mirror of
https://github.com/hanzoai/volume.git
synced 2026-10-01 00:48:00 +00:00
zeekay
b61441f7d7
A fork of Rancher's local-path-provisioner at v0.0.36. The behaviour is unchanged and deliberately so — a directory on the node a pod lands on is the right thing for a disk. What changes is identity. The provisioner answers to hanzo.ai/volume rather than rancher.io/local-path. That is not branding: two provisioners sharing one name race for the same claims, and a stock k3s carries the upstream one, so a cluster running both would settle our storage by chance. Data lives at /var/lib/hanzo/volume, so reading a Hanzo cluster does not mean learning another vendor's directory. Apache-2.0 as published, unaltered, with Rancher's attribution in NOTICE. The README says what this is not: durability. A volume here dies with its node. That is hanzoai/replicate's question, one layer up, and keeping the two apart is what lets the disk stay this simple.
57 lines
2.2 KiB
Go
57 lines
2.2 KiB
Go
// Copyright 2023 Google Inc. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package uuid
|
|
|
|
import "encoding/binary"
|
|
|
|
// UUID version 6 is a field-compatible version of UUIDv1, reordered for improved DB locality.
|
|
// It is expected that UUIDv6 will primarily be used in contexts where there are existing v1 UUIDs.
|
|
// Systems that do not involve legacy UUIDv1 SHOULD consider using UUIDv7 instead.
|
|
//
|
|
// see https://datatracker.ietf.org/doc/html/draft-peabody-dispatch-new-uuid-format-03#uuidv6
|
|
//
|
|
// NewV6 returns a Version 6 UUID based on the current NodeID and clock
|
|
// sequence, and the current time. If the NodeID has not been set by SetNodeID
|
|
// or SetNodeInterface then it will be set automatically. If the NodeID cannot
|
|
// be set NewV6 set NodeID is random bits automatically . If clock sequence has not been set by
|
|
// SetClockSequence then it will be set automatically. If GetTime fails to
|
|
// return the current NewV6 returns Nil and an error.
|
|
func NewV6() (UUID, error) {
|
|
var uuid UUID
|
|
now, seq, err := GetTime()
|
|
if err != nil {
|
|
return uuid, err
|
|
}
|
|
|
|
/*
|
|
0 1 2 3
|
|
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
| time_high |
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
| time_mid | time_low_and_version |
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
|clk_seq_hi_res | clk_seq_low | node (0-1) |
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
| node (2-5) |
|
|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|
|
*/
|
|
|
|
binary.BigEndian.PutUint64(uuid[0:], uint64(now))
|
|
binary.BigEndian.PutUint16(uuid[8:], seq)
|
|
|
|
uuid[6] = 0x60 | (uuid[6] & 0x0F)
|
|
uuid[8] = 0x80 | (uuid[8] & 0x3F)
|
|
|
|
nodeMu.Lock()
|
|
if nodeID == zeroID {
|
|
setNodeInterface("")
|
|
}
|
|
copy(uuid[10:], nodeID[:])
|
|
nodeMu.Unlock()
|
|
|
|
return uuid, nil
|
|
}
|