kafka DescribeConsumerGroupsResult 源码
kafka DescribeConsumerGroupsResult 代码
文件路径：/clients/src/main/java/org/apache/kafka/clients/admin/DescribeConsumerGroupsResult.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.KafkaFuture;
import org.apache.kafka.common.annotation.InterfaceStability;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ExecutionException;
/**
* The result of the {@link KafkaAdminClient#describeConsumerGroups(Collection, DescribeConsumerGroupsOptions)}} call.
*
* The API of this class is evolving, see {@link Admin} for details.
*/
@InterfaceStability.Evolving
public class DescribeConsumerGroupsResult {
private final Map<String, KafkaFuture<ConsumerGroupDescription>> futures;
public DescribeConsumerGroupsResult(final Map<String, KafkaFuture<ConsumerGroupDescription>> futures) {
this.futures = futures;
}
/**
* Return a map from group id to futures which yield group descriptions.
*/
public Map<String, KafkaFuture<ConsumerGroupDescription>> describedGroups() {
Map<String, KafkaFuture<ConsumerGroupDescription>> describedGroups = new HashMap<>();
futures.forEach((key, future) -> describedGroups.put(key, future));
return describedGroups;
}
/**
* Return a future which yields all ConsumerGroupDescription objects, if all the describes succeed.
*/
public KafkaFuture<Map<String, ConsumerGroupDescription>> all() {
return KafkaFuture.allOf(futures.values().toArray(new KafkaFuture[0])).thenApply(
nil -> {
Map<String, ConsumerGroupDescription> descriptions = new HashMap<>(futures.size());
futures.forEach((key, future) -> {
try {
descriptions.put(key, future.get());
} catch (InterruptedException | ExecutionException e) {
// This should be unreachable, since the KafkaFuture#allOf already ensured
// that all of the futures completed successfully.
throw new RuntimeException(e);
}
});
return descriptions;
});
}
}
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