001/*
002 * (C) Copyright 2006-2016 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.ecm.webengine.WebException;
035
036@Provider
037@Produces({ "*/*", "text/plain" })
038public class ArchiveFileWriter implements MessageBodyWriter<ArchiveFile> {
039
040    @Override
041    public void writeTo(ArchiveFile t, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType,
042            MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException {
043        try (FileInputStream in = new FileInputStream(t)) {
044            IOUtils.copy(in, entityStream);
045            entityStream.flush();
046        } catch (IOException e) {
047            throw WebException.wrap("Failed to render resource", e);
048        } finally {
049            if (t != null) {
050                t.delete();
051            }
052        }
053    }
054
055    @Override
056    public long getSize(ArchiveFile arg0, Class<?> arg1, Type arg2, Annotation[] arg3, MediaType arg4) {
057        long n = arg0.length();
058        return n <= 0 ? -1 : n;
059    }
060
061    @Override
062    public boolean isWriteable(Class<?> arg0, Type type, Annotation[] arg2, MediaType arg3) {
063        return ArchiveFile.class.isAssignableFrom(arg0);
064    }
065
066}