org.jboss.resteasy.plugins.providers.ByteArrayProvider Maven / Gradle / Ivy

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package org.jboss.resteasy.plugins.providers;

import org.jboss.resteasy.resteasy_jaxrs.i18n.LogMessages;
import org.jboss.resteasy.util.MediaTypeHelper;
import org.jboss.resteasy.util.NoContent;
import org.jboss.resteasy.util.ReadFromStream;

import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

/**
 * @author Bill Burke
 * @version $Revision: 1 $
 */
@Provider
@Produces("*/*")
@Consumes("*/*")
public class ByteArrayProvider implements MessageBodyReader, MessageBodyWriter
{
   public boolean isReadable(Class type, Type genericType, Annotation[] annotations, MediaType mediaType)
   {
      return type.isArray() && type.getComponentType().equals(byte.class);
   }

   public byte[] readFrom(Class type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap httpHeaders, InputStream entityStream) throws IOException
   {
      LogMessages.LOGGER.debugf("Provider : %s,  Method : readFrom", getClass().getName());
      if (NoContent.isContentLengthZero(httpHeaders)) return new byte[0];
      return ReadFromStream.readFromStream(1024, entityStream);
   }

   public boolean isWriteable(Class type, Type genericType, Annotation[] annotations, MediaType mediaType)
   {
      return type.isArray() && type.getComponentType().equals(byte.class) && !MediaTypeHelper.isBlacklisted(mediaType);
   }

   public long getSize(byte[] bytes, Class type, Type genericType, Annotation[] annotations, MediaType mediaType)
   {
      return bytes.length;
   }

   public void writeTo(byte[] bytes, Class type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap httpHeaders, OutputStream entityStream) throws IOException
   {
      LogMessages.LOGGER.debugf("Provider : %s,  Method : writeTo", getClass().getName());
      entityStream.write(bytes);
   }
}