Distributed Computing & Data Management Assignment

A MongoDB must be running. In development we are looking at 127.0.0.1:27017, in any other environment, the environment variable MONGO_URL has to be defined.

Tasks

• rake db:seed Import some data in the database
• rake console Interactive console in the environment of the application (Access to database)
• rake daoclient:exec Interactive prompt to use the DSL of the DAO
• rake daoclinet:exec [file] Interpret the file with the DSL
• rake restclient:exec <service_URL> Same as DAO client but for a webservice
• rake restclient:exec <service_URL> [file]

DAO Client

Interactive client

rake daoclient:exec

Script client

rake daoclient:exec [file] -> Note: One example could be found in the 'examples' directory

Rest Client

Interactive client

rake restclient:exec <service_URL>

Script client

rake restclient:exec <service_URL> [file]

Language

• GETALL
• GET <id>
• FINDBYNAME name
• CREATE attr1, "value1", attr2, "value2", …
• UPDATE <id>, attr1, "value1", …
• DELETE <id>

The keywork 'last' can substitute an ID and it represents the last item which has been get/create i.e.:

• GET <id>
• UPDATE last, name, "New name"
• DELETE last

Note: The application uses an interface to GNU readline to provide an history in the commands you run.

API Server

To run the server: rackup -p $PORT

API Documentation

Go to the API documentation

Some explanations about the file of the project

• Gemfile: Define the dependencies of the application
• Gemfile.lock: Generated by the command bundle install, contains the dependency tree
• Procfile: Define how to run the server on a PaaS like Appsdeck or Heroku
• Rakefile: Define some "batch" tasks which can be run
• config.ru: Specify a standard way to launch the application as a Rack-compliant web service
• config/mongoid.yml: Configuration of mongoid, the gem used to connect to a MongoDB database