super.setUp();

        crawlerThread = new CrawlerThread();
        crawlerContext = new CrawlerContext();
        crawlerContext.sessionId = "test-session";
        crawlerContext.numOfThread = 1;
        crawlerContext.maxThreadCheckCount = 10;
        crawlerContext.maxDepth = 3;
        crawlerContext.maxAccessCount = 0;

        urlQueueService = mock(UrlQueueService.class);

     *
     * @param crawlerContext the crawler context
     * @return true if access count is within limit, false otherwise
     */
    protected boolean checkAccessCount(final CrawlerContext crawlerContext) {
        if (crawlerContext.getMaxAccessCount() > 0) {
            return crawlerContext.incrementAndGetAccessCount() <= crawlerContext.getMaxAccessCount();
        }
        return true;
    }

     * Otherwise, the provided {@code crawlerContext} is set in the thread-local storage.
     *
     * @param crawlerContext the {@link CrawlerContext} to be set for the current thread, or {@code null} to remove the context.
     */
    public static void setCrawlerContext(final CrawlerContext crawlerContext) {
        if (crawlerContext == null) {

```java
// Set maximum number of URLs to crawl
crawler.crawlerContext.setMaxAccessCount(1000);

// Set number of crawler threads
crawler.crawlerContext.setNumOfThread(10);

// Set maximum crawl depth
crawler.crawlerContext.setMaxDepth(3);

// Set request interval (politeness)
crawler.crawlerContext.setDefaultIntervalTime(1000); // 1 second
```

### URL Filtering

```java

        final String url = "http://localhost:7070/hoge.html";
        try {
            final CrawlerContext crawlerContext = new CrawlerContext();
            final String sessionId = "id1";
            urlFilter.init(sessionId);
            crawlerContext.setUrlFilter(urlFilter);
            CrawlingParameterUtil.setCrawlerContext(crawlerContext);
            httpClient.init();
            httpClient.processRobotsTxt(url);

            assertNotSame(crawler1.crawlerContext, crawler2.crawlerContext);

            for (int i = 0; i < 100; i++) {
                if (crawler1.crawlerContext.getStatus() == CrawlerStatus.RUNNING) {
                    break;
                }
                Thread.sleep(50);
            }
            assertEquals(CrawlerStatus.RUNNING, crawler1.crawlerContext.getStatus());

void cleanup(String sessionId)  // Clean up session
void stop()                     // Stop gracefully
```

**Key Fields**: `crawlerContext`, `urlFilter`, `intervalController`, `clientFactory`, `ruleManager`

### CrawlerContext (`CrawlerContext.java`)

Execution context and configuration.

**Important Fields**:
```java
String sessionId                // Format: yyyyMMddHHmmssSSS

                    log(logHelper, LogType.NOT_MODIFIED, crawlerContext, urlQueue);

                    responseData.setExecutionTime(systemHelper.getCurrentTimeAsLong() - startTime);
                    responseData.setParentUrl(urlQueue.getParentUrl());
                    responseData.setSessionId(crawlerContext.getSessionId());

            // not support robots.txt
            return;
        }

        // crawler context
        final CrawlerContext crawlerContext = CrawlingParameterUtil.getCrawlerContext();
        if (crawlerContext == null) {
            // wrong state
            return;
        }

        final int idx = url.indexOf('/', url.indexOf("://") + 3);
        String hostUrl;