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1   /*
2    * SymmetricDS is an open source database synchronization solution.
3    *   
4    * Copyright (C) Eric Long <erilong@users.sourceforge.net>
5    *
6    * This library is free software; you can redistribute it and/or
7    * modify it under the terms of the GNU Lesser General Public
8    * License as published by the Free Software Foundation; either
9    * version 3 of the License, or (at your option) any later version.
10   *
11   * This library is distributed in the hope that it will be useful,
12   * but WITHOUT ANY WARRANTY; without even the implied warranty of
13   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14   * Lesser General Public License for more details.
15   *
16   * You should have received a copy of the GNU Lesser General Public
17   * License along with this library; if not, see
18   * <http://www.gnu.org/licenses/>.
19   */
20  
21  package org.jumpmind.symmetric.service.impl;
22  
23  import java.util.List;
24  import java.util.Map;
25  
26  import org.apache.commons.lang.StringUtils;
27  import org.apache.commons.logging.Log;
28  import org.apache.commons.logging.LogFactory;
29  import org.jumpmind.symmetric.Version;
30  import org.jumpmind.symmetric.model.Node;
31  import org.jumpmind.symmetric.service.INodeService;
32  import org.jumpmind.symmetric.service.IUpgradeService;
33  import org.jumpmind.symmetric.upgrade.IUpgradeTask;
34  
35  public class UpgradeService extends AbstractService implements IUpgradeService {
36  
37      private static final Log logger = LogFactory.getLog(UpgradeService.class);
38  
39      private INodeService nodeService;
40  
41      private Map<String, List<IUpgradeTask>> upgradeTaskMap;
42  
43      public boolean isUpgradeNecessary() {
44          boolean isUpgradeNecessary = false;
45          Node node = nodeService.findIdentity();
46          if (node != null && !StringUtils.isBlank(node.getSymmetricVersion()) && !node.getSymmetricVersion().equals("development")) {
47              if (Version.isOlderMinorVersion(node.getSymmetricVersion())) {
48                  isUpgradeNecessary = true;
49              }
50          }
51          return isUpgradeNecessary;
52      }
53  
54      public void upgrade() {
55          Node node = nodeService.findIdentity();
56          if (node != null) {
57              int[] fromVersion = Version.parseVersion(node.getSymmetricVersion());
58  
59              if (Version.isOlderMinorVersion(node.getSymmetricVersion())) {
60                  runUpgrade(node, fromVersion);
61                  node.setSymmetricVersion(Version.version());
62                  nodeService.updateNode(node);
63              }
64          } else {
65              logger.warn("Cannot upgrade an unregistered node");
66          }
67      }
68  
69      private void runUpgrade(Node node, int[] fromVersion) {
70          String majorMinorVersion = fromVersion[0] + "." + fromVersion[1];
71          List<IUpgradeTask> upgradeTaskList = upgradeTaskMap.get(majorMinorVersion);
72          logger.warn("Starting upgrade from version " + majorMinorVersion + " to " + Version.version());
73          boolean isRegistrationServer = StringUtils.isEmpty(parameterService.getRegistrationUrl());
74          if (upgradeTaskList != null) {
75              for (IUpgradeTask upgradeTask : upgradeTaskList) {
76                  if ((isRegistrationServer && upgradeTask.isUpgradeRegistrationServer())
77                          || (!isRegistrationServer && upgradeTask.isUpgradeNonRegistrationServer())) {
78                      upgradeTask.upgrade(node, fromVersion);
79                  }
80              }
81          }
82          logger.warn("Completed upgrade");
83      }
84  
85      public void setUpgradeTaskMap(Map<String, List<IUpgradeTask>> upgradeTaskMap) {
86          this.upgradeTaskMap = upgradeTaskMap;
87      }
88  
89      public void setNodeService(INodeService nodeService) {
90          this.nodeService = nodeService;
91      }
92  
93  }