ci: introduce the safety check for rust

Signed-off-by: Vincenzo Palazzo <[email protected]>

Author: vincenzopalazzo

.github/workflows/ci.yaml

@@ -31,7 +31,7 @@ jobs:
           - CFG: "make-EXPERIMENTAL-check w/ VALGRIND"
             TEST_CMD: "make check-source check-units installcheck check-gen-updated"
             EXPERIMENTAL_FEATURES: 1
-	    VALGRIND: 1
+            VALGRIND: 1
     steps:
       - name: Checkout
         uses: actions/[email protected]
@@ -97,6 +97,33 @@ jobs:
           ./configure
           make check-doc
 
+  check-rust:
+    name: Check Rust file diff
+    runs-on: ubuntu-20.04
+    env:
+      DEVELOPER: 1
+      VALGRIND: 0
+      EXPERIMENTAL_FEATURES: 0
+      COMPAT: 1
+    steps:
+      - name: Checkout
+        uses: actions/[email protected]
+
+      - name: Set up Python 3.7
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.7
+
+      - name: Install dependencies
+        run: bash -x .github/scripts/setup.sh
+
+      - name: Check Rust diff file
+        run: |
+          pip install mako
+          ./configure
+          make check-rust
+
+
   proto-test:
     name: Protocol Test Config
     runs-on: ubuntu-20.04

Makefile

@@ -510,6 +510,9 @@ check-python-flake8:
 check-pytest-pyln-proto:
 	PATH=$(PYLN_PATH) PYTHONPATH=$(MY_CHECK_PYTHONPATH) $(PYTEST) contrib/pyln-proto/tests/
 
+check-rust:
+	git diff --exit-code .msggen.json | echo "diff in rust file, need to be updated by enabling rust" && exit 1
+
 check-includes: check-src-includes check-hdr-includes
 	@tools/check-includes.sh