| 1 | /** |
| 2 | * |
| 3 | * Copyright (C) 2011 Cloud Conscious, LLC. <info@cloudconscious.com> |
| 4 | * |
| 5 | * ==================================================================== |
| 6 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | * you may not use this file except in compliance with the License. |
| 8 | * 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, software |
| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | * See the License for the specific language governing permissions and |
| 16 | * limitations under the License. |
| 17 | * ==================================================================== |
| 18 | */ |
| 19 | package org.jclouds.compute.predicates; |
| 20 | |
| 21 | import javax.annotation.Resource; |
| 22 | import javax.inject.Singleton; |
| 23 | |
| 24 | import org.jclouds.compute.domain.ExecResponse; |
| 25 | import org.jclouds.logging.Logger; |
| 26 | import org.jclouds.ssh.SshClient; |
| 27 | |
| 28 | import com.google.common.base.Predicate; |
| 29 | |
| 30 | /** |
| 31 | * |
| 32 | * Tests to if the runscript is still running |
| 33 | * |
| 34 | * @author Adrian Cole |
| 35 | */ |
| 36 | @Singleton |
| 37 | public class ScriptStatusReturnsZero implements |
| 38 | Predicate<ScriptStatusReturnsZero.CommandUsingClient> { |
| 39 | |
| 40 | @Resource |
| 41 | protected Logger logger = Logger.NULL; |
| 42 | |
| 43 | @Override |
| 44 | public boolean apply(CommandUsingClient commandUsingClient) { |
| 45 | logger.trace("looking for [%s] state on %s@%s", commandUsingClient.command, |
| 46 | commandUsingClient.client.getUsername(), commandUsingClient.client.getHostAddress()); |
| 47 | ExecResponse response = refresh(commandUsingClient); |
| 48 | while (response.getExitCode() == -1) |
| 49 | response = refresh(commandUsingClient); |
| 50 | logger.trace("%s@%s: looking for exit code 0: currently: %s", commandUsingClient.client |
| 51 | .getUsername(), commandUsingClient.client.getHostAddress(), response.getExitCode()); |
| 52 | return 0 == response.getExitCode(); |
| 53 | } |
| 54 | |
| 55 | private ExecResponse refresh(CommandUsingClient commandUsingClient) { |
| 56 | return commandUsingClient.client.exec(commandUsingClient.command); |
| 57 | } |
| 58 | |
| 59 | public static class CommandUsingClient { |
| 60 | |
| 61 | public CommandUsingClient(String command, SshClient client) { |
| 62 | this.command = command; |
| 63 | this.client = client; |
| 64 | } |
| 65 | |
| 66 | private final String command; |
| 67 | private final SshClient client; |
| 68 | } |
| 69 | } |