Example 2: Authentication of a Message

Jump To … +

example_1_send_message.coffee example_2_authentication.coffee

¶

Example 2: Authentication of a Message

Prerequisites:
- RabbitMQ running
- Memcached running
```
AlchemyResource = require '../src/alchemy-resource'
```

Creating the Hello resource, whose path is ‘/hello’

hello_resource = new AlchemyResource.Resource("Hello", '/hello')

¶

The Hello resource implements show which takes a body and returns a string of the name
```
hello_resource.show = (context) ->
  {body: "Hello #{context.body.name}"}
```

The resource service is created which contains the resource

service = new AlchemyResource.ResourceService('hello.service', [hello_resource])

¶

Start the Resource Service
```
service.start()
.then( ->
```

Authentication would usually be handled by another service.

Set the caller with the version and permissions to access the show method on the Hello resource

  service.set_caller("cid", {
    version: 1
    permissions: {
      resources: {
        "Hello": {
          "show": "allow"
        }
      }
    }
  })
)
.then( ->

Set the session with the caller_id and the caller_version

  service.set_session("sid", {
    caller_id: "cid",
    caller_version : 1
  })
)
.then( ->

For authentication the session id needs to be sent as header

  service.send_message_to_resource({
    path: '/hello'
    body: JSON.stringify({ name: "Alice" })
    verb: "GET"
    headers: {"x-session-id": "sid"}
  })
)
.then( (response) ->
  console.log(response.body) # "Hello Alice"
)
.finally( ->
  service.stop()
)