--- /dev/null
+package org.argeo.cms.integration;
+
+import java.io.IOException;
+
+import javax.jcr.Node;
+import javax.jcr.NodeIterator;
+import javax.jcr.Property;
+import javax.jcr.PropertyIterator;
+import javax.jcr.PropertyType;
+import javax.jcr.Repository;
+import javax.jcr.RepositoryException;
+import javax.jcr.Session;
+import javax.jcr.Value;
+import javax.jcr.nodetype.NodeType;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+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.api.JackrabbitNode;
+import org.apache.jackrabbit.api.JackrabbitValue;
+import org.argeo.jcr.JcrUtils;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+/** Access a JCR repository via web services. */
+public class JcrServlet extends HttpServlet {
+ private static final long serialVersionUID = 6536175260540484539L;
+ private final static Log log = LogFactory.getLog(JcrServlet.class);
+
+ private final static String PARAM_VERBOSE = "verbose";
+ private final static String PARAM_DEPTH = "depth";
+
+ public final static String JCR_NODES = "jcr:nodes";
+ public final static String JCR_PATH = "jcr:path";
+ public final static String JCR_NAME = "jcr:name";
+
+
+ private Repository repository;
+ private Integer maxDepth = 8;
+
+ private ObjectMapper objectMapper = new ObjectMapper();
+
+ @Override
+ protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+ if (log.isTraceEnabled())
+ log.trace("Data service: " + req.getPathInfo());
+
+ String dataWorkspace = getWorkspace(req);
+ String jcrPath = getJcrPath(req);
+
+ boolean verbose = req.getParameter(PARAM_VERBOSE) != null && !req.getParameter(PARAM_VERBOSE).equals("false");
+ int depth = 1;
+ if (req.getParameter(PARAM_DEPTH) != null) {
+ depth = Integer.parseInt(req.getParameter(PARAM_DEPTH));
+ if (depth > maxDepth)
+ throw new RuntimeException("Depth " + depth + " is higher than maximum " + maxDepth);
+ }
+
+ Session session = null;
+ try {
+ // authentication
+ session = openJcrSession(req, resp, repository, dataWorkspace);
+ if (!session.itemExists(jcrPath))
+ throw new RuntimeException("JCR node " + jcrPath + " does not exist");
+ Node node = session.getNode(jcrPath);
+ if (node.isNodeType(NodeType.NT_FILE)) {
+ resp.setContentType("application/octet-stream");
+ resp.addHeader("Content-Disposition", "attachment; filename='" + node.getName() + "'");
+ IOUtils.copy(JcrUtils.getFileAsStream(node), resp.getOutputStream());
+ resp.flushBuffer();
+ } else {
+ resp.setContentType("application/json");
+ JsonGenerator jsonGenerator = objectMapper.getFactory().createGenerator(resp.getWriter());
+ jsonGenerator.writeStartObject();
+ writeNodeProperties(node, jsonGenerator, verbose);
+ writeNodeChildren(node, jsonGenerator, depth, verbose);
+ jsonGenerator.writeEndObject();
+ jsonGenerator.flush();
+ }
+ } catch (Exception e) {
+ new CmsExceptionsChain(e).writeAsJson(objectMapper, resp);
+ } finally {
+ JcrUtils.logoutQuietly(session);
+ }
+ }
+
+ @Override
+ protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+ if (log.isTraceEnabled())
+ log.trace("Data service: " + req.getPathInfo());
+
+ String dataWorkspace = getWorkspace(req);
+ String jcrPath = getJcrPath(req);
+
+ Session session = null;
+ try {
+ // authentication
+ session = openJcrSession(req, resp, repository, dataWorkspace);
+ if (!session.itemExists(jcrPath)) {
+ String parentPath = FilenameUtils.getFullPathNoEndSeparator(jcrPath);
+ String fileName = FilenameUtils.getName(jcrPath);
+ Node folderNode = JcrUtils.mkfolders(session, parentPath);
+ byte[] bytes = IOUtils.toByteArray(req.getInputStream());
+ JcrUtils.copyBytesAsFile(folderNode, fileName, bytes);
+ } else {
+ Node node = session.getNode(jcrPath);
+ if (!node.isNodeType(NodeType.NT_FILE))
+ throw new IllegalArgumentException("Node " + jcrPath + " exists but is not a file");
+ byte[] bytes = IOUtils.toByteArray(req.getInputStream());
+ JcrUtils.copyBytesAsFile(node.getParent(), node.getName(), bytes);
+ }
+ } catch (Exception e) {
+ new CmsExceptionsChain(e).writeAsJson(objectMapper, resp);
+ } finally {
+ JcrUtils.logoutQuietly(session);
+ }
+ }
+
+ protected Session openJcrSession(HttpServletRequest req, HttpServletResponse resp, Repository repository,
+ String workspace) throws RepositoryException {
+ return workspace != null ? repository.login(workspace) : repository.login();
+ }
+
+ /**
+ * To be overridden.
+ *
+ * @return the workspace to use, or <code>null</code> if default should be used.
+ */
+ protected String getWorkspace(HttpServletRequest req) {
+ return null;
+ }
+
+ protected String getJcrPath(HttpServletRequest req) {
+ return req.getPathInfo();
+ }
+
+ protected void writeNodeProperties(Node node, JsonGenerator jsonGenerator, boolean verbose)
+ throws RepositoryException, IOException {
+ String jcrPath = node.getPath();
+ jsonGenerator.writeStringField(JcrServlet.JCR_NAME, node.getName());
+ jsonGenerator.writeStringField(JcrServlet.JCR_PATH, jcrPath);
+
+ PropertyIterator pit = node.getProperties();
+ properties: while (pit.hasNext()) {
+ Property property = pit.nextProperty();
+
+ if (!verbose) {
+ if (property.getName().equals("jcr:primaryType") || property.getName().equals("jcr:mixinTypes")
+ || property.getName().equals("jcr:created") || property.getName().equals("jcr:createdBy")
+ || property.getName().equals("jcr:lastModified")
+ || property.getName().equals("jcr:lastModifiedBy")) {
+ continue properties;// skip
+ }
+ }
+
+ if (property.getType() == PropertyType.BINARY) {
+ if (!(node instanceof JackrabbitNode)) {
+ continue properties;// skip
+ }
+ }
+
+ if (!property.isMultiple()) {
+ jsonGenerator.writeFieldName(property.getName());
+ writePropertyValue(property.getType(), property.getValue(), jsonGenerator);
+ } else {
+ jsonGenerator.writeFieldName(property.getName());
+ jsonGenerator.writeStartArray();
+ Value[] values = property.getValues();
+ for (Value value : values) {
+ writePropertyValue(property.getType(), value, jsonGenerator);
+ }
+ jsonGenerator.writeEndArray();
+ }
+ }
+
+ // meta data
+ if (verbose) {
+ jsonGenerator.writeStringField("jcr:identifier", node.getIdentifier());
+ }
+ }
+
+ protected void writePropertyValue(int type, Value value, JsonGenerator jsonGenerator)
+ throws RepositoryException, IOException {
+ if (type == PropertyType.DOUBLE)
+ jsonGenerator.writeNumber(value.getDouble());
+ else if (type == PropertyType.LONG)
+ jsonGenerator.writeNumber(value.getLong());
+ else if (type == PropertyType.BINARY) {
+ if (value instanceof JackrabbitValue) {
+ String contentIdentity = ((JackrabbitValue) value).getContentIdentity();
+ jsonGenerator.writeString("SHA256:" + contentIdentity);
+ } else {
+ jsonGenerator.writeNull();
+ }
+ } else
+ jsonGenerator.writeString(value.getString());
+ }
+
+ protected void writeNodeChildren(Node node, JsonGenerator jsonGenerator, int depth, boolean verbose)
+ throws RepositoryException, IOException {
+ if (!node.hasNodes())
+ return;
+ if (depth <= 0)
+ return;
+ NodeIterator nit = node.getNodes();
+ jsonGenerator.writeFieldName(JcrServlet.JCR_NODES);
+ jsonGenerator.writeStartArray();
+ children: while (nit.hasNext()) {
+ Node child = nit.nextNode();
+
+ if (child.getName().startsWith("rep:")) {
+ continue children;// skip Jackrabbit auth metadata
+ }
+
+ jsonGenerator.writeStartObject();
+ writeNodeProperties(child, jsonGenerator, verbose);
+ writeNodeChildren(child, jsonGenerator, depth - 1, verbose);
+ jsonGenerator.writeEndObject();
+ }
+ jsonGenerator.writeEndArray();
+ }
+
+ public void setRepository(Repository repository) {
+ this.repository = repository;
+ }
+
+ public void setMaxDepth(Integer maxDepth) {
+ this.maxDepth = maxDepth;
+ }
+
+}
projects / lgpl / argeo-commons.git / blobdiff