Package org.eclipse.orion.server.cf.commands

Source Code of org.eclipse.orion.server.cf.commands.GetLogCommand

/*******************************************************************************
* 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);
    }
  }
}
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