feat: Establish subproject pyiceberg_core

.github/workflows/bindings_python_ci.yml

@@ -0,0 +1,83 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+name: Bindings Python CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.event_name }}
+  cancel-in-progress: true
+
+jobs:
+  check-rust:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Check format
+        run: cargo fmt --all -- --check
+      - name: Check clippy
+        run: cargo clippy --all-targets --all-features -- -D warnings
+
+  check-python:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install tools
+        run: |
+          pip install ruff
+      - name: Check format
+        working-directory: "bindings/python"
+        run: |
+          ruff format . --diff
+      - name: Check style
+        working-directory: "bindings/python"
+        run: |
+          ruff check .
+
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - windows-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v4
+        with:
+          python-version: 3.8
+      - uses: PyO3/maturin-action@v1
+        with:
+          working-directory: "bindings/python"
+          command: build
+          args: --out dist --sdist
+      - name: Run tests
+        working-directory: "bindings/python"
+        shell: bash
+        run: |
+          set -e
+          pip install dist/pyiceberg_core-*.whl --force-reinstall
+          pip install pytest
+          pytest -v

.gitignore

@@ -15,9 +15,12 @@
 # specific language governing permissions and limitations
 # under the License.
 
-/target
-/Cargo.lock
+target
+Cargo.lock
 .idea
 .vscode
 **/.DS_Store
 dist/*
+**/venv
+*.so
+*.pyc

Cargo.toml

@@ -18,11 +18,14 @@
 [workspace]
 resolver = "2"
 members = [
-  "crates/catalog/*",
-  "crates/examples",
-  "crates/iceberg",
-  "crates/integrations/*",
-  "crates/test_utils",
+    "crates/catalog/*",
+    "crates/examples",
+    "crates/iceberg",
+    "crates/integrations/*",
+    "crates/test_utils",
+]
+exclude = [
+    "bindings/python"
 ]
 
 [workspace.package]

bindings/python/Cargo.toml

@@ -0,0 +1,35 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+[package]
+name = "pyiceberg_core_rust"
+version = "0.0.1"
+edition = "2021"
+homepage = "https://rust.iceberg.apache.org"
+rust-version = "1.77.1"
+# This crate is used to build python bindings, we don't want to publish it
+publish = false
+
+license = "Apache-2.0"
+keywords = ["iceberg"]
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+iceberg = { path = "../../crates/iceberg" }
+pyo3 = { version = "0.22", features = ["extension-module"] }

bindings/python/README.md

@@ -0,0 +1,44 @@
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one
+  ~ or more contributor license agreements.  See the NOTICE file
+  ~ distributed with this work for additional information
+  ~ regarding copyright ownership.  The ASF licenses this file
+  ~ to you under the Apache License, Version 2.0 (the
+  ~ "License"); you may not use this file except in compliance
+  ~ with the License.  You may obtain a copy of the License at
+  ~
+  ~   http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing,
+  ~ software distributed under the License is distributed on an
+  ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  ~ KIND, either express or implied.  See the License for the
+  ~ specific language governing permissions and limitations
+  ~ under the License.
+-->
+
+# Pyiceberg Core
+
+This project is used to build an iceberg-rust powered core for pyiceberg.
+
+## Setup
+
+```shell
+python -m venv venv
+source ./venv/bin/activate
+
+pip install maturin
+```
+
+## Build
+
+```shell
+maturin develop
+```
+
+## Test
+
+```shell
+maturin develop -E test
+pytest -v
+```

bindings/python/pyproject.toml

@@ -0,0 +1,43 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+[build-system]
+requires = ["maturin>=1.0,<2.0"]
+build-backend = "maturin"
+
+[project]
+name = "pyiceberg_core"
+version = "0.0.1"
+classifiers = [
+  "Development Status :: 4 - Beta",
+  "Intended Audience :: Developers",
+  "License :: OSI Approved :: Apache Software License",
+  "Operating System :: OS Independent",
+  "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
+]
+
+[project.optional-dependencies]
+test = ["pytest"]
+
+[tool.maturin]
+features = ["pyo3/extension-module"]
+python-source = "python"
+module-name = "pyiceberg_core.pyiceberg_core_rust"
+
+[tool.ruff.lint]
+ignore = ["F403", "F405"]

bindings/python/python/pyiceberg_core/__init__.py

@@ -0,0 +1,21 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+from .pyiceberg_core_rust import *
+
+__doc__ = pyiceberg_core_rust.__doc__
+__all__ = pyiceberg_core_rust.__all__

bindings/python/src/lib.rs

@@ -0,0 +1,31 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+use iceberg::io::FileIOBuilder;
+use pyo3::prelude::*;
+
+#[pyfunction]
+fn hello_world() -> PyResult<String> {
+    let _ = FileIOBuilder::new_fs_io().build().unwrap();
+    Ok("Hello, world!".to_string())
+}
+
+#[pymodule]
+fn pyiceberg_core_rust(m: &Bound<'_, PyModule>) -> PyResult<()> {
+    m.add_function(wrap_pyfunction!(hello_world, m)?)?;
+    Ok(())
+}

bindings/python/tests/test_basic.py

@@ -0,0 +1,22 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+from pyiceberg_core import hello_world
+
+
+def test_hello_world():
+    hello_world()