Update Protobuf Definitions

This skill regenerates the Python protobuf files in durabletask/internal/ from the latest proto source at https://github.com/microsoft/durabletask-protobuf.

Prerequisites

• Python 3.11 must be available on the system. Verify with py -3.11 --version (Windows) or python3.11 --version (Linux/macOS). If it is not installed, stop and ask the user to install it — do not use a different version.
• On Linux/macOS, jq must be installed.
• Internet access is required to download the proto file and query the GitHub API.

Steps

1. Set up the .proto_venv environment (skip if it already exists)

Check whether .proto_venv/ already exists at the repo root and whether grpcio-tools==1.65.4 is installed in it:

# Windows
.proto_venv\Scripts\pip.exe list 2>$null | Select-String grpcio-tools

# Bash
.proto_venv/bin/pip list 2>/dev/null | grep grpcio-tools

If the venv does not exist or grpcio-tools is missing, create/recreate it:

# Windows
py -3.11 -m venv .proto_venv
.proto_venv\Scripts\python.exe -m pip install grpcio-tools==1.65.4

# Bash
python3.11 -m venv .proto_venv
.proto_venv/bin/python -m pip install grpcio-tools==1.65.4

[!NOTE] Do not delete .proto_venv after use. It is reused across runs to avoid reinstalling grpcio-tools each time. The directory is already in .gitignore.

2. Download the latest proto file

Download from the main branch of microsoft/durabletask-protobuf:

# Windows (PowerShell)
Invoke-WebRequest `
  -Uri "https://raw.githubusercontent.com/microsoft/durabletask-protobuf/refs/heads/main/protos/orchestrator_service.proto" `
  -OutFile "durabletask/internal/orchestrator_service.proto"

# Bash
curl -o durabletask/internal/orchestrator_service.proto \
  https://raw.githubusercontent.com/microsoft/durabletask-protobuf/refs/heads/main/protos/orchestrator_service.proto

3. Regenerate the Python files

Run grpc_tools.protoc from the repo root:

# Windows
.proto_venv\Scripts\python.exe -m grpc_tools.protoc --proto_path=. --python_out=. --pyi_out=. --grpc_python_out=. ./durabletask/internal/orchestrator_service.proto

# Bash
.proto_venv/bin/python -m grpc_tools.protoc --proto_path=. --python_out=. --pyi_out=. --grpc_python_out=. ./durabletask/internal/orchestrator_service.proto

This produces three files in durabletask/internal/:

• orchestrator_service_pb2.py
• orchestrator_service_pb2_grpc.py
• orchestrator_service_pb2.pyi

4. Update PROTO_SOURCE_COMMIT_HASH

Query the GitHub API for the latest commit that touched the proto file and overwrite durabletask/internal/PROTO_SOURCE_COMMIT_HASH with that single hash:

# Windows (PowerShell)
$response = Invoke-RestMethod `
  -Uri "https://api.github.com/repos/microsoft/durabletask-protobuf/commits?path=protos/orchestrator_service.proto&sha=main&per_page=1"
$response[0].sha | Out-File -FilePath "durabletask/internal/PROTO_SOURCE_COMMIT_HASH" -NoNewline -Encoding ascii

# Bash
curl -s -H "Accept: application/vnd.github.v3+json" \
  "https://api.github.com/repos/microsoft/durabletask-protobuf/commits?path=protos/orchestrator_service.proto&sha=main&per_page=1" \
  | jq -jr '.[0].sha' > durabletask/internal/PROTO_SOURCE_COMMIT_HASH

The file should contain exactly one commit hash with no trailing newline.

5. Clean up the downloaded proto file

Delete the .proto source file — only the generated Python files are kept in the repo:

# Windows
Remove-Item durabletask/internal/orchestrator_service.proto

# Bash
rm durabletask/internal/orchestrator_service.proto

6. Verify

Confirm the generated modules import successfully using the project's main venv:

python -c "from durabletask.internal import orchestrator_service_pb2; print('pb2 OK'); from durabletask.internal import orchestrator_service_pb2_grpc; print('pb2_grpc OK')"

Generated files