Util.java
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上传日期:2018-01-08
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文件大小:2k
- /*
- * Util.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.metrics.spi;
- import java.net.InetSocketAddress;
- import java.net.SocketAddress;
- import java.util.ArrayList;
- import java.util.List;
- /**
- * Static utility methods
- */
- public class Util {
-
- /**
- * This class is not intended to be instantiated
- */
- private Util() {}
-
- /**
- * 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.
- *
- * @return a list of InetSocketAddress objects.
- */
- public static List<InetSocketAddress> parse(String specs, int defaultPort) {
- List<InetSocketAddress> result = new ArrayList<InetSocketAddress>(1);
- if (specs == null) {
- result.add(new InetSocketAddress("localhost", defaultPort));
- }
- else {
- String[] specStrings = specs.split("[ ,]+");
- for (String specString : specStrings) {
- int colon = specString.indexOf(':');
- if (colon < 0 || colon == specString.length() - 1) {
- result.add(new InetSocketAddress(specString, defaultPort));
- } else {
- String hostname = specString.substring(0, colon);
- int port = Integer.parseInt(specString.substring(colon+1));
- result.add(new InetSocketAddress(hostname, port));
- }
- }
- }
- return result;
- }
-
- }