| 1 | /** |
| 2 | * Licensed to jclouds, Inc. (jclouds) under one or more |
| 3 | * contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. jclouds licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
| 19 | package org.jclouds.compute.callables; |
| 20 | |
| 21 | import static com.google.common.base.Preconditions.checkNotNull; |
| 22 | import static com.google.common.base.Preconditions.checkState; |
| 23 | |
| 24 | import javax.annotation.PostConstruct; |
| 25 | import javax.annotation.Resource; |
| 26 | import javax.inject.Named; |
| 27 | |
| 28 | import org.jclouds.compute.domain.ExecResponse; |
| 29 | import org.jclouds.compute.domain.NodeMetadata; |
| 30 | import org.jclouds.compute.reference.ComputeServiceConstants; |
| 31 | import org.jclouds.logging.Logger; |
| 32 | import org.jclouds.scriptbuilder.InitBuilder; |
| 33 | import org.jclouds.ssh.SshClient; |
| 34 | |
| 35 | import com.google.common.annotations.VisibleForTesting; |
| 36 | import com.google.common.base.Function; |
| 37 | import com.google.common.base.Objects; |
| 38 | import com.google.common.base.Predicates; |
| 39 | import com.google.common.collect.ImmutableSet; |
| 40 | |
| 41 | /** |
| 42 | * |
| 43 | * @author Adrian Cole |
| 44 | */ |
| 45 | public class SudoAwareInitManager { |
| 46 | @Resource |
| 47 | @Named(ComputeServiceConstants.COMPUTE_LOGGER) |
| 48 | protected Logger computeLogger = Logger.NULL; |
| 49 | protected Logger logger = Logger.NULL; |
| 50 | protected NodeMetadata node; |
| 51 | protected final InitBuilder init; |
| 52 | protected final boolean runAsRoot; |
| 53 | protected final Function<NodeMetadata, SshClient> sshFactory; |
| 54 | protected SshClient ssh; |
| 55 | |
| 56 | public SudoAwareInitManager(Function<NodeMetadata, SshClient> sshFactory, boolean runAsRoot, NodeMetadata node, |
| 57 | InitBuilder init) { |
| 58 | this.sshFactory = checkNotNull(sshFactory, "sshFactory"); |
| 59 | this.runAsRoot = runAsRoot; |
| 60 | this.node = checkNotNull(node, "node"); |
| 61 | this.init = checkNotNull(init, "init"); |
| 62 | } |
| 63 | |
| 64 | @PostConstruct |
| 65 | public SudoAwareInitManager init() { |
| 66 | ssh = sshFactory.apply(node); |
| 67 | return this; |
| 68 | } |
| 69 | |
| 70 | public ExecResponse refreshAndRunAction(String action) { |
| 71 | checkState(ssh != null, "please call init() before invoking call"); |
| 72 | try { |
| 73 | ssh.connect(); |
| 74 | return runAction(action); |
| 75 | } finally { |
| 76 | if (ssh != null) |
| 77 | ssh.disconnect(); |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | public ExecResponse runAction(String action) { |
| 82 | ExecResponse returnVal; |
| 83 | String command = (runAsRoot && Predicates.in(ImmutableSet.of("start", "stop", "run")).apply(action)) ? execScriptAsRoot(action) |
| 84 | : execScriptAsDefaultUser(action); |
| 85 | returnVal = runCommand(command); |
| 86 | if ("status".equals(action)) |
| 87 | logger.trace("<< %s(%d)", action, returnVal.getExitCode()); |
| 88 | else if (computeLogger.isTraceEnabled()) |
| 89 | computeLogger.trace("<< %s[%s]", action, returnVal); |
| 90 | else |
| 91 | computeLogger.debug("<< %s(%d)", action, returnVal.getExitCode()); |
| 92 | return returnVal; |
| 93 | } |
| 94 | |
| 95 | ExecResponse runCommand(String command) { |
| 96 | String statement = String.format(">> running [%s] as %s@%s", command.replace( |
| 97 | node.getAdminPassword() != null ? node.getAdminPassword() : "XXXXX", "XXXXX"), ssh.getUsername(), ssh |
| 98 | .getHostAddress()); |
| 99 | if (command.endsWith("status")) |
| 100 | logger.trace(statement); |
| 101 | else |
| 102 | computeLogger.debug(statement); |
| 103 | return ssh.exec(command); |
| 104 | } |
| 105 | |
| 106 | @VisibleForTesting |
| 107 | String execScriptAsRoot(String action) { |
| 108 | String command; |
| 109 | if (node.getCredentials().identity.equals("root")) { |
| 110 | command = "./" + init.getInstanceName() + " " + action; |
| 111 | } else if (node.getAdminPassword() != null) { |
| 112 | command = String.format("echo '%s'|sudo -S ./%s %s", node.getAdminPassword(), init.getInstanceName(), action); |
| 113 | } else { |
| 114 | command = "sudo ./" + init.getInstanceName() + " " + action; |
| 115 | } |
| 116 | return command; |
| 117 | } |
| 118 | |
| 119 | protected String execScriptAsDefaultUser(String action) { |
| 120 | return "./" + init.getInstanceName() + " " + action; |
| 121 | } |
| 122 | |
| 123 | public NodeMetadata getNode() { |
| 124 | return node; |
| 125 | } |
| 126 | |
| 127 | @Override |
| 128 | public String toString() { |
| 129 | return Objects.toStringHelper(this).add("node", node).add("name", init.getInstanceName()).add("runAsRoot", |
| 130 | runAsRoot).toString(); |
| 131 | } |
| 132 | |
| 133 | public InitBuilder getStatement() { |
| 134 | return init; |
| 135 | } |
| 136 | } |