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

Introduction

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

Source

/*******************************************************************************
 * 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.NameValuePair;
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.objects.Service;
import org.eclipse.orion.server.cf.objects.Target;
import org.eclipse.orion.server.cf.utils.HttpUtil;
import org.eclipse.orion.server.cf.utils.MultiServerStatus;
import org.eclipse.orion.server.core.ProtocolConstants;
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 GetServiceInstancesCommand extends AbstractCFCommand {
    private final Logger logger = LoggerFactory.getLogger("org.eclipse.orion.server.cf"); //$NON-NLS-1$

    private String commandName;

    public GetServiceInstancesCommand(Target target) {
        super(target);
        this.commandName = "Get service instances";
    }

    @Override
    protected ServerStatus _doIt() {

        /* multi server status */
        MultiServerStatus status = new MultiServerStatus();

        try {

            JSONObject response = new JSONObject();
            JSONArray services = new JSONArray();

            /* get services */
            URI targetURI = URIUtil.toURI(target.getUrl());
            String spaceGuid = target.getSpace().getGuid();

            URI serviceInstancesURI = targetURI.resolve("/v2/spaces/" + spaceGuid + "/service_instances"); //$NON-NLS-1$//$NON-NLS-2$
            NameValuePair[] pa = new NameValuePair[] { //
                    new NameValuePair("return_user_provided_service_instances", "true"), //  //$NON-NLS-1$//$NON-NLS-2$
                    new NameValuePair("inline-relations-depth", "1") //  //$NON-NLS-1$ //$NON-NLS-2$
            };

            do {

                GetMethod getServiceInstancesMethod = new GetMethod(serviceInstancesURI.toString());
                getServiceInstancesMethod.setQueryString(pa);
                HttpUtil.configureHttpMethod(getServiceInstancesMethod, target);

                /* send request */
                ServerStatus jobStatus = HttpUtil.executeMethod(getServiceInstancesMethod);
                status.add(jobStatus);
                if (!jobStatus.isOK())
                    return status;

                JSONObject resp = jobStatus.getJsonData();
                if (resp.has(CFProtocolConstants.V2_KEY_NEXT_URL)
                        && !resp.isNull(CFProtocolConstants.V2_KEY_NEXT_URL))
                    serviceInstancesURI = targetURI.resolve(resp.getString(CFProtocolConstants.V2_KEY_NEXT_URL));
                else
                    serviceInstancesURI = null;

                JSONArray resources = resp.getJSONArray(CFProtocolConstants.V2_KEY_RESOURCES);
                for (int i = 0; i < resources.length(); ++i) {
                    JSONObject serviceObj = resources.getJSONObject(i);

                    JSONObject serviceInstanceEntity = serviceObj.getJSONObject(CFProtocolConstants.V2_KEY_ENTITY);
                    JSONObject serviceEntity = serviceInstanceEntity
                            .getJSONObject(CFProtocolConstants.V2_KEY_SERVICE_PLAN)//
                            .getJSONObject(CFProtocolConstants.V2_KEY_ENTITY);

                    String serviceGuid = serviceEntity.getString(CFProtocolConstants.V2_KEY_SERVICE_GUID);
                    GetServiceCommand getServiceCommand = new GetServiceCommand(target, serviceGuid);

                    /* get detailed info about the service */
                    jobStatus = (ServerStatus) getServiceCommand.doIt(); /* FIXME: unsafe type cast */
                    status.add(jobStatus);
                    if (!jobStatus.isOK())
                        return status;

                    JSONObject serviceResp = jobStatus.getJsonData();
                    boolean isBindable = serviceResp.getJSONObject(CFProtocolConstants.V2_KEY_ENTITY)
                            .getBoolean(CFProtocolConstants.V2_KEY_BINDABLE);

                    if (isBindable) {
                        Service s = new Service(serviceInstanceEntity.getString(CFProtocolConstants.V2_KEY_NAME));
                        services.put(s.toJSON());
                    }
                }

            } while (serviceInstancesURI != null);

            response.put(ProtocolConstants.KEY_CHILDREN, services);
            return new ServerStatus(Status.OK_STATUS, HttpServletResponse.SC_OK, response);

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

    }
}