titan

A stellar API framework built on top of Argo.

Titan: Stellar APIs

A stellar API framework built on top of Argo. Titan will provide any API management functionality needed by modern API developers.

  1. CORS Management
  2. Compression
  3. Logging
  4. API Resource Definition
  5. Interoperable with Argo Packages

Grab this package off npm using the command.

$ npm install titan

The basic Titan server looks like this.

var titan = require('titan');
 
titan()
  .use(function(handle) {
    handle('response', function(envnext) {
      env.response.body = {'text': 'Hello World'};
      env.response.statusCode = 200;
      env.response.setHeader('Content-Type', 'application/json');
      next(env);  
    });  
  })
  .listen(3000);
### handleFunction(type, [options], callback)
  • type: 'request' or 'response'

  • options: Mostly used for internal purposes. Optional.

  • callback(env, next): A request or response callback. env is an environment context that is passed to every handler, and next is a reference to the next function in the pipeline.

When the handler is complete and wishes to pass to the next function in the pipeline, it must call next(env).

### use(handleFunction)

handleFunction is used to set up request and response handlers.

titan()
  //For every request add 'X-Custom-Header' with value 'Yippee!' 
  .use(function(handle) {
    handle('request', function(envnext) {
      env.request.headers['X-Custom-Header'] = 'Yippee!';
      next(env);
    });
  })
### use(package)

Alias for include(package).

### route(path, [options], handleFunction)
  • path: a regular expression used to match HTTP Request URI path.

  • options: an object with a methods property to filter HTTP methods (e.g., { methods: ['GET','POST'] }). Optional.

  • handleFunction: Same as in use.

Example:

titan()
  .route('^/greeting$', function(handle) {
    handle('request', function(envnext) {
      env.response.statusCode = 200;
      env.response.headers = { 'Content-Type': 'text/plain' };
      env.response.body = 'Hello World!';
 
      next(env);
    });
  })

Method filter built on top of route. del corresponds to the DELETE method.

Example:

titan()
  .get('^/puppies$', function(handle) {
    handle('request', function(envnext) {
      env.response.body = JSON.stringify([{name: 'Sparky', breed: 'Fox Terrier' }]);
      next(env);
    });
  })
### map(path, [options], titanSegmentFunction)

map is used to delegate control to sub-Argo instances based on a request URI path.

  • path: a regular expression used to match the HTTP Request URI path.

  • options: an object with a methods property to filter HTTP methods (e.g., { methods: ['GET','POST'] }). Optional.

  • titanSegmentFunction: a function that is passed an instance of argo for additional setup.

Example:

titan()
  .map('^/payments', function(server) {
    server
      .use(oauth)
      .target('http://backend_payment_server');
  })
### allow([options])

allow enables CORS support for your titan server.

NOTE: To enable CORS for any domain provide an asterisk (*) as the argument to this function.

  • options: an object with:
    • a methods property to filter HTTP methods (e.g., { methods: ['GET','POST'] }).
    • a headers property to filter when HTTP Headers are allowed to be included in the request.(e.g. {headers: ['x-tenant-id']}).
    • a maxAge property to indicate how long a preflight request can be cached. (e.g. {maxAge: '43200'}).
    • an origins property to filter which domains can access the resource (e.g. { origins: ['http://foo.example'] }).

Example:

titan()
  .allow('*')
titan()
  .allow({
    methods: ['DELETE', 'PUT', 'PATCH'],
    origins: ['http://foo.example'],
    maxAge: '432000',
    headers: ['x-tenant-id']  
  })
### compress()

compress enables gzip compression for your titan server.

Example:

titan()
  .compress()
### logger()

logger turns on a Common Log Format logger for your titan server.

Example:

titan()
  .logger()
### add(resource, args)

add adds an additional argo-resource package to your titan server. See the argo-resource repo for details on creating resources.

var HelloResource = require('./hello_resource');
 
titan()
  .add(HelloResource);
### load(pathToResources)
  • pathToResource: String path to directory containing argo resource files.

load loads a directory of argo-resource files without having to specifiy each one individually.

var HelloResource = require('./hello_resource');
 
titan()
  .load(path.join(__dirname, 'resources'));

Have and issue? Simply file it with github issues. This project has been stable for about a year, but issues do arise from time to time.

Want to contribute? Simply fork the project, make your changes, and file a pull request. We'll review within two to three days of receiving and provide feedback accordingly.

Copyright (c) 2014-2015 Apigee and Contributors
 
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