001/*
002 * (C) Copyright 2006-2010 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 *     Thierry Delprat
018 */
019package org.nuxeo.apidoc.export;
020
021import java.io.FileInputStream;
022import java.io.IOException;
023import java.io.OutputStream;
024import java.lang.annotation.Annotation;
025import java.lang.reflect.Type;
026
027import javax.ws.rs.Produces;
028import javax.ws.rs.core.MediaType;
029import javax.ws.rs.core.MultivaluedMap;
030import javax.ws.rs.ext.MessageBodyWriter;
031import javax.ws.rs.ext.Provider;
032
033import org.apache.commons.io.IOUtils;
034import org.nuxeo.common.utils.FileUtils;
035import org.nuxeo.ecm.webengine.WebException;
036
037@Provider
038@Produces({ "*/*", "text/plain" })
039public class ArchiveFileWriter implements MessageBodyWriter<ArchiveFile> {
040
041    @Override
042    public void writeTo(ArchiveFile t, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType,
043            MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException {
044        FileInputStream in = null;
045        try {
046            in = new FileInputStream(t);
047            FileUtils.copy(in, entityStream);
048            entityStream.flush();
049        } catch (IOException e) {
050            throw WebException.wrap("Failed to render resource", e);
051        } finally {
052            IOUtils.closeQuietly(in);
053            if (t != null) {
054                t.delete();
055            }
056        }
057    }
058
059    @Override
060    public long getSize(ArchiveFile arg0, Class<?> arg1, Type arg2, Annotation[] arg3, MediaType arg4) {
061        long n = arg0.length();
062        return n <= 0 ? -1 : n;
063    }
064
065    @Override
066    public boolean isWriteable(Class<?> arg0, Type type, Annotation[] arg2, MediaType arg3) {
067        return ArchiveFile.class.isAssignableFrom(arg0);
068    }
069
070}