kafka Topology 源码
kafka Topology 代码
文件路径：/trogdor/src/main/java/org/apache/kafka/trogdor/common/Topology.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.trogdor.common;
import java.util.HashSet;
import java.util.Map;
import java.util.NavigableMap;
import java.util.Set;
/**
* Defines a cluster topology
*/
public interface Topology {
class Util {
/**
* Get the names of agent nodes in the topology.
*/
public static Set<String> agentNodeNames(Topology topology) {
Set<String> set = new HashSet<>();
for (Map.Entry<String, Node> entry : topology.nodes().entrySet()) {
if (entry.getValue().getConfig(Platform.Config.TROGDOR_AGENT_PORT) != null) {
set.add(entry.getKey());
}
}
return set;
}
}
/**
* Get the node with the given name.
*/
Node node(String id);
/**
* Get a sorted map of node names to nodes.
*/
NavigableMap<String, Node> nodes();
}
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