}

            log.info("Created {} channels for session {}", channelGroup.getChannelCount(), sessionId);
            return channelGroup;

        } catch (Exception e) {
            sessionChannels.remove(sessionId);
            throw new CIFSException("Failed to create channels for session " + sessionId, e);
        }
    }

    /**

// Count
int count = ds.getCount(sessionId);

// Get by URL
AccessResult result = ds.getAccessResult(sessionId, url);

// Iterate all
ds.iterate(sessionId, accessResult -> {
    System.out.println(accessResult.getUrl());
    System.out.println(accessResult.getContent());
});

// Cleanup
ds.delete(sessionId);
```

### Resource Cleanup Pattern

```java

     */
    public static class Options {

        /** Session ID for the crawling session. If not provided, a timestamp-based ID will be generated. */
        @Option(name = "-s", aliases = "--sessionId", metaVar = "sessionId", usage = "Session ID")
        public String sessionId;

        /** Name for the crawling session for identification purposes. */

        return this;
    }

    /**
     * Sets the session ID for this job execution.
     *
     * @param sessionId the unique session identifier
     * @return this ExecJob instance for method chaining
     */
    public ExecJob sessionId(final String sessionId) {
        this.sessionId = sessionId;
        return this;
    }

    /**

                return;
            }
            final String sessionId = initParamMap.getAsString(Constants.SESSION_ID);
            if (StringUtil.isBlank(sessionId)) {
                logger.warn("[{}] Cannot delete stale documents: sessionId is not set.", dataConfig.getName());
                return;
            }

     */
    @Override
    public String getSessionId() {
        return sessionId;
    }

    /*
     * (non-Javadoc)
     *
     * @see org.codelibs.fess.crawler.entity.UrlQueue#setSessionId(java.lang.String)
     */
    @Override
    public void setSessionId(final String sessionId) {
        this.sessionId = sessionId;
    }

    /*
     * (non-Javadoc)
     *

     *
     * @param parentUrl the parent URL to get encoding for
     * @param sessionId the session ID for the crawling session
     * @return the character encoding, or null if not found
     */
    default String getParentEncoding(final String parentUrl, final String sessionId) {
        final String key = sessionId + ":" + parentUrl;
        String enc = parentEncodingMap.get(key);
        if (enc != null) {

        context.put("thread", Thread.currentThread().getName());
        context.put("threadId", Thread.currentThread().getId());

        String sessionId = MDC.get("sessionId");
        if (sessionId != null) {
            context.put("sessionId", sessionId);
        }
        String userId = MDC.get("userId");
        if (userId != null) {
            context.put("userId", userId);
        }
    }

            }

            final String sessionId;
            if (searchLog.getUserSessionId() != null) {
                sessionId = searchLog.getUserSessionId();
            } else if (Constants.SEARCH_LOG_ACCESS_TYPE_WEB.equals(searchLog.getAccessType())) {
                sessionId = searchLog.getClientIp();
            } else {
                sessionId = searchLog.getClientIp() + '_' + searchLog.getSearchWord();

     * Initiates crawling for specified web and file configurations.
     *
     * @param sessionId The session ID for this crawling operation
     * @param webConfigIdList List of web configuration IDs to crawl, null for all
     * @param fileConfigIdList List of file configuration IDs to crawl, null for all
     */
    public void crawl(final String sessionId, final List<String> webConfigIdList, final List<String> fileConfigIdList) {