add checker for deepcopy generated code

To avoid code from being merged without being regenerated, this commit
adds a checker, that will only run in the CI, to verify if there is code
ungenerated.

Signed-off-by: André Martins <andre@cilium.io>

Makefile

@@ -32,6 +32,7 @@ BENCHFLAGS ?= $(BENCHFLAGS_EVAL)
 LOGLEVEL ?= "error"
 SKIP_VET ?= "false"
 SKIP_KVSTORES ?= "false"
+SKIP_K8S_CODE_GEN_CHECK ?= "true"
 
 JOB_BASE_NAME ?= cilium_test
 
@@ -424,6 +425,10 @@ microk8s: check-microk8s
 	@echo "    microk8s.kubectl -n kube-system delete pod -l k8s-app=cilium"
 
 precheck: ineffassign logging-subsys-field
+ifeq ($(SKIP_K8S_CODE_GEN_CHECK),"false")
+	@$(ECHO_CHECK) contrib/scripts/check-k8s-code-gen.sh
+	$(QUIET) contrib/scripts/check-k8s-code-gen.sh
+endif
 	@$(ECHO_CHECK) contrib/scripts/check-fmt.sh
 	$(QUIET) contrib/scripts/check-fmt.sh
 	@$(ECHO_CHECK) contrib/scripts/check-log-newlines.sh

contrib/scripts/check-k8s-code-gen.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+
+set -e
+set -o pipefail
+
+# Delete all zz_generated.deepcopy.go files
+find . -not -path "./vendor/*" -iname "*zz_generated.deepcopy.go" -exec rm  {} \;
+
+# Generate all files
+make generate-k8s-api
+
+# Check for diff
+diff="$(git diff)"
+
+if [ -n "$diff" ]; then
+	echo "Ungenerated deepcopy source code:"
+	echo "$diff"
+	echo "Please run make generate-k8s-api and submit your changes"
+	exit 1
+fi
+
+exit 0

test/provision/compile.sh

@@ -72,7 +72,7 @@ then
     fi
 else
     echo "compiling cilium..."
-    sudo -u vagrant -H -E make LOCKDEBUG=1 SKIP_DOCS=true
+    sudo -u vagrant -H -E make LOCKDEBUG=1 SKIP_K8S_CODE_GEN_CHECK=false SKIP_DOCS=true
     echo "installing cilium..."
     make install
     mkdir -p /etc/sysconfig/