me own pihole

csi-s3/storage-csi-s3/pkg/s3/mounter.go

@@ -0,0 +1,82 @@
+package s3
+
+import (
+	"fmt"
+	"os/exec"
+	"time"
+
+	"github.com/golang/glog"
+	"k8s.io/kubernetes/pkg/util/mount"
+)
+
+// Mounter interface which can be implemented
+// by the different mounter types
+type Mounter interface {
+	Stage(stagePath string) error
+	Unstage(stagePath string) error
+	Mount(source string, target string) error
+}
+
+const (
+	s3fsMounterType     = "s3fs"
+	goofysMounterType   = "goofys"
+	s3backerMounterType = "s3backer"
+	rcloneMounterType   = "rclone"
+	mounterTypeKey      = "mounter"
+)
+
+// newMounter returns a new mounter depending on the mounterType parameter
+func newMounter(bucket *bucket, cfg *Config) (Mounter, error) {
+	mounter := bucket.Mounter
+	// Fall back to mounterType in cfg
+	if len(bucket.Mounter) == 0 {
+		mounter = cfg.Mounter
+	}
+	switch mounter {
+	case s3fsMounterType:
+		return newS3fsMounter(bucket, cfg)
+
+	case goofysMounterType:
+		return newGoofysMounter(bucket, cfg)
+
+	case s3backerMounterType:
+		return newS3backerMounter(bucket, cfg)
+
+	case rcloneMounterType:
+		return newRcloneMounter(bucket, cfg)
+
+	default:
+		// default to s3backer
+		return newS3backerMounter(bucket, cfg)
+	}
+}
+
+func fuseMount(path string, command string, args []string) error {
+	cmd := exec.Command(command, args...)
+	glog.V(3).Infof("Mounting fuse with command: %s and args: %s", command, args)
+
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("Error fuseMount command: %s\nargs: %s\noutput: %s", command, args, out)
+	}
+
+	return waitForMount(path, 10*time.Second)
+}
+
+func fuseUnmount(path string) error {
+	if err := mount.New("").Unmount(path); err != nil {
+		return err
+	}
+	// as fuse quits immediately, we will try to wait until the process is done
+	process, err := findFuseMountProcess(path)
+	if err != nil {
+		glog.Errorf("Error getting PID of fuse mount: %s", err)
+		return nil
+	}
+	if process == nil {
+		glog.Warningf("Unable to find PID of fuse mount %s, it must have finished already", path)
+		return nil
+	}
+	glog.Infof("Found fuse pid %v of mount %s, checking if it still runs", process.Pid, path)
+	return waitForProcess(process, 1)
+}