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| 1 | +// Copyright 2024 Google LLC |
| 2 | +// |
| 3 | +// Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | +// you may not use this file except in compliance with the License. |
| 5 | +// You may obtain a copy of the License at |
| 6 | +// |
| 7 | +// http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | +// |
| 9 | +// Unless required by applicable law or agreed to in writing, software |
| 10 | +// distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | +// See the License for the specific language governing permissions and |
| 13 | +// limitations under the License. |
| 14 | + |
| 15 | +// [START meet_quickstart] |
| 16 | + |
| 17 | +import java.awt.Desktop; |
| 18 | +import java.io.FileNotFoundException; |
| 19 | +import java.io.IOException; |
| 20 | +import java.io.InputStream; |
| 21 | +import java.net.URI; |
| 22 | +import java.net.URL; |
| 23 | +import java.nio.file.Files; |
| 24 | +import java.nio.file.Path; |
| 25 | +import java.nio.file.Paths; |
| 26 | +import java.util.Collections; |
| 27 | +import java.util.List; |
| 28 | + |
| 29 | +import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver; |
| 30 | +import com.google.api.gax.core.FixedCredentialsProvider; |
| 31 | +import com.google.apps.meet.v2.CreateSpaceRequest; |
| 32 | +import com.google.apps.meet.v2.Space; |
| 33 | +import com.google.apps.meet.v2.SpacesServiceClient; |
| 34 | +import com.google.apps.meet.v2.SpacesServiceSettings; |
| 35 | +import com.google.auth.Credentials; |
| 36 | +import com.google.auth.oauth2.ClientId; |
| 37 | +import com.google.auth.oauth2.DefaultPKCEProvider; |
| 38 | +import com.google.auth.oauth2.TokenStore; |
| 39 | +import com.google.auth.oauth2.UserAuthorizer; |
| 40 | + |
| 41 | +/* class to demonstrate use of Drive files list API */ |
| 42 | +public class MeetQuickstart { |
| 43 | + /** |
| 44 | + * Directory to store authorization tokens for this application. |
| 45 | + */ |
| 46 | + private static final String TOKENS_DIRECTORY_PATH = "tokens"; |
| 47 | + |
| 48 | + /** |
| 49 | + * Global instance of the scopes required by this quickstart. |
| 50 | + * If modifying these scopes, delete your previously saved tokens/ folder. |
| 51 | + */ |
| 52 | + private static final List<String> SCOPES = Collections |
| 53 | + .singletonList("https://www.googleapis.com/auth/meetings.space.created"); |
| 54 | + |
| 55 | + private static final String CREDENTIALS_FILE_PATH = "/credentials.json"; |
| 56 | + |
| 57 | + private static final String USER = "default"; |
| 58 | + |
| 59 | + // Simple file-based token storage for storing oauth tokens |
| 60 | + private static final TokenStore TOKEN_STORE = new TokenStore() { |
| 61 | + private Path pathFor(String id) { |
| 62 | + return Paths.get(".", TOKENS_DIRECTORY_PATH, id + ".json"); |
| 63 | + } |
| 64 | + |
| 65 | + @Override |
| 66 | + public String load(String id) throws IOException { |
| 67 | + if (!Files.exists(pathFor(id))) { |
| 68 | + return null; |
| 69 | + } |
| 70 | + return Files.readString(pathFor(id)); |
| 71 | + } |
| 72 | + |
| 73 | + @Override |
| 74 | + public void store(String id, String token) throws IOException { |
| 75 | + Files.createDirectories(Paths.get(".", TOKENS_DIRECTORY_PATH)); |
| 76 | + Files.writeString(pathFor(id), token); |
| 77 | + } |
| 78 | + |
| 79 | + @Override |
| 80 | + public void delete(String id) throws IOException { |
| 81 | + if (!Files.exists(pathFor(id))) { |
| 82 | + return; |
| 83 | + } |
| 84 | + Files.delete(pathFor(id)); |
| 85 | + } |
| 86 | + }; |
| 87 | + |
| 88 | + /** |
| 89 | + * Initialize a UserAuthorizer for local authorization. |
| 90 | + * |
| 91 | + * @param callbackUri |
| 92 | + * @return |
| 93 | + */ |
| 94 | + private static UserAuthorizer getAuthorizer(URI callbackUri) throws IOException { |
| 95 | + // Load client secrets. |
| 96 | + try (InputStream in = MeetQuickstart.class.getResourceAsStream(CREDENTIALS_FILE_PATH)) { |
| 97 | + if (in == null) { |
| 98 | + throw new FileNotFoundException("Resource not found: " + CREDENTIALS_FILE_PATH); |
| 99 | + } |
| 100 | + |
| 101 | + ClientId clientId = ClientId.fromStream(in); |
| 102 | + |
| 103 | + UserAuthorizer authorizer = UserAuthorizer.newBuilder() |
| 104 | + .setClientId(clientId) |
| 105 | + .setCallbackUri(callbackUri) |
| 106 | + .setScopes(SCOPES) |
| 107 | + .setPKCEProvider(new DefaultPKCEProvider() { |
| 108 | + // Temporary fix for https://github.com/googleapis/google-auth-library-java/issues/1373 |
| 109 | + @Override |
| 110 | + public String getCodeChallenge() { |
| 111 | + return super.getCodeChallenge().split("=")[0]; |
| 112 | + } |
| 113 | + }) |
| 114 | + .setTokenStore(TOKEN_STORE).build(); |
| 115 | + return authorizer; |
| 116 | + } |
| 117 | + } |
| 118 | + |
| 119 | + /** |
| 120 | + * Run the OAuth2 flow for local/installed app. |
| 121 | + * |
| 122 | + * @return An authorized Credential object. |
| 123 | + * @throws IOException If the credentials.json file cannot be found. |
| 124 | + */ |
| 125 | + private static Credentials getCredentials() |
| 126 | + throws Exception { |
| 127 | + |
| 128 | + LocalServerReceiver receiver = new LocalServerReceiver.Builder().build(); |
| 129 | + try { |
| 130 | + URI callbackUri = URI.create(receiver.getRedirectUri()); |
| 131 | + UserAuthorizer authorizer = getAuthorizer(callbackUri); |
| 132 | + |
| 133 | + Credentials credentials = authorizer.getCredentials(USER); |
| 134 | + if (credentials != null) { |
| 135 | + return credentials; |
| 136 | + } |
| 137 | + |
| 138 | + URL authorizationUrl = authorizer.getAuthorizationUrl(USER, "", null); |
| 139 | + if (Desktop.isDesktopSupported() && |
| 140 | + Desktop.getDesktop().isSupported(Desktop.Action.BROWSE)) { |
| 141 | + Desktop.getDesktop().browse(authorizationUrl.toURI()); |
| 142 | + } else { |
| 143 | + System.out.printf("Open the following URL to authorize access: %s\n", |
| 144 | + authorizationUrl.toExternalForm()); |
| 145 | + } |
| 146 | + |
| 147 | + String code = receiver.waitForCode(); |
| 148 | + credentials = authorizer.getAndStoreCredentialsFromCode(USER, code, callbackUri); |
| 149 | + return credentials; |
| 150 | + } finally { |
| 151 | + receiver.stop(); |
| 152 | + } |
| 153 | + } |
| 154 | + |
| 155 | + public static void main(String... args) throws Exception { |
| 156 | + // Override default service settings to supply user credentials. |
| 157 | + Credentials credentials = getCredentials(); |
| 158 | + SpacesServiceSettings settings = SpacesServiceSettings.newBuilder() |
| 159 | + .setCredentialsProvider(FixedCredentialsProvider.create(credentials)) |
| 160 | + .build(); |
| 161 | + |
| 162 | + try (SpacesServiceClient spacesServiceClient = SpacesServiceClient.create(settings)) { |
| 163 | + CreateSpaceRequest request = CreateSpaceRequest.newBuilder() |
| 164 | + .setSpace(Space.newBuilder().build()) |
| 165 | + .build(); |
| 166 | + Space response = spacesServiceClient.createSpace(request); |
| 167 | + System.out.printf("Space created: %s\n", response.getMeetingUri()); |
| 168 | + } catch (IOException e) { |
| 169 | + // TODO(developer): Handle errors |
| 170 | + e.printStackTrace(); |
| 171 | + } |
| 172 | + } |
| 173 | +} |
| 174 | +// [END meet_quickstart] |
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