Java tutorial
/* * 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. */ package calendariotaller; import org.mortbay.jetty.*; import javax.servlet.http.HttpServletRequest; import com.google.api.client.auth.oauth2.Credential; import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp; 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.googleapis.batch.BatchRequest; import com.google.api.client.googleapis.batch.json.JsonBatchCallback; import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport; import com.google.api.client.googleapis.json.GoogleJsonError; import com.google.api.client.http.HttpHeaders; import com.google.api.client.http.HttpTransport; import com.google.api.client.json.JsonFactory; import com.google.api.client.json.jackson2.JacksonFactory; import com.google.api.client.util.DateTime; import com.google.api.client.util.Lists; import com.google.api.client.util.store.DataStoreFactory; import com.google.api.client.util.store.FileDataStoreFactory; import com.google.api.services.calendar.CalendarScopes; import com.google.api.services.calendar.model.Calendar; import com.google.api.services.calendar.model.CalendarList; import com.google.api.services.calendar.model.Event; import com.google.api.services.calendar.model.EventDateTime; import com.google.api.services.calendar.model.Events; import java.io.IOException; import java.io.InputStreamReader; import java.io.Reader; import java.util.Collections; import java.util.Date; import java.util.TimeZone; /** * @author Yaniv Inbar */ public class CalendarSample { /** * Be sure to specify the name of your application. If the application name is {@code null} or * blank, the application will log a warning. Suggested format is "MyCompany-ProductName/1.0". */ private static final String APPLICATION_NAME = ""; /** Directory to store user credentials. */ private static final java.io.File DATA_STORE_DIR = new java.io.File(System.getProperty("user.home"), ".store/calendar_sample"); /** * Global instance of the {@link DataStoreFactory}. The best practice is to make it a single * globally shared instance across your application. */ private static FileDataStoreFactory dataStoreFactory; /** Global instance of the HTTP transport. */ private static HttpTransport httpTransport; /** Global instance of the JSON factory. */ private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance(); private static com.google.api.services.calendar.Calendar client; static final java.util.List<Calendar> addedCalendarsUsingBatch = Lists.newArrayList(); /** Authorizes the installed application to access user's protected data. */ private static Credential authorize() throws Exception { // load client secrets Reader lector = new InputStreamReader( CalendarSample.class.getResourceAsStream("/calendariotaller/client_secrets.json")); GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, lector); if (clientSecrets.getDetails().getClientId().startsWith("Enter") || clientSecrets.getDetails().getClientSecret().startsWith("Enter ")) { System.out.println("Enter Client ID and Secret from https://code.google.com/apis/console/?api=calendar " + "into calendar-cmdline-sample/src/main/resources/client_secrets.json"); System.exit(1); } // set up authorization code flow GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(httpTransport, JSON_FACTORY, clientSecrets, Collections.singleton(CalendarScopes.CALENDAR)).setDataStoreFactory(dataStoreFactory) .build(); // authorize return new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user"); } public static void main(String[] args) { try { // initialize the transport httpTransport = GoogleNetHttpTransport.newTrustedTransport(); // initialize the data store factory dataStoreFactory = new FileDataStoreFactory(DATA_STORE_DIR); // authorization Credential credential = authorize(); // set up global Calendar instance client = new com.google.api.services.calendar.Calendar.Builder(httpTransport, JSON_FACTORY, credential) .setApplicationName(APPLICATION_NAME).build(); // run commands showCalendars(); addCalendarsUsingBatch(); Calendar calendar = addCalendar(); updateCalendar(calendar); addEvent(calendar); showEvents(calendar); deleteCalendarsUsingBatch(); deleteCalendar(calendar); } catch (IOException e) { System.err.println(e.getMessage()); } catch (Throwable t) { t.printStackTrace(); } System.exit(1); } private static void showCalendars() throws IOException { View.header("Show Calendars"); CalendarList feed = client.calendarList().list().execute(); View.display(feed); } private static void addCalendarsUsingBatch() throws IOException { View.header("Add Calendars using Batch"); BatchRequest batch = client.batch(); // Create the callback. JsonBatchCallback<Calendar> callback = new JsonBatchCallback<Calendar>() { @Override public void onSuccess(Calendar calendar, HttpHeaders responseHeaders) { View.display(calendar); addedCalendarsUsingBatch.add(calendar); } @Override public void onFailure(GoogleJsonError e, HttpHeaders responseHeaders) { System.out.println("Error Message: " + e.getMessage()); } }; // Create 2 Calendar Entries to insert. Calendar entry1 = new Calendar().setSummary("Calendar for Testing 1"); client.calendars().insert(entry1).queue(batch, callback); Calendar entry2 = new Calendar().setSummary("Calendar for Testing 2"); client.calendars().insert(entry2).queue(batch, callback); batch.execute(); } private static Calendar addCalendar() throws IOException { View.header("Add Calendar"); Calendar entry = new Calendar(); entry.setSummary("Calendar for Testing 3"); Calendar result = client.calendars().insert(entry).execute(); View.display(result); return result; } private static Calendar updateCalendar(Calendar calendar) throws IOException { View.header("Update Calendar"); Calendar entry = new Calendar(); entry.setSummary("Updated Calendar for Testing"); Calendar result = client.calendars().patch(calendar.getId(), entry).execute(); View.display(result); return result; } private static void addEvent(Calendar calendar) throws IOException { View.header("Add Event"); Event event = newEvent(); Event result = client.events().insert(calendar.getId(), event).execute(); View.display(result); } private static Event newEvent() { Event event = new Event(); event.setSummary("New Event"); Date startDate = new Date(); Date endDate = new Date(startDate.getTime() + 3600000); DateTime start = new DateTime(startDate, TimeZone.getTimeZone("UTC")); event.setStart(new EventDateTime().setDateTime(start)); DateTime end = new DateTime(endDate, TimeZone.getTimeZone("UTC")); event.setEnd(new EventDateTime().setDateTime(end)); return event; } private static void showEvents(Calendar calendar) throws IOException { View.header("Show Events"); Events feed = client.events().list(calendar.getId()).execute(); View.display(feed); } private static void deleteCalendarsUsingBatch() throws IOException { View.header("Delete Calendars Using Batch"); BatchRequest batch = client.batch(); for (Calendar calendar : addedCalendarsUsingBatch) { client.calendars().delete(calendar.getId()).queue(batch, new JsonBatchCallback<Void>() { @Override public void onSuccess(Void content, HttpHeaders responseHeaders) { System.out.println("Delete is successful!"); } @Override public void onFailure(GoogleJsonError e, HttpHeaders responseHeaders) { System.out.println("Error Message: " + e.getMessage()); } }); } batch.execute(); } private static void deleteCalendar(Calendar calendar) throws IOException { View.header("Delete Calendar"); client.calendars().delete(calendar.getId()).execute(); } }