}

        if (logger.isDebugEnabled()) {
            logger.debug("Thumbnail Directory: {}", baseDir.getAbsolutePath());
        }

        thumbnailTaskQueue = new LinkedBlockingQueue<>(thumbnailTaskQueueSize);
        generating = !Constants.TRUE.equalsIgnoreCase(System.getProperty("fess.thumbnail.process"));
        thumbnailQueueThread = new Thread((Runnable) () -> {

                                "Failed to process a thumbnail content: " + url + " (Response URL is empty)");
                    }
                    return consumer.test(responseData);
                } catch (final CrawlingAccessException e) {
                    if (logger.isDebugEnabled()) {
                        throw new ThumbnailGenerationException("Failed to process a thumbnail content: " + url, e);
                    }

searchlog.request.headers=
searchlog.process.batch_size=100

thumbnail.html.image.min.width=100
thumbnail.html.image.min.height=100
thumbnail.html.image.max.aspect.ratio=3.0
thumbnail.html.image.thumbnail.width=100
thumbnail.html.image.thumbnail.height=100
thumbnail.html.image.format=png
thumbnail.html.image.xpath=//IMG
thumbnail.html.image.exclude.extensions=svg,html,css,js
thumbnail.generator.interval=0
thumbnail.generator.targets=all

    public enum ArtifactType {
        DATA_STORE("fess-ds"), //
        THEME("fess-theme"), //
        INGEST("fess-ingest"), //
        SCRIPT("fess-script"), //
        WEBAPP("fess-webapp"), //
        THUMBNAIL("fess-thumbnail"), //
        CRAWLER("fess-crawler"), //
        UNKNOWN("jar");

        private final String id;

        ArtifactType(final String id) {
            this.id = id;
        }

                                            key="labels.thumbnail"/></span>
                                    <div class="form-inline col-sm-9">
                                        <la:errors property="thumbnail"/>
                                        <div class="form-check">
                                            <la:checkbox styleId="thumbnail" styleClass="form-check-input" property="thumbnail"/>

    private static final String X_ROBOTS_TAG = "X-Robots-Tag";

    private static final String META_NAME_THUMBNAIL_CONTENT = "//META[@name=\"thumbnail\" or @name=\"THUMBNAIL\"]/@content";

    private static final String META_PROPERTY_OGIMAGE_CONTENT = "//META[@property=\"og:image\"]/@content";

        if (StringUtil.isNotBlank(confPath)) {
            buf.append(confPath);
            buf.append(cpSeparator);
        }
        // WEB-INF/env/thumbnail/resources
        buf.append("WEB-INF");
        buf.append(File.separator);
        buf.append("env");
        buf.append(File.separator);
        buf.append(getExecuteType());
        buf.append(File.separator);

        fessConfig.setResultCollapsed(isCheckboxEnabled(form.resultCollapsed));
        fessConfig.setLoginLinkEnabled(isCheckboxEnabled(form.loginLink));
        fessConfig.setThumbnailEnabled(isCheckboxEnabled(form.thumbnail));
        fessConfig.setIncrementalCrawling(isCheckboxEnabled(form.incrementalCrawling));
        fessConfig.setDayForCleanup(form.dayForCleanup);
        fessConfig.setCrawlingThreadCount(form.crawlingThreadCount);

    public static final String RESULT_COLLAPSED_PROPERTY = "result.collapsed";

    public static final String LOGIN_LINK_ENALBED_PROPERTY = "login.link.enabled";

    public static final String THUMBNAIL_ENALBED_PROPERTY = "thumbnail.enabled";

    public static final String IGNORE_FAILURE_TYPE_PROPERTY = "failure.ignoretype";

    public static final String FAILURE_COUNT_THRESHOLD_PROPERTY = "failure.countthreshold";

      },
      "title": {
        "type": "text",
        "analyzer": "standard_analyzer",
        "search_analyzer": "standard_search_analyzer",
        "term_vector": "with_positions_offsets"
      },
      "thumbnail": {
        "type": "keyword"
      },
      "url": {
        "type": "keyword"
      }
    }