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        Sam Harbison
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Initial ListLogs sample code.
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‎logging/pom.xml‎

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.google.cloud.logging.samples</groupId>
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<artifactId>cloud-logging-samples</artifactId>
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<packaging>jar</packaging>
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<parent>
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<artifactId>doc-samples</artifactId>
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<groupId>com.google.cloud</groupId>
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<version>1.0.0</version>
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<relativePath>..</relativePath>
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</parent>
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<repositories>
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<repository>
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<id>googleapis</id>
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<url>https://google-api-client-libraries.appspot.com/mavenrepo</url>
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</repository>
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</repositories>
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<dependencies>
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<dependency>
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<groupId>com.google.apis</groupId>
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<artifactId>google-api-services-logging</artifactId>
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<version>v3beta1-rev3-1.20.0</version>
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</dependency>
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<dependency>
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<groupId>com.google.oauth-client</groupId>
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<artifactId>google-oauth-client</artifactId>
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<version>${project.oauth.version}</version>
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</dependency>
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<dependency>
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<groupId>com.google.http-client</groupId>
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<artifactId>google-http-client-jackson2</artifactId>
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<version>${project.http.version}</version>
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</dependency>
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<dependency>
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<groupId>com.google.oauth-client</groupId>
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<artifactId>google-oauth-client-jetty</artifactId>
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<version>${project.oauth.version}</version>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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</dependency>
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<dependency>
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<groupId>com.jcabi</groupId>
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<artifactId>jcabi-matchers</artifactId>
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</dependency>
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</dependencies>
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<build>
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<sourceDirectory>src/main/java</sourceDirectory>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.2</version>
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<configuration>
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<source>5</source>
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<target>5</target>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>

‎logging/src/main/java/ListLogs.java‎

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/**
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* Copyright (c) 2015 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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// [START all]
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import java.io.IOException;
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import java.io.UnsupportedEncodingException;
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import java.net.URLDecoder;
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import java.security.GeneralSecurityException;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
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import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
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import com.google.api.client.json.jackson2.JacksonFactory;
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import com.google.api.services.logging.Logging;
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import com.google.api.services.logging.model.ListLogsResponse;
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import com.google.api.services.logging.model.Log;
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/**
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* Cloud Logging Java API sample that lists the logs available to a project.
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* Uses the v1beta3 Cloud Logging API, version 1.20.0 or later.
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* See https://cloud.google.com/logging/docs/api/libraries/.
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*/
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public class ListLogs {
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private static final List<String> LOGGING_SCOPES = Collections.singletonList(
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"https://www.googleapis.com/auth/logging.read");
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private static final String APPLICATION_NAME = "ListLogs sample";
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/** Returns an authorized Cloud Logging API service client. */
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public static Logging getLoggingService() throws GeneralSecurityException,
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IOException {
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GoogleCredential credential = GoogleCredential.getApplicationDefault()
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.createScoped(LOGGING_SCOPES);
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Logging service = new Logging.Builder(
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GoogleNetHttpTransport.newTrustedTransport(),
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JacksonFactory.getDefaultInstance(),
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credential).setApplicationName(APPLICATION_NAME).build();
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return service;
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}
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/** Extract simple log names from URL-encoded resource names. */
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public static List<String> getSimpleLogNames(List<Log> logs,
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String projectId) throws UnsupportedEncodingException {
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final int RESOURCE_PREFIX_LENGTH = ("/projects/" + projectId + "/logs/")
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.length();
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List<String> logNames = new ArrayList<String>();
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for (Log log: logs) {
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logNames.add(URLDecoder.decode(log.getName(), "utf-8").substring(
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RESOURCE_PREFIX_LENGTH));
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}
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return logNames;
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}
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public static void main(String[] args) throws Exception {
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if (args.length != 1) {
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System.err.println(String.format("Usage: %s <project-name>",
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ListLogs.class.getSimpleName()));
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return;
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}
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String projectId = args[0];
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Logging service = getLoggingService();
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ListLogsResponse response = service.projects().logs().list(projectId)
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.execute();
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System.out.println("RAW: " + response.toPrettyString());
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System.out.println("SIMPLE: " +
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getSimpleLogNames(response.getLogs(), projectId));
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}
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}
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// [END all]

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