org.argeo.core/src/org/argeo/jackrabbit/JackrabbitDataModelMigration.java

   1 package org.argeo.jackrabbit;
   2
   3 import java.awt.geom.CubicCurve2D;
   4 import java.io.IOException;
   5 import java.io.InputStreamReader;
   6 import java.io.Reader;
   7 import java.net.URL;
   8
   9 import javax.jcr.RepositoryException;
  10 import javax.jcr.Session;
  11
  12 import org.apache.commons.io.IOUtils;
  13 import org.apache.commons.logging.Log;
  14 import org.apache.commons.logging.LogFactory;
  15 import org.apache.jackrabbit.commons.cnd.CndImporter;
  16 import org.apache.jackrabbit.commons.cnd.ParseException;
  17 import org.apache.jackrabbit.core.config.RepositoryConfig;
  18 import org.apache.jackrabbit.core.fs.FileSystemException;
  19 import org.argeo.jcr.JcrCallback;
  20 import org.argeo.jcr.JcrException;
  21 import org.argeo.jcr.JcrUtils;
  22
  23 /** Migrate the data in a Jackrabbit repository. */
  24 @Deprecated
  25 public class JackrabbitDataModelMigration implements Comparable<JackrabbitDataModelMigration> {
  26         private final static Log log = LogFactory.getLog(JackrabbitDataModelMigration.class);
  27
  28         private String dataModelNodePath;
  29         private String targetVersion;
  30         private URL migrationCnd;
  31         private JcrCallback dataModification;
  32
  33         /**
  34          * Expects an already started repository with the old data model to migrate.
  35          * Expects to be run with admin rights (Repository.login() will be used).
  36          *
  37          * @return true if a migration was performed and the repository needs to be
  38          *         restarted and its caches cleared.
  39          */
  40         public Boolean migrate(Session session) {
  41                 long begin = System.currentTimeMillis();
  42                 Reader reader = null;
  43                 try {
  44                         // check if already migrated
  45                         if (!session.itemExists(dataModelNodePath)) {
  46 //                              log.warn("Node " + dataModelNodePath + " does not exist: nothing to migrate.");
  47                                 return false;
  48                         }
  49 //                      Node dataModelNode = session.getNode(dataModelNodePath);
  50 //                      if (dataModelNode.hasProperty(ArgeoNames.ARGEO_DATA_MODEL_VERSION)) {
  51 //                              String currentVersion = dataModelNode.getProperty(
  52 //                                              ArgeoNames.ARGEO_DATA_MODEL_VERSION).getString();
  53 //                              if (compareVersions(currentVersion, targetVersion) >= 0) {
  54 //                                      log.info("Data model at version " + currentVersion
  55 //                                                      + ", no need to migrate.");
  56 //                                      return false;
  57 //                              }
  58 //                      }
  59
  60                         // apply transitional CND
  61                         if (migrationCnd != null) {
  62                                 reader = new InputStreamReader(migrationCnd.openStream());
  63                                 CndImporter.registerNodeTypes(reader, session, true);
  64                                 session.save();
  65 //                              log.info("Registered migration node types from " + migrationCnd);
  66                         }
  67
  68                         // modify data
  69                         dataModification.execute(session);
  70
  71                         // apply changes
  72                         session.save();
  73
  74                         long duration = System.currentTimeMillis() - begin;
  75 //                      log.info("Migration of data model " + dataModelNodePath + " to " + targetVersion + " performed in "
  76 //                                      + duration + "ms");
  77                         return true;
  78                 } catch (RepositoryException e) {
  79                         JcrUtils.discardQuietly(session);
  80                         throw new JcrException("Migration of data model " + dataModelNodePath + " to " + targetVersion + " failed.",
  81                                         e);
  82                 } catch (ParseException | IOException e) {
  83                         JcrUtils.discardQuietly(session);
  84                         throw new RuntimeException(
  85                                         "Migration of data model " + dataModelNodePath + " to " + targetVersion + " failed.", e);
  86                 } finally {
  87                         JcrUtils.logoutQuietly(session);
  88                         IOUtils.closeQuietly(reader);
  89                 }
  90         }
  91
  92         protected static int compareVersions(String version1, String version2) {
  93                 // TODO do a proper version analysis and comparison
  94                 return version1.compareTo(version2);
  95         }
  96
  97         /** To be called on a stopped repository. */
  98         public static void clearRepositoryCaches(RepositoryConfig repositoryConfig) {
  99                 try {
 100                         String customeNodeTypesPath = "/nodetypes/custom_nodetypes.xml";
 101                         // FIXME causes weird error in Eclipse
 102                         repositoryConfig.getFileSystem().deleteFile(customeNodeTypesPath);
 103                         if (log.isDebugEnabled())
 104                                 log.debug("Cleared " + customeNodeTypesPath);
 105                 } catch (RuntimeException e) {
 106                         throw e;
 107                 } catch (RepositoryException e) {
 108                         throw new JcrException(e);
 109                 } catch (FileSystemException e) {
 110                         throw new RuntimeException("Cannot clear node types cache.",e);
 111                 }
 112
 113                 // File customNodeTypes = new File(home.getPath()
 114                 // + "/repository/nodetypes/custom_nodetypes.xml");
 115                 // if (customNodeTypes.exists()) {
 116                 // customNodeTypes.delete();
 117                 // if (log.isDebugEnabled())
 118                 // log.debug("Cleared " + customNodeTypes);
 119                 // } else {
 120                 // log.warn("File " + customNodeTypes + " not found.");
 121                 // }
 122         }
 123
 124         /*
 125          * FOR USE IN (SORTED) SETS
 126          */
 127
 128         public int compareTo(JackrabbitDataModelMigration dataModelMigration) {
 129                 // TODO make ordering smarter
 130                 if (dataModelNodePath.equals(dataModelMigration.dataModelNodePath))
 131                         return compareVersions(targetVersion, dataModelMigration.targetVersion);
 132                 else
 133                         return dataModelNodePath.compareTo(dataModelMigration.dataModelNodePath);
 134         }
 135
 136         @Override
 137         public boolean equals(Object obj) {
 138                 if (!(obj instanceof JackrabbitDataModelMigration))
 139                         return false;
 140                 JackrabbitDataModelMigration dataModelMigration = (JackrabbitDataModelMigration) obj;
 141                 return dataModelNodePath.equals(dataModelMigration.dataModelNodePath)
 142                                 && targetVersion.equals(dataModelMigration.targetVersion);
 143         }
 144
 145         @Override
 146         public int hashCode() {
 147                 return targetVersion.hashCode();
 148         }
 149
 150         public void setDataModelNodePath(String dataModelNodePath) {
 151                 this.dataModelNodePath = dataModelNodePath;
 152         }
 153
 154         public void setTargetVersion(String targetVersion) {
 155                 this.targetVersion = targetVersion;
 156         }
 157
 158         public void setMigrationCnd(URL migrationCnd) {
 159                 this.migrationCnd = migrationCnd;
 160         }
 161
 162         public void setDataModification(JcrCallback dataModification) {
 163                 this.dataModification = dataModification;
 164         }
 165
 166         public String getDataModelNodePath() {
 167                 return dataModelNodePath;
 168         }
 169
 170         public String getTargetVersion() {
 171                 return targetVersion;
 172         }
 173
 174 }