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NamespaceVisitFromServerGetWatchDeleteRecreateWaitApplicableListImpl.java
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NamespaceVisitFromServerGetWatchDeleteRecreateWaitApplicableListImpl.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.internal;
import com.fasterxml.jackson.databind.ObjectMapper;
import io.fabric8.kubernetes.api.builder.VisitableBuilder;
import io.fabric8.kubernetes.api.builder.Visitor;
import io.fabric8.kubernetes.api.model.DeletionPropagation;
import io.fabric8.kubernetes.api.model.HasMetadata;
import io.fabric8.kubernetes.api.model.KubernetesList;
import io.fabric8.kubernetes.api.model.KubernetesResourceList;
import io.fabric8.kubernetes.api.model.StatusDetails;
import io.fabric8.kubernetes.client.Client;
import io.fabric8.kubernetes.client.KubernetesClient;
import io.fabric8.kubernetes.client.KubernetesClientException;
import io.fabric8.kubernetes.client.KubernetesClientTimeoutException;
import io.fabric8.kubernetes.client.dsl.DeletableWithOptions;
import io.fabric8.kubernetes.client.dsl.Gettable;
import io.fabric8.kubernetes.client.dsl.ListVisitFromServerGetDeleteRecreateWaitApplicable;
import io.fabric8.kubernetes.client.dsl.ListVisitFromServerWritable;
import io.fabric8.kubernetes.client.dsl.NamespaceListVisitFromServerGetDeleteRecreateWaitApplicable;
import io.fabric8.kubernetes.client.dsl.NamespaceableResource;
import io.fabric8.kubernetes.client.dsl.ParameterNamespaceListVisitFromServerGetDeleteRecreateWaitApplicable;
import io.fabric8.kubernetes.client.dsl.Resource;
import io.fabric8.kubernetes.client.dsl.Waitable;
import io.fabric8.kubernetes.client.readiness.Readiness;
import io.fabric8.kubernetes.client.utils.Serialization;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class NamespaceVisitFromServerGetWatchDeleteRecreateWaitApplicableListImpl
implements ParameterNamespaceListVisitFromServerGetDeleteRecreateWaitApplicable<HasMetadata>,
Waitable<List<HasMetadata>, HasMetadata> {
private static final Logger LOGGER = LoggerFactory
.getLogger(NamespaceVisitFromServerGetWatchDeleteRecreateWaitApplicableListImpl.class);
protected static final String EXPRESSION = "expression";
protected static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
private OperationContext context;
public NamespaceVisitFromServerGetWatchDeleteRecreateWaitApplicableListImpl(OperationContext context) {
this.context = context;
}
public NamespaceVisitFromServerGetWatchDeleteRecreateWaitApplicableListImpl(Client client, Object item) {
this(HasMetadataOperationsImpl.defaultContext(client).withItem(item));
}
@Override
public List<HasMetadata> waitUntilReady(final long amount, final TimeUnit timeUnit) {
return waitUntilCondition(resource -> Objects.nonNull(resource) && getReadiness().isReady(resource), amount, timeUnit);
}
List<HasMetadata> getItems() {
Object item = context.getItem();
if (item instanceof InputStream) {
item = Serialization.unmarshal((InputStream) item, Collections.emptyMap());
context = context.withItem(item); // late realization of the inputstream
}
return asHasMetadata(item).stream()
.map(meta -> acceptVisitors(meta,
Collections.emptyList(), this.context))
.collect(Collectors.toList());
}
@Override
public Stream<NamespaceableResource<HasMetadata>> resources() {
return getItems().stream()
.map(this::getResource);
}
public List<NamespaceableResource<io.fabric8.kubernetes.api.model.HasMetadata>> getResources() {
return resources().collect(Collectors.toList());
}
/**
* similar to {@link KubernetesClient#resource(HasMetadata)}, but we want to inherit the context
* The namespacing is the same - use the item namespace if available
*/
NamespaceableResource<HasMetadata> getResource(HasMetadata meta) {
return context.clientInWriteContext(KubernetesClient.class).resource(meta);
}
@Override
public List<HasMetadata> waitUntilCondition(Predicate<HasMetadata> condition,
long amount,
TimeUnit timeUnit) {
List<? extends Resource<HasMetadata>> operations = getResources();
if (operations.isEmpty()) {
return Collections.emptyList();
}
List<HasMetadata> items = operations.stream().map(Resource::get).collect(Collectors.toList());
final List<CompletableFuture<List<HasMetadata>>> futures = new ArrayList<>(items.size());
for (final Resource<HasMetadata> impl : operations) {
CompletableFuture<List<HasMetadata>> futureCondition = impl.informOnCondition(l -> {
if (l.isEmpty()) {
return condition.test(null);
}
return condition.test(l.get(0));
});
futures.add(futureCondition);
}
final List<HasMetadata> results = new ArrayList<>();
final List<HasMetadata> itemsWithConditionNotMatched = new ArrayList<>();
long finish = System.nanoTime() + timeUnit.toNanos(amount);
for (int i = 0; i < items.size(); i++) {
final HasMetadata meta = items.get(i);
CompletableFuture<List<HasMetadata>> future = futures.get(i);
try {
results.add(future.thenApply(l -> l.isEmpty() ? null : l.get(0)).get(Math.max(0, finish - System.nanoTime()),
TimeUnit.NANOSECONDS));
} catch (TimeoutException e) {
itemsWithConditionNotMatched.add(meta);
logAsNotReady(e, meta);
} catch (ExecutionException e) {
itemsWithConditionNotMatched.add(meta);
logAsNotReady(e.getCause(), meta);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw KubernetesClientException.launderThrowable(e);
} finally {
future.cancel(true);
}
}
if (!itemsWithConditionNotMatched.isEmpty()) {
throw new KubernetesClientTimeoutException(itemsWithConditionNotMatched, amount, timeUnit);
}
return results;
}
private static void logAsNotReady(Throwable t, HasMetadata meta) {
LOGGER.warn(
"Error while waiting for: [{}] with name: [{}] in namespace: [{}]: {}. The resource will be considered not ready.",
meta.getKind(), meta.getMetadata().getName(), meta.getMetadata().getNamespace(), t.getMessage());
LOGGER.debug("The error stack trace:", t);
}
@Override
public NamespaceListVisitFromServerGetDeleteRecreateWaitApplicable<HasMetadata> withParameters(
Map<String, String> parameters) {
Object item = Serialization.unmarshal((InputStream) context.getItem(), parameters);
return newInstance(context.withItem(item));
}
@Override
public ListVisitFromServerWritable<HasMetadata> dryRun(boolean isDryRun) {
return newInstance(this.context.withDryRun(isDryRun));
}
@Override
public ListVisitFromServerWritable<HasMetadata> fieldValidation(Validation fieldValidation) {
return newInstance(this.context.withFieldValidation(fieldValidation));
}
@Override
public List<HasMetadata> createOrReplace() {
List<? extends Resource<HasMetadata>> operations = getResources();
return operations.stream()
.map(Resource::createOrReplace)
.filter(Objects::nonNull)
.collect(Collectors.toList());
}
@Override
public List<StatusDetails> delete() {
List<StatusDetails> deleted = resources().flatMap(r -> r.delete().stream()).collect(Collectors.toList());
BaseOperation.waitForDelete(deleted, this.context, this);
return deleted;
}
@Override
public List<HasMetadata> get() {
return performOperation(Resource::get);
}
@Override
public ListVisitFromServerGetDeleteRecreateWaitApplicable<HasMetadata> inNamespace(String explicitNamespace) {
if (explicitNamespace == null) {
throw new KubernetesClientException("namespace cannot be null");
}
return newInstance(context.withNamespace(explicitNamespace));
}
@Override
public Gettable<List<HasMetadata>> fromServer() {
return newInstance(context.withReloadingFromServer(true));
}
@Override
public ListVisitFromServerGetDeleteRecreateWaitApplicable<HasMetadata> accept(Visitor... visitors) {
return newInstance(context.withItem(getItems().stream()
.map(i -> acceptVisitors(i, Arrays.asList(visitors), context))
.collect(Collectors.toList())));
}
@Override
public ListVisitFromServerGetDeleteRecreateWaitApplicable<HasMetadata> withGracePeriod(long gracePeriodSeconds) {
return newInstance(context.withGracePeriodSeconds(gracePeriodSeconds));
}
@Override
public ListVisitFromServerGetDeleteRecreateWaitApplicable<HasMetadata> withPropagationPolicy(
DeletionPropagation propagationPolicy) {
return newInstance(context.withPropagationPolicy(propagationPolicy));
}
protected Readiness getReadiness() {
return Readiness.getInstance();
}
protected List<HasMetadata> asHasMetadata(Object item) {
List<HasMetadata> result = new ArrayList<>();
if (item instanceof KubernetesList) {
result.addAll(((KubernetesList) item).getItems());
} else if (item instanceof KubernetesResourceList) {
result.addAll(((KubernetesResourceList) item).getItems());
} else if (item instanceof HasMetadata) {
result.add((HasMetadata) item);
} else if (item instanceof String) {
return asHasMetadata(Serialization.unmarshal((String) item));
} else if (item instanceof Collection) {
for (Object o : (Collection) item) {
if (o instanceof HasMetadata) {
result.add((HasMetadata) o);
}
}
} else if (item != null) {
throw new IllegalArgumentException("Could not convert item to a list of HasMetadata");
}
return result;
}
public NamespaceVisitFromServerGetWatchDeleteRecreateWaitApplicableListImpl newInstance(OperationContext context) {
return new NamespaceVisitFromServerGetWatchDeleteRecreateWaitApplicableListImpl(context);
}
static HasMetadata acceptVisitors(HasMetadata item, List<Visitor> visitors, OperationContext context) {
if (!visitors.isEmpty()) {
VisitableBuilder<HasMetadata, ?> builder = context.getHandler(item).edit(item);
//Let's apply any visitor that might have been specified.
for (Visitor v : visitors) {
builder.accept(v);
}
item = builder.build();
}
return item;
}
@Override
public List<HasMetadata> create() {
return performOperation(Resource::create);
}
@Override
public ListVisitFromServerWritable<HasMetadata> dryRun() {
return dryRun(true);
}
@Override
public ListVisitFromServerGetDeleteRecreateWaitApplicable<HasMetadata> inAnyNamespace() {
return newInstance(context.withNamespace(null));
}
@Override
public List<HasMetadata> replace() {
return performOperation(Resource::replace);
}
private List<HasMetadata> performOperation(
Function<? super NamespaceableResource<HasMetadata>, ? extends HasMetadata> operation) {
return getResources().stream().map(operation).collect(Collectors.toList());
}
@Override
public List<HasMetadata> replaceStatus() {
return performOperation(Resource::replaceStatus);
}
@Override
public DeletableWithOptions withTimeout(long timeout, TimeUnit unit) {
return newInstance(context.withTimeout(timeout, unit));
}
@Override
public DeletableWithOptions withTimeoutInMillis(long timeoutInMillis) {
return this.withTimeout(timeoutInMillis, TimeUnit.MILLISECONDS);
}
}