--- /dev/null
+package org.argeo.jackrabbit;
+
+import java.io.ByteArrayInputStream;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.jcr.Node;
+import javax.jcr.NodeIterator;
+import javax.jcr.Repository;
+import javax.jcr.Session;
+import javax.jcr.nodetype.NodeType;
+
+import org.apache.commons.io.FilenameUtils;
+import org.apache.commons.io.IOUtils;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.jackrabbit.commons.NamespaceHelper;
+import org.apache.jackrabbit.commons.cnd.CndImporter;
+import org.argeo.ArgeoException;
+import org.argeo.jcr.ArgeoJcrConstants;
+import org.argeo.jcr.ArgeoNames;
+import org.argeo.jcr.ArgeoTypes;
+import org.argeo.jcr.JcrUtils;
+import org.argeo.util.security.DigestUtils;
+import org.osgi.framework.Bundle;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.ServiceReference;
+import org.osgi.service.packageadmin.ExportedPackage;
+import org.osgi.service.packageadmin.PackageAdmin;
+
+public class JackrabbitDataModel {
+ private final static Log log = LogFactory.getLog(JackrabbitDataModel.class);
+ private final static String DIGEST_ALGORITHM = "MD5";
+ final static String[] DEFAULT_CNDS = { "/org/argeo/jcr/argeo.cnd", "/org/argeo/cms/cms.cnd" };
+
+ // data model
+ /** Node type definitions in CND format */
+ private List<String> cndFiles = new ArrayList<String>();
+ /**
+ * Always import CNDs. Useful during development of new data models. In
+ * production, explicit migration processes should be used.
+ */
+ private Boolean forceCndImport = true;
+
+ /** Namespaces to register: key is prefix, value namespace */
+ private Map<String, String> namespaces = new HashMap<String, String>();
+
+ private final BundleContext bc;
+
+ public JackrabbitDataModel(BundleContext bc) {
+ this.bc = bc;
+ }
+
+ /**
+ * Import declared node type definitions and register namespaces. Tries to
+ * update the node definitions if they have changed. In case of failures an
+ * error will be logged but no exception will be thrown.
+ */
+ public void prepareDataModel(Repository repository) {
+ cndFiles = Arrays.asList(DEFAULT_CNDS);
+ if ((cndFiles == null || cndFiles.size() == 0) && (namespaces == null || namespaces.size() == 0))
+ return;
+
+ Session session = null;
+ try {
+ session = repository.login();
+ // register namespaces
+ if (namespaces.size() > 0) {
+ NamespaceHelper namespaceHelper = new NamespaceHelper(session);
+ namespaceHelper.registerNamespaces(namespaces);
+ }
+
+ // load CND files from classpath or as URL
+ for (String resUrl : cndFiles) {
+ processCndFile(session, resUrl);
+ }
+ } catch (Exception e) {
+ JcrUtils.discardQuietly(session);
+ throw new ArgeoException("Cannot import node type definitions " + cndFiles, e);
+ } finally {
+ JcrUtils.logoutQuietly(session);
+ }
+
+ }
+
+ protected void processCndFile(Session session, String resUrl) {
+ Reader reader = null;
+ try {
+ // check existing data model nodes
+ new NamespaceHelper(session).registerNamespace(ArgeoNames.ARGEO, ArgeoNames.ARGEO_NAMESPACE);
+ if (!session.itemExists(ArgeoJcrConstants.DATA_MODELS_BASE_PATH))
+ JcrUtils.mkdirs(session, ArgeoJcrConstants.DATA_MODELS_BASE_PATH);
+ Node dataModels = session.getNode(ArgeoJcrConstants.DATA_MODELS_BASE_PATH);
+ NodeIterator it = dataModels.getNodes();
+ Node dataModel = null;
+ while (it.hasNext()) {
+ Node node = it.nextNode();
+ if (node.getProperty(ArgeoNames.ARGEO_URI).getString().equals(resUrl)) {
+ dataModel = node;
+ break;
+ }
+ }
+
+ Bundle bundle = findDataModelBundle(resUrl);
+
+ byte[] cndContent = readCndContent(resUrl);
+ String newDigest = DigestUtils.digest(DIGEST_ALGORITHM, cndContent);
+
+ String currentVersion = null;
+ if (dataModel != null) {
+ currentVersion = dataModel.getProperty(ArgeoNames.ARGEO_DATA_MODEL_VERSION).getString();
+ if (dataModel.hasNode(Node.JCR_CONTENT)) {
+ String oldDigest = JcrUtils.checksumFile(dataModel, DIGEST_ALGORITHM);
+ if (oldDigest.equals(newDigest)) {
+ if (log.isTraceEnabled())
+ log.trace("Data model " + resUrl + " hasn't changed, keeping version " + currentVersion);
+ return;
+ }
+ }
+ }
+
+ if (dataModel != null && !forceCndImport) {
+ log.info(
+ "Data model " + resUrl + " has changed since version " + currentVersion
+ + (bundle != null
+ ? ": version " + bundle.getVersion() + ", bundle " + bundle.getSymbolicName()
+ : ""));
+ return;
+ }
+
+ reader = new InputStreamReader(new ByteArrayInputStream(cndContent));
+ // actually imports the CND
+ try {
+ CndImporter.registerNodeTypes(reader, session, true);
+ } catch (Exception e) {
+ log.error("Cannot import data model " + resUrl, e);
+ return;
+ }
+
+ if (dataModel != null && !dataModel.isNodeType(NodeType.NT_FILE)) {
+ dataModel.remove();
+ dataModel = null;
+ }
+
+ // FIXME: what if argeo.cnd would not be the first called on
+ // a new repo? argeo:dataModel would not be found
+ String fileName = FilenameUtils.getName(resUrl);
+ if (dataModel == null) {
+ dataModel = dataModels.addNode(fileName, NodeType.NT_FILE);
+ dataModel.addNode(Node.JCR_CONTENT, NodeType.NT_RESOURCE);
+ dataModel.addMixin(ArgeoTypes.ARGEO_DATA_MODEL);
+ dataModel.setProperty(ArgeoNames.ARGEO_URI, resUrl);
+ } else {
+ session.getWorkspace().getVersionManager().checkout(dataModel.getPath());
+ }
+ if (bundle != null)
+ dataModel.setProperty(ArgeoNames.ARGEO_DATA_MODEL_VERSION, bundle.getVersion().toString());
+ else
+ dataModel.setProperty(ArgeoNames.ARGEO_DATA_MODEL_VERSION, "0.0.0");
+ JcrUtils.copyBytesAsFile(dataModel.getParent(), fileName, cndContent);
+ JcrUtils.updateLastModified(dataModel);
+ session.save();
+ session.getWorkspace().getVersionManager().checkin(dataModel.getPath());
+
+ if (currentVersion == null)
+ log.info(
+ "Data model " + resUrl
+ + (bundle != null
+ ? ", version " + bundle.getVersion() + ", bundle " + bundle.getSymbolicName()
+ : ""));
+ else
+ log.info(
+ "Data model " + resUrl + " updated from version " + currentVersion
+ + (bundle != null
+ ? ", version " + bundle.getVersion() + ", bundle " + bundle.getSymbolicName()
+ : ""));
+ } catch (Exception e) {
+ throw new ArgeoException("Cannot process data model " + resUrl, e);
+ } finally {
+ IOUtils.closeQuietly(reader);
+ }
+ }
+
+ protected byte[] readCndContent(String resUrl) {
+ BundleContext bundleContext = bc;
+ InputStream in = null;
+ try {
+ boolean classpath;
+ // normalize URL
+ if (bundleContext != null && resUrl.startsWith("classpath:")) {
+ resUrl = resUrl.substring("classpath:".length());
+ classpath = true;
+ } else if (resUrl.indexOf(':') < 0) {
+ if (!resUrl.startsWith("/")) {
+ resUrl = "/" + resUrl;
+ log.warn("Classpath should start with '/'");
+ }
+ classpath = true;
+ } else {
+ classpath = false;
+ }
+
+ URL url = null;
+ if (classpath) {
+ // if (bundleContext != null) {
+ Bundle currentBundle = bundleContext.getBundle();
+ url = currentBundle.getResource(resUrl);
+ // } else {
+ // resUrl = "classpath:" + resUrl;
+ // url = null;
+ // }
+ } else if (!resUrl.startsWith("classpath:")) {
+ url = new URL(resUrl);
+ }
+
+ if (url != null) {
+ in = url.openStream();
+ // } else if (resourceLoader != null) {
+ // Resource res = resourceLoader.getResource(resUrl);
+ // in = res.getInputStream();
+ // url = res.getURL();
+ } else {
+ throw new ArgeoException(
+ "No " + resUrl + " in the classpath," + " make sure the containing" + " package is visible.");
+ }
+
+ return IOUtils.toByteArray(in);
+ } catch (Exception e) {
+ throw new ArgeoException("Cannot read CND from " + resUrl, e);
+ } finally {
+ IOUtils.closeQuietly(in);
+ }
+ }
+
+ /*
+ * UTILITIES
+ */
+ /** Find which OSGi bundle provided the data model resource */
+ protected Bundle findDataModelBundle(String resUrl) {
+ BundleContext bundleContext = bc;
+ if (bundleContext == null)
+ return null;
+
+ if (resUrl.startsWith("/"))
+ resUrl = resUrl.substring(1);
+ String pkg = resUrl.substring(0, resUrl.lastIndexOf('/')).replace('/', '.');
+ ServiceReference<PackageAdmin> paSr = bundleContext.getServiceReference(PackageAdmin.class);
+ PackageAdmin packageAdmin = (PackageAdmin) bundleContext.getService(paSr);
+
+ // find exported package
+ ExportedPackage exportedPackage = null;
+ ExportedPackage[] exportedPackages = packageAdmin.getExportedPackages(pkg);
+ if (exportedPackages == null)
+ throw new ArgeoException("No exported package found for " + pkg);
+ for (ExportedPackage ep : exportedPackages) {
+ for (Bundle b : ep.getImportingBundles()) {
+ if (b.getBundleId() == bundleContext.getBundle().getBundleId()) {
+ exportedPackage = ep;
+ break;
+ }
+ }
+ }
+
+ Bundle exportingBundle = null;
+ if (exportedPackage != null) {
+ exportingBundle = exportedPackage.getExportingBundle();
+ } else {
+ // assume this is in the same bundle
+ exportingBundle = bundleContext.getBundle();
+ // throw new ArgeoException("No OSGi exporting package found for "
+ // + resUrl);
+ }
+ return exportingBundle;
+ }
+
+}
projects / lgpl / argeo-commons.git / blobdiff