org.eclipse.orion.server.cf.commands.GetLogCommand.java Source code

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Here is the source code for org.eclipse.orion.server.cf.commands.GetLogCommand.java

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/*******************************************************************************
 * Copyright (c) 2014 IBM Corporation and others 
 * 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:
 * IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.orion.server.cf.commands;

import java.net.URI;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.httpclient.methods.GetMethod;
import org.eclipse.core.runtime.*;
import org.eclipse.orion.server.cf.objects.Log;
import org.eclipse.orion.server.cf.objects.Target;
import org.eclipse.orion.server.cf.utils.HttpUtil;
import org.eclipse.orion.server.core.ServerStatus;
import org.eclipse.osgi.util.NLS;
import org.json.JSONArray;
import org.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class GetLogCommand extends AbstractCFCommand {

    private final Logger logger = LoggerFactory.getLogger("org.eclipse.orion.server.cf"); //$NON-NLS-1$

    private String commandName;
    private String appName;
    private String instanceNo;
    private String logName;
    private String baseRequestLocation;

    public GetLogCommand(Target target, String appName, String instanceNo, String logName,
            String baseRequestLocation) {
        super(target);
        this.commandName = "Get App Log"; //$NON-NLS-1$
        this.appName = appName;
        this.instanceNo = instanceNo;
        this.logName = logName;
        this.baseRequestLocation = baseRequestLocation;
    }

    public ServerStatus _doIt() {
        try {
            URI targetURI = URIUtil.toURI(target.getUrl());

            // Find the app
            GetAppCommand getAppCommand = new GetAppCommand(target, this.appName);
            IStatus getAppStatus = getAppCommand.doIt();
            if (!getAppStatus.isOK())
                return (ServerStatus) getAppStatus;

            String appUrl = getAppCommand.getApp().getAppJSON().getString("url");

            // check if crash log
            String computedInstanceNo = instanceNo;
            if ("Last Crash".equals(instanceNo)) {
                String crashedInstancesUrl = appUrl + "/crashes";
                URI crashedInstancesURI = targetURI.resolve(crashedInstancesUrl);

                GetMethod getCrashedInstancesMethod = new GetMethod(crashedInstancesURI.toString());
                HttpUtil.configureHttpMethod(getCrashedInstancesMethod, target);

                ServerStatus getStatus = HttpUtil.executeMethod(getCrashedInstancesMethod);
                if (!getStatus.isOK()) {
                    return getStatus;
                }

                String response = getStatus.getJsonData().getString("response");
                JSONArray crashedInstances = new JSONArray(response);
                if (crashedInstances.length() > 0) {
                    JSONObject crashedInstance = crashedInstances.getJSONObject(crashedInstances.length() - 1);
                    computedInstanceNo = crashedInstance.getString("instance");
                }
            }

            String instanceLogsAppUrl = appUrl + "/instances/" + computedInstanceNo + "/files/logs";
            if (logName != null) {
                instanceLogsAppUrl += ("/" + logName);
            }

            URI instanceLogsAppURI = targetURI.resolve(instanceLogsAppUrl);

            GetMethod getInstanceLogMethod = new GetMethod(instanceLogsAppURI.toString());
            HttpUtil.configureHttpMethod(getInstanceLogMethod, target);

            ServerStatus getInstanceLogStatus = HttpUtil.executeMethod(getInstanceLogMethod);
            if (!getInstanceLogStatus.isOK()) {
                return getInstanceLogStatus;
            }

            String response = getInstanceLogStatus.getJsonData().optString("response");

            JSONObject jsonResp = new JSONObject();
            Log log = new Log(appName, logName);
            log.setContents(response);
            log.setLocation(new URI(baseRequestLocation));
            jsonResp.put(instanceNo, log.toJSON());

            return new ServerStatus(Status.OK_STATUS, HttpServletResponse.SC_OK, jsonResp);
        } catch (Exception e) {
            String msg = NLS.bind("An error occured when performing operation {0}", commandName); //$NON-NLS-1$
            logger.error(msg, e);
            return new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_INTERNAL_SERVER_ERROR, msg, e);
        }
    }
}