Update driver version during build time

update driver version and add git commit
to the image. This will help us to identify
what latest git commit image contains.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

Makefile

@@ -21,6 +21,16 @@ CSI_IMAGE_VERSION=$(if $(ENV_CSI_IMAGE_VERSION),$(ENV_CSI_IMAGE_VERSION),canary)
 
 $(info cephcsi image settings: $(CSI_IMAGE_NAME) version $(CSI_IMAGE_VERSION))
 
+GIT_COMMIT=$(shell git rev-list -1 HEAD)
+
+GO_PROJECT=github.com/ceph/ceph-csi
+
+# go build flags
+LDFLAGS ?=
+LDFLAGS += -X $(GO_PROJECT)/pkg/util.GitCommit=$(GIT_COMMIT)
+# CSI_IMAGE_VERSION will be considered as the driver version
+LDFLAGS += -X $(GO_PROJECT)/pkg/util.DriverVersion=$(CSI_IMAGE_VERSION)
+
 all: cephcsi
 
 test: go-test static-check
@@ -38,7 +48,7 @@ func-test:
 .PHONY: cephcsi
 cephcsi:
 	if [ ! -d ./vendor ]; then dep ensure -vendor-only; fi
-	CGO_ENABLED=0 GOOS=linux go build -a -ldflags '-extldflags "-static"' -o  _output/cephcsi ./cmd/
+	CGO_ENABLED=0 GOOS=linux go build -a -ldflags '$(LDFLAGS) -extldflags "-static"' -o  _output/cephcsi ./cmd/
 
 image-cephcsi: cephcsi
 	cp _output/cephcsi deploy/cephcsi/image/cephcsi

cmd/cephcsi.go

@@ -93,6 +93,7 @@ func getDriverName() string {
 }
 
 func main() {
+	klog.Infof("Driver version: %s and Git version: %s", util.DriverVersion, util.GitCommit)
 	var cp util.CachePersister
 
 	driverType := getType()

pkg/cephfs/driver.go

@@ -26,8 +26,6 @@ import (
 )
 
 const (
-	// version of ceph driver
-	version = "1.0.0"
 
 	// volIDVersion is the version number of volume ID encoding scheme
 	volIDVersion uint16 = 1
@@ -94,7 +92,6 @@ func NewNodeServer(d *csicommon.CSIDriver) *NodeServer {
 // Run start a non-blocking grpc controller,node and identityserver for
 // ceph CSI driver which can serve multiple parallel requests
 func (fs *Driver) Run(driverName, nodeID, endpoint, volumeMounter, mountCacheDir, instanceID string, cachePersister util.CachePersister) {
-	klog.Infof("Driver: %v version: %v", driverName, version)
 
 	// Configuration
 
@@ -144,7 +141,7 @@ func (fs *Driver) Run(driverName, nodeID, endpoint, volumeMounter, mountCacheDir
 	}
 	// Initialize default library driver
 
-	fs.cd = csicommon.NewCSIDriver(driverName, version, nodeID)
+	fs.cd = csicommon.NewCSIDriver(driverName, util.DriverVersion, nodeID)
 	if fs.cd == nil {
 		klog.Fatalln("failed to initialize CSI driver")
 	}

pkg/cephfs/mountcache.go

@@ -39,7 +39,7 @@ func initVolumeMountCache(driverName, mountCacheDir string) {
 
 	volumeMountCache.nodeCacheStore.BasePath = mountCacheDir
 	volumeMountCache.nodeCacheStore.CacheDir = driverName
-	klog.Infof("mount-cache: name: %s, version: %s, mountCacheDir: %s", driverName, version, mountCacheDir)
+	klog.Infof("mount-cache: name: %s, version: %s, mountCacheDir: %s", driverName, util.DriverVersion, mountCacheDir)
 }
 
 func remountCachedVolumes() error {
@@ -228,7 +228,7 @@ func (mc *volumeMountCacheMap) nodeStageVolume(volID, stagingTargetPath, mounter
 		klog.Warningf("mount-cache: node stage volume ignore last cache entry for volume %s", volID)
 	}
 
-	me = volumeMountCacheEntry{DriverVersion: version}
+	me = volumeMountCacheEntry{DriverVersion: util.DriverVersion}
 
 	me.VolumeID = volID
 	me.Secrets = encodeCredentials(secrets)

pkg/rbd/rbd.go

@@ -46,7 +46,6 @@ type Driver struct {
 }
 
 var (
-	version = "1.0.0"
 
 	// PluginFolder defines the location of ceph plugin
 	PluginFolder = "/var/lib/kubelet/plugins/"
@@ -102,8 +101,6 @@ func NewNodeServer(d *csicommon.CSIDriver, containerized bool) (*NodeServer, err
 func (r *Driver) Run(driverName, nodeID, endpoint, instanceID string, containerized bool, cachePersister util.CachePersister) {
 	var err error
 
-	klog.Infof("Driver: %v version: %v", driverName, version)
-
 	// Create ceph.conf for use with CLI commands
 	if err = util.WriteCephConfig(); err != nil {
 		klog.Fatalf("failed to write ceph configuration file (%v)", err)
@@ -123,7 +120,7 @@ func (r *Driver) Run(driverName, nodeID, endpoint, instanceID string, containeri
 	snapJournal.SetCSIDirectorySuffix(CSIInstanceID)
 
 	// Initialize default library driver
-	r.cd = csicommon.NewCSIDriver(driverName, version, nodeID)
+	r.cd = csicommon.NewCSIDriver(driverName, util.DriverVersion, nodeID)
 	if r.cd == nil {
 		klog.Fatalln("Failed to initialize CSI Driver.")
 	}

pkg/util/util.go

@@ -39,6 +39,14 @@ func RoundUpToMiB(size int64) int64 {
 	return roundUpSize(requestBytes, MiB)
 }
 
+// variables which will be set during the build time
+var (
+	// GitCommit tell the latest git commit image is built from
+	GitCommit string
+	// DriverVersion which will be driver version
+	DriverVersion string
+)
+
 func roundUpSize(volumeSizeBytes, allocationUnitBytes int64) int64 {
 	roundedUp := volumeSizeBytes / allocationUnitBytes
 	if volumeSizeBytes%allocationUnitBytes > 0 {