Add CI job to check protobuf files are up-to-date

.circleci/config.yml

@@ -253,6 +253,13 @@ jobs:
       - run: cargo clippy --version
       - run: bash automation/all_clippy_checks.sh
       - save-sccache-cache
+  Check Protobuf files are up-to-date:
+    docker:
+      - image: circleci/rust:latest
+    resource_class: small
+    steps:
+      - checkout
+      - run: ./automation/check_protobuf_files_current.py
   Lint Bash scripts:
     docker:
       - image: koalaman/shellcheck-alpine:stable
@@ -449,6 +456,9 @@ workflows:
   clippy:
     jobs:
       - Lint Rust with clippy
+  check-protobuf-uptodate:
+    jobs:
+      - Check Protobuf files are up-to-date
   check-dependencies:
     jobs:
       - Check Rust dependencies

automation/check_protobuf_files_current.py

@@ -0,0 +1,19 @@
+#!/usr/bin/env python3
+
+# Purpose: Run cargo update and make a pull-request against master.
+# Dependencies: None
+# Usage: ./automation/cargo-update-pr.py
+
+from shared import step_msg, fatal_err, run_cmd_checked, find_app_services_root, ensure_working_tree_clean
+
+step_msg("Checking that the generated protobuf Rust files are up-to-date")
+# ensure_working_tree_clean()
+config_file_path = find_app_services_root() / "tools/protobuf_files.toml"
+run_cmd_checked(["cargo", "run", "--bin", "protobuf-gen", config_file_path])
+
+if run_cmd_checked(["git", "status", "--porcelain"], capture_output=True).stdout:
+    run_cmd_checked(["git", "status"])
+    fatal_err("""
+The protobuf rust files are outdated.
+You can fix this yourself by running cargo run --bin protobuf-gen <APP_SERVICES_ROOT>/tools/protobuf_files.toml
+    """)