org.dhara.portal.web.controllers.RestMonitorAPIController.java Source code

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Here is the source code for org.dhara.portal.web.controllers.RestMonitorAPIController.java

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/***********************************************************************************************************************
 *
 * Dhara- A Geoscience Gateway
 * ==========================================
 *
 * Copyright (C) 2013 by Dhara
 *
 ***********************************************************************************************************************
 *
 * 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.dhara.portal.web.controllers;

import org.apache.airavata.client.api.AiravataAPIInvocationException;
import org.dhara.portal.web.airavataService.AiravataClientAPIServiceImpl;
import org.dhara.portal.web.airavataService.MonitorMessage;
import org.dhara.portal.web.exception.PortalException;
import org.dhara.portal.web.helper.ExperimentDataHelper;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.List;
import java.util.Observable;
import java.util.Observer;

/**
 * Controller class for REST monitoring handling
 */
@Controller
public class RestMonitorAPIController implements Observer {

    private static List<MonitorMessage> events = new ArrayList<MonitorMessage>();
    private static String html = "";
    private AiravataClientAPIServiceImpl apiService = new AiravataClientAPIServiceImpl();
    private static String expId = "";

    @RequestMapping(value = { "/admin/monitorData/{experimentId}",
            "/admin/monitorData/{experimentId}/" }, method = RequestMethod.GET)
    @ResponseBody
    public String handleRequestInternal(@PathVariable String experimentId, Model model,
            HttpServletRequest httpServletRequest) throws Exception {

        String temp = "";
        if (expId.equalsIgnoreCase(experimentId)) {

            temp = html;
            html = "";
            events = new ArrayList<MonitorMessage>();

        }
        return temp;
    }

    //Register this class as the observer for workflow monitoring
    public String registerObserver(AiravataClientAPIServiceImpl airavataClientAPIService, Object[] ints,
            String workflowName) throws Exception {
        events = new ArrayList<MonitorMessage>();
        expId = "";
        apiService.setPortalConfiguration(airavataClientAPIService.getPortalConfiguration());
        apiService.setAiravataConfig(airavataClientAPIService.getAiravataConfig());
        apiService.addObserver(this);
        expId = apiService.executeExperiment(ints, workflowName);
        return expId;
    }

    //Start monitoring
    public void monitor() throws URISyntaxException, IOException, AiravataAPIInvocationException, PortalException {
        apiService.monitorWorkflow(expId);
    }

    //Update the data on the time of event receiving
    public void update(Observable o, Object arg) {
        MonitorMessage monitorMessage = ((ExperimentDataHelper) arg).getMonitorMessage();
        this.expId = ((ExperimentDataHelper) arg).getExperimentId();
        html = html + "<tr>" + "<td>" + monitorMessage.getTimestamp().toString() + "</td>" + "<td>"
                + monitorMessage.getComonent() + "</td>" + "<td>" + monitorMessage.getStatusText() + "</td>"
                + "<td>" + monitorMessage.getMesssage() + "</td>" + "</tr>";
    }
}