| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with this |
| * work for additional information regarding copyright ownership. The ASF |
| * licenses this file to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.oodt.cas.product.jaxrs.writers; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.lang.annotation.Annotation; |
| import java.lang.reflect.Type; |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| import javax.ws.rs.Produces; |
| import javax.ws.rs.WebApplicationException; |
| import javax.ws.rs.core.MediaType; |
| import javax.ws.rs.core.MultivaluedMap; |
| import javax.ws.rs.ext.MessageBodyWriter; |
| import javax.ws.rs.ext.Provider; |
| |
| import org.apache.commons.io.IOUtils; |
| import org.apache.oodt.cas.product.jaxrs.exceptions.BadRequestException; |
| import org.apache.oodt.cas.product.jaxrs.exceptions.NotFoundException; |
| import org.apache.oodt.cas.product.jaxrs.resources.ReferenceResource; |
| import org.apache.tika.Tika; |
| import org.apache.tika.mime.MimeType; |
| |
| /** |
| * A {@link Provider} that writes {@link ReferenceResource reference resources} |
| * to output streams for HTTP responses with different file content-types. |
| * @author rlaidlaw |
| * @version $Revision$ |
| */ |
| @Provider |
| @Produces("application/octet-stream") |
| public class ReferenceFileWriter implements MessageBodyWriter<ReferenceResource> |
| { |
| private static final Logger LOGGER = Logger.getLogger(ReferenceFileWriter |
| .class.getName()); |
| |
| |
| |
| @Override |
| public long getSize(ReferenceResource resource, Class<?> type, |
| Type genericType, Annotation[] annotations, MediaType mediaType) |
| { |
| return -1; |
| } |
| |
| |
| |
| @Override |
| public boolean isWriteable(Class<?> type, Type genericType, |
| Annotation[] annotations, MediaType mediaType) |
| { |
| return true; |
| } |
| |
| |
| |
| @Override |
| public void writeTo(ReferenceResource resource, Class<?> type, |
| Type genericType, Annotation[] annotations, MediaType mediaType, |
| MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) |
| throws IOException, WebApplicationException |
| { |
| String contentType; |
| String dataStoreReference = resource.getDataStoreReference(); |
| MimeType mimeType = resource.getMimeType(); |
| if (mimeType != null && |
| mimeType.getName() != null && |
| !mimeType.getName().equals("")) |
| { |
| contentType = mimeType.getName(); |
| } |
| else |
| { |
| contentType = new Tika().detect(dataStoreReference); |
| } |
| |
| try |
| { |
| File file = new File(new URI(dataStoreReference)); |
| if (!file.exists() || file.isDirectory()) |
| { |
| String message = |
| "Could not locate the reference source file(s) in the data store."; |
| LOGGER.log(Level.FINE, message); |
| throw new BadRequestException(message); |
| } |
| |
| httpHeaders.add("Content-Type", contentType); |
| httpHeaders.add("Content-Disposition", |
| "attachment; filename=\"" + file.getName() + "\""); |
| FileInputStream fis = new FileInputStream(file); |
| IOUtils.copy(fis, entityStream); |
| fis.close(); |
| } |
| catch (URISyntaxException e) |
| { |
| String message = |
| "Problem with the data store URI for the reference source file(s)."; |
| LOGGER.log(Level.FINE, message, e); |
| throw new NotFoundException(message + " " + e.getMessage()); |
| } |
| } |
| } |