| /* |
| * 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.solr.cloud; |
| |
| import java.io.IOException; |
| import java.lang.invoke.MethodHandles; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * To use, tests must be able to run iptables, eg sudo chmod u+s iptables |
| */ |
| public class IpTables { |
| private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass()); |
| |
| private static final boolean ENABLED = Boolean.getBoolean("solr.tests.use.iptables"); |
| |
| private static final Set<Integer> BLOCK_PORTS = Collections.synchronizedSet(new HashSet<Integer>()); |
| |
| public static void blockPort(int port) throws IOException, InterruptedException { |
| if (ENABLED) { |
| log.info("Block port with iptables: " + port); |
| BLOCK_PORTS.add(port); |
| runCmd(("iptables -A INPUT -p tcp --dport " + port + " -j DROP") |
| .split("\\s")); |
| runCmd(("iptables -A OUTPUT -p tcp --dport " + port + " -j DROP") |
| .split("\\s")); |
| } |
| } |
| |
| public static void unblockPort(int port) throws IOException, InterruptedException { |
| if (ENABLED && BLOCK_PORTS.contains(port)) { |
| log.info("Unblock port with iptables: " + port); |
| runCmd(("iptables -D INPUT -p tcp --dport " + port + " -j DROP") |
| .split("\\s")); |
| runCmd(("iptables -D OUTPUT -p tcp --dport " + port + " -j DROP") |
| .split("\\s")); |
| BLOCK_PORTS.remove(port); |
| } |
| } |
| |
| public static void unblockAllPorts() throws IOException, InterruptedException { |
| if (ENABLED) { |
| log.info("Unblocking any ports previously blocked with iptables..."); |
| final Integer[] ports = BLOCK_PORTS.toArray(new Integer[BLOCK_PORTS.size()]); |
| for (Integer port : ports) { |
| IpTables.unblockPort(port); |
| } |
| } |
| } |
| |
| private static void runCmd(String... cmd) throws IOException, InterruptedException { |
| final int exitCode = new ProcessBuilder(cmd).inheritIO().start().waitFor(); |
| if (exitCode != 0) { |
| throw new IOException("iptables process did not exit successfully, exit code was: " + exitCode); |
| } |
| } |
| } |