Edr/video bugs

aana/alembic/env.py

@@ -3,7 +3,6 @@
 from alembic import context
 from sqlalchemy import engine_from_config, pool
 
-from aana.configs.db import create_database_engine
 from aana.configs.settings import settings
 from aana.models.db.base import BaseEntity
 
@@ -38,12 +37,13 @@ def run_migrations_offline() -> None:
     script output.
 
     """
-    engine = create_database_engine(settings.db_config)
+    engine = settings.db_config.get_engine()
     context.configure(
         url=engine.url,
         target_metadata=target_metadata,
         literal_binds=True,
         dialect_opts={"paramstyle": "named"},
+        render_as_batched=True,
     )
 
     with context.begin_transaction():
@@ -58,7 +58,7 @@ def run_migrations_online() -> None:
 
     """
     config_section = config.get_section(config.config_ini_section, {})
-    engine = create_database_engine(settings.db_config)
+    engine = settings.db_config.get_engine()
     config_section["sqlalchemy.url"] = engine.url
     connectable = engine_from_config(
         config_section,
@@ -67,7 +67,9 @@ def run_migrations_online() -> None:
     )
 
     with connectable.connect() as connection:
-        context.configure(connection=connection, target_metadata=target_metadata)
+        context.configure(
+            connection=connection, target_metadata=target_metadata, render_as_batch=True
+        )
 
         with context.begin_transaction():
             context.run_migrations()

aana/alembic/versions/0918cb09ac67_name_constraints_fix_cascading_deletes.py

@@ -0,0 +1,46 @@
+"""Name constraints, fix cascading deletes.
+
+Revision ID: 0918cb09ac67
+Revises: 86a31568e6c2
+Create Date: 2024-03-07 12:56:36.129852
+
+"""
+from collections.abc import Sequence
+
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision: str = "0918cb09ac67"
+down_revision: str | None = "86a31568e6c2"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    """Upgrade database to this revision from previous."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table("media", schema=None) as batch_op:
+        batch_op.drop_constraint("fk_media_video_id_video", type_="foreignkey")
+        batch_op.create_foreign_key(
+            batch_op.f("fk_media_video_id_video"),
+            "video",
+            ["video_id"],
+            ["id"],
+            ondelete="CASCADE",
+        )
+
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade database from this revision to previous."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table("media", schema=None) as batch_op:
+        batch_op.drop_constraint(
+            batch_op.f("fk_media_video_id_video"), type_="foreignkey"
+        )
+        batch_op.create_foreign_key(
+            "fk_media_video_id_video", "video", ["video_id"], ["id"]
+        )
+
+    # ### end Alembic commands ###

aana/api/api_generation.py

@@ -337,8 +337,8 @@ async def route_func_body(body: str, files: list[UploadFile] | None = None):  #
                 files_as_bytes = [await file.read() for file in files]
                 getattr(data, file_upload_field.name).set_files(files_as_bytes)
 
-            # We have to do this instead of data.dict() because
-            # data.dict() will convert all nested models to dicts
+            # We have to do this instead of data.model_dump() because
+            # data.model_dump() will convert all nested models to dicts
             # and we want to keep them as pydantic models
             data_dict = {}
             for field_name in data.model_fields:

aana/configs/db.py

@@ -5,7 +5,9 @@
 
 from alembic import command
 from alembic.config import Config
+from pydantic_settings import BaseSettings
 from sqlalchemy import String, TypeDecorator, create_engine
+from sqlalchemy.engine import Engine
 from typing_extensions import TypedDict
 
 from aana.models.pydantic.media_id import MediaId
@@ -57,14 +59,37 @@ class DbType(str, Enum):
     SQLITE = "sqlite"
 
 
-class DBConfig(TypedDict):
+class DbSettings(BaseSettings):
     """Database configuration."""
 
-    datastore_type: DbType | str
-    datastore_config: SQLiteConfig | PostgreSQLConfig
-
-
-def create_database_engine(db_config):
+    datastore_type: DbType | str = DbType.SQLITE
+    datastore_config: SQLiteConfig | PostgreSQLConfig = SQLiteConfig(
+        path="/var/lib/aana_data"
+    )
+    engine: Engine | None = None
+
+    def get_engine(self):
+        """Gets engine. Each instance of DbSettings will create a max.of 1 engine."""
+        if not self.engine:
+            self.engine = _create_database_engine(self)
+        return self.engine
+
+    def __getstate__(self):
+        """Used by pickle to pickle an object."""
+        # We need to remove the "engine" property because SqlAlchemy engines
+        # are not picklable
+        state = self.__dict__.copy()
+        state.pop("engine", None)
+        return state
+
+    def __setstate__(self, state):
+        """Used to restore a runtime object from pickle; the opposite of __getstate__()."""
+        # We don't need to do anything special here, since the engine will be recreated
+        # if needed.
+        self.__dict__.update(state)
+
+
+def _create_database_engine(db_config):
     """Create SQLAlchemy engine based on the provided configuration.
 
     Args:
@@ -73,12 +98,12 @@ def create_database_engine(db_config):
     Returns:
         sqlalchemy.engine.Engine: SQLAlchemy engine instance.
     """
-    db_type = db_config.get("datastore_type", "").lower()
+    db_type = getattr(db_config, "datastore_type", "").lower()
 
     if db_type == DbType.POSTGRESQL:
-        return create_postgresql_engine(db_config["datastore_config"])
+        return create_postgresql_engine(db_config.datastore_config)
     elif db_type == DbType.SQLITE:
-        return create_sqlite_engine(db_config["datastore_config"])
+        return create_sqlite_engine(db_config.datastore_config)
     else:
         raise ValueError(f"Unsupported database type: {db_type}")  # noqa: TRY003
 
@@ -109,9 +134,11 @@ def create_sqlite_engine(config):
     return create_engine(connection_string)
 
 
-def get_alembic_config(app_config, ini_file_path, alembic_data_path) -> Config:
+def get_alembic_config(
+    app_config, ini_file_path: Path, alembic_data_path: Path
+) -> Config:
     """Produces an alembic config to run migrations programmatically."""
-    engine = create_database_engine(app_config.db_config)
+    engine = app_config.db_config.get_engine()
     alembic_config = Config(ini_file_path)
     alembic_config.set_main_option("script_location", str(alembic_data_path))
     config_section = alembic_config.get_section(alembic_config.config_ini_section, {})
@@ -132,7 +159,10 @@ def run_alembic_migrations(settings):
     alembic_data_path = aana_root / "alembic"
 
     alembic_config = get_alembic_config(settings, ini_file_path, alembic_data_path)
-    command.upgrade(alembic_config, "head")
+    engine = settings.db_config.get_engine()
+    with engine.begin() as connection:
+        alembic_config.attributes["connection"] = connection
+        command.upgrade(alembic_config, "head")
 
 
 def drop_all_tables(settings):

aana/configs/pipeline.py

@@ -886,6 +886,26 @@
             }
         ],
     },
+    {
+        "name": "delete_media",
+        "type": "function",
+        "function": "aana.utils.db.delete_media",
+        "dict_output": True,
+        "inputs": [
+            {
+                "name": "media_id",
+                "key": "media_id",
+                "path": "media_id",
+            },
+        ],
+        "outputs": [
+            {
+                "name": "deleted_media_id",
+                "key": "media_id",
+                "path": "deleted_media_id",
+            }
+        ],
+    },
     {
         "name": "save_video",
         "type": "function",
@@ -897,6 +917,11 @@
                 "key": "video",
                 "path": "video.video",
             },
+            {
+                "name": "video_duration",
+                "key": "duration",
+                "path": "video.duration",
+            },
         ],
         "outputs": [
             {
@@ -911,26 +936,6 @@
             },
         ],
     },
-    {
-        "name": "delete_media",
-        "type": "function",
-        "function": "aana.utils.db.delete_media",
-        "dict_output": True,
-        "inputs": [
-            {
-                "name": "media_id",
-                "key": "media_id",
-                "path": "media_id",
-            },
-        ],
-        "outputs": [
-            {
-                "name": "deleted_media_id",
-                "key": "media_id",
-                "path": "deleted_media_id",
-            }
-        ],
-    },
     {
         "name": "save_videos_info",
         "type": "function",

aana/configs/settings.py

@@ -2,7 +2,7 @@
 
 from pydantic_settings import BaseSettings
 
-from aana.configs.db import DBConfig
+from aana.configs.db import DbSettings
 
 
 class TestSettings(BaseSettings):
@@ -23,10 +23,7 @@ class Settings(BaseSettings):
     model_dir: Path = tmp_data_dir / "models"
     num_workers: int = 2
 
-    db_config: DBConfig = {
-        "datastore_type": "sqlite",
-        "datastore_config": {"path": Path("/var/lib/aana_data")},
-    }
+    db_config: DbSettings = DbSettings()
 
     test: TestSettings = TestSettings()
 

aana/models/db/base.py

@@ -1,11 +1,19 @@
-from sqlalchemy import Column, DateTime, func
+from sqlalchemy import Column, DateTime, MetaData, func
 from sqlalchemy.orm import DeclarativeBase
 
 
 class BaseEntity(DeclarativeBase):
     """Base for all ORM classes."""
 
-    pass
+    metadata = MetaData(
+        naming_convention={
+            "ix": "ix_%(column_0_label)s",
+            "uq": "uq_%(table_name)s_%(column_0_name)s",
+            "ck": "ck_%(table_name)s_`%(constraint_name)s`",
+            "fk": "fk_%(table_name)s_%(column_0_name)s_%(referred_table_name)s",
+            "pk": "pk_%(table_name)s",
+        }
+    )
 
 
 class TimeStampEntity:

aana/models/db/caption.py

@@ -3,7 +3,6 @@
 import typing
 
 from sqlalchemy import CheckConstraint, Column, Float, ForeignKey, Integer, String
-from sqlalchemy.orm import relationship
 
 from aana.configs.db import MediaIdSqlType
 from aana.models.db.base import BaseEntity, TimeStampEntity
@@ -37,18 +36,16 @@ class CaptionEntity(BaseEntity, TimeStampEntity):
 
     frame_id = Column(
         Integer,
-        CheckConstraint("frame_id >= 0"),
+        CheckConstraint("frame_id >= 0", "frame_id_positive"),
         comment="The 0-based frame id of video for caption",
     )
     caption = Column(String, comment="Frame caption")
     timestamp = Column(
         Float,
-        CheckConstraint("timestamp >= 0"),
+        CheckConstraint("timestamp >= 0", name="timestamp_positive"),
         comment="Frame timestamp in seconds",
     )
 
-    video = relationship("VideoEntity", back_populates="captions")
-
     @classmethod
     def from_caption_output(
         cls,

aana/models/db/media.py

@@ -1,7 +1,7 @@
 from enum import Enum
 
 from sqlalchemy import Column, ForeignKey, Integer, String
-from sqlalchemy.orm import relationship
+from sqlalchemy.orm import backref, relationship
 
 from aana.configs.db import MediaIdSqlType
 from aana.models.db.base import BaseEntity, TimeStampEntity
@@ -21,15 +21,16 @@ class MediaEntity(BaseEntity, TimeStampEntity):
     media_type = Column(String, comment="The type of media")
     video_id = Column(
         Integer,
-        ForeignKey("video.id"),
+        ForeignKey("video.id", ondelete="CASCADE"),
         nullable=True,
         comment="If media_type is `video`, the id of the video this entry represents.",
     )
 
     video = relationship(
         "VideoEntity",
-        back_populates="media",
+        backref=backref("media", passive_deletes=True, uselist=False),
         cascade="all, delete",
         uselist=False,
+        post_update=True,
         foreign_keys=[video_id],
     )

aana/models/db/transcript.py

@@ -3,7 +3,6 @@
 from typing import TYPE_CHECKING
 
 from sqlalchemy import JSON, CheckConstraint, Column, Float, ForeignKey, Integer, String
-from sqlalchemy.orm import relationship
 
 from aana.configs.db import MediaIdSqlType
 from aana.models.db.base import BaseEntity, TimeStampEntity
@@ -45,12 +44,12 @@ class TranscriptEntity(BaseEntity, TimeStampEntity):
     )
     language_confidence = Column(
         Float,
-        CheckConstraint("0 <= language_confidence <= 1"),
+        CheckConstraint(
+            "0 <= language_confidence <= 1", name="language_confidence_value_range"
+        ),
         comment="Confidence score of language prediction",
     )
 
-    video = relationship("VideoEntity", back_populates="transcripts")
-
     @classmethod
     def from_asr_output(
         cls,