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Merge pull request #1131 from rudyfly/volume
feature: add volumes-from for container
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| package opts | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "strings" | ||
|
|
||
| "github.com/alibaba/pouch/apis/types" | ||
| ) | ||
|
|
||
| // CheckBind is used to check the volume bind information. | ||
| func CheckBind(b string) ([]string, error) { | ||
| if strings.Count(b, ":") > 2 { | ||
| return nil, fmt.Errorf("unknown volume bind: %s", b) | ||
| } | ||
|
|
||
| arr := strings.SplitN(b, ":", 3) | ||
| switch len(arr) { | ||
| case 1: | ||
| if arr[0] == "" { | ||
| return nil, fmt.Errorf("unknown volume bind: %s", b) | ||
| } | ||
| if arr[0][:1] != "/" { | ||
| return nil, fmt.Errorf("invalid bind path: %s", arr[0]) | ||
| } | ||
| case 2, 3: | ||
| if arr[1] == "" { | ||
| return nil, fmt.Errorf("unknown volume bind: %s", b) | ||
| } | ||
| if arr[1][:1] != "/" { | ||
| return nil, fmt.Errorf("invalid bind path: %s", arr[1]) | ||
| } | ||
| default: | ||
| return nil, fmt.Errorf("unknown volume bind: %s", b) | ||
| } | ||
|
|
||
| return arr, nil | ||
| } | ||
|
|
||
| // ParseVolumesFrom is used to parse the parameter of VolumesFrom. | ||
| func ParseVolumesFrom(volume string) (string, string, error) { | ||
| if len(volume) == 0 { | ||
| return "", "", fmt.Errorf("invalid argument volumes-from") | ||
| } | ||
|
|
||
| parts := strings.Split(volume, ":") | ||
| containerID := parts[0] | ||
| mode := "" | ||
| if len(parts) > 1 { | ||
| mode = parts[1] | ||
| } | ||
|
|
||
| if containerID == "" { | ||
| return "", "", fmt.Errorf("failed to parse container's id") | ||
| } | ||
|
|
||
| return containerID, mode, nil | ||
| } | ||
|
|
||
| // ParseBindMode is used to parse the bind's mode. | ||
| func ParseBindMode(mp *types.MountPoint, mode string) error { | ||
| mp.RW = true | ||
| mp.CopyData = true | ||
|
|
||
| defaultMode := 0 | ||
| rwMode := 0 | ||
| labelMode := 0 | ||
| replaceMode := 0 | ||
| copyMode := 0 | ||
| propagationMode := 0 | ||
|
|
||
| for _, m := range strings.Split(mode, ",") { | ||
| switch m { | ||
| case "": | ||
| defaultMode++ | ||
| case "ro": | ||
| mp.RW = false | ||
| rwMode++ | ||
| case "rw": | ||
| mp.RW = true | ||
| rwMode++ | ||
| case "dr", "rr": | ||
| // direct replace mode, random replace mode | ||
| mp.Replace = m | ||
| replaceMode++ | ||
| case "z", "Z": | ||
| labelMode++ | ||
| case "nocopy": | ||
| mp.CopyData = false | ||
| copyMode++ | ||
| case "private", "rprivate", "slave", "rslave", "shared", "rshared": | ||
| mp.Propagation = m | ||
| propagationMode++ | ||
| default: | ||
| return fmt.Errorf("unknown bind mode: %s", mode) | ||
| } | ||
| } | ||
|
|
||
| if defaultMode > 1 || rwMode > 1 || replaceMode > 1 || copyMode > 1 || propagationMode > 1 { | ||
| return fmt.Errorf("invalid bind mode: %s", mode) | ||
| } | ||
|
|
||
| mp.Mode = mode | ||
| return nil | ||
| } |
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