bump text

.github/workflows/test-stack-reusable-workflow.yml

@@ -253,30 +253,6 @@ jobs:
           docker logs test-cdio-basic-tests > output-logs/test-cdio-basic-tests-stdout-${{ env.PYTHON_VERSION }}.txt
           docker logs test-cdio-basic-tests 2> output-logs/test-cdio-basic-tests-stderr-${{ env.PYTHON_VERSION }}.txt
 
-      - name: Extract and display memory test report
-        if: always()
-        run: |
-          # Extract test-memory.log from the container
-          echo "Extracting test-memory.log from container..."
-          docker cp test-cdio-basic-tests:/app/changedetectionio/test-memory.log output-logs/test-memory-${{ env.PYTHON_VERSION }}.log || echo "test-memory.log not found in container"
-
-          # Display the memory log contents for immediate visibility in workflow output
-          echo "=== Top 10 Highest Peak Memory Tests ==="
-          if [ -f output-logs/test-memory-${{ env.PYTHON_VERSION }}.log ]; then
-            # Sort by peak memory value (extract number before MB and sort numerically, reverse order)
-            grep "Peak memory:" output-logs/test-memory-${{ env.PYTHON_VERSION }}.log | \
-              sed 's/.*Peak memory: //' | \
-              paste -d'|' - <(grep "Peak memory:" output-logs/test-memory-${{ env.PYTHON_VERSION }}.log) | \
-              sort -t'|' -k1 -nr | \
-              cut -d'|' -f2 | \
-              head -10
-            echo ""
-            echo "=== Full Memory Test Report ==="
-            cat output-logs/test-memory-${{ env.PYTHON_VERSION }}.log
-          else
-            echo "No memory log available"
-          fi
-
       - name: Store everything including test-datastore
         if: always()
         uses: actions/upload-artifact@v4

changedetectionio/__init__.py

@@ -2,7 +2,7 @@
 
 # Read more https://github.com/dgtlmoon/changedetection.io/wiki
 
-__version__ = '0.50.21'
+__version__ = '0.50.20'
 
 from changedetectionio.strtobool import strtobool
 from json.decoder import JSONDecodeError

changedetectionio/async_update_worker.py

@@ -334,10 +334,6 @@ async def async_update_worker(worker_id, q, notification_q, app, datastore):
                             if update_handler.fetcher.content or (not update_handler.fetcher.content and empty_pages_are_a_change):
                                 watch.save_last_fetched_html(contents=update_handler.fetcher.content, timestamp=int(fetch_start_time))
 
-                            # Explicitly delete large content variables to free memory IMMEDIATELY after saving
-                            # These are no longer needed after being saved to history
-                            del contents
-
                             # Send notifications on second+ check
                             if watch.history_n >= 2:
                                 logger.info(f"Change detected in UUID {uuid} - {watch['url']}")
@@ -376,12 +372,6 @@ async def async_update_worker(worker_id, q, notification_q, app, datastore):
                 datastore.update_watch(uuid=uuid, update_obj={'fetch_time': round(time.time() - fetch_start_time, 3),
                                                                'check_count': count})
 
-                # NOW clear fetcher content - after all processing is complete
-                # This is the last point where we need the fetcher data
-                if update_handler and hasattr(update_handler, 'fetcher') and update_handler.fetcher:
-                    update_handler.fetcher.clear_content()
-                    logger.debug(f"Cleared fetcher content for UUID {uuid}")
-
         except Exception as e:
             logger.error(f"Worker {worker_id} unexpected error processing {uuid}: {e}")
             logger.error(f"Worker {worker_id} traceback:", exc_info=True)
@@ -402,28 +392,7 @@ async def async_update_worker(worker_id, q, notification_q, app, datastore):
                         #logger.info(f"Worker {worker_id} sending completion signal for UUID {watch['uuid']}")
                         watch_check_update.send(watch_uuid=watch['uuid'])
 
-                    # Explicitly clean up update_handler and all its references
+                    update_handler = None
-                    if update_handler:
-                        # Clear fetcher content using the proper method
-                        if hasattr(update_handler, 'fetcher') and update_handler.fetcher:
-                            update_handler.fetcher.clear_content()
-
-                        # Clear processor references
-                        if hasattr(update_handler, 'content_processor'):
-                            update_handler.content_processor = None
-
-                        update_handler = None
-
-                    # Clear local contents variable if it still exists
-                    if 'contents' in locals():
-                        del contents
-
-                    # Note: We don't set watch = None here because:
-                    # 1. watch is just a local reference to datastore.data['watching'][uuid]
-                    # 2. Setting it to None doesn't affect the datastore
-                    # 3. GC can't collect the object anyway (still referenced by datastore)
-                    # 4. It would just cause confusion
-
                     logger.debug(f"Worker {worker_id} completed watch {uuid} in {time.time()-fetch_start_time:.2f}s")
                 except Exception as cleanup_error:
                     logger.error(f"Worker {worker_id} error during cleanup: {cleanup_error}")

changedetectionio/content_fetchers/base.py

@@ -64,19 +64,6 @@ class Fetcher():
     # Time ONTOP of the system defined env minimum time
     render_extract_delay = 0
 
-    def clear_content(self):
-        """
-        Explicitly clear all content from memory to free up heap space.
-        Call this after content has been saved to disk.
-        """
-        self.content = None
-        if hasattr(self, 'raw_content'):
-            self.raw_content = None
-        self.screenshot = None
-        self.xpath_data = None
-        # Keep headers and status_code as they're small
-        logger.trace("Fetcher content cleared from memory")
-
     @abstractmethod
     def get_error(self):
         return self.error

changedetectionio/processors/magic.py

@@ -64,31 +64,24 @@ class guess_stream_type():
         # Remove whitespace between < and tag name for robust detection (handles '< html', '<\nhtml', etc.)
         test_content_normalized = re.sub(r'<\s+', '<', test_content)
 
-        # Use puremagic for lightweight MIME detection (saves ~14MB vs python-magic)
+        # Magic will sometimes call text/plain as text/html!
         magic_result = None
         try:
-            import puremagic
+            import magic
 
-            # puremagic needs bytes, so encode if we have a string
+            mime = magic.from_buffer(content[:200], mime=True) # Send the original content
-            content_bytes = content[:200].encode('utf-8') if isinstance(content, str) else content[:200]
+            logger.debug(f"Guessing mime type, original content_type '{http_content_header}', mime type detected '{mime}'")
-
+            if mime and "/" in mime:
-            # puremagic returns a list of PureMagic objects with confidence scores
+                magic_result = mime
-            detections = puremagic.magic_string(content_bytes)
+                # Ignore generic/fallback mime types from magic
-            if detections:
+                if mime in ['application/octet-stream', 'application/x-empty', 'binary']:
-                # Get the highest confidence detection
+                    logger.debug(f"Ignoring generic mime type '{mime}' from magic library")
-                mime = detections[0].mime_type
+                # Trust magic for non-text types immediately
-                logger.debug(f"Guessing mime type, original content_type '{http_content_header}', mime type detected '{mime}'")
+                elif mime not in ['text/html', 'text/plain']:
-                if mime and "/" in mime:
+                    magic_content_header = mime
-                    magic_result = mime
-                    # Ignore generic/fallback mime types
-                    if mime in ['application/octet-stream', 'application/x-empty', 'binary']:
-                        logger.debug(f"Ignoring generic mime type '{mime}' from puremagic library")
-                    # Trust puremagic for non-text types immediately
-                    elif mime not in ['text/html', 'text/plain']:
-                        magic_content_header = mime
 
         except Exception as e:
-            logger.error(f"Error getting a more precise mime type from 'puremagic' library ({str(e)}), using content-based detection")
+            logger.error(f"Error getting a more precise mime type from 'magic' library ({str(e)}), using content-based detection")
 
         # Content-based detection (most reliable for text formats)
         # Check for HTML patterns first - if found, override magic's text/plain

changedetectionio/processors/text_json_diff/processor.py

@@ -556,20 +556,6 @@ class perform_site_check(difference_detection_processor):
             else:
                 logger.debug(f"check_unique_lines: UUID {watch.get('uuid')} had unique content")
 
-        # Note: Explicit cleanup is only needed here because text_json_diff handles
-        # large strings (100KB-300KB for RSS/HTML). The other processors work with
-        # small strings and don't need this.
-        #
-        # Python would clean these up automatically, but explicit `del` frees memory
-        # immediately rather than waiting for function return, reducing peak memory usage.
-        del content
-        if 'html_content' in locals() and html_content is not stripped_text:
-            del html_content
-        if 'text_content_before_ignored_filter' in locals() and text_content_before_ignored_filter is not stripped_text:
-            del text_content_before_ignored_filter
-        if 'text_for_checksuming' in locals() and text_for_checksuming is not stripped_text:
-            del text_for_checksuming
-
         return changed_detected, update_obj, stripped_text
 
     def _apply_diff_filtering(self, watch, stripped_text, text_before_filter):

requirements.txt

@@ -125,9 +125,8 @@ price-parser
 
 # flask_socket_io - incorrect package name, already have flask-socketio above
 
-# Lightweight MIME type detection (saves ~14MB memory vs python-magic/libmagic)
+# So far for detecting correct favicon type, but for other things in the future
-# Used for detecting correct favicon type and content-type detection
+python-magic
-puremagic
 
 # Scheduler - Windows seemed to miss a lot of default timezone info (even "UTC" !)
 tzdata