mariadb -> postgres

app/__main__.py

@@ -12,17 +12,18 @@ try:
 except BaseException:
     pass
 
-from app.core._utils.create_maria_tables import create_maria_tables
+from app.core._utils.create_maria_tables import create_db_tables
 from app.core.storage import engine
 if startup_target == '__main__':
-    create_maria_tables(engine)
+    # Ensure DB schema exists (async engine)
+    asyncio.get_event_loop().run_until_complete(create_db_tables(engine))
 else:
     time.sleep(7)
 
 from app.api import app
 from app.bot import dp as uploader_bot_dp
 from app.client_bot import dp as client_bot_dp
-from app.core._config import SANIC_PORT, MYSQL_URI, PROJECT_HOST
+from app.core._config import SANIC_PORT, PROJECT_HOST, DATABASE_URL
 from app.core.logger import make_log
 
 if int(os.getenv("SANIC_MAINTENANCE", '0')) == 1:
@@ -52,7 +53,11 @@ async def execute_queue(app):
     make_log(None, f"Application normally started. HTTP port: {SANIC_PORT}")
     make_log(None, f"Telegram bot: https://t.me/{telegram_bot_username}")
     make_log(None, f"Client Telegram bot: https://t.me/{client_telegram_bot_username}")
-    make_log(None, f"MariaDB host: {MYSQL_URI.split('@')[1].split('/')[0].replace('/', '')}")
+    try:
+        _db_host = DATABASE_URL.split('@')[1].split('/')[0].replace('/', '')
+    except Exception:
+        _db_host = 'postgres://'
+    make_log(None, f"PostgreSQL host: {_db_host}")
     make_log(None, f"API host: {PROJECT_HOST}")
     while True:
         try:

app/api/middleware.py

@@ -8,7 +8,8 @@ from app.core.models.keys import KnownKey
 from app.core.models._telegram.wrapped_bot import Wrapped_CBotChat
 from app.core.models.user_activity import UserActivity
 from app.core.models.user import User
-from app.core.storage import Session
+from sqlalchemy import select
+from app.core.storage import new_session
 from datetime import datetime, timedelta
 
 
@@ -30,7 +31,8 @@ async def try_authorization(request):
         make_log("auth", "Invalid token length", level="warning")
         return
 
-    known_key = request.ctx.db_session.query(KnownKey).filter(KnownKey.seed == token).first()
+    result = await request.ctx.db_session.execute(select(KnownKey).where(KnownKey.seed == token))
+    known_key = result.scalars().first()
     if not known_key:
         make_log("auth", "Unknown key", level="warning")
         return
@@ -58,7 +60,8 @@ async def try_authorization(request):
         make_log("auth", f"User ID mismatch: {known_key.meta.get('I_user_id', -1)} != {user_id}", level="warning")
         return
 
-    user = request.ctx.db_session.query(User).filter(User.id == known_key.meta['I_user_id']).first()
+    result = await request.ctx.db_session.execute(select(User).where(User.id == known_key.meta['I_user_id']))
+    user = result.scalars().first()
     if not user:
         make_log("auth", "No user from key", level="warning")
         return
@@ -130,14 +133,14 @@ async def save_activity(request):
         created=datetime.now()
     )
     request.ctx.db_session.add(new_user_activity)
-    request.ctx.db_session.commit()
+    await request.ctx.db_session.commit()
 
 
 async def attach_user_to_request(request):
     if request.method == 'OPTIONS':
         return attach_headers(sanic_response.text("OK"))
 
-    request.ctx.db_session = Session()
+    request.ctx.db_session = new_session()
     request.ctx.verified_hash = None
     request.ctx.user = None
     request.ctx.user_key = None
@@ -153,8 +156,8 @@ async def close_request_handler(request, response):
         response = sanic_response.text("OK")
 
     try:
-        request.ctx.db_session.close()
+        await request.ctx.db_session.close()
-    except BaseException as e:
+    except BaseException:
         pass
 
     response = attach_headers(response)

app/api/routes/_blockchain.py

@@ -3,7 +3,7 @@ from datetime import datetime
 import traceback
 
 from sanic import response
-from sqlalchemy import and_
+from sqlalchemy import and_, select, func
 from tonsdk.boc import begin_cell, begin_dict
 from tonsdk.utils import Address
 
@@ -61,9 +61,9 @@ async def s_api_v1_blockchain_send_new_content_message(request):
         assert not err, f"Invalid content CID"
 
         # Поиск исходного файла загруженного
-        decrypted_content = request.ctx.db_session.query(StoredContent).filter(
+        decrypted_content = (await request.ctx.db_session.execute(
-            StoredContent.hash == decrypted_content_cid.content_hash_b58
+            select(StoredContent).where(StoredContent.hash == decrypted_content_cid.content_hash_b58)
-        ).first()
+        )).scalars().first()
         assert decrypted_content, "No content locally found"
         assert decrypted_content.type == "local/content_bin", "Invalid content type"
 
@@ -74,9 +74,9 @@ async def s_api_v1_blockchain_send_new_content_message(request):
         if request.json['image']:
             image_content_cid, err = resolve_content(request.json['image'])
             assert not err, f"Invalid image CID"
-            image_content = request.ctx.db_session.query(StoredContent).filter(
+            image_content = (await request.ctx.db_session.execute(
-                StoredContent.hash == image_content_cid.content_hash_b58
+                select(StoredContent).where(StoredContent.hash == image_content_cid.content_hash_b58)
-            ).first()
+            )).scalars().first()
             assert image_content, "No image locally found"
         else:
             image_content_cid = None
@@ -105,18 +105,22 @@ async def s_api_v1_blockchain_send_new_content_message(request):
             )
             i += 1
 
-        promo_free_upload_available = (
+        _cnt = (await request.ctx.db_session.execute(
-            3 - (request.ctx.db_session.query(PromoAction).filter(
+            select(func.count()).select_from(PromoAction).where(
-                PromoAction.user_internal_id == request.ctx.user.id,
-                PromoAction.action_type == 'freeUpload',
-            ).count())
-        )
-        if request.ctx.db_session.query(BlockchainTask).filter(
                 and_(
-                BlockchainTask.user_id == request.ctx.user.id,
+                    PromoAction.user_internal_id == request.ctx.user.id,
-                BlockchainTask.status != 'done',
+                    PromoAction.action_type == 'freeUpload'
                 )
-        ).first():
+            )
+        )).scalar()
+        promo_free_upload_available = 3 - int(_cnt or 0)
+
+        has_pending_task = (await request.ctx.db_session.execute(
+            select(BlockchainTask).where(
+                and_(BlockchainTask.user_id == request.ctx.user.id, BlockchainTask.status != 'done')
+            )
+        )).scalars().first()
+        if has_pending_task:
             make_log("Blockchain", f"User {request.ctx.user.id} already has a pending task", level='warning')
             promo_free_upload_available = 0
 
@@ -139,7 +143,7 @@ async def s_api_v1_blockchain_send_new_content_message(request):
                     begin_cell()
                         .store_uint(0x5491d08c, 32)
                         .store_uint(int.from_bytes(encrypted_content_cid.content_hash, "big", signed=False), 256)
-                        .store_address(Address(request.ctx.user.wallet_address(request.ctx.db_session)))
+                        .store_address(Address(await request.ctx.user.wallet_address_async(request.ctx.db_session)))
                         .store_ref(
                             begin_cell()
                                 .store_ref(
@@ -177,7 +181,7 @@ async def s_api_v1_blockchain_send_new_content_message(request):
                 user_id = request.ctx.user.id
             )
             request.ctx.db_session.add(blockchain_task)
-            request.ctx.db_session.commit()
+            await request.ctx.db_session.commit()
 
             await request.ctx.user_uploader_wrapper.send_message(
                 request.ctx.user.translated('p_uploadContentTxPromo').format(
@@ -258,18 +262,37 @@ async def s_api_v1_blockchain_send_purchase_content_message(request):
         assert field_key in request.json, f"No {field_key} provided"
         assert field_value(request.json[field_key]), f"Invalid {field_key} provided"
 
-    if not request.ctx.user.wallet_address(request.ctx.db_session):
+    if not (await request.ctx.user.wallet_address_async(request.ctx.db_session)):
         return response.json({"error": "No wallet address provided"}, status=400)
 
-    license_exist = request.ctx.db_session.query(UserContent).filter_by(
+    from sqlalchemy import select
-        onchain_address=request.json['content_address'],
+    license_exist = (await request.ctx.db_session.execute(select(UserContent).where(
-    ).first()
+        UserContent.onchain_address == request.json['content_address']
+    ))).scalars().first()
     if license_exist:
-        r_content = StoredContent.from_cid(request.ctx.db_session, license_exist.content.cid.serialize_v2())
+        from app.core.content.content_id import ContentId
+        _cid = ContentId.deserialize(license_exist.content.cid.serialize_v2())
+        r_content = (await request.ctx.db_session.execute(select(StoredContent).where(StoredContent.hash == _cid.content_hash_b58))).scalars().first()
     else:
-        r_content = StoredContent.from_cid(request.ctx.db_session, request.json['content_address'])
+        from app.core.content.content_id import ContentId
+        _cid = ContentId.deserialize(request.json['content_address'])
+        r_content = (await request.ctx.db_session.execute(select(StoredContent).where(StoredContent.hash == _cid.content_hash_b58))).scalars().first()
     
-    content = r_content.open_content(request.ctx.db_session)
+    async def open_content_async(session, sc: StoredContent):
+        if not sc.encrypted:
+            decrypted = sc
+            encrypted = (await session.execute(select(StoredContent).where(StoredContent.decrypted_content_id == sc.id))).scalars().first()
+        else:
+            encrypted = sc
+            decrypted = (await session.execute(select(StoredContent).where(StoredContent.id == sc.decrypted_content_id))).scalars().first()
+        assert decrypted and encrypted, "Can't open content"
+        ctype = decrypted.json_format().get('content_type', 'application/x-binary')
+        try:
+            content_type = ctype.split('/')[0]
+        except Exception:
+            content_type = 'application'
+        return {'encrypted_content': encrypted, 'decrypted_content': decrypted, 'content_type': content_type}
+    content = await open_content_async(request.ctx.db_session, r_content)
 
     licenses_cost = content['encrypted_content'].json_format()['license']
     assert request.json['license_type'] in licenses_cost

app/api/routes/_system.py

@@ -6,6 +6,7 @@ from base58 import b58encode, b58decode
 from sanic import response
 
 from app.core.models.node_storage import StoredContent
+from sqlalchemy import select
 from app.core._blockchain.ton.platform import platform
 from app.core._crypto.signer import Signer
 from app.core._secrets import hot_pubkey, service_wallet, hot_seed
@@ -19,10 +20,10 @@ def get_git_info():
 
 
 async def s_api_v1_node(request):  # /api/v1/node
-    last_known_index = request.ctx.db_session.query(StoredContent).filter(
+    last_known_index_obj = (await request.ctx.db_session.execute(
-        StoredContent.onchain_index != None
+        select(StoredContent).where(StoredContent.onchain_index != None).order_by(StoredContent.onchain_index.desc())
-    ).order_by(StoredContent.onchain_index.desc()).first()
+    )).scalars().first()
-    last_known_index = last_known_index.onchain_index if last_known_index else 0
+    last_known_index = last_known_index_obj.onchain_index if last_known_index_obj else 0
     last_known_index = max(last_known_index, 0)
     return response.json({
         'id': b58encode(hot_pubkey).decode(),
@@ -39,10 +40,10 @@ async def s_api_v1_node(request):  # /api/v1/node
     })
 
 async def s_api_v1_node_friendly(request):
-    last_known_index = request.ctx.db_session.query(StoredContent).filter(
+    last_known_index_obj = (await request.ctx.db_session.execute(
-        StoredContent.onchain_index != None
+        select(StoredContent).where(StoredContent.onchain_index != None).order_by(StoredContent.onchain_index.desc())
-    ).order_by(StoredContent.onchain_index.desc()).first()
+    )).scalars().first()
-    last_known_index = last_known_index.onchain_index if last_known_index else 0
+    last_known_index = last_known_index_obj.onchain_index if last_known_index_obj else 0
     last_known_index = max(last_known_index, 0)
     response_plain_text = f"""
     Node address: {service_wallet.address.to_string(1, 1, 1)}

app/api/routes/auth.py

@@ -37,7 +37,9 @@ async def s_api_v1_auth_twa(request):
         make_log("auth", "Invalid TWA data", level="warning")
         return response.json({"error": "Invalid TWA data"}, status=401)
 
-    known_user = request.ctx.db_session.query(User).filter(User.telegram_id == twa_data.user.id).first()
+    known_user = (await request.ctx.db_session.execute(
+        select(User).where(User.telegram_id == twa_data.user.id)
+    )).scalars().first()
     if not known_user:
         new_user = User(
             telegram_id=twa_data.user.id,
@@ -52,9 +54,11 @@ async def s_api_v1_auth_twa(request):
             created=datetime.now()
         )
         request.ctx.db_session.add(new_user)
-        request.ctx.db_session.commit()
+        await request.ctx.db_session.commit()
 
-        known_user = request.ctx.db_session.query(User).filter(User.telegram_id == twa_data.user.id).first()
+        known_user = (await request.ctx.db_session.execute(
+            select(User).where(User.telegram_id == twa_data.user.id)
+        )).scalars().first()
         assert known_user, "User not created"
 
     new_user_key = await known_user.create_api_token_v1(request.ctx.db_session, "USER_API_V1")
@@ -65,12 +69,12 @@ async def s_api_v1_auth_twa(request):
             wallet_info.account = Account.from_dict(auth_data['ton_proof']['account'])
             wallet_info.ton_proof = TonProof.from_dict({'proof': auth_data['ton_proof']['ton_proof']})
             connection_payload = auth_data['ton_proof']['ton_proof']['payload']
-            known_payload = (request.ctx.db_session.execute(select(KnownKey).where(KnownKey.seed == connection_payload))).scalars().first()
+            known_payload = (await request.ctx.db_session.execute(select(KnownKey).where(KnownKey.seed == connection_payload))).scalars().first()
             assert known_payload, "Unknown payload"
             assert known_payload.meta['I_user_id'] == known_user.id, "Invalid user_id"
             assert wallet_info.check_proof(connection_payload), "Invalid proof"
 
-            for known_connection in (request.ctx.db_session.execute(select(WalletConnection).where(
+            for known_connection in (await request.ctx.db_session.execute(select(WalletConnection).where(
                     and_(
                         WalletConnection.user_id == known_user.id,
                         WalletConnection.network == 'ton'
@@ -78,7 +82,7 @@ async def s_api_v1_auth_twa(request):
             ))).scalars().all():
                 known_connection.invalidated = True
 
-            for other_connection in (request.ctx.db_session.execute(select(WalletConnection).where(
+            for other_connection in (await request.ctx.db_session.execute(select(WalletConnection).where(
                     WalletConnection.wallet_address == Address(wallet_info.account.address).to_string(1, 1, 1)
             ))).scalars().all():
                 other_connection.invalidated = True
@@ -99,12 +103,12 @@ async def s_api_v1_auth_twa(request):
                 without_pk=False
             )
             request.ctx.db_session.add(new_connection)
-            request.ctx.db_session.commit()
+            await request.ctx.db_session.commit()
         except BaseException as e:
             make_log("auth", f"Invalid ton_proof: {e}", level="warning")
             return response.json({"error": "Invalid ton_proof"}, status=400)
 
-    ton_connection = (request.ctx.db_session.execute(select(WalletConnection).where(
+    ton_connection = (await request.ctx.db_session.execute(select(WalletConnection).where(
         and_(
             WalletConnection.user_id == known_user.id,
             WalletConnection.network == 'ton',
@@ -112,7 +116,7 @@ async def s_api_v1_auth_twa(request):
         )
     ).order_by(WalletConnection.created.desc()))).scalars().first()
     known_user.last_use = datetime.now()
-    request.ctx.db_session.commit()
+    await request.ctx.db_session.commit()
 
     return response.json({
         'user': known_user.json_format(),
@@ -124,7 +128,7 @@ async def s_api_v1_auth_me(request):
     if not request.ctx.user:
         return response.json({"error": "Unauthorized"}, status=401)
 
-    ton_connection = (request.ctx.db_session.execute(
+    ton_connection = (await request.ctx.db_session.execute(
         select(WalletConnection).where(
             and_(
                 WalletConnection.user_id == request.ctx.user.id,
@@ -132,7 +136,7 @@ async def s_api_v1_auth_me(request):
                 WalletConnection.invalidated == False
             )
         ).order_by(WalletConnection.created.desc())
-    )).scalars().first()
+    ))).scalars().first()
 
     return response.json({
         'user': request.ctx.user.json_format(),
@@ -159,10 +163,12 @@ async def s_api_v1_auth_select_wallet(request):
     user = request.ctx.user
 
     # Check if a WalletConnection already exists for this user with the given canonical wallet address
-    existing_connection = db_session.query(WalletConnection).filter(
+    existing_connection = (await db_session.execute(select(WalletConnection).where(
+        and_(
             WalletConnection.user_id == user.id,
             WalletConnection.wallet_address == canonical_address
-    ).first()
+        )
+    ))).scalars().first()
 
     if not existing_connection:
         return response.json({"error": "Wallet connection not found"}, status=404)
@@ -185,6 +191,6 @@ async def s_api_v1_auth_select_wallet(request):
         without_pk=False
     )
     db_session.add(new_connection)
-    db_session.commit()
+    await db_session.commit()
 
     return response.empty(status=200)

app/api/routes/content.py

@@ -1,5 +1,6 @@
 from datetime import datetime, timedelta
 from sanic import response
+from sqlalchemy import select, and_, func
 from aiogram import Bot, types
 from sqlalchemy import and_
 from app.core.logger import make_log
@@ -22,13 +23,20 @@ async def s_api_v1_content_list(request):
     store = request.args.get('store', 'local')
     assert store in ('local', 'onchain'), "Invalid store"
 
-    content_list = request.ctx.db_session.query(StoredContent).filter(
+    stmt = (
+        select(StoredContent)
+        .where(
             StoredContent.type.like(store + '%'),
             StoredContent.disabled == False
-    ).order_by(StoredContent.created.desc()).offset(offset).limit(limit)
+        )
-    make_log("Content", f"Listed {content_list.count()} contents", level='info')
+        .order_by(StoredContent.created.desc())
+        .offset(offset)
+        .limit(limit)
+    )
+    rows = (await request.ctx.db_session.execute(stmt)).scalars().all()
+    make_log("Content", f"Listed {len(rows)} contents", level='info')
     result = {}
-    for content in content_list.all():
+    for content in rows:
         content_json = content.json_format()
         result[content_json["cid"]] = content_json
 
@@ -38,23 +46,41 @@ async def s_api_v1_content_list(request):
 async def s_api_v1_content_view(request, content_address: str):
     # content_address can be CID or TON address
 
-    license_exist = request.ctx.db_session.query(UserContent).filter_by(
+    license_exist = (await request.ctx.db_session.execute(
-        onchain_address=content_address,
+        select(UserContent).where(UserContent.onchain_address == content_address)
-    ).first()
+    )).scalars().first()
     if license_exist:
         content_address = license_exist.content.cid.serialize_v2()
 
-    r_content = StoredContent.from_cid(request.ctx.db_session, content_address)
+    from app.core.content.content_id import ContentId
-    content = r_content.open_content(request.ctx.db_session)
+    cid = ContentId.deserialize(content_address)
+    r_content = (await request.ctx.db_session.execute(
+        select(StoredContent).where(StoredContent.hash == cid.content_hash_b58)
+    )).scalars().first()
+    async def open_content_async(session, sc: StoredContent):
+        if not sc.encrypted:
+            decrypted = sc
+            encrypted = (await session.execute(select(StoredContent).where(StoredContent.decrypted_content_id == sc.id))).scalars().first()
+        else:
+            encrypted = sc
+            decrypted = (await session.execute(select(StoredContent).where(StoredContent.id == sc.decrypted_content_id))).scalars().first()
+        assert decrypted and encrypted, "Can't open content"
+        ctype = decrypted.json_format().get('content_type', 'application/x-binary')
+        try:
+            content_type = ctype.split('/')[0]
+        except Exception:
+            content_type = 'application'
+        return {'encrypted_content': encrypted, 'decrypted_content': decrypted, 'content_type': content_type}
+    content = await open_content_async(request.ctx.db_session, r_content)
 
     opts = {
         'content_type': content['content_type'],  # возможно с ошибками, нужно переделать на ffprobe
         'content_address': content['encrypted_content'].meta.get('item_address', '')
     }
     if content['encrypted_content'].key_id:
-        known_key = request.ctx.db_session.query(KnownKey).filter(
+        known_key = (await request.ctx.db_session.execute(
-            KnownKey.id == content['encrypted_content'].key_id
+            select(KnownKey).where(KnownKey.id == content['encrypted_content'].key_id)
-        ).first()
+        )).scalars().first()
         if known_key:
             opts['key_hash'] = known_key.seed_hash  # нахер не нужно на данный момент
 
@@ -64,22 +90,23 @@ async def s_api_v1_content_view(request, content_address: str):
 
     have_access = False
     if request.ctx.user:
-        user_wallet_address = request.ctx.user.wallet_address(request.ctx.db_session)
+        user_wallet_address = await request.ctx.user.wallet_address_async(request.ctx.db_session)
         have_access = (
                 (content['encrypted_content'].owner_address == user_wallet_address)
-                or bool(request.ctx.db_session.query(UserContent).filter_by(owner_address=user_wallet_address, status='active',
+                or bool((await request.ctx.db_session.execute(select(UserContent).where(
-                                                                     content_id=content['encrypted_content'].id).first()) \
+                    and_(UserContent.owner_address == user_wallet_address, UserContent.status == 'active', UserContent.content_id == content['encrypted_content'].id)
-                or bool(request.ctx.db_session.query(StarsInvoice).filter(
+                ))).scalars().first()) \
+                or bool((await request.ctx.db_session.execute(select(StarsInvoice).where(
                     and_(
                         StarsInvoice.user_id == request.ctx.user.id,
                         StarsInvoice.content_hash == content['encrypted_content'].hash,
                         StarsInvoice.paid == True
                     )
-                ).first())
+                ))).scalars().first())
         )
 
         if not have_access:
-            current_star_rate = ServiceConfig(request.ctx.db_session).get('live_tonPerStar', [0, 0])[0]
+            current_star_rate = (await ServiceConfig(request.ctx.db_session).get('live_tonPerStar', [0, 0]))[0]
             if current_star_rate < 0:
                 current_star_rate = 0.00000001
 
@@ -88,14 +115,14 @@ async def s_api_v1_content_view(request, content_address: str):
                 stars_cost = 2
 
             invoice_id = f"access_{uuid.uuid4().hex}"
-            exist_invoice = request.ctx.db_session.query(StarsInvoice).filter(
+            exist_invoice = (await request.ctx.db_session.execute(select(StarsInvoice).where(
                 and_(
                     StarsInvoice.user_id == request.ctx.user.id,
                     StarsInvoice.created > datetime.now() - timedelta(minutes=25),
                     StarsInvoice.amount == stars_cost,
                     StarsInvoice.content_hash == content['encrypted_content'].hash,
                 )
-            ).first()
+            ))).scalars().first()
             if exist_invoice:
                 invoice_url = exist_invoice.invoice_url
             else:
@@ -119,7 +146,7 @@ async def s_api_v1_content_view(request, content_address: str):
                             invoice_url=invoice_url
                         )
                     )
-                    request.ctx.db_session.commit()
+                    await request.ctx.db_session.commit()
                 except BaseException as e:
                     make_log("Content", f"Can't create invoice link: {e}", level='warning')
 
@@ -142,15 +169,20 @@ async def s_api_v1_content_view(request, content_address: str):
         if have_access:
             user_content_option = 'low'  # TODO: подключать high если человек внезапно меломан
 
-        converted_content = request.ctx.db_session.query(StoredContent).filter(
+        converted_content = (await request.ctx.db_session.execute(select(StoredContent).where(
             StoredContent.hash == converted_content[user_content_option]
-        ).first()
+        ))).scalars().first()
         if converted_content:
             display_options['content_url'] = converted_content.web_url
             opts['content_ext'] = converted_content.filename.split('.')[-1]
 
     content_meta = content['encrypted_content'].json_format()
-    content_metadata = StoredContent.from_cid(request.ctx.db_session, content_meta.get('metadata_cid') or None)
+    from app.core.content.content_id import ContentId
+    _mcid = content_meta.get('metadata_cid') or None
+    content_metadata = None
+    if _mcid:
+        _cid = ContentId.deserialize(_mcid)
+        content_metadata = (await request.ctx.db_session.execute(select(StoredContent).where(StoredContent.hash == _cid.content_hash_b58))).scalars().first()
     with open(content_metadata.filepath, 'r') as f:
         content_metadata_json = json.loads(f.read())
 
@@ -187,14 +219,17 @@ async def s_api_v1_content_friendly_list(request):
                     </tr>
                 </thead>
 """
-    for content in request.ctx.db_session.query(StoredContent).filter(
+    contents = (await request.ctx.db_session.execute(select(StoredContent).where(
         StoredContent.type == 'onchain/content'
-    ).all():
+    ))).scalars().all()
+    for content in contents:
         if not content.meta.get('metadata_cid'):
             make_log("Content", f"Content {content.cid.serialize_v2()} has no metadata", level='warning')
             continue
 
-        metadata_content = StoredContent.from_cid(request.ctx.db_session, content.meta.get('metadata_cid'))
+        from app.core.content.content_id import ContentId
+        _cid = ContentId.deserialize(content.meta.get('metadata_cid'))
+        metadata_content = (await request.ctx.db_session.execute(select(StoredContent).where(StoredContent.hash == _cid.content_hash_b58))).scalars().first()
         with open(metadata_content.filepath, 'r') as f:
             metadata = json.loads(f.read())
         
@@ -228,10 +263,12 @@ async def s_api_v1_5_content_list(request):
         return response.json({'error': 'Invalid limit'}, status=400)
 
     # Query onchain contents which are not disabled
-    contents = request.ctx.db_session.query(StoredContent).filter(
+    contents = (await request.ctx.db_session.execute(
-        StoredContent.type == 'onchain/content',
+        select(StoredContent)
-        StoredContent.disabled == False
+        .where(StoredContent.type == 'onchain/content', StoredContent.disabled == False)
-    ).order_by(StoredContent.created.desc()).offset(offset).limit(limit).all()
+        .order_by(StoredContent.created.desc())
+        .offset(offset).limit(limit)
+    )).scalars().all()
 
     result = []
     for content in contents:
@@ -240,7 +277,9 @@ async def s_api_v1_5_content_list(request):
         if not metadata_cid:
             continue  # Skip if no metadata_cid is found
 
-        metadata_content = StoredContent.from_cid(request.ctx.db_session, metadata_cid)
+        from app.core.content.content_id import ContentId
+        _cid = ContentId.deserialize(metadata_cid)
+        metadata_content = (await request.ctx.db_session.execute(select(StoredContent).where(StoredContent.hash == _cid.content_hash_b58))).scalars().first()
         try:
             with open(metadata_content.filepath, 'r') as f:
                 metadata = json.load(f)
@@ -256,9 +295,9 @@ async def s_api_v1_5_content_list(request):
         preview_link = None
         converted_content = content.meta.get('converted_content')
         if converted_content:
-            converted_content = request.ctx.db_session.query(StoredContent).filter(
+            converted_content = (await request.ctx.db_session.execute(select(StoredContent).where(
                 StoredContent.hash == converted_content['low_preview']
-            ).first()
+            ))).scalars().first()
             preview_link = converted_content.web_url
             if converted_content.filename.split('.')[-1] in ('mp4', 'mov'):
                 media_type = 'video'

app/api/routes/node_storage.py

@@ -11,6 +11,7 @@ from sanic import response
 import json
 
 from app.core._config import UPLOADS_DIR
+from sqlalchemy import select
 from app.core._utils.resolve_content import resolve_content
 from app.core.logger import make_log
 from app.core.models.node_storage import StoredContent
@@ -52,7 +53,9 @@ async def s_api_v1_storage_post(request):
     try:
         file_hash_bin = hashlib.sha256(file_content).digest()
         file_hash = b58encode(file_hash_bin).decode()
-        stored_content = request.ctx.db_session.query(StoredContent).filter(StoredContent.hash == file_hash).first()
+        stored_content = (await request.ctx.db_session.execute(
+            select(StoredContent).where(StoredContent.hash == file_hash)
+        )).scalars().first()
         if stored_content:
             stored_cid = stored_content.cid.serialize_v1()
             stored_cid_v2 = stored_content.cid.serialize_v2()
@@ -80,7 +83,7 @@ async def s_api_v1_storage_post(request):
             key_id=None,
         )
         request.ctx.db_session.add(new_content)
-        request.ctx.db_session.commit()
+        await request.ctx.db_session.commit()
 
         file_path = os.path.join(UPLOADS_DIR, file_hash)
         async with aiofiles.open(file_path, "wb") as file:
@@ -112,7 +115,9 @@ async def s_api_v1_storage_get(request, file_hash=None):
         return response.json({"error": errmsg}, status=400)
 
     content_sha256 = b58encode(cid.content_hash).decode()
-    content = request.ctx.db_session.query(StoredContent).filter(StoredContent.hash == content_sha256).first()
+    content = (await request.ctx.db_session.execute(
+        select(StoredContent).where(StoredContent.hash == content_sha256)
+    )).scalars().first()
     if not content:
         return response.json({"error": "File not found"}, status=404)
 
@@ -139,7 +144,16 @@ async def s_api_v1_storage_get(request, file_hash=None):
             tempfile_path += "_mpeg" + (f"_{seconds_limit}" if seconds_limit else "")
             if not os.path.exists(tempfile_path):
                 try:
-                    cover_content = StoredContent.from_cid(content.meta.get('cover_cid'))
+                    # Resolve cover content by CID (async)
+                    from app.core.content.content_id import ContentId
+                    try:
+                        _cid = ContentId.deserialize(content.meta.get('cover_cid'))
+                        _cover_hash = _cid.content_hash_b58
+                        cover_content = (await request.ctx.db_session.execute(
+                            select(StoredContent).where(StoredContent.hash == _cover_hash)
+                        )).scalars().first()
+                    except Exception:
+                        cover_content = None
                     cover_tempfile_path = os.path.join(UPLOADS_DIR, f"tmp_{cover_content.hash}_jpeg")
                     if not os.path.exists(cover_tempfile_path):
                         cover_image = Image.open(cover_content.filepath)

app/api/routes/progressive_storage.py

@@ -11,6 +11,7 @@ from base58 import b58encode
 from sanic import response
 
 from app.core.logger import make_log
+from sqlalchemy import select
 from app.core.models.node_storage import StoredContent
 from app.core._config import UPLOADS_DIR
 from app.core._utils.resolve_content import resolve_content
@@ -130,7 +131,7 @@ async def s_api_v1_5_storage_post(request):
             return response.json({"error": "Failed to finalize file storage"}, status=500)
         
         db_session = request.ctx.db_session
-        existing = db_session.query(StoredContent).filter_by(hash=computed_hash_b58).first()
+        existing = (await db_session.execute(select(StoredContent).where(StoredContent.hash == computed_hash_b58))).scalars().first()
         if existing:
             make_log("uploader_v1.5", f"File with hash {computed_hash_b58} already exists in DB", level="INFO")
             serialized_v2 = existing.cid.serialize_v2()
@@ -156,7 +157,7 @@ async def s_api_v1_5_storage_post(request):
                 created=datetime.utcnow()
             )
             db_session.add(new_content)
-            db_session.commit()
+            await db_session.commit()
             make_log("uploader_v1.5", f"New file stored and indexed for user {user_id} with hash {computed_hash_b58}", level="INFO")
         except Exception as e:
             make_log("uploader_v1.5", f"Database error: {e}", level="ERROR")
@@ -191,7 +192,7 @@ async def s_api_v1_5_storage_get(request, file_hash):
         return response.json({"error": "File not found"}, status=404)
 
     db_session = request.ctx.db_session
-    stored = db_session.query(StoredContent).filter_by(hash=file_hash).first()
+    stored = (await db_session.execute(select(StoredContent).where(StoredContent.hash == file_hash))).scalars().first()
     if stored and stored.filename:
         filename_for_mime = stored.filename
     else:

app/api/routes/tonconnect.py

@@ -4,6 +4,7 @@ from aiogram.utils.web_app import safe_parse_webapp_init_data
 from sanic import response
 
 from app.core._blockchain.ton.connect import TonConnect, unpack_wallet_info, WalletConnection
+from sqlalchemy import select, and_
 from app.core._config import TELEGRAM_API_KEY
 from app.core.models.user import User
 from app.core.logger import make_log
@@ -23,8 +24,19 @@ async def s_api_v1_tonconnect_new(request):
     db_session = request.ctx.db_session
     user = request.ctx.user
     memory = request.ctx.memory
-    ton_connect, ton_connection = TonConnect.by_user(db_session, user)
+    # Try restore last connection from DB
+    ton_connection = (await db_session.execute(select(WalletConnection).where(
+        and_(
+            WalletConnection.user_id == user.id,
+            WalletConnection.invalidated == False,
+            WalletConnection.network == 'ton'
+        )
+    ).order_by(WalletConnection.created.desc()))).scalars().first()
+    if ton_connection:
+        ton_connect = TonConnect.by_key(ton_connection.keys["connection_key"])
         await ton_connect.restore_connection()
+    else:
+        ton_connect = TonConnect()
     make_log("TonConnect_API", f"SDK connected?: {ton_connect.connected}", level='info')
     if ton_connect.connected:
         return response.json({"error": "Already connected"}, status=400)
@@ -47,13 +59,11 @@ async def s_api_v1_tonconnect_logout(request):
     user = request.ctx.user
     memory = request.ctx.memory
 
-    wallet_connections = db_session.query(WalletConnection).filter(
+    result = await db_session.execute(select(WalletConnection).where(
-        WalletConnection.user_id == user.id,
+        and_(WalletConnection.user_id == user.id, WalletConnection.invalidated == False)
-        WalletConnection.invalidated == False
+    ))
-    ).all()
+    wallet_connections = result.scalars().all()
     for wallet_connection in wallet_connections:
         wallet_connection.invalidated = True
-
+    await db_session.commit()
-    db_session.commit()
     return response.json({"success": True})
-

app/bot/middleware.py

@@ -1,6 +1,7 @@
 from app.core.logger import make_log, logger
 from app.core.models._telegram import Wrapped_CBotChat
 from app.core.models.user import User
+from sqlalchemy import select
 from app.core.storage import db_session
 from aiogram import BaseMiddleware, types
 from app.core.models.messages import KnownTelegramMessage
@@ -21,9 +22,9 @@ class UserDataMiddleware(BaseMiddleware):
 
         # TODO: maybe make users cache
 
-        with db_session(auto_commit=False) as session:
+        async with db_session(auto_commit=False) as session:
             try:
-                user = session.query(User).filter_by(telegram_id=user_id).first()
+                user = (await session.execute(select(User).where(User.telegram_id == user_id))).scalars().first()
             except BaseException as e:
                 logger.error(f"Error when middleware getting user: {e}")
                 user = None
@@ -42,7 +43,7 @@ class UserDataMiddleware(BaseMiddleware):
                     created=datetime.now()
                 )
                 session.add(user)
-                session.commit()
+                await session.commit()
             else:
                 if user.username != update_body.from_user.username:
                     user.username = update_body.from_user.username
@@ -60,7 +61,7 @@ class UserDataMiddleware(BaseMiddleware):
                 }
 
                 user.last_use = datetime.now()
-                session.commit()
+                await session.commit()
 
             data['user'] = user
             data['db_session'] = session
@@ -72,11 +73,11 @@ class UserDataMiddleware(BaseMiddleware):
                 if update_body.text.startswith('/start'):
                     message_type = 'start_command'
 
-                if session.query(KnownTelegramMessage).filter_by(
+                if (await session.execute(select(KnownTelegramMessage).where(
-                    chat_id=update_body.chat.id,
+                    (KnownTelegramMessage.chat_id == update_body.chat.id) &
-                    message_id=update_body.message_id,
+                    (KnownTelegramMessage.message_id == update_body.message_id) &
-                    from_user=True
+                    (KnownTelegramMessage.from_user == True)
-                ).first():
+                ))).scalars().first():
                     make_log("UserDataMiddleware", f"Message {update_body.message_id} already processed", level='debug')
                     return
 
@@ -91,7 +92,7 @@ class UserDataMiddleware(BaseMiddleware):
                     meta={}
                 )
                 session.add(new_message)
-                session.commit()
+                await session.commit()
 
             result = await handler(event, data)
             return result

app/bot/routers/content.py

@@ -6,6 +6,7 @@ from app.core._keyboards import get_inline_keyboard
 from app.core._utils.tg_process_template import tg_process_template
 from app.core.logger import make_log
 from app.core.models.node_storage import StoredContent
+from sqlalchemy import select, and_
 import json
 
 router = Router()
@@ -20,12 +21,13 @@ def chunks(lst, n):
 async def t_callback_owned_content(query: types.CallbackQuery, memory=None, user=None, db_session=None, chat_wrap=None, **extra):
     message_text = user.translated("ownedContent_menu")
     content_list = []
-    for content in db_session.query(StoredContent).filter_by(
+    user_addr = await user.wallet_address_async(db_session)
-        owner_address=user.wallet_address(db_session),
+    result = await db_session.execute(select(StoredContent).where(
-        type='onchain/content'
+        and_(StoredContent.owner_address == user_addr, StoredContent.type == 'onchain/content')
-    ).all():
+    ))
+    for content in result.scalars().all():
         try:
-            metadata_content = StoredContent.from_cid(db_session, content.json_format()['metadata_cid'])
+            metadata_content = await StoredContent.from_cid_async(db_session, content.json_format()['metadata_cid'])
             with open(metadata_content.filepath, 'r') as f:
                 metadata_content_json = json.loads(f.read())
         except BaseException as e:
@@ -59,10 +61,9 @@ async def t_callback_owned_content(query: types.CallbackQuery, memory=None, user
 
 async def t_callback_node_content(query: types.CallbackQuery, memory=None, user=None, db_session=None, chat_wrap=None, **extra):
     content_oid = int(query.data.split('_')[1])
+    row = (await db_session.execute(select(StoredContent).where(StoredContent.id == content_oid))).scalars().first()
     return await chat_wrap.send_content(
-        db_session, db_session.query(StoredContent).filter_by(
+        db_session, row,
-            id=content_oid
-        ).first(),
         extra_buttons=[
             [{
                 'text': user.translated('back_button'),

app/bot/routers/home.py

@@ -3,6 +3,7 @@ from aiogram.filters import Command
 from tonsdk.utils import Address
 
 from app.core._blockchain.ton.connect import TonConnect
+from sqlalchemy import select, and_
 from app.core._keyboards import get_inline_keyboard
 from app.core._utils.tg_process_template import tg_process_template
 from app.core.models.wallet_connection import WalletConnection
@@ -32,7 +33,13 @@ async def send_home_menu(chat_wrap, user, wallet_connection, **kwargs):
 
 
 async def send_connect_wallets_list(db_session, chat_wrap, user, **kwargs):
-    ton_connect, ton_connection = TonConnect.by_user(db_session, user, callback_fn=())
+    # Try to restore existing connection via DB
+    result = await db_session.execute(select(WalletConnection).where(
+        and_(WalletConnection.user_id == user.id, WalletConnection.invalidated == False, WalletConnection.network == 'ton')
+    ).order_by(WalletConnection.created.desc()))
+    ton_connection = result.scalars().first()
+    ton_connect = TonConnect.by_key(ton_connection.keys["connection_key"]) if ton_connection else TonConnect()
+    if ton_connection:
         await ton_connect.restore_connection()
     wallets = ton_connect._sdk_client.get_wallets()
     message_text = user.translated("connectWalletsList_menu")
@@ -66,10 +73,9 @@ async def t_home_menu(__msg, **extra):
     else:
         message_id = None
 
-    wallet_connection = db_session.query(WalletConnection).filter(
+    wallet_connection = (await db_session.execute(select(WalletConnection).where(
-        WalletConnection.user_id == user.id,
+        and_(WalletConnection.user_id == user.id, WalletConnection.invalidated == False)
-        WalletConnection.invalidated == False
+    ))).scalars().first()
-    ).first()
 
     # if not wallet_connection:
     #     return await send_connect_wallets_list(db_session, chat_wrap, user, message_id=message_id)

app/bot/routers/tonconnect.py

@@ -7,6 +7,7 @@ from aiogram.filters import Command
 
 from app.bot.routers.home import send_connect_wallets_list, send_home_menu
 from app.core._blockchain.ton.connect import TonConnect, unpack_wallet_info
+from sqlalchemy import select, and_
 from app.core._keyboards import get_inline_keyboard
 from app.core._utils.tg_process_template import tg_process_template
 from app.core.logger import make_log
@@ -33,15 +34,21 @@ async def t_tonconnect_dev_menu(message: types.Message, memory=None, user=None,
 
     keyboard = []
 
-    ton_connect, ton_connection = TonConnect.by_user(db_session, user, callback_fn=())
+    # Restore recent connection
+    result = await db_session.execute(select(WalletConnection).where(
+        and_(WalletConnection.user_id == user.id, WalletConnection.invalidated == False, WalletConnection.network == 'ton')
+    ).order_by(WalletConnection.created.desc()))
+    ton_connection = result.scalars().first()
+    ton_connect = TonConnect.by_key(ton_connection.keys["connection_key"]) if ton_connection else TonConnect()
     make_log("TonConnect_DevMenu", f"Available wallets: {ton_connect._sdk_client.get_wallets()}", level='debug')
+    if ton_connection:
         await ton_connect.restore_connection()
     make_log("TonConnect_DevMenu", f"SDK connected?: {ton_connect.connected}", level='info')
     if not ton_connect.connected:
         if ton_connection:
             make_log("TonConnect_DevMenu", f"Invalidating old connection", level='debug')
             ton_connection.invalidated = True
-            db_session.commit()
+            await db_session.commit()
 
         message_text = f"""<b>Wallet is not connected</b>
         
@@ -71,7 +78,12 @@ Use /dev_tonconnect <code>{wallet_app_name}</code> for connect to wallet."""
 
 async def t_callback_init_tonconnect(query: types.CallbackQuery, memory=None, user=None, db_session=None, chat_wrap=None, **extra):
     wallet_app_name = query.data.split("_")[1]
-    ton_connect, ton_connection = TonConnect.by_user(db_session, user)
+    result = await db_session.execute(select(WalletConnection).where(
+        and_(WalletConnection.user_id == user.id, WalletConnection.invalidated == False, WalletConnection.network == 'ton')
+    ).order_by(WalletConnection.created.desc()))
+    ton_connection = result.scalars().first()
+    ton_connect = TonConnect.by_key(ton_connection.keys["connection_key"]) if ton_connection else TonConnect()
+    if ton_connection:
         await ton_connect.restore_connection()
     connection_link = await ton_connect.new_connection(wallet_app_name)
     ton_connect.connected
@@ -98,10 +110,9 @@ async def t_callback_init_tonconnect(query: types.CallbackQuery, memory=None, us
 
     start_ts = datetime.now()
     while datetime.now() - start_ts < timedelta(seconds=180):
-        new_connection = db_session.query(WalletConnection).filter(
+        new_connection = (await db_session.execute(select(WalletConnection).where(
-            WalletConnection.user_id == user.id,
+            and_(WalletConnection.user_id == user.id, WalletConnection.invalidated == False)
-            WalletConnection.invalidated == False
+        ))).scalars().first()
-        ).first()
         if new_connection:
             await tg_process_template(
                 chat_wrap, user.translated('p_successConnectWallet')
@@ -115,14 +126,13 @@ async def t_callback_init_tonconnect(query: types.CallbackQuery, memory=None, us
 
 
 async def t_callback_disconnect_wallet(query: types.CallbackQuery, memory=None, user=None, db_session=None, chat_wrap=None, **extra):
-    wallet_connections = db_session.query(WalletConnection).filter(
+    wallet_connections = (await db_session.execute(select(WalletConnection).where(
-        WalletConnection.user_id == user.id,
+        and_(WalletConnection.user_id == user.id, WalletConnection.invalidated == False)
-        WalletConnection.invalidated == False
+    ))).scalars().all()
-    ).all()
     for wallet_connection in wallet_connections:
         wallet_connection.invalidated = True
 
-    db_session.commit()
+    await db_session.commit()
 
     return await send_home_menu(chat_wrap, user, None, message_id=query.message.message_id)
 

app/client_bot/routers/content.py

@@ -6,6 +6,7 @@ from aiogram import types, Router, F
 
 from app.core._keyboards import get_inline_keyboard
 from app.core.models.node_storage import StoredContent
+from sqlalchemy import select, and_
 import json
 from app.core.logger import make_log
 from app.core.models.content.user_content import UserAction, UserContent
@@ -30,7 +31,7 @@ CACHE_CHAT_ID = -1002390124789
 async def t_callback_purchase_node_content(query: types.CallbackQuery, memory=None, user=None, db_session=None, chat_wrap=None, **extra):
     content_oid = int(query.data.split('_')[1])
     is_cancel_request = query.data.split('_')[2] == 'cancel' if len(query.data.split('_')) > 2 else False
-    content = db_session.query(StoredContent).filter_by(id=content_oid).first()
+    content = (await db_session.execute(select(StoredContent).where(StoredContent.id == content_oid))).scalars().first()
     if not content:
         return await query.answer(user.translated('error_contentNotFound'), show_alert=True)
 
@@ -43,11 +44,16 @@ async def t_callback_purchase_node_content(query: types.CallbackQuery, memory=No
 
         make_log("Purchase", f"User {user.id} initiated purchase for content ID {content_oid}. License price: {license_price_num}.", level='info')
 
-        ton_connect, ton_connection = TonConnect.by_user(db_session, user, callback_fn=())
+        result = await db_session.execute(select(WalletConnection).where(
+            and_(WalletConnection.user_id == user.id, WalletConnection.invalidated == False, WalletConnection.network == 'ton')
+        ).order_by(WalletConnection.created.desc()))
+        ton_connection = result.scalars().first()
+        ton_connect = TonConnect.by_key(ton_connection.keys["connection_key"]) if ton_connection else TonConnect()
+        if ton_connection:
             await ton_connect.restore_connection()
         assert ton_connect.connected, "No connected wallet"
 
-        user_wallet_address = user.wallet_address(db_session)
+        user_wallet_address = await user.wallet_address_async(db_session)
 
         memory._app.add_task(ton_connect._sdk_client.send_transaction({
             'valid_until': int(datetime.now().timestamp() + 300),
@@ -76,18 +82,15 @@ async def t_callback_purchase_node_content(query: types.CallbackQuery, memory=No
     else:
         # Logging cancellation attempt with detailed information
         make_log("Purchase", f"User {user.id} cancelled purchase for content ID {content_oid}.", level='info')
-        action = db_session.query(UserAction).filter_by(
+        action = (await db_session.execute(select(UserAction).where(
-            type='purchase',
+            and_(UserAction.type == 'purchase', UserAction.content_id == content_oid, UserAction.user_id == user.id, UserAction.status == 'requested')
-            content_id=content_oid,
+        ))).scalars().first()
-            user_id=user.id,
-            status='requested'
-        ).first()
         if not action:
             return await query.answer()
 
         action.status = 'canceled'
 
-    db_session.commit()
+    await db_session.commit()
     await chat_wrap.send_content(db_session, content, message_id=query.message.message_id)
 
 
@@ -104,9 +107,7 @@ async def t_inline_query_node_content(query: types.InlineQuery, memory=None, use
         args = None
         if source_args_ext.startswith('Q'):
             license_onchain_address = source_args_ext[1:]
-            licensed_content = db_session.query(UserContent).filter_by(
+            licensed_content = (await db_session.execute(select(UserContent).where(UserContent.onchain_address == license_onchain_address))).scalars().first().content
-                onchain_address=license_onchain_address,
-            ).first().content
             make_log("InlineSearch", f"Query '{query.query}' is a license query for content ID {licensed_content.id}.", level='info')
             args = licensed_content.cid.serialize_v2()
         else:
@@ -118,15 +119,15 @@ async def t_inline_query_node_content(query: types.InlineQuery, memory=None, use
         content_list = []
         search_query = {'hash': cid.content_hash_b58}
         make_log("InlineSearch", f"Searching with query '{search_query}'.", level='info')
-        content = db_session.query(StoredContent).filter_by(**search_query).first()
+        content = (await db_session.execute(select(StoredContent).where(StoredContent.hash == cid.content_hash_b58))).scalars().first()
-        content_prod = content.open_content(db_session)
+        content_prod = await content.open_content_async(db_session)
         # Get both encrypted and decrypted content objects
         encrypted_content = content_prod['encrypted_content']
         decrypted_content = content_prod['decrypted_content']
         decrypted_content_meta = decrypted_content.json_format()
 
         try:
-            metadata_content = StoredContent.from_cid(db_session, content.json_format()['metadata_cid'])
+            metadata_content = await StoredContent.from_cid_async(db_session, content.json_format()['metadata_cid'])
             with open(metadata_content.filepath, 'r') as f:
                 metadata_content_json = json.loads(f.read())
         except BaseException as e:
@@ -144,7 +145,7 @@ async def t_inline_query_node_content(query: types.InlineQuery, memory=None, use
 
         result_kwargs = {}
         try:
-            cover_content = StoredContent.from_cid(db_session, decrypted_content_meta.get('cover_cid') or None)
+            cover_content = await StoredContent.from_cid_async(db_session, decrypted_content_meta.get('cover_cid') or None)
         except BaseException as e:
             cover_content = None
 
@@ -152,9 +153,7 @@ async def t_inline_query_node_content(query: types.InlineQuery, memory=None, use
             result_kwargs['thumb_url'] = cover_content.web_url
 
         content_type_declared = decrypted_content_meta.get('content_type', 'application/x-binary').split('/')[0]
-        preview_content = db_session.query(StoredContent).filter_by(
+        preview_content = (await db_session.execute(select(StoredContent).where(StoredContent.hash == content.meta.get('converted_content', {}).get('low_preview')))).scalars().first()
-            hash=content.meta.get('converted_content', {}).get('low_preview')
-        ).first()
         content_type_declared = {
             'mp3': 'audio',
             'flac': 'audio',
@@ -196,7 +195,7 @@ async def t_inline_query_node_content(query: types.InlineQuery, memory=None, use
                         **decrypted_content.meta,
                         'telegram_file_cache_preview': preview_file_id
                     }
-                    db_session.commit()
+                    await db_session.commit()
                 except Exception as e:
                     # Logging error during preview upload with detailed content type and query information
                     make_log("InlineSearch", f"Error uploading preview for content type '{content_type_declared}' during inline query '{query.query}': {e}", level='error')

app/client_bot/routers/home.py

@@ -3,6 +3,7 @@ from aiogram.filters import Command
 from tonsdk.utils import Address
 
 from app.core._blockchain.ton.connect import TonConnect
+from sqlalchemy import select, and_
 from app.core._keyboards import get_inline_keyboard
 from app.core._utils.tg_process_template import tg_process_template
 from app.core.logger import make_log
@@ -32,7 +33,12 @@ async def send_home_menu(chat_wrap, user, wallet_connection, **kwargs):
 
 
 async def send_connect_wallets_list(db_session, chat_wrap, user, **kwargs):
-    ton_connect, ton_connection = TonConnect.by_user(db_session, user, callback_fn=())
+    result = await db_session.execute(select(WalletConnection).where(
+        and_(WalletConnection.user_id == user.id, WalletConnection.invalidated == False, WalletConnection.network == 'ton')
+    ).order_by(WalletConnection.created.desc()))
+    ton_connection = result.scalars().first()
+    ton_connect = TonConnect.by_key(ton_connection.keys["connection_key"]) if ton_connection else TonConnect()
+    if ton_connection:
         await ton_connect.restore_connection()
     wallets = ton_connect._sdk_client.get_wallets()
     message_text = user.translated("connectWalletsList_menu")
@@ -66,10 +72,9 @@ async def t_home_menu(__msg, **extra):
     else:
         message_id = None
 
-    wallet_connection = db_session.query(WalletConnection).filter(
+    wallet_connection = (await db_session.execute(select(WalletConnection).where(
-        WalletConnection.user_id == user.id,
+        and_(WalletConnection.user_id == user.id, WalletConnection.invalidated == False)
-        WalletConnection.invalidated == False
+    ))).scalars().first()
-    ).first()
 
     # if not wallet_connection:
     #     return await send_connect_wallets_list(db_session, chat_wrap, user, message_id=message_id)

app/client_bot/routers/tonconnect.py

@@ -7,6 +7,7 @@ from aiogram.filters import Command
 
 from app.client_bot.routers.home import send_connect_wallets_list, send_home_menu
 from app.core._blockchain.ton.connect import TonConnect, unpack_wallet_info
+from sqlalchemy import select, and_
 from app.core._keyboards import get_inline_keyboard
 from app.core._utils.tg_process_template import tg_process_template
 from app.core.logger import make_log
@@ -34,15 +35,20 @@ async def t_tonconnect_dev_menu(message: types.Message, memory=None, user=None,
 
     keyboard = []
 
-    ton_connect, ton_connection = TonConnect.by_user(db_session, user, callback_fn=())
+    result = await db_session.execute(select(WalletConnection).where(
+        and_(WalletConnection.user_id == user.id, WalletConnection.invalidated == False, WalletConnection.network == 'ton')
+    ).order_by(WalletConnection.created.desc()))
+    ton_connection = result.scalars().first()
+    ton_connect = TonConnect.by_key(ton_connection.keys["connection_key"]) if ton_connection else TonConnect()
     make_log("TonConnect_DevMenu", f"Available wallets: {ton_connect._sdk_client.get_wallets()}", level='debug')
+    if ton_connection:
         await ton_connect.restore_connection()
     make_log("TonConnect_DevMenu", f"SDK connected?: {ton_connect.connected}", level='info')
     if not ton_connect.connected:
         if ton_connection:
             make_log("TonConnect_DevMenu", f"Invalidating old connection", level='debug')
             ton_connection.invalidated = True
-            db_session.commit()
+            await db_session.commit()
 
         message_text = f"""<b>Wallet is not connected</b>
 
@@ -73,7 +79,12 @@ Use /dev_tonconnect <code>{wallet_app_name}</code> for connect to wallet."""
 async def t_callback_init_tonconnect(query: types.CallbackQuery, memory=None, user=None, db_session=None,
                                      chat_wrap=None, **extra):
     wallet_app_name = query.data.split("_")[1]
-    ton_connect, ton_connection = TonConnect.by_user(db_session, user)
+    result = await db_session.execute(select(WalletConnection).where(
+        and_(WalletConnection.user_id == user.id, WalletConnection.invalidated == False, WalletConnection.network == 'ton')
+    ).order_by(WalletConnection.created.desc()))
+    ton_connection = result.scalars().first()
+    ton_connect = TonConnect.by_key(ton_connection.keys["connection_key"]) if ton_connection else TonConnect()
+    if ton_connection:
         await ton_connect.restore_connection()
     connection_link = await ton_connect.new_connection(wallet_app_name)
     ton_connect.connected
@@ -100,10 +111,9 @@ async def t_callback_init_tonconnect(query: types.CallbackQuery, memory=None, us
 
     start_ts = datetime.now()
     while datetime.now() - start_ts < timedelta(seconds=180):
-        new_connection = db_session.query(WalletConnection).filter(
+        new_connection = (await db_session.execute(select(WalletConnection).where(
-            WalletConnection.user_id == user.id,
+            and_(WalletConnection.user_id == user.id, WalletConnection.invalidated == False)
-            WalletConnection.invalidated == False
+        ))).scalars().first()
-        ).first()
         if new_connection:
             await tg_process_template(
                 chat_wrap, user.translated('p_successConnectWallet')
@@ -118,14 +128,13 @@ async def t_callback_init_tonconnect(query: types.CallbackQuery, memory=None, us
 
 async def t_callback_disconnect_wallet(query: types.CallbackQuery, memory=None, user=None, db_session=None,
                                        chat_wrap=None, **extra):
-    wallet_connections = db_session.query(WalletConnection).filter(
+    wallet_connections = (await db_session.execute(select(WalletConnection).where(
-        WalletConnection.user_id == user.id,
+        and_(WalletConnection.user_id == user.id, WalletConnection.invalidated == False)
-        WalletConnection.invalidated == False
+    ))).scalars().all()
-    ).all()
     for wallet_connection in wallet_connections:
         wallet_connection.invalidated = True
 
-    db_session.commit()
+    await db_session.commit()
     return await send_home_menu(chat_wrap, user, None, message_id=query.message.message_id)
 
 

app/core/_config.py

@@ -19,9 +19,8 @@ import httpx
 TELEGRAM_BOT_USERNAME = httpx.get(f"https://api.telegram.org/bot{TELEGRAM_API_KEY}/getMe").json()['result']['username']
 CLIENT_TELEGRAM_BOT_USERNAME = httpx.get(f"https://api.telegram.org/bot{CLIENT_TELEGRAM_API_KEY}/getMe").json()['result']['username']
 
-
+# Unified database URL (PostgreSQL)
-MYSQL_URI = os.environ['MYSQL_URI']
+DATABASE_URL = os.environ['DATABASE_URL']
-MYSQL_DATABASE = os.environ['MYSQL_DATABASE']
 
 LOG_LEVEL = os.getenv('LOG_LEVEL', 'DEBUG')
 LOG_DIR = os.getenv('LOG_DIR', 'logs')

app/core/_crypto/content.py

@@ -36,9 +36,10 @@ async def create_new_encryption_key(db_session, user_id: int = None) -> KnownKey
         meta={"I_user_id": user_id} if user_id else None,
         created=datetime.now()
     )
+    from sqlalchemy import select
     db_session.add(new_key)
-    db_session.commit()
+    await db_session.commit()
-    new_key = db_session.query(KnownKey).filter(KnownKey.seed_hash == new_seed_hash).first()
+    new_key = (await db_session.execute(select(KnownKey).where(KnownKey.seed_hash == new_seed_hash))).scalars().first()
     assert new_key, "Key not created"
     return new_key
 
@@ -46,9 +47,10 @@ async def create_new_encryption_key(db_session, user_id: int = None) -> KnownKey
 async def create_encrypted_content(
     db_session, decrypted_content: StoredContent,
 ) -> StoredContent:
-    encrypted_content = db_session.query(StoredContent).filter(
+    from sqlalchemy import select
+    encrypted_content = (await db_session.execute(select(StoredContent).where(
         StoredContent.id == decrypted_content.decrypted_content_id
-    ).first()
+    ))).scalars().first()
     if encrypted_content:
         make_log("create_encrypted_content", f"(d={decrypted_content.cid.serialize_v2()}) => (e={encrypted_content.cid.serialize_v2()}): already exist (found by decrypted content)", level="debug")
         return encrypted_content
@@ -57,10 +59,8 @@ async def create_encrypted_content(
     if decrypted_content.key is None:
         key = await create_new_encryption_key(db_session, user_id=decrypted_content.user_id)
         decrypted_content.key_id = key.id
-        db_session.commit()
+        await db_session.commit()
-        decrypted_content = db_session.query(StoredContent).filter(
+        decrypted_content = (await db_session.execute(select(StoredContent).where(StoredContent.id == decrypted_content.id))).scalars().first()
-            StoredContent.id == decrypted_content.id
-        ).first()
         assert decrypted_content.key_id, "Key not assigned"
 
     decrypted_path = os.path.join(UPLOADS_DIR, decrypted_content.hash)
@@ -72,9 +72,7 @@ async def create_encrypted_content(
     encrypted_bin = cipher.encrypt(decrypted_bin)
     encrypted_hash_bin = sha256(encrypted_bin).digest()
     encrypted_hash = b58encode(encrypted_hash_bin).decode()
-    encrypted_content = db_session.query(StoredContent).filter(
+    encrypted_content = (await db_session.execute(select(StoredContent).where(StoredContent.hash == encrypted_hash))).scalars().first()
-        StoredContent.hash == encrypted_hash
-    ).first()
     if encrypted_content:
         make_log("create_encrypted_content", f"(d={decrypted_content.cid.serialize_v2()}) => (e={encrypted_content.cid.serialize_v2()}): already exist (found by encrypted_hash)", level="debug")
         return encrypted_content
@@ -99,19 +97,16 @@ async def create_encrypted_content(
         created=datetime.now(),
     )
     db_session.add(encrypted_content)
-    db_session.commit()
+    await db_session.commit()
 
     encrypted_path = os.path.join(UPLOADS_DIR, encrypted_hash)
     async with aiofiles.open(encrypted_path, mode='wb') as file:
         await file.write(encrypted_bin)
 
-    encrypted_content = db_session.query(StoredContent).filter(
+    encrypted_content = (await db_session.execute(select(StoredContent).where(StoredContent.hash == encrypted_hash))).scalars().first()
-        StoredContent.hash == encrypted_hash
-    ).first()
     assert encrypted_content, "Content not created"
     make_log("create_encrypted_content", f"(d={decrypted_content.cid.serialize_v2()}) => (e={encrypted_content.cid.serialize_v2()}): created new content/bin", level="debug")
     return encrypted_content
 
 
 
-

app/core/_secrets.py

@@ -1,4 +1,6 @@
+import asyncio
 from os import getenv, urandom
+import os
 
 from nacl.bindings import crypto_sign_seed_keypair
 from tonsdk.utils import Address
@@ -7,38 +9,44 @@ from app.core._blockchain.ton.wallet_v3cr3 import WalletV3CR3
 from app.core.models._config import ServiceConfig
 from app.core.storage import db_session
 from app.core.logger import make_log
-import os
 
 
-def load_hot_pair():
+async def load_hot_pair_async():
-    with db_session() as session:
+    async with db_session() as session:
         service_config = ServiceConfig(session)
-        hot_seed = service_config.get('private_key')
+        hot_seed = await service_config.get('private_key')
         if hot_seed is None:
             make_log("HotWallet", "No seed found, generating new one", level='info')
-            hot_seed = os.getenv("TON_INIT_HOT_SEED")
+            hot_seed_env = os.getenv("TON_INIT_HOT_SEED")
-            if not hot_seed:
+            if not hot_seed_env:
-                hot_seed = urandom(32)
+                hot_seed_bytes = urandom(32)
                 make_log("HotWallet", f"Generated random seed")
             else:
-                hot_seed = bytes.fromhex(hot_seed)
+                hot_seed_bytes = bytes.fromhex(hot_seed_env)
                 make_log("HotWallet", f"Loaded seed from env")
 
-            service_config.set('private_key', hot_seed.hex())
+            await service_config.set('private_key', hot_seed_bytes.hex())
-            return load_hot_pair()
+            hot_seed = hot_seed_bytes.hex()
 
-        hot_seed = bytes.fromhex(hot_seed)
+        hot_seed_bytes = bytes.fromhex(hot_seed)
-        public_key, private_key = crypto_sign_seed_keypair(hot_seed)
+        public_key, private_key = crypto_sign_seed_keypair(hot_seed_bytes)
-        return hot_seed, public_key, private_key
+        return hot_seed_bytes, public_key, private_key
 
 
 _extra_ton_wallet_options = {}
 if getenv('TON_CUSTOM_WALLET_ADDRESS'):
     _extra_ton_wallet_options['address'] = Address(getenv('TON_CUSTOM_WALLET_ADDRESS'))
 
-hot_seed, hot_pubkey, hot_privkey = load_hot_pair()
+
-service_wallet = WalletV3CR3(
+def _init_wallet():
+    # Safe to call at import time; Sanic event loop not running yet
+    hot_seed, hot_pubkey, hot_privkey = asyncio.run(load_hot_pair_async())
+    wallet = WalletV3CR3(
         private_key=hot_privkey,
         public_key=hot_pubkey,
         **_extra_ton_wallet_options
-)
+    )
+    return hot_seed, hot_pubkey, hot_privkey, wallet
+
+
+hot_seed, hot_pubkey, hot_privkey, service_wallet = _init_wallet()

app/core/_utils/create_maria_tables.py

@@ -1,10 +1,12 @@
+from sqlalchemy.ext.asyncio import AsyncEngine
 from app.core.models import BlockchainTask
 from app.core.models.base import AlchemyBase
 
 
-def create_maria_tables(engine):
+async def create_db_tables(engine: AsyncEngine):
-    """Create all tables in the database."""
+    """Create all tables in the database (PostgreSQL, async)."""
+    # ensure model import side-effects initialize mappers
     BlockchainTask()
-    AlchemyBase.metadata.create_all(engine)
+    async with engine.begin() as conn:
-    
+        await conn.run_sync(AlchemyBase.metadata.create_all)
     

app/core/auth_v1.py

@@ -56,9 +56,10 @@ class AuthenticationMixin:
             },
             created=datetime.fromtimestamp(init_ts)
         )
+        from sqlalchemy import select
         db_session.add(new_key)
-        db_session.commit()
+        await db_session.commit()
-        new_key = db_session.query(KnownKey).filter(KnownKey.seed_hash == new_key.seed_hash).first()
+        new_key = (await db_session.execute(select(KnownKey).where(KnownKey.seed_hash == new_key.seed_hash))).scalars().first()
         assert new_key, "Key not created"
         make_log("auth", f"[new-K] User {user_id} created new {token_type} key {new_key.id}")
         return {

app/core/background/convert_service.py

@@ -6,7 +6,7 @@ import json
 import shutil
 import magic  # python-magic for MIME detection
 from base58 import b58decode, b58encode
-from sqlalchemy import and_, or_
+from sqlalchemy import and_, or_, select
 from app.core.models.node_storage import StoredContent
 from app.core.models._telegram import Wrapped_CBotChat
 from app.core._utils.send_status import send_status
@@ -19,9 +19,9 @@ from app.core.content.content_id import ContentId
 
 
 async def convert_loop(memory):
-    with db_session() as session:
+    async with db_session() as session:
         # Query for unprocessed encrypted content
-        unprocessed_encrypted_content = session.query(StoredContent).filter(
+        unprocessed_encrypted_content = (await session.execute(select(StoredContent).where(
             and_(
                 StoredContent.type == "onchain/content",
                 or_(
@@ -29,15 +29,15 @@ async def convert_loop(memory):
                     StoredContent.ipfs_cid == None,
                 )
             )
-        ).first()
+        ))).scalars().first()
         if not unprocessed_encrypted_content:
             make_log("ConvertProcess", "No content to convert", level="debug")
             return
 
         # Достаем расшифрованный файл
-        decrypted_content = session.query(StoredContent).filter(
+        decrypted_content = (await session.execute(select(StoredContent).where(
             StoredContent.id == unprocessed_encrypted_content.decrypted_content_id
-        ).first()
+        ))).scalars().first()
         if not decrypted_content:
             make_log("ConvertProcess", "Decrypted content not found", level="error")
             return
@@ -78,7 +78,7 @@ async def convert_loop(memory):
                     option_name: decrypted_content.hash for option_name in ['high', 'low', 'low_preview']
                 }
             }
-            session.commit()
+            await session.commit()
             return
 
         # ==== Конвертация для видео или аудио: оригинальная логика ====
@@ -171,9 +171,7 @@ async def convert_loop(memory):
             file_hash = b58encode(bytes.fromhex(file_hash)).decode()
 
             # Save new StoredContent if not exists
-            if not session.query(StoredContent).filter(
+            if not (await session.execute(select(StoredContent).where(StoredContent.hash == file_hash))).scalars().first():
-                StoredContent.hash == file_hash
-            ).first():
                 new_content = StoredContent(
                     type="local/content_bin",
                     hash=file_hash,
@@ -183,7 +181,7 @@ async def convert_loop(memory):
                     created=datetime.now(),
                 )
                 session.add(new_content)
-                session.commit()
+                await session.commit()
 
             save_path = os.path.join(UPLOADS_DIR, file_hash)
             try:
@@ -233,13 +231,13 @@ async def convert_loop(memory):
             **unprocessed_encrypted_content.meta,
             'converted_content': converted_content
         }
-        session.commit()
+        await session.commit()
 
         # Notify user if needed
         if not unprocessed_encrypted_content.meta.get('upload_notify_msg_id'):
-            wallet_owner_connection = session.query(WalletConnection).filter(
+            wallet_owner_connection = (await session.execute(select(WalletConnection).where(
                 WalletConnection.wallet_address == unprocessed_encrypted_content.owner_address
-            ).order_by(WalletConnection.id.desc()).first()
+            ).order_by(WalletConnection.id.desc()))).scalars().first()
             if wallet_owner_connection:
                 wallet_owner_user = wallet_owner_connection.user
                 bot = Wrapped_CBotChat(
@@ -249,7 +247,7 @@ async def convert_loop(memory):
                     db_session=session
                 )
                 unprocessed_encrypted_content.meta['upload_notify_msg_id'] = await bot.send_content(session, unprocessed_encrypted_content)
-                session.commit()
+                await session.commit()
 
 
 async def main_fn(memory):

app/core/background/indexer_service.py

@@ -17,6 +17,7 @@ from app.core._utils.resolve_content import resolve_content
 from app.core.models.wallet_connection import WalletConnection
 from app.core._keyboards import get_inline_keyboard
 from app.core.models._telegram import Wrapped_CBotChat
+from sqlalchemy import select, and_, desc
 from app.core.storage import db_session
 import os
 import traceback
@@ -33,7 +34,7 @@ async def indexer_loop(memory, platform_found: bool, seqno: int) -> [bool, int]:
             platform_found = True
 
     make_log("Indexer", "Service running", level="debug")
-    with db_session() as session:
+    async with db_session() as session:
         try:
             result = await toncenter.run_get_method('EQD8TJ8xEWB1SpnRE4d89YO3jl0W0EiBnNS4IBaHaUmdfizE', 'get_pool_data')
             assert result['exit_code'] == 0, f"Error in get-method: {result}"
@@ -41,21 +42,21 @@ async def indexer_loop(memory, platform_found: bool, seqno: int) -> [bool, int]:
             assert result['stack'][1][0] == 'num', f"get second element is not num"
             usdt_per_ton = (int(result['stack'][0][1], 16) * 1e3) / int(result['stack'][1][1], 16)
             ton_per_star = 0.014 / usdt_per_ton
-            ServiceConfig(session).set('live_tonPerStar', [ton_per_star, datetime.utcnow().timestamp()])
+            await ServiceConfig(session).set('live_tonPerStar', [ton_per_star, datetime.utcnow().timestamp()])
             make_log("TON_Daemon", f"TON per STAR price: {ton_per_star}", level="DEBUG")
         except BaseException as e:
             make_log("TON_Daemon", f"Error while saving TON per STAR price: {e}" + '\n' + traceback.format_exc(), level="ERROR")
 
-        new_licenses = session.query(UserContent).filter(
+        new_licenses = (await session.execute(select(UserContent).where(
             and_(
                 ~UserContent.meta.contains({'notification_sent': True}),
                 UserContent.type == 'nft/listen'
             )
-        ).all()
+        ))).scalars().all()
         for new_license in new_licenses:
-            licensed_content = session.query(StoredContent).filter(
+            licensed_content = (await session.execute(select(StoredContent).where(
                 StoredContent.id == new_license.content_id
-            ).first()
+            ))).scalars().first()
             if not licensed_content:
                 make_log("Indexer", f"Licensed content not found: {new_license.content_id}", level="error")
 
@@ -70,10 +71,12 @@ async def indexer_loop(memory, platform_found: bool, seqno: int) -> [bool, int]:
                             session, licensed_content
                         )
 
-                    wallet_owner_connection = session.query(WalletConnection).filter_by(
+                    wallet_owner_connection = (await session.execute(
-                        wallet_address=licensed_content.owner_address,
+                        select(WalletConnection).where(
-                        invalidated=False
+                            WalletConnection.wallet_address == licensed_content.owner_address,
-                    ).order_by(desc(WalletConnection.id)).first()
+                            WalletConnection.invalidated == False
+                        ).order_by(desc(WalletConnection.id))
+                    )).scalars().first()
                     wallet_owner_user = wallet_owner_connection.user
                     if wallet_owner_user.telegram_id:
                         wallet_owner_bot = Wrapped_CBotChat(memory._telegram_bot, chat_id=wallet_owner_user.telegram_id, user=wallet_owner_user, db_session=session)
@@ -89,21 +92,19 @@ async def indexer_loop(memory, platform_found: bool, seqno: int) -> [bool, int]:
                     make_log("IndexerSendNewLicense", f"Error: {e}" + '\n' + traceback.format_exc(), level="error")
 
             new_license.meta = {**new_license.meta, 'notification_sent': True}
-            session.commit()
+            await session.commit()
 
-        content_without_cid = session.query(StoredContent).filter(
+        content_without_cid = (await session.execute(select(StoredContent).where(StoredContent.content_id == None))).scalars().all()
-            StoredContent.content_id == None
-        )
         for target_content in content_without_cid:
             target_cid = target_content.cid.serialize_v2()
             make_log("Indexer", f"Content without CID: {target_content.hash}, setting CID: {target_cid}", level="debug")
             target_content.content_id = target_cid
 
-        session.commit()
+        await session.commit()
 
-        last_known_index_ = session.query(StoredContent).filter(
+        last_known_index_ = (await session.execute(
-            StoredContent.onchain_index != None
+            select(StoredContent).where(StoredContent.onchain_index != None).order_by(StoredContent.onchain_index.desc())
-        ).order_by(StoredContent.onchain_index.desc()).first()
+        )).scalars().first()
         last_known_index = last_known_index_.onchain_index if last_known_index_ else 0
         last_known_index = max(last_known_index, 0)
         make_log("Indexer", f"Last known index: {last_known_index}", level="debug")
@@ -196,14 +197,13 @@ async def indexer_loop(memory, platform_found: bool, seqno: int) -> [bool, int]:
 
         user_wallet_connection = None
         if item_owner_address:
-            user_wallet_connection = session.query(WalletConnection).filter(
+            user_wallet_connection = (await session.execute(select(WalletConnection).where(
                 WalletConnection.wallet_address == item_owner_address.to_string(1, 1, 1)
-            ).first()
+            ))).scalars().first()
 
-        encrypted_stored_content = session.query(StoredContent).filter(
+        encrypted_stored_content = (await session.execute(select(StoredContent).where(
-            StoredContent.hash == item_content_hash_str,
+            StoredContent.hash == item_content_hash_str
-            # StoredContent.type.like("local%")
+        ))).scalars().first()
-        ).first()
         if encrypted_stored_content:
             is_duplicate = encrypted_stored_content.type.startswith("onchain") \
                            and encrypted_stored_content.onchain_index != item_index
@@ -234,14 +234,15 @@ async def indexer_loop(memory, platform_found: bool, seqno: int) -> [bool, int]:
                         )
 
                         try:
-                            for hint_message in session.query(KnownTelegramMessage).filter(
+                            result = await session.execute(select(KnownTelegramMessage).where(
                                 and_(
                                     KnownTelegramMessage.chat_id == user.telegram_id,
                                     KnownTelegramMessage.type == 'hint',
                                     cast(KnownTelegramMessage.meta['encrypted_content_hash'], String) == encrypted_stored_content.hash,
                                     KnownTelegramMessage.deleted == False
                                 )
-                            ).all():
+                            ))
+                            for hint_message in result.scalars().all():
                                 await user_uploader_wrapper.delete_message(hint_message.message_id)
                         except BaseException as e:
                             make_log("Indexer", f"Error while deleting hint messages: {e}" + '\n' + traceback.format_exc(), level="error")
@@ -260,7 +261,7 @@ async def indexer_loop(memory, platform_found: bool, seqno: int) -> [bool, int]:
                     **item_metadata_packed
                 }
 
-                session.commit()
+                await session.commit()
                 return platform_found, seqno
             else:
                 item_metadata_packed['copied_from'] = encrypted_stored_content.id
@@ -282,7 +283,7 @@ async def indexer_loop(memory, platform_found: bool, seqno: int) -> [bool, int]:
             updated=datetime.now()
         )
         session.add(onchain_stored_content)
-        session.commit()
+        await session.commit()
         make_log("Indexer", f"Item indexed: {item_content_hash_str}", level="info")
         last_known_index += 1
 

app/core/background/license_service.py

@@ -3,7 +3,7 @@ from base64 import b64decode
 from datetime import datetime, timedelta
 
 from base58 import b58encode
-from sqlalchemy import and_, or_
+from sqlalchemy import and_, or_, select, desc
 from tonsdk.boc import Cell
 from tonsdk.utils import Address
 
@@ -27,7 +27,7 @@ import traceback
 
 async def license_index_loop(memory, platform_found: bool, seqno: int) -> [bool, int]:
     make_log("LicenseIndex", "Service running", level="debug")
-    with db_session() as session:
+    async with db_session() as session:
         async def check_telegram_stars_transactions():
             # Проверка звездных telegram транзакций, обновление paid
             offset = {'desc': 'Статичное число заранее известного количества транзакций, которое даже не знает наш бот', 'value': 1}['value'] + \
@@ -45,19 +45,19 @@ async def license_index_loop(memory, platform_found: bool, seqno: int) -> [bool,
                         continue
 
                     try:
-                        existing_invoice = session.query(StarsInvoice).filter(
+                        existing_invoice = (await session.execute(select(StarsInvoice).where(
                             StarsInvoice.external_id == star_payment.source.invoice_payload
-                        ).first()
+                        ))).scalars().first()
                         if not existing_invoice:
                             continue
 
                         if star_payment.amount == existing_invoice.amount:
                             if not existing_invoice.paid:
                                 existing_invoice.paid = True
-                                session.commit()
+                                await session.commit()
 
-                                licensed_content = session.query(StoredContent).filter(StoredContent.hash == existing_invoice.content_hash).first()
+                                licensed_content = (await session.execute(select(StoredContent).where(StoredContent.hash == existing_invoice.content_hash))).scalars().first()
-                                user = session.query(User).filter(User.id == existing_invoice.user_id).first()
+                                user = (await session.execute(select(User).where(User.id == existing_invoice.user_id))).scalars().first()
 
                                 await (Wrapped_CBotChat(memory._client_telegram_bot, chat_id=user.telegram_id, user=user, db_session=session)).send_content(
                                     session, licensed_content
@@ -73,9 +73,10 @@ async def license_index_loop(memory, platform_found: bool, seqno: int) -> [bool,
             make_log("StarsProcessing", f"Error: {e}" + '\n' + traceback.format_exc(), level="error")
 
         # Проверка кошельков пользователей на появление новых NFT, добавление их в базу как неопознанные
-        for user in session.query(User).filter(
+        users = (await session.execute(select(User).where(
             User.last_use > datetime.now() - timedelta(hours=4)
-        ).order_by(User.updated.asc()).all():
+        ).order_by(User.updated.asc()))).scalars().all()
+        for user in users:
             user_wallet_address = user.wallet_address(session)
             if not user_wallet_address:
                 make_log("LicenseIndex", f"User {user.id} has no wallet address", level="info")
@@ -91,17 +92,17 @@ async def license_index_loop(memory, platform_found: bool, seqno: int) -> [bool,
             try:
                 await user.scan_owned_user_content(session)
                 user.meta = {**user.meta, 'last_updated_licenses': datetime.now().isoformat()}
-                session.commit()
+                await session.commit()
             except BaseException as e:
                 make_log("LicenseIndex", f"Error: {e}" + '\n' + traceback.format_exc(), level="error")
         
         # Проверка NFT на актуальность данных, в том числе уже проверенные
-        process_content = session.query(UserContent).filter(
+        process_content = (await session.execute(select(UserContent).where(
             and_(
                 UserContent.type.startswith('nft/'),
                 UserContent.updated < (datetime.now() - timedelta(minutes=60)),
             )
-        ).order_by(UserContent.updated.asc()).first()
+        ).order_by(UserContent.updated.asc()))).scalars().first()
         if process_content:
             make_log("LicenseIndex", f"Syncing content with blockchain: {process_content.id}", level="info")
             try:
@@ -110,7 +111,7 @@ async def license_index_loop(memory, platform_found: bool, seqno: int) -> [bool,
                 make_log("LicenseIndex", f"Error: {e}" + '\n' + traceback.format_exc(), level="error")
             finally:
                 process_content.updated = datetime.now()
-                session.commit()
+                await session.commit()
 
     return platform_found, seqno
 

app/core/background/ton_service.py

@@ -125,7 +125,7 @@ async def main_fn(memory):
             sw_seqno_value = await get_sw_seqno()
             make_log("TON", f"Service running ({sw_seqno_value})", level="debug")
 
-            with db_session() as session:
+            async with db_session() as session:
                 # Проверка отправленных сообщений
                 await send_status("ton_daemon", f"working: processing in-txs (seqno={sw_seqno_value})")
                 async def process_incoming_transaction(transaction: dict):
@@ -142,14 +142,17 @@ async def main_fn(memory):
                         in_msg_created_at = in_msg_slice.read_uint(64)
                         in_msg_epoch = int(in_msg_created_at // (60 * 60))
                         in_msg_seqno = HighloadQueryId.from_query_id(in_msg_query_id).to_seqno()
+                        from sqlalchemy import select
                         in_msg_blockchain_task = (
-                            session.query(BlockchainTask).filter(
+                            await session.execute(
+                                select(BlockchainTask).where(
                                     and_(
                                         BlockchainTask.seqno == in_msg_seqno,
                                         BlockchainTask.epoch == in_msg_epoch,
                                     )
                                 )
-                        ).first()
+                            )
+                        ).scalars().first()
                         if not in_msg_blockchain_task:
                             return
 
@@ -157,7 +160,7 @@ async def main_fn(memory):
                             in_msg_blockchain_task.status = 'done'
                             in_msg_blockchain_task.transaction_hash = transaction_hash
                             in_msg_blockchain_task.transaction_lt = transaction_lt
-                            session.commit()
+                            await session.commit()
 
                     for blockchain_message in [transaction['in_msg']]:
                         try:
@@ -177,11 +180,11 @@ async def main_fn(memory):
 
                 await send_status("ton_daemon", f"working: processing out-txs (seqno={sw_seqno_value})")
                 # Отправка подписанных сообщений
-                for blockchain_task in (
+                from sqlalchemy import select
-                    session.query(BlockchainTask).filter(
+                _processing = (await session.execute(select(BlockchainTask).where(
-                        BlockchainTask.status == 'processing',
+                    BlockchainTask.status == 'processing'
-                    ).order_by(BlockchainTask.updated.asc()).all()
+                ).order_by(BlockchainTask.updated.asc()))).scalars().all()
-                ):
+                for blockchain_task in _processing:
                     make_log("TON_Daemon", f"Processing task (processing) {blockchain_task.id}")
                     query_boc = bytes.fromhex(blockchain_task.meta['signed_message'])
                     errors_list = []
@@ -210,23 +213,22 @@ async def main_fn(memory):
                             # or sum([int("terminating vm with exit code 36" in e) for e in errors_list]) > 0:
                         make_log("TON_Daemon", f"Task {blockchain_task.id} done", level="DEBUG")
                         blockchain_task.status = 'done'
-                        session.commit()
+                        await session.commit()
                         continue
 
                     await asyncio.sleep(0.5)
 
                 await send_status("ton_daemon", f"working: creating new messages (seqno={sw_seqno_value})")
                 # Создание новых подписей
-                for blockchain_task in (
+                _waiting = (await session.execute(select(BlockchainTask).where(BlockchainTask.status == 'wait'))).scalars().all()
-                    session.query(BlockchainTask).filter(BlockchainTask.status == 'wait').all()
+                for blockchain_task in _waiting:
-                ):
                     try:
                         # Check processing tasks in current epoch < 3_000_000
-                        if (
+                        from sqlalchemy import func
-                            session.query(BlockchainTask).filter(
+                        _cnt = (await session.execute(select(func.count()).select_from(BlockchainTask).where(
-                                BlockchainTask.epoch == blockchain_task.epoch,
+                            BlockchainTask.epoch == blockchain_task.epoch
-                            ).count() > 3_000_000
+                        ))).scalar() or 0
-                        ):
+                        if _cnt > 3_000_000:
                             make_log("TON", f"Too many processing tasks in epoch {blockchain_task.epoch}", level="error")
                             await send_status("ton_daemon", f"working: too many tasks in epoch {blockchain_task.epoch}")
                             await asyncio.sleep(5)
@@ -235,10 +237,11 @@ async def main_fn(memory):
                         sign_created = int(datetime.utcnow().timestamp()) - 60
                         try:
                             current_epoch = int(datetime.utcnow().timestamp() // (60 * 60))
+                            from sqlalchemy import func
                             max_epoch_seqno = (
-                                session.query(func.max(BlockchainTask.seqno)).filter(
+                                (await session.execute(select(func.max(BlockchainTask.seqno)).where(
                                     BlockchainTask.epoch == current_epoch
-                                ).scalar() or 0
+                                ))).scalar() or 0
                             )
                             current_epoch_shift = 3_000_000 if current_epoch % 2 == 0 else 0
                             current_seqno = max_epoch_seqno + 1 + (current_epoch_shift if max_epoch_seqno == 0 else 0)
@@ -266,7 +269,7 @@ async def main_fn(memory):
                             'sign_created': sign_created,
                             'signed_message': query_boc.hex(),
                         }
-                        session.commit()
+                        await session.commit()
                         make_log("TON", f"Created signed message for task {blockchain_task.id}" + '\n' + traceback.format_exc(), level="info")
                     except BaseException as e:
                         make_log("TON", f"Error processing task {blockchain_task.id}: {e}" + '\n' + traceback.format_exc(), level="error")
@@ -287,4 +290,3 @@ async def main_fn(memory):
 
 
 
-

app/core/content/utils.py

@@ -26,7 +26,9 @@ async def create_new_content(
     content_hash_bin = sha256(content_bin).digest()
     content_hash_b58 = b58encode(content_hash_bin).decode()
 
-    new_content = db_session.query(StoredContent).filter(StoredContent.hash == content_hash_b58).first()
+    from sqlalchemy import select
+    result = await db_session.execute(select(StoredContent).where(StoredContent.hash == content_hash_b58))
+    new_content = result.scalars().first()
     if new_content:
         return new_content, False
 
@@ -38,8 +40,9 @@ async def create_new_content(
 
     )
     db_session.add(new_content)
-    db_session.commit()
+    await db_session.commit()
-    new_content = db_session.query(StoredContent).filter(StoredContent.hash == content_hash_b58).first()
+    result = await db_session.execute(select(StoredContent).where(StoredContent.hash == content_hash_b58))
+    new_content = result.scalars().first()
     assert new_content, "Content not created (through utils)"
     content_filepath = os.path.join(UPLOADS_DIR, content_hash_b58)
     async with aiofiles.open(content_filepath, 'wb') as file:

app/core/models/_config.py

@@ -1,6 +1,6 @@
 
 from app.core.models.base import AlchemyBase
-from sqlalchemy import Column, BigInteger, Integer, String, ForeignKey, DateTime, JSON, Boolean
+from sqlalchemy import Column, Integer, String, JSON, select
 
 
 class ServiceConfigValue(AlchemyBase):
@@ -19,20 +19,18 @@ class ServiceConfig:
     def __init__(self, session):
         self.session = session
 
-    def get(self, key, default=None):
+    async def get(self, key, default=None):
-        result = self.session.query(ServiceConfigValue).filter(ServiceConfigValue.key == key).first()
+        result = (await self.session.execute(select(ServiceConfigValue).where(ServiceConfigValue.key == key))).scalars().first()
         return (result.value if result else None) or default
 
-    def set(self, key, value):
+    async def set(self, key, value):
-        config_value = self.session.query(ServiceConfigValue).filter(
+        result = (await self.session.execute(select(ServiceConfigValue).where(ServiceConfigValue.key == key))).scalars().first()
-            ServiceConfigValue.key == key
+        if not result:
-        ).first()
+            result = ServiceConfigValue(key=key)
-        if not config_value:
+            self.session.add(result)
-            config_value = ServiceConfigValue(key=key)
+            await self.session.commit()
-            self.session.add(config_value)
+            return await self.set(key, value)
-            self.session.commit()
-            return self.set(key, value)
 
-        config_value.packed_value = {'value': value}
+        result.packed_value = {'value': value}
-        self.session.commit()
+        await self.session.commit()
         return

app/core/models/_telegram/templates/player.py

@@ -1,4 +1,4 @@
-from sqlalchemy import and_
+from sqlalchemy import and_, select
 from app.core.models.node_storage import StoredContent
 from app.core.models.content.user_content import UserContent, UserAction
 from app.core.logger import make_log
@@ -27,17 +27,17 @@ class PlayerTemplates:
             if not content.encrypted:
                 local_content = content
             else:
-                local_content = db_session.query(StoredContent).filter_by(
+                local_content = (await db_session.execute(select(StoredContent).where(StoredContent.id == content.decrypted_content_id))).scalars().first()
-                    id=content.decrypted_content_id
-                ).first()
                 # TODO: add check decrypted_content by .format_json()['content_cid']
                 if local_content:
                     cd_log += f"Decrypted: {local_content.hash}. "
                 else:
                     cd_log += "Can't decrypt content. "
 
-        user_wallet_address = self.user.wallet_address(self.db_session)
+        user_wallet_address = await self.user.wallet_address_async(self.db_session)
-        user_existing_license = self.db_session.query(UserContent).filter_by(user_id=self.user.id, content_id=content.id).first()
+        user_existing_license = (await self.db_session.execute(select(UserContent).where(
+            and_(UserContent.user_id == self.user.id, UserContent.content_id == content.id)
+        ))).scalars().first()
 
         if local_content:
             content_meta = content.json_format()
@@ -48,12 +48,12 @@ class PlayerTemplates:
             except:
                 content_type, content_encoding = 'application', 'x-binary'
 
-            content_metadata = StoredContent.from_cid(db_session, content_meta.get('metadata_cid') or None)
+            content_metadata = await StoredContent.from_cid_async(db_session, content_meta.get('metadata_cid') or None)
             with open(content_metadata.filepath, 'r') as f:
                 content_metadata_json = json.loads(f.read())
 
             try:
-                cover_content = StoredContent.from_cid(self.db_session, content_meta.get('cover_cid') or None)
+                cover_content = await StoredContent.from_cid_async(self.db_session, content_meta.get('cover_cid') or None)
                 cd_log += f"Cover content: {cover_content.cid.serialize_v2()}. "
             except BaseException as e:
                 cd_log += f"Can't get cover content: {e}. "
@@ -88,12 +88,15 @@ class PlayerTemplates:
 <blockquote><a href="{content_share_link['url']}">🔴 «открыть в MY»</a></blockquote>"""
 
         make_log("TG-Player", f"Send content {content_type} ({content_encoding}) to chat {self._chat_id}. {cd_log}")
-        for kmsg in self.db_session.query(KnownTelegramMessage).filter_by(
+        kmsgs = (await self.db_session.execute(select(KnownTelegramMessage).where(
-            content_id=content.id,
+            and_(
-            chat_id=self._chat_id,
+                KnownTelegramMessage.content_id == content.id,
-            type=f'content/{content_type}',
+                KnownTelegramMessage.chat_id == self._chat_id,
-            deleted=False
+                KnownTelegramMessage.type == f'content/{content_type}',
-        ).all():
+                KnownTelegramMessage.deleted == False
+            )
+        ))).scalars().all()
+        for kmsg in kmsgs:
             await self.delete_message(kmsg.message_id)
 
         r = await tg_process_template(

app/core/models/_telegram/wrapped_bot.py

@@ -1,7 +1,7 @@
 from aiogram import Bot, types
 from datetime import datetime, timedelta
 
-from sqlalchemy import and_
+from sqlalchemy import and_, select
 
 from app.core.logger import make_log
 from app.core.models.messages import KnownTelegramMessage
@@ -46,14 +46,15 @@ class Wrapped_CBotChat(T, PlayerTemplates):
         if self.db_session:
             if message_type == 'common':
                 ci = 0
-                for oc_msg in self.db_session.query(KnownTelegramMessage).filter(
+                result = await self.db_session.execute(select(KnownTelegramMessage).where(
                     and_(
                         KnownTelegramMessage.type == 'common',
                         KnownTelegramMessage.bot_id == self.bot_id,
                         KnownTelegramMessage.chat_id == self._chat_id,
                         KnownTelegramMessage.deleted == False
                     )
-                ).all():
+                ))
+                for oc_msg in result.scalars().all():
                     make_log(self, f"Delete old message {oc_msg.message_id} {oc_msg.type} {oc_msg.bot_id} {oc_msg.chat_id}")
                     await self.delete_message(oc_msg.message_id)
                     ci += 1
@@ -75,7 +76,7 @@ class Wrapped_CBotChat(T, PlayerTemplates):
                         content_id=content_id
                     )
                 )
-                self.db_session.commit()
+                await self.db_session.commit()
             else:
                 make_log(self, f"Unknown result type: {type(result)}", level='warning')
 
@@ -127,14 +128,16 @@ class Wrapped_CBotChat(T, PlayerTemplates):
                 message_id
             )):
                 if self.db_session:
-                    known_message = self.db_session.query(KnownTelegramMessage).filter(
+                    known_message = (await self.db_session.execute(select(KnownTelegramMessage).where(
+                        and_(
                             KnownTelegramMessage.bot_id == self.bot_id,
                             KnownTelegramMessage.chat_id == self._chat_id,
                             KnownTelegramMessage.message_id == message_id
-                    ).first()
+                        )
+                    ))).scalars().first()
                     if known_message:
                         known_message.deleted = True
-                        self.db_session.commit()
+                        await self.db_session.commit()
         except Exception as e:
             make_log(self, f"Error deleting message {self._chat_id}/{message_id}. Error: {e}", level='warning')
             return None

app/core/models/asset.py

@@ -29,22 +29,21 @@ class Asset(AlchemyBase):
         AlchemyBase.metadata.create_all(engine)
 
     @classmethod
-    def find(cls, session, **kwargs):
+    async def find_async(cls, session, **kwargs):
+        from sqlalchemy import select, func
         if 'symbol' in kwargs:
             kwargs['symbol'] = kwargs['symbol'].upper()
 
-        result = session.query(cls).filter_by(**kwargs)
+        result = await session.execute(select(cls).filter_by(**kwargs))
-        results_count = result.count()
+        row = result.scalars().first()
-        if results_count == 0:
+        if row:
-            any_count = session.query(cls).count()
+            return row
+
+        any_count = (await session.execute(select(func.count()).select_from(cls))).scalar() or 0
         if any_count == 0:
             init_asset = cls(**DEFAULT_ASSET_INITOBJ)
             session.add(init_asset)
-                session.commit()
+            await session.commit()
-                return cls.find(session, **kwargs)
+            return await cls.find_async(session, **kwargs)
 
         raise Exception(f"Asset not found: {kwargs}")
-        elif results_count == 1:
-            return result.first()
-        else:
-            raise Exception(f"Multiple assets found: {results_count}")

app/core/models/content/indexation_mixins.py

@@ -1,7 +1,7 @@
 import traceback
 
 import base58
-from sqlalchemy import and_
+from sqlalchemy import and_, select
 
 from app.core.logger import make_log
 from app.core.models import StoredContent
@@ -57,13 +57,9 @@ class UserContentIndexationMixin:
                 values_slice = cc_indexator_data['values'].begin_parse()
                 content_hash_b58 = base58.b58encode(bytes.fromhex(hex(values_slice.read_uint(256))[2:])).decode()
                 make_log("UserContent", f"License ({self.onchain_address}) content hash: {content_hash_b58}", level="info")
-                stored_content = db_session.query(StoredContent).filter(
+                stored_content = (await db_session.execute(select(StoredContent).where(
-                    and_(
+                    and_(StoredContent.type == 'onchain/content', StoredContent.hash == content_hash_b58)
-                        StoredContent.type == 'onchain/content',
+                ))).scalars().first()
-                        StoredContent.hash == content_hash_b58,
-
-                    )
-                ).first()
                 trusted_cop_address_result = await toncenter.run_get_method(stored_content.meta['item_address'], 'get_nft_address_by_index', [['num', cc_indexator_data['index']]])
                 assert trusted_cop_address_result.get('exit_code', -1) == 0, "Trusted cop address error"
                 trusted_cop_address = Cell.one_from_boc(b64decode(trusted_cop_address_result['stack'][0][1]['bytes'])).begin_parse().read_msg_addr().to_string(1, 1, 1)
@@ -72,7 +68,7 @@ class UserContentIndexationMixin:
                 self.owner_address = cc_indexator_data['owner_address']
                 self.type = 'nft/listen'
                 self.content_id = stored_content.id
-                db_session.commit()
+                await db_session.commit()
             except BaseException as e:
                 errored = True
                 make_log("UserContent", f"Error: {e}" + '\n' + traceback.format_exc(), level="error")
@@ -80,7 +76,6 @@ class UserContentIndexationMixin:
         if errored is True:
             self.type = 'nft/unknown'
             self.content_id = None
-            db_session.commit()
+            await db_session.commit()
-
 
 

app/core/models/node_storage.py

@@ -96,6 +96,30 @@ class StoredContent(AlchemyBase, AudioContentMixin):
             make_log("NodeStorage.open_content", f"Can't open content: {self.id} {e}", level='warning')
             raise e
 
+    async def open_content_async(self, db_session, content_type=None):
+        from sqlalchemy import select
+        try:
+            decrypted_content = self if not self.encrypted else None
+            encrypted_content = self if self.encrypted else None
+            if not decrypted_content:
+                decrypted_content = (await db_session.execute(select(StoredContent).where(StoredContent.id == self.decrypted_content_id))).scalars().first()
+            else:
+                encrypted_content = (await db_session.execute(select(StoredContent).where(StoredContent.decrypted_content_id == self.id))).scalars().first()
+
+            assert decrypted_content, "Can't get decrypted content"
+            assert encrypted_content, "Can't get encrypted content"
+            _ct = content_type or decrypted_content.json_format()['content_type']
+            content_type = _ct.split('/')[0] if _ct else 'application'
+
+            return {
+                'encrypted_content': encrypted_content,
+                'decrypted_content': decrypted_content,
+                'content_type': content_type or 'application/x-binary'
+            }
+        except BaseException as e:
+            make_log("NodeStorage.open_content_async", f"Can't open content: {self.id} {e}", level='warning')
+            raise e
+
     def json_format(self):
         extra_fields = {}
         if self.type.startswith('local'):
@@ -155,3 +179,15 @@ class StoredContent(AlchemyBase, AudioContentMixin):
         assert content, "Content not found"
         return content
 
+    @classmethod
+    async def from_cid_async(cls, db_session, content_id):
+        from sqlalchemy import select
+        if isinstance(content_id, str):
+            cid = ContentId.deserialize(content_id)
+        else:
+            cid = content_id
+
+        result = await db_session.execute(select(StoredContent).where(StoredContent.hash == cid.content_hash_b58))
+        content = result.scalars().first()
+        assert content, "Content not found"
+        return content

app/core/models/user/wallet_mixin.py

@@ -10,18 +10,21 @@ from httpx import AsyncClient
 
 
 class WalletMixin:
-    def wallet_connection(self, db_session):
+    async def wallet_connection_async(self, db_session):
-        return db_session.query(WalletConnection).filter(
+        from sqlalchemy import select, and_, desc
-            WalletConnection.user_id == self.id,
+        result = await db_session.execute(
-            WalletConnection.invalidated == False
+            select(WalletConnection)
-        ).order_by(WalletConnection.created.desc()).first()
+            .where(and_(WalletConnection.user_id == self.id, WalletConnection.invalidated == False))
+            .order_by(WalletConnection.created.desc())
+        )
+        return result.scalars().first()
 
-    def wallet_address(self, db_session):
+    async def wallet_address_async(self, db_session):
-        wallet_connection = self.wallet_connection(db_session)
+        wc = await self.wallet_connection_async(db_session)
-        return wallet_connection.wallet_address if wallet_connection else None
+        return wc.wallet_address if wc else None
 
     async def scan_owned_user_content(self, db_session):
-        user_wallet_address = self.wallet_address(db_session)
+        user_wallet_address = await self.wallet_address_async(db_session)
 
         async def get_nft_items_list():
             try:
@@ -40,9 +43,8 @@ class WalletMixin:
             item_address = Address(nft_item['address']).to_string(1, 1, 1)
             owner_address = Address(nft_item['owner']['address']).to_string(1, 1, 1)
 
-            user_content = db_session.query(UserContent).filter(
+            from sqlalchemy import select
-                UserContent.onchain_address == item_address
+            user_content = (await db_session.execute(select(UserContent).where(UserContent.onchain_address == item_address))).scalars().first()
-            ).first()
             if user_content:
                 continue
 
@@ -57,18 +59,18 @@ class WalletMixin:
                 created=datetime.now(),
                 meta={},
                 user_id=self.id,
-                wallet_connection_id=self.wallet_connection(db_session).id,
+                wallet_connection_id=(await self.wallet_connection_async(db_session)).id,
                 status="active"
             )
             db_session.add(user_content)
-            db_session.commit()
+            await db_session.commit()
             make_log(self, f"New onchain NFT found: {item_address}", level='info')
 
     async def ____scan_owned_user_content(self, db_session):
         page_id = -1
         page_size = 100
         have_next_page = True
-        user_wallet_address = self.wallet_address(db_session)
+        user_wallet_address = await self.wallet_address_async(db_session)
         while have_next_page:
             page_id += 1
             nfts_list = await toncenter.get_nft_items(limit=100, offset=page_id * page_size, owner_address=user_wallet_address)
@@ -81,9 +83,8 @@ class WalletMixin:
                     item_address = Address(nft_item['address']).to_string(1, 1, 1)
                     owner_address = Address(nft_item['owner_address']).to_string(1, 1, 1)
 
-                    user_content = db_session.query(UserContent).filter(
+                    from sqlalchemy import select
-                        UserContent.onchain_address == item_address
+                    user_content = (await db_session.execute(select(UserContent).where(UserContent.onchain_address == item_address))).scalars().first()
-                    ).first()
                     if user_content:
                         continue
 
@@ -105,11 +106,11 @@ class WalletMixin:
                             'metadata_uri': nft_content,
                         },
                         user_id=self.id,
-                        wallet_connection_id=self.wallet_connection(db_session).id,
+                        wallet_connection_id=(await self.wallet_connection_async(db_session)).id,
                         status="active"
                     )
                     db_session.add(user_content)
-                    db_session.commit()
+                    await db_session.commit()
 
                     make_log(self, f"New onchain NFT found: {item_address}", level='info')
                 except BaseException as e:
@@ -122,6 +123,6 @@ class WalletMixin:
         except BaseException as e:
             make_log(self, f"Error while scanning user content: {e}", level='error')
 
-        return self.db_session.query(UserContent).filter(
+        from sqlalchemy import select
-            UserContent.user_id == self.id
+        result = await db_session.execute(select(UserContent).where(UserContent.user_id == self.id).offset(offset).limit(limit))
-        ).offset(offset).limit(limit).all()
+        return result.scalars().all()

app/core/storage.py

@@ -1,45 +1,57 @@
 import time
-from contextlib import contextmanager
+from contextlib import asynccontextmanager
 
-from sqlalchemy import create_engine
+from sqlalchemy import text
-from sqlalchemy.orm import sessionmaker
+from sqlalchemy.ext.asyncio import create_async_engine, async_sessionmaker, AsyncSession
-from sqlalchemy.sql import text
 
-from app.core._config import MYSQL_URI, MYSQL_DATABASE
+from app.core._config import DATABASE_URL
 from app.core.logger import make_log
-from sqlalchemy.pool import NullPool
-
-engine = create_engine(MYSQL_URI, poolclass=NullPool)  #, echo=True)
-Session = sessionmaker(bind=engine)
 
 
-database_initialized = False
+def _to_async_dsn(url: str) -> str:
-while not database_initialized:
+    # Convert psycopg2 DSN to asyncpg DSN
+    # postgresql+psycopg2://user:pass@host:5432/db -> postgresql+asyncpg://user:pass@host:5432/db
+    return url.replace("+psycopg2", "+asyncpg")
+
+
+# Async engine for PostgreSQL
+engine = create_async_engine(
+    _to_async_dsn(DATABASE_URL),
+    pool_size=10,
+    max_overflow=20,
+    pool_timeout=30,
+    pool_recycle=1800,
+    pool_pre_ping=True,
+)
+
+AsyncSessionLocal = async_sessionmaker(engine, expire_on_commit=False, class_=AsyncSession)
+
+
+async def wait_db_ready():
+    ready = False
+    while not ready:
         try:
-        with Session() as session:
+            async with engine.connect() as conn:
-            databases_list = session.execute(text("SHOW DATABASES;"))
+                await conn.execute(text("SELECT 1"))
-            databases_list = [row[0] for row in databases_list]
+                ready = True
-            make_log("SQL", 'Database list: ' + str(databases_list), level='debug')
-            assert MYSQL_DATABASE in databases_list, 'Database not found'
-            database_initialized = True
         except Exception as e:
-        make_log("SQL", 'MariaDB is not ready yet: ' + str(e), level='debug')
+            make_log("SQL", 'PostgreSQL is not ready yet: ' + str(e), level='debug')
             time.sleep(1)
 
-engine = create_engine(f"{MYSQL_URI}/{MYSQL_DATABASE}", poolclass=NullPool)
-Session = sessionmaker(bind=engine)
 
-
+@asynccontextmanager
-@contextmanager
+async def db_session(auto_commit: bool = False):
-def db_session(auto_commit=False):
+    session: AsyncSession = AsyncSessionLocal()
-    _session = Session()
     try:
-        yield _session
+        yield session
-        if auto_commit is True:
+        if auto_commit:
-            _session.commit()
+            await session.commit()
     except BaseException as e:
-        _session.rollback()
+        await session.rollback()
         raise e
     finally:
-        _session.close()
+        await session.close()
 
+
+def new_session() -> AsyncSession:
+    return AsyncSessionLocal()

app/core/transactions.py

@@ -1,19 +1,19 @@
 from datetime import datetime
 
+from sqlalchemy import select, and_, func
 from app.core.logger import make_log
 from app.core.models import Memory, User, UserBalance, Asset, InternalTransaction
 from app.core.storage import db_session
 
 
-def get_user_balance(session, user: User, asset: Asset) -> UserBalance:
+async def get_user_balance(session, user: User, asset: Asset) -> UserBalance:
     assert user, "No user"
     assert asset, "No asset"
-    result = session.query(UserBalance).filter(
+    result = await session.execute(select(UserBalance).where(
-        UserBalance.user_id == user.id,
+        and_(UserBalance.user_id == user.id, UserBalance.asset_id == asset.id)
-        UserBalance.asset_id == asset.id
+    ))
-    )
+    row = result.scalars().first()
-    results_count = result.count()
+    if not row:
-    if results_count == 0:
         user_balance = UserBalance(
             user_id=user.id,
             asset_id=asset.id,
@@ -21,12 +21,9 @@ def get_user_balance(session, user: User, asset: Asset) -> UserBalance:
             created=datetime.now(),
         )
         session.add(user_balance)
-        session.commit()
+        await session.commit()
-        return get_user_balance(session, user, asset)
+        return await get_user_balance(session, user, asset)
-    elif results_count == 1:
+    return row
-        return result.first()
-    else:
-        raise Exception(f"Multiple user balances found: {results_count}")
 
 
 async def make_internal_transaction(
@@ -46,13 +43,13 @@ async def make_internal_transaction(
         raise Exception(f"Invalid amount: {amount}")
 
     abs_amount = abs(amount)
-    with db_session(auto_commit=False) as session:
+    async with db_session(auto_commit=False) as session:
         async with memory.transaction():
-            user = session.query(User).filter_by(id=user_id).first()
+            user = (await session.execute(select(User).where(User.id == user_id))).scalars().first()
             assert user, "No user"
-            asset = session.query(Asset).filter_by(id=asset_id).first()
+            asset = (await session.execute(select(Asset).where(Asset.id == asset_id))).scalars().first()
             assert asset, "No asset"
-            user_balance = get_user_balance(session, user, asset)
+            user_balance = await get_user_balance(session, user, asset)
             assert user_balance, "No user balance"
             if is_spent is True:
                 if abs_amount > user_balance.balance:
@@ -71,6 +68,6 @@ async def make_internal_transaction(
                 created=datetime.now(),
             )
             session.add(internal_transaction)
-            session.commit()
+            await session.commit()
 
         make_log(user, f"Made internal transaction: {'-' if is_spent else ''}{abs_amount} {asset.symbol}, type: {type}")

requirements.txt

@@ -2,7 +2,8 @@ sanic==21.9.1
 websockets==10.0
 sqlalchemy==2.0.23
 python-dotenv==1.0.0
-pymysql==1.1.0
+psycopg2-binary==2.9.9
+asyncpg==0.29.0
 aiogram==3.13.0
 pytonconnect==0.3.0
 base58==2.1.1
@@ -16,5 +17,3 @@ pydub==0.25.1
 pillow==10.2.0
 ffmpeg-python==0.2.0
 python-magic==0.4.27
-
-