com.ibm.internal.iotf.devicemgmt.handler.RebootRequestHandler.java Source code

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Here is the source code for com.ibm.internal.iotf.devicemgmt.handler.RebootRequestHandler.java

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/**
 *****************************************************************************
 Copyright (c) 2015-16 IBM Corporation and other Contributors.
 All rights reserved. This program and the accompanying materials
 are made available under the terms of the Eclipse Public License v1.0
 which accompanies this distribution, and is available at
 http://www.eclipse.org/legal/epl-v10.html
 Contributors:
 Mike Tran - Initial Contribution
 Sathiskumar Palaniappan - Initial Contribution
 *****************************************************************************
 *
 */
package com.ibm.internal.iotf.devicemgmt.handler;

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;

import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonPrimitive;
import com.ibm.internal.iotf.devicemgmt.ConcreteDeviceAction;
import com.ibm.internal.iotf.devicemgmt.ManagedClient;
import com.ibm.internal.iotf.devicemgmt.DMServerTopic;
import com.ibm.iotf.devicemgmt.DeviceAction;
import com.ibm.iotf.devicemgmt.DeviceActionHandler;
import com.ibm.internal.iotf.devicemgmt.ResponseCode;
import com.ibm.iotf.devicemgmt.resource.Resource;
import com.ibm.iotf.devicemgmt.resource.Resource.ChangeListenerType;
import com.ibm.iotf.util.LoggerUtility;

/**
 * Request handler for <code>MMqttClient.SERVER_TOPIC_INITIATE_REBOOT</code>
 * <br>Expected request message format
 * <blockquote>
 * {
 *    "reqId": "string"
 * }
 */
public class RebootRequestHandler extends DMRequestHandler implements PropertyChangeListener {

    private JsonElement reqId;

    public RebootRequestHandler(ManagedClient dmClient) {
        setDMClient(dmClient);
    }

    /**
     * Return Initiate reboot topic
     */
    @Override
    protected String getTopic() {
        DMServerTopic topic = this.getDMClient().getDMServerTopic();
        return topic.getInitiateRebootTopic();
    }

    /**
     * Subscribe to Initiate reboot topic
     */
    @Override
    protected void subscribe() {
        DMServerTopic topic = this.getDMClient().getDMServerTopic();
        subscribe(topic.getInitiateRebootTopic());
    }

    /**
     * unsubscribe Initiate reboot topic
     */
    @Override
    protected void unsubscribe() {
        DMServerTopic topic = this.getDMClient().getDMServerTopic();
        unsubscribe(topic.getInitiateRebootTopic());
    }

    /**
     * Handle initiate reboot request from IBM Watson IoT Platform
     */
    @Override
    protected void handleRequest(JsonObject jsonRequest) {
        final String METHOD = "handleRequest";

        DeviceAction action = getDMClient().getDeviceData().getDeviceAction();
        if (action == null || getDMClient().getActionHandler() == null) {
            // this should never happen
            JsonObject response = new JsonObject();
            response.add("reqId", jsonRequest.get("reqId"));
            response.add("rc", new JsonPrimitive(ResponseCode.DM_FUNCTION_NOT_IMPLEMENTED.getCode()));
            respond(response);
        } else {
            LoggerUtility.fine(CLASS_NAME, METHOD, " start reboot action ");
            // remove any other listener that are listening for the status update
            ((ConcreteDeviceAction) action).clearListener();
            ((ConcreteDeviceAction) action).addPropertyChangeListener(this);
            this.reqId = jsonRequest.get("reqId");
            DeviceActionHandler handler = getDMClient().getActionHandler();
            handler.handleReboot(action);
        }
    }

    @Override
    public void propertyChange(PropertyChangeEvent evt) {
        if (ConcreteDeviceAction.DEVICE_ACTION_STATUS_UPDATE.equals(evt.getPropertyName())) {
            try {
                ConcreteDeviceAction action = (ConcreteDeviceAction) evt.getNewValue();
                JsonObject response = action.toJsonObject();
                response.add("reqId", reqId);
                respond(response);
            } catch (Exception e) {
                LoggerUtility.warn(CLASS_NAME, "propertyChange", e.getMessage());
            }
        }
    }

}