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https://issues.apache.org/jira/browse/BROOKLYN-383?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aled Sage resolved BROOKLYN-383.
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Resolution: Fixed
Assignee: Aled Sage
Fix Version/s: 0.10.0
> REST api serialization of sensor value that is a Task can cause
> StackOveflowError
> ---------------------------------------------------------------------------------
>
> Key: BROOKLYN-383
> URL: https://issues.apache.org/jira/browse/BROOKLYN-383
> Project: Brooklyn
> Issue Type: Bug
> Reporter: Aled Sage
> Assignee: Aled Sage
> Priority: Minor
> Fix For: 0.10.0
>
>
> In Brooklyn 0.10.0-SNAPSHOT...
> If a sensor value is set to be the value of an uncompleted {{Task}}, and then
> that sensor value is retrieved over json, it causes problems!
> For example, if it is an effector task, we can get the warning below (with
> 600K characters on that log line!):
> {noformat}
> 2016-11-10 11:41:30,059 WARN
> o.a.b.u.c.j.ErrorAndToStringUnknownTypeSerializer [qtp1382493-13]: Standard
> serialization not possible for class
> org.apache.brooklyn.util.core.task.DynamicSequentialTask
> (Task[sleepEffector]@dTJS4pKS)
> com.fasterxml.jackson.databind.JsonMappingException: Infinite recursion
> (StackOverflowError) (through reference chain:
> ...
> {noformat}
> For other simpler in-progress tasks, it tries to serialize everything
> reachable from the task (so we get 251K of serialized state!).
> We should not try to serialize tasks. Instead, we should return a simpler
> json object that tells us it is a task, gives us the id, and the task's
> display name.
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