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HasMetadataOperation.java
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HasMetadataOperation.java
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/**
* Copyright (C) 2015 Red Hat, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.fabric8.kubernetes.client.dsl.base;
import java.lang.reflect.InvocationTargetException;
import java.util.concurrent.TimeUnit;
import io.fabric8.kubernetes.api.builder.Function;
import io.fabric8.kubernetes.api.model.DeletionPropagation;
import io.fabric8.kubernetes.api.model.Doneable;
import io.fabric8.kubernetes.api.model.HasMetadata;
import io.fabric8.kubernetes.api.model.KubernetesResourceList;
import io.fabric8.kubernetes.client.KubernetesClientException;
import io.fabric8.kubernetes.client.dsl.Resource;
public class HasMetadataOperation<T extends HasMetadata, L extends KubernetesResourceList<T>, D extends Doneable<T>, R extends Resource<T, D>>
extends BaseOperation< T, L, D, R> {
public static final DeletionPropagation DEFAULT_PROPAGATION_POLICY = DeletionPropagation.BACKGROUND;
public HasMetadataOperation(OperationContext ctx) {
super(ctx);
}
@Override
public D edit() {
final Function<T, T> visitor = resource -> {
try {
return patch(resource);
} catch (Exception e) {
throw KubernetesClientException.launderThrowable(forOperationType("edit"), e);
}
};
try {
T item = getMandatory();
return getDoneableType().getDeclaredConstructor(getType(), Function.class).newInstance(item, visitor);
} catch (InvocationTargetException | NoSuchMethodException | IllegalAccessException | InstantiationException e) {
throw KubernetesClientException.launderThrowable(forOperationType("edit"), e);
}
}
@Override
public T replace(T item) {
String fixedResourceVersion = getResourceVersion();
Exception caught = null;
int maxTries = 10;
for (int i = 0; i < maxTries; i++) {
try {
final String resourceVersion;
if (fixedResourceVersion != null) {
resourceVersion = fixedResourceVersion;
} else {
T got = fromServer().get();
if (got == null) {
return null;
}
if (got.getMetadata() != null) {
resourceVersion = got.getMetadata().getResourceVersion();
} else {
resourceVersion = null;
}
}
final Function<T, T> visitor = resource -> {
try {
resource.getMetadata().setResourceVersion(resourceVersion);
return handleReplace(resource);
} catch (Exception e) {
throw KubernetesClientException.launderThrowable(forOperationType("replace"), e);
}
};
D doneable = getDoneableType().getDeclaredConstructor(getType(), Function.class).newInstance(item, visitor);
return doneable.done();
} catch (KubernetesClientException e) {
caught = e;
// Only retry if there's a conflict and using dynamic resource version - this is normally to do with resource version & server updates.
if (e.getCode() != 409 || fixedResourceVersion != null) {
break;
}
if (i < maxTries - 1) {
try {
TimeUnit.SECONDS.sleep(1);
} catch (InterruptedException e1) {
// Ignore this... would only hide the proper exception
// ...but make sure to preserve the interrupted status
Thread.currentThread().interrupt();
}
}
} catch (Exception e) {
caught = e;
}
}
throw KubernetesClientException.launderThrowable(forOperationType("replace"), caught);
}
public T patch(T item) {
Exception caught = null;
int maxTries = 10;
for (int i = 0; i < maxTries; i++) {
try {
String resourceVersion;
final T got = fromServer().get();
if (got == null) {
return null;
}
if (got.getMetadata() != null) {
resourceVersion = got.getMetadata().getResourceVersion();
} else {
resourceVersion = null;
}
final Function<T, T> visitor = resource -> {
try {
resource.getMetadata().setResourceVersion(resourceVersion);
return handlePatch(got, resource);
} catch (Exception e) {
throw KubernetesClientException.launderThrowable(forOperationType("patch"), e);
}
};
D doneable = getDoneableType().getDeclaredConstructor(getType(), Function.class).newInstance(item, visitor);
return doneable.done();
} catch (KubernetesClientException e) {
caught = e;
// Only retry if there's a conflict - this is normally to do with resource version & server updates.
if (e.getCode() != 409) {
break;
}
if (i < maxTries - 1) {
try {
TimeUnit.SECONDS.sleep(1);
} catch (InterruptedException e1) {
// Ignore this... would only hide the proper exception
// ...but make sure to preserve the interrupted status
Thread.currentThread().interrupt();
}
}
} catch (Exception e) {
caught = e;
}
}
throw KubernetesClientException.launderThrowable(forOperationType("patch"), caught);
}
}