feat: add ruff formatting check (#4)

.github/workflows/ruff.yml

@@ -0,0 +1,26 @@
+name: Ruff
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.12"]
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      uses: conda-incubator/setup-miniconda@v3
+      with:
+        miniforge-version: "latest"
+        activate-environment: base
+        environment-file: environment.yml
+        python-version: ${{ matrix.python }}
+        auto-activate-base: true
+    - name: Analyzing the code using ruff
+      uses: chartboost/ruff-action@v1

environment.yml

@@ -18,6 +18,7 @@ dependencies:
   - Faker
   - pip:
     - adbc_driver_manager
+    - cargo
     - pyarrow
     - duckdb == 0.10.1
     - datafusion

pyproject.toml

@@ -30,6 +30,8 @@ target-version = "py310"
 # never autoformat upstream or generated code
 exclude = ["third_party/", "src/spark/connect"]
 # do not autofix the following (will still get flagged in lint)
+
+[lint]
 unfixable = [
   "F401",  # unused imports
   "T201",  # print statements

src/gateway/demo/client_demo.py

@@ -12,6 +12,7 @@
 
 
 # pylint: disable=fixme
+# ruff: noqa: E712
 def execute_query(spark_session: SparkSession) -> None:
     """Runs a single sample query against the gateway."""
     users_location = str(Path('users.parquet').absolute())

src/gateway/tests/test_server.py

@@ -7,6 +7,7 @@
 
 
 # pylint: disable=missing-function-docstring
+# ruff: noqa: E712
 class TestDataFrameAPI:
     """Tests of the dataframe side of SparkConnect."""