Logging the cache buildup process

openslides/utils/cache.py

@@ -1,5 +1,6 @@
 import asyncio
 import json
+import logging
 from collections import defaultdict
 from datetime import datetime
 from time import sleep
@@ -19,6 +20,9 @@ from .redis import use_redis
 from .utils import get_element_id, split_element_id
 
 
+logger = logging.getLogger(__name__)
+
+
 class ElementCache:
     """
     Cache for the elements.
@@ -99,6 +103,7 @@ class ElementCache:
             lock_name = "ensure_cache"
             # Set a lock so only one process builds the cache
             if async_to_sync(self.cache_provider.set_lock)(lock_name):
+                logger.info("Building up the cache data...")
                 try:
                     mapping = {}
                     for collection_string, cachable in self.cachables.items():
@@ -110,12 +115,17 @@ class ElementCache:
                                     ): json.dumps(element)
                                 }
                             )
+                    logger.info("Done building the cache data.")
+                    logger.info("Saving cache data into the cache...")
                     async_to_sync(self.cache_provider.reset_full_cache)(mapping)
+                    logger.info("Done saving the cache data.")
                 finally:
                     async_to_sync(self.cache_provider.del_lock)(lock_name)
             else:
+                logger.info("Wait for another process to build up the cache...")
                 while async_to_sync(self.cache_provider.get_lock)(lock_name):
                     sleep(0.01)
+                logger.info("Cache is ready (built by another process).")
 
         self.ensured = True
 

openslides/utils/models.py

@@ -1,3 +1,5 @@
+import logging
+import time
 from typing import Any, Dict, List, Optional
 
 from django.core.exceptions import ImproperlyConfigured
@@ -9,6 +11,9 @@ from .rest_api import model_serializer_classes
 from .utils import convert_camel_case_to_pseudo_snake_case
 
 
+logger = logging.getLogger(__name__)
+
+
 class MinMaxIntegerField(models.IntegerField):
     """
     IntegerField with options to set a min- and a max-value.
@@ -120,6 +125,7 @@ class RESTModelMixin:
         """
         Returns all elements as full_data.
         """
+        logger.info(f"Loading {cls.get_collection_string()}")
         # Get the query to receive all data from the database.
         try:
             query = cls.objects.get_full_queryset()  # type: ignore
@@ -129,7 +135,21 @@ class RESTModelMixin:
             query = cls.objects  # type: ignore
 
         # Build a dict from the instance id to the full_data
-        return [instance.get_full_data() for instance in query.all()]
+        instances = query.all()
+        full_data = []
+
+        # For logging the progress
+        last_time = time.time()
+        instances_length = len(instances)
+        for i, instance in enumerate(instances):
+            # Append full data from this instance
+            full_data.append(instance.get_full_data())
+            # log progress every 5 seconds
+            current_time = time.time()
+            if current_time > last_time + 5:
+                last_time = current_time
+                logger.info(f"\t{i+1}/{instances_length}...")
+        return full_data
 
     @classmethod
     async def restrict_elements(