kafka DeleteAclsResult 源码
kafka DeleteAclsResult 代码
文件路径:/clients/src/main/java/org/apache/kafka/clients/admin/DeleteAclsResult.java
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.kafka.clients.admin;
import org.apache.kafka.common.KafkaException;
import org.apache.kafka.common.KafkaFuture;
import org.apache.kafka.common.acl.AclBinding;
import org.apache.kafka.common.acl.AclBindingFilter;
import org.apache.kafka.common.annotation.InterfaceStability;
import org.apache.kafka.common.errors.ApiException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
/**
* The result of the {@link Admin#deleteAcls(Collection)} call.
*
* The API of this class is evolving, see {@link Admin} for details.
*/
@InterfaceStability.Evolving
public class DeleteAclsResult {
/**
* A class containing either the deleted ACL binding or an exception if the delete failed.
*/
public static class FilterResult {
private final AclBinding binding;
private final ApiException exception;
FilterResult(AclBinding binding, ApiException exception) {
this.binding = binding;
this.exception = exception;
}
/**
* Return the deleted ACL binding or null if there was an error.
*/
public AclBinding binding() {
return binding;
}
/**
* Return an exception if the ACL delete was not successful or null if it was.
*/
public ApiException exception() {
return exception;
}
}
/**
* A class containing the results of the delete ACLs operation.
*/
public static class FilterResults {
private final List<FilterResult> values;
FilterResults(List<FilterResult> values) {
this.values = values;
}
/**
* Return a list of delete ACLs results for a given filter.
*/
public List<FilterResult> values() {
return values;
}
}
private final Map<AclBindingFilter, KafkaFuture<FilterResults>> futures;
DeleteAclsResult(Map<AclBindingFilter, KafkaFuture<FilterResults>> futures) {
this.futures = futures;
}
/**
* Return a map from acl filters to futures which can be used to check the status of the deletions by each
* filter.
*/
public Map<AclBindingFilter, KafkaFuture<FilterResults>> values() {
return futures;
}
/**
* Return a future which succeeds only if all the ACLs deletions succeed, and which contains all the deleted ACLs.
* Note that it if the filters don't match any ACLs, this is not considered an error.
*/
public KafkaFuture<Collection<AclBinding>> all() {
return KafkaFuture.allOf(futures.values().toArray(new KafkaFuture[0])).thenApply(v -> getAclBindings(futures));
}
private List<AclBinding> getAclBindings(Map<AclBindingFilter, KafkaFuture<FilterResults>> futures) {
List<AclBinding> acls = new ArrayList<>();
for (KafkaFuture<FilterResults> value: futures.values()) {
FilterResults results;
try {
results = value.get();
} catch (Throwable e) {
// This should be unreachable, since the future returned by KafkaFuture#allOf should
// have failed if any Future failed.
throw new KafkaException("DeleteAclsResult#all: internal error", e);
}
for (FilterResult result : results.values()) {
if (result.exception() != null)
throw result.exception();
acls.add(result.binding());
}
}
return acls;
}
}
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