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Enum fields trimmed when they shouldn't be

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#3,748 2 comentarios 0 reacciones 0 asignados Ver en GitHub

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Evaluación

Dificultad
3/5
Tiempo estimado
1-2 días
Aptitud para principiantes
48/100
Tipo de issue
Error
Claridad
Bastante claro
Estado de actividad
Estancado
Stack tecnológico
java
Área
backend

Línea de trabajo

Start by tracing how Phoebus reads and writes enum string values for PVs, focusing on where trailing whitespace may be trimmed. Reproduce the reported mismatch with an IOC enum value that ends in whitespace, using both CA and PVA if available. Done means the written value preserves the whitespace and the IOC accepts the matching choice.

Escrito por el modelo de indexación a partir del texto del issue.

Descripción

MBBO ZRST-FFST fields in an IOC can be defined with trailing whitespace, and Phoebus correctly reads these in.
However, it appears that when Phoebus writes these strings to a PV it trims the whitespace, and sends this to try and match the value with the IOC, but it no longer matches as it is missing the trailing whitespace.
This causes the following error in the IOC:

recGblRecordError: <string_to_you_tried_to_set> Illegal choice PV: <record_name>

and the following error in Phoebus (when using CA):

Exception occured, code: gov.aps.jca.CAStatus\[PUTFAIL=20,WARNING=0\]=Could not perform a database value put for that channel, message: '<record_name>'.

or if using PVA it causes a much longer error message (~700 lines). Here is a snippet of that error:

WARNING [org.csstudio.display.builder.runtime] Widget Combo Box write error for value short test
java.lang.Exception: Cannot write <string_to_you_tried_to_set> to PV pva://<record_name>
        at org.csstudio.display.builder.runtime.pv.RuntimePV.write(RuntimePV.java:114)
        at org.csstudio.display.builder.runtime.WidgetRuntime.writePrimaryPV(WidgetRuntime.java:382)
        at org.csstudio.display.builder.runtime.RuntimeUtil$1.handleWrite(RuntimeUtil.java:52)
        at org.csstudio.display.builder.representation.ToolkitRepresentation.fireWrite(ToolkitRepresentation.java:682)
        at org.csstudio.display.builder.representation.javafx.widgets.ComboRepresentation.confirm(ComboRepresentation.java:198)
        at org.csstudio.display.builder.representation.javafx.widgets.ComboRepresentation.lambda$createJFXNode$0(ComboRepresentation.java:78)
        at com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:456)
        at java.base/java.security.AccessController.doPrivileged(AccessController.java:138)
        at com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:455)
        at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
        at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
        at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:185)
        at java.base/java.lang.Thread.run(Thread.java:1447)
Caused by: java.util.concurrent.TimeoutException
        at java.base/java.util.concurrent.CompletableFuture.timedGet(CompletableFuture.java:2006)
        at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2141)
        at org.phoebus.pv.pva.PVA_PV.write(PVA_PV.java:197)
        at org.csstudio.display.builder.runtime.pv.RuntimePV.write(RuntimePV.java:110)
        ... 12 more

I would imagine removing whitespace trimming when getting Enum string values would fix this but I am not familiar with Phoebus code.

Lenguaje dominante
Java
Estrellas
130
Forks
132
Merge medio
2 d 11 h
PR fusionados (30 d)
19

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