kafka RemoveMembersFromConsumerGroupResult 源码

  • 2022-10-20
  • 浏览 (497)

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();
    }
}

相关信息

kafka 源码目录

相关文章

kafka AbortTransactionOptions 源码

kafka AbortTransactionResult 源码

kafka AbortTransactionSpec 源码

kafka AbstractOptions 源码

kafka Admin 源码

kafka AdminClient 源码

kafka AdminClientConfig 源码

kafka AlterClientQuotasOptions 源码

kafka AlterClientQuotasResult 源码

kafka AlterConfigOp 源码

0  赞