001/*
002 * (C) Copyright 2013-2017 Nuxeo (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 *     dmetzler
018 */
019package org.nuxeo.ecm.automation.io.services;
020
021import java.lang.reflect.Constructor;
022import java.util.List;
023
024import org.apache.logging.log4j.LogManager;
025import org.apache.logging.log4j.Logger;
026import org.nuxeo.ecm.automation.io.services.codec.CodecDescriptor;
027import org.nuxeo.ecm.automation.io.services.codec.ObjectCodec;
028import org.nuxeo.ecm.automation.io.services.codec.ObjectCodecService;
029import org.nuxeo.ecm.webengine.JsonFactoryManager;
030import org.nuxeo.runtime.RuntimeMessage.Level;
031import org.nuxeo.runtime.api.Framework;
032import org.nuxeo.runtime.model.ComponentContext;
033import org.nuxeo.runtime.model.DefaultComponent;
034
035/**
036 * @since 5.7.3
037 */
038public class IOComponent extends DefaultComponent {
039
040    private static final Logger log = LogManager.getLogger(IOComponent.class);
041
042    /**
043     * @since 10.3
044     */
045    public static final String XP_CODECS = "codecs";
046
047    private JsonFactoryManager jsonFactoryManager;
048
049    private ObjectCodecService codecs;
050
051    @Override
052    public <T> T getAdapter(Class<T> adapter) {
053        if (ObjectCodecService.class.isAssignableFrom(adapter)) {
054            return adapter.cast(codecs);
055        } else if (JsonFactoryManager.class.isAssignableFrom(adapter)) {
056            return adapter.cast(jsonFactoryManager);
057        }
058        return super.getAdapter(adapter);
059    }
060
061    @Override
062    public void start(ComponentContext context) {
063        super.start(context);
064        jsonFactoryManager = Framework.getService(JsonFactoryManager.class);
065        codecs = new ObjectCodecService(jsonFactoryManager.getJsonFactory());
066        List<CodecDescriptor> descriptors = getDescriptors(XP_CODECS);
067        for (CodecDescriptor d : descriptors) {
068            try {
069                Class<?> clazz = Class.forName(d.klass);
070                Constructor<?> constructor = clazz.getDeclaredConstructor();
071                ObjectCodec<?> codec = (ObjectCodec<?>) constructor.newInstance();
072                codecs.addCodec(codec);
073            } catch (ClassCastException | ReflectiveOperationException e) {
074                String msg = String.format("Failed to register codec on '%s': error initializing class '%s' (%s).",
075                        name, d.getId(), e.toString());
076                log.error(msg, e);
077                addRuntimeMessage(Level.ERROR, msg);
078            }
079        }
080        codecs.postInit();
081    }
082
083    @Override
084    public void stop(ComponentContext context) throws InterruptedException {
085        super.stop(context);
086        codecs = null;
087    }
088
089}