feat: add music licensing challenge backend example #114
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WalkthroughThis change introduces a comprehensive backend for a music licensing workflow application, located in the Changes
Sequence Diagram(s)sequenceDiagram
participant Client
participant FastAPI
participant DB
participant GraphQL
participant PubSub
Client->>FastAPI: REST /api/movies or /api/scenes
FastAPI->>DB: Query movies/scenes via repositories
DB-->>FastAPI: Movie/Scene data
FastAPI-->>Client: JSON response
Client->>GraphQL: Query/Mutation/Subscription
GraphQL->>DB: Fetch or update data via repositories
DB-->>GraphQL: Data/result
GraphQL-->>Client: GraphQL response
GraphQL->>PubSub: On mutation, trigger subscription event
PubSub-->>GraphQL: Push update to subscribers
GraphQL-->>Client: Real-time update via subscription
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Actionable comments posted: 22
🔭 Outside diff range comments (2)
examples/music-licensing-challenge/src/app/graphql/pubsub.py (1)
1-11: 🛠️ Refactor suggestionEnhance pubsub module with type annotations and error handling
The module implements a simple asyncio-based pub/sub mechanism for song updates. While the basic functionality is sound, there are a few improvements that would make it more robust:
import asyncio from .types.song import Song song_update_queue: asyncio.Queue[Song] = asyncio.Queue() -async def trigger_license_change_subscription(song_model): - song = Song.from_model(song_model) - await song_update_queue.put(song) +async def trigger_license_change_subscription(song_model: "SongModel"): + """ + Convert a song ORM model to a GraphQL type and publish it to the song update queue. + + Args: + song_model: The song ORM model that was updated + """ + try: + song = Song.from_model(song_model) + await song_update_queue.put(song) + except Exception as e: + # Log the error but don't re-raise to prevent subscription failures + # from affecting the main application flow + print(f"Error in trigger_license_change_subscription: {e}")Consider adding proper imports for the SongModel type from your models directory. Also, you might want to use a proper logging mechanism instead of print for error handling in a production environment.
examples/music-licensing-challenge/src/app/repository/scenes.py (1)
22-31:⚠️ Potential issueFix type annotation mismatch
There's a type annotation discrepancy that could lead to runtime errors.
- def get_scene_by_id_with_details(self, scene_id: str) -> Scene | None: + def get_scene_by_id_with_details(self, scene_id: int) -> Scene | None: result = self.db.execute( select(Scene) .where(Scene.id == scene_id) .options( selectinload(Scene.tracks).subqueryload(Track.songs), ) ) return result.unique().scalar_one_or_none()The Scene model uses an Integer primary key (based on the provided model definition) but the method expects a string. This mismatch could cause type conversion errors when querying the database.
Additionally, the return type annotation uses Python 3.10+ syntax (
|). For better compatibility, consider using:from typing import Optional # ... def get_scene_by_id_with_details(self, scene_id: int) -> Optional[Scene]:
🧹 Nitpick comments (36)
examples/music-licensing-challenge/src/app/models/database.py (1)
1-3: Consider updating import to modern SQLAlchemy API
Thesqlalchemy.ext.declarative.declarative_baseimport is deprecated in SQLAlchemy 2.x. To ensure forward compatibility, importdeclarative_basefromsqlalchemy.orminstead:-from sqlalchemy.ext.declarative import declarative_base +from sqlalchemy.orm import declarative_baseexamples/music-licensing-challenge/env.example (1)
1-1: Add trailing newline for POSIX compliance
Best practice is to end text files with a newline. Please add a newline character at the end of this file.examples/music-licensing-challenge/src/app/models/genre.py (2)
7-7: Remove unnecessary empty lineThis empty line is not needed since there's already an empty line above it.
8-16: Add docstring to describe the model's purposeThe
Genremodel is well-structured with appropriate fields and relationships, but would benefit from a docstring explaining its role in the music licensing domain.Also consider adding constraints to the
namefield, such as a maximum length.class Genre(Base): + """Represents a music genre that can be associated with movies.""" __tablename__ = "genres" id = Column(Integer, primary_key=True, index=True) - name = Column(String, unique=True, index=True) + name = Column(String(100), unique=True, index=True) movies = relationship( "Movie", secondary=movie_genres_table, back_populates="genres" )examples/music-licensing-challenge/src/app/main.py (2)
22-23: Remove extra empty lineThere's an unnecessary extra blank line here.
23-25: Consider adding health check endpointThe root endpoint is a good start, but consider adding a dedicated health check endpoint that could be used by container orchestration systems to verify the service's health.
@app.get("/") async def root(): return {"message": "Welcome to Music Licensing API"} + +@app.get("/health") +async def health_check(): + return {"status": "healthy", "version": "1.0.0"}examples/music-licensing-challenge/src/app/db/database.py (2)
10-11: Consider adding connection pool configurationThe SQLAlchemy engine initialization lacks specific pool configuration, which is important for managing database connections efficiently in a production environment.
-engine = create_engine(SQLALCHEMY_DATABASE_URL, future=True) +engine = create_engine( + SQLALCHEMY_DATABASE_URL, + future=True, + pool_size=5, + max_overflow=10, + pool_timeout=30, + pool_recycle=1800, +)
13-13: Remove unnecessary empty lineThere's an extra empty line that can be removed.
examples/music-licensing-challenge/src/app/graphql/subscriptions.py (1)
9-15: GraphQL subscription implementation is good, but consider adding error handling.The implementation correctly uses an async generator for the
license_changedsubscription, which continuously yields updated songs from the queue. This pattern works well for real-time updates.Consider enhancing the implementation with:
- Error handling to prevent subscription termination on exceptions
- A mechanism to break the loop when clients disconnect
@strawberry.subscription async def license_changed(self) -> AsyncGenerator[Song, None]: - while True: - song = await song_update_queue.get() - yield song + try: + while True: + song = await song_update_queue.get() + yield song + except Exception as e: + # Log the error but don't propagate it + print(f"Subscription error: {e}") + # Optionally re-raise if needed + # raiseexamples/music-licensing-challenge/src/app/repository/licenses.py (1)
9-18: Clean repository implementation with type annotations.The
LicenseRepositorycorrectly implements the repository pattern and uses modern SQLAlchemy 2.0-style queries with appropriate type hints. The method is well-documented and retrieves data efficiently usingunique().scalars().all().For a more complete repository, consider adding methods for:
- Retrieving a single license status by ID
- Creating/updating license statuses
- Finding license statuses by name
examples/music-licensing-challenge/src/app/models/licenses.py (1)
7-11: This model looks good, consider adding a docstring.The
LicenseStatusmodel is well structured with appropriate column constraints and relationship definition. Adding a docstring would improve maintainability by explaining the purpose of this model in the licensing workflow.class LicenseStatus(Base): + """ + Represents license status categories that can be assigned to songs. + Used to track the licensing state of songs in the music library. + """ __tablename__ = "license_statuses" id = Column(Integer, primary_key=True, index=True) name = Column(String, unique=True, nullable=False) songs = relationship("Song", back_populates="license_status")examples/music-licensing-challenge/src/app/graphql/types/scene.py (1)
8-14: TheScenetype looks good, but the ID types should be consistent.The GraphQL type defines
idandmovie_idas strings, but the underlying SQLAlchemy model uses integers for these fields. This type conversion should be explicit and consistent.Consider adding a docstring to clarify the purpose of this GraphQL type.
@strawberry.type class Scene: + """ + GraphQL type for scenes in a movie, including associated tracks. + Maps from the Scene SQLAlchemy model with type conversions as needed. + """ id: str movie_id: str scene_number: int description: str tracks: List[Track]examples/music-licensing-challenge/src/app/api/scenes.py (1)
9-10: Add a docstring to describe the router's purpose.Adding a docstring would improve maintainability by explaining the purpose of this router in the API.
router = APIRouter() +""" +Router for scene-related endpoints, allowing clients to retrieve scene details +with associated tracks and songs. +"""examples/music-licensing-challenge/requirements.txt (1)
1-10: Dependencies look well organized with pinned versions.The requirements file contains all the necessary dependencies for the music licensing backend, with specific versions pinned for reproducibility. Consider adding a header comment to provide context for this file.
+# Requirements for the music licensing challenge backend +# Includes dependencies for FastAPI, GraphQL, SQLAlchemy, and WebSocket support fastapi==0.104.1 uvicorn==0.24.0 sqlalchemy==2.0.23 psycopg2-binary==2.9.9 python-dotenv==1.0.0 pydantic==2.5.2 python-multipart==0.0.6 alembic==1.12.1 strawberry-graphql==0.208.0 websockets==11.0.3It's good practice to regularly update dependencies for security patches. Consider implementing a dependency scanning process.
examples/music-licensing-challenge/src/app/models/track.py (1)
1-16: Add docstring and ensure file ends with newlineThe
Trackmodel implementation looks correct, but would benefit from a docstring explaining its purpose and relationships within the music licensing domain.Also, consider adding an index to the
scene_idforeign key for better query performance since it will likely be frequently used in joins.class Track(Base): + """Represents a track in a scene that can contain multiple songs. + + Tracks are associated with exactly one scene and can have multiple songs through + a many-to-many relationship. + """ __tablename__ = "tracks" id = Column(Integer, primary_key=True, index=True) - scene_id = Column(Integer, ForeignKey("scenes.id")) + scene_id = Column(Integer, ForeignKey("scenes.id"), index=True) track_type = Column(String, nullable=True)examples/music-licensing-challenge/docker-compose.yml (2)
10-12: Add health check and restart policyAdd a health check for the database dependency and a restart policy to ensure the services recover from failures.
depends_on: - - db + db: + condition: service_healthy + restart: unless-stoppedAnd add the following to the
dbservice:volumes: - postgres_data:/var/lib/postgresql/data + healthcheck: + test: ["CMD-SHELL", "pg_isready -U postgres"] + interval: 5s + timeout: 5s + retries: 5 + restart: unless-stopped
26-27: Add newline at end of fileAdd a newline character at the end of the file to comply with YAML best practices.
volumes: postgres_data: +🧰 Tools
🪛 YAMLlint (1.35.1)
[error] 27-27: no new line character at the end of file
(new-line-at-end-of-file)
examples/music-licensing-challenge/src/app/models/scene.py (1)
7-16: Add docstring and consider indexing foreign keyThe
Scenemodel implementation is correct but would benefit from a docstring explaining its purpose and relationships in the domain model.Also, add an index to the
movie_idforeign key for better join performance.class Scene(Base): + """Represents a scene within a movie. + + A scene belongs to exactly one movie and can have multiple tracks, + which are deleted when the scene is deleted. + """ __tablename__ = "scenes" id = Column(Integer, primary_key=True, index=True) - movie_id = Column(Integer, ForeignKey("movies.id")) + movie_id = Column(Integer, ForeignKey("movies.id"), index=True) scene_number = Column(Integer) description = Column(String, nullable=True)examples/music-licensing-challenge/src/app/graphql/types/track.py (1)
11-13: Consider making track_type optional to match database modelSince
track_typeis nullable in the database model, it should be optional in the GraphQL type as well.from typing import List +from typing import Optional import strawberry from ...models.track import Track as TrackModel from .song import Song @strawberry.type class Track: id: str - track_type: str + track_type: Optional[str] = None songs: List[Song]examples/music-licensing-challenge/src/app/graphql/mutations.py (1)
13-28: Add docstring for better documentationAdding a docstring would improve code maintainability by clearly documenting the purpose and behavior of this mutation.
@type class Mutations: @mutation + """ + Updates a song's license status and triggers a real-time notification. + + Args: + id: The unique identifier of the song to update + license_status: The new license status to set (optional) + + Returns: + The updated song or None if the song was not found + """ async def update_song( self, id: ID, license_status: Optional[LicenseStatusEnum] = None, ) -> Optional[Song]:examples/music-licensing-challenge/src/app/models/song.py (3)
14-16: Consider adding a default license statusThe
license_status_idfield is defined as non-nullable but doesn't have a default value. This might cause insertion issues if a song is created without explicitly setting a license status.Consider adding a default license status ID or modify the schema to allow null values if appropriate for your business logic.
11-13: Add constraints to title and artist fieldsThe
titleandartistfields are defined as nullable, but typically these would be required for a song. Consider adding constraints to ensure data quality.- title = Column(String, nullable=True) - artist = Column(String, nullable=True) + title = Column(String, nullable=False) + artist = Column(String, nullable=True, index=True)
8-19: Add database constraints and documentationThe Song model could benefit from additional database constraints and documentation to improve data integrity and code maintainability.
class Song(Base): + """SQLAlchemy model for songs that can be licensed for movie scenes.""" __tablename__ = "songs" id = Column(Integer, primary_key=True, index=True) title = Column(String, nullable=True) artist = Column(String, nullable=True) license_status_id = Column( Integer, ForeignKey("license_statuses.id"), nullable=False ) + # Add uniqueness constraint to prevent duplicate songs + __table_args__ = ( + UniqueConstraint('title', 'artist', name='uix_song_title_artist'), + ) tracks = relationship("Track", secondary=track_songs_table, back_populates="songs") license_status = relationship("LicenseStatus", back_populates="songs")Note: You'll need to add
from sqlalchemy import UniqueConstraintto the imports at the top of the file.examples/music-licensing-challenge/src/app/api/movies.py (1)
1-24: Add error handling and documentation to the endpointThe endpoint would benefit from additional error handling for database exceptions and better documentation.
@router.get("/", response_model=List[MovieWithAllData] | MovieWithAllData) +""" +Retrieve movies from the database. + +Args: + id: Optional movie ID to retrieve a specific movie + db: Database session dependency + +Returns: + List of movies or a single movie with all related data + +Raises: + HTTPException: If the requested movie is not found +""" def read_movies( id: Optional[str] = None, db: Session = Depends(get_db), ): try: if id is None: movies = MovieRepository(db) return movies.get_all_movies_with_details() else: movie = db.query(Movie).filter(Movie.id == id).first() if movie is None: raise HTTPException(status_code=404, detail="Movie not found") return movie + except Exception as e: + raise HTTPException(status_code=500, detail=f"Database error: {str(e)}")🧰 Tools
🪛 Ruff (0.8.2)
15-15: Do not perform function call
Dependsin argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable(B008)
examples/music-licensing-challenge/src/app/graphql/types/movie.py (1)
10-20: Add documentation and consider nullable fieldsThe Movie GraphQL type is well-structured and includes all necessary fields from the ORM model.
Consider adding docstrings and marking fields that could be None as Optional based on the ORM model definition:
@strawberry.type class Movie: + """GraphQL type for Movie entities with related genres and scenes.""" id: str title: str year: int - director: str - description: str - poster: str + director: Optional[str] + description: Optional[str] + poster: Optional[str] genres: List[Genre] scenes: List[Scene]You'll need to add
from typing import Optionalto the imports at the top of the file.examples/music-licensing-challenge/src/app/schemas/songs.py (1)
24-35: Consider adding a docstring for the Song modelThe Song Pydantic model is well-structured with proper field types and aliases.
Consider adding a docstring to improve code documentation:
class Song(BaseModel): + """ + Pydantic model for Song entities. + + Used for serialization/deserialization in REST API responses/requests. + """ model_config = ConfigDict( populate_by_name=True, ) id: int = Field(...) title: str = Field(...) artist: Optional[str] = Field(None) license_status: Optional[LicenseStatus] = Field( None, alias="licenseStatus", )examples/music-licensing-challenge/src/app/repository/scenes.py (1)
10-13: Add documentation to the repository classThe repository class structure is good, but adding documentation would help developers understand its purpose.
class SceneRepository: + """ + Repository class for Scene entities. + + Provides methods to retrieve scene data with related entities + optimized for GraphQL and REST API responses. + """ def __init__(self, db: Session): self.db = dbexamples/music-licensing-challenge/src/app/repository/songs.py (1)
10-16: Consider adding a docstring to get_song_by_id method.The method functionality is clear, but adding a docstring would improve code documentation consistency, especially since other repository methods have docstrings.
def get_song_by_id(self, song_id: str) -> Optional[Song]: + """ + Retrieves a song by its ID. + + Args: + song_id: The ID of the song to retrieve + + Returns: + The found Song object or None if not found + """ return self.db.query(Song).filter(Song.id == song_id).first()examples/music-licensing-challenge/src/app/repository/movies.py (1)
29-43: Consider adding a comment explaining the loading strategy choice.The method uses a complex combination of
joinedload,selectinload, andsubqueryload. A brief comment explaining why this specific combination was chosen would be helpful for future maintainers.def get_movie_by_id_with_details(self, movie_id: str) -> Movie | None: """ Retrieves a specific movie by ID with all its associated details. """ + # Using joinedload for genres (many-to-many) and selectinload+subqueryload + # for the deeper scene->track->song relationships to optimize query performance + # and reduce N+1 query issues result = self.db.execute( select(Movie) .where(Movie.id == movie_id) .options( joinedload(Movie.genres), selectinload(Movie.scenes) .subqueryload(Scene.tracks) .subqueryload(Track.songs), ) ) return result.unique().scalar_one_or_none()examples/music-licensing-challenge/src/app/schemas/movies.py (2)
27-33: Remove redundant model_config in MovieWithAllData.Since MovieWithAllData inherits from MovieBase, it already inherits the model_config. The duplicate definition is unnecessary.
class MovieWithAllData(MovieBase): - model_config = ConfigDict( - populate_by_name=True, - ) id: str = Field(...) genres: List[Genre] = Field(...) scenes: List[Scene] = Field(...)
27-33: Consider adding from_orm method for easier ORM model conversion.Adding a from_orm class method would simplify conversion from SQLAlchemy ORM models to these Pydantic models.
class MovieWithAllData(MovieBase): model_config = ConfigDict( populate_by_name=True, + from_attributes=True, ) id: str = Field(...) genres: List[Genre] = Field(...) scenes: List[Scene] = Field(...) + + @classmethod + def from_orm(cls, db_obj): + """Create a Pydantic model instance from a database ORM model.""" + return cls( + id=db_obj.id, + title=db_obj.title, + year=db_obj.year, + director=db_obj.director, + description=db_obj.description, + poster=db_obj.poster, + genres=[Genre(id=g.id, name=g.name) for g in db_obj.genres], + scenes=[Scene.from_orm(s) for s in db_obj.scenes] + )examples/music-licensing-challenge/src/app/graphql/queries.py (1)
42-46: Consider renaming method toall_license_statusesfor grammatical correctnessThe method name
all_license_statususes a singular noun "status" when returning a list. For consistency with other query methods and grammatical correctness, consider using the plural formall_license_statuses.- def all_license_status(self) -> List[LicenseStatus]: + def all_license_statuses(self) -> List[LicenseStatus]:examples/music-licensing-challenge/src/app/graphql/types/song.py (1)
10-11: Field name inconsistency between GraphQL and database modelThe field is named
statusin the GraphQL type butnamein the database model (as seen in thefrom_modelmethod). Consider using the same field name across both for consistency.- status: str + name: strThen update the from_model method accordingly:
- def from_model(cls, model): - return cls(id=model.id, status=model.name) + def from_model(cls, model): + return cls(id=model.id, name=model.name)examples/music-licensing-challenge/src/app/schemas/scenes.py (1)
20-47: Consider consolidating Scene and SceneWithAllData modelsThere seems to be potential redundancy between
SceneandSceneWithAllDataclasses. They share several fields and it's unclear what their specific use cases are. Consider consolidating them for better maintainability or add comments explaining their distinct purposes.If they serve different API endpoints with different data requirements, consider adding comments to clarify their usage:
class Scene(BaseModel): + # Used for basic scene representation in API responses model_config = ConfigDict( populate_by_name=True, ) # ... class SceneWithAllData(SceneBase): + # Used for detailed scene representation including nested data model_config = ConfigDict( populate_by_name=True, ) # ...examples/music-licensing-challenge/README.md (2)
82-82: Fix formatting in GraphQL query documentationThere's a spacing issue in the formatting of the
songquery.-- song(id: ID!): Song +- song(id: ID!): Song
1-91: Add security and error handling sections to READMEThe README lacks information about authentication/authorization mechanisms and error handling strategies. These are important aspects for developers integrating with the API.
Consider adding sections such as:
## Authentication & Authorization [Describe your auth mechanism here, such as JWT tokens, API keys, etc.] ## Error Handling The API uses standard HTTP status codes and returns errors in the following format: ```json { "error": "Error message", "status_code": 400, "details": {...} }For GraphQL errors, they follow the standard GraphQL error format:
{ "errors": [ { "message": "Error message", "path": ["field1", "field2"], "extensions": {"code": "ERROR_CODE"} } ] }<details> <summary>🧰 Tools</summary> <details> <summary>🪛 LanguageTool</summary> [style] ~86-~86: Using many exclamation marks might seem excessive (in this case: 10 exclamation marks for a text that’s 2101 characters long) Context: ...ong #### Mutations - updateSong(id: ID!, licenseStatus: LicenseStatusEnum = nul... (EN_EXCESSIVE_EXCLAMATION) </details> </details> </blockquote></details> </blockquote></details> <details> <summary>📜 Review details</summary> **Configuration used: CodeRabbit UI** **Review profile: CHILL** **Plan: Pro** <details> <summary>📥 Commits</summary> Reviewing files that changed from the base of the PR and between 7fb09d8a392afb413db4c9e5e05d5f76f1ae04d2 and 6f36ad79dacc41f7deba38e9f5b31446c2eb4f58. </details> <details> <summary>⛔ Files ignored due to path filters (1)</summary> * `examples/music-licensing-challenge/Pipfile.lock` is excluded by `!**/*.lock` </details> <details> <summary>📒 Files selected for processing (37)</summary> * `examples/music-licensing-challenge/Dockerfile` (1 hunks) * `examples/music-licensing-challenge/Pipfile` (1 hunks) * `examples/music-licensing-challenge/README.md` (1 hunks) * `examples/music-licensing-challenge/docker-compose.yml` (1 hunks) * `examples/music-licensing-challenge/env.example` (1 hunks) * `examples/music-licensing-challenge/requirements.txt` (1 hunks) * `examples/music-licensing-challenge/src/app/api/__init__.py` (1 hunks) * `examples/music-licensing-challenge/src/app/api/graphql.py` (1 hunks) * `examples/music-licensing-challenge/src/app/api/movies.py` (1 hunks) * `examples/music-licensing-challenge/src/app/api/scenes.py` (1 hunks) * `examples/music-licensing-challenge/src/app/db/database.py` (1 hunks) * `examples/music-licensing-challenge/src/app/graphql/mutations.py` (1 hunks) * `examples/music-licensing-challenge/src/app/graphql/pubsub.py` (1 hunks) * `examples/music-licensing-challenge/src/app/graphql/queries.py` (1 hunks) * `examples/music-licensing-challenge/src/app/graphql/schema.py` (1 hunks) * `examples/music-licensing-challenge/src/app/graphql/subscriptions.py` (1 hunks) * `examples/music-licensing-challenge/src/app/graphql/types/genre.py` (1 hunks) * `examples/music-licensing-challenge/src/app/graphql/types/movie.py` (1 hunks) * `examples/music-licensing-challenge/src/app/graphql/types/scene.py` (1 hunks) * `examples/music-licensing-challenge/src/app/graphql/types/song.py` (1 hunks) * `examples/music-licensing-challenge/src/app/graphql/types/track.py` (1 hunks) * `examples/music-licensing-challenge/src/app/main.py` (1 hunks) * `examples/music-licensing-challenge/src/app/models/associations.py` (1 hunks) * `examples/music-licensing-challenge/src/app/models/database.py` (1 hunks) * `examples/music-licensing-challenge/src/app/models/genre.py` (1 hunks) * `examples/music-licensing-challenge/src/app/models/licenses.py` (1 hunks) * `examples/music-licensing-challenge/src/app/models/movie.py` (1 hunks) * `examples/music-licensing-challenge/src/app/models/scene.py` (1 hunks) * `examples/music-licensing-challenge/src/app/models/song.py` (1 hunks) * `examples/music-licensing-challenge/src/app/models/track.py` (1 hunks) * `examples/music-licensing-challenge/src/app/repository/licenses.py` (1 hunks) * `examples/music-licensing-challenge/src/app/repository/movies.py` (1 hunks) * `examples/music-licensing-challenge/src/app/repository/scenes.py` (1 hunks) * `examples/music-licensing-challenge/src/app/repository/songs.py` (1 hunks) * `examples/music-licensing-challenge/src/app/schemas/movies.py` (1 hunks) * `examples/music-licensing-challenge/src/app/schemas/scenes.py` (1 hunks) * `examples/music-licensing-challenge/src/app/schemas/songs.py` (1 hunks) </details> <details> <summary>🧰 Additional context used</summary> <details> <summary>🧬 Code Graph Analysis (18)</summary> <details> <summary>examples/music-licensing-challenge/src/app/graphql/schema.py (3)</summary><blockquote> <details> <summary>examples/music-licensing-challenge/src/app/graphql/mutations.py (1)</summary> * `Mutations` (14-28) </details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/queries.py (1)</summary> * `Query` (17-52) </details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/subscriptions.py (1)</summary> * `Subscription` (10-15) </details> </blockquote></details> <details> <summary>examples/music-licensing-challenge/src/app/models/genre.py (2)</summary><blockquote> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/genre.py (1)</summary> * `Genre` (7-16) </details> <details> <summary>examples/music-licensing-challenge/src/app/schemas/movies.py (1)</summary> * `Genre` (8-13) </details> </blockquote></details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/genre.py (4)</summary><blockquote> <details> <summary>examples/music-licensing-challenge/src/app/models/genre.py (1)</summary> * `Genre` (8-16) </details> <details> <summary>examples/music-licensing-challenge/src/app/schemas/movies.py (1)</summary> * `Genre` (8-13) </details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/movie.py (1)</summary> * `from_model` (22-32) </details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/track.py (1)</summary> * `from_model` (16-21) </details> </blockquote></details> <details> <summary>examples/music-licensing-challenge/src/app/repository/movies.py (7)</summary><blockquote> <details> <summary>examples/music-licensing-challenge/src/app/graphql/queries.py (2)</summary> * `movie` (25-28) * `scene` (31-34) </details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/movie.py (1)</summary> * `Movie` (11-32) </details> <details> <summary>examples/music-licensing-challenge/src/app/models/movie.py (1)</summary> * `Movie` (8-21) </details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/scene.py (1)</summary> * `Scene` (9-24) </details> <details> <summary>examples/music-licensing-challenge/src/app/models/scene.py (1)</summary> * `Scene` (7-16) </details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/track.py (1)</summary> * `Track` (10-21) </details> <details> <summary>examples/music-licensing-challenge/src/app/models/track.py (1)</summary> * `Track` (8-16) </details> </blockquote></details> <details> <summary>examples/music-licensing-challenge/src/app/repository/songs.py (6)</summary><blockquote> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/song.py (2)</summary> * `LicenseStatus` (9-15) * `Song` (19-32) </details> <details> <summary>examples/music-licensing-challenge/src/app/models/licenses.py (1)</summary> * `LicenseStatus` (7-11) </details> <details> <summary>examples/music-licensing-challenge/src/app/schemas/songs.py (3)</summary> * `LicenseStatus` (15-21) * `Song` (24-34) * `LicenseStatusEnum` (9-12) </details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/queries.py (1)</summary> * `song` (49-52) </details> <details> <summary>examples/music-licensing-challenge/src/app/models/song.py (1)</summary> * `Song` (8-19) </details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/mutations.py (1)</summary> * `update_song` (16-28) </details> </blockquote></details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/scene.py (5)</summary><blockquote> <details> <summary>examples/music-licensing-challenge/src/app/graphql/queries.py (1)</summary> * `scene` (31-34) </details> <details> <summary>examples/music-licensing-challenge/src/app/models/scene.py (1)</summary> * `Scene` (7-16) </details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/track.py (2)</summary> * `Track` (10-21) * `from_model` (16-21) </details> <details> <summary>examples/music-licensing-challenge/src/app/models/track.py (1)</summary> * `Track` (8-16) </details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/song.py (2)</summary> * `from_model` (14-15) * `from_model` (26-32) </details> </blockquote></details> <details> <summary>examples/music-licensing-challenge/src/app/api/movies.py (4)</summary><blockquote> <details> <summary>examples/music-licensing-challenge/src/app/db/database.py (1)</summary> * `get_db` (14-19) </details> <details> <summary>examples/music-licensing-challenge/src/app/models/movie.py (1)</summary> * `Movie` (8-21) </details> <details> <summary>examples/music-licensing-challenge/src/app/schemas/movies.py (1)</summary> * `MovieWithAllData` (27-33) </details> <details> <summary>examples/music-licensing-challenge/src/app/repository/movies.py (2)</summary> * `MovieRepository` (11-43) * `get_all_movies_with_details` (15-27) </details> </blockquote></details> <details> <summary>examples/music-licensing-challenge/src/app/models/song.py (2)</summary><blockquote> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/song.py (1)</summary> * `Song` (19-32) </details> <details> <summary>examples/music-licensing-challenge/src/app/schemas/songs.py (1)</summary> * `Song` (24-34) </details> </blockquote></details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/movie.py (4)</summary><blockquote> <details> <summary>examples/music-licensing-challenge/src/app/models/movie.py (1)</summary> * `Movie` (8-21) </details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/genre.py (2)</summary> * `Genre` (7-16) * `from_model` (12-16) </details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/scene.py (2)</summary> * `Scene` (9-24) * `from_model` (17-24) </details> <details> <summary>examples/music-licensing-challenge/src/app/models/scene.py (1)</summary> * `Scene` (7-16) </details> </blockquote></details> <details> <summary>examples/music-licensing-challenge/src/app/repository/scenes.py (6)</summary><blockquote> <details> <summary>examples/music-licensing-challenge/src/app/graphql/queries.py (1)</summary> * `scene` (31-34) </details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/scene.py (1)</summary> * `Scene` (9-24) </details> <details> <summary>examples/music-licensing-challenge/src/app/models/scene.py (1)</summary> * `Scene` (7-16) </details> <details> <summary>examples/music-licensing-challenge/src/app/schemas/scenes.py (2)</summary> * `Scene` (20-30) * `Track` (8-17) </details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/track.py (1)</summary> * `Track` (10-21) </details> <details> <summary>examples/music-licensing-challenge/src/app/models/track.py (1)</summary> * `Track` (8-16) </details> </blockquote></details> <details> <summary>examples/music-licensing-challenge/src/app/api/scenes.py (4)</summary><blockquote> <details> <summary>examples/music-licensing-challenge/src/app/db/database.py (1)</summary> * `get_db` (14-19) </details> <details> <summary>examples/music-licensing-challenge/src/app/models/scene.py (1)</summary> * `Scene` (7-16) </details> <details> <summary>examples/music-licensing-challenge/src/app/schemas/scenes.py (2)</summary> * `Scene` (20-30) * `SceneWithAllData` (42-47) </details> <details> <summary>examples/music-licensing-challenge/src/app/repository/scenes.py (2)</summary> * `SceneRepository` (10-30) * `get_all_scenes_with_details` (14-20) </details> </blockquote></details> <details> <summary>examples/music-licensing-challenge/src/app/models/licenses.py (2)</summary><blockquote> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/song.py (1)</summary> * `LicenseStatus` (9-15) </details> <details> <summary>examples/music-licensing-challenge/src/app/schemas/songs.py (1)</summary> * `LicenseStatus` (15-21) </details> </blockquote></details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/track.py (3)</summary><blockquote> <details> <summary>examples/music-licensing-challenge/src/app/models/track.py (1)</summary> * `Track` (8-16) </details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/song.py (3)</summary> * `Song` (19-32) * `from_model` (14-15) * `from_model` (26-32) </details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/scene.py (1)</summary> * `from_model` (17-24) </details> </blockquote></details> <details> <summary>examples/music-licensing-challenge/src/app/schemas/songs.py (3)</summary><blockquote> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/song.py (2)</summary> * `LicenseStatus` (9-15) * `Song` (19-32) </details> <details> <summary>examples/music-licensing-challenge/src/app/models/licenses.py (1)</summary> * `LicenseStatus` (7-11) </details> <details> <summary>examples/music-licensing-challenge/src/app/models/song.py (1)</summary> * `Song` (8-19) </details> </blockquote></details> <details> <summary>examples/music-licensing-challenge/src/app/models/movie.py (1)</summary><blockquote> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/movie.py (1)</summary> * `Movie` (11-32) </details> </blockquote></details> <details> <summary>examples/music-licensing-challenge/src/app/schemas/movies.py (4)</summary><blockquote> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/scene.py (1)</summary> * `Scene` (9-24) </details> <details> <summary>examples/music-licensing-challenge/src/app/schemas/scenes.py (1)</summary> * `Scene` (20-30) </details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/genre.py (1)</summary> * `Genre` (7-16) </details> <details> <summary>examples/music-licensing-challenge/src/app/models/genre.py (1)</summary> * `Genre` (8-16) </details> </blockquote></details> <details> <summary>examples/music-licensing-challenge/src/app/repository/licenses.py (3)</summary><blockquote> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/song.py (1)</summary> * `LicenseStatus` (9-15) </details> <details> <summary>examples/music-licensing-challenge/src/app/models/licenses.py (1)</summary> * `LicenseStatus` (7-11) </details> <details> <summary>examples/music-licensing-challenge/src/app/schemas/songs.py (1)</summary> * `LicenseStatus` (15-21) </details> </blockquote></details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/song.py (5)</summary><blockquote> <details> <summary>examples/music-licensing-challenge/src/app/graphql/queries.py (1)</summary> * `song` (49-52) </details> <details> <summary>examples/music-licensing-challenge/src/app/models/song.py (1)</summary> * `Song` (8-19) </details> <details> <summary>examples/music-licensing-challenge/src/app/schemas/songs.py (2)</summary> * `Song` (24-34) * `LicenseStatus` (15-21) </details> <details> <summary>examples/music-licensing-challenge/src/app/models/licenses.py (1)</summary> * `LicenseStatus` (7-11) </details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/types/track.py (1)</summary> * `from_model` (16-21) </details> </blockquote></details> </details><details> <summary>🪛 YAMLlint (1.35.1)</summary> <details> <summary>examples/music-licensing-challenge/docker-compose.yml</summary> [error] 27-27: no new line character at the end of file (new-line-at-end-of-file) </details> </details> <details> <summary>🪛 Ruff (0.8.2)</summary> <details> <summary>examples/music-licensing-challenge/src/app/api/movies.py</summary> 15-15: Do not perform function call `Depends` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable (B008) </details> <details> <summary>examples/music-licensing-challenge/src/app/api/scenes.py</summary> 15-15: Do not perform function call `Depends` in argument defaults; instead, perform the call within the function, or read the default from a module-level singleton variable (B008) </details> </details> <details> <summary>🪛 LanguageTool</summary> <details> <summary>examples/music-licensing-challenge/README.md</summary> [style] ~86-~86: Using many exclamation marks might seem excessive (in this case: 10 exclamation marks for a text that’s 2101 characters long) Context: ...ong #### Mutations - updateSong(id: ID!, licenseStatus: LicenseStatusEnum = nul... (EN_EXCESSIVE_EXCLAMATION) </details> </details> </details> <details> <summary>⏰ Context from checks skipped due to timeout of 90000ms (1)</summary> * GitHub Check: Lint Code Base </details> <details> <summary>🔇 Additional comments (23)</summary><blockquote> <details> <summary>examples/music-licensing-challenge/src/app/models/associations.py (1)</summary> `1-17`: **Association tables look correct** The many-to-many tables for `movie_genres` and `track_songs` properly use `Base.metadata`, composite primary keys, and matching foreign key types. No issues detected. </details> <details> <summary>examples/music-licensing-challenge/src/app/graphql/schema.py (1)</summary> `1-7`: **GraphQL schema initialization is correct** The `strawberry.Schema` combines `Query`, `Mutations`, and `Subscription` as intended. The parameters and imports align with Strawberry’s API. </details> <details> <summary>examples/music-licensing-challenge/src/app/api/graphql.py (1)</summary> `1-4`: **GraphQL router setup is valid** Instantiating `GraphQLRouter(schema)` correctly mounts the Strawberry schema into FastAPI. No issues detected. </details> <details> <summary>examples/music-licensing-challenge/src/app/models/genre.py (1)</summary> `1-6`: **Code organization looks good** The imports and module organization follow good practices, importing necessary SQLAlchemy components and related modules. </details> <details> <summary>examples/music-licensing-challenge/src/app/main.py (3)</summary> `1-11`: **Good FastAPI app setup with clear metadata** The FastAPI application is properly initialized with informative metadata that will be visible in the auto-generated documentation. --- `12-18`: **Security concern: Overly permissive CORS configuration** The current CORS configuration allows requests from any origin with all credentials, methods, and headers permitted. While this is convenient for development, it presents a security risk in production. For production, consider restricting origins to specific domains: ```diff app.add_middleware( CORSMiddleware, - allow_origins=["*"], + allow_origins=[os.getenv("ALLOWED_ORIGINS", "http://localhost:3000").split(",")], allow_credentials=True, allow_methods=["*"], allow_headers=["*"], )
20-20: Proper API router inclusionThe API router is correctly included with the appropriate prefix.
examples/music-licensing-challenge/src/app/db/database.py (1)
1-7: Good environment variable setupLoading environment variables from the
.envfile is a good practice for configuration management.examples/music-licensing-challenge/src/app/api/__init__.py (1)
1-10: Well-structured API router organization.The API router organization follows best practices by:
- Modularizing endpoints into logical groups (movies, scenes, GraphQL)
- Using proper hierarchical resource paths (/movies, /movies/scenes)
- Adding tags for better API documentation
- Keeping the code clean and focused on composition
This approach makes the API extensible and maintainable as more endpoints are added.
examples/music-licensing-challenge/src/app/graphql/types/genre.py (1)
6-16: Well-structured GraphQL type with clear model conversion.The
GenreGraphQL type is correctly implemented with:
- Properly typed fields matching the ORM model
- A clean
from_modelclass method for ORM-to-GraphQL conversion- Consistent structure with other GraphQL types in the system
This approach maintains a clear separation between database models and GraphQL types while providing a straightforward conversion mechanism.
examples/music-licensing-challenge/src/app/graphql/types/movie.py (1)
21-32: LGTM! Well-implemented model conversion methodThe from_model class method effectively converts the ORM model to the GraphQL type, including handling nested relationships with genres and scenes.
examples/music-licensing-challenge/src/app/schemas/songs.py (1)
8-13: Good enum definition for license statusesThe Strawberry enum for license statuses is clear and well-defined, matching the expected states in the application.
examples/music-licensing-challenge/src/app/repository/scenes.py (1)
14-21: LGTM! Well-optimized query with eager loadingThe method efficiently retrieves scenes with their related entities using selectinload and subqueryload for optimized database access.
examples/music-licensing-challenge/src/app/repository/songs.py (1)
1-8: Import structure and organization looks good.The imports are well-organized and appropriately grouped.
examples/music-licensing-challenge/src/app/repository/movies.py (4)
1-9: Imports are well organized.The imports are properly grouped and well-structured.
11-14: Repository class implementation follows best practices.The class definition and constructor follow the repository pattern appropriately.
15-28: Well-structured method with appropriate loading strategy.The method effectively loads complex nested relationships while preventing N+1 query problems. The documentation is clear.
29-43:✅ Verification successful
Check Python version compatibility for Union type syntax.
The method uses Python 3.10+ type syntax (
Movie | None). Ensure your project requires Python 3.10+ or consider using the olderOptional[Movie]syntax for better compatibility.
🏁 Script executed:
#!/bin/bash # Check for Python version requirements in the project grep -r "python" --include="requirements.txt" --include="pyproject.toml" --include="setup.py" --include="Dockerfile" . # Check for other occurrences of the new union syntax rg "\w+ \| None" --type pyLength of output: 7633
No action required: Python 3.10+ union syntax is supported
Theexamples/music-licensing-challenge/DockerfilespecifiesFROM python:3.11-slim, and the codebase already uses theX | Noneannotation in multiple places. TheMovie | Nonesyntax is fully compatible—no need to revert toOptional[Movie].examples/music-licensing-challenge/src/app/models/movie.py (2)
1-7: Imports are well organized.The imports are correctly structured and include all necessary components.
8-21: Movie model is well-designed with appropriate relationships.The model definition follows SQLAlchemy best practices:
- Primary key and appropriate indexes
- Proper column types with nullable flags where needed
- Well-defined relationships with Genre (many-to-many) and Scene (one-to-many with cascade delete)
This ensures efficient querying and maintains data integrity.
examples/music-licensing-challenge/src/app/schemas/movies.py (2)
1-14: Genre schema is well-defined and follows Pydantic best practices.The schema properly uses Field(...) to indicate required fields and has appropriate model_config settings.
16-25: MovieBase schema is well-structured with proper field definitions.The schema correctly differentiates between required and optional fields, which aligns well with the Movie model.
examples/music-licensing-challenge/src/app/graphql/types/song.py (1)
31-31:⚠️ Potential issueAdd null check for license_status.name
The current implementation might raise an AttributeError if
model.license_statusis None but the code tries to accessname. The conditional check only sets the entire field to None but doesn't handle the attribute access safely.- license_status=model.license_status.name if model.license_status else None, + license_status=model.license_status.name if model.license_status and hasattr(model.license_status, 'name') else None,Likely an incorrect or invalid review comment.
|
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| load_dotenv() | ||
|
|
||
| SQLALCHEMY_DATABASE_URL = os.getenv("DATABASE_URL", "") |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Improve error handling for missing database URL
Using an empty string as the default when DATABASE_URL is missing could lead to silent failures. Consider adding validation or a more meaningful default.
-SQLALCHEMY_DATABASE_URL = os.getenv("DATABASE_URL", "")
+SQLALCHEMY_DATABASE_URL = os.getenv("DATABASE_URL")
+if not SQLALCHEMY_DATABASE_URL:
+ raise ValueError("DATABASE_URL environment variable is not set")| def get_db(): | ||
| db = SessionLocal() | ||
| try: | ||
| return db | ||
| finally: | ||
| db.close() |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Modify get_db to use yield for FastAPI dependency injection
The get_db function should use yield instead of return to work properly as a FastAPI dependency that ensures proper session closure.
def get_db():
+ """Provides a database session and ensures proper closure."""
db = SessionLocal()
try:
- return db
+ yield db
finally:
db.close()📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| def get_db(): | |
| db = SessionLocal() | |
| try: | |
| return db | |
| finally: | |
| db.close() | |
| def get_db(): | |
| """Provides a database session and ensures proper closure.""" | |
| db = SessionLocal() | |
| try: | |
| yield db | |
| finally: | |
| db.close() |
| FROM python:3.11-slim | ||
|
|
||
| WORKDIR /app | ||
|
|
||
| COPY requirements.txt . | ||
| RUN pip install --no-cache-dir -r requirements.txt | ||
|
|
||
| COPY . . | ||
|
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| CMD ["uvicorn", "src.app.main:app", "--host", "0.0.0.0", "--port", "8000", "--reload"] |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Improve Dockerfile for production readiness
The Dockerfile is well-structured for development, but lacks several production best practices:
- Running as a non-root user for security
- The
--reloadflag should be disabled in production - Missing health check configuration
- No explicit container port exposure
FROM python:3.11-slim
WORKDIR /app
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt
COPY . .
-CMD ["uvicorn", "src.app.main:app", "--host", "0.0.0.0", "--port", "8000", "--reload"]
+# Create a non-root user
+RUN adduser --disabled-password --gecos "" appuser
+USER appuser
+
+# Expose the port
+EXPOSE 8000
+
+# Add healthcheck
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+ CMD curl -f http://localhost:8000/health || exit 1
+
+# Use an environment variable to control reload flag
+ENV RELOAD_FLAG=""
+CMD uvicorn src.app.main:app --host 0.0.0.0 --port 8000 ${RELOAD_FLAG}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| FROM python:3.11-slim | |
| WORKDIR /app | |
| COPY requirements.txt . | |
| RUN pip install --no-cache-dir -r requirements.txt | |
| COPY . . | |
| CMD ["uvicorn", "src.app.main:app", "--host", "0.0.0.0", "--port", "8000", "--reload"] | |
| FROM python:3.11-slim | |
| WORKDIR /app | |
| COPY requirements.txt . | |
| RUN pip install --no-cache-dir -r requirements.txt | |
| COPY . . | |
| # Create a non-root user | |
| RUN adduser --disabled-password --gecos "" appuser | |
| USER appuser | |
| # Expose the port | |
| EXPOSE 8000 | |
| # Add healthcheck | |
| HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \ | |
| CMD curl -f http://localhost:8000/health || exit 1 | |
| # Use an environment variable to control reload flag | |
| ENV RELOAD_FLAG="" | |
| CMD uvicorn src.app.main:app --host 0.0.0.0 --port 8000 ${RELOAD_FLAG} |
| @classmethod | ||
| def from_model(cls, model: SceneModel) -> "Scene": | ||
| return cls( | ||
| id=model.id, | ||
| movie_id=model.movie_id, | ||
| scene_number=model.scene_number, | ||
| description=model.description, | ||
| tracks=[Track.from_model(t) for t in model.tracks], | ||
| ) |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Ensure consistent type conversion from SQLAlchemy integers to GraphQL strings.
The from_model method should explicitly convert integer IDs to strings to maintain consistency with the type definitions.
@classmethod
def from_model(cls, model: SceneModel) -> "Scene":
return cls(
- id=model.id,
- movie_id=model.movie_id,
+ id=str(model.id),
+ movie_id=str(model.movie_id),
scene_number=model.scene_number,
description=model.description,
tracks=[Track.from_model(t) for t in model.tracks],
)📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| @classmethod | |
| def from_model(cls, model: SceneModel) -> "Scene": | |
| return cls( | |
| id=model.id, | |
| movie_id=model.movie_id, | |
| scene_number=model.scene_number, | |
| description=model.description, | |
| tracks=[Track.from_model(t) for t in model.tracks], | |
| ) | |
| @classmethod | |
| def from_model(cls, model: SceneModel) -> "Scene": | |
| return cls( | |
| id=str(model.id), | |
| movie_id=str(model.movie_id), | |
| scene_number=model.scene_number, | |
| description=model.description, | |
| tracks=[Track.from_model(t) for t in model.tracks], | |
| ) |
| if id is None: | ||
| scenes = SceneRepository(db) | ||
| return scenes.get_all_scenes_with_details() | ||
| else: | ||
| scene = db.query(Scene).filter(Scene.id == id).first() | ||
| if scene is None: | ||
| raise HTTPException(status_code=404, detail="Scene not found") | ||
| return scene |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Use the repository pattern consistently for scene retrieval.
There's an inconsistency in how scenes are retrieved. When no ID is provided, you use the SceneRepository, but when an ID is provided, you query the database directly. This direct query doesn't eagerly load related data like tracks and songs, unlike the repository method.
if id is None:
scenes = SceneRepository(db)
return scenes.get_all_scenes_with_details()
else:
- scene = db.query(Scene).filter(Scene.id == id).first()
+ scene_repo = SceneRepository(db)
+ scene = scene_repo.get_scene_by_id_with_details(id)
if scene is None:
raise HTTPException(status_code=404, detail="Scene not found")
return sceneThis change ensures consistent data loading patterns and leverages the repository's methods for both cases.
📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| if id is None: | |
| scenes = SceneRepository(db) | |
| return scenes.get_all_scenes_with_details() | |
| else: | |
| scene = db.query(Scene).filter(Scene.id == id).first() | |
| if scene is None: | |
| raise HTTPException(status_code=404, detail="Scene not found") | |
| return scene | |
| if id is None: | |
| scenes = SceneRepository(db) | |
| return scenes.get_all_scenes_with_details() | |
| else: | |
| scene_repo = SceneRepository(db) | |
| scene = scene_repo.get_scene_by_id_with_details(id) | |
| if scene is None: | |
| raise HTTPException(status_code=404, detail="Scene not found") | |
| return scene |
| def update_song( | ||
| self, | ||
| song_id: str, | ||
| license_status: Optional[LicenseStatusEnum], | ||
| ) -> Optional[Song]: | ||
| song = self.get_song_by_id(song_id) | ||
| if song: | ||
| if license_status is not None: | ||
| db_license_status = ( | ||
| self.db.query(LicenseStatus) | ||
| .filter(LicenseStatus.name == license_status.value) | ||
| .first() | ||
| ) | ||
| if db_license_status: | ||
| song.license_status = db_license_status | ||
| else: | ||
| print( | ||
| f"Warning: License status '{license_status.value}' not found in database." | ||
| ) | ||
| return None | ||
|
|
||
| self.db.commit() | ||
| self.db.refresh(song) | ||
| return song | ||
| return None |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Replace print statements with proper logging.
Using print statements for warnings is not ideal for production code. Consider using a proper logging mechanism that can be configured for different environments.
+ import logging
+
+ logger = logging.getLogger(__name__)
+
class SongRepository:
def __init__(self, db: Session):
self.db = db
def get_song_by_id(self, song_id: str) -> Optional[Song]:
return self.db.query(Song).filter(Song.id == song_id).first()
def update_song(
self,
song_id: str,
license_status: Optional[LicenseStatusEnum],
) -> Optional[Song]:
song = self.get_song_by_id(song_id)
if song:
if license_status is not None:
db_license_status = (
self.db.query(LicenseStatus)
.filter(LicenseStatus.name == license_status.value)
.first()
)
if db_license_status:
song.license_status = db_license_status
else:
- print(
- f"Warning: License status '{license_status.value}' not found in database."
- )
+ logger.warning(
+ f"License status '{license_status.value}' not found in database."
+ )
return None
self.db.commit()
self.db.refresh(song)
return song
return None📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| def update_song( | |
| self, | |
| song_id: str, | |
| license_status: Optional[LicenseStatusEnum], | |
| ) -> Optional[Song]: | |
| song = self.get_song_by_id(song_id) | |
| if song: | |
| if license_status is not None: | |
| db_license_status = ( | |
| self.db.query(LicenseStatus) | |
| .filter(LicenseStatus.name == license_status.value) | |
| .first() | |
| ) | |
| if db_license_status: | |
| song.license_status = db_license_status | |
| else: | |
| print( | |
| f"Warning: License status '{license_status.value}' not found in database." | |
| ) | |
| return None | |
| self.db.commit() | |
| self.db.refresh(song) | |
| return song | |
| return None | |
| import logging | |
| logger = logging.getLogger(__name__) | |
| class SongRepository: | |
| def __init__(self, db: Session): | |
| self.db = db | |
| def get_song_by_id(self, song_id: str) -> Optional[Song]: | |
| return self.db.query(Song).filter(Song.id == song_id).first() | |
| def update_song( | |
| self, | |
| song_id: str, | |
| license_status: Optional[LicenseStatusEnum], | |
| ) -> Optional[Song]: | |
| song = self.get_song_by_id(song_id) | |
| if song: | |
| if license_status is not None: | |
| db_license_status = ( | |
| self.db.query(LicenseStatus) | |
| .filter(LicenseStatus.name == license_status.value) | |
| .first() | |
| ) | |
| if db_license_status: | |
| song.license_status = db_license_status | |
| else: | |
| logger.warning( | |
| f"License status '{license_status.value}' not found in database." | |
| ) | |
| return None | |
| self.db.commit() | |
| self.db.refresh(song) | |
| return song | |
| return None |
🛠️ Refactor suggestion
Add exception handling for database operations.
The update_song method doesn't handle potential database exceptions that could occur during commit. Adding try-except blocks would make the code more robust.
def update_song(
self,
song_id: str,
license_status: Optional[LicenseStatusEnum],
) -> Optional[Song]:
song = self.get_song_by_id(song_id)
if song:
if license_status is not None:
db_license_status = (
self.db.query(LicenseStatus)
.filter(LicenseStatus.name == license_status.value)
.first()
)
if db_license_status:
song.license_status = db_license_status
else:
print(
f"Warning: License status '{license_status.value}' not found in database."
)
return None
+ try:
self.db.commit()
self.db.refresh(song)
return song
+ except Exception as e:
+ self.db.rollback()
+ print(f"Error updating song: {e}")
+ return None
return None📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| def update_song( | |
| self, | |
| song_id: str, | |
| license_status: Optional[LicenseStatusEnum], | |
| ) -> Optional[Song]: | |
| song = self.get_song_by_id(song_id) | |
| if song: | |
| if license_status is not None: | |
| db_license_status = ( | |
| self.db.query(LicenseStatus) | |
| .filter(LicenseStatus.name == license_status.value) | |
| .first() | |
| ) | |
| if db_license_status: | |
| song.license_status = db_license_status | |
| else: | |
| print( | |
| f"Warning: License status '{license_status.value}' not found in database." | |
| ) | |
| return None | |
| self.db.commit() | |
| self.db.refresh(song) | |
| return song | |
| return None | |
| def update_song( | |
| self, | |
| song_id: str, | |
| license_status: Optional[LicenseStatusEnum], | |
| ) -> Optional[Song]: | |
| song = self.get_song_by_id(song_id) | |
| if song: | |
| if license_status is not None: | |
| db_license_status = ( | |
| self.db.query(LicenseStatus) | |
| .filter(LicenseStatus.name == license_status.value) | |
| .first() | |
| ) | |
| if db_license_status: | |
| song.license_status = db_license_status | |
| else: | |
| print( | |
| f"Warning: License status '{license_status.value}' not found in database." | |
| ) | |
| return None | |
| try: | |
| self.db.commit() | |
| self.db.refresh(song) | |
| return song | |
| except Exception as e: | |
| self.db.rollback() | |
| print(f"Error updating song: {e}") | |
| return None | |
| return None |
💡 Verification agent
🧩 Analysis chain
Verify type compatibility between song_id parameter and Song.id model field.
The method takes song_id as a string, but according to the related code snippets, Song.id might be an Integer in the model definition. Please verify that the comparison works as expected or consider adding type conversion if needed.
🏁 Script executed:
#!/bin/bash
# Check the Song model definition to verify the id column type
rg "class Song" -A 15 --glob "*.py" | grep -A 3 "id = Column"Length of output: 715
🏁 Script executed:
#!/bin/bash
# Locate and inspect get_song_by_id in the repository
rg "def get_song_by_id" -A 20 --glob "*.py"
grep -R "get_song_by_id" -n examples/music-licensing-challenge/src/app/repository/songs.py
sed -n '1,200p' examples/music-licensing-challenge/src/app/repository/songs.pyLength of output: 3729
🏁 Script executed:
#!/bin/bash
# Locate FastAPI app and router definitions
rg -Hn "FastAPI" -n examples/music-licensing-challenge/src/app
rg -Hn "include_router" -n examples/music-licensing-challenge/src/app
rg -Hn "@router" -n examples/music-licensing-challenge/src/app
# Find endpoint definitions involving song_id
rg -Hn "get_song" -n examples/music-licensing-challenge/src/app
rg -Hn "update_song" -n examples/music-licensing-challenge/src/appLength of output: 1919
🏁 Script executed:
#!/bin/bash
# Display GraphQL query definitions to see the ID type for song
sed -n '1,200p' examples/music-licensing-challenge/src/app/graphql/queries.py
echo "----"
# Display GraphQL mutation definitions for update_song to see argument types
sed -n '1,200p' examples/music-licensing-challenge/src/app/graphql/mutations.pyLength of output: 2648
Ensure numeric ID conversion before querying
The Song.id column is defined as an Integer, but both get_song_by_id and update_song accept a str and compare it directly to the integer column. Relying on implicit cast can lead to errors if a non-numeric string is passed. Please convert the incoming song_id to int (or change the parameter type to int) before filtering.
- Affected file:
examples/music-licensing-challenge/src/app/repository/songs.py
•get_song_by_id(self, song_id: str)(around line 14)
•update_song(self, song_id: str, …)(around line 17)
Suggested diff for get_song_by_id:
- def get_song_by_id(self, song_id: str) -> Optional[Song]:
- return self.db.query(Song).filter(Song.id == song_id).first()
+ def get_song_by_id(self, song_id: str) -> Optional[Song]:
+ try:
+ song_id_int = int(song_id)
+ except ValueError:
+ return None
+ return self.db.query(Song).filter(Song.id == song_id_int).first()Apply a similar conversion in update_song (or change both signatures to song_id: int and update call sites).
Committable suggestion skipped: line range outside the PR's diff.
| @field | ||
| def all_movies(self) -> List[Movie]: | ||
| db = get_db() | ||
| movies = MovieRepository(db).get_all_movies_with_details() | ||
| return [Movie.from_model(m) for m in movies] | ||
|
|
||
| @field | ||
| def movie(self, id: ID) -> Optional[Movie]: | ||
| db = get_db() | ||
| movie = MovieRepository(db).get_movie_by_id_with_details(id) | ||
| return Movie.from_model(movie) if movie else None | ||
|
|
||
| @field | ||
| def scene(self, id: ID) -> Optional[Scene]: | ||
| db = get_db() | ||
| scene = SceneRepository(db).get_scene_by_id_with_details(id) | ||
| return Scene.from_model(scene) if scene else None | ||
|
|
||
| @field | ||
| def all_scenes(self) -> List[Scene]: | ||
| db = get_db() | ||
| scenes = SceneRepository(db).get_all_scenes_with_details() | ||
| return [Scene.from_model(s) for s in scenes] | ||
|
|
||
| @field | ||
| def all_license_status(self) -> List[LicenseStatus]: | ||
| db = get_db() | ||
| licenses = LicenseRepository(db).get_all_licenses() | ||
| return [LicenseStatus.from_model(s) for s in licenses] | ||
|
|
||
| @field | ||
| def song(self, id: ID) -> Optional[Song]: | ||
| db = get_db() | ||
| song = SongRepository(db).get_song_by_id(id) | ||
| return Song.from_model(song) if song else None |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Add exception handling for database operations
The current implementation doesn't handle potential exceptions from database operations. Consider adding try-except blocks to catch and handle database errors gracefully, especially for production environments.
Here's an example implementation for one of the methods:
@field
def movie(self, id: ID) -> Optional[Movie]:
- db = get_db()
- movie = MovieRepository(db).get_movie_by_id_with_details(id)
- return Movie.from_model(movie) if movie else None
+ try:
+ db = get_db()
+ movie = MovieRepository(db).get_movie_by_id_with_details(id)
+ return Movie.from_model(movie) if movie else None
+ except Exception as e:
+ # Log the error
+ # Consider returning a GraphQL error instead of None
+ return None📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| @field | |
| def all_movies(self) -> List[Movie]: | |
| db = get_db() | |
| movies = MovieRepository(db).get_all_movies_with_details() | |
| return [Movie.from_model(m) for m in movies] | |
| @field | |
| def movie(self, id: ID) -> Optional[Movie]: | |
| db = get_db() | |
| movie = MovieRepository(db).get_movie_by_id_with_details(id) | |
| return Movie.from_model(movie) if movie else None | |
| @field | |
| def scene(self, id: ID) -> Optional[Scene]: | |
| db = get_db() | |
| scene = SceneRepository(db).get_scene_by_id_with_details(id) | |
| return Scene.from_model(scene) if scene else None | |
| @field | |
| def all_scenes(self) -> List[Scene]: | |
| db = get_db() | |
| scenes = SceneRepository(db).get_all_scenes_with_details() | |
| return [Scene.from_model(s) for s in scenes] | |
| @field | |
| def all_license_status(self) -> List[LicenseStatus]: | |
| db = get_db() | |
| licenses = LicenseRepository(db).get_all_licenses() | |
| return [LicenseStatus.from_model(s) for s in licenses] | |
| @field | |
| def song(self, id: ID) -> Optional[Song]: | |
| db = get_db() | |
| song = SongRepository(db).get_song_by_id(id) | |
| return Song.from_model(song) if song else None | |
| @field | |
| def movie(self, id: ID) -> Optional[Movie]: | |
| try: | |
| db = get_db() | |
| movie = MovieRepository(db).get_movie_by_id_with_details(id) | |
| return Movie.from_model(movie) if movie else None | |
| except Exception as e: | |
| # Log the error | |
| # Consider returning a GraphQL error instead of None | |
| return None |
| id: str | ||
| title: str |
There was a problem hiding this comment.
Type inconsistency for Song.id
The id field is typed as str but based on the database model (from the relevant code snippets), it's an Integer in the database. This could cause type conversion issues.
- id: str
+ id: int📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| id: str | |
| title: str | |
| id: int | |
| title: str |
| populate_by_name=True, | ||
| ) | ||
| scene_number: int = Field(..., alias="sceneNumber") | ||
| movie_id: str = Field(..., alias="movieId") |
There was a problem hiding this comment.
💡 Verification agent
🧩 Analysis chain
Verify type consistency for movie_id
The movie_id field is typed as str but it might be an int in the database model (based on common practices). Verify the database schema to ensure type consistency to avoid potential conversion issues.
🏁 Script executed:
#!/bin/bash
# Check the movie_id type in the database models
rg "movie_id.*Column" --type py -A 2 -B 2Length of output: 533
Align movie_id type with the database model
The Pydantic schema defines movie_id as str, but the SQLAlchemy model uses an Integer column. Update the schema to use int (or add explicit conversion) to prevent runtime casting errors.
• File: examples/music-licensing-challenge/src/app/schemas/scenes.py
Line 38:
- movie_id: str = Field(..., alias="movieId")
+ movie_id: int = Field(..., alias="movieId")📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| movie_id: str = Field(..., alias="movieId") | |
| movie_id: int = Field(..., alias="movieId") |
| ## Project Structure | ||
|
|
||
| The project is organized as follows: |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Add missing project structure details
The README mentions "The project is organized as follows:" but doesn't actually provide the structure. Consider adding a tree-like representation of the project's directory structure to help new developers understand the codebase organization.
The project is organized as follows:
+
+```
+examples/music-licensing-challenge/
+├── src/
+│ ├── app/
+│ │ ├── api/ # REST API routers
+│ │ ├── db/ # Database configuration
+│ │ ├── graphql/ # GraphQL schema, queries, mutations
+│ │ ├── models/ # SQLAlchemy ORM models
+│ │ ├── repository/ # Data access layer
+│ │ └── schemas/ # Pydantic models
+│ └── main.py # Application entry point
+├── Dockerfile
+├── docker-compose.yml
+└── requirements.txt
+```📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| ## Project Structure | |
| The project is organized as follows: | |
| ## Project Structure | |
| The project is organized as follows: | |
What's this PR do?
This PR adds an example of a music licensing backend, demonstrating the integration of REST API, GraphQL, WebSockets, PostgreSQL, Docker, Pydantic, and Python. The application allows to create a full backend with those technologies.
Key Features:
Why this PR is important:
This PR provides an example of how to build a modern backend using a combination of popular technologies. It showcases best practices for API design, real-time communication, and data management.
@ulises-jeremias @matiasz8
Summary by CodeRabbit