org.jboss.resteasy.reactive.server.providers.serialisers.StreamingOutputMessageBodyWriter Maven / Gradle / Ivy

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package org.jboss.resteasy.reactive.server.providers.serialisers;

import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

import jakarta.ws.rs.WebApplicationException;
import jakarta.ws.rs.core.MediaType;
import jakarta.ws.rs.core.MultivaluedMap;
import jakarta.ws.rs.core.StreamingOutput;

import org.jboss.resteasy.reactive.server.spi.ResteasyReactiveResourceInfo;
import org.jboss.resteasy.reactive.server.spi.ServerMessageBodyWriter;
import org.jboss.resteasy.reactive.server.spi.ServerRequestContext;

public class StreamingOutputMessageBodyWriter implements ServerMessageBodyWriter {
    @Override
    public boolean isWriteable(Class type, Type genericType, Annotation[] annotations, MediaType mediaType) {
        return doIsWriteable(type);
    }

    @Override
    public boolean isWriteable(Class type, Type genericType, ResteasyReactiveResourceInfo target,
            MediaType mediaType) {
        return doIsWriteable(type);
    }

    private static boolean doIsWriteable(Class type) {
        return StreamingOutput.class.isAssignableFrom(type);
    }

    @Override
    public long getSize(StreamingOutput streamingOutput, Class type, Type genericType, Annotation[] annotations,
            MediaType mediaType) {
        return -1;
    }

    @Override
    public void writeTo(StreamingOutput streamingOutput, Class type, Type genericType, Annotation[] annotations,
            MediaType mediaType, MultivaluedMap httpHeaders, OutputStream entityStream)
            throws IOException, WebApplicationException {
        streamingOutput.write(entityStream);
    }

    @Override
    public void writeResponse(StreamingOutput o, Type genericType, ServerRequestContext context)
            throws WebApplicationException, IOException {
        o.write(context.getOrCreateOutputStream());
    }
}