Mock server support for rolling restart

[dkaukov]

Describe the bug

Attempt to execute rolling restart on the Mock server, failing with error: Message: Unsupported Media Type.

Fabric8 Kubernetes Client version

6.13.4

Steps to reproduce

• Configure Mock server in crud mode @EnableKubernetesMockClient(crud = true)
• Create resource, for example Deployment
• Execute rolling restart:

kubernetesClient.apps()
      .deployments()
      .inNamespace("ns")
      .withName("app01r")
      .rolling().restart();

Expected behavior

to work, ;)

Runtime

Kubernetes (vanilla)

Kubernetes API Server version

1.25.3@latest

Environment

macOS

Fabric8 Kubernetes Client Logs

io.fabric8.kubernetes.client.KubernetesClientException: Failure executing: PATCH at: https://localhost:57979/apis/apps/v1/namespaces/infra/deployments/mike-vd-server. Message: Unsupported Media Type. Received status: Status(apiVersion=v1, code=415, details=StatusDetails(causes=[], group=null, kind=Unknown, name=null, retryAfterSeconds=null, uid=null, additionalProperties={}), kind=Status, message=Unsupported Media Type, metadata=null, reason=Invalid, status=Failure, additionalProperties={}).

	at io.fabric8.kubernetes.client.KubernetesClientException.copyAsCause(KubernetesClientException.java:238)
	at io.fabric8.kubernetes.client.dsl.internal.OperationSupport.waitForResult(OperationSupport.java:507)
	at io.fabric8.kubernetes.client.dsl.internal.OperationSupport.handleResponse(OperationSupport.java:524)
	at io.fabric8.kubernetes.client.dsl.internal.OperationSupport.handlePatch(OperationSupport.java:419)
	at io.fabric8.kubernetes.client.dsl.internal.HasMetadataOperation.patch(HasMetadataOperation.java:268)
	at io.fabric8.kubernetes.client.dsl.internal.HasMetadataOperation.patch(HasMetadataOperation.java:44)
	at io.fabric8.kubernetes.client.dsl.internal.apps.v1.RollingUpdater.applyPatch(RollingUpdater.java:173)
	at io.fabric8.kubernetes.client.dsl.internal.apps.v1.RollingUpdater.restart(RollingUpdater.java:185)
	at io.fabric8.kubernetes.client.dsl.internal.apps.v1.DeploymentOperationsImpl.restart(DeploymentOperationsImpl.java:102)
	at io.fabric8.kubernetes.client.dsl.internal.apps.v1.DeploymentOperationsImpl.restart(DeploymentOperationsImpl.java:52)
	at com.opentable.instanceno.machine.KubernetesClientTest.testGetDeployment(KubernetesClientTest.java:121)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
Caused by: io.fabric8.kubernetes.client.KubernetesClientException: Failure executing: PATCH at: https://localhost:57979/apis/apps/v1/namespaces/infra/deployments/mike-vd-server. Message: Unsupported Media Type. Received status: Status(apiVersion=v1, code=415, details=StatusDetails(causes=[], group=null, kind=Unknown, name=null, retryAfterSeconds=null, uid=null, additionalProperties={}), kind=Status, message=Unsupported Media Type, metadata=null, reason=Invalid, status=Failure, additionalProperties={}).
	at io.fabric8.kubernetes.client.dsl.internal.OperationSupport.requestFailure(OperationSupport.java:660)
	at io.fabric8.kubernetes.client.dsl.internal.OperationSupport.requestFailure(OperationSupport.java:640)
	at io.fabric8.kubernetes.client.dsl.internal.OperationSupport.assertResponseCode(OperationSupport.java:589)
	at io.fabric8.kubernetes.client.dsl.internal.OperationSupport.lambda$handleResponse$0(OperationSupport.java:549)
	at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:646)
	at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510)
	at java.base/java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2147)
	at io.fabric8.kubernetes.client.http.StandardHttpClient.lambda$completeOrCancel$10(StandardHttpClient.java:141)
	at java.base/java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:863)
	at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:841)
	at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510)
	at java.base/java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2147)
	at io.fabric8.kubernetes.client.http.ByteArrayBodyHandler.onBodyDone(ByteArrayBodyHandler.java:51)
	at java.base/java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:863)
	at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:841)
	at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:510)
	at java.base/java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2147)
	at io.fabric8.kubernetes.client.okhttp.OkHttpClientImpl$OkHttpAsyncBody.doConsume(OkHttpClientImpl.java:136)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.lang.Thread.run(Thread.java:833)

Additional context

It seems like rolling restarts using application/strategic-merge-patch+json https://github.com/fabric8io/kubernetes-client/pull/2272/files, but Mock server not supporting strategic merges.

[mikebell90]

Duplicate #2516 and similar