fix(api): flask delegates dataset fetch to celery

server/app.py

@@ -20,7 +20,7 @@ from server.db.database import PostgresConnector
 from server.core.auth import AuthManager
 from server.core.datasets import DatasetManager
 from server.utils import get_request_filters, split_limit, get_env
-from server.queue.tasks import process_dataset
+from server.queue.tasks import process_dataset, fetch_and_process_dataset
 from server.connectors.registry import get_available_connectors, get_connector_metadata
 
 app = Flask(__name__)
@@ -130,8 +130,6 @@ def scrape_data():
     search = request.form.get("search")
     category = request.form.get("category")
 
-    print(sources)
-
     if limit > max_fetch_limit:
         return jsonify({"error": f"Due to API limitations, we cannot receive more than ${max_fetch_limit} posts"}), 400
     
@@ -141,20 +139,11 @@ def scrape_data():
         
     limits = split_limit(limit, len(sources))
     per_source = dict(zip(sources, limits))
+    dataset_id = dataset_manager.save_dataset_info(user_id, dataset_name, default_topic_list)
+    dataset_manager.set_dataset_status(dataset_id, "fetching", f"Data is being fetched from {str(sources)}")
 
     try:
-        posts = []
+        fetch_and_process_dataset.delay(dataset_id, per_source, search, category, default_topic_list)
-        for source_name, source_limit in per_source.items():
-            connector = connectors[source_name]()
-            posts.extend(connector.get_new_posts_by_search(
-                search=search,
-                category=category,
-                post_limit=source_limit,
-                comment_limit=source_limit
-            ))
-
-        dataset_id = dataset_manager.save_dataset_info(user_id, dataset_name, {})
-        process_dataset.delay(dataset_id, [p.to_dict() for p in posts], default_topic_list)
 
         return jsonify(
             {

server/queue/tasks.py

@@ -4,6 +4,7 @@ from server.queue.celery_app import celery
 from server.analysis.enrichment import DatasetEnrichment
 from server.db.database import PostgresConnector
 from server.core.datasets import DatasetManager
+from server.connectors.registry import get_available_connectors
 
 @celery.task(bind=True, max_retries=3)
 def process_dataset(self, dataset_id: int, posts: list, topics: dict):
@@ -18,5 +19,31 @@ def process_dataset(self, dataset_id: int, posts: list, topics: dict):
 
         dataset_manager.save_dataset_content(dataset_id, enriched_df)
         dataset_manager.set_dataset_status(dataset_id, "complete", "NLP Processing Completed Successfully")
+    except Exception as e:
+        dataset_manager.set_dataset_status(dataset_id, "error", f"An error occurred: {e}")
+
+@celery.task(bind=True, max_retries=3)
+def fetch_and_process_dataset(self, 
+                              dataset_id: int, 
+                              per_source: dict[str, int], 
+                              search: str, 
+                              category: str, 
+                              topics: dict):
+    connectors = get_available_connectors()
+    db = PostgresConnector()
+    dataset_manager = DatasetManager(db)
+    posts = []
+
+    try:
+        for source_name, source_limit in per_source.items():
+            connector = connectors[source_name]()
+            posts.extend(connector.get_new_posts_by_search(
+                search=search,
+                category=category,
+                post_limit=source_limit,
+                comment_limit=source_limit
+            ))
+
+        process_dataset.delay(dataset_id, [p.to_dict() for p in posts], topics)
     except Exception as e:
         dataset_manager.set_dataset_status(dataset_id, "error", f"An error occurred: {e}")