Allow to separate ControllerServer and NodeServer, allow to disable attacher (it do nothing in reality)

4 files changed, 39 insertions, 8 deletions

diff --git a/cmd/seaweedfs-csi-driver/main.go b/cmd/seaweedfs-csi-driver/main.go
index 69403f1..eac42ec 100644
--- a/cmd/seaweedfs-csi-driver/main.go
+++ b/cmd/seaweedfs-csi-driver/main.go
@@ -12,6 +12,10 @@ import (
 )
 
 var (
+	runNode        = flag.Bool("node", false, "run node server")
+	runController  = flag.Bool("controller", false, "run controller server")
+	enableAttacher = flag.Bool("attacher", false, "enable attacher")
+
 	filer             = flag.String("filer", "localhost:8888", "filer server")
 	endpoint          = flag.String("endpoint", "unix://tmp/seaweedfs-csi.sock", "CSI endpoint to accept gRPC calls")
 	nodeID            = flag.String("nodeid", "", "node id")
@@ -53,7 +57,11 @@ func main() {
 
 	glog.Infof("connect to filer %s", *filer)
 
-	drv := driver.NewSeaweedFsDriver(*filer, *nodeID, *endpoint)
+	drv := driver.NewSeaweedFsDriver(*filer, *nodeID, *endpoint, *enableAttacher)
+
+	drv.RunNode = *runNode
+	drv.RunController = *runController
+
 	drv.ConcurrentWriters = *concurrentWriters
 	drv.CacheCapacityMB = *cacheCapacityMB
 	drv.CacheDir = *cacheDir
diff --git a/deploy/helm/seaweedfs-csi-driver/templates/daemonset.yml b/deploy/helm/seaweedfs-csi-driver/templates/daemonset.yml
index 8d90cd3..d6fc537 100644
--- a/deploy/helm/seaweedfs-csi-driver/templates/daemonset.yml
+++ b/deploy/helm/seaweedfs-csi-driver/templates/daemonset.yml
@@ -65,6 +65,9 @@ spec:
             - "--nodeid=$(NODE_ID)"
             - "--cacheDir=/var/cache/seaweedfs"
             - "--dataLocality={{ .Values.dataLocality }}"
+            - "--node"
+            - "--controller"
+            - "--attacher"
             {{- if .Values.node.injectTopologyInfoFromNodeLabel.enabled }}
             - "--dataCenter=$(DATACENTER)"
             {{- end }}
diff --git a/deploy/helm/seaweedfs-csi-driver/templates/statefulset.yml b/deploy/helm/seaweedfs-csi-driver/templates/statefulset.yml
index 56d0b76..6d5c16b 100644
--- a/deploy/helm/seaweedfs-csi-driver/templates/statefulset.yml
+++ b/deploy/helm/seaweedfs-csi-driver/templates/statefulset.yml
@@ -79,6 +79,9 @@ spec:
             - "--endpoint=$(CSI_ENDPOINT)"
             - "--filer=$(SEAWEEDFS_FILER)"
             - "--nodeid=$(NODE_ID)"
+            - "--node"
+            - "--controller"
+            - "--attacher"
           env:
             - name: CSI_ENDPOINT
               value: unix:///var/lib/csi/sockets/pluginproxy/csi.sock
diff --git a/pkg/driver/driver.go b/pkg/driver/driver.go
index 23dbae3..0d3af5a 100644
--- a/pkg/driver/driver.go
+++ b/pkg/driver/driver.go
@@ -49,9 +49,12 @@ type SeaweedFsDriver struct {
 	signature         int32
 	DataCenter        string
 	DataLocality      datalocality.DataLocality
+
+	RunNode       bool
+	RunController bool
 }
 
-func NewSeaweedFsDriver(filer, nodeID, endpoint string) *SeaweedFsDriver {
+func NewSeaweedFsDriver(filer, nodeID, endpoint string, enableAttacher bool) *SeaweedFsDriver {
 
 	glog.Infof("Driver: %v version: %v", driverName, version)
 
@@ -75,11 +78,17 @@ func NewSeaweedFsDriver(filer, nodeID, endpoint string) *SeaweedFsDriver {
 	})
 	n.AddControllerServiceCapabilities([]csi.ControllerServiceCapability_RPC_Type{
 		csi.ControllerServiceCapability_RPC_CREATE_DELETE_VOLUME,
-		csi.ControllerServiceCapability_RPC_PUBLISH_UNPUBLISH_VOLUME,
 		csi.ControllerServiceCapability_RPC_SINGLE_NODE_MULTI_WRITER,
 		csi.ControllerServiceCapability_RPC_EXPAND_VOLUME,
 	})
 
+	// we need this just only for csi-attach, but we do nothing for attach/detach
+	if enableAttacher {
+		n.AddControllerServiceCapabilities([]csi.ControllerServiceCapability_RPC_Type{
+			csi.ControllerServiceCapability_RPC_PUBLISH_UNPUBLISH_VOLUME,
+		})
+	}
+
 	return n
 }
 
@@ -95,15 +104,21 @@ func (n *SeaweedFsDriver) initClient() error {
 func (n *SeaweedFsDriver) Run() {
 	glog.Info("starting")
 
-	controller := NewControllerServer(n)
-	node := NewNodeServer(n)
+	var controller *ControllerServer
+	if n.RunController {
+		controller = NewControllerServer(n)
+	}
+
+	var node *NodeServer
+	if n.RunNode {
+		node = NewNodeServer(n)
+	}
 
 	s := NewNonBlockingGRPCServer()
 	s.Start(n.endpoint,
 		NewIdentityServer(n),
 		controller,
 		node)
-	s.Wait()
 
 	stopChan := make(chan os.Signal)
 	signal.Notify(stopChan, os.Interrupt, syscall.SIGTERM, syscall.SIGHUP)
@@ -114,8 +129,10 @@ func (n *SeaweedFsDriver) Run() {
 	s.Stop()
 	s.Wait()
 
-	glog.Infof("node cleanup")
-	node.NodeCleanup()
+	if node != nil {
+		glog.Infof("node cleanup")
+		node.NodeCleanup()
+	}
 
 	glog.Infof("stopped")
 }