Add datafusion-rocksdb crate with basic layout and README

.github/actions/setup-rust/action.yml

@@ -28,10 +28,8 @@ runs:
     - name: Setup Rust toolchain
       shell: bash
       run: |
-        rustup show
         rustup self update
-        rustup install stable
-        rustup default stable
+        rustup show
         rustup component add clippy
         rustup component add rustfmt
     - name: Install Cargo tools

crates/datafusion-rocksdb/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+authors = ["Matthew Turner <[email protected]>"]
+description = "DataFusion UDFs and extension points for RocksDB"
+edition = "2021"
+homepage = "https://github.com/datafusion-contrib/datafusion-dft/tree/main/crates/datafusion-rocksdb"
+keywords = ["datafusion", "rocksdb", "query", "sql"]
+license = "Apache-2.0"
+name = "datafusion-rocksdb"
+readme = "README.md"
+repository = "https://github.com/datafusion-contrib/datafusion-dft/tree/main/crates/datafusion-rocksdb"
+version = "0.1.0"
+
+[dependencies]
+datafusion = { version = "46" }

crates/datafusion-rocksdb/README.md

@@ -0,0 +1,32 @@
+# DataFusion RocksDB
+
+A DataFusion extension crate that provides User-Defined Functions (UDFs) and extension points for integrating RocksDB with Apache DataFusion.
+
+## Overview
+
+This crate enables DataFusion to work with RocksDB, providing:
+
+- **UDFs**: Custom functions for interacting with RocksDB data
+- **Extension Points**: DataFusion extension interfaces for RocksDB integration
+- **Performance**: Efficient key-value storage and retrieval through RocksDB
+
+## Features
+
+This crate is currently under development. Planned features include:
+
+- Reading and writing data to RocksDB key-value stores
+- Table functions for querying RocksDB data
+- Custom UDFs for RocksDB operations
+
+## Usage
+
+Add this crate to your `Cargo.toml`:
+
+```toml
+[dependencies]
+datafusion-rocksdb = "0.1.0"
+```
+
+## License
+
+Licensed under the Apache License, Version 2.0. See [LICENSE.txt](../../LICENSE.txt) for details.

crates/datafusion-rocksdb/src/lib.rs

@@ -0,0 +1,33 @@
+// 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.
+
+//! DataFusion RocksDB integration
+//!
+//! This crate provides User-Defined Functions (UDFs) and DataFusion extension points
+//! for working with RocksDB key-value stores.
+
+#![deny(clippy::clone_on_ref_ptr)]
+
+/// Module for RocksDB-related User-Defined Functions
+pub mod udfs {
+    //! User-Defined Functions for RocksDB operations
+}
+
+/// Module for RocksDB DataFusion extension points
+pub mod extensions {
+    //! DataFusion extension points for RocksDB integration
+}

rust-toolchain.toml

@@ -1,2 +1,2 @@
 [toolchain]
-channel = "1.85.0"
+channel = "1.86.0"