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Adding Timer Variables in Mule Flows
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timer-vars.md

Adding Timer Variables in Mule Flows

Adding timer variables in Mule flows to check for performance bottlenecks.

Setting Timer Variable set-variable

<set-variable value="#[%dw 2.0 import currentMilliseconds from dw::util::Timer --- currentMilliseconds()]" 
              variableName="http_before" doc:name="http_before" mimeType="application/java"/>

Sample Logging via json-logger

Logging via json-logger custom keys.

Note:

  1. dont forget to default 0 if there is chance of timer variables not getting set in the flow due to choice blocks.
  2. wrap each var.xyz default 0 expression with brackets so that the subtraction expression evaluates correctly.
<json-logger:logger doc:name="Log End" doc:id="59b7a68f-77b6-4aa4-8a44-4496712eaa96" 
config-ref="JSON_Logger_Config" tracePoint="END" logCategory="#[vars.logCategory]" 
customKeys="#[{ http_time: (vars.http_after default 0) - (vars.http_before default 0), dwl_resp_mapper_time: (vars.dwl_resp_after default 0) - (vars.dwl_resp_before default 0) }]" />
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