136 lines
4.4 KiB
Java
136 lines
4.4 KiB
Java
/*******************************************************************************
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* Copyright (c) 2013 Ziver
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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******************************************************************************/
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package zutil.net.nio.worker.grid;
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import java.io.IOException;
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import java.util.LinkedList;
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import java.util.Queue;
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import zutil.io.MultiPrintStream;
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import zutil.net.nio.NioClient;
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import zutil.net.nio.message.GridMessage;
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import zutil.net.nio.worker.ThreadedEventWorker;
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import zutil.net.nio.worker.WorkerDataEvent;
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/**
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* This class is the client part of the grid.
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* It connects to a grid server and requests new job.
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* And then sends back the result to the server.
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*
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* @author Ziver
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*/
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@SuppressWarnings({ "unchecked", "rawtypes" })
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public class GridClient extends ThreadedEventWorker {
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private static LinkedList<GridJob> jobQueue;
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private static GridThread thread;
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private static NioClient network;
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/**
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* Creates a new GridClient object and registers itself at the server
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* and sets itself as a worker in NioClient
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*
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* @param thread the Thread interface to run for the jobs
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* @param network the NioClient to use to communicate to the server
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*/
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public GridClient(GridThread thread, NioClient network){
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jobQueue = new LinkedList<GridJob>();
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GridClient.thread = thread;
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GridClient.network = network;
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}
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/**
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* Starts up the client and a couple of GridThreads.
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* And registers itself as a worker in NioClient
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* @throws IOException
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*/
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public void initiate() throws IOException{
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network.setDefaultWorker(this);
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network.send(new GridMessage(GridMessage.REGISTER));
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for(int i=0; i<Runtime.getRuntime().availableProcessors() ;i++){
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Thread t = new Thread(thread);
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t.start();
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}
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}
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@Override
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public void messageEvent(WorkerDataEvent e) {
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// ignores other messages than GridMessage
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if(e.data instanceof GridMessage){
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GridMessage msg = (GridMessage)e.data;
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switch(msg.messageType()){
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// Receive data from Server
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case GridMessage.INIT_DATA:
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thread.setInitData(msg.getData());
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break;
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case GridMessage.COMP_DATA:
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jobQueue.add(new GridJob(msg.getJobQueueID(), (Queue)msg.getData()));
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break;
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}
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}
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}
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/**
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* Register whit the server that the job is done
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*
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* @param jobID is the job id
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* @param correct if the answer was right
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* @param result the result of the computation
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* @throws IOException
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*/
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public static void jobDone(int jobID, boolean correct, Object result) throws IOException{
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if(correct)
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network.send(new GridMessage(GridMessage.COMP_SUCCESSFUL, jobID, result));
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else
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network.send(new GridMessage(GridMessage.COMP_INCORRECT, jobID, result));
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}
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/**
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* Registers with the server that there was an
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* error when computing this job
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*
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* @param jobID is the job id
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*/
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public static void jobError(int jobID){
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try{
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network.send(new GridMessage(GridMessage.COMP_SUCCESSFUL, jobID));
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}catch(Exception e){e.printStackTrace();}
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}
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/**
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* @return a new job to compute
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* @throws IOException
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*/
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public static synchronized GridJob getNextJob() throws IOException{
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if(jobQueue.isEmpty()){
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network.send(new GridMessage(GridMessage.NEW_DATA));
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while(jobQueue.isEmpty()){
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try{Thread.sleep(100);}catch(Exception e){}
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}
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}
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MultiPrintStream.out.println("Starting job");
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return jobQueue.poll();
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}
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}
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