001/*
002 * (C) Copyright 2014 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 *     Anahide Tchertchian
018 */
019package org.nuxeo.targetplatforms.jaxrs;
020
021import java.io.IOException;
022import java.io.OutputStream;
023import java.lang.annotation.Annotation;
024import java.lang.reflect.Type;
025
026import javax.servlet.http.HttpServletRequest;
027import javax.ws.rs.Produces;
028import javax.ws.rs.WebApplicationException;
029import javax.ws.rs.core.Context;
030import javax.ws.rs.core.MediaType;
031import javax.ws.rs.core.MultivaluedMap;
032import javax.ws.rs.ext.MessageBodyWriter;
033import javax.ws.rs.ext.Provider;
034
035import org.nuxeo.targetplatforms.api.TargetPackage;
036import org.nuxeo.targetplatforms.api.TargetPackageInfo;
037import org.nuxeo.targetplatforms.api.TargetPlatform;
038import org.nuxeo.targetplatforms.api.TargetPlatformInfo;
039import org.nuxeo.targetplatforms.api.TargetPlatformInstance;
040import org.nuxeo.targetplatforms.io.JSONExporter;
041
042/**
043 * @since 5.9.3
044 */
045@Provider
046@Produces({ MediaType.APPLICATION_JSON, "text/plain" })
047public class JsonWriter implements MessageBodyWriter<Object> {
048
049    @Context
050    protected HttpServletRequest request;
051
052    @Override
053    public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
054        return TargetPackageInfo.class.isAssignableFrom(type) || TargetPackage.class.isAssignableFrom(type)
055                || TargetPlatformInfo.class.isAssignableFrom(type)
056                || TargetPlatformInstance.class.isAssignableFrom(type) || TargetPlatform.class.isAssignableFrom(type)
057                || TargetPlatformsInfo.class.isAssignableFrom(type) || TargetPlatforms.class.isAssignableFrom(type);
058    }
059
060    @Override
061    public long getSize(Object t, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
062        return -1;
063    }
064
065    @Override
066    public void writeTo(Object t, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType,
067            MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException,
068            WebApplicationException {
069        boolean pretty = Boolean.parseBoolean(request.getParameter("pretty"));
070        if (TargetPackage.class.isAssignableFrom(type)) {
071            JSONExporter.exportToJson((TargetPackage) t, entityStream, pretty);
072        } else if (TargetPackageInfo.class.isAssignableFrom(type)) {
073            JSONExporter.exportToJson((TargetPackageInfo) t, entityStream, pretty);
074        } else if (TargetPlatform.class.isAssignableFrom(type)) {
075            JSONExporter.exportToJson((TargetPlatform) t, entityStream, pretty);
076        } else if (TargetPlatformInstance.class.isAssignableFrom(type)) {
077            JSONExporter.exportToJson((TargetPlatformInstance) t, entityStream, pretty);
078        } else if (TargetPlatformInfo.class.isAssignableFrom(type)) {
079            JSONExporter.exportToJson((TargetPlatformInfo) t, entityStream, pretty);
080        } else if (TargetPlatforms.class.isAssignableFrom(type)) {
081            JSONExporter.exportToJson((TargetPlatforms) t, entityStream, pretty);
082        } else if (TargetPlatformsInfo.class.isAssignableFrom(type)) {
083            JSONExporter.exportInfosToJson((TargetPlatformsInfo) t, entityStream, pretty);
084        } else {
085            throw new IllegalArgumentException(String.format("Unsupported type '%s'", type));
086        }
087    }
088}