CODEWITHSUNDEEP
jmeterjmeter-5.0
Enock Prince
Enock Prince

Reputation: 153

JMeter - Get header value and write in a log file

I am doing API REST Performance testing. For each API call, I have to send a unique Transaction and request ID in headers.

I use ${__UUID()} in headers, and it's working fine.

To track the transaction id in server logs, I want to print that function( ${__UUID()}) generated value in a log file with API name. For that, I have tried many ways, but those are very complicated and messy. Without adding a preprocessor can we log the value of the transaction id value from the request header?

I would be grateful if you throw some light on this.

Upvotes: 0

Views: 1277

Answers (2)

Dmitri T
Dmitri T

Reputation: 168147

If you want to have the generated GUID printed in jmeter.log file - just wrap it into __log() function like:

${__log(${__UUID()})}

enter image description here

This will both generate the GUID and print the corresponding line into jmeter.log file:

enter image description here

More information: Apache JMeter Functions - An Introduction

Upvotes: 1

Johann
Johann

Reputation: 369

I didn't understand why you don't want top use a preprocessor. I think it would be the best solution to generate the uuid in a script and store value before each request execution:

import java.util.UUID;
String uuid = UUID.randomUUID().toString();
log.info("Next uuid "+uuid);
vars.put("uuid",uuid);

Use the ${uuid} in your request header.

Upvotes: 2

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