X-Git-Url: http://git.argeo.org/?a=blobdiff_plain;f=org.argeo.server.jackrabbit%2Fsrc%2Fmain%2Fjava%2Forg%2Fargeo%2Fjackrabbit%2FJackrabbitDataModelMigration.java;fp=org.argeo.server.jackrabbit%2Fsrc%2Fmain%2Fjava%2Forg%2Fargeo%2Fjackrabbit%2FJackrabbitDataModelMigration.java;h=401b34df626a8438e485384a75a0b5f91cba491c;hb=1df1bf64759d35d3d72b9d96b26b71118fdbe031;hp=0000000000000000000000000000000000000000;hpb=3a3d316af102ba410d1d9e6de349d0c8f7ac044f;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.server.jackrabbit/src/main/java/org/argeo/jackrabbit/JackrabbitDataModelMigration.java b/org.argeo.server.jackrabbit/src/main/java/org/argeo/jackrabbit/JackrabbitDataModelMigration.java
new file mode 100644
index 000000000..401b34df6
--- /dev/null
+++ b/org.argeo.server.jackrabbit/src/main/java/org/argeo/jackrabbit/JackrabbitDataModelMigration.java
@@ -0,0 +1,182 @@
+/*
+ * Copyright (C) 2007-2012 Argeo GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.argeo.jackrabbit;
+
+import java.io.InputStreamReader;
+import java.io.Reader;
+
+import javax.jcr.Node;
+import javax.jcr.Session;
+
+import org.apache.commons.io.IOUtils;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.jackrabbit.commons.cnd.CndImporter;
+import org.apache.jackrabbit.core.config.RepositoryConfig;
+import org.argeo.ArgeoException;
+import org.argeo.jcr.ArgeoNames;
+import org.argeo.jcr.JcrCallback;
+import org.argeo.jcr.JcrUtils;
+import org.springframework.core.io.Resource;
+
+/** Migrate the data in a Jackrabbit repository. */
+public class JackrabbitDataModelMigration implements
+		Comparable<JackrabbitDataModelMigration> {
+	private final static Log log = LogFactory
+			.getLog(JackrabbitDataModelMigration.class);
+
+	private String dataModelNodePath;
+	private String targetVersion;
+	private Resource migrationCnd;
+	private JcrCallback dataModification;
+
+	/**
+	 * Expects an already started repository with the old data model to migrate.
+	 * Expects to be run with admin rights (Repository.login() will be used).
+	 * 
+	 * @return true if a migration was performed and the repository needs to be
+	 *         restarted and its caches cleared.
+	 */
+	public Boolean migrate(Session session) {
+		long begin = System.currentTimeMillis();
+		Reader reader = null;
+		try {
+			// check if already migrated
+			if (!session.itemExists(dataModelNodePath)) {
+				log.warn("Node " + dataModelNodePath
+						+ " does not exist: nothing to migrate.");
+				return false;
+			}
+			Node dataModelNode = session.getNode(dataModelNodePath);
+			if (dataModelNode.hasProperty(ArgeoNames.ARGEO_DATA_MODEL_VERSION)) {
+				String currentVersion = dataModelNode.getProperty(
+						ArgeoNames.ARGEO_DATA_MODEL_VERSION).getString();
+				if (compareVersions(currentVersion, targetVersion) >= 0) {
+					log.info("Data model at version " + currentVersion
+							+ ", no need to migrate.");
+					return false;
+				}
+			}
+
+			// apply transitional CND
+			if (migrationCnd != null) {
+				reader = new InputStreamReader(migrationCnd.getInputStream());
+				CndImporter.registerNodeTypes(reader, session, true);
+				session.save();
+				log.info("Registered migration node types from " + migrationCnd);
+			}
+
+			// modify data
+			dataModification.execute(session);
+
+			// apply changes
+			session.save();
+
+			long duration = System.currentTimeMillis() - begin;
+			log.info("Migration of data model " + dataModelNodePath + " to "
+					+ targetVersion + " performed in " + duration + "ms");
+			return true;
+		} catch (Exception e) {
+			JcrUtils.discardQuietly(session);
+			throw new ArgeoException("Migration of data model "
+					+ dataModelNodePath + " to " + targetVersion + " failed.",
+					e);
+		} finally {
+			JcrUtils.logoutQuietly(session);
+			IOUtils.closeQuietly(reader);
+		}
+	}
+
+	protected static int compareVersions(String version1, String version2) {
+		// TODO do a proper version analysis and comparison
+		return version1.compareTo(version2);
+	}
+
+	/** To be called on a stopped repository. */
+	public static void clearRepositoryCaches(RepositoryConfig repositoryConfig) {
+		try {
+			String customeNodeTypesPath = "/nodetypes/custom_nodetypes.xml";
+			repositoryConfig.getFileSystem().deleteFile(customeNodeTypesPath);
+			if (log.isDebugEnabled())
+				log.debug("Cleared " + customeNodeTypesPath);
+		} catch (Exception e) {
+			throw new ArgeoException("Cannot clear caches", e);
+		}
+
+		// File customNodeTypes = new File(home.getPath()
+		// + "/repository/nodetypes/custom_nodetypes.xml");
+		// if (customNodeTypes.exists()) {
+		// customNodeTypes.delete();
+		// if (log.isDebugEnabled())
+		// log.debug("Cleared " + customNodeTypes);
+		// } else {
+		// log.warn("File " + customNodeTypes + " not found.");
+		// }
+	}
+
+	/*
+	 * FOR USE IN (SORTED) SETS
+	 */
+
+	public int compareTo(JackrabbitDataModelMigration dataModelMigration) {
+		// TODO make ordering smarter
+		if (dataModelNodePath.equals(dataModelMigration.dataModelNodePath))
+			return compareVersions(targetVersion,
+					dataModelMigration.targetVersion);
+		else
+			return dataModelNodePath
+					.compareTo(dataModelMigration.dataModelNodePath);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (!(obj instanceof JackrabbitDataModelMigration))
+			return false;
+		JackrabbitDataModelMigration dataModelMigration = (JackrabbitDataModelMigration) obj;
+		return dataModelNodePath.equals(dataModelMigration.dataModelNodePath)
+				&& targetVersion.equals(dataModelMigration.targetVersion);
+	}
+
+	@Override
+	public int hashCode() {
+		return targetVersion.hashCode();
+	}
+
+	public void setDataModelNodePath(String dataModelNodePath) {
+		this.dataModelNodePath = dataModelNodePath;
+	}
+
+	public void setTargetVersion(String targetVersion) {
+		this.targetVersion = targetVersion;
+	}
+
+	public void setMigrationCnd(Resource migrationCnd) {
+		this.migrationCnd = migrationCnd;
+	}
+
+	public void setDataModification(JcrCallback dataModification) {
+		this.dataModification = dataModification;
+	}
+
+	public String getDataModelNodePath() {
+		return dataModelNodePath;
+	}
+
+	public String getTargetVersion() {
+		return targetVersion;
+	}
+
+}