Java tutorial
/******************************************************************************* * Copyright (c) 2013 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.*; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.URIUtil; 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.cf.utils.MultiServerStatus; import org.eclipse.orion.server.core.ServerStatus; import org.eclipse.osgi.util.NLS; import org.json.*; import org.slf4j.Logger; import org.slf4j.LoggerFactory; public class BindServicesCommand extends AbstractCFApplicationCommand { private final Logger logger = LoggerFactory.getLogger("org.eclipse.orion.server.cf"); //$NON-NLS-1$ private String commandName; public BindServicesCommand(Target target, App app) { super(target, app); String[] bindings = { app.getName(), app.getGuid() }; this.commandName = NLS.bind("Bind new services to application {1} (guid: {2})", bindings); } @Override protected ServerStatus _doIt() { /* multi server status */ MultiServerStatus status = new MultiServerStatus(); try { /* bind services */ URI targetURI = URIUtil.toURI(target.getUrl()); ManifestParseTree manifest = getApplication().getManifest(); ManifestParseTree app = manifest.get("applications").get(0); //$NON-NLS-1$ if (app.has(CFProtocolConstants.V2_KEY_SERVICES)) { /* fetch all services */ URI servicesURI = targetURI.resolve("/v2/services"); //$NON-NLS-1$ GetMethod getServicesMethod = new GetMethod(servicesURI.toString()); HttpUtil.configureHttpMethod(getServicesMethod, target); getServicesMethod.setQueryString("inline-relations-depth=1"); //$NON-NLS-1$ /* send request */ ServerStatus jobStatus = HttpUtil.executeMethod(getServicesMethod); status.add(jobStatus); if (!jobStatus.isOK()) return status; JSONObject resp = jobStatus.getJsonData(); JSONArray servicesJSON = resp.getJSONArray(CFProtocolConstants.V2_KEY_RESOURCES); /* check for manifest version */ ManifestParseTree services = app.getOpt(CFProtocolConstants.V2_KEY_SERVICES); if (services == null) /* nothing to do */ return status; int version = services.isList() ? 6 : 2; if (version == 2) { String spaceGuid = target.getSpace().getGuid(); URI serviceInstancesURI2 = targetURI.resolve("/v2/spaces/" + spaceGuid + "/service_instances"); //$NON-NLS-1$//$NON-NLS-2$ for (ManifestParseTree service : services.getChildren()) { String serviceName = service.getLabel(); String nameService = "name:" + serviceName; //$NON-NLS-1$ NameValuePair[] pa = new NameValuePair[] { new NameValuePair("return_user_provided_service_instance", "false"), // //$NON-NLS-1$//$NON-NLS-2$ new NameValuePair("q", nameService), //$NON-NLS-1$ new NameValuePair("inline-relations-depth", "2") // //$NON-NLS-1$ //$NON-NLS-2$ }; GetMethod getServiceMethod = new GetMethod(serviceInstancesURI2.toString()); getServiceMethod.setQueryString(pa); HttpUtil.configureHttpMethod(getServiceMethod, target); /* send request */ jobStatus = HttpUtil.executeMethod(getServiceMethod); status.add(jobStatus); if (!jobStatus.isOK()) return status; resp = jobStatus.getJsonData(); String serviceInstanceGUID = null; JSONArray respArray = resp.getJSONArray(CFProtocolConstants.V2_KEY_RESOURCES); for (int i = 0; i < respArray.length(); ++i) { JSONObject o = respArray.optJSONObject(i); if (o != null) { JSONObject str = o.optJSONObject(CFProtocolConstants.V2_KEY_METADATA); if (str != null) { serviceInstanceGUID = str.getString(CFProtocolConstants.V2_KEY_GUID); break; } } } if (serviceInstanceGUID == null) { /* no service instance bound to the application, create one if possible */ /* support both 'type' and 'label' fields as service type */ ManifestParseTree serviceType = service.getOpt(CFProtocolConstants.V2_KEY_TYPE); if (serviceType == null) serviceType = service.get(CFProtocolConstants.V2_KEY_LABEL); ManifestParseTree provider = service.get(CFProtocolConstants.V2_KEY_PROVIDER); ManifestParseTree plan = service.get(CFProtocolConstants.V2_KEY_PLAN); String servicePlanGUID = findServicePlanGUID(serviceType.getValue(), provider.getValue(), plan.getValue(), servicesJSON); if (servicePlanGUID == null) { String[] bindings = { serviceName, serviceType.getValue(), plan.getValue() }; String msg = NLS.bind( "Could not find service instance {0} nor service {1} with plan {2} in target.", bindings); status.add(new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_BAD_REQUEST, msg, null)); return status; } /* create service instance */ URI serviceInstancesURI = targetURI.resolve("/v2/service_instances"); //$NON-NLS-1$ PostMethod createServiceMethod = new PostMethod(serviceInstancesURI.toString()); HttpUtil.configureHttpMethod(createServiceMethod, target); /* set request body */ JSONObject createServiceRequest = new JSONObject(); createServiceRequest.put(CFProtocolConstants.V2_KEY_SPACE_GUID, target.getSpace().getCFJSON().getJSONObject(CFProtocolConstants.V2_KEY_METADATA) .getString(CFProtocolConstants.V2_KEY_GUID)); createServiceRequest.put(CFProtocolConstants.V2_KEY_NAME, serviceName); createServiceRequest.put(CFProtocolConstants.V2_KEY_SERVICE_PLAN_GUID, servicePlanGUID); createServiceMethod.setRequestEntity(new StringRequestEntity( createServiceRequest.toString(), "application/json", "utf-8")); //$NON-NLS-1$ //$NON-NLS-2$ /* send request */ jobStatus = HttpUtil.executeMethod(createServiceMethod); status.add(jobStatus); if (!jobStatus.isOK()) return status; resp = jobStatus.getJsonData(); serviceInstanceGUID = resp.getJSONObject(CFProtocolConstants.V2_KEY_METADATA) .getString(CFProtocolConstants.V2_KEY_GUID); } /* bind service to the application */ URI serviceBindingsURI = targetURI.resolve("/v2/service_bindings"); //$NON-NLS-1$ PostMethod bindServiceMethod = new PostMethod(serviceBindingsURI.toString()); HttpUtil.configureHttpMethod(bindServiceMethod, target); /* set request body */ JSONObject bindServiceRequest = new JSONObject(); bindServiceRequest.put(CFProtocolConstants.V2_KEY_APP_GUID, getApplication().getGuid()); bindServiceRequest.put(CFProtocolConstants.V2_KEY_SERVICE_INSTANCE_GUID, serviceInstanceGUID); bindServiceMethod.setRequestEntity(new StringRequestEntity(bindServiceRequest.toString(), "application/json", "utf-8")); //$NON-NLS-1$ //$NON-NLS-2$ /* send request */ jobStatus = HttpUtil.executeMethod(bindServiceMethod); status.add(jobStatus); if (!jobStatus.isOK()) return status; } } if (version == 6) { String spaceGuid = target.getSpace().getGuid(); URI serviceInstancesURI = targetURI.resolve("/v2/spaces/" + spaceGuid + "/service_instances"); //$NON-NLS-1$//$NON-NLS-2$ for (ManifestParseTree service : services.getChildren()) { String nameService = service.getValue(); NameValuePair[] pa = new NameValuePair[] { new NameValuePair("return_user_provided_service_instance", "true"), // //$NON-NLS-1$ //$NON-NLS-2$ new NameValuePair("q", "name:" + nameService), //$NON-NLS-1$//$NON-NLS-2$ new NameValuePair("inline-relations-depth", "2") }; //$NON-NLS-1$ //$NON-NLS-2$ GetMethod getServiceMethod = new GetMethod(serviceInstancesURI.toString()); getServiceMethod.setQueryString(pa); HttpUtil.configureHttpMethod(getServiceMethod, target); /* send request */ jobStatus = HttpUtil.executeMethod(getServiceMethod); status.add(jobStatus); if (!jobStatus.isOK()) return status; resp = jobStatus.getJsonData(); String serviceInstanceGUID = null; JSONArray respArray = resp.getJSONArray(CFProtocolConstants.V2_KEY_RESOURCES); for (int i = 0; i < respArray.length(); i++) { JSONObject o = respArray.optJSONObject(i); if (o != null) { JSONObject str = o.optJSONObject(CFProtocolConstants.V2_KEY_METADATA); if (str != null) { serviceInstanceGUID = str.getString(CFProtocolConstants.V2_KEY_GUID); } } } if (serviceInstanceGUID == null) { status.add(new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_BAD_REQUEST, "Service instance " + nameService + " can not be found in target space", null)); return status; } /* bind service to the application */ URI serviceBindingsURI = targetURI.resolve("/v2/service_bindings"); //$NON-NLS-1$ PostMethod bindServiceMethod = new PostMethod(serviceBindingsURI.toString()); HttpUtil.configureHttpMethod(bindServiceMethod, target); /* set request body */ JSONObject bindServiceRequest = new JSONObject(); bindServiceRequest.put(CFProtocolConstants.V2_KEY_APP_GUID, getApplication().getGuid()); bindServiceRequest.put(CFProtocolConstants.V2_KEY_SERVICE_INSTANCE_GUID, serviceInstanceGUID); bindServiceMethod.setRequestEntity(new StringRequestEntity(bindServiceRequest.toString(), "application/json", "utf-8")); //$NON-NLS-1$ //$NON-NLS-2$ /* send request */ jobStatus = HttpUtil.executeMethod(bindServiceMethod); status.add(jobStatus); if (!jobStatus.isOK()) return status; } } } return status; } catch (InvalidAccessException e) { status.add(new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_BAD_REQUEST, e.getMessage(), null)); return status; } 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; } } /* helper method to find the appropriate service plan guid */ private String findServicePlanGUID(String service, String provider, String plan, JSONArray servicesJSON) throws JSONException { for (int i = 0; i < servicesJSON.length(); ++i) { JSONObject serviceJSON = servicesJSON.getJSONObject(i).getJSONObject(CFProtocolConstants.V2_KEY_ENTITY); if (service.equals(serviceJSON.getString(CFProtocolConstants.V2_KEY_LABEL)) && provider.equals(serviceJSON.getString(CFProtocolConstants.V2_KEY_PROVIDER))) { /* find correct service plan */ JSONArray servicePlans = serviceJSON.getJSONArray(CFProtocolConstants.V2_KEY_SERVICE_PLANS); for (int j = 0; j < servicePlans.length(); ++j) { JSONObject servicePlan = servicePlans.getJSONObject(j); if (plan.equals(servicePlan.getJSONObject(CFProtocolConstants.V2_KEY_ENTITY) .getString(CFProtocolConstants.V2_KEY_NAME))) return servicePlan.getJSONObject(CFProtocolConstants.V2_KEY_METADATA) .getString(CFProtocolConstants.V2_KEY_GUID); } } } return null; } }