NPE in ssa matching when resource claim is missing in the spec #3034
Description
Bug Report
What did you do?
Reconciling a StatefulSet which seems to be missing resource requirement claims, results in a null pointer exception.
More investigation is needed on why the statefulset is in this state.
What did you expect to see?
No NPE.
What did you see instead? Under which circumstances?
An NPE (reproduced against main):
java.lang.NullPointerException: Cannot invoke "java.util.List.size()" because "values" is null
at io.javaoperatorsdk.operator.processing.dependent.kubernetes.SSABasedGenericKubernetesResourceMatcher.selectListEntryBasedOnKey(SSABasedGenericKubernetesResourceMatcher.java:352)
at io.javaoperatorsdk.operator.processing.dependent.kubernetes.SSABasedGenericKubernetesResourceMatcher.handleListKeyEntrySet(SSABasedGenericKubernetesResourceMatcher.java:331)
at io.javaoperatorsdk.operator.processing.dependent.kubernetes.SSABasedGenericKubernetesResourceMatcher.keepOnlyManagedFields(SSABasedGenericKubernetesResourceMatcher.java:247)
at io.javaoperatorsdk.operator.processing.dependent.kubernetes.SSABasedGenericKubernetesResourceMatcher.fillResultsAndTraverseFurther(SSABasedGenericKubernetesResourceMatcher.java:424)
at io.javaoperatorsdk.operator.processing.dependent.kubernetes.SSABasedGenericKubernetesResourceMatcher.keepOnlyManagedFields(SSABasedGenericKubernetesResourceMatcher.java:252)
at io.javaoperatorsdk.operator.processing.dependent.kubernetes.SSABasedGenericKubernetesResourceMatcher.lambda$5(SSABasedGenericKubernetesResourceMatcher.java:341)
at java.base/java.util.TreeMap.forEach(TreeMap.java:1317)
at io.javaoperatorsdk.operator.processing.dependent.kubernetes.SSABasedGenericKubernetesResourceMatcher.handleListKeyEntrySet(SSABasedGenericKubernetesResourceMatcher.java:337)
at io.javaoperatorsdk.operator.processing.dependent.kubernetes.SSABasedGenericKubernetesResourceMatcher.keepOnlyManagedFields(SSABasedGenericKubernetesResourceMatcher.java:247)
at io.javaoperatorsdk.operator.processing.dependent.kubernetes.SSABasedGenericKubernetesResourceMatcher.fillResultsAndTraverseFurther(SSABasedGenericKubernetesResourceMatcher.java:424)
at io.javaoperatorsdk.operator.processing.dependent.kubernetes.SSABasedGenericKubernetesResourceMatcher.keepOnlyManagedFields(SSABasedGenericKubernetesResourceMatcher.java:252)
at io.javaoperatorsdk.operator.processing.dependent.kubernetes.SSABasedGenericKubernetesResourceMatcher.fillResultsAndTraverseFurther(SSABasedGenericKubernetesResourceMatcher.java:424)
at io.javaoperatorsdk.operator.processing.dependent.kubernetes.SSABasedGenericKubernetesResourceMatcher.keepOnlyManagedFields(SSABasedGenericKubernetesResourceMatcher.java:252)
at io.javaoperatorsdk.operator.processing.dependent.kubernetes.SSABasedGenericKubernetesResourceMatcher.fillResultsAndTraverseFurther(SSABasedGenericKubernetesResourceMatcher.java:424)
at io.javaoperatorsdk.operator.processing.dependent.kubernetes.SSABasedGenericKubernetesResourceMatcher.keepOnlyManagedFields(SSABasedGenericKubernetesResourceMatcher.java:252)
at io.javaoperatorsdk.operator.processing.dependent.kubernetes.SSABasedGenericKubernetesResourceMatcher.matches(SSABasedGenericKubernetesResourceMatcher.java:105)
at io.javaoperatorsdk.operator.processing.dependent.kubernetes.SSABasedGenericKubernetesResourceMatcherTest.testIssue(SSABasedGenericKubernetesResourceMatcherTest.java:59)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
Environment
Kubernetes cluster type:
OKD 4.18 (v1.31.5)
$ Mention java-operator-sdk version from pom.xml file
$ java -version
$ kubectl version