/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
package org.apache.camel.example.gauth;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
import com.google.gdata.client.authn.oauth.OAuthHmacSha1Signer;
import com.google.gdata.client.authn.oauth.OAuthParameters;
import com.google.gdata.client.calendar.CalendarService;
import com.google.gdata.data.calendar.CalendarEntry;
import com.google.gdata.data.calendar.CalendarFeed;
/**
* Facade for getting calendar names from the Google Calendar API. The access is made on
* behalf of a user by providing an OAuth access token and access token secret.
*/
public class TutorialService {
private Properties credentials;
/**
* Sets properties that contains the application's consumer key and consumer secret.
*
* @param credentials consumer key and consumer secret.
*/
public void setCredentials(Properties credentials) {
this.credentials = credentials;
}
/**
* Obtains a list of names of a user's public and private calendars from the Google
* Calendar API.
*
* @param accessToken OAuth access token.
* @param accessTokenSecret OAuth access token secret.
* @return list of names of a user's public and private calendars.
*/
public List<String> getCalendarNames(String accessToken, String accessTokenSecret) throws Exception {
CalendarService calendarService = new CalendarService("apache-camel-2.3");
OAuthParameters params = getOAuthParams(accessToken, accessTokenSecret);
calendarService.setOAuthCredentials(params, new OAuthHmacSha1Signer());
URL feedUrl = new URL("http://www.google.com/calendar/feeds/default/");
CalendarFeed resultFeed = calendarService.getFeed(feedUrl, CalendarFeed.class);
ArrayList<String> result = new ArrayList<String>();
for (int i = 0; i < resultFeed.getEntries().size(); i++) {
CalendarEntry entry = resultFeed.getEntries().get(i);
result.add(entry.getTitle().getPlainText());
}
return result;
}
private OAuthParameters getOAuthParams(String accessToken, String accessTokenSecret) {
OAuthParameters params = new OAuthParameters();
params.setOAuthConsumerKey(credentials.getProperty("consumer.key"));
params.setOAuthConsumerSecret(credentials.getProperty("consumer.secret"));
params.setOAuthToken(accessToken);
params.setOAuthTokenSecret(accessTokenSecret);
return params;
}
}