kafka DescribeConfigsResult 源码
kafka DescribeConfigsResult 代码
文件路径：/clients/src/main/java/org/apache/kafka/clients/admin/DescribeConfigsResult.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 org.apache.kafka.common.config.ConfigResource;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ExecutionException;
/**
* The result of the {@link KafkaAdminClient#describeConfigs(Collection)} call.
*
* The API of this class is evolving, see {@link Admin} for details.
*/
@InterfaceStability.Evolving
public class DescribeConfigsResult {
private final Map<ConfigResource, KafkaFuture<Config>> futures;
protected DescribeConfigsResult(Map<ConfigResource, KafkaFuture<Config>> futures) {
this.futures = futures;
}
/**
* Return a map from resources to futures which can be used to check the status of the configuration for each
* resource.
*/
public Map<ConfigResource, KafkaFuture<Config>> values() {
return futures;
}
/**
* Return a future which succeeds only if all the config descriptions succeed.
*/
public KafkaFuture<Map<ConfigResource, Config>> all() {
return KafkaFuture.allOf(futures.values().toArray(new KafkaFuture[0])).
thenApply(new KafkaFuture.BaseFunction<Void, Map<ConfigResource, Config>>() {
@Override
public Map<ConfigResource, Config> apply(Void v) {
Map<ConfigResource, Config> configs = new HashMap<>(futures.size());
for (Map.Entry<ConfigResource, KafkaFuture<Config>> entry : futures.entrySet()) {
try {
configs.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 configs;
}
});
}
}
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