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https://github.com/oracle/zfssa-csi-driver.git
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Initial publication of ZFSSA CSI driver
This commit is contained in:
JEONGTAE.KIM@ORACLE.COM
279
pkg/utils/volume_id.go
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279
pkg/utils/volume_id.go
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/*
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* Copyright (c) 2021, Oracle and/or its affiliates.
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* Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl/
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*/
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package utils
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import (
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"fmt"
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"github.com/golang/protobuf/ptypes/timestamp"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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"regexp"
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"strconv"
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"strings"
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"time"
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)
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const (
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VolumeIdLen = 6
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VolumeHandleLen = 8
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SnapshotIdLen = 7
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VolumeHrefLen = 10
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SnapshotHrefLen = 12
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)
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const (
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BlockVolume string = "lun"
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MountVolume = "mnt"
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)
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const (
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ResourceNamePattern string = `^[a-zA-Z0-9_\-\.\:]+$`
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ResourceNameLength int = 64
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)
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// Volume ID
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// ---------
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// This structure is what identifies a volume (lun or filesystem).
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type VolumeId struct {
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Type string
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Zfssa string
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Pool string
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Project string
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Name string
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}
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func NewVolumeId(vType, zfssaName, pool, project, name string) *VolumeId {
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return &VolumeId{
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Type: vType,
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Zfssa: zfssaName,
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Pool: pool,
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Project: project,
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Name: name,
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}
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}
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func VolumeIdStringFromHref(zfssa, hRef string) (string, error) {
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result := strings.Split(hRef, "/")
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if len(result) < VolumeHrefLen {
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return "", status.Errorf(codes.NotFound,
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"Volume ID (%s) contains insufficient components (%d)",hRef, VolumeHrefLen)
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}
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var vType string
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switch result[8] {
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case "filesystems":
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vType = MountVolume
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case "luns":
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vType = BlockVolume
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default:
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return "", status.Errorf(codes.NotFound,"Invalid snapshot href (%s)", hRef)
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}
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return fmt.Sprintf("/%v/%v/%v/%v/%v",
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vType,
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zfssa,
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result[5],
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result[7],
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result[9]), nil
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}
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func VolumeIdFromString(volumeId string) (*VolumeId, error) {
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result := strings.Split(volumeId, "/")
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var pool, project, share string
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switch result[1] {
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case "nfs", "iscsi":
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if len(result) < VolumeHandleLen {
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return nil, status.Errorf(codes.NotFound,
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"Volume ID/Handle (%s) contains insufficient components (%d)", volumeId, VolumeHandleLen)
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}
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pool = result[4]
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project = result[6]
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share = result[7]
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default:
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if len(result) < VolumeIdLen {
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return nil, status.Errorf(codes.NotFound,
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"Volume ID (%s) contains insufficient components (%d)", volumeId, VolumeIdLen)
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}
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pool = result[3]
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project = result[4]
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share = result[5]
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}
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if !IsResourceNameValid(pool) {
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return nil, status.Errorf(codes.InvalidArgument, "pool name is invalid (%s)", pool)
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}
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if !IsResourceNameValid(project) {
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return nil, status.Errorf(codes.InvalidArgument, "project name is invalid (%s)", project)
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}
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if !IsResourceNameValid(share) {
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return nil, status.Errorf(codes.InvalidArgument, "share name is invalid (%s)", share)
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}
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return &VolumeId{
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Type: result[1],
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Zfssa: result[2],
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Pool: pool,
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Project: project,
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Name: share,
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}, nil
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}
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func (zvi *VolumeId) String() string {
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return fmt.Sprintf("/%v/%v/%v/%v/%v", zvi.Type, zvi.Zfssa, zvi.Pool, zvi.Project, zvi.Name)
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}
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func (zvi *VolumeId) IsBlock() bool {
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switch zvi.Type {
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case BlockVolume: return true
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case MountVolume: return false
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}
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return false
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}
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// Snapshot ID
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// -----------
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// This structure is what identifies a volume (lun or filesystem).
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type SnapshotId struct {
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VolumeId *VolumeId
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Name string
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}
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func NewSnapshotId(volumeId *VolumeId, snapshotName string) *SnapshotId {
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return &SnapshotId{
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VolumeId: volumeId,
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Name: snapshotName,
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}
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}
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func SnapshotIdFromString(snapshotId string) (*SnapshotId, error) {
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result := strings.Split(snapshotId, "/")
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if len(result) < SnapshotIdLen {
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return nil, status.Errorf(codes.NotFound,
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"Volume ID (%s) contains insufficient components (%d)", snapshotId, SnapshotIdLen)
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}
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return &SnapshotId{
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VolumeId: &VolumeId{
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Type: result[1],
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Zfssa: result[2],
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Pool: result[3],
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Project: result[4],
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Name: result[5] },
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Name: result[6] }, nil
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}
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func SnapshotIdFromHref(zfssa, hRef string) (*SnapshotId, error) {
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result := strings.Split(hRef, "/")
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if len(result) < SnapshotHrefLen {
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return nil, status.Errorf(codes.NotFound,
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"Snapshot ID (%s) contains insufficient components (%d)",hRef, SnapshotHrefLen)
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}
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if result[10] != "snapshots" {
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return nil, status.Errorf(codes.NotFound,"Invalid snapshot href (%s)", hRef)
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}
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var vType string
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switch result[8] {
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case "filesystems":
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vType = MountVolume
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case "luns":
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vType = BlockVolume
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default:
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return nil, status.Errorf(codes.NotFound,"Invalid snapshot href (%s)", hRef)
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}
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return &SnapshotId{
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VolumeId: &VolumeId{
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Type: vType,
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Zfssa: zfssa,
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Pool: result[5],
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Project: result[7],
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Name: result[9] },
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Name: result[11] }, nil
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}
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func SnapshotIdStringFromHref(zfssa, hRef string) (string, error) {
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result := strings.Split(hRef, "/")
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if len(result) < SnapshotHrefLen {
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return "", status.Errorf(codes.NotFound,
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"Snapshot ID (%s) contains insufficient components (%d)",hRef, SnapshotHrefLen)
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}
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if result[10] != "snapshots" {
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return "", status.Errorf(codes.NotFound,"Invalid snapshot href (%s)", hRef)
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}
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var vType string
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switch result[8] {
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case "filesystems":
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vType = MountVolume
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case "luns":
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vType = BlockVolume
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default:
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return "", status.Errorf(codes.NotFound,"Invalid snapshot href (%s)", hRef)
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}
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return fmt.Sprintf("/%v/%v/%v/%v/%v/%v",
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vType,
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zfssa,
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result[5],
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result[7],
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result[9],
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result[11]), nil
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}
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func (zsi *SnapshotId) String() string {
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return fmt.Sprintf("/%v/%v/%v/%v/%v/%v",
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zsi.VolumeId.Type,
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zsi.VolumeId.Zfssa,
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zsi.VolumeId.Pool,
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zsi.VolumeId.Project,
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zsi.VolumeId.Name,
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zsi.Name)
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}
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func (zsi *SnapshotId) GetVolumeId() *VolumeId {
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return zsi.VolumeId
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}
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func DateToUnix(date string) (*timestamp.Timestamp, error) {
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year, err := strconv.Atoi(date[0:4])
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if err == nil {
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month, err := strconv.Atoi(date[5:7])
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if err == nil {
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day, err := strconv.Atoi(date[8:10])
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if err == nil {
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hour, err := strconv.Atoi(date[11:13])
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if err == nil {
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min, err := strconv.Atoi(date[14:16])
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if err == nil {
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sec, err := strconv.Atoi(date[17:19])
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if err == nil {
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seconds := time.Date(year, time.Month(month), day, hour, min, sec,
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0, time.Local).Unix()
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return ×tamp.Timestamp{Seconds: seconds, Nanos: 0}, nil
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}
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}
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}
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}
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}
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}
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return nil, err
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}
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func IsResourceNameValid(name string) bool {
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if len(name) > ResourceNameLength {
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return false
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}
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var validResourceName = regexp.MustCompile(ResourceNamePattern).MatchString
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return validResourceName(name)
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}
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