From 651c2b76ff3db39cefd1542d6f4c19d8686dfb85 Mon Sep 17 00:00:00 2001 From: Martin Date: Sun, 22 Dec 2019 17:29:25 +0100 Subject: Implement executor (#65) --- .../pl/edu/mimuw/cloudatlas/agent/EventBus.java | 7 +++++ .../pl/edu/mimuw/cloudatlas/agent/Executor.java | 35 ++++++++++++++++++++++ .../java/pl/edu/mimuw/cloudatlas/agent/Module.java | 10 +++++++ 3 files changed, 52 insertions(+) create mode 100644 src/main/java/pl/edu/mimuw/cloudatlas/agent/EventBus.java create mode 100644 src/main/java/pl/edu/mimuw/cloudatlas/agent/Executor.java create mode 100644 src/main/java/pl/edu/mimuw/cloudatlas/agent/Module.java (limited to 'src/main/java/pl') diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/EventBus.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/EventBus.java new file mode 100644 index 0000000..47cb1ff --- /dev/null +++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/EventBus.java @@ -0,0 +1,7 @@ +package pl.edu.mimuw.cloudatlas.agent; + +/* + * The EventBus routes messages sent between Modules. + */ +public class EventBus { +} diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/Executor.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/Executor.java new file mode 100644 index 0000000..0651a9b --- /dev/null +++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/Executor.java @@ -0,0 +1,35 @@ +package pl.edu.mimuw.cloudatlas.agent; + +import java.util.concurrent.LinkedBlockingQueue; + +import pl.edu.mimuw.cloudatlas.agent.message.AgentMessage; + +/* + * Queues messages sent to a particular module and ensures they are eventually + * handled. + */ +public class Executor implements Runnable { + private Module module; + private LinkedBlockingQueue events; + + public Executor(Module module) { + this.module = module; + this.events = new LinkedBlockingQueue(); + } + + public void run() { + while (!Thread.currentThread().interrupted()) { + try { + AgentMessage event = events.take(); + module.handle(event); + } catch (InterruptedException e) { + System.out.println("Executor interrupted. Exiting loop."); + break; + } + } + } + + public void addMessage(AgentMessage event) throws InterruptedException { + events.put(event); + } +} diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/Module.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/Module.java new file mode 100644 index 0000000..46df31b --- /dev/null +++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/Module.java @@ -0,0 +1,10 @@ +package pl.edu.mimuw.cloudatlas.agent; + +import pl.edu.mimuw.cloudatlas.agent.message.AgentMessage; + +/* + * A Module is a (potentially stateful) event handler. + */ +public abstract class Module { + public abstract void handle(AgentMessage event); +} -- cgit v1.2.3