hadoop Servers 源码
haddop Servers 代码
文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/util/Servers.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.hadoop.metrics2.util;
import java.net.InetSocketAddress;
import java.util.List;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.util.Lists;
/**
* Helpers to handle server addresses
*/
@InterfaceAudience.Public
@InterfaceStability.Evolving
public class Servers {
/**
* This class is not intended to be instantiated
*/
private Servers() {}
/**
* Parses a space and/or comma separated sequence of server specifications
* of the form <i>hostname</i> or <i>hostname:port</i>. If
* the specs string is null, defaults to localhost:defaultPort.
*
* @param specs server specs (see description)
* @param defaultPort the default port if not specified
* @return a list of InetSocketAddress objects.
*/
public static List<InetSocketAddress> parse(String specs, int defaultPort) {
List<InetSocketAddress> result = Lists.newArrayList();
if (specs == null) {
result.add(new InetSocketAddress("localhost", defaultPort));
}
else {
String[] specStrings = specs.split("[ ,]+");
for (String specString : specStrings) {
result.add(NetUtils.createSocketAddr(specString, defaultPort));
}
}
return result;
}
}
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