KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > com > caucho > server > deploy > StartManualRedeployManualStrategy


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  *
23  * Free Software Foundation, Inc.
24  * 59 Temple Place, Suite 330
25  * Boston, MA 02111-1307 USA
26  *
27  * @author Scott Ferguson
28  */
29
30 package com.caucho.server.deploy;
31
32 /**
33  * The start-mode="manual", redeploy-model="manual" controller strategy.
34  *
35  * initial state = stop
36  *
37  * <table>
38  * <tr><th>input <th>stopped <th>active <th>modified <th>error
39  * <tr><td>start <td>startImpl<td>- <td>restartImpl<td>restartImpl
40  * <tr><td>update <td>startImpl<td>- <td>restartImpl<td>restartImpl
41  * <tr><td>stop <td>- <td>stopImpl<td>stopImpl <td>stopImpl
42  * <tr><td>request<td>- <td>- <td>- <td>-
43  * <tr><td>include<td>- <td>- <td>- <td>-
44  * <tr><td>alarm <td>- <td>- <td>- <td>-
45  * </table>
46  */
47 public class StartManualRedeployManualStrategy
48   extends AbstractDeployControllerStrategy {
49   private final static StartManualRedeployManualStrategy STRATEGY =
50           new StartManualRedeployManualStrategy();
51
52   protected StartManualRedeployManualStrategy()
53   {
54   }
55
56   /**
57    * Returns the start="lazy" redeploy="automatic" strategy
58    *
59    * @return the singleton strategy
60    */
61   public static DeployControllerStrategy create()
62   {
63     return STRATEGY;
64   }
65   
66   /**
67    * Called at initialization time for automatic start.
68    *
69    * @param controller the owning controller
70    */
71   public<I extends DeployInstance>
72     void startOnInit(DeployController<I> controller)
73   {
74     controller.stopImpl();
75   }
76
77   /**
78    * Checks for updates from an admin command. The target state will be the
79    * initial state, i.e. update will not start a lazy instance.
80    *
81    * @param controller the owning controller
82    */
83   public<I extends DeployInstance>
84     void update(DeployController<I> controller)
85   {
86     if (controller.isStopped()) {
87       controller.startImpl();
88     }
89     else if (controller.isModifiedNow()) {
90       controller.restartImpl();
91     }
92     else if (controller.isError()) {
93       controller.restartImpl();
94     }
95     else { /* active */
96     }
97   }
98
99
100   /**
101    * Returns the current instance. This strategy does not lazily restart
102    * the instance.
103    *
104    * @param controller the owning controller
105    * @return the current deploy instance
106    */
107   /* XXX: should request always return an instance? */
108   public <I extends DeployInstance>
109           I request(DeployController<I> controller)
110   {
111     return controller.getDeployInstance();
112   }
113
114   /**
115    * Returns the current instance. This strategy does not lazily restart
116    * the instance.
117    *
118    * @param controller the owning controller
119    * @return the current deploy instance
120    */
121   /* XXX: should request always return an instance? */
122   public <I extends DeployInstance>
123           I subrequest(DeployController<I> controller)
124   {
125     return controller.getDeployInstance();
126   }
127
128   /**
129    * Returns the current instance. This strategy does not lazily restart
130    * the instance.
131    *
132    * @param controller the owning controller
133    */
134   /* XXX: should request always return an instance? */
135   public <I extends DeployInstance>
136           void alarm(DeployController<I> controller)
137   {
138   }
139 }
140
Popular Tags