From 50f07f9ef5f64292ba6e9f6e7b9cc2b2bafc60c0 Mon Sep 17 00:00:00 2001
From: Pavel <pabin@yandex.ru>
Date: Thu, 12 Oct 2023 12:53:33 +0400
Subject: [PATCH] limit crawler

---
 application/parser/remote/crawler_loader.py | 49 ++++++++++++++-------
 1 file changed, 32 insertions(+), 17 deletions(-)

diff --git a/application/parser/remote/crawler_loader.py b/application/parser/remote/crawler_loader.py
index 208195cb7..9acb8f39f 100644
--- a/application/parser/remote/crawler_loader.py
+++ b/application/parser/remote/crawler_loader.py
@@ -4,33 +4,48 @@
 from application.parser.remote.base import BaseRemote
 
 class CrawlerLoader(BaseRemote):
-    def __init__(self):
+    def __init__(self, limit=10):
         from langchain.document_loaders import WebBaseLoader
         self.loader = WebBaseLoader
+        self.limit = limit
 
     def load_data(self, url):
-        # Fetch the content of the initial URL
-        response = requests.get(url)
-        if response.status_code != 200:
-            print(f"Failed to fetch initial URL: {url}")
-            return None
-
-        # Parse the HTML content
-        soup = BeautifulSoup(response.text, 'html.parser')
+        # Create a set to store visited URLs to avoid revisiting the same page
+        visited_urls = set()
 
         # Extract the base URL to ensure we only fetch URLs from the same domain
         base_url = urlparse(url).scheme + "://" + urlparse(url).hostname
 
-        # Extract all links from the HTML content
-        all_links = [a['href'] for a in soup.find_all('a', href=True)]
+        # Initialize a list with the initial URL
+        urls_to_visit = [url]
+
+        while urls_to_visit:
+            current_url = urls_to_visit.pop(0)
+            visited_urls.add(current_url)
+
+            # Fetch the content of the current URL
+            response = requests.get(current_url)
+            if response.status_code != 200:
+                print(f"Failed to fetch URL: {current_url}")
+                continue
+
+            # Parse the HTML content
+            soup = BeautifulSoup(response.text, 'html.parser')
+
+            # Extract all links from the HTML content
+            all_links = [urljoin(current_url, a['href']) for a in soup.find_all('a', href=True) if base_url in urljoin(current_url, a['href'])]
+
+            # Add the new links to the urls_to_visit list if they haven't been visited yet
+            urls_to_visit.extend([link for link in all_links if link not in visited_urls])
 
-        # Filter out the links that lead to a different domain
-        same_domain_links = [urljoin(base_url, link) for link in all_links if base_url in urljoin(base_url, link)]
+            # Remove duplicates
+            urls_to_visit = list(set(urls_to_visit))
 
-        # Remove duplicates
-        same_domain_links = list(set(same_domain_links))
+            # Stop if the limit is reached
+            if self.limit is not None and len(visited_urls) >= self.limit:
+                break
 
         #TODO: Optimize this section to parse pages as they are being crawled
-        loaded_content = self.loader(same_domain_links).load()
+        loaded_content = self.loader(list(visited_urls)).load()
 
-        return loaded_content
+        return loaded_content
\ No newline at end of file