diff options
Diffstat (limited to 'zookeeper-server/zookeeper-server-3.9.1/src/main/java/org/apache/zookeeper/common')
-rw-r--r-- | zookeeper-server/zookeeper-server-3.9.1/src/main/java/org/apache/zookeeper/common/NetUtils.java | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/zookeeper-server/zookeeper-server-3.9.1/src/main/java/org/apache/zookeeper/common/NetUtils.java b/zookeeper-server/zookeeper-server-3.9.1/src/main/java/org/apache/zookeeper/common/NetUtils.java new file mode 100644 index 00000000000..baa69f12968 --- /dev/null +++ b/zookeeper-server/zookeeper-server-3.9.1/src/main/java/org/apache/zookeeper/common/NetUtils.java @@ -0,0 +1,94 @@ +// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root. +/* + * 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.zookeeper.common; + +import java.net.Inet6Address; +import java.net.InetAddress; +import java.net.InetSocketAddress; + +/** + * This class contains common utilities for netstuff. Like printing IPv6 literals correctly + */ +public class NetUtils { + + // Note: Changed from original to use hostname from InetSocketAddress if there exists one + public static String formatInetAddr(InetSocketAddress addr) { + String hostName = addr.getHostName(); + if (hostName != null) { + return String.format("%s:%s", hostName, addr.getPort()); + } + + InetAddress ia = addr.getAddress(); + + if (ia == null) { + return String.format("%s:%s", addr.getHostString(), addr.getPort()); + } + if (ia instanceof Inet6Address) { + return String.format("[%s]:%s", ia.getHostAddress(), addr.getPort()); + } else { + return String.format("%s:%s", ia.getHostAddress(), addr.getPort()); + } + } + + /** + * Separates host and port from given host port string if host port string is enclosed + * within square bracket. + * + * @param hostPort host port string + * @return String[]{host, port} if host port string is host:port + * or String[] {host, port:port} if host port string is host:port:port + * or String[] {host} if host port string is host + * or String[]{} if not a ipv6 host port string. + */ + public static String[] getIPV6HostAndPort(String hostPort) { + if (hostPort.startsWith("[")) { + int i = hostPort.lastIndexOf(']'); + if (i < 0) { + throw new IllegalArgumentException( + hostPort + " starts with '[' but has no matching ']'"); + } + String host = hostPort.substring(1, i); + if (host.isEmpty()) { + throw new IllegalArgumentException(host + " is empty."); + } + if (hostPort.length() > i + 1) { + return getHostPort(hostPort, i, host); + } + return new String[] { host }; + } else { + //Not an IPV6 host port string + return new String[] {}; + } + } + + private static String[] getHostPort(String hostPort, int indexOfClosingBracket, String host) { + // [127::1]:2181 , check separator : exits + if (hostPort.charAt(indexOfClosingBracket + 1) != ':') { + throw new IllegalArgumentException(hostPort + " does not have : after ]"); + } + // [127::1]: scenario + if (indexOfClosingBracket + 2 == hostPort.length()) { + throw new IllegalArgumentException(hostPort + " doesn't have a port after colon."); + } + //do not include + String port = hostPort.substring(indexOfClosingBracket + 2); + return new String[] { host, port }; + } +} |