mirror of
https://github.com/kubernetes-sigs/prometheus-adapter.git
synced 2026-04-06 17:57:51 +00:00
a293b2bf94
Travis seems to be having issues pulling deps, so we'll have to check in the vendor directory and prevent the makefile from trying to regenerate it normally.
41 lines
1.1 KiB
Go
41 lines
1.1 KiB
Go
// Copyright 2011 Google Inc. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package uuid
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import (
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"encoding/binary"
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)
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// NewUUID returns a Version 1 UUID based on the current NodeID and clock
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// sequence, and the current time. If the NodeID has not been set by SetNodeID
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// or SetNodeInterface then it will be set automatically. If the NodeID cannot
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// be set NewUUID returns nil. If clock sequence has not been set by
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// SetClockSequence then it will be set automatically. If GetTime fails to
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// return the current NewUUID returns nil.
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func NewUUID() UUID {
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if nodeID == nil {
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SetNodeInterface("")
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}
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now, seq, err := GetTime()
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if err != nil {
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return nil
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}
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uuid := make([]byte, 16)
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time_low := uint32(now & 0xffffffff)
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time_mid := uint16((now >> 32) & 0xffff)
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time_hi := uint16((now >> 48) & 0x0fff)
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time_hi |= 0x1000 // Version 1
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binary.BigEndian.PutUint32(uuid[0:], time_low)
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binary.BigEndian.PutUint16(uuid[4:], time_mid)
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binary.BigEndian.PutUint16(uuid[6:], time_hi)
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binary.BigEndian.PutUint16(uuid[8:], seq)
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copy(uuid[10:], nodeID)
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return uuid
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}
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