ci: use grpcio-tools for protoc in manylinux containers

Revert protox approach and use grpcio-tools to install protoc in
manylinux containers. Only install when manylinux is used (not needed
for Linux host builds).

Changes:
- Revert build.rs to use prost-build with protoc
- Revert Cargo.toml to prost-build 0.14
- Add protoc installation via grpcio-tools for manylinux containers only

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: luoyuxia

.github/workflows/release_python.yml

@@ -52,6 +52,13 @@ jobs:
       - name: Generate Python README
         run: python bindings/python/generate_readme.py
 
+      - name: Install protoc via grpcio-tools (manylinux)
+        if: matrix.manylinux != ''
+        run: |
+          pip install grpcio-tools
+          PROTOC=$(python -c "import grpc_tools, os; print(os.path.join(os.path.dirname(grpc_tools.__file__), 'protoc'))")
+          echo "PROTOC=$PROTOC" >> $GITHUB_ENV
+
       - uses: PyO3/maturin-action@v1
         with:
           working-directory: bindings/python
@@ -81,6 +88,13 @@ jobs:
       - name: Generate Python README
         run: python3 bindings/python/generate_readme.py
 
+      - name: Install protoc via grpcio-tools (manylinux)
+        if: matrix.manylinux != ''
+        run: |
+          pip install grpcio-tools
+          PROTOC=$(python -c "import grpc_tools, os; print(os.path.join(os.path.dirname(grpc_tools.__file__), 'protoc'))")
+          echo "PROTOC=$PROTOC" >> $GITHUB_ENV
+
       - uses: PyO3/maturin-action@v1
         with:
           working-directory: bindings/python

crates/fluss/Cargo.toml

@@ -82,6 +82,4 @@ test-env-helpers = "0.2.2"
 
 
 [build-dependencies]
-prost-build = { version = "0.12" }
-prost-types = "0.12"
-protox = "0.6.0"
+prost-build = { version = "0.14" }

crates/fluss/build.rs

@@ -18,20 +18,11 @@
 use std::io::Result;
 
 fn main() -> Result<()> {
-    // Use protox to parse proto files (pure Rust, no protoc needed)
-    let file_descriptor_set = protox::compile(&["src/proto/fluss_api.proto"],&["src/proto"])
-        .expect("Failed to parse proto files");
-
     let mut config = prost_build::Config::new();
     config.bytes([
         ".proto.PbProduceLogReqForBucket.records",
         ".proto.PbPutKvReqForBucket.records",
     ]);
-
-    // Compile using the parsed file descriptor set
-    config
-        .compile_fds(file_descriptor_set)
-        .expect("Failed to compile proto files");
-
+    config.compile_protos(&["src/proto/fluss_api.proto"], &["src/proto"])?;
     Ok(())
 }