How to set a fixed value for the sw8-correlation field of the agent request header

[bongmu]

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Question

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  HI,
  In order to adapt to our system, I need to modify on the basis of the skywalking agent source code, and set the sw8-correlation field to a fixed value. How do I modify it and which file should I modify? Can anyone guide me?

[wu-sheng]

I am not sure what do you mean adopting your system, could you be more clear?

[bongmu]

It’s the api interface of one of our customers, we can’t change it

[wu-sheng]

The only temp fix in my mind is removing the whole correlation header.

[bongmu]

thanks，Yeah is very happy to hear that there is a temporary repair method, can you tell me which file code should be modified?

[wu-sheng]

Remove SW8CorrelationCarrierItem from ContextCarrier#items().

[bongmu]

located apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/context/ContextCarrier.java

remove The following code in public CarrierItem items() ：

SW8CorrelationCarrierItem sw8CorrelationCarrierItem = new SW8CorrelationCarrierItem(
correlationContext, sw8ExtensionCarrierItem);

Is it?

[bongmu]

The problem has been solved, thank you