demonstrates how to manage provider destination hostnames outside of the Openmix PHP. App uses Fusion Custom (AKA Pulse Load) to pull in a list of destinations linked to unique site names. Then, if a subdomain is appended to the Openmix name, it checks the subdomain against the site names in the file and modifies the destination returned.

Openmix Application Library

Cedexis Openmix applications give you dynamic, flexible, and automatic control over where your traffic is routed so that your business goals are achieved. Openmix applications are programmed in JavaScript, a commonly used server-side language accessible to most web programmers and network administrators.

These Openmix Application scripts are used by specialized DNS servers to respond to DNS requests based on the logic in the scripts. Deployment of the scripts is done via our customer portal or web services API.

Learn how to use the library to make your own applications in the wiki.

Validating the Code

The validate-js.sh script looks for possible errors in the application and test code. You must have Java installed for it to run. It executes both the Google Closure compiler and JSLint (jslint4java).

Here's an example where Google Closure compiler detects a misspelled property name, and JSLint detects that we forgot to comment-out a console print statement. We'd want to fix these issues before uploading the Openmix app.

$ ./validate-js.sh

Validating with Google Closure Compiler

app.js:171: WARNING - Property geo_default_on_marketasdf never defined on all_reasons
                    decision_reasons.push(all_reasons.geo_default_on_marketasdf);
                                          ^

0 error(s), 1 warning(s), 65.1% typed

Validating with JSLint

jslint:app.js:17:13:'console' was used before it was defined.

Running Unit Tests

Unit tests are a great way to make sure your application runs properly. Given an adequate understanding of the Openmix API, you can write tests to simulate most runtime conditions.

Unit tests are found in the test/tests.js file.

There are two different ways to execute the unit tests. The simplest is to open the test/test.html file in your browser (e.g. file:///path/to/test/test.html). Google Chrome works well for this. You can use the Chrome Developer Tools to debug any failed tests.

Another way to run the unit tests is on the command line using Karma Runner and PhantomJS. This requires that you have Node.js installed. It's a little more work to set up, but probably worthwhile in the long run if you anticipate writing a lot of Openmix code.

You can run the run-tests.sh script provided to execute the tests in Karma Runner. Here's an example:

$ ./run-tests.sh

Running Openmix application unit tests

INFO [karma]: Karma v0.10.10 server started at http://localhost:9876/
INFO [launcher]: Starting browser PhantomJS
INFO [PhantomJS 1.9.7 (Mac OS X)]: Connected on socket KHoK6W4HH8YDwj9EHCSk
LOG: Object{requireProvider: requireProvider}
LOG: Object{request: Object{getProbe: getProbe}, getProbe: getProbe, respond: respond, setTTL: setTTL, setReasonCode: setReasonCode}
LOG: Object{request: Object{getProbe: getProbe}, getProbe: getProbe, respond: respond, setTTL: setTTL, setReasonCode: setReasonCode}
...
PhantomJS 1.9.7 (Mac OS X): Executed 12 of 12 SUCCESS (0.075 secs / 0.017 secs)

All unit tests passed

Installing Node.js

Node.js is used by Karma Runner to run and execute your test code.

On Mac OS X

There are two good options for installing Node on Mac OS X. You can download an installer from nodejs.org. Or via Homebrew.

With Homebrew,

$ brew install node

On Linux (Ubuntu)

Installing Node.js on Ubuntu is simple, but requires an extra package that users sometimes miss:

$ sudo apt-get install nodejs nodejs-legacy

Installing Karma and other dependencies

With Node.js installed you can use npm, the package manager for Node.js, to install Karma Runner and other dependencies. The project directory contains a package.json file, which npm uses to download and install software locally.

From the directory containing package.json:

$ npm install