kafka RemoveMembersFromConsumerGroupResult 源码
kafka RemoveMembersFromConsumerGroupResult 代码
文件路径:/clients/src/main/java/org/apache/kafka/clients/admin/RemoveMembersFromConsumerGroupResult.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.internals.KafkaFutureImpl;
import org.apache.kafka.common.message.LeaveGroupRequestData.MemberIdentity;
import org.apache.kafka.common.protocol.Errors;
import java.util.Map;
import java.util.Set;
/**
* The result of the {@link Admin#removeMembersFromConsumerGroup(String, RemoveMembersFromConsumerGroupOptions)} call.
*
* The API of this class is evolving, see {@link Admin} for details.
*/
public class RemoveMembersFromConsumerGroupResult {
private final KafkaFuture<Map<MemberIdentity, Errors>> future;
private final Set<MemberToRemove> memberInfos;
RemoveMembersFromConsumerGroupResult(KafkaFuture<Map<MemberIdentity, Errors>> future,
Set<MemberToRemove> memberInfos) {
this.future = future;
this.memberInfos = memberInfos;
}
/**
* Returns a future which indicates whether the request was 100% success, i.e. no
* either top level or member level error.
* If not, the first member error shall be returned.
*/
public KafkaFuture<Void> all() {
final KafkaFutureImpl<Void> result = new KafkaFutureImpl<>();
this.future.whenComplete((memberErrors, throwable) -> {
if (throwable != null) {
result.completeExceptionally(throwable);
} else {
if (removeAll()) {
for (Map.Entry<MemberIdentity, Errors> entry: memberErrors.entrySet()) {
Exception exception = entry.getValue().exception();
if (exception != null) {
Throwable ex = new KafkaException("Encounter exception when trying to remove: "
+ entry.getKey(), exception);
result.completeExceptionally(ex);
return;
}
}
} else {
for (MemberToRemove memberToRemove : memberInfos) {
if (maybeCompleteExceptionally(memberErrors, memberToRemove.toMemberIdentity(), result)) {
return;
}
}
}
result.complete(null);
}
});
return result;
}
/**
* Returns the selected member future.
*/
public KafkaFuture<Void> memberResult(MemberToRemove member) {
if (removeAll()) {
throw new IllegalArgumentException("The method: memberResult is not applicable in 'removeAll' mode");
}
if (!memberInfos.contains(member)) {
throw new IllegalArgumentException("Member " + member + " was not included in the original request");
}
final KafkaFutureImpl<Void> result = new KafkaFutureImpl<>();
this.future.whenComplete((memberErrors, throwable) -> {
if (throwable != null) {
result.completeExceptionally(throwable);
} else if (!maybeCompleteExceptionally(memberErrors, member.toMemberIdentity(), result)) {
result.complete(null);
}
});
return result;
}
private boolean maybeCompleteExceptionally(Map<MemberIdentity, Errors> memberErrors,
MemberIdentity member,
KafkaFutureImpl<Void> result) {
Throwable exception = KafkaAdminClient.getSubLevelError(memberErrors, member,
"Member \"" + member + "\" was not included in the removal response");
if (exception != null) {
result.completeExceptionally(exception);
return true;
} else {
return false;
}
}
private boolean removeAll() {
return memberInfos.isEmpty();
}
}
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