Examples with CompressedResourceEntity io.milton.http.entity.CompressedResourceEntity used on opensource projects

Example 1 with CompressedResourceEntity

use of io.milton.http.entity.CompressedResourceEntity in project lobcder by skoulouzis.

the class CompressingResponseHandler method respondContent.

@Override
public void respondContent(Resource resource, Response response, Request request, Map<String, String> params) throws NotAuthorizedException, BadRequestException, NotFoundException {
    if (resource instanceof GetableResource) {
        GetableResource r = (GetableResource) resource;
        String acceptableContentTypes = request.getAcceptHeader();
        String contentType = r.getContentType(acceptableContentTypes);
        // Experimental support for already compressed content...
        String acceptableEncodings = request.getAcceptEncodingHeader();
        if (r instanceof CompressedResource) {
            CompressedResource compressedResource = (CompressedResource) r;
            String acceptableEncoding = compressedResource.getSupportedEncoding(acceptableEncodings);
            if (acceptableEncoding != null) {
                response.setContentTypeHeader(contentType);
                cacheControlHelper.setCacheControl(r, response, request.getAuthorization());
                Long contentLength = compressedResource.getCompressedContentLength(acceptableEncoding);
                response.setContentLengthHeader(contentLength);
                response.setContentEncodingHeader(Response.ContentEncoding.GZIP);
                response.setVaryHeader("Accept-Encoding");
                response.setEntity(new CompressedResourceEntity(compressedResource, params, contentType, acceptableEncoding));
                return;
            }
        }
        if (canCompress(r, contentType, acceptableEncodings)) {
            log.trace("respondContent: compressable");
            // get the zipped content before sending so we can determine its
            // compressed size
            BufferingOutputStream tempOut = new BufferingOutputStream(maxMemorySize);
            try {
                OutputStream gzipOut = new GZIPOutputStream(tempOut);
                r.sendContent(gzipOut, null, params, contentType);
                gzipOut.flush();
                gzipOut.close();
                tempOut.flush();
            } catch (NotFoundException e) {
                throw e;
            } catch (Exception ex) {
                tempOut.deleteTempFileIfExists();
                throw new RuntimeException(ex);
            } finally {
                FileUtils.close(tempOut);
            }
            log.trace("respondContent-compressed: " + resource.getClass());
            setRespondContentCommonHeaders(response, resource, Response.Status.SC_OK, request.getAuthorization());
            response.setContentEncodingHeader(Response.ContentEncoding.GZIP);
            response.setVaryHeader("Accept-Encoding");
            Long contentLength = tempOut.getSize();
            if (contentLength != null) {
                response.setContentLengthHeader(contentLength);
            }
            response.setContentTypeHeader(contentType);
            cacheControlHelper.setCacheControl(r, response, request.getAuthorization());
            response.setEntity(new InputStreamEntity(tempOut.getInputStream()));
        } else {
            log.trace("respondContent: not compressable");
            // We really should set this header, but it causes IE to not cache files (eg images)
            // response.setVaryHeader( "Accept-Encoding" );
            wrapped.respondContent(resource, response, request, params);
        }
    } else {
        throw new RuntimeException("Cant generate content for non-Getable resource: " + resource.getClass());
    }
}