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Feature Request
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Resolution: Duplicate
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Major
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None
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3.0.16.Final
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Jersey has tracing support to easily know what is invoked and how long it takes, details in https://jersey.java.net/documentation/latest/monitoring_tracing.html#tracing
Jersey is using HTTP headers to provide such details.
Jersey example
1 $ curl -i http://localhost:9998/ALL/root/sub-resource-locator/sub-resource-method -H content-type:application/x-jersey-test --data '-=#[LKR]#=-' -H X-Jersey-Tracing-Threshold:SUMMARY -H accept:application/x-jersey-test -X POST 2 3 X-Jersey-Tracing-000: START [ ---- / ---- ms | ---- %] baseUri=[http://localhost:9998/ALL/] requestUri=[http://localhost:9998/ALL/root/sub-resource-locator/sub-resource-method] method=[POST] authScheme=[n/a] accept=[application/x-jersey-test] accept-encoding=n/a accept-charset=n/a accept-language=n/a content-type=[application/x-jersey-test] content-length=[11] 4 X-Jersey-Tracing-001: PRE-MATCH [ 0.01 / 0.68 ms | 0.01 %] PreMatchRequest summary: 2 filters 5 X-Jersey-Tracing-002: MATCH [ 8.44 / 9.15 ms | 4.59 %] RequestMatching summary 6 X-Jersey-Tracing-003: REQ-FILTER [ 0.01 / 9.20 ms | 0.00 %] Request summary: 2 filters 7 X-Jersey-Tracing-004: RI [86.14 / 95.49 ms | 46.87 %] ReadFrom summary: 3 interceptors 8 X-Jersey-Tracing-005: INVOKE [ 0.04 / 95.70 ms | 0.02 %] Resource [org.glassfish.jersey.tests.integration.tracing.SubResource @901a4f3] method=[public org.glassfish.jersey.tests.integration.tracing.Message org.glassfish.jersey.tests.integration.tracing.SubResource.postSub(org.glassfish.jersey.tests.integration.tracing.Message)] 9 X-Jersey-Tracing-006: RESP-FILTER [ 0.01 / 96.55 ms | 0.00 %] Response summary: 2 filters 10 X-Jersey-Tracing-007: WI [85.95 / 183.69 ms | 46.77 %] WriteTo summary: 4 interceptors 11 X-Jersey-Tracing-008: FINISHED [ ---- / 183.79 ms | ---- %] Response status: 200/SUCCESSFUL|OK
Please introduce similar tracing facility, not necessarily using http headers, log file is another option. Http headers are kind of rest way of doing things 
Tracing or diagnostic information about server-side processing may provide vital information when troubleshooting misbehaving RESTEasy or JAX-RS application.
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