Examples with Buffer org.eclipse.jetty.io.Buffer used on opensource projects

Example 1 with Buffer

use of org.eclipse.jetty.io.Buffer in project bnd by bndtools.

the class ETaggingResourceHandler method handle.

public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
    if (baseRequest.isHandled())
        return;
    boolean skipContentBody = false;
    if (!HttpMethods.GET.equals(request.getMethod())) {
        if (!HttpMethods.HEAD.equals(request.getMethod())) {
            // try another handler
            super.handle(target, baseRequest, request, response);
            return;
        }
        skipContentBody = true;
    }
    Resource resource = getResource(request);
    if (resource == null || !resource.exists()) {
        // no resource - try other handlers
        super.handle(target, baseRequest, request, response);
        return;
    }
    // We are going to serve something
    baseRequest.setHandled(true);
    if (resource.isDirectory()) {
        response.sendError(HttpStatus.FORBIDDEN_403);
    }
    // set some headers
    long last_modified = resource.lastModified();
    if (last_modified > 0) {
        long if_modified = request.getDateHeader(HttpHeaders.IF_MODIFIED_SINCE);
        if (if_modified > 0 && last_modified / 1000 <= if_modified / 1000) {
            response.setStatus(HttpStatus.NOT_MODIFIED_304);
            return;
        }
    }
    String etag = calculateETag(resource);
    String incomingETag = request.getHeader(HttpHeaders.IF_NONE_MATCH);
    if (incomingETag != null) {
        if (incomingETag.equals(etag)) {
            response.setStatus(HttpStatus.NOT_MODIFIED_304);
            return;
        }
    }
    response.setHeader(HttpHeaders.ETAG, etag);
    Buffer mime = _mimeTypes.getMimeByExtension(resource.toString());
    if (mime == null)
        mime = _mimeTypes.getMimeByExtension(request.getPathInfo());
    // set the headers
    doResponseHeaders(response, resource, mime != null ? mime.toString() : null);
    response.setDateHeader(HttpHeaders.LAST_MODIFIED, last_modified);
    if (skipContentBody)
        return;
    // Send the content
    OutputStream out = null;
    try {
        out = response.getOutputStream();
    } catch (IllegalStateException e) {
        out = new WriterOutputStream(response.getWriter());
    }
    resource.writeTo(out, 0, resource.length());
}