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Java V2 Added a new example for CloudWatch logs for tix V1818828107 (#7512)
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‎.doc_gen/metadata/cloudwatch-logs_metadata.yaml

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@@ -11,6 +11,18 @@ cloudwatch-logs_AssociateKmsKey:
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- CloudWatchLogs.dotnetv3.AssociateKmsKeyExample
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services:
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cloudwatch-logs: {AssociateKmsKey}
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cloudwatch-logs_GetLogEvents:
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languages:
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Java:
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versions:
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- sdk_version: 2
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github: javav2/example_code/cloudwatch
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excerpts:
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- description:
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snippet_tags:
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- cloudwatch.java2.get_logs.main
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services:
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cloudwatch-logs: {GetLogEvents}
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cloudwatch-logs_CancelExportTask:
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languages:
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.NET:
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- CloudWatchLogs.dotnetv3.DescribeExportTasksExammple
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services:
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cloudwatch-logs: {DescribeExportTasks}
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cloudwatch-logs_DescribeLogStreams:
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languages:
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Java:
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versions:
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- sdk_version: 2
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github: javav2/example_code/cloudwatch
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sdkguide:
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excerpts:
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- description:
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snippet_tags:
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- cloudwatch.javav2.describe.log.streams.main
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services:
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cloudwatch-logs: {DescribeLogStreams}
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cloudwatch-logs_DescribeLogGroups:
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languages:
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.NET:

‎javav2/example_code/cloudwatch/src/main/java/com/example/cloudwatch/CloudWatchLogQuery.java

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// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
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// SPDX-License-Identifier: Apache-2.0
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package com.example.cloudwatch;
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import software.amazon.awssdk.regions.Region;
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import software.amazon.awssdk.services.cloudwatchlogs.CloudWatchLogsClient;
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import software.amazon.awssdk.services.cloudwatchlogs.model.CloudWatchLogsException;
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import software.amazon.awssdk.services.cloudwatchlogs.model.DescribeLogStreamsRequest;
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import software.amazon.awssdk.services.cloudwatchlogs.model.DescribeLogStreamsResponse;
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import software.amazon.awssdk.services.cloudwatchlogs.model.GetLogEventsRequest;
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import software.amazon.awssdk.services.cloudwatchlogs.model.GetLogEventsResponse;
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import software.amazon.awssdk.services.cloudwatchlogs.model.LogStream;
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import software.amazon.awssdk.services.cloudwatchlogs.model.OrderBy;
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import software.amazon.awssdk.services.cloudwatchlogs.model.OutputLogEvent;
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import java.util.List;
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// snippet-start:[cloudwatch.javav2.describe.log.streams.main]
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/**
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* Before running this Java V2 code example, set up your development
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* environment, including your credentials.
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* <p>
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* For more information, see the following documentation topic:
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* <p>
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* https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
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*/
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public class CloudWatchLogQuery {
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public static void main(final String[] args) {
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final String usage = """
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Usage:
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<logGroupName>
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Where:
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logGroupName - The name of the log group (for example, /aws/lambda/ChatAIHandler).
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""";
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if (args.length != 1) {
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System.out.print(usage);
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System.exit(1);
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}
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String logGroupName = "/aws/lambda/ChatAIHandler" ; //args[0];
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CloudWatchLogsClient logsClient = CloudWatchLogsClient.builder()
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.region(Region.US_EAST_1)
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.build();
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describeMostRecentLogStream(logsClient, logGroupName);
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}
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/**
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* Describes and prints metadata about the most recent log stream in the specified log group.
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*
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* @param logsClient the CloudWatchLogsClient used to interact with AWS CloudWatch Logs
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* @param logGroupName the name of the log group
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*/
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public static void describeMostRecentLogStream(CloudWatchLogsClient logsClient, String logGroupName) {
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DescribeLogStreamsRequest streamsRequest = DescribeLogStreamsRequest.builder()
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.logGroupName(logGroupName)
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.orderBy(OrderBy.LAST_EVENT_TIME)
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.descending(true)
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.limit(1)
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.build();
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try {
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DescribeLogStreamsResponse streamsResponse = logsClient.describeLogStreams(streamsRequest);
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List<LogStream> logStreams = streamsResponse.logStreams();
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if (logStreams.isEmpty()) {
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System.out.println("No log streams found for log group: " + logGroupName);
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return;
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}
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LogStream stream = logStreams.get(0);
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System.out.println("Most Recent Log Stream:");
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System.out.println(" Name: " + stream.logStreamName());
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System.out.println(" ARN: " + stream.arn());
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System.out.println(" Creation Time: " + stream.creationTime());
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System.out.println(" First Event Time: " + stream.firstEventTimestamp());
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System.out.println(" Last Event Time: " + stream.lastEventTimestamp());
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System.out.println(" Stored Bytes: " + stream.storedBytes());
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System.out.println(" Upload Sequence Token: " + stream.uploadSequenceToken());
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} catch (CloudWatchLogsException e) {
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System.err.println("Failed to describe log stream: " + e.awsErrorDetails().errorMessage());
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}
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}
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}
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// snippet-end:[cloudwatch.javav2.describe.log.streams.main]

‎javav2/example_code/cloudwatch/src/main/java/com/example/cloudwatch/GetLogEvents.java

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final String usage = """
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Usage:
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<logStreamName> <logGroupName>
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<logGroupName> <logStreamName>
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Where:
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logStreamName - The name of the log stream (for example, mystream).
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logGroupName - The name of the log group (for example, myloggroup).
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logStreamName - The name of the log stream (for example, mystream).
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""";
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if (args.length != 2) {
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System.out.print(usage);
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System.exit(1);
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}
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String logStreamName = args[0];
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String logGroupName = args[1];
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String logGroupName = args[0];
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String logStreamName = args[1];
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Region region = Region.US_WEST_2;
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CloudWatchLogsClient cloudWatchLogsClient = CloudWatchLogsClient.builder()
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.region(region)

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