| /* |
| * 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.vault.fs.config; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.UnsupportedEncodingException; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import javax.xml.parsers.DocumentBuilder; |
| import javax.xml.parsers.DocumentBuilderFactory; |
| import javax.xml.parsers.ParserConfigurationException; |
| |
| import org.apache.commons.io.IOUtils; |
| import org.apache.jackrabbit.vault.fs.api.Aggregator; |
| import org.apache.jackrabbit.vault.fs.api.ArtifactHandler; |
| import org.apache.jackrabbit.vault.fs.api.VaultFsConfig; |
| import org.apache.jackrabbit.vault.util.RejectingEntityResolver; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.w3c.dom.Document; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| import org.xml.sax.SAXException; |
| |
| /** |
| * {@code JcrFsConfig}... |
| */ |
| public abstract class AbstractVaultFsConfig implements VaultFsConfig { |
| |
| /** |
| * default logger |
| */ |
| private static final Logger log = LoggerFactory.getLogger(AbstractVaultFsConfig.class); |
| |
| public static final String ATTR_VERSION = "version"; |
| |
| private List<Aggregator> aggregators = new ArrayList<Aggregator>(); |
| |
| private List<ArtifactHandler> handlers = new ArrayList<ArtifactHandler>(); |
| |
| private Map<String, String> properties = new HashMap<String, String>(); |
| |
| private byte[] source; |
| |
| private String name = ""; |
| |
| public static VaultFsConfig load(File file) |
| throws ConfigurationException, IOException { |
| try (InputStream input = new FileInputStream(file)) { |
| return load(input, file.getName()); |
| } |
| } |
| |
| /** |
| * <p>The specified stream remains open after this method returns. |
| * @param in |
| * @param name |
| * @return |
| * @throws ConfigurationException |
| * @throws IOException |
| */ |
| public static VaultFsConfig load(InputStream in, String name) |
| throws ConfigurationException, IOException { |
| byte[] source = IOUtils.toByteArray(in); |
| Document document = parse(new ByteArrayInputStream(source)); |
| |
| Element doc = document.getDocumentElement(); |
| if (!doc.getNodeName().equals("vaultfs")) { |
| throw new ConfigurationException("<vaultfs> expected."); |
| } |
| String v = doc.getAttribute(ATTR_VERSION); |
| if (v == null || v.equals("")) { |
| v = "1.0"; |
| } |
| double version = Double.parseDouble(v); |
| AbstractVaultFsConfig config; |
| if (version != VaultFsConfig11.SUPPORTED_VERSION) { |
| throw new ConfigurationException("version " + version + " not supported."); |
| } else { |
| config = new VaultFsConfig11(); |
| } |
| config.setSource(source); |
| config.setName(name); |
| config.process(doc); |
| return config; |
| } |
| |
| protected Map<String, String> getProperties() { |
| return properties; |
| } |
| |
| @Override |
| public String getProperty(String name) { |
| return properties.get(name); |
| } |
| |
| protected abstract void process(Element doc) throws ConfigurationException; |
| |
| private void setSource(byte[] bytes) { |
| this.source = bytes; |
| } |
| |
| private void setName(String name) { |
| this.name = name; |
| } |
| |
| public InputStream getSource() { |
| return new ByteArrayInputStream(source); |
| } |
| |
| public String getSourceAsString() { |
| try { |
| return new String(source, "utf-8"); |
| } catch (UnsupportedEncodingException e) { |
| throw new IllegalStateException(e); |
| } |
| } |
| |
| public List<Aggregator> getAggregators() { |
| return aggregators; |
| } |
| |
| public List<ArtifactHandler> getHandlers() { |
| return handlers; |
| } |
| |
| private static Document parse(InputStream xml) |
| throws ConfigurationException, IOException { |
| try { |
| DocumentBuilderFactory factory = |
| DocumentBuilderFactory.newInstance(); |
| DocumentBuilder builder = factory.newDocumentBuilder(); |
| // disable DTD loading (bug #36897) |
| builder.setEntityResolver(new RejectingEntityResolver()); |
| return builder.parse(xml); |
| } catch (ParserConfigurationException e) { |
| throw new ConfigurationException( |
| "Unable to create configuration XML parser", e); |
| } catch (SAXException e) { |
| throw new ConfigurationException( |
| "Configuration file syntax error.", e); |
| } |
| } |
| |
| protected static Collection<Element> getChildElements(Node elem) { |
| NodeList nodeList = elem.getChildNodes(); |
| List<Element> nodes = new ArrayList<Element>(nodeList.getLength()); |
| for (int i=0; i<nodeList.getLength(); i++) { |
| Node child = nodeList.item(i); |
| if (child.getNodeType() == Node.ELEMENT_NODE) { |
| nodes.add((Element) child); |
| } |
| } |
| return nodes; |
| } |
| |
| protected void fail(String msg, Node elem) throws ConfigurationException { |
| String path = ""; |
| while (elem != null && elem.getNodeType() != Node.DOCUMENT_NODE) { |
| path = " > " + elem.getNodeName() + path; |
| elem = elem.getParentNode(); |
| } |
| throw new ConfigurationException(msg + ". Location: " + name + path); |
| } |
| |
| } |