ceph-csi/cmd/cephcsi.go

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/*
Copyright 2019 The Ceph-CSI Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package main
import (
"flag"
"os"
"path"
"strings"
"github.com/ceph/ceph-csi/pkg/cephfs"
"github.com/ceph/ceph-csi/pkg/rbd"
"github.com/ceph/ceph-csi/pkg/util"
"k8s.io/klog"
)
const (
rbdType = "rbd"
cephfsType = "cephfs"
rbdDefaultName = "rbd.csi.ceph.com"
cephfsDefaultName = "cephfs.csi.ceph.com"
)
var (
// common flags
vtype = flag.String("type", "", "driver type [rbd|cephfs]")
endpoint = flag.String("endpoint", "unix://tmp/csi.sock", "CSI endpoint")
driverName = flag.String("drivername", "", "name of the driver")
nodeID = flag.String("nodeid", "", "node id")
// rbd related flags
containerized = flag.Bool("containerized", true, "whether run as containerized")
instanceID = flag.String("instanceid", "", "Unique ID distinguishing this instance of Ceph CSI among other"+
" instances, when sharing Ceph clusters across CSI instances for provisioning")
// cephfs related flags
volumeMounter = flag.String("volumemounter", "", "default volume mounter (possible options are 'kernel', 'fuse')")
mountCacheDir = flag.String("mountcachedir", "", "mount info cache save dir")
metadataStorage = flag.String("metadatastorage", "", "metadata persistence method [node|k8s_configmap]")
)
func init() {
klog.InitFlags(nil)
if err := flag.Set("logtostderr", "true"); err != nil {
klog.Exitf("failed to set logtostderr flag: %v", err)
}
flag.Parse()
}
func getType() string {
if vtype == nil || len(*vtype) == 0 {
a0 := path.Base(os.Args[0])
if strings.Contains(a0, rbdType) {
return rbdType
}
if strings.Contains(a0, cephfsType) {
return cephfsType
}
return ""
}
return *vtype
}
func getDriverName() string {
// was explicitly passed a driver name
if driverName != nil && len(*driverName) != 0 {
return *driverName
}
// select driver name based on volume type
switch getType() {
case rbdType:
return rbdDefaultName
case cephfsType:
return cephfsDefaultName
default:
return ""
}
}
func main() {
driverType := getType()
if len(driverType) == 0 {
klog.Fatalln("driver type not specified")
}
dname := getDriverName()
err := util.ValidateDriverName(dname)
if err != nil {
klog.Fatalln(err) // calls exit
}
switch driverType {
case rbdType:
rbd.PluginFolder = rbd.PluginFolder + dname
driver := rbd.NewDriver()
driver.Run(dname, *nodeID, *endpoint, *instanceID, *containerized)
case cephfsType:
cephfs.PluginFolder = cephfs.PluginFolder + dname
cp, err := util.CreatePersistanceStorage(
cephfs.PluginFolder, *metadataStorage, dname)
if err != nil {
os.Exit(1)
}
driver := cephfs.NewDriver()
driver.Run(dname, *nodeID, *endpoint, *volumeMounter, *mountCacheDir, cp)
default:
klog.Fatalln("invalid volume type", vtype) // calls exit
}
os.Exit(0)
}