Question

添加aws-xray-recorder-sdk-aws-sdk-instrumentor时，KCL会引发SegmentNotFoundException。

据我所知，这是因为KCL正在启动their research paper所以我对AWSXRay.beginSegment()的调用不适用于在这些线程上运行的已检测请求，但我没有直接控制这些线程所以我无法设置上下文/段。

有没有解决方法呢？

Answer 1

KCL允许提供您自己的实例化AmazonKinesis客户端，AmazonDynamoDb客户端和AmazonCloudWatch客户端。

您可以实例化自己的客户（使用own threads等），添加AmazonKinesisClientBuilder并在AWSXRay.beginSegment()上提供beforeRequest()个AWSXRay.endSegment()实例并在afterResponse()上致电class XRayTracingHandler extends TracingHandler { private final String name; XRayTracingHandler(String name) { super(AWSXRay.getGlobalRecorder()); this.name = name; } @Override public void beforeRequest(Request<?> request) { AWSXRay.beginSegment(name); super.beforeRequest(request); } @Override public void afterResponse(Request<?> request, Response<?> response) { super.afterResponse(request, response); AWSXRay.endSegment(); } }。通过这种方式，请求处理程序提供了在不同KCL ExecutorService实例创建的线程上运行您自己的用户代码的机会。

此类请求处理程序的一个示例：

  final KinesisClientLibConfiguration config = new KinesisClientLibConfiguration(
    "my-app-name",
    "my-kinesis-stream",
    new DefaultAWSCredentialsProviderChain(), UUID.randomUUID());


  final IRecordProcessorFactory recordProcessorFactory = ...


  final AmazonCloudWatch cloudWatchClient = AmazonCloudWatchClientBuilder
    .standard()
    .withRequestHandlers(new XRayTracingHandler("my-segment-listener"))
    .build();

  final AmazonKinesis kinesisClient = AmazonKinesisClientBuilder
    .standard()
    .withRequestHandlers(new XRayTracingHandler("my-segment-listener"))
    .build();

  final AmazonDynamoDB dynamoDBClient = AmazonDynamoDBClientBuilder
    .standard()
    .withRequestHandlers(new XRayTracingHandler("my-segment-listener"))
    .build();

  final Worker worker = new Worker.Builder()
    .recordProcessorFactory(recordProcessorFactory)
    .config(config)
    .kinesisClient(kinesisClient)
    .dynamoDBClient(dynamoDBClient)
    .cloudWatchClient(cloudWatchClient)
    .build();

你可以像这样使用：

{{1}}

如何将Java Kinesis Client Library与X-Ray一起使用？

1 个答案: