Dale LaBossiere created EDGENT-400:
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Summary: IotProvider stopApp, startApp fails due to control beans
already registered
Key: EDGENT-400
URL: https://issues.apache.org/jira/browse/EDGENT-400
Project: Edgent
Issue Type: Bug
Components: Providers
Reporter: Dale LaBossiere
Encountered the problem with a topology using poll() and a stream alias, hence
a PeriodMXBean was registered. A stop cmd (JobMXBean.stateChange(CLOSE))
leaves the control registered. A subsequent start cmd
(ApplicationServiceMXBean.submit()) fails because the control is already
registered.
{code}
top.poll(...).alias("sensorPollStream").print();
{code}
A start cmd after stopping the app yields:
{code}
SEVERE: Control id: stream:sensorPollStream already exists
Mar 22, 2017 3:03:24 PM org.apache.edgent.runtime.etiao.Executable invokeAction
SEVERE: Exception caught while invoking action: {}
java.util.concurrent.ExecutionException: java.lang.IllegalStateException
...
Caused by: java.lang.IllegalStateException
at
org.apache.edgent.runtime.jsoncontrol.JsonControlService.registerControl(JsonControlService.java:123)
at org.apache.edgent.oplet.core.PeriodicSource.start(PeriodicSource.java:57)
at org.apache.edgent.runtime.etiao.Invocation.start(Invocation.java:189)
...
{code}
I'll attach a workaround that a topology builder can utilize that mostly seems
to work.
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