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

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Here is the source code for org.eclipse.orion.server.cf.commands.DeleteApplicationCommand.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 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);
        }
    }
}