org.apache.kafka.clients.admin.DescribeTopicsResult Maven / Gradle / Ivy
/*
* 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.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ExecutionException;
/**
* The result of the {@link KafkaAdminClient#describeTopics(Collection)} call.
*
* The API of this class is evolving, see {@link Admin} for details.
*/
@InterfaceStability.Evolving
public class DescribeTopicsResult {
private final Map> futures;
DescribeTopicsResult(Map> futures) {
this.futures = futures;
}
/**
* Return a map from topic names to futures which can be used to check the status of
* individual topics.
*/
public Map> values() {
return futures;
}
/**
* Return a future which succeeds only if all the topic descriptions succeed.
*/
public KafkaFuture> all() {
return KafkaFuture.allOf(futures.values().toArray(new KafkaFuture[0])).
thenApply(new KafkaFuture.BaseFunction>() {
@Override
public Map apply(Void v) {
Map descriptions = new HashMap<>(futures.size());
for (Map.Entry> entry : futures.entrySet()) {
try {
descriptions.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 RuntimeException(e);
}
}
return descriptions;
}
});
}
}