debugging dont work

[cmoulliard]

Problem

The java application starts very well

/Library/Java/JavaVirtualMachines/adoptopenjdk-11.0.1.jdk/Contents/Home/bin/java -agentlib:jdwp=transport=dt_socket,address=127.0.0.1:50592,suspend=y,server=n -javaagent:/Users/dabou/Library/Caches/IntelliJIdea2019.2/captureAgent/debugger-agent.jar -Dfile.encoding=UTF-8 -classpath "/Users/dabou/Downloads/podsetoperatorinjava-master/target/classes:/Users/dabou/.m2/repository/io/fabric8/kubernetes-client/4.6.0/kubernetes-client-4.6.0.jar:/Users/dabou/.m2/repository/io/fabric8/kubernetes-model/4.6.0/kubernetes-model-4.6.0.jar:/Users/dabou/.m2/repository/io/fabric8/kubernetes-model-common/4.6.0/kubernetes-model-common-4.6.0.jar:/Users/dabou/.m2/repository/com/fasterxml/jackson/module/jackson-module-jaxb-annotations/2.9.9/jackson-module-jaxb-annotations-2.9.9.jar:/Users/dabou/.m2/repository/javax/annotation/javax.annotation-api/1.3.2/javax.annotation-api-1.3.2.jar:/Users/dabou/.m2/repository/javax/xml/bind/jaxb-api/2.3.0/jaxb-api-2.3.0.jar:/Users/dabou/.m2/repository/com/squareup/okhttp3/okhttp/3.12.0/okhttp-3.12.0.jar:/Users/dabou/.m2/repository/com/squareup/okio/okio/1.15.0/okio-1.15.0.jar:/Users/dabou/.m2/repository/com/squareup/okhttp3/logging-interceptor/3.12.0/logging-interceptor-3.12.0.jar:/Users/dabou/.m2/repository/org/slf4j/slf4j-api/1.7.26/slf4j-api-1.7.26.jar:/Users/dabou/.m2/repository/org/slf4j/jul-to-slf4j/1.7.26/jul-to-slf4j-1.7.26.jar:/Users/dabou/.m2/repository/com/fasterxml/jackson/dataformat/jackson-dataformat-yaml/2.9.9/jackson-dataformat-yaml-2.9.9.jar:/Users/dabou/.m2/repository/org/yaml/snakeyaml/1.23/snakeyaml-1.23.jar:/Users/dabou/.m2/repository/com/fasterxml/jackson/core/jackson-databind/2.9.9.3/jackson-databind-2.9.9.3.jar:/Users/dabou/.m2/repository/com/fasterxml/jackson/core/jackson-annotations/2.9.0/jackson-annotations-2.9.0.jar:/Users/dabou/.m2/repository/com/fasterxml/jackson/core/jackson-core/2.9.9/jackson-core-2.9.9.jar:/Users/dabou/.m2/repository/io/fabric8/zjsonpatch/0.3.0/zjsonpatch-0.3.0.jar:/Users/dabou/.m2/repository/com/github/mifmif/generex/1.0.2/generex-1.0.2.jar:/Users/dabou/.m2/repository/dk/brics/automaton/automaton/1.11-8/automaton-1.11-8.jar:/Applications/IntelliJ IDEA.app/Contents/lib/idea_rt.jar" io.fabric8.podset.operator.PodSetOperatorMain
Connected to the target VM, address: '127.0.0.1:50592', transport: 'socket'
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Oct 07, 2019 7:05:13 PM io.fabric8.podset.operator.controller.PodSetController run
INFO: Starting PodSet controller
Oct 07, 2019 7:05:14 PM io.fabric8.podset.operator.controller.PodSetController run
INFO: trying to fetch item from workqueue...
Oct 07, 2019 7:05:14 PM io.fabric8.podset.operator.controller.PodSetController run
INFO: Work Queue is empty

but if we want to debug, then break points is not called when a CR is deployed on ocp3.11

and logs report such information

io.fabric8.podset.operator.controller.PodSetController$1.onAdd()
Oct 07, 2019 7:05:49 PM io.fabric8.podset.operator.controller.PodSetController enqueuePodSet
INFO: enqueuePodSet(example-podset)
Oct 07, 2019 7:05:49 PM io.fabric8.podset.operator.controller.PodSetController enqueuePodSet
INFO: Going to enqueue key scoped/example-podset
Oct 07, 2019 7:05:49 PM io.fabric8.podset.operator.controller.PodSetController enqueuePodSet
INFO: Adding item to workqueue
Oct 07, 2019 7:05:49 PM io.fabric8.podset.operator.controller.PodSetController run
INFO: Got scoped/example-podset
Oct 07, 2019 7:05:49 PM io.fabric8.podset.operator.controller.PodSetController run
SEVERE: PodSet example-podset in workqueue no longer exists

Question: Do we have to perform a specific step to debug a java operator (= connected to an informer queue) ?

[rohanKanojia]

I'm not sure if any special step is required. While writing I did most of my testing on minikube. I will test this on 3.11 and get back on this.

[rohanKanojia]

Unfortunately, I could not try it out on Openshift online as I don't have access to create CRDs on the Openshift online cluster I use.

~/go/src/github.com/fabric8io/podsetoperatorinjava/src/main/resources : $ oc create -f crd.yaml 
Error from server (Forbidden): error when creating "crd.yaml": customresourcedefinitions.apiextensions.k8s.io is forbidden: User "rohanKanojia" cannot create customresourcedefinitions.apiextensions.k8s.io at the cluster scope: no RBAC policy matched
~/go/src/github.com/fabric8io/podsetoperatorinjava/src/main/resources : $ 

When I ran this on Minishift, I was able to hit breakpoint:

However, I also faced the same error. I think it is because I hardcoded namespace here:

podsetoperatorinjava/src/main/java/io/fabric8/podset/operator/controller/PodSetController.java

Lines 34 to 41 in 8faf9eb

	public PodSetController(KubernetesClient kubernetesClient, MixedOperation<PodSet, PodSetList, DoneablePodSet, Resource<PodSet, DoneablePodSet>> podSetClient, SharedIndexInformer<Pod> podInformer, SharedIndexInformer<PodSet> podSetInformer) {
	this.kubernetesClient = kubernetesClient;
	this.podSetClient = podSetClient;
	this.podSetLister = new Lister<>(podSetInformer.getIndexer(), "default");
	this.podSetInformer = podSetInformer;
	this.podLister = new Lister<>(podInformer.getIndexer(), "default");
	this.podInformer = podInformer;
	this.workqueue = new ArrayBlockingQueue<>(1024);

I think we should pick namespace either from kubeconfig or maybe as a commandline argument.