86 lines
2.1 KiB
Go
86 lines
2.1 KiB
Go
package s3
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import (
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"fmt"
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"os/exec"
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"time"
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"github.com/golang/glog"
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"k8s.io/kubernetes/pkg/util/mount"
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)
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// Mounter interface which can be implemented
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// by the different mounter types
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type Mounter interface {
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Stage(stagePath string) error
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Unstage(stagePath string) error
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Mount(source string, target string) error
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}
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const (
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s3fsMounterType = "s3fs"
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goofysMounterType = "goofys"
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s3qlMounterType = "s3ql"
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s3backerMounterType = "s3backer"
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rcloneMounterType = "rclone"
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mounterTypeKey = "mounter"
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)
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// newMounter returns a new mounter depending on the mounterType parameter
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func newMounter(bucket *bucket, cfg *Config) (Mounter, error) {
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mounter := bucket.Mounter
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// Fall back to mounterType in cfg
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if len(bucket.Mounter) == 0 {
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mounter = cfg.Mounter
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}
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switch mounter {
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case s3fsMounterType:
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return newS3fsMounter(bucket, cfg)
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case goofysMounterType:
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return newGoofysMounter(bucket, cfg)
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case s3qlMounterType:
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return newS3qlMounter(bucket, cfg)
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case s3backerMounterType:
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return newS3backerMounter(bucket, cfg)
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case rcloneMounterType:
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return newRcloneMounter(bucket, cfg)
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default:
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// default to s3backer
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return newS3backerMounter(bucket, cfg)
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}
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}
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func fuseMount(path string, command string, args []string) error {
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cmd := exec.Command(command, args...)
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glog.V(3).Infof("Mounting fuse with command: %s and args: %s", command, args)
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out, err := cmd.CombinedOutput()
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if err != nil {
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return fmt.Errorf("Error fuseMount command: %s\nargs: %s\noutput: %s", command, args, out)
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}
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return waitForMount(path, 10*time.Second)
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}
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func fuseUnmount(path string) error {
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if err := mount.New("").Unmount(path); err != nil {
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return err
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}
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// as fuse quits immediately, we will try to wait until the process is done
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process, err := findFuseMountProcess(path)
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if err != nil {
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glog.Errorf("Error getting PID of fuse mount: %s", err)
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return nil
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}
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if process == nil {
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glog.Warningf("Unable to find PID of fuse mount %s, it must have finished already", path)
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return nil
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}
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glog.Infof("Found fuse pid %v of mount %s, checking if it still runs", process.Pid, path)
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return waitForProcess(process, 1)
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}
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