如何使用Java获取AWS CloudWatch日志

Question

我们正在研究AWS Lambda和Cloudwatch日志。现在，我想从Cloudwatch日志中获取所有日志事件，而不使用Java的logStreamName。

由于我们以动态方式生成日志流，因此不确定如何从Cloudwatch日志组中获取所有日志。

我知道，如果我们有日志流名称，那么我们可以使用以下代码

ClientConfiguration clientConfig = getClientConfig();

AWSLogsClientBuilder builder = AWSLogsClientBuilder.standard();

AWSLogs logsClient= builder.withCredentials(new AWSStaticCredentialsProvider(new ProfileCredentialsProvider(profile).getCredentials())).withRegion(Regions.AP_SOUTHEAST_2).withClientConfiguration(clientConfig).build();

GetLogEventsRequest request = new GetLogEventsRequest()
                        .withStartTime(1531231200000L)
                        .withEndTime(1531576800000L)
                        .withLogGroupName("FlowLogs_GroupName")
                        .withLogStreamName("eni-xxxxx");

GetLogEventsResult result = logsClient.getLogEvents(request);

result.getEvents().forEach(outputLogEvent -> {
          System.out.println(outputLogEvent.getMessage());
}); 

由于这是AWS的新手，因此有人可以帮助我提供一些代码示例吗？

Answer 1

您可以用来DescribeLogStreamsRequest获取日志流名称。希望这会有所帮助

  public static void main( String[] args )
        {
            ClientConfiguration clientConfig = new ClientConfiguration();

            AWSLogsClientBuilder builder = AWSLogsClientBuilder.standard();

            AWSLogs logsClient = builder.withCredentials( new AWSStaticCredentialsProvider( new ProfileCredentialsProvider().getCredentials() ) )
                    .withRegion( Regions.AP_SOUTHEAST_2 )
                    .withClientConfiguration( clientConfig ).build();

            DescribeLogStreamsRequest describeLogStreamsRequest = new DescribeLogStreamsRequest().withLogGroupName( "FlowLogs_GroupName"  );
            DescribeLogStreamsResult describeLogStreamsResult = logsClient.describeLogStreams( describeLogStreamsRequest );

            for ( LogStream logStream : describeLogStreamsResult.getLogStreams() )
            {
                GetLogEventsRequest getLogEventsRequest = new GetLogEventsRequest()
                        .withStartTime( 1531231200000L )
                        .withEndTime( 1531576800000L )
                        .withLogGroupName( "FlowLogs_GroupName" )
                        .withLogStreamName( logStream.getLogStreamName() );

                GetLogEventsResult result = logsClient.getLogEvents( getLogEventsRequest );

                result.getEvents().forEach( outputLogEvent -> {
                    System.out.println( outputLogEvent.getMessage() );
                } );

            }
        }