| /* |
| * 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.accumulo.cluster; |
| |
| import static java.util.Objects.requireNonNull; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.Map; |
| |
| import org.apache.hadoop.util.Shell.ShellCommandExecutor; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Execute a command, leveraging Hadoop's {@link ShellCommandExecutor}, on a remote host. SSH |
| * configuration provided by {@link RemoteShellOptions}. |
| */ |
| public class RemoteShell extends ShellCommandExecutor { |
| private static final Logger log = LoggerFactory.getLogger(RemoteShell.class); |
| |
| protected RemoteShellOptions options; |
| protected String hostname; |
| |
| public RemoteShell(String hostname, String[] execString, File dir, Map<String,String> env, |
| long timeout, RemoteShellOptions options) { |
| super(execString, dir, env, timeout); |
| this.hostname = hostname; |
| setRemoteShellOptions(options); |
| } |
| |
| public RemoteShell(String hostname, String[] execString, File dir, Map<String,String> env, |
| RemoteShellOptions options) { |
| super(execString, dir, env); |
| this.hostname = hostname; |
| setRemoteShellOptions(options); |
| } |
| |
| public RemoteShell(String hostname, String[] execString, File dir, RemoteShellOptions options) { |
| super(execString, dir); |
| this.hostname = hostname; |
| setRemoteShellOptions(options); |
| } |
| |
| public RemoteShell(String hostname, String[] execString, RemoteShellOptions options) { |
| super(execString); |
| this.hostname = hostname; |
| setRemoteShellOptions(options); |
| } |
| |
| public void setRemoteShellOptions(RemoteShellOptions options) { |
| requireNonNull(options); |
| this.options = options; |
| } |
| |
| public RemoteShellOptions getRemoteShellOptions() { |
| return options; |
| } |
| |
| @Override |
| public String[] getExecString() { |
| String hostWithUser = hostname; |
| if (!options.getUserName().isEmpty()) { |
| hostWithUser = options.getUserName() + "@" + hostWithUser; |
| } |
| |
| String remoteCmd = String.join(" ", super.getExecString()); |
| |
| String cmd = String.format("%1$s %2$s %3$s \"%4$s\"", options.getSshCommand(), |
| options.getSshOptions(), hostWithUser, remoteCmd); |
| |
| log.debug("Executing full command [{}]", cmd); |
| |
| return new String[] {"/usr/bin/env", "bash", "-c", cmd}; |
| } |
| |
| @Override |
| public void execute() throws IOException { |
| super.execute(); |
| } |
| |
| } |