kafka DescribeProducersResult 源码
kafka DescribeProducersResult 代码
文件路径:/clients/src/main/java/org/apache/kafka/clients/admin/DescribeProducersResult.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.TopicPartition;
import org.apache.kafka.common.annotation.InterfaceStability;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ExecutionException;
@InterfaceStability.Evolving
public class DescribeProducersResult {
private final Map<TopicPartition, KafkaFuture<PartitionProducerState>> futures;
DescribeProducersResult(Map<TopicPartition, KafkaFuture<PartitionProducerState>> futures) {
this.futures = futures;
}
public KafkaFuture<PartitionProducerState> partitionResult(final TopicPartition partition) {
KafkaFuture<PartitionProducerState> future = futures.get(partition);
if (future == null) {
throw new IllegalArgumentException("Topic partition " + partition +
" was not included in the request");
}
return future;
}
public KafkaFuture<Map<TopicPartition, PartitionProducerState>> all() {
return KafkaFuture.allOf(futures.values().toArray(new KafkaFuture[0]))
.thenApply(nil -> {
Map<TopicPartition, PartitionProducerState> results = new HashMap<>(futures.size());
for (Map.Entry<TopicPartition, KafkaFuture<PartitionProducerState>> entry : futures.entrySet()) {
try {
results.put(entry.getKey(), entry.getValue().get());
} catch (InterruptedException | ExecutionException e) {
// This should be unreachable, because allOf ensured that all the futures completed successfully.
throw new KafkaException(e);
}
}
return results;
});
}
public static class PartitionProducerState {
private final List<ProducerState> activeProducers;
public PartitionProducerState(List<ProducerState> activeProducers) {
this.activeProducers = activeProducers;
}
public List<ProducerState> activeProducers() {
return activeProducers;
}
@Override
public String toString() {
return "PartitionProducerState(" +
"activeProducers=" + activeProducers +
')';
}
}
}
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