AWS SAM X射线跟踪:主动vs直通 [英] AWS SAM X-Ray Tracing: Active vs PassThrough

问题描述

AWS :: Serverless :: Function 的 Tracing 参数中的 Active 和 PassThrough 有什么区别??

What is the difference between Active and PassThrough in Tracing parameter of AWS::Serverless::Function?

PassThrough 是默认值吗?

推荐答案

该页面未声明任何有关完全是跟踪模式，所以它可能只是链接到错误的页面.

The documentation of the Tracing parameter for AWS::Serverless:Function links to a page explaining how to use AWS X-Ray with AWS Lambda. Unfortunately that page doesn't state anything about the tracing mode at all, so it's probably just linking to the wrong page.

正确的页面应该是AWS Lambda的API文档，它确实说明了

The correct page would be the API documentation of AWS Lambda which does explain what the purpose of the TracingConfig is:

模式

可以是PassThrough或Active.如果通过，Lambda只会跟踪来自上游服务的请求(如果它包含跟踪)标头为"sampled = 1".如果处于活动状态，则Lambda将遵守任何跟踪它从上游服务接收的标头.如果没有跟踪头收到后，Lambda将致电X-Ray进行追踪决定.

Can be either PassThrough or Active. If PassThrough, Lambda will only trace the request from an upstream service if it contains a tracing header with "sampled=1". If Active, Lambda will respect any tracing header it receives from an upstream service. If no tracing header is received, Lambda will call X-Ray for a tracing decision.

类型:字符串

有效值:有效 | PassThrough

必填:否

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