FastAPI + Strawberry + SQLAlchemy GraphQL and REST benchmarks

config.yaml

@@ -23,9 +23,15 @@ servers:
 # - name: Starlette + Graphql Core v3
 #   path: servers/starlette-graphql-core/
 
-# - name: Starlette Plain JSON 
+# - name: Starlette Plain JSON
 #   path: servers/starlette-plain-json/
 
+- name: SQLAlchemy + Strawberry
+  path: servers/fastapi-sqlalchemy/
+
+- name: SQLAlchemy + FastAPI REST
+  path: servers/fastapi-sqlalchemy/
+
 queries:
 - name: Top 250 rated movies
   runner: queries/top-movies.js
@@ -34,3 +40,5 @@ queries:
       runner: queries/top-movies-rest.js
     - name: Django Plain JSON
       runner: queries/top-movies-rest.js
+    - name: SQLAlchemy + FastAPI REST
+      runner: queries/top-movies-rest.js

servers/fastapi-sqlalchemy/Dockerfile

@@ -0,0 +1,18 @@
+FROM python:3.9
+
+ENV POETRY_VERSION=1.1.8 \
+    # make poetry install to this location
+    POETRY_HOME="/opt/poetry" \
+    # make poetry create the virtual environment in the project's root
+    # it gets named `.venv`
+    POETRY_VIRTUALENVS_IN_PROJECT=true \
+    # do not ask any interactive question
+    POETRY_NO_INTERACTION=1
+
+RUN python -m pip install poetry
+
+COPY pyproject.toml poetry.lock ./
+RUN poetry install --no-dev
+COPY ./ ./
+
+CMD poetry run uvicorn app:app --host 0.0.0.0 --port 8000 --workers 1

servers/fastapi-sqlalchemy/alembic.ini

@@ -0,0 +1,99 @@
+# A generic, single database configuration.
+
+[alembic]
+# path to migration scripts
+script_location = alembic
+
+# template used to generate migration files
+# file_template = %%(rev)s_%%(slug)s
+
+# sys.path path, will be prepended to sys.path if present.
+# defaults to the current working directory.
+prepend_sys_path = .
+
+# timezone to use when rendering the date within the migration file
+# as well as the filename.
+# If specified, requires the python-dateutil library that can be
+# installed by adding `alembic[tz]` to the pip requirements
+# string value is passed to dateutil.tz.gettz()
+# leave blank for localtime
+# timezone =
+
+# max length of characters to apply to the
+# "slug" field
+# truncate_slug_length = 40
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+# set to 'true' to allow .pyc and .pyo files without
+# a source .py file to be detected as revisions in the
+# versions/ directory
+# sourceless = false
+
+# version location specification; This defaults
+# to alembic/versions.  When using multiple version
+# directories, initial revisions must be specified with --version-path.
+# The path separator used here should be the separator specified by "version_path_separator"
+# version_locations = %(here)s/bar:%(here)s/bat:alembic/versions
+
+# version path separator; As mentioned above, this is the character used to split
+# version_locations. Valid values are:
+#
+# version_path_separator = :
+# version_path_separator = ;
+# version_path_separator = space
+version_path_separator = os  # default: use os.pathsep
+
+# the output encoding used when revision files
+# are written from script.py.mako
+# output_encoding = utf-8
+
+sqlalchemy.url = sqlite+aiosqlite:///db.sqlite3
+
+[post_write_hooks]
+# post_write_hooks defines scripts or Python functions that are run
+# on newly generated revision scripts.  See the documentation for further
+# detail and examples
+
+# format using "black" - use the console_scripts runner, against the "black" entrypoint
+# hooks = black
+# black.type = console_scripts
+# black.entrypoint = black
+# black.options = -l 79 REVISION_SCRIPT_FILENAME
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S

servers/fastapi-sqlalchemy/alembic/README

@@ -0,0 +1 @@
+Generic single-database configuration with an async dbapi.

servers/fastapi-sqlalchemy/alembic/env.py

@@ -0,0 +1,84 @@
+import asyncio
+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+from sqlalchemy.ext.asyncio import AsyncEngine
+
+from alembic import context
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+
+from db.base import Base
+
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+fileConfig(config.config_file_name)
+
+import db.models
+target_metadata = Base.metadata
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def run_migrations_offline():
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def do_run_migrations(connection):
+    context.configure(connection=connection, target_metadata=target_metadata)
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+async def run_migrations_online():
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+    connectable = AsyncEngine(
+        engine_from_config(
+            config.get_section(config.config_ini_section),
+            prefix="sqlalchemy.",
+            poolclass=pool.NullPool,
+            future=True,
+        )
+    )
+
+    async with connectable.connect() as connection:
+        await connection.run_sync(do_run_migrations)
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    asyncio.run(run_migrations_online())

servers/fastapi-sqlalchemy/alembic/script.py.mako

@@ -0,0 +1,24 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+branch_labels = ${repr(branch_labels)}
+depends_on = ${repr(depends_on)}
+
+
+def upgrade():
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade():
+    ${downgrades if downgrades else "pass"}

servers/fastapi-sqlalchemy/alembic/versions/fc48e8664a90_.py

@@ -0,0 +1,45 @@
+"""empty message
+
+Revision ID: fc48e8664a90
+Revises: 
+Create Date: 2021-10-12 22:25:33.933017
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'fc48e8664a90'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('directors',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('name', sa.String(length=40), nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('movies',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('imdb_id', sa.String(length=40), nullable=False),
+    sa.Column('title', sa.String(length=120), nullable=False),
+    sa.Column('year', sa.Integer(), nullable=False),
+    sa.Column('image_url', sa.String(length=255), nullable=False),
+    sa.Column('imdb_rating', sa.Float(), nullable=False),
+    sa.Column('imdb_rating_count', sa.String(length=40), nullable=False),
+    sa.Column('director_id', sa.Integer(), nullable=False),
+    sa.ForeignKeyConstraint(['director_id'], ['directors.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('movies')
+    op.drop_table('directors')
+    # ### end Alembic commands ###

servers/fastapi-sqlalchemy/app.py

@@ -0,0 +1,9 @@
+from fastapi import FastAPI
+
+from gql.app import graphql_app
+from rest.router import api_router
+
+app = FastAPI()
+
+app.mount("/graphql", graphql_app)
+app.include_router(api_router)

servers/fastapi-sqlalchemy/db/base.py

@@ -0,0 +1,16 @@
+from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession
+from sqlalchemy.orm import sessionmaker, declarative_base
+from sqlalchemy.util.concurrency import asynccontextmanager
+
+engine = create_async_engine(
+    "sqlite+aiosqlite:///db.sqlite3",
+    future=True,
+)
+Base = declarative_base(bind=engine)
+Session = sessionmaker(bind=engine, class_=AsyncSession)
+
+
+@asynccontextmanager
+async def get_session():
+    async with Session() as session:
+        yield session

servers/fastapi-sqlalchemy/db/models.py

@@ -0,0 +1,30 @@
+from sqlalchemy import Column, String, Integer, Float, ForeignKey
+from sqlalchemy.orm import relationship
+
+from db.base import Base
+
+
+class Director(Base):
+    __tablename__ = "directors"
+    id = Column(Integer(), primary_key=True)
+
+    name = Column(String(40), nullable=False)
+
+
+class Movie(Base):
+    __tablename__ = "movies"
+    id = Column(Integer(), primary_key=True)
+
+    imdb_id = Column(String(40), nullable=False)
+    title = Column(String(120), nullable=False)
+    year = Column(Integer(), nullable=False)
+    image_url = Column(String(255), nullable=False)
+    imdb_rating = Column(Float(), nullable=False)
+    imdb_rating_count = Column(String(40), nullable=False)
+
+    director_id = Column(
+        Integer(),
+        ForeignKey("directors.id"),
+        nullable=False,
+    )
+    director = relationship(Director)

servers/fastapi-sqlalchemy/db/queries.py

@@ -0,0 +1,11 @@
+from sqlalchemy import select
+from db.models import Movie
+from db.base import get_session
+from sqlalchemy.orm import selectinload
+
+
+async def get_all_movies():
+    query = select(Movie).options(selectinload(Movie.director))
+    async with get_session() as session:
+        movies = await session.scalars(query)
+    return movies.all()