ci: add runtime version check (#555)

polkadot/scripts/gitlab/check_runtime.sh

@@ -0,0 +1,117 @@
+#!/bin/sh
+#
+#
+# check for any changes in the node/src/runtime, srml/ and core/sr_* trees. if
+# there are any changes found, it should mark the PR breaksconsensus and
+# "auto-fail" the PR if there isn't a change in the runtime/src/lib.rs file 
+# that alters the version.
+
+set -e # fail on any error
+
+
+# give some context
+git log --graph --oneline --decorate=short -n 10
+
+
+VERSIONS_FILE="runtime/src/lib.rs"
+
+github_label () {
+	echo
+	echo "# run github-api job for labeling it ${1}"
+	curl -sS -X POST \
+		-F "token=${CI_JOB_TOKEN}" \
+		-F "ref=master" \
+		-F "variables[LABEL]=${1}" \
+		-F "variables[PRNO]=${CI_COMMIT_REF_NAME}" \
+		-F "variables[PROJECT]=paritytech/polkadot" \
+		${GITLAB_API}/projects/${GITHUB_API_PROJECT}/trigger/pipeline
+}
+
+
+
+
+# check if the wasm sources changed
+if ! git diff --name-only origin/master...${CI_COMMIT_SHA} \
+	| grep -q -e '^runtime/'
+then
+	cat <<-EOT
+	
+	no changes to the runtime source code detected
+
+	EOT
+
+	exit 0
+fi
+
+
+
+# check for spec_version updates: if the spec versions changed, then there is
+# consensus-critical logic that has changed. the runtime wasm blobs must be
+# rebuilt.
+
+add_spec_version="$(git diff origin/master...${CI_COMMIT_SHA} ${VERSIONS_FILE} \
+	| sed -n -r "s/^\+[[:space:]]+spec_version: +([0-9]+),$/\1/p")"
+sub_spec_version="$(git diff origin/master...${CI_COMMIT_SHA} ${VERSIONS_FILE} \
+	| sed -n -r "s/^\-[[:space:]]+spec_version: +([0-9]+),$/\1/p")"
+
+
+# see if the version and the binary blob changed
+if [ "${add_spec_version}" != "${sub_spec_version}" ]
+then
+
+	github_label "B2-breaksapi"
+
+	cat <<-EOT
+		
+		changes to the runtime sources and changes in the spec version.
+	
+		spec_version: ${sub_spec_version} -> ${add_spec_version}
+	
+	EOT
+	exit 0
+
+else
+	# check for impl_version updates: if only the impl versions changed, we assume
+	# there is no consensus-critical logic that has changed.
+
+	add_impl_version="$(git diff origin/master...${CI_COMMIT_SHA} ${VERSIONS_FILE} \
+		| sed -n -r 's/^\+[[:space:]]+impl_version: +([0-9]+),$/\1/p')"
+	sub_impl_version="$(git diff origin/master...${CI_COMMIT_SHA} ${VERSIONS_FILE} \
+		| sed -n -r 's/^\-[[:space:]]+impl_version: +([0-9]+),$/\1/p')"
+
+
+	# see if the impl version changed
+	if [ "${add_impl_version}" != "${sub_impl_version}" ]
+	then
+		cat <<-EOT
+		
+		changes to the runtime sources and changes in the impl version.
+
+		impl_version: ${sub_impl_version} -> ${add_impl_version}
+
+		EOT
+		exit 0
+	fi
+
+
+	cat <<-EOT
+
+	wasm source files changed but not the spec/impl version and the runtime
+	binary blob. If changes made do not alter logic, just bump 'impl_version'.
+	If they do change logic, bump 'spec_version' and rebuild wasm.
+
+	source file directories:
+	- runtime
+
+	versions file: ${VERSIONS_FILE}
+
+	EOT
+
+	# drop through into pushing `gotissues` and exit 1...
+fi
+
+# dropped through. there's something wrong;  exit 1.
+
+exit 1
+
+# vim: noexpandtab