feat(crawl): add maxDiscoveryDepth (#1329)

apps/api/src/__tests__/snips/crawl.test.ts

@@ -53,4 +53,21 @@ describe("Crawl tests", () => {
             }
         }
     }, 120000);
+    
+    it.concurrent("discovers URLs properly when maxDiscoveryDepth is provided", async () => {
+        const res = await crawl({
+            url: "https://firecrawl.dev",
+            ignoreSitemap: true,
+            maxDiscoveryDepth: 1,
+            limit: 10,
+        });
+
+        expect(res.success).toBe(true);
+        if (res.success) {
+            expect(res.data.length).toBeGreaterThan(1);
+            for (const page of res.data) {
+                expect(page.metadata.url ?? page.metadata.sourceURL).not.toMatch(/^https:\/\/(www\.)?firecrawl\.dev\/blog\/.+$/);
+            }
+        }
+    }, 120000);
 });

apps/api/src/controllers/v1/types.ts

@@ -440,6 +440,7 @@ const crawlerOptions = z
     includePaths: z.string().array().default([]),
     excludePaths: z.string().array().default([]),
     maxDepth: z.number().default(10), // default?
+    maxDiscoveryDepth: z.number().optional(),
     limit: z.number().default(10000), // default?
     allowBackwardLinks: z.boolean().default(false), // >> TODO: CHANGE THIS NAME???
     allowExternalLinks: z.boolean().default(false),
@@ -793,6 +794,8 @@ export function toLegacyCrawlerOptions(x: CrawlerOptions) {
     deduplicateSimilarURLs: x.deduplicateSimilarURLs,
     ignoreQueryParameters: x.ignoreQueryParameters,
     regexOnFullURL: x.regexOnFullURL,
+    maxDiscoveryDepth: x.maxDiscoveryDepth,
+    currentDiscoveryDepth: 0,
   };
 }
 
@@ -814,7 +817,8 @@ export function fromLegacyCrawlerOptions(x: any): {
       deduplicateSimilarURLs: x.deduplicateSimilarURLs,
       ignoreQueryParameters: x.ignoreQueryParameters,
       regexOnFullURL: x.regexOnFullURL,
-    }),
+      maxDiscoveryDepth: x.maxDiscoveryDepth,
+   }),
     internalOptions: {
       v0CrawlOnlyUrls: x.returnOnlyUrls,
     },

apps/api/src/lib/crawl-redis.ts

@@ -379,6 +379,7 @@ export function crawlToCrawler(
   id: string,
   sc: StoredCrawl,
   newBase?: string,
+  crawlerOptions?: any,
 ): WebCrawler {
   const crawler = new WebCrawler({
     jobId: id,
@@ -399,6 +400,8 @@ export function crawlToCrawler(
     allowSubdomains: sc.crawlerOptions?.allowSubdomains ?? false,
     ignoreRobotsTxt: sc.crawlerOptions?.ignoreRobotsTxt ?? false,
     regexOnFullURL: sc.crawlerOptions?.regexOnFullURL ?? false,
+    maxDiscoveryDepth: sc.crawlerOptions?.maxDiscoveryDepth,
+    currentDiscoveryDepth: crawlerOptions?.currentDiscoveryDepth ?? 0,
   });
 
   if (sc.robots !== undefined) {

apps/api/src/scraper/WebScraper/crawler.ts

@@ -31,6 +31,8 @@ export class WebCrawler {
   private regexOnFullURL: boolean;
   private logger: typeof _logger;
   private sitemapsHit: Set<string> = new Set();
+  private maxDiscoveryDepth: number | undefined;
+  private currentDiscoveryDepth: number;
 
   constructor({
     jobId,
@@ -47,6 +49,8 @@ export class WebCrawler {
     allowSubdomains = false,
     ignoreRobotsTxt = false,
     regexOnFullURL = false,
+    maxDiscoveryDepth,
+    currentDiscoveryDepth,
   }: {
     jobId: string;
     initialUrl: string;
@@ -62,6 +66,8 @@ export class WebCrawler {
     allowSubdomains?: boolean;
     ignoreRobotsTxt?: boolean;
     regexOnFullURL?: boolean;
+    maxDiscoveryDepth?: number;
+    currentDiscoveryDepth?: number;
   }) {
     this.jobId = jobId;
     this.initialUrl = initialUrl;
@@ -81,6 +87,8 @@ export class WebCrawler {
     this.ignoreRobotsTxt = ignoreRobotsTxt ?? false;
     this.regexOnFullURL = regexOnFullURL ?? false;
     this.logger = _logger.child({ crawlId: this.jobId, module: "WebCrawler" });
+    this.maxDiscoveryDepth = maxDiscoveryDepth;
+    this.currentDiscoveryDepth = currentDiscoveryDepth ?? 0;
   }
 
   public filterLinks(
@@ -89,6 +97,11 @@ export class WebCrawler {
     maxDepth: number,
     fromMap: boolean = false,
   ): string[] {
+    if (this.currentDiscoveryDepth === this.maxDiscoveryDepth) {
+      this.logger.debug("Max discovery depth hit, filtering off all links", { currentDiscoveryDepth: this.currentDiscoveryDepth, maxDiscoveryDepth: this.maxDiscoveryDepth });
+      return [];
+    }
+
     // If the initial URL is a sitemap.xml, skip filtering
     if (this.initialUrl.endsWith("sitemap.xml") && fromMap) {
       return sitemapLinks.slice(0, limit);

apps/api/src/services/queue-worker.ts

@@ -1044,6 +1044,7 @@ async function processJob(job: Job & { id: string }, token: string) {
             job.data.crawl_id,
             sc,
             doc.metadata.url ?? doc.metadata.sourceURL ?? sc.originUrl!,
+            job.data.crawlerOptions,
           );
 
           const links = crawler.filterLinks(
@@ -1088,6 +1089,10 @@ async function processJob(job: Job & { id: string }, token: string) {
                   team_id: sc.team_id,
                   scrapeOptions: scrapeOptions.parse(sc.scrapeOptions),
                   internalOptions: sc.internalOptions,
+                  crawlerOptions: {
+                    ...sc.crawlerOptions,
+                    currentDiscoveryDepth: (job.data.crawlerOptions?.currentDiscoveryDepth ?? 0) + 1,
+                  },
                   plan: job.data.plan,
                   origin: job.data.origin,
                   crawl_id: job.data.crawl_id,

apps/js-sdk/firecrawl/src/index.ts

@@ -160,6 +160,7 @@ export interface CrawlParams {
   includePaths?: string[];
   excludePaths?: string[];
   maxDepth?: number;
+  maxDiscoveryDepth?: number;
   limit?: number;
   allowBackwardLinks?: boolean;
   allowExternalLinks?: boolean;