Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package ifpb.pod.proj.appdata.repositorio; 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.javanet.GoogleNetHttpTransport; import com.google.api.client.googleapis.media.MediaHttpDownloader; import com.google.api.client.googleapis.media.MediaHttpUploader; import com.google.api.client.http.AbstractInputStreamContent; import com.google.api.client.http.FileContent; import com.google.api.client.http.GenericUrl; import com.google.api.client.http.HttpTransport; import com.google.api.client.http.InputStreamContent; import com.google.api.client.json.JsonFactory; import com.google.api.client.json.jackson2.JacksonFactory; import com.google.api.client.util.Preconditions; import com.google.api.client.util.store.DataStoreFactory; import com.google.api.client.util.store.FileDataStoreFactory; import com.google.api.services.drive.Drive; import com.google.api.services.drive.DriveScopes; import com.google.api.services.drive.model.File; import com.google.api.services.drive.model.FileList; import ifpb.pod.proj.appdata.repositorio.BibliotecaArquivos; import ifpb.pod.proj.appdata.repositorio.Repositorio; import java.io.BufferedInputStream; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.util.Arrays; import java.util.List; /** * * @author Jos Marcondes do Nascimento Junior */ public class GDriveRepositorio implements Repositorio { private static final String USRFILE = "0B9cCXHDSR9etVEFyTUdwQW9PM0E"; private static final String MSGFILE = "0B9cCXHDSR9etZHdpMVlaS3Y1VzA"; private static final String USRGRP = "0B9cCXHDSR9etb1BtWlBpUUpOZFk"; private static final String GRUPOFILE = "0B9cCXHDSR9etTXJKcUZTZHNoQnM"; private static Drive drive; /** * 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; /** * Application name. */ private static final String APPLICATION_NAME = "Drive API Java Quickstart"; /** * Directory to store user credentials for this application. */ private static final java.io.File DATA_STORE_DIR = new java.io.File(System.getProperty("user.home"), ".credentials/pod-proj-chat.json"); /** * Global instance of the {@link FileDataStoreFactory}. */ private static FileDataStoreFactory DATA_STORE_FACTORY; /** * Global instance of the JSON factory. */ private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance(); /** * Global instance of the HTTP transport. */ private static HttpTransport HTTP_TRANSPORT; private static final List<String> SCOPES = Arrays.asList(DriveScopes.DRIVE); static { try { HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport(); DATA_STORE_FACTORY = new FileDataStoreFactory(DATA_STORE_DIR); } catch (Throwable t) { t.printStackTrace(); System.exit(1); } } /** * Authorizes the installed application to access user's protected data. */ private Credential authorize() throws Exception { // Load client secrets. InputStream in = this.getClass().getResourceAsStream("/client_secret.json"); GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(in)); // Build flow and trigger user authorization request. GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(HTTP_TRANSPORT, JSON_FACTORY, clientSecrets, SCOPES).setDataStoreFactory(DATA_STORE_FACTORY).setAccessType("offline").build(); Credential credential = new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()) .authorize("user"); System.out.println("Credentials saved to " + DATA_STORE_DIR.getAbsolutePath()); return credential; } /** * Build and return an authorized Drive client service. * * @return an authorized Drive client service * @throws IOException */ private Drive getDriveService() throws IOException, Exception { if (drive == null) { Credential credential = authorize(); drive = new Drive.Builder(HTTP_TRANSPORT, JSON_FACTORY, credential).setApplicationName(APPLICATION_NAME) .build(); } return drive; } // public static void main(String[] args) throws IOException, Exception { // // Build a new authorized API client service. // Drive service = new GDriveRepositorio().getDriveService(); // // // Print the names and IDs for up to 10 files. // FileList result = service.files().list() // .setPageSize(100) // .setFields("nextPageToken, files(id, name)") // .execute(); // List<File> files = result.getFiles(); // if (files == null || files.size() == 0) { // System.out.println("No files found."); // } else { // System.out.println("Files:"); // for (File file : files) { // System.out.printf("%s (%s)\n", file.getName(), file.getId()); // } // } // } @Override public void updateFile(java.io.File fl, BibliotecaArquivos b) throws FileNotFoundException, Exception { if (null != b) { switch (b) { case USUARIOS: updateUsrFile(fl); break; case MENSAGENS: updateMsgFile(fl); break; case USUARIO_GRUPO: updateUsrGpFile(fl); break; default: break; } } } private void updateUsrFile(java.io.File fl) throws IOException, Exception, FileNotFoundException { File body = new File(); body.setTitle("usuarios.xml"); body.setMimeType("text/xml"); InputStreamContent mediaContent = new InputStreamContent("text/xml", new BufferedInputStream(new FileInputStream(fl))); Drive.Files.Update request = getDriveService().files().update(USRFILE, body, mediaContent); request.execute(); } private void updateMsgFile(java.io.File fl) throws IOException, Exception, FileNotFoundException { File body = new File(); body.setTitle("mensagens.xml"); body.setMimeType("text/xml"); InputStreamContent mediaContent = new InputStreamContent("text/xml", new BufferedInputStream(new FileInputStream(fl))); Drive.Files.Update request = getDriveService().files().update(MSGFILE, body, mediaContent); request.execute(); } @Override public java.io.File downloadFile(BibliotecaArquivos b) throws Exception { switch (b) { case USUARIOS: return dowloadUsersFile(); case MENSAGENS: return dowloadMsgFile(); case USUARIO_GRUPO: return dowloadUsrGpFile(); case GRUPO: return dowloadGpFile(); default: return null; } } private java.io.File dowloadUsersFile() throws IOException, Exception, FileNotFoundException { File userFilesMeta = getDriveService().files().get(USRFILE).execute(); OutputStream out = new FileOutputStream(this.getClass().getResource("/downloads/usuarios.xml").getFile()); MediaHttpDownloader downloader = new MediaHttpDownloader(HTTP_TRANSPORT, getDriveService().getRequestFactory().getInitializer()); downloader.download(new GenericUrl(userFilesMeta.getDownloadUrl()), out); return new java.io.File(this.getClass().getResource("/downloads/usuarios.xml").getFile()); } private java.io.File dowloadMsgFile() throws IOException, Exception, FileNotFoundException { File userFilesMeta = getDriveService().files().get(MSGFILE).execute(); OutputStream out = new FileOutputStream(this.getClass().getResource("/downloads/mensagens.xml").getFile()); MediaHttpDownloader downloader = new MediaHttpDownloader(HTTP_TRANSPORT, getDriveService().getRequestFactory().getInitializer()); downloader.download(new GenericUrl(userFilesMeta.getDownloadUrl()), out); return new java.io.File(this.getClass().getResource("/downloads/mensagens.xml").getFile()); } private void updateUsrGpFile(java.io.File fl) throws IOException, Exception, FileNotFoundException { File body = new File(); body.setTitle("usuario_grupo.xml"); body.setMimeType("text/xml"); InputStreamContent mediaContent = new InputStreamContent("text/xml", new BufferedInputStream(new FileInputStream(fl))); Drive.Files.Update request = getDriveService().files().update(USRGRP, body, mediaContent); request.execute(); } private java.io.File dowloadUsrGpFile() throws IOException, Exception, FileNotFoundException { File userFilesMeta = getDriveService().files().get(USRGRP).execute(); OutputStream out = new FileOutputStream( this.getClass().getResource("/downloads/usuario_grupo.xml").getFile()); MediaHttpDownloader downloader = new MediaHttpDownloader(HTTP_TRANSPORT, getDriveService().getRequestFactory().getInitializer()); downloader.download(new GenericUrl(userFilesMeta.getDownloadUrl()), out); return new java.io.File(this.getClass().getResource("/downloads/usuario_grupo.xml").getFile()); } private void updateGpFile(java.io.File fl) throws IOException, Exception, FileNotFoundException { File body = new File(); body.setTitle("grupos.xml"); body.setMimeType("text/xml"); InputStreamContent mediaContent = new InputStreamContent("text/xml", new BufferedInputStream(new FileInputStream(fl))); Drive.Files.Update request = getDriveService().files().update(GRUPOFILE, body, mediaContent); request.execute(); } private java.io.File dowloadGpFile() throws IOException, Exception, FileNotFoundException { File userFilesMeta = getDriveService().files().get(GRUPOFILE).execute(); OutputStream out = new FileOutputStream(this.getClass().getResource("/downloads/grupos.xml").getFile()); MediaHttpDownloader downloader = new MediaHttpDownloader(HTTP_TRANSPORT, getDriveService().getRequestFactory().getInitializer()); downloader.download(new GenericUrl(userFilesMeta.getDownloadUrl()), out); return new java.io.File(this.getClass().getResource("/downloads/grupos.xml").getFile()); } }