/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.jackrabbit.spi2dav;
import org.apache.http.HttpResponse;
import org.apache.jackrabbit.commons.webdav.JcrRemotingConstants;
import org.apache.jackrabbit.spi.commons.conversion.NameException;
import org.apache.jackrabbit.spi.commons.conversion.NamePathResolver;
import org.apache.jackrabbit.spi.commons.name.NameConstants;
import org.apache.jackrabbit.spi.ItemId;
import org.apache.jackrabbit.spi.Name;
import org.apache.jackrabbit.spi.NodeId;
import org.apache.jackrabbit.spi.Path;
import org.apache.jackrabbit.spi.PropertyId;
import org.apache.jackrabbit.spi.SessionInfo;
import org.apache.jackrabbit.util.Text;
import org.apache.jackrabbit.webdav.DavConstants;
import org.apache.jackrabbit.webdav.DavException;
import org.apache.jackrabbit.webdav.DavServletResponse;
import org.apache.jackrabbit.webdav.MultiStatus;
import org.apache.jackrabbit.webdav.MultiStatusResponse;
import org.apache.jackrabbit.webdav.client.methods.HttpPropfind;
import org.apache.jackrabbit.webdav.client.methods.HttpReport;
import org.apache.jackrabbit.webdav.property.DavPropertyNameSet;
import org.apache.jackrabbit.webdav.property.DavPropertySet;
import org.apache.jackrabbit.webdav.version.report.ReportInfo;
import org.apache.jackrabbit.webdav.xml.DomUtil;
import org.w3c.dom.Document;
import javax.jcr.ItemNotFoundException;
import javax.jcr.RepositoryException;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.HashMap;
import java.util.Map;
/**
* <code>URIResolverImpl</code>...
*/
class URIResolverImpl implements URIResolver {
private final URI repositoryUri;
private final RepositoryServiceImpl service;
private final Document domFactory;
// TODO: to-be-fixed. uri/id-caches don't get updated
// for each workspace a separate idUri-cache is created
private final Map<String, IdURICache> idURICaches = new HashMap<String, IdURICache>();
URIResolverImpl(URI repositoryUri, RepositoryServiceImpl service, Document domFactory) {
this.repositoryUri = repositoryUri;
this.service = service;
this.domFactory = domFactory;
}
private IdURICache getCache(String workspaceName) {
if (idURICaches.containsKey(workspaceName)) {
return idURICaches.get(workspaceName);
} else {
IdURICache c = new IdURICache(getWorkspaceUri(workspaceName));
idURICaches.put(workspaceName, c);
return c;
}
}
String getRepositoryUri() {
return repositoryUri.toASCIIString();
}
String getWorkspaceUri(String workspaceName) {
String workspaceUri = getRepositoryUri();
if (workspaceName != null) {
workspaceUri += Text.escape(workspaceName);
}
return workspaceUri;
}
String getRootItemUri(String workspaceName) {
return getWorkspaceUri(workspaceName) + Text.escapePath(JcrRemotingConstants.ROOT_ITEM_RESOURCEPATH);
}
String getItemUri(ItemId itemId, String workspaceName, SessionInfo sessionInfo)
throws RepositoryException {
IdURICache cache = getCache(workspaceName);
// check if uri is available from cache
if (cache.containsItemId(itemId)) {
return cache.getUri(itemId);
} else {
StringBuffer uriBuffer = new StringBuffer();
Path path = itemId.getPath();
String uniqueID = itemId.getUniqueID();
// resolver uuid part
if (uniqueID != null) {
ItemId uuidId = (path == null) ? itemId : service.getIdFactory().createNodeId(uniqueID);
if (path != null && cache.containsItemId(uuidId)) {
// append uri of parent node, that is already cached
uriBuffer.append(cache.getUri(uuidId));
} else {
// try to request locate-by-uuid report to build the uri
ReportInfo rInfo = new ReportInfo(JcrRemotingConstants.REPORT_LOCATE_BY_UUID, ItemResourceConstants.NAMESPACE);
rInfo.setContentElement(DomUtil.hrefToXml(uniqueID, domFactory));
HttpReport request = null;
try {
String wspUri = getWorkspaceUri(workspaceName);
request = new HttpReport(wspUri, rInfo);
HttpResponse response = service.executeRequest(sessionInfo, request);
request.checkSuccess(response);
MultiStatus ms = request.getResponseBodyAsMultiStatus(response);
if (ms.getResponses().length == 1) {
String absoluteUri = resolve(wspUri, ms.getResponses()[0].getHref());
uriBuffer.append(absoluteUri);
cache.add(absoluteUri, uuidId);
} else {
throw new ItemNotFoundException("Cannot identify item with uniqueID " + uniqueID);
}
} catch (IOException e) {
throw new RepositoryException(e.getMessage());
} catch (DavException e) {
throw ExceptionConverter.generate(e);
} finally {
if (request != null) {
request.releaseConnection();
}
}
}
} else {
// start build uri from root-item
uriBuffer.append(getRootItemUri(workspaceName));
}
// resolve relative-path part unless it denotes the root-item
if (path != null && !path.denotesRoot()) {
String jcrPath = service.getNamePathResolver(sessionInfo).getJCRPath(path);
if (!path.isAbsolute() && !uriBuffer.toString().endsWith("/")) {
uriBuffer.append("/");
}
uriBuffer.append(Text.escapePath(jcrPath));
}
String itemUri = uriBuffer.toString();
if (!cache.containsItemId(itemId)) {
cache.add(itemUri, itemId);
}
return itemUri;
}
}
/**
* Resolve the given href obtained from multistatus against base URI
*/
private static String resolve(String wspUri, String href) throws RepositoryException {
try {
java.net.URI base = new java.net.URI(wspUri);
java.net.URI rel = new java.net.URI(href);
return base.resolve(rel).toString();
}
catch (URISyntaxException ex) {
throw new RepositoryException(ex);
}
}
protected NodeId buildNodeId(NodeId parentId, String baseUri, MultiStatusResponse response,
String workspaceName, NamePathResolver resolver) throws RepositoryException {
IdURICache cache = getCache(workspaceName);
NodeId nodeId;
DavPropertySet propSet = response.getProperties(DavServletResponse.SC_OK);
String uniqueID = service.getUniqueID(propSet);
if (uniqueID != null) {
nodeId = service.getIdFactory().createNodeId(uniqueID);
} else {
Name qName = service.getQName(propSet, resolver);
if (NameConstants.ROOT.equals(qName)) {
nodeId = service.getIdFactory().createNodeId((String) null, service.getPathFactory().getRootPath());
} else {
int index = service.getIndex(propSet);
nodeId = service.getIdFactory().createNodeId(parentId, service.getPathFactory().create(qName, index));
}
}
// cache
cache.add(resolve(baseUri, response.getHref()), nodeId);
return nodeId;
}
PropertyId buildPropertyId(NodeId parentId, MultiStatusResponse response,
String workspaceName, NamePathResolver resolver) throws RepositoryException {
IdURICache cache = getCache(workspaceName);
if (cache.containsUri(response.getHref())) {
ItemId id = cache.getItemId(response.getHref());
if (!id.denotesNode()) {
return (PropertyId) id;
}
}
try {
DavPropertySet propSet = response.getProperties(DavServletResponse.SC_OK);
Name name = resolver.getQName(propSet.get(JcrRemotingConstants.JCR_NAME_LN, ItemResourceConstants.NAMESPACE).getValue().toString());
PropertyId propertyId = service.getIdFactory().createPropertyId(parentId, name);
cache.add(response.getHref(), propertyId);
return propertyId;
} catch (NameException e) {
throw new RepositoryException(e);
}
}
void clearCacheEntries(ItemId itemId, SessionInfo sessionInfo) {
IdURICache cache = getCache(sessionInfo.getWorkspaceName());
if (cache.containsItemId(itemId)) {
cache.remove(itemId);
}
}
void clearCacheEntries(SessionInfo sessionInfo) {
IdURICache cache = getCache(sessionInfo.getWorkspaceName());
cache.clear();
}
private static boolean isSameURI(String uri1, String uri2) {
return getCleanURI(uri1).equals(getCleanURI(uri2));
}
private static String getCleanURI(String uri) {
if (uri.endsWith("/")) {
return uri.substring(0, uri.length() - 1);
} else {
return uri;
}
}
private NodeId getNodeId(String uri, SessionInfo sessionInfo, boolean nodeIsGone) throws RepositoryException {
IdURICache cache = getCache(sessionInfo.getWorkspaceName());
if (cache.containsUri(uri)) {
// id has been accessed before and is cached
ItemId id = cache.getItemId(uri);
if (id.denotesNode()) {
return (NodeId) id;
}
}
if (nodeIsGone) {
throw new RepositoryException("Can't reconstruct nodeId from URI when the remote node is gone.");
}
// retrieve parentId from cache or by recursive calls
NodeId parentId;
if (isSameURI(uri, getRootItemUri(sessionInfo.getWorkspaceName()))) {
parentId = null;
} else {
String parentUri = Text.getRelativeParent(uri, 1, true);
parentId = getNodeId(parentUri, sessionInfo, false);
}
DavPropertyNameSet nameSet = new DavPropertyNameSet();
nameSet.add(JcrRemotingConstants.JCR_UUID_LN, ItemResourceConstants.NAMESPACE);
nameSet.add(JcrRemotingConstants.JCR_NAME_LN, ItemResourceConstants.NAMESPACE);
nameSet.add(JcrRemotingConstants.JCR_INDEX_LN, ItemResourceConstants.NAMESPACE);
HttpPropfind request = null;
try {
request = new HttpPropfind(uri, nameSet, DavConstants.DEPTH_0);
HttpResponse response = service.executeRequest(sessionInfo, request);
MultiStatusResponse[] responses = request.getResponseBodyAsMultiStatus(response).getResponses();
if (responses.length != 1) {
throw new ItemNotFoundException("Unable to retrieve the node with id " + uri);
}
return buildNodeId(parentId, uri, responses[0], sessionInfo.getWorkspaceName(), service.getNamePathResolver(sessionInfo));
} catch (IOException e) {
throw new RepositoryException(e);
} catch (DavException e) {
throw ExceptionConverter.generate(e);
} finally {
if (request != null) {
request.releaseConnection();
}
}
}
//-------------------------------------------------------< URI resolver >---
/**
* @inheritDoc
*/
public Path getQPath(String uri, SessionInfo sessionInfo) throws RepositoryException {
String rootUri = getRootItemUri(sessionInfo.getWorkspaceName());
String jcrPath;
if (uri.startsWith(rootUri)) {
jcrPath = uri.substring(rootUri.length());
} else {
// todo: probably rather an error?
jcrPath = uri;
}
try {
return service.getNamePathResolver(sessionInfo).getQPath(Text.unescape(jcrPath));
} catch (NameException e) {
throw new RepositoryException(e);
}
}
/**
* @inheritDoc
*/
public NodeId getNodeId(String uri, SessionInfo sessionInfo) throws RepositoryException {
return getNodeId(uri, sessionInfo, false);
}
/**
* @inheritDoc
*/
public NodeId getNodeIdAfterEvent(String uri, SessionInfo sessionInfo, boolean nodeIsGone) throws RepositoryException {
return getNodeId(uri, sessionInfo, nodeIsGone);
}
/**
* @inheritDoc
*/
public PropertyId getPropertyId(String uri, SessionInfo sessionInfo) throws RepositoryException {
IdURICache cache = getCache(sessionInfo.getWorkspaceName());
ItemId id = cache.getItemId(uri);
if (id != null) {
if (!id.denotesNode()) {
return (PropertyId) id;
}
}
// separate parent uri and property JCRName
String parentUri = Text.getRelativeParent(uri, 1, true);
// make sure propName is unescaped
String propName = Text.unescape(Text.getName(uri, true));
// retrieve parent node id
NodeId parentId = getNodeId(parentUri, sessionInfo, false);
// build property id
try {
Name name = service.getNamePathResolver(sessionInfo).getQName(propName);
PropertyId propertyId = service.getIdFactory().createPropertyId(parentId, name);
cache.add(uri, propertyId);
return propertyId;
} catch (NameException e) {
throw new RepositoryException(e);
}
}
}