cmg.org.monitor.services.GooglePlusService.java Source code

Introduction

Here is the source code for cmg.org.monitor.services.GooglePlusService.java

Source

/**
 * Copyright (c) CMG Ltd All rights reserved.
 *
 * This software is the confidential and proprietary information of CMG
 * ("Confidential Information"). You shall not disclose such Confidential
 * Information and shall use it only in accordance with the terms of the
 * license agreement you entered into with CMG.
 */

package cmg.org.monitor.services;

import java.io.File;
import java.io.IOException;
import java.util.Collections;

import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp;
import com.google.api.client.extensions.java6.auth.oauth2.FileCredentialStore;
import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.services.plus.Plus;
import com.google.api.services.plus.PlusScopes;
import com.google.api.services.plus.model.Activity;
import com.google.api.services.plus.model.ActivityFeed;
import com.google.api.services.plus.model.Person;

/** 
 * DOCME
 * 
 * @Creator Hai Lu
 * @author $Author$
 * @version $Revision$
 * @Last changed: $LastChangedDate$
 */

/** 
   * DOCME
   * 
   * @Creator Hai Lu
   * @author $Author$
   * @version $Revision$
   * @Last changed: $LastChangedDate$
*/
public class GooglePlusService {

    /*
     * Copyright (c) 2010 Google Inc.
     * 
     * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
     * in compliance with the License. You may obtain a copy of the License at
     * 
     * http://www.apache.org/licenses/LICENSE-2.0
     * 
     * Unless required by applicable law or agreed to in writing, software distributed under the License
     * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
     * or implied. See the License for the specific language governing permissions and limitations under
     * the License.
     */

    /** Global instance of the HTTP transport. */
    private static final HttpTransport HTTP_TRANSPORT = new NetHttpTransport();

    /** Global instance of the JSON factory. */
    private static final JsonFactory JSON_FACTORY = new JacksonFactory();

    private static Plus plus;

    /** Authorizes the installed application to access user's protected data. */
    private static Credential authorize() throws Exception {
        // load client secrets
        GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY,
                GooglePlusService.class.getResourceAsStream("/cmg/org/monitor/client/secrets/client_secrets.json"));

        // set up file credential store
        FileCredentialStore credentialStore = new FileCredentialStore(new File("D:/plus.json"), JSON_FACTORY);
        // set up authorization code flow
        GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(HTTP_TRANSPORT, JSON_FACTORY,
                clientSecrets, Collections.singleton(PlusScopes.PLUS_ME)).setCredentialStore(credentialStore)
                        .build();
        // authorize
        return new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user");
    }

    public static void main(String[] args) {
        try {
            try {
                // authorization
                Credential credential = authorize();
                // set up global Plus instance
                plus = new Plus.Builder(HTTP_TRANSPORT, JSON_FACTORY, credential)
                        .setApplicationName("Google-PlusSample/1.0").build();
                // run commands
                listActivities();
                getActivity();
                getProfile();
                // success!
                return;
            } catch (IOException e) {
                System.err.println(e.getMessage());
            }
        } catch (Throwable t) {
            t.printStackTrace();
        }
        System.exit(1);
    }

    /** List the public activities for the authenticated user. */
    private static void listActivities() throws IOException {

        // Fetch the first page of activities
        Plus.Activities.List listActivities = plus.activities().list("me", "public");
        listActivities.setMaxResults(5L);
        // Pro tip: Use partial responses to improve response time considerably
        listActivities.setFields("nextPageToken,items(id,url,object/content)");
        ActivityFeed feed = listActivities.execute();
        // Keep track of the page number in case we're listing activities
        // for a user with thousands of activities. We'll limit ourselves
        // to 5 pages
        int currentPageNumber = 0;
        while (feed.getItems() != null && !feed.getItems().isEmpty() && ++currentPageNumber <= 5) {
            for (Activity activity : feed.getItems()) {

            }
            // Fetch the next page
            String nextPageToken = feed.getNextPageToken();
            if (nextPageToken == null) {
                break;
            }
            listActivities.setPageToken(nextPageToken);

            feed = listActivities.execute();
        }
    }

    /** Get an activity for which we already know the ID. */
    private static void getActivity() throws IOException {
        // A known public activity ID
        String activityId = "z12gtjhq3qn2xxl2o224exwiqruvtda0i";
        // We do not need to be authenticated to fetch this activity

        Activity activity = plus.activities().get(activityId).execute();

    }

    /** Get the profile for the authenticated user. */
    private static void getProfile() throws IOException {

        Person profile = plus.people().get("me").execute();

    }
}