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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-13 11:41:41 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-13 11:41:41 +0000
commit5d920465245906e2250c288c2b1ffea608a37539 (patch)
tree8d52f82e5d4a1717f136c7e5f6c389464c403e79 /dependencies/pkg/mod/github.com/google/uuid@v1.6.0/version6.go
parentReleasing progress-linux version 1.1.1-2~progress7.99u1. (diff)
downloadicingadb-5d920465245906e2250c288c2b1ffea608a37539.tar.xz
icingadb-5d920465245906e2250c288c2b1ffea608a37539.zip
Merging upstream version 1.2.0.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dependencies/pkg/mod/github.com/google/uuid@v1.6.0/version6.go')
-rw-r--r--dependencies/pkg/mod/github.com/google/uuid@v1.6.0/version6.go56
1 files changed, 56 insertions, 0 deletions
diff --git a/dependencies/pkg/mod/github.com/google/uuid@v1.6.0/version6.go b/dependencies/pkg/mod/github.com/google/uuid@v1.6.0/version6.go
new file mode 100644
index 0000000..339a959
--- /dev/null
+++ b/dependencies/pkg/mod/github.com/google/uuid@v1.6.0/version6.go
@@ -0,0 +1,56 @@
+// 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
+}