001/*
002 * (C) Copyright 2006-2015 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Nuxeo - initial API and implementation
018 *
019 */
020
021package org.nuxeo.usermapper.extension;
022
023import java.io.Serializable;
024import java.util.Map;
025
026import javax.script.Bindings;
027import javax.script.ScriptEngine;
028import javax.script.ScriptException;
029import javax.script.SimpleBindings;
030
031import org.apache.commons.lang.StringUtils;
032import org.nuxeo.automation.scripting.internals.ScriptingCache;
033import org.nuxeo.ecm.core.api.NuxeoPrincipal;
034
035/**
036 * {@link UserMapper} implementation using Nashorn to implement logic using JavaScript
037 *
038 * @author tiry
039 * @since 7.4
040 */
041
042public class NashornUserMapper extends AbstractUserMapper {
043
044    protected ScriptEngine engine;
045
046    protected final String mapperSource;
047
048    protected final String wrapperSource;
049
050    public NashornUserMapper(String mapperScript, String wrapperScript) {
051        super();
052        mapperSource = mapperScript;
053        wrapperSource = wrapperScript;
054    }
055
056    @Override
057    public Object wrapNuxeoPrincipal(NuxeoPrincipal principal, Object userObject, Map<String, Serializable> params) {
058        if (StringUtils.isEmpty(wrapperSource)) {
059            return null;
060        }
061        Bindings bindings = new SimpleBindings();
062        bindings.put("nuxeoPrincipal", principal);
063        bindings.put("userObject", userObject);
064        bindings.put("params", params);
065        try {
066            engine.eval(wrapperSource, bindings);
067        } catch (ScriptException e) {
068            log.error("Error while executing JavaScript mapper", e);
069        }
070        return bindings.get("userObject");
071    }
072
073    @Override
074    public void init(Map<String, String> params) throws Exception {
075        ScriptingCache scripting = new ScriptingCache(true);
076        engine = scripting.getScriptEngine();
077    }
078
079    @Override
080    public void release() {
081        // NOP
082    }
083
084    @Override
085    protected void resolveAttributes(Object userObject, Map<String, Serializable> searchAttributes,
086            Map<String, Serializable> userAttributes, Map<String, Serializable> profileAttributes) {
087        Bindings bindings = new SimpleBindings();
088        bindings.put("searchAttributes", searchAttributes);
089        bindings.put("profileAttributes", profileAttributes);
090        bindings.put("userAttributes", userAttributes);
091        bindings.put("userObject", userObject);
092
093        try {
094            engine.eval(mapperSource, bindings);
095        } catch (ScriptException e) {
096            log.error("Error while executing JavaScript mapper", e);
097        }
098    }
099
100}