org.robokind.api.messaging.services.DefaultServiceClient Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of org.robokind.api.messaging Show documentation
There is a newer version: 0.9.5
Show newest version
/*
 * Copyright 2012 Hanson Robokind LLC.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.robokind.api.messaging.services;

import java.util.logging.Level;
import java.util.logging.Logger;
import org.robokind.api.common.playable.AbstractPlayable;
import org.robokind.api.messaging.MessageAsyncReceiver;
import org.robokind.api.messaging.MessageSender;

/**
 *
 * @author Matthew Stevenson 
 */
public class DefaultServiceClient 
        extends AbstractPlayable implements RemoteServiceClient{
    private final static Logger theLogger = 
            Logger.getLogger(DefaultServiceClient.class.getName());
    
    private MessageSender myCommandSender;
    private MessageSender myConfigSender;
    private MessageAsyncReceiver myErrorReceiver;
    private ServiceCommandFactory myCommandFactory;
    private String myLocalServiceId;
    private String myRemoteServiceId;
            
    public DefaultServiceClient(
            String localId, String remoteId,
            MessageSender commandSender,
            MessageSender configSender,
            MessageAsyncReceiver errorReceiver,
            ServiceCommandFactory commandFactory){
        if(localId == null || remoteId == null){
            throw new NullPointerException();
        }
        myLocalServiceId = localId;
        myRemoteServiceId = remoteId;
        myCommandSender = commandSender;
        myConfigSender = configSender;
        myErrorReceiver = errorReceiver;
        myCommandFactory = commandFactory;
    }
    
    @Override
    public void initialize(Conf config){
        if(config == null){
            throw new NullPointerException();
        }if(myConfigSender == null){
            theLogger.warning("Unable to send config, Config Sender is null.");
            return;
        }
        myConfigSender.notifyListeners(config);
    }
    
    @Override
    public boolean onStart(long time) {
        send(ServiceCommand.START);
        return true;
    }

    @Override
    public boolean onPause(long time) {
        send(ServiceCommand.PAUSE);
        return true;
    }

    @Override
    public boolean onResume(long time) {
        send(ServiceCommand.RESUME);
        return true;
    }
    
    @Override
    public boolean onComplete(long time){
        send(ServiceCommand.STOP);
        return true;
    }

    @Override
    public boolean onStop(long time) {
        send(ServiceCommand.STOP);
        return true;
    }
    
    protected void send(String commandStr){
        if(myCommandSender == null || myCommandFactory == null){
            theLogger.warning("Unable to send command. "
                    + " Command Sender or Command Factory is null.");
            return;
        }
        ServiceCommand command = myCommandFactory.create(
                myLocalServiceId, myRemoteServiceId, commandStr);
        theLogger.log(Level.INFO, "Sending Service Command [{0}] - "
                + "source: {1}, dest: {2}, time: {3}.", 
                new Object[]{command.getCommand(), 
                    command.getSourceId(), 
                    command.getDestinationId(), 
                    command.getTimestampMillisecUTC()});
        myCommandSender.notifyListeners(command);
    }

    @Override
    public void setCommandSender(MessageSender sender) {
        myCommandSender = sender;
    }

    @Override
    public void setConfigSender(MessageSender sender) {
        myConfigSender = sender;
    }

    @Override
    public void setErrorReceiver(MessageAsyncReceiver receiver) {
        myErrorReceiver = receiver;
    }

    @Override
    public void setCommandFactory(ServiceCommandFactory factory) {
        myCommandFactory = factory;
    }

    @Override
    public String getClientId() {
        return myLocalServiceId;
    }

    @Override
    public String getHostId() {
        return myRemoteServiceId;
    }
}