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

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

/*******************************************************************************
* 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 java.util.ArrayList;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.httpclient.methods.DeleteMethod;
import org.apache.commons.httpclient.methods.GetMethod;
import org.eclipse.core.runtime.*;
import org.eclipse.orion.server.cf.CFProtocolConstants;
import org.eclipse.orion.server.cf.manifest.v2.InvalidAccessException;
import org.eclipse.orion.server.cf.manifest.v2.ManifestParseTree;
import org.eclipse.orion.server.cf.objects.App;
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 DeleteApplicationCommand extends AbstractCFCommand {
  private final Logger logger = LoggerFactory.getLogger("org.eclipse.orion.server.cf"); //$NON-NLS-1$

  private String commandName;
  private App application;

  private String appName;

  public DeleteApplicationCommand(Target target, App app) {
    super(target);
    this.commandName = "Delete the application";
    this.application = app;
  }

  @Override
  protected ServerStatus _doIt() {
    try {

      /* read deploy parameters */
      JSONObject appMetadata = null;
      JSONObject appEntity = null;

      URI targetURI = URIUtil.toURI(target.getUrl());

      /* get application details */
      String appsUrl = target.getSpace().getCFJSON().getJSONObject("entity").getString("apps_url"); //$NON-NLS-1$//$NON-NLS-2$
      URI appsURI = targetURI.resolve(appsUrl);
      GetMethod getAppsMethod = new GetMethod(appsURI.toString());
      HttpUtil.configureHttpMethod(getAppsMethod, target);
      getAppsMethod.setQueryString("q=name:" + appName + "&inline-relations-depth=1"); //$NON-NLS-1$ //$NON-NLS-2$

      ServerStatus appsStatus = HttpUtil.executeMethod(getAppsMethod);
      if (!appsStatus.isOK())
        return appsStatus;

      JSONObject apps = appsStatus.getJsonData();
      if (!apps.has("resources") || apps.getJSONArray("resources").length() == 0) //$NON-NLS-1$//$NON-NLS-2$
        return new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_NOT_FOUND, "Application not found", null);

      appMetadata = apps.getJSONArray("resources").getJSONObject(0).getJSONObject("metadata"); //$NON-NLS-1$ //$NON-NLS-2$
      appEntity = apps.getJSONArray("resources").getJSONObject(0).getJSONObject("entity"); //$NON-NLS-1$ //$NON-NLS-2$

      if (application.getGuid() == null) {

        String summaryAppUrl = appMetadata.getString("url") + "/summary"; //$NON-NLS-1$ //$NON-NLS-2$
        URI summaryAppURI = targetURI.resolve(summaryAppUrl);

        GetMethod getSummaryMethod = new GetMethod(summaryAppURI.toString());
        HttpUtil.configureHttpMethod(getSummaryMethod, target);

        ServerStatus getStatus = HttpUtil.executeMethod(getSummaryMethod);
        if (!getStatus.isOK())
          return getStatus;

        JSONObject summaryJSON = getStatus.getJsonData();

        /* set known application GUID */
        application.setGuid(summaryJSON.getString(CFProtocolConstants.V2_KEY_GUID));
      }

      /* gather application service bindings */
      ArrayList<String> serviceInstances = new ArrayList<String>();
      JSONArray appServiceBindings = appEntity.getJSONArray("service_bindings"); //$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$
      for (int i = 0; i < appServiceBindings.length(); ++i) {
        JSONObject binding = appServiceBindings.getJSONObject(i).getJSONObject("entity"); //$NON-NLS-1$
        serviceInstances.add(binding.getString("service_instance_url")); //$NON-NLS-1$
      }

      /* delete the application */
      URI appURI = targetURI.resolve("/v2/apps/" + application.getGuid()); //$NON-NLS-1$

      DeleteMethod deleteAppMethod = new DeleteMethod(appURI.toString());
      HttpUtil.configureHttpMethod(deleteAppMethod, target);
      deleteAppMethod.setQueryString("recursive=true"); //$NON-NLS-1$

      ServerStatus status = HttpUtil.executeMethod(deleteAppMethod);
      return status;

    } catch (Exception e) {
      String msg = NLS.bind("An error occured when performing operation {0}", commandName);
      logger.error(msg, e);
      return new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_INTERNAL_SERVER_ERROR, msg, e);
    }
  }

  @Override
  protected IStatus validateParams() {
    try {
      /* read deploy parameters */
      ManifestParseTree manifest = application.getManifest();
      ManifestParseTree app = manifest.get("applications").get(0); //$NON-NLS-1$

      if (application.getName() != null) {
        appName = application.getName();
        return Status.OK_STATUS;
      }

      appName = app.get(CFProtocolConstants.V2_KEY_NAME).getValue();
      return Status.OK_STATUS;

    } catch (InvalidAccessException e) {
      return new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_BAD_REQUEST, e.getMessage(), null);
    }
  }
}
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