From d28682b71545d20be2810b0951bfafc0fe1f539a Mon Sep 17 00:00:00 2001
From: Sid Shukla <sid.shukla@nutanix.com>
Date: Tue, 21 Nov 2023 18:45:19 +0530
Subject: [PATCH] Add last git commit hash to build flags

This ensures we have the git hash of the changes in our CI logs
so we can correlate the code changes being executed.
---
 Makefile                  |  9 ++++++---
 hack/ensure-go.sh         |  2 +-
 hack/install-go.sh        |  4 ++--
 main.go                   | 12 +++++++++---
 package/docker/Dockerfile |  2 +-
 5 files changed, 19 insertions(+), 10 deletions(-)

diff --git a/Makefile b/Makefile
index 687e2c20da..c92c4a2e8a 100644
--- a/Makefile
+++ b/Makefile
@@ -235,7 +235,8 @@ kind-delete: ## Delete the kind cluster
 
 .PHONY: build
 build: generate fmt ## Build manager binary.
-	go build -o bin/manager main.go
+	GIT_COMMIT_HASH=`git rev-parse HEAD` && \
+	go build -ldflags "-X main.gitCommitHash=$${GIT_COMMIT_HASH}" -o bin/manager main.go
 
 .PHONY: run
 run: manifests generate fmt vet ## Run a controller from your host.
@@ -243,7 +244,8 @@ run: manifests generate fmt vet ## Run a controller from your host.
 
 .PHONY: docker-build
 docker-build: $(KO) ## Build docker image with the manager.
-	KO_DOCKER_REPO=ko.local $(KO) build -B --platform=${PLATFORMS} -t ${IMG_TAG} -L .
+	GIT_COMMIT_HASH=`git rev-parse HEAD` && \
+	KO_DOCKER_REPO=ko.local GOFLAGS="-ldflags=-X=main.gitCommitHash=$${GIT_COMMIT_HASH}" $(KO) build -B --platform=${PLATFORMS} -t ${IMG_TAG} -L .
 
 .PHONY: docker-push
 docker-push: $(KO) ## Push docker image with the manager.
@@ -330,7 +332,8 @@ cluster-templates: $(KUSTOMIZE) ## Generate cluster templates for all flavors
 
 .PHONY: docker-build-e2e
 docker-build-e2e: $(KO) ## Build docker image with the manager with e2e tag.
-	KO_DOCKER_REPO=ko.local $(KO) build -B --platform=${PLATFORMS_E2E} -t e2e -L .
+	GIT_COMMIT_HASH=`git rev-parse HEAD` && \
+	KO_DOCKER_REPO=ko.local GOFLAGS="-ldflags=-X=main.gitCommitHash=$${GIT_COMMIT_HASH}" $(KO) build -B --platform=${PLATFORMS_E2E} -t e2e -L .
 	docker tag ko.local/cluster-api-provider-nutanix:e2e ${IMG_REPO}:e2e
 
 .PHONY: prepare-local-clusterctl
diff --git a/hack/ensure-go.sh b/hack/ensure-go.sh
index c06edf43cd..cbb16b0229 100755
--- a/hack/ensure-go.sh
+++ b/hack/ensure-go.sh
@@ -31,7 +31,7 @@ EOF
   local go_version
   IFS=" " read -ra go_version <<< "$(go version)"
   local minimum_go_version
-  minimum_go_version=go1.18.3
+  minimum_go_version=go1.21.4
   if [[ "${minimum_go_version}" != $(echo -e "${minimum_go_version}\n${go_version[2]}" | sort -s -t. -k 1,1 -k 2,2n -k 3,3n | head -n1) && "${go_version[2]}" != "devel" ]]; then
     cat <<EOF
 Detected go version: ${go_version[*]}.
diff --git a/hack/install-go.sh b/hack/install-go.sh
index 4a01303a21..c58be995d9 100755
--- a/hack/install-go.sh
+++ b/hack/install-go.sh
@@ -4,8 +4,8 @@ set -o errexit
 set -o nounset
 set -o pipefail
 
-wget https://go.dev/dl/go1.18.4.linux-amd64.tar.gz
-rm -rf /usr/local/go && tar -C /usr/local -xzf go1.18.4.linux-amd64.tar.gz
+wget https://go.dev/dl/go1.21.4.linux-amd64.tar.gz
+rm -rf /usr/local/go && tar -C /usr/local -xzf go1.21.4.linux-amd64.tar.gz
 export PATH=$PATH:/usr/local/go/bin
 go version
 
diff --git a/main.go b/main.go
index a1fe5e4484..17a87af985 100644
--- a/main.go
+++ b/main.go
@@ -55,6 +55,9 @@ var (
 	setupLog = ctrl.Log.WithName("setup")
 )
 
+// gitCommitHash is the git commit hash of the code that is running.
+var gitCommitHash string
+
 func init() {
 	utilruntime.Must(clientgoscheme.AddToScheme(scheme))
 
@@ -80,6 +83,7 @@ func main() {
 		probeAddr               string
 		maxConcurrentReconciles int
 	)
+
 	flag.StringVar(&metricsAddr, "metrics-bind-address", ":8080", "The address the metric endpoint binds to.")
 	flag.StringVar(&probeAddr, "health-probe-bind-address", ":8081", "The address the probe endpoint binds to.")
 	flag.BoolVar(&enableLeaderElection, "leader-elect", false,
@@ -90,6 +94,7 @@ func main() {
 		"max-concurrent-reconciles",
 		defaultMaxConcurrentReconciles,
 		"The maximum number of allowed, concurrent reconciles.")
+
 	opts := zap.Options{
 		TimeEncoder: zapcore.RFC3339TimeEncoder,
 	}
@@ -97,6 +102,7 @@ func main() {
 	flag.Parse()
 
 	ctrl.SetLogger(zap.New(zap.UseFlagOptions(&opts)))
+	setupLog.Info("Initializing Nutanix Cluster API Infrastructure Provider", "Git Hash", gitCommitHash)
 
 	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
 		Scheme:                 scheme,
@@ -107,11 +113,11 @@ func main() {
 		LeaderElectionID:       "f265110d.cluster.x-k8s.io",
 	})
 	if err != nil {
-		setupLog.Error(err, "unable to start manager")
+		setupLog.Error(err, "unable to create manager")
 		os.Exit(1)
 	}
 
-	// Setup the context that's going to be used in controllers and for the manager.
+	// Set up the context that's going to be used in controllers and for the manager.
 	ctx := ctrl.SetupSignalHandler()
 
 	// Create a secret informer for the Nutanix client
@@ -173,7 +179,7 @@ func main() {
 		os.Exit(1)
 	}
 
-	setupLog.Info("starting manager")
+	setupLog.Info("starting CAPX Controller Manager")
 	if err := mgr.Start(ctx); err != nil {
 		setupLog.Error(err, "problem running manager")
 		os.Exit(1)
diff --git a/package/docker/Dockerfile b/package/docker/Dockerfile
index 3b8eb5f590..419e2d76a2 100644
--- a/package/docker/Dockerfile
+++ b/package/docker/Dockerfile
@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM golang:1.16 as builder
+FROM golang:1.21 as builder
 
 WORKDIR /workspace
 # Copy the Go Modules manifests