public interface ThumbnailGenerator {

    String getName();

    boolean generate(String thumbnailId, File outputFile);

    boolean isTarget(Map<String, Object> docMap);

    boolean isAvailable();

    void destroy();

    Tuple3<String, String, String> createTask(String path, Map<String, Object> docMap);

            return;
        }

        final JobHelper jobHelper = ComponentUtil.getJobHelper();
        if (!jobHelper.isAvailable(id)) {
            logger.info("Job {} is unavailable. Unregistering this job.", id);
            jobHelper.unregister(scheduledJob);
            return;
        }

            }
        } catch (final Exception e) {
            throw new ScheduledJobException("Failed to delete Job: " + scheduledJob, e);
        }
    }

    public boolean isAvailable(final String id) {
        return ComponentUtil.getComponent(ScheduledJobBhv.class).selectByPK(id).filter(e -> Boolean.TRUE.equals(e.getAvailable()))
                .isPresent();
    }

                }
                final ThumbnailGenerator generator = ComponentUtil.getComponent(generatorName);
                if (generator.isAvailable()) {
                    if (!generator.generate(entity.getThumbnailId(), outputFile)) {
                        new File(outputFile.getAbsolutePath() + NOIMAGE_FILE_SUFFIX).setLastModified(systemHelper.getCurrentTimeAsLong());

                }
                return true;
            }
        }
        return false;
    }

    @Override
    public boolean isAvailable() {
        if (available != null) {
            return available;
        }
        if (generatorList != null && !generatorList.isEmpty()) {
            String path = System.getenv("PATH");