tusharkaley / dos_twitter

dos_twitter

Run tests

Navigate to the dos_twitter/twitter folder Run the following command mix test test/* --seed 0 --trace

These are the building blocks of this project:

• TwitterClasses.Supervisor: Supervisor
• TwitterClasses.Core: Client/ Twitter User
• TwitterClasses.Tracker: Server. It also keeps track of number of tweets and is responsible for shutdown of the system
• TwitterClasses.Simulator: Genserver module is responsible for periodic triggering of tweets and retweets

proj4.exs: This is the module which accepts user arguments and can be used to trigger everything.

This accepts following arguments

• Number of users
• Number of messages

The simualtor periodically triggers tweet sending from the users. A user can follow other twitter users and keep track of their activity. When a user sends out a tweet, the followers are notified,

• If the follower is connected, the tweet is delivered live
• If the follower is disconnected, the tweets are stored in a notifications table. When the user comes online they can view these tweets A user can query a
• hashtag: All the tweets containing that particular hashtag are delivered
• mention: All the tweets in which the user was mentioned are delivered

Tweet generation

• Tweets are generated using the generate_tweet utils function which generates tweets with a equal probability of containing a hashtag and user mentions

Exit condition: When the specified number of tweets are sent from each core user, the tracker sends the terminate message and we stop the supervisor.

We have written tests for the following functionalities:

Tests

1. Add a user
2. Delete a user
3. Follow a user
4. Query using hashtag
5. Query using mentions
6. Get all tweets
7. Get my notifications
8. Deliver tweets to the tweeter’s followers if they are alive
9. Save tweets to the tweeter’s followers’ table if they are alive