public void addExcludeFilter(final String regexp) {
        if (StringUtil.isNotBlank(regexp)) {
            urlFilter.addExclude(regexp);
        }
    }

    public void stop() {
        crawlerContext.setStatus(CrawlerStatus.DONE);
        try {
            if (crawlerThreadGroup != null) {
                crawlerThreadGroup.interrupt();
            }
        } catch (final Exception e) {
            // ignore

            if (req.method == "PUT") {
                res.setHeader("location", "/ok")
                res.setStatus(301)
                res.writer.close()
                false
            } else if (req.requestURI == "/ok") {
                res.setStatus(200)
                res.writer.close()
                false
            } else {
                true
            }
        }

        accessResult1.setMimeType("text/plain");
        accessResult1.setParentUrl("http://www.parent.com/");
        accessResult1.setRuleId("htmlRule");
        accessResult1.setSessionId("id1");
        accessResult1.setStatus(200);
        accessResult1.setUrl("http://www.id1.com/");

        dataService.store(accessResult1);

        final EsAccessResult accessResult2 = dataService.getAccessResult("id1", "http://www.id1.com/");

                public void setResult(@Nullable Object result) {
                    context.setResult(result);
                }

                @Override
                public void setStatus(String status) {
                    context.setStatus(status);
                }

                @Override
                public void progress(String status) {
                    context.progress(status);
                }

            } else {
                IO.copy(request.getInputStream(), out);
            }
        } finally {
            out.close();
        }

        response.setStatus(HttpServletResponse.SC_NO_CONTENT);
    }

    /* ------------------------------------------------------------ */

    /**
     *
     */

     */
    void setResult(@Nullable Object result);

    /**
     * Record a status or outcome for given build operation.
     *
     * @param status operation status
     * @since 4.0
     */
    void setStatus(String status);

    /**
     * Indicates some progress of this build operation.
     */
    void progress(String status);

    /**
     * Indicates some progress of this build operation.
     */

                assert accept.length == 2
                assert accept[0] == HttpBuildCacheService.BUILD_CACHE_CONTENT_TYPE
                assert accept[1] == "*/*"

                response.setStatus(200)
            }
        })

        expect:
        cache.load(key) { input -> }
    }

    def "sends X-Gradle-Version and Content-Type headers on PUT"() {

                if (OPTIONS.equals(httpRequest.getMethod())) {
                    final HttpServletResponse httpResponse = (HttpServletResponse) response;
                    httpResponse.setStatus(HttpServletResponse.SC_ACCEPTED);
                    return;
                }
            } else if (logger.isDebugEnabled()) {
                logger.debug("No CorsHandler for {}", origin);
            }
        }

        if (op == null) {
            throw new IllegalStateException("Received progress event for an unknown operation (id: " + operationId + "). Currently in progress=" + operationsById.values());
        }
        op.setStatus(description);
        return op;
    }

    public ProgressOperation complete(OperationIdentifier operationId) {
        ProgressOperation op = operationsById.remove(operationId);
        if (op == null) {

        accessResult1.setMimeType("text/plain");
        accessResult1.setParentUrl("http://www.parent.com/");
        accessResult1.setRuleId("htmlRule");
        accessResult1.setSessionId("id1");
        accessResult1.setStatus(200);
        accessResult1.setUrl("http://www.id1.com/");

        dataService.store(accessResult1);

        final AccessResult accessResult2 = dataService.getAccessResult("id1", "http://www.id1.com/");