Implementation of a Reliable Load Balanced Publisher-Subscriber Service

SDLE First Assignment of group T03G14.

Group members:

1. Catarina Pires ([email protected])
2. Diogo Costa ([email protected])
3. Francisco Colino ([email protected])
4. Pedro Gonçalo Correia ([email protected])

Description

In this project, we present a reliable load balanced publisher-subscriber service on top of the ZeroMQ library. Our service enforces exactly-once semantics and is robust to faults, except in some rare circumstances.

The service supports four operations: subscribe, unsubscribe, get, and put, which can be executed by a client. We consider that we designed and implemented this system correctly, and its features are working as intended.

For more information about the project, please refer to the project report.

Compile instructions:

To compile the source code run:
./gradlew build

Run instructions:

Proxy

To launch a proxy run:
./gradlew proxy --args="<IP>:<PORT>"

Server

To launch a server run:
./gradlew server --args="<IP>:<PORT>"

Client

To launch a client run:
./gradlew client --args="<ID> subscribe <TOPIC>" or
./gradlew client --args="<ID> unsubscribe <TOPIC>" or
./gradlew client --args="<ID> put <TOPIC> MESSAGE_PATH" or
./gradlew client --args="<ID> get <TOPIC>"