profiling-db

resolvers/author.py

@@ -193,7 +193,7 @@ async def get_author(_, _info, slug="", author_id=None):
 
 async def get_author_by_user_id(user_id: str):
     redis_key = f"user:{user_id}:author"
-    res = await redis.execute('GET', redis_key)
+    res = await redis.execute("GET", redis_key)
     if isinstance(res, str):
         author = json.loads(res)
         if author.get("id"):
@@ -204,7 +204,7 @@ async def get_author_by_user_id(user_id: str):
     q = select(Author).filter(Author.user == user_id)
     author = await load_author_with_stats(q)
     if author:
-        await redis.execute('set', redis_key, json.dumps(author.dict()))
+        await redis.execute("set", redis_key, json.dumps(author.dict()))
         return author
 
 

resolvers/follower.py

@@ -132,14 +132,14 @@ def query_follows(user_id: str):
 async def get_follows_by_user_id(user_id: str):
     if user_id:
         redis_key = f"user:{user_id}:follows"
-        res = await redis.execute('GET', redis_key)
+        res = await redis.execute("GET", redis_key)
         if isinstance(res, str):
             follows = json.loads(res)
             return follows
 
         logger.debug(f"getting follows for {user_id}")
         follows = query_follows(user_id)
-        await redis.execute('SET', redis_key, json.dumps(follows))
+        await redis.execute("SET", redis_key, json.dumps(follows))
 
         return follows
 

services/db.py

@@ -1,11 +1,12 @@
 import math
+import pstats
 import time
 from functools import wraps
+from sqlalchemy import event, Engine
 from typing import Any, Callable, Dict, TypeVar
 
 from dogpile.cache import make_region
-from sqlalchemy import Column, Integer, create_engine, event
+from sqlalchemy import Column, Integer, create_engine
-from sqlalchemy.engine import Engine
 from sqlalchemy.ext.declarative import declarative_base
 from sqlalchemy.orm import Session
 from sqlalchemy.sql.schema import Table
@@ -21,26 +22,46 @@ T = TypeVar("T")
 REGISTRY: Dict[str, type] = {}
 Base = declarative_base()
 
+def profile_sqlalchemy_queries(threshold=0.1):
+    def decorator(fn):
+        @wraps(fn)
+        def wrapper(*args, **kw):
+            elapsed, stat_loader, result = _profile(fn, threshold, *args, **kw)
+            if elapsed is not None:
+                print(f"Query took {elapsed:.3f} seconds to execute.")
+                stats = stat_loader()
+                stats.sort_stats('cumulative')
+                stats.print_stats()
+            return result
+        return wrapper
+    return decorator
+
+def _profile(fn, threshold, *args, **kw):
+    began = time.time()
+    result = fn(*args, **kw)
+    ended = time.time()
+
+    if ended - began > threshold:
+        return ended - began, pstats.Stats, result
+    else:
+        return None, None, result
 
 # Перехватчики для журнала запросов SQLAlchemy
 @event.listens_for(Engine, "before_cursor_execute")
 def before_cursor_execute(conn, cursor, statement, parameters, context, executemany):
-    query_id = id(cursor)  # Уникальный идентификатор запроса
+    conn._query_start_time = time.time()
-    conn.info.setdefault(f"query_start_time:{query_id}", time.time())
-
 
 @event.listens_for(Engine, "after_cursor_execute")
 def after_cursor_execute(conn, cursor, statement, parameters, context, executemany):
-    query_id = id(cursor)  # Уникальный идентификатор запроса
+    if hasattr(conn, '_query_start_time'):
-    if f"query_start_time:{query_id}" in conn.info:
+        elapsed = time.time() - conn._query_start_time
-        total = time.time() - conn.info.get(f"query_start_time:{query_id}", time.time())
+        del conn._query_start_time
-        try:
+        if elapsed > 0.2:  # Adjust threshold as needed
-            del conn.info[f"query_start_time:{query_id}"]
+            print(f"{'*' * math.floor(elapsed)} {elapsed:.3f} seconds to execute.")
-            stars = "*" * math.floor(total * 1000)
+            # Profile the query if execution time exceeds the threshold
-            if stars:
+            profiler = profile_sqlalchemy_queries(threshold=0.2)(cursor.execute)
-                logger.debug(f"\n{statement}\n {stars} {total*1000} s\n")
+            profiler(statement, parameters)
-        except Exception:
+
-            pass
 
 
 def local_session(src=""):

services/follows.py

@@ -16,7 +16,7 @@ from services.viewed import ViewedStorage
 @event.listens_for(Author, "after_update")
 def after_author_update(mapper, connection, target):
     redis_key = f"user:{target.user}:author"
-    asyncio.create_task(redis.execute('set', redis_key, json.dumps(vars(target))))
+    asyncio.create_task(redis.execute("set", redis_key, json.dumps(vars(target))))
 
 
 @event.listens_for(TopicFollower, "after_insert")
@@ -67,7 +67,7 @@ async def update_follows_for_user(connection, user_id, entity_type, entity, is_i
         follows[f"{entity_type}s"] = [
             e for e in follows[f"{entity_type}s"] if e["id"] != entity.id
         ]
-    await redis.execute('set', redis_key, json.dumps(follows))
+    await redis.execute("set", redis_key, json.dumps(follows))
 
 
 async def handle_author_follower_change(connection, author_id, follower_id, is_insert):
@@ -125,14 +125,21 @@ class FollowsCached:
                     redis_key = f"user:{author.user}:author"
                     author_dict = author.dict()
                     if isinstance(author_dict, dict):
-                        filtered_author_dict = {k: v for k, v in author_dict.items() if v is not None}
+                        filtered_author_dict = {
-                        await redis.execute('set', redis_key, json.dumps(filtered_author_dict))
+                            k: v for k, v in author_dict.items() if v is not None
+                        }
+                        await redis.execute(
+                            "set", redis_key, json.dumps(filtered_author_dict)
+                        )
                     follows = await get_author_follows(None, None, user=author.user)
                     if isinstance(follows, dict):
-                        filtered_follows = {k: v for k, v in follows.items() if v is not None}
+                        filtered_follows = {
+                            k: v for k, v in follows.items() if v is not None
+                        }
                         redis_key = f"user:{author.user}:follows"
-                        await redis.execute('set', redis_key, json.dumps(filtered_follows))
+                        await redis.execute(
-
+                            "set", redis_key, json.dumps(filtered_follows)
+                        )
 
     @staticmethod
     async def worker():

services/rediscache.py

@@ -23,8 +23,8 @@ class RedisCache:
                 logger.debug(f"{command} {args} {kwargs}")
                 for arg in args:
                     if isinstance(arg, dict):
-                        if arg.get('_sa_instance_state'):
+                        if arg.get("_sa_instance_state"):
-                            del arg['_sa_instance_state']
+                            del arg["_sa_instance_state"]
                 r = await self._client.execute_command(command, *args, **kwargs)
                 logger.debug(type(r))
                 logger.debug(r)