[JENKINS-67080] fix malformed json

[olamy]

Signed-off-by: Olivier Lamy [email protected]

[timja]

Could you explain the issue?

If I load: https://ci.jenkins.io/job/Core/job/jenkins/job/master/2966/testReport/history/
I can't see any errors

(it is slow, but that would be fixed by moving to the sql storage plugin most likely).

If I load your PR on my local setup the history graphs don't load and I get this error:

Uncaught SyntaxError: Unexpected token o in JSON at position 1
    at JSON.parse (<anonymous>)
    at EChartsJenkinsApi.renderZoomableTrendChart (zoomable-trend-chart.js:10)
    at history.js:17
    at onSuccess (bind.js:57)
    at klass.respondToReadyState (prototype.js:1657)
    at klass.onStateChange (prototype.js:1600)
    at XMLHttpRequest.<anonymous> (prototype.js:414)
hudson-behavior.js:2911 Uncaught SyntaxError: Unexpected token o in JSON at position 1
    at JSON.parse (<anonymous>)
    at EChartsJenkinsApi.renderZoomableTrendChart (zoomable-trend-chart.js:10)
    at history.js:25
    at onSuccess (bind.js:57)
    at klass.respondToReadyState (prototype.js:1657)
    at klass.onStateChange (prototype.js:1600)
    at XMLHttpRequest.<anonymous> (prototype.js:414)

[olamy]

that's interesting because if using mvn hpi:run I can reproduce the issue. see screenshot https://issues.jenkins.io/browse/JENKINS-67080
yeah definitely history loading performance is a huge problem as the plugin should load results in parallel.

[timja]

I was also using hpi:run