Migration of Kafka source configuration.

[obermeier]

Apache StreamPipes version

dev (current development state)

Affected StreamPipes components

Backend, Connect, Processing Elements, UI

What happened?

StreamPipes 0.93.0-SNAPSHOT has new attributes to configure a Kafka source like "Auto Offest Reset". If the configuration was created in 0.92.0 this attributes could not be accessed[1], which leads to errors in the UI and during runtime.

What do you think of the idea to use a default value if no other value is provided? If I see it correctly changing the value should still be possible.

[1]
streampipes-extensions-all-jvm-1 | Caused by: java.lang.NullPointerException: Cannot invoke "org.apache.streampipes.model.staticproperty.StaticPropertyAlternatives.getAlternatives()" because "alternatives" is null streampipes-extensions-all-jvm-1 | at org.apache.streampipes.sdk.extractor.AbstractParameterExtractor.selectedAlternativeInternalId(AbstractParameterExtractor.java:588) streampipes-extensions-all-jvm-1 | at org.apache.streampipes.pe.shared.config.kafka.kafka.KafkaConnectUtils.getConfig(KafkaConnectUtils.java:128) streampipes-extensions-all-jvm-1 | at org.apache.streampipes.connect.iiot.protocol.stream.KafkaProtocol.resolveConfiguration(KafkaProtocol.java:117) streampipes-extensions-all-jvm-1 | at org.apache.streampipes.extensions.management.api.RuntimeResolvableRequestHandler.handleRuntimeResponse(RuntimeResolvableRequestHandler.java:50) streampipes-extensions-all-jvm-1 | at org.apache.streampipes.rest.extensions.connect.RuntimeResolvableResource.fetchConfigurations(RuntimeResolvableResource.java:60) streampipes-extensions-all-jvm-1 | at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) streampipes-extensions-all-jvm-1 | at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) streampipes-extensions-all-jvm-1 | at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) streampipes-extensions-all-jvm-1 | at java.base/java.lang.reflect.Method.invoke(Unknown Source) streampipes-extensions-all-jvm-1 | at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:52)

How to reproduce?

Configure a SP 0.93.0 instance with a Kafka client and try to start this adapter after upgrading to 0.93.0-SNAPSHOT.
Try to configure a new adapter when the UI configuration was not reloaded from the extension service. (Should the reload part of the upgrade process?)

Expected behavior

No response

Additional technical information

No response

Are you willing to submit a PR?

Yes, I am willing to submit a PR!