/** * This method renders the given request URI using the Sling request processing and stores the * result at the request's location relative to the cache root folder. The request is processed in * the context of the given user's session. * * @param uri The request URI including selectors and extensions * @param configCacheRoot The cache root folder * @param admin The admin session used to store the result in the cache * @param session The user's session * @return <code>true</code> if the cache was updated */ protected boolean renderResource( String uri, String configCacheRoot, Session admin, Session session) throws RepositoryException, ServletException, IOException { String cachePath = configCacheRoot + getTargetPath(uri); ResourceResolver resolver = null; try { resolver = createResolver(session.getUserID()); // render resource ByteArrayOutputStream out = new ByteArrayOutputStream(); HttpServletRequest request = createRequest(uri); HttpServletResponse response = requestResponseFactory.createResponse(out); slingServlet.processRequest(request, response, resolver); response.getWriter().flush(); // compare md5 checksum with cache String md5 = requestResponseFactory.getMD5(response); String md5Path = cachePath + "/" + JcrConstants.JCR_CONTENT + "/" + MD5_HASH_PROPERTY; if (!admin.propertyExists(md5Path) || !admin.getProperty(md5Path).getString().equals(md5)) { log.info("MD5 hash missing or not equal, updating content sync cache: {}", cachePath); JcrUtil.createPath(cachePath, "sling:Folder", "nt:file", admin, false); Node cacheContentNode = JcrUtil.createPath(cachePath + "/jcr:content", "nt:resource", admin); if (needsUtf8Encoding(response)) { cacheContentNode.setProperty( JcrConstants.JCR_DATA, admin .getValueFactory() .createBinary( IOUtils.toInputStream(out.toString(response.getCharacterEncoding())))); } else { cacheContentNode.setProperty( JcrConstants.JCR_DATA, admin.getValueFactory().createBinary(new ByteArrayInputStream(out.toByteArray()))); } cacheContentNode.setProperty(JcrConstants.JCR_LASTMODIFIED, Calendar.getInstance()); if (response.getContentType() != null) { cacheContentNode.setProperty(JcrConstants.JCR_MIMETYPE, response.getContentType()); } if (response.getCharacterEncoding() != null) { cacheContentNode.setProperty(JcrConstants.JCR_ENCODING, response.getCharacterEncoding()); } cacheContentNode.addMixin(NT_MD5_HASH); cacheContentNode.setProperty(MD5_HASH_PROPERTY, md5); admin.save(); return true; } else { log.info("Skipping update of content sync cache: {}", uri); return false; } } catch (LoginException e) { log.error("Creating resource resolver for resource rendering failed: ", e); return false; } finally { if (resolver != null) { resolver.close(); } if (admin.hasPendingChanges()) { admin.refresh(false); } } }
/** * Creates a GET request for the given uri. This method can be overridden to provide a customized * request object, e.g. with added parameters. * * @see com.day.cq.contentsync.handler.util.RequestResponseFactory * @param uri The uri * @return The request object */ protected HttpServletRequest createRequest(String uri) { return requestResponseFactory.createRequest("GET", uri); }