org.eclipse.che.ide.ext.java.client.search.JavaSearchServiceWS.java Source code

Introduction

Here is the source code for org.eclipse.che.ide.ext.java.client.search.JavaSearchServiceWS.java

Source

/*******************************************************************************
 * Copyright (c) 2012-2016 Codenvy, S.A.
 * 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:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.eclipse.che.ide.ext.java.client.search;

import com.google.gwt.http.client.RequestBuilder;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.inject.Inject;
import com.google.inject.Singleton;

import org.eclipse.che.api.promises.client.Promise;
import org.eclipse.che.api.promises.client.callback.AsyncPromiseHelper;
import org.eclipse.che.api.promises.client.callback.PromiseHelper;
import org.eclipse.che.ide.api.app.AppContext;
import org.eclipse.che.ide.dto.DtoFactory;
import org.eclipse.che.ide.ext.java.shared.dto.search.FindUsagesRequest;
import org.eclipse.che.ide.ext.java.shared.dto.search.FindUsagesResponse;
import org.eclipse.che.ide.rest.DtoUnmarshallerFactory;
import org.eclipse.che.ide.ui.loaders.request.LoaderFactory;
import org.eclipse.che.ide.ui.loaders.request.MessageLoader;
import org.eclipse.che.ide.websocket.MessageBuilder;
import org.eclipse.che.ide.websocket.MessageBus;
import org.eclipse.che.ide.websocket.MessageBusProvider;
import org.eclipse.che.ide.websocket.WebSocketException;
import org.eclipse.che.ide.websocket.rest.RequestCallback;

import static org.eclipse.che.ide.MimeType.APPLICATION_JSON;
import static org.eclipse.che.ide.rest.HTTPHeader.ACCEPT;
import static org.eclipse.che.ide.rest.HTTPHeader.CONTENTTYPE;

/**
 * WebSocket implementation of JavaSearchService
 *
 * @author Evgen Vidolob
 */
@Singleton
public class JavaSearchServiceWS implements JavaSearchService {

    private MessageBusProvider provider;
    private DtoFactory dtoFactory;
    private MessageLoader loader;
    private DtoUnmarshallerFactory unmarshallerFactory;
    private String pathToService;

    @Inject
    public JavaSearchServiceWS(MessageBusProvider provider, AppContext appContext, DtoFactory dtoFactory,
            LoaderFactory loaderFactory, DtoUnmarshallerFactory unmarshallerFactory) {
        this.provider = provider;
        this.dtoFactory = dtoFactory;
        this.loader = loaderFactory.newLoader();
        this.unmarshallerFactory = unmarshallerFactory;
        this.pathToService = "/java/search/";
    }

    @Override
    public Promise<FindUsagesResponse> findUsages(final FindUsagesRequest request) {
        final MessageBus messageBus = provider.getMachineMessageBus();

        return PromiseHelper.newPromise(new AsyncPromiseHelper.RequestCall<FindUsagesResponse>() {
            @Override
            public void makeCall(final AsyncCallback<FindUsagesResponse> callback) {
                MessageBuilder builder = new MessageBuilder(RequestBuilder.POST, pathToService + "find/usages");
                builder.data(dtoFactory.toJson(request)).header(CONTENTTYPE, APPLICATION_JSON).header(ACCEPT,
                        APPLICATION_JSON);
                loader.show();
                try {
                    messageBus.send(builder.build(), new RequestCallback<FindUsagesResponse>(
                            unmarshallerFactory.newWSUnmarshaller(FindUsagesResponse.class)) {
                        @Override
                        protected void onSuccess(FindUsagesResponse result) {
                            loader.hide();
                            callback.onSuccess(result);
                        }

                        @Override
                        protected void onFailure(Throwable exception) {
                            loader.hide();
                            callback.onFailure(exception);
                        }
                    });
                } catch (WebSocketException e) {
                    loader.hide();
                    callback.onFailure(e);
                }
            }
        });
    }
}