quarkus-kubernetes-client fails to use ExecCredential when running in native mode

[Obirah]

Describe the bug

I'm developing a Quarkus application which creates resources on a Kubernetes cluster. The cluster is an EKS cluster and hence the kubeconfig on my development machine contains an exec section which calls aws eks get-token ....

When building the application in native mode and running it on my development machine, the Kubernetes client fails because it cannot deserialize the ExecConfig.

Expected behavior

The Kubernetes client provided by the quarkus-kubernetes-client extension should be able to authenticate with clusters using ExecCredential in native mode just as it is able to do so in quarkus dev mode.

Actual behavior

The Kubernetes client fails with the following error when running in native mode: Cannot construct instance of io.fabric8.kubernetes.client.Config$ExecCredential: cannot deserialize from Object value (no delegate- or property-based Creator): this appears to be a native image, in which case you may need to configure reflection for the class that is to be deserialized

How to Reproduce?

1. Create an EKS cluster
2. Issue aws eks update-kubeconfig --name <cluster-name> so that you have a kubeconfig containing the exec section on your machine.
3. Start a Quarkus app that is built in native mode and uses the kubernetes client.

Output of uname -a or ver

No response

Output of java -version

openjdk 17.0.5 2022-10-18

GraalVM version (if different from Java)

22.3.0

Quarkus version or git rev

2.15.1.Final

Build tool (ie. output of mvnw --version or gradlew --version)

Gradle 7.6

Additional information

No response

[quarkus-bot]

/cc @Sgitario(kubernetes), @geoand(kubernetes), @iocanel(kubernetes)

[geoand]

Any chance you can provide the entire stacktrace?

[Obirah]

Sure, here you go:

2023-01-03 16:52:38,903 ERROR [io.fab.kub.cli.Config] (main) Failed to parse the kubeconfig.: io.fabric8.kubernetes.client.KubernetesClientException: An error has occurred.
        at io.fabric8.kubernetes.client.utils.Serialization.unmarshal(Serialization.java:244)
        at io.fabric8.kubernetes.client.utils.Serialization.unmarshal(Serialization.java:351)
        at io.fabric8.kubernetes.client.utils.Serialization.unmarshal(Serialization.java:287)
        at io.fabric8.kubernetes.client.utils.Serialization.unmarshal(Serialization.java:272)
        at io.fabric8.kubernetes.client.Config.getExecCredentialFromExecConfig(Config.java:746)
        at io.fabric8.kubernetes.client.Config.loadFromKubeconfig(Config.java:702)
        at io.fabric8.kubernetes.client.Config.tryKubeConfig(Config.java:616)
        at io.fabric8.kubernetes.client.Config.autoConfigure(Config.java:286)
        at io.fabric8.kubernetes.client.Config.<init>(Config.java:251)
        at io.fabric8.kubernetes.client.Config.<init>(Config.java:245)
        at io.fabric8.kubernetes.client.ConfigBuilder.<init>(ConfigBuilder.java:10)
        at io.fabric8.kubernetes.client.ConfigBuilder.<init>(ConfigBuilder.java:7)
        at io.quarkus.kubernetes.client.runtime.KubernetesClientUtils.createConfig(KubernetesClientUtils.java:20)
        at io.quarkus.kubernetes.client.runtime.KubernetesConfigProducer.config(KubernetesConfigProducer.java:17)
        at io.quarkus.kubernetes.client.runtime.KubernetesConfigProducer_ProducerMethod_config_473f364c0137b02548d58c16344312a6c0709354_Bean.create(Unknown Source)
        at io.quarkus.kubernetes.client.runtime.KubernetesConfigProducer_ProducerMethod_config_473f364c0137b02548d58c16344312a6c0709354_Bean.create(Unknown Source)
        at io.quarkus.arc.impl.AbstractSharedContext.createInstanceHandle(AbstractSharedContext.java:113)
        at io.quarkus.arc.impl.AbstractSharedContext$1.get(AbstractSharedContext.java:37)
        at io.quarkus.arc.impl.AbstractSharedContext$1.get(AbstractSharedContext.java:34)
        at io.quarkus.arc.impl.LazyValue.get(LazyValue.java:26)
        at io.quarkus.arc.impl.ComputingCache.computeIfAbsent(ComputingCache.java:69)
        at io.quarkus.arc.impl.AbstractSharedContext.get(AbstractSharedContext.java:34)
        at io.quarkus.kubernetes.client.runtime.KubernetesConfigProducer_ProducerMethod_config_473f364c0137b02548d58c16344312a6c0709354_Bean.get(Unknown Source)
        at io.quarkus.kubernetes.client.runtime.KubernetesConfigProducer_ProducerMethod_config_473f364c0137b02548d58c16344312a6c0709354_Bean.get(Unknown Source)
        at io.quarkus.kubernetes.client.runtime.KubernetesClientProducer_ProducerMethod_kubernetesClient_a22f7caa17bd98380e4f38d941de1bca98b44f84_Bean.create(Unknown Source)
        at io.quarkus.kubernetes.client.runtime.KubernetesClientProducer_ProducerMethod_kubernetesClient_a22f7caa17bd98380e4f38d941de1bca98b44f84_Bean.create(Unknown Source)
        at io.quarkus.arc.impl.AbstractSharedContext.createInstanceHandle(AbstractSharedContext.java:113)
        at io.quarkus.arc.impl.AbstractSharedContext$1.get(AbstractSharedContext.java:37)
        at io.quarkus.arc.impl.AbstractSharedContext$1.get(AbstractSharedContext.java:34)
        at io.quarkus.arc.impl.LazyValue.get(LazyValue.java:26)
        at io.quarkus.arc.impl.ComputingCache.computeIfAbsent(ComputingCache.java:69)
        at io.quarkus.arc.impl.AbstractSharedContext.get(AbstractSharedContext.java:34)
        at io.quarkus.kubernetes.client.runtime.KubernetesClientProducer_ProducerMethod_kubernetesClient_a22f7caa17bd98380e4f38d941de1bca98b44f84_Bean.get(Unknown Source)
        at io.quarkus.kubernetes.client.runtime.KubernetesClientProducer_ProducerMethod_kubernetesClient_a22f7caa17bd98380e4f38d941de1bca98b44f84_Bean.get(Unknown Source)
        at de.db.mdp.awsEndpointSync.producer.KubernetesClientProducer_Bean.create(Unknown Source)
        at de.db.mdp.awsEndpointSync.producer.KubernetesClientProducer_Bean.create(Unknown Source)
        at io.quarkus.arc.impl.AbstractSharedContext.createInstanceHandle(AbstractSharedContext.java:113)
        at io.quarkus.arc.impl.AbstractSharedContext$1.get(AbstractSharedContext.java:37)
        at io.quarkus.arc.impl.AbstractSharedContext$1.get(AbstractSharedContext.java:34)
        at io.quarkus.arc.impl.LazyValue.get(LazyValue.java:26)
        at io.quarkus.arc.impl.ComputingCache.computeIfAbsent(ComputingCache.java:69)
        at io.quarkus.arc.impl.AbstractSharedContext.get(AbstractSharedContext.java:34)
        at de.db.mdp.awsEndpointSync.producer.KubernetesClientProducer_Bean.get(Unknown Source)
        at de.db.mdp.awsEndpointSync.producer.KubernetesClientProducer_Bean.get(Unknown Source)
        at de.db.mdp.awsEndpointSync.producer.KubernetesClientProducer_ProducerMethod_account_e4d40e179da98fc1e751aa0dc4e30910120a8a56_Bean.create(Unknown Source)
        at de.db.mdp.awsEndpointSync.producer.KubernetesClientProducer_ProducerMethod_account_e4d40e179da98fc1e751aa0dc4e30910120a8a56_Bean.get(Unknown Source)
        at de.db.mdp.awsEndpointSync.producer.KubernetesClientProducer_ProducerMethod_account_e4d40e179da98fc1e751aa0dc4e30910120a8a56_Bean.get(Unknown Source)
        at de.db.mdp.awsEndpointSync.sync.AwsEndpointSync_Bean.create(Unknown Source)
        at de.db.mdp.awsEndpointSync.sync.AwsEndpointSync_Bean.create(Unknown Source)
        at io.quarkus.arc.impl.AbstractSharedContext.createInstanceHandle(AbstractSharedContext.java:113)
        at io.quarkus.arc.impl.AbstractSharedContext$1.get(AbstractSharedContext.java:37)
        at io.quarkus.arc.impl.AbstractSharedContext$1.get(AbstractSharedContext.java:34)
        at io.quarkus.arc.impl.LazyValue.get(LazyValue.java:26)
        at io.quarkus.arc.impl.ComputingCache.computeIfAbsent(ComputingCache.java:69)
        at io.quarkus.arc.impl.AbstractSharedContext.get(AbstractSharedContext.java:34)
        at de.db.mdp.awsEndpointSync.sync.AwsEndpointSync_Bean.get(Unknown Source)
        at de.db.mdp.awsEndpointSync.sync.AwsEndpointSync_Bean.get(Unknown Source)
        at de.db.mdp.awsEndpointSync.AwsEndpointSyncApp_Bean.create(Unknown Source)
        at de.db.mdp.awsEndpointSync.AwsEndpointSyncApp_Bean.create(Unknown Source)
        at io.quarkus.arc.impl.AbstractSharedContext.createInstanceHandle(AbstractSharedContext.java:113)
        at io.quarkus.arc.impl.AbstractSharedContext$1.get(AbstractSharedContext.java:37)
        at io.quarkus.arc.impl.AbstractSharedContext$1.get(AbstractSharedContext.java:34)
        at io.quarkus.arc.impl.LazyValue.get(LazyValue.java:26)
        at io.quarkus.arc.impl.ComputingCache.computeIfAbsent(ComputingCache.java:69)
        at io.quarkus.arc.impl.AbstractSharedContext.get(AbstractSharedContext.java:34)
        at io.quarkus.arc.impl.ClientProxies.getApplicationScopedDelegate(ClientProxies.java:21)
        at de.db.mdp.awsEndpointSync.AwsEndpointSyncApp_ClientProxy.arc$delegate(Unknown Source)
        at de.db.mdp.awsEndpointSync.AwsEndpointSyncApp_ClientProxy.run(Unknown Source)
        at io.quarkus.runtime.ApplicationLifecycleManager.run(ApplicationLifecycleManager.java:130)
        at io.quarkus.runtime.Quarkus.run(Quarkus.java:71)
        at io.quarkus.runtime.Quarkus.run(Quarkus.java:44)
        at de.db.mdp.awsEndpointSync.AwsEndpointSyncApp$Companion.main(AwsEndpointSyncApp.kt:25)
        at de.db.mdp.awsEndpointSync.AwsEndpointSyncApp.main(AwsEndpointSyncApp.kt)
Caused by: com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `io.fabric8.kubernetes.client.Config$ExecCredential`: cannot deserialize from Object value (no delegate- or property-based Creator): this appears to be a native image, in which case you may need to configure reflection for the class that is to be deserialized
 at [Source: (BufferedInputStream); line: 1, column: 2]
        at com.fasterxml.jackson.databind.DeserializationContext.reportBadDefinition(DeserializationContext.java:1909)
        at com.fasterxml.jackson.databind.DatabindContext.reportBadDefinition(DatabindContext.java:408)
        at com.fasterxml.jackson.databind.DeserializationContext.handleMissingInstantiator(DeserializationContext.java:1349)
        at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromObjectUsingNonDefault(BeanDeserializerBase.java:1417)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:352)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:185)
        at com.fasterxml.jackson.databind.deser.DefaultDeserializationContext.readRootValue(DefaultDeserializationContext.java:323)
        at com.fasterxml.jackson.databind.ObjectReader._bindAndClose(ObjectReader.java:2105)
        at com.fasterxml.jackson.databind.ObjectReader.readValue(ObjectReader.java:1481)
        at io.fabric8.kubernetes.client.utils.Serialization.unmarshal(Serialization.java:240)
        ... 72 more

[geoand]

Great, thanks!

[geoand]

#30153 should fix the issue