Computation Service

This project is just an example of how to use some Akka libraries in practice. It is based on the Distributed Worker Template.

• Akka Java 8 Actors and FSM
• Akka (Remote) Cluster
• Akka HTTP
• MongoDB
• Guava Graph / Network
• ANTLR

How it works

First you have to create a Structure, which consists of a graph of Elements. Each Element takes a set of Definitions, which are similar to variables. Then you create a Computation with an expression in reference to a Structure and an Element. Let's have a look at the following example.

Structure

                A1
             v      v
          B1          B3
       v      v          v
    C1          C2         C3

Definitions

A1: x=1
B1: y=10
B2: y=20
C1: z=100
C2: z=200
C3: z=300

Computation

Element: B1
Expression: 25 + z - y
Result: 25 + (100+200) - 10 = 315

As soon as the workers have processed the result, the Computation will be updated.