Replace uuid dependency with internal library

Signed-off-by: Stephen J Day <stephen.day@docker.com>

Godeps/Godeps.json

@@ -5,11 +5,6 @@
 		"./..."
 	],
 	"Deps": [
-		{
-			"ImportPath": "code.google.com/p/go-uuid/uuid",
-			"Comment": "null-15",
-			"Rev": "35bc42037350f0078e3c974c6ea690f1926603ab"
-		},
 		{
 			"ImportPath": "github.com/AdRoll/goamz/aws",
 			"Rev": "cc210f45dcb9889c2769a274522be2bf70edfb99"

Godeps/_workspace/src/code.google.com/p/go-uuid/uuid/LICENSE

@@ -1,27 +0,0 @@
-Copyright (c) 2009,2014 Google Inc. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-   * Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-   * Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
-   * Neither the name of Google Inc. nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Godeps/_workspace/src/code.google.com/p/go-uuid/uuid/dce.go

@@ -1,84 +0,0 @@
-// Copyright 2011 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"
-	"fmt"
-	"os"
-)
-
-// A Domain represents a Version 2 domain
-type Domain byte
-
-// Domain constants for DCE Security (Version 2) UUIDs.
-const (
-	Person = Domain(0)
-	Group  = Domain(1)
-	Org    = Domain(2)
-)
-
-// NewDCESecurity returns a DCE Security (Version 2) UUID.
-//
-// The domain should be one of Person, Group or Org.
-// On a POSIX system the id should be the users UID for the Person
-// domain and the users GID for the Group.  The meaning of id for
-// the domain Org or on non-POSIX systems is site defined.
-//
-// For a given domain/id pair the same token may be returned for up to
-// 7 minutes and 10 seconds.
-func NewDCESecurity(domain Domain, id uint32) UUID {
-	uuid := NewUUID()
-	if uuid != nil {
-		uuid[6] = (uuid[6] & 0x0f) | 0x20 // Version 2
-		uuid[9] = byte(domain)
-		binary.BigEndian.PutUint32(uuid[0:], id)
-	}
-	return uuid
-}
-
-// NewDCEPerson returns a DCE Security (Version 2) UUID in the person
-// domain with the id returned by os.Getuid.
-//
-//  NewDCEPerson(Person, uint32(os.Getuid()))
-func NewDCEPerson() UUID {
-	return NewDCESecurity(Person, uint32(os.Getuid()))
-}
-
-// NewDCEGroup returns a DCE Security (Version 2) UUID in the group
-// domain with the id returned by os.Getgid.
-//
-//  NewDCEGroup(Group, uint32(os.Getgid()))
-func NewDCEGroup() UUID {
-	return NewDCESecurity(Group, uint32(os.Getgid()))
-}
-
-// Domain returns the domain for a Version 2 UUID or false.
-func (uuid UUID) Domain() (Domain, bool) {
-	if v, _ := uuid.Version(); v != 2 {
-		return 0, false
-	}
-	return Domain(uuid[9]), true
-}
-
-// Id returns the id for a Version 2 UUID or false.
-func (uuid UUID) Id() (uint32, bool) {
-	if v, _ := uuid.Version(); v != 2 {
-		return 0, false
-	}
-	return binary.BigEndian.Uint32(uuid[0:4]), true
-}
-
-func (d Domain) String() string {
-	switch d {
-	case Person:
-		return "Person"
-	case Group:
-		return "Group"
-	case Org:
-		return "Org"
-	}
-	return fmt.Sprintf("Domain%d", int(d))
-}

Godeps/_workspace/src/code.google.com/p/go-uuid/uuid/doc.go

@@ -1,8 +0,0 @@
-// Copyright 2011 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.
-
-// The uuid package generates and inspects UUIDs.
-//
-// UUIDs are based on RFC 4122 and DCE 1.1: Authentication and Security Services.
-package uuid

Godeps/_workspace/src/code.google.com/p/go-uuid/uuid/hash.go

@@ -1,53 +0,0 @@
-// Copyright 2011 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 (
-	"crypto/md5"
-	"crypto/sha1"
-	"hash"
-)
-
-// Well known Name Space IDs and UUIDs
-var (
-	NameSpace_DNS  = Parse("6ba7b810-9dad-11d1-80b4-00c04fd430c8")
-	NameSpace_URL  = Parse("6ba7b811-9dad-11d1-80b4-00c04fd430c8")
-	NameSpace_OID  = Parse("6ba7b812-9dad-11d1-80b4-00c04fd430c8")
-	NameSpace_X500 = Parse("6ba7b814-9dad-11d1-80b4-00c04fd430c8")
-	NIL            = Parse("00000000-0000-0000-0000-000000000000")
-)
-
-// NewHash returns a new UUID dervied from the hash of space concatenated with
-// data generated by h.  The hash should be at least 16 byte in length.  The
-// first 16 bytes of the hash are used to form the UUID.  The version of the
-// UUID will be the lower 4 bits of version.  NewHash is used to implement
-// NewMD5 and NewSHA1.
-func NewHash(h hash.Hash, space UUID, data []byte, version int) UUID {
-	h.Reset()
-	h.Write(space)
-	h.Write([]byte(data))
-	s := h.Sum(nil)
-	uuid := make([]byte, 16)
-	copy(uuid, s)
-	uuid[6] = (uuid[6] & 0x0f) | uint8((version&0xf)<<4)
-	uuid[8] = (uuid[8] & 0x3f) | 0x80 // RFC 4122 variant
-	return uuid
-}
-
-// NewMD5 returns a new MD5 (Version 3) UUID based on the
-// supplied name space and data.
-//
-//  NewHash(md5.New(), space, data, 3)
-func NewMD5(space UUID, data []byte) UUID {
-	return NewHash(md5.New(), space, data, 3)
-}
-
-// NewSHA1 returns a new SHA1 (Version 5) UUID based on the
-// supplied name space and data.
-//
-//  NewHash(sha1.New(), space, data, 5)
-func NewSHA1(space UUID, data []byte) UUID {
-	return NewHash(sha1.New(), space, data, 5)
-}

Godeps/_workspace/src/code.google.com/p/go-uuid/uuid/json.go

@@ -1,30 +0,0 @@
-// Copyright 2014 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 "errors"
-
-func (u UUID) MarshalJSON() ([]byte, error) {
-	if len(u) == 0 {
-		return []byte(`""`), nil
-	}
-	return []byte(`"` + u.String() + `"`), nil
-}
-
-func (u *UUID) UnmarshalJSON(data []byte) error {
-	if len(data) == 0 || string(data) == `""` {
-		return nil
-	}
-	if len(data) < 2 || data[0] != '"' || data[len(data)-1] != '"' {
-		return errors.New("invalid UUID format")
-	}
-	data = data[1 : len(data)-1]
-	uu := Parse(string(data))
-	if uu == nil {
-		return errors.New("invalid UUID format")
-	}
-	*u = uu
-	return nil
-}

Godeps/_workspace/src/code.google.com/p/go-uuid/uuid/json_test.go

@@ -1,32 +0,0 @@
-// Copyright 2014 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/json"
-	"reflect"
-	"testing"
-)
-
-var testUUID = Parse("f47ac10b-58cc-0372-8567-0e02b2c3d479")
-
-func TestJSON(t *testing.T) {
-	type S struct {
-		ID1 UUID
-		ID2 UUID
-	}
-	s1 := S{ID1: testUUID}
-	data, err := json.Marshal(&s1)
-	if err != nil {
-		t.Fatal(err)
-	}
-	var s2 S
-	if err := json.Unmarshal(data, &s2); err != nil {
-		t.Fatal(err)
-	}
-	if !reflect.DeepEqual(&s1, &s2) {
-		t.Errorf("got %#v, want %#v", s2, s1)
-	}
-}

Godeps/_workspace/src/code.google.com/p/go-uuid/uuid/node.go

@@ -1,101 +0,0 @@
-// Copyright 2011 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 "net"
-
-var (
-	interfaces []net.Interface // cached list of interfaces
-	ifname     string          // name of interface being used
-	nodeID     []byte          // hardware for version 1 UUIDs
-)
-
-// NodeInterface returns the name of the interface from which the NodeID was
-// derived.  The interface "user" is returned if the NodeID was set by
-// SetNodeID.
-func NodeInterface() string {
-	return ifname
-}
-
-// SetNodeInterface selects the hardware address to be used for Version 1 UUIDs.
-// If name is "" then the first usable interface found will be used or a random
-// Node ID will be generated.  If a named interface cannot be found then false
-// is returned.
-//
-// SetNodeInterface never fails when name is "".
-func SetNodeInterface(name string) bool {
-	if interfaces == nil {
-		var err error
-		interfaces, err = net.Interfaces()
-		if err != nil && name != "" {
-			return false
-		}
-	}
-
-	for _, ifs := range interfaces {
-		if len(ifs.HardwareAddr) >= 6 && (name == "" || name == ifs.Name) {
-			if setNodeID(ifs.HardwareAddr) {
-				ifname = ifs.Name
-				return true
-			}
-		}
-	}
-
-	// We found no interfaces with a valid hardware address.  If name
-	// does not specify a specific interface generate a random Node ID
-	// (section 4.1.6)
-	if name == "" {
-		if nodeID == nil {
-			nodeID = make([]byte, 6)
-		}
-		randomBits(nodeID)
-		return true
-	}
-	return false
-}
-
-// NodeID returns a slice of a copy of the current Node ID, setting the Node ID
-// if not already set.
-func NodeID() []byte {
-	if nodeID == nil {
-		SetNodeInterface("")
-	}
-	nid := make([]byte, 6)
-	copy(nid, nodeID)
-	return nid
-}
-
-// SetNodeID sets the Node ID to be used for Version 1 UUIDs.  The first 6 bytes
-// of id are used.  If id is less than 6 bytes then false is returned and the
-// Node ID is not set.
-func SetNodeID(id []byte) bool {
-	if setNodeID(id) {
-		ifname = "user"
-		return true
-	}
-	return false
-}
-
-func setNodeID(id []byte) bool {
-	if len(id) < 6 {
-		return false
-	}
-	if nodeID == nil {
-		nodeID = make([]byte, 6)
-	}
-	copy(nodeID, id)
-	return true
-}
-
-// NodeID returns the 6 byte node id encoded in uuid.  It returns nil if uuid is
-// not valid.  The NodeID is only well defined for version 1 and 2 UUIDs.
-func (uuid UUID) NodeID() []byte {
-	if len(uuid) != 16 {
-		return nil
-	}
-	node := make([]byte, 6)
-	copy(node, uuid[10:])
-	return node
-}

Godeps/_workspace/src/code.google.com/p/go-uuid/uuid/seq_test.go

@@ -1,66 +0,0 @@
-// Copyright 2014 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 (
-	"flag"
-	"runtime"
-	"testing"
-	"time"
-)
-
-// This test is only run when --regressions is passed on the go test line.
-var regressions = flag.Bool("regressions", false, "run uuid regression tests")
-
-// TestClockSeqRace tests for a particular race condition of returning two
-// identical Version1 UUIDs.  The duration of 1 minute was chosen as the race
-// condition, before being fixed, nearly always occured in under 30 seconds.
-func TestClockSeqRace(t *testing.T) {
-	if !*regressions {
-		t.Skip("skipping regression tests")
-	}
-	duration := time.Minute
-
-	done := make(chan struct{})
-	defer close(done)
-
-	ch := make(chan UUID, 10000)
-	ncpu := runtime.NumCPU()
-	switch ncpu {
-	case 0, 1:
-		// We can't run the test effectively.
-		t.Skip("skipping race test, only one CPU detected")
-		return
-	default:
-		runtime.GOMAXPROCS(ncpu)
-	}
-	for i := 0; i < ncpu; i++ {
-		go func() {
-			for {
-				select {
-				case <-done:
-					return
-				case ch <- NewUUID():
-				}
-			}
-		}()
-	}
-
-	uuids := make(map[string]bool)
-	cnt := 0
-	start := time.Now()
-	for u := range ch {
-		s := u.String()
-		if uuids[s] {
-			t.Errorf("duplicate uuid after %d in %v: %s", cnt, time.Since(start), s)
-			return
-		}
-		uuids[s] = true
-		if time.Since(start) > duration {
-			return
-		}
-		cnt++
-	}
-}

Godeps/_workspace/src/code.google.com/p/go-uuid/uuid/time.go

@@ -1,132 +0,0 @@
-// Copyright 2014 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"
-	"sync"
-	"time"
-)
-
-// A Time represents a time as the number of 100's of nanoseconds since 15 Oct
-// 1582.
-type Time int64
-
-const (
-	lillian    = 2299160          // Julian day of 15 Oct 1582
-	unix       = 2440587          // Julian day of 1 Jan 1970
-	epoch      = unix - lillian   // Days between epochs
-	g1582      = epoch * 86400    // seconds between epochs
-	g1582ns100 = g1582 * 10000000 // 100s of a nanoseconds between epochs
-)
-
-var (
-	mu        sync.Mutex
-	lasttime  uint64 // last time we returned
-	clock_seq uint16 // clock sequence for this run
-
-	timeNow = time.Now // for testing
-)
-
-// UnixTime converts t the number of seconds and nanoseconds using the Unix
-// epoch of 1 Jan 1970.
-func (t Time) UnixTime() (sec, nsec int64) {
-	sec = int64(t - g1582ns100)
-	nsec = (sec % 10000000) * 100
-	sec /= 10000000
-	return sec, nsec
-}
-
-// GetTime returns the current Time (100s of nanoseconds since 15 Oct 1582) and
-// clock sequence as well as adjusting the clock sequence as needed.  An error
-// is returned if the current time cannot be determined.
-func GetTime() (Time, uint16, error) {
-	defer mu.Unlock()
-	mu.Lock()
-	return getTime()
-}
-
-func getTime() (Time, uint16, error) {
-	t := timeNow()
-
-	// If we don't have a clock sequence already, set one.
-	if clock_seq == 0 {
-		setClockSequence(-1)
-	}
-	now := uint64(t.UnixNano()/100) + g1582ns100
-
-	// If time has gone backwards with this clock sequence then we
-	// increment the clock sequence
-	if now <= lasttime {
-		clock_seq = ((clock_seq + 1) & 0x3fff) | 0x8000
-	}
-	lasttime = now
-	return Time(now), clock_seq, nil
-}
-
-// ClockSequence returns the current clock sequence, generating one if not
-// already set.  The clock sequence is only used for Version 1 UUIDs.
-//
-// The uuid package does not use global static storage for the clock sequence or
-// the last time a UUID was generated.  Unless SetClockSequence a new random
-// clock sequence is generated the first time a clock sequence is requested by
-// ClockSequence, GetTime, or NewUUID.  (section 4.2.1.1) sequence is generated
-// for
-func ClockSequence() int {
-	defer mu.Unlock()
-	mu.Lock()
-	return clockSequence()
-}
-
-func clockSequence() int {
-	if clock_seq == 0 {
-		setClockSequence(-1)
-	}
-	return int(clock_seq & 0x3fff)
-}
-
-// SetClockSeq sets the clock sequence to the lower 14 bits of seq.  Setting to
-// -1 causes a new sequence to be generated.
-func SetClockSequence(seq int) {
-	defer mu.Unlock()
-	mu.Lock()
-	setClockSequence(seq)
-}
-
-func setClockSequence(seq int) {
-	if seq == -1 {
-		var b [2]byte
-		randomBits(b[:]) // clock sequence
-		seq = int(b[0])<<8 | int(b[1])
-	}
-	old_seq := clock_seq
-	clock_seq = uint16(seq&0x3fff) | 0x8000 // Set our variant
-	if old_seq != clock_seq {
-		lasttime = 0
-	}
-}
-
-// Time returns the time in 100s of nanoseconds since 15 Oct 1582 encoded in
-// uuid.  It returns false if uuid is not valid.  The time is only well defined
-// for version 1 and 2 UUIDs.
-func (uuid UUID) Time() (Time, bool) {
-	if len(uuid) != 16 {
-		return 0, false
-	}
-	time := int64(binary.BigEndian.Uint32(uuid[0:4]))
-	time |= int64(binary.BigEndian.Uint16(uuid[4:6])) << 32
-	time |= int64(binary.BigEndian.Uint16(uuid[6:8])&0xfff) << 48
-	return Time(time), true
-}
-
-// ClockSequence returns the clock sequence encoded in uuid.  It returns false
-// if uuid is not valid.  The clock sequence is only well defined for version 1
-// and 2 UUIDs.
-func (uuid UUID) ClockSequence() (int, bool) {
-	if len(uuid) != 16 {
-		return 0, false
-	}
-	return int(binary.BigEndian.Uint16(uuid[8:10])) & 0x3fff, true
-}

Godeps/_workspace/src/code.google.com/p/go-uuid/uuid/util.go

@@ -1,43 +0,0 @@
-// Copyright 2011 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 (
-	"io"
-)
-
-// randomBits completely fills slice b with random data.
-func randomBits(b []byte) {
-	if _, err := io.ReadFull(rander, b); err != nil {
-		panic(err.Error()) // rand should never fail
-	}
-}
-
-// xvalues returns the value of a byte as a hexadecimal digit or 255.
-var xvalues = []byte{
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 255, 255, 255, 255, 255, 255,
-	255, 10, 11, 12, 13, 14, 15, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 10, 11, 12, 13, 14, 15, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-	255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
-}
-
-// xtob converts the the first two hex bytes of x into a byte.
-func xtob(x string) (byte, bool) {
-	b1 := xvalues[x[0]]
-	b2 := xvalues[x[1]]
-	return (b1 << 4) | b2, b1 != 255 && b2 != 255
-}

Godeps/_workspace/src/code.google.com/p/go-uuid/uuid/uuid.go

@@ -1,163 +0,0 @@
-// Copyright 2011 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 (
-	"bytes"
-	"crypto/rand"
-	"fmt"
-	"io"
-	"strings"
-)
-
-// A UUID is a 128 bit (16 byte) Universal Unique IDentifier as defined in RFC
-// 4122.
-type UUID []byte
-
-// A Version represents a UUIDs version.
-type Version byte
-
-// A Variant represents a UUIDs variant.
-type Variant byte
-
-// Constants returned by Variant.
-const (
-	Invalid   = Variant(iota) // Invalid UUID
-	RFC4122                   // The variant specified in RFC4122
-	Reserved                  // Reserved, NCS backward compatibility.
-	Microsoft                 // Reserved, Microsoft Corporation backward compatibility.
-	Future                    // Reserved for future definition.
-)
-
-var rander = rand.Reader // random function
-
-// New returns a new random (version 4) UUID as a string.  It is a convenience
-// function for NewRandom().String().
-func New() string {
-	return NewRandom().String()
-}
-
-// Parse decodes s into a UUID or returns nil.  Both the UUID form of
-// xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx and
-// urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx are decoded.
-func Parse(s string) UUID {
-	if len(s) == 36+9 {
-		if strings.ToLower(s[:9]) != "urn:uuid:" {
-			return nil
-		}
-		s = s[9:]
-	} else if len(s) != 36 {
-		return nil
-	}
-	if s[8] != '-' || s[13] != '-' || s[18] != '-' || s[23] != '-' {
-		return nil
-	}
-	uuid := make([]byte, 16)
-	for i, x := range []int{
-		0, 2, 4, 6,
-		9, 11,
-		14, 16,
-		19, 21,
-		24, 26, 28, 30, 32, 34} {
-		if v, ok := xtob(s[x:]); !ok {
-			return nil
-		} else {
-			uuid[i] = v
-		}
-	}
-	return uuid
-}
-
-// Equal returns true if uuid1 and uuid2 are equal.
-func Equal(uuid1, uuid2 UUID) bool {
-	return bytes.Equal(uuid1, uuid2)
-}
-
-// String returns the string form of uuid, xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
-// , or "" if uuid is invalid.
-func (uuid UUID) String() string {
-	if uuid == nil || len(uuid) != 16 {
-		return ""
-	}
-	b := []byte(uuid)
-	return fmt.Sprintf("%08x-%04x-%04x-%04x-%012x",
-		b[:4], b[4:6], b[6:8], b[8:10], b[10:])
-}
-
-// URN returns the RFC 2141 URN form of uuid,
-// urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx,  or "" if uuid is invalid.
-func (uuid UUID) URN() string {
-	if uuid == nil || len(uuid) != 16 {
-		return ""
-	}
-	b := []byte(uuid)
-	return fmt.Sprintf("urn:uuid:%08x-%04x-%04x-%04x-%012x",
-		b[:4], b[4:6], b[6:8], b[8:10], b[10:])
-}
-
-// Variant returns the variant encoded in uuid.  It returns Invalid if
-// uuid is invalid.
-func (uuid UUID) Variant() Variant {
-	if len(uuid) != 16 {
-		return Invalid
-	}
-	switch {
-	case (uuid[8] & 0xc0) == 0x80:
-		return RFC4122
-	case (uuid[8] & 0xe0) == 0xc0:
-		return Microsoft
-	case (uuid[8] & 0xe0) == 0xe0:
-		return Future
-	default:
-		return Reserved
-	}
-	panic("unreachable")
-}
-
-// Version returns the verison of uuid.  It returns false if uuid is not
-// valid.
-func (uuid UUID) Version() (Version, bool) {
-	if len(uuid) != 16 {
-		return 0, false
-	}
-	return Version(uuid[6] >> 4), true
-}
-
-func (v Version) String() string {
-	if v > 15 {
-		return fmt.Sprintf("BAD_VERSION_%d", v)
-	}
-	return fmt.Sprintf("VERSION_%d", v)
-}
-
-func (v Variant) String() string {
-	switch v {
-	case RFC4122:
-		return "RFC4122"
-	case Reserved:
-		return "Reserved"
-	case Microsoft:
-		return "Microsoft"
-	case Future:
-		return "Future"
-	case Invalid:
-		return "Invalid"
-	}
-	return fmt.Sprintf("BadVariant%d", int(v))
-}
-
-// SetRand sets the random number generator to r, which implents io.Reader.
-// If r.Read returns an error when the package requests random data then
-// a panic will be issued.
-//
-// Calling SetRand with nil sets the random number generator to the default
-// generator.
-func SetRand(r io.Reader) {
-	if r == nil {
-		rander = rand.Reader
-		return
-	}
-	rander = r
-}

Godeps/_workspace/src/code.google.com/p/go-uuid/uuid/uuid_test.go

@@ -1,390 +0,0 @@
-// Copyright 2011 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 (
-	"bytes"
-	"fmt"
-	"os"
-	"strings"
-	"testing"
-	"time"
-)
-
-type test struct {
-	in      string
-	version Version
-	variant Variant
-	isuuid  bool
-}
-
-var tests = []test{
-	{"f47ac10b-58cc-0372-8567-0e02b2c3d479", 0, RFC4122, true},
-	{"f47ac10b-58cc-1372-8567-0e02b2c3d479", 1, RFC4122, true},
-	{"f47ac10b-58cc-2372-8567-0e02b2c3d479", 2, RFC4122, true},
-	{"f47ac10b-58cc-3372-8567-0e02b2c3d479", 3, RFC4122, true},
-	{"f47ac10b-58cc-4372-8567-0e02b2c3d479", 4, RFC4122, true},
-	{"f47ac10b-58cc-5372-8567-0e02b2c3d479", 5, RFC4122, true},
-	{"f47ac10b-58cc-6372-8567-0e02b2c3d479", 6, RFC4122, true},
-	{"f47ac10b-58cc-7372-8567-0e02b2c3d479", 7, RFC4122, true},
-	{"f47ac10b-58cc-8372-8567-0e02b2c3d479", 8, RFC4122, true},
-	{"f47ac10b-58cc-9372-8567-0e02b2c3d479", 9, RFC4122, true},
-	{"f47ac10b-58cc-a372-8567-0e02b2c3d479", 10, RFC4122, true},
-	{"f47ac10b-58cc-b372-8567-0e02b2c3d479", 11, RFC4122, true},
-	{"f47ac10b-58cc-c372-8567-0e02b2c3d479", 12, RFC4122, true},
-	{"f47ac10b-58cc-d372-8567-0e02b2c3d479", 13, RFC4122, true},
-	{"f47ac10b-58cc-e372-8567-0e02b2c3d479", 14, RFC4122, true},
-	{"f47ac10b-58cc-f372-8567-0e02b2c3d479", 15, RFC4122, true},
-
-	{"urn:uuid:f47ac10b-58cc-4372-0567-0e02b2c3d479", 4, Reserved, true},
-	{"URN:UUID:f47ac10b-58cc-4372-0567-0e02b2c3d479", 4, Reserved, true},
-	{"f47ac10b-58cc-4372-0567-0e02b2c3d479", 4, Reserved, true},
-	{"f47ac10b-58cc-4372-1567-0e02b2c3d479", 4, Reserved, true},
-	{"f47ac10b-58cc-4372-2567-0e02b2c3d479", 4, Reserved, true},
-	{"f47ac10b-58cc-4372-3567-0e02b2c3d479", 4, Reserved, true},
-	{"f47ac10b-58cc-4372-4567-0e02b2c3d479", 4, Reserved, true},
-	{"f47ac10b-58cc-4372-5567-0e02b2c3d479", 4, Reserved, true},
-	{"f47ac10b-58cc-4372-6567-0e02b2c3d479", 4, Reserved, true},
-	{"f47ac10b-58cc-4372-7567-0e02b2c3d479", 4, Reserved, true},
-	{"f47ac10b-58cc-4372-8567-0e02b2c3d479", 4, RFC4122, true},
-	{"f47ac10b-58cc-4372-9567-0e02b2c3d479", 4, RFC4122, true},
-	{"f47ac10b-58cc-4372-a567-0e02b2c3d479", 4, RFC4122, true},
-	{"f47ac10b-58cc-4372-b567-0e02b2c3d479", 4, RFC4122, true},
-	{"f47ac10b-58cc-4372-c567-0e02b2c3d479", 4, Microsoft, true},
-	{"f47ac10b-58cc-4372-d567-0e02b2c3d479", 4, Microsoft, true},
-	{"f47ac10b-58cc-4372-e567-0e02b2c3d479", 4, Future, true},
-	{"f47ac10b-58cc-4372-f567-0e02b2c3d479", 4, Future, true},
-
-	{"f47ac10b158cc-5372-a567-0e02b2c3d479", 0, Invalid, false},
-	{"f47ac10b-58cc25372-a567-0e02b2c3d479", 0, Invalid, false},
-	{"f47ac10b-58cc-53723a567-0e02b2c3d479", 0, Invalid, false},
-	{"f47ac10b-58cc-5372-a56740e02b2c3d479", 0, Invalid, false},
-	{"f47ac10b-58cc-5372-a567-0e02-2c3d479", 0, Invalid, false},
-	{"g47ac10b-58cc-4372-a567-0e02b2c3d479", 0, Invalid, false},
-}
-
-var constants = []struct {
-	c    interface{}
-	name string
-}{
-	{Person, "Person"},
-	{Group, "Group"},
-	{Org, "Org"},
-	{Invalid, "Invalid"},
-	{RFC4122, "RFC4122"},
-	{Reserved, "Reserved"},
-	{Microsoft, "Microsoft"},
-	{Future, "Future"},
-	{Domain(17), "Domain17"},
-	{Variant(42), "BadVariant42"},
-}
-
-func testTest(t *testing.T, in string, tt test) {
-	uuid := Parse(in)
-	if ok := (uuid != nil); ok != tt.isuuid {
-		t.Errorf("Parse(%s) got %v expected %v\b", in, ok, tt.isuuid)
-	}
-	if uuid == nil {
-		return
-	}
-
-	if v := uuid.Variant(); v != tt.variant {
-		t.Errorf("Variant(%s) got %d expected %d\b", in, v, tt.variant)
-	}
-	if v, _ := uuid.Version(); v != tt.version {
-		t.Errorf("Version(%s) got %d expected %d\b", in, v, tt.version)
-	}
-}
-
-func TestUUID(t *testing.T) {
-	for _, tt := range tests {
-		testTest(t, tt.in, tt)
-		testTest(t, strings.ToUpper(tt.in), tt)
-	}
-}
-
-func TestConstants(t *testing.T) {
-	for x, tt := range constants {
-		v, ok := tt.c.(fmt.Stringer)
-		if !ok {
-			t.Errorf("%x: %v: not a stringer", x, v)
-		} else if s := v.String(); s != tt.name {
-			v, _ := tt.c.(int)
-			t.Errorf("%x: Constant %T:%d gives %q, expected %q\n", x, tt.c, v, s, tt.name)
-		}
-	}
-}
-
-func TestRandomUUID(t *testing.T) {
-	m := make(map[string]bool)
-	for x := 1; x < 32; x++ {
-		uuid := NewRandom()
-		s := uuid.String()
-		if m[s] {
-			t.Errorf("NewRandom returned duplicated UUID %s\n", s)
-		}
-		m[s] = true
-		if v, _ := uuid.Version(); v != 4 {
-			t.Errorf("Random UUID of version %s\n", v)
-		}
-		if uuid.Variant() != RFC4122 {
-			t.Errorf("Random UUID is variant %d\n", uuid.Variant())
-		}
-	}
-}
-
-func TestNew(t *testing.T) {
-	m := make(map[string]bool)
-	for x := 1; x < 32; x++ {
-		s := New()
-		if m[s] {
-			t.Errorf("New returned duplicated UUID %s\n", s)
-		}
-		m[s] = true
-		uuid := Parse(s)
-		if uuid == nil {
-			t.Errorf("New returned %q which does not decode\n", s)
-			continue
-		}
-		if v, _ := uuid.Version(); v != 4 {
-			t.Errorf("Random UUID of version %s\n", v)
-		}
-		if uuid.Variant() != RFC4122 {
-			t.Errorf("Random UUID is variant %d\n", uuid.Variant())
-		}
-	}
-}
-
-func clockSeq(t *testing.T, uuid UUID) int {
-	seq, ok := uuid.ClockSequence()
-	if !ok {
-		t.Fatalf("%s: invalid clock sequence\n", uuid)
-	}
-	return seq
-}
-
-func TestClockSeq(t *testing.T) {
-	// Fake time.Now for this test to return a monotonically advancing time; restore it at end.
-	defer func(orig func() time.Time) { timeNow = orig }(timeNow)
-	monTime := time.Now()
-	timeNow = func() time.Time {
-		monTime = monTime.Add(1 * time.Second)
-		return monTime
-	}
-
-	SetClockSequence(-1)
-	uuid1 := NewUUID()
-	uuid2 := NewUUID()
-
-	if clockSeq(t, uuid1) != clockSeq(t, uuid2) {
-		t.Errorf("clock sequence %d != %d\n", clockSeq(t, uuid1), clockSeq(t, uuid2))
-	}
-
-	SetClockSequence(-1)
-	uuid2 = NewUUID()
-
-	// Just on the very off chance we generated the same sequence
-	// two times we try again.
-	if clockSeq(t, uuid1) == clockSeq(t, uuid2) {
-		SetClockSequence(-1)
-		uuid2 = NewUUID()
-	}
-	if clockSeq(t, uuid1) == clockSeq(t, uuid2) {
-		t.Errorf("Duplicate clock sequence %d\n", clockSeq(t, uuid1))
-	}
-
-	SetClockSequence(0x1234)
-	uuid1 = NewUUID()
-	if seq := clockSeq(t, uuid1); seq != 0x1234 {
-		t.Errorf("%s: expected seq 0x1234 got 0x%04x\n", uuid1, seq)
-	}
-}
-
-func TestCoding(t *testing.T) {
-	text := "7d444840-9dc0-11d1-b245-5ffdce74fad2"
-	urn := "urn:uuid:7d444840-9dc0-11d1-b245-5ffdce74fad2"
-	data := UUID{
-		0x7d, 0x44, 0x48, 0x40,
-		0x9d, 0xc0,
-		0x11, 0xd1,
-		0xb2, 0x45,
-		0x5f, 0xfd, 0xce, 0x74, 0xfa, 0xd2,
-	}
-	if v := data.String(); v != text {
-		t.Errorf("%x: encoded to %s, expected %s\n", data, v, text)
-	}
-	if v := data.URN(); v != urn {
-		t.Errorf("%x: urn is %s, expected %s\n", data, v, urn)
-	}
-
-	uuid := Parse(text)
-	if !Equal(uuid, data) {
-		t.Errorf("%s: decoded to %s, expected %s\n", text, uuid, data)
-	}
-}
-
-func TestVersion1(t *testing.T) {
-	uuid1 := NewUUID()
-	uuid2 := NewUUID()
-
-	if Equal(uuid1, uuid2) {
-		t.Errorf("%s:duplicate uuid\n", uuid1)
-	}
-	if v, _ := uuid1.Version(); v != 1 {
-		t.Errorf("%s: version %s expected 1\n", uuid1, v)
-	}
-	if v, _ := uuid2.Version(); v != 1 {
-		t.Errorf("%s: version %s expected 1\n", uuid2, v)
-	}
-	n1 := uuid1.NodeID()
-	n2 := uuid2.NodeID()
-	if !bytes.Equal(n1, n2) {
-		t.Errorf("Different nodes %x != %x\n", n1, n2)
-	}
-	t1, ok := uuid1.Time()
-	if !ok {
-		t.Errorf("%s: invalid time\n", uuid1)
-	}
-	t2, ok := uuid2.Time()
-	if !ok {
-		t.Errorf("%s: invalid time\n", uuid2)
-	}
-	q1, ok := uuid1.ClockSequence()
-	if !ok {
-		t.Errorf("%s: invalid clock sequence\n", uuid1)
-	}
-	q2, ok := uuid2.ClockSequence()
-	if !ok {
-		t.Errorf("%s: invalid clock sequence", uuid2)
-	}
-
-	switch {
-	case t1 == t2 && q1 == q2:
-		t.Errorf("time stopped\n")
-	case t1 > t2 && q1 == q2:
-		t.Errorf("time reversed\n")
-	case t1 < t2 && q1 != q2:
-		t.Errorf("clock sequence chaned unexpectedly\n")
-	}
-}
-
-func TestNodeAndTime(t *testing.T) {
-	// Time is February 5, 1998 12:30:23.136364800 AM GMT
-
-	uuid := Parse("7d444840-9dc0-11d1-b245-5ffdce74fad2")
-	node := []byte{0x5f, 0xfd, 0xce, 0x74, 0xfa, 0xd2}
-
-	ts, ok := uuid.Time()
-	if ok {
-		c := time.Unix(ts.UnixTime())
-		want := time.Date(1998, 2, 5, 0, 30, 23, 136364800, time.UTC)
-		if !c.Equal(want) {
-			t.Errorf("Got time %v, want %v", c, want)
-		}
-	} else {
-		t.Errorf("%s: bad time\n", uuid)
-	}
-	if !bytes.Equal(node, uuid.NodeID()) {
-		t.Errorf("Expected node %v got %v\n", node, uuid.NodeID())
-	}
-}
-
-func TestMD5(t *testing.T) {
-	uuid := NewMD5(NameSpace_DNS, []byte("python.org")).String()
-	want := "6fa459ea-ee8a-3ca4-894e-db77e160355e"
-	if uuid != want {
-		t.Errorf("MD5: got %q expected %q\n", uuid, want)
-	}
-}
-
-func TestSHA1(t *testing.T) {
-	uuid := NewSHA1(NameSpace_DNS, []byte("python.org")).String()
-	want := "886313e1-3b8a-5372-9b90-0c9aee199e5d"
-	if uuid != want {
-		t.Errorf("SHA1: got %q expected %q\n", uuid, want)
-	}
-}
-
-func TestNodeID(t *testing.T) {
-	nid := []byte{1, 2, 3, 4, 5, 6}
-	SetNodeInterface("")
-	s := NodeInterface()
-	if s == "" || s == "user" {
-		t.Errorf("NodeInterface %q after SetInteface\n", s)
-	}
-	node1 := NodeID()
-	if node1 == nil {
-		t.Errorf("NodeID nil after SetNodeInterface\n", s)
-	}
-	SetNodeID(nid)
-	s = NodeInterface()
-	if s != "user" {
-		t.Errorf("Expected NodeInterface %q got %q\n", "user", s)
-	}
-	node2 := NodeID()
-	if node2 == nil {
-		t.Errorf("NodeID nil after SetNodeID\n", s)
-	}
-	if bytes.Equal(node1, node2) {
-		t.Errorf("NodeID not changed after SetNodeID\n", s)
-	} else if !bytes.Equal(nid, node2) {
-		t.Errorf("NodeID is %x, expected %x\n", node2, nid)
-	}
-}
-
-func testDCE(t *testing.T, name string, uuid UUID, domain Domain, id uint32) {
-	if uuid == nil {
-		t.Errorf("%s failed\n", name)
-		return
-	}
-	if v, _ := uuid.Version(); v != 2 {
-		t.Errorf("%s: %s: expected version 2, got %s\n", name, uuid, v)
-		return
-	}
-	if v, ok := uuid.Domain(); !ok || v != domain {
-		if !ok {
-			t.Errorf("%s: %d: Domain failed\n", name, uuid)
-		} else {
-			t.Errorf("%s: %s: expected domain %d, got %d\n", name, uuid, domain, v)
-		}
-	}
-	if v, ok := uuid.Id(); !ok || v != id {
-		if !ok {
-			t.Errorf("%s: %d: Id failed\n", name, uuid)
-		} else {
-			t.Errorf("%s: %s: expected id %d, got %d\n", name, uuid, id, v)
-		}
-	}
-}
-
-func TestDCE(t *testing.T) {
-	testDCE(t, "NewDCESecurity", NewDCESecurity(42, 12345678), 42, 12345678)
-	testDCE(t, "NewDCEPerson", NewDCEPerson(), Person, uint32(os.Getuid()))
-	testDCE(t, "NewDCEGroup", NewDCEGroup(), Group, uint32(os.Getgid()))
-}
-
-type badRand struct{}
-
-func (r badRand) Read(buf []byte) (int, error) {
-	for i, _ := range buf {
-		buf[i] = byte(i)
-	}
-	return len(buf), nil
-}
-
-func TestBadRand(t *testing.T) {
-	SetRand(badRand{})
-	uuid1 := New()
-	uuid2 := New()
-	if uuid1 != uuid2 {
-		t.Errorf("execpted duplicates, got %q and %q\n", uuid1, uuid2)
-	}
-	SetRand(nil)
-	uuid1 = New()
-	uuid2 = New()
-	if uuid1 == uuid2 {
-		t.Errorf("unexecpted duplicates, got %q\n", uuid1)
-	}
-}

Godeps/_workspace/src/code.google.com/p/go-uuid/uuid/version1.go

@@ -1,41 +0,0 @@
-// Copyright 2011 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"
-)
-
-// NewUUID returns a Version 1 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 NewUUID returns nil.  If clock sequence has not been set by
-// SetClockSequence then it will be set automatically.  If GetTime fails to
-// return the current NewUUID returns nil.
-func NewUUID() UUID {
-	if nodeID == nil {
-		SetNodeInterface("")
-	}
-
-	now, seq, err := GetTime()
-	if err != nil {
-		return nil
-	}
-
-	uuid := make([]byte, 16)
-
-	time_low := uint32(now & 0xffffffff)
-	time_mid := uint16((now >> 32) & 0xffff)
-	time_hi := uint16((now >> 48) & 0x0fff)
-	time_hi |= 0x1000 // Version 1
-
-	binary.BigEndian.PutUint32(uuid[0:], time_low)
-	binary.BigEndian.PutUint16(uuid[4:], time_mid)
-	binary.BigEndian.PutUint16(uuid[6:], time_hi)
-	binary.BigEndian.PutUint16(uuid[8:], seq)
-	copy(uuid[10:], nodeID)
-
-	return uuid
-}

Godeps/_workspace/src/code.google.com/p/go-uuid/uuid/version4.go

@@ -1,25 +0,0 @@
-// Copyright 2011 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
-
-// Random returns a Random (Version 4) UUID or panics.
-//
-// The strength of the UUIDs is based on the strength of the crypto/rand
-// package.
-//
-// A note about uniqueness derived from from the UUID Wikipedia entry:
-//
-//  Randomly generated UUIDs have 122 random bits.  One's annual risk of being
-//  hit by a meteorite is estimated to be one chance in 17 billion, that
-//  means the probability is about 0.00000000006 (6 × 10−11),
-//  equivalent to the odds of creating a few tens of trillions of UUIDs in a
-//  year and having one duplicate.
-func NewRandom() UUID {
-	uuid := make([]byte, 16)
-	randomBits([]byte(uuid))
-	uuid[6] = (uuid[6] & 0x0f) | 0x40 // Version 4
-	uuid[8] = (uuid[8] & 0x3f) | 0x80 // Variant is 10
-	return uuid
-}

context/context.go

@@ -1,7 +1,7 @@
 package context
 
 import (
-	"code.google.com/p/go-uuid/uuid"
+	"github.com/docker/distribution/uuid"
 	"golang.org/x/net/context"
 )
 
@@ -27,7 +27,7 @@ func (ic *instanceContext) Value(key interface{}) interface{} {
 
 var background = &instanceContext{
 	Context: context.Background(),
-	id:      uuid.New(),
+	id:      uuid.Generate().String(),
 }
 
 // Background returns a non-nil, empty Context. The background context

context/http.go

@@ -8,8 +8,8 @@ import (
 	"sync"
 	"time"
 
-	"code.google.com/p/go-uuid/uuid"
 	log "github.com/Sirupsen/logrus"
+	"github.com/docker/distribution/uuid"
 	"github.com/gorilla/mux"
 )
 
@@ -79,7 +79,7 @@ func WithRequest(ctx Context, r *http.Request) Context {
 	return &httpRequestContext{
 		Context:   ctx,
 		startedAt: time.Now(),
-		id:        uuid.New(), // assign the request a unique.
+		id:        uuid.Generate().String(),
 		r:         r,
 	}
 }

context/logger.go

@@ -3,6 +3,8 @@ package context
 import (
 	"fmt"
 
+	"github.com/docker/distribution/uuid"
+
 	"github.com/Sirupsen/logrus"
 )
 
@@ -99,3 +101,8 @@ func getLogrusLogger(ctx Context, keys ...interface{}) *logrus.Entry {
 
 	return logger.WithFields(fields)
 }
+
+func init() {
+	// inject a logger into the uuid library.
+	uuid.Loggerf = GetLogger(Background()).Warnf
+}

context/trace.go

@@ -4,7 +4,7 @@ import (
 	"runtime"
 	"time"
 
-	"code.google.com/p/go-uuid/uuid"
+	"github.com/docker/distribution/uuid"
 )
 
 // WithTrace allocates a traced timing span in a new context. This allows a
@@ -45,7 +45,7 @@ func WithTrace(ctx Context) (Context, func(format string, a ...interface{})) {
 	f := runtime.FuncForPC(pc)
 	ctx = &traced{
 		Context: ctx,
-		id:      uuid.New(),
+		id:      uuid.Generate().String(),
 		start:   time.Now(),
 		parent:  GetStringValue(ctx, "trace.id"),
 		fnname:  f.Name(),

notifications/bridge.go

@@ -4,11 +4,11 @@ import (
 	"net/http"
 	"time"
 
-	"code.google.com/p/go-uuid/uuid"
 	"github.com/docker/distribution"
 	"github.com/docker/distribution/context"
 	"github.com/docker/distribution/digest"
 	"github.com/docker/distribution/manifest"
+	"github.com/docker/distribution/uuid"
 )
 
 type bridge struct {
@@ -149,7 +149,7 @@ func (b *bridge) createEvent(action string) *Event {
 // createEvent returns a new event, timestamped, with the specified action.
 func createEvent(action string) *Event {
 	return &Event{
-		ID:        uuid.New(),
+		ID:        uuid.Generate().String(),
 		Timestamp: time.Now(),
 		Action:    action,
 	}

registry/client/repository_test.go

@@ -12,7 +12,7 @@ import (
 	"testing"
 	"time"
 
-	"code.google.com/p/go-uuid/uuid"
+	"github.com/docker/distribution/uuid"
 
 	"github.com/docker/distribution"
 	"github.com/docker/distribution/context"
@@ -141,7 +141,7 @@ func TestBlobUploadChunked(t *testing.T) {
 		b1[513:1024],
 	}
 	repo := "test.example.com/uploadrepo"
-	uuids := []string{uuid.New()}
+	uuids := []string{uuid.Generate().String()}
 	m = append(m, testutil.RequestResponseMapping{
 		Request: testutil.Request{
 			Method: "POST",
@@ -159,7 +159,7 @@ func TestBlobUploadChunked(t *testing.T) {
 	})
 	offset := 0
 	for i, chunk := range chunks {
-		uuids = append(uuids, uuid.New())
+		uuids = append(uuids, uuid.Generate().String())
 		newOffset := offset + len(chunk)
 		m = append(m, testutil.RequestResponseMapping{
 			Request: testutil.Request{
@@ -256,7 +256,7 @@ func TestBlobUploadMonolithic(t *testing.T) {
 	dgst, b1 := newRandomBlob(1024)
 	var m testutil.RequestResponseMap
 	repo := "test.example.com/uploadrepo"
-	uploadID := uuid.New()
+	uploadID := uuid.Generate().String()
 	m = append(m, testutil.RequestResponseMapping{
 		Request: testutil.Request{
 			Method: "POST",

registry/storage/linkedblobstore.go

@@ -4,11 +4,11 @@ import (
 	"net/http"
 	"time"
 
-	"code.google.com/p/go-uuid/uuid"
 	"github.com/docker/distribution"
 	"github.com/docker/distribution/context"
 	"github.com/docker/distribution/digest"
 	"github.com/docker/distribution/registry/storage/driver"
+	"github.com/docker/distribution/uuid"
 )
 
 // linkedBlobStore provides a full BlobService that namespaces the blobs to a
@@ -85,7 +85,7 @@ func (lbs *linkedBlobStore) Put(ctx context.Context, mediaType string, p []byte)
 func (lbs *linkedBlobStore) Create(ctx context.Context) (distribution.BlobWriter, error) {
 	context.GetLogger(ctx).Debug("(*linkedBlobStore).Writer")
 
-	uuid := uuid.New()
+	uuid := uuid.Generate().String()
 	startedAt := time.Now().UTC()
 
 	path, err := lbs.blobStore.pm.path(uploadDataPathSpec{

registry/storage/purgeuploads.go

@@ -5,10 +5,10 @@ import (
 	"strings"
 	"time"
 
-	"code.google.com/p/go-uuid/uuid"
 	log "github.com/Sirupsen/logrus"
 	"github.com/docker/distribution/context"
 	storageDriver "github.com/docker/distribution/registry/storage/driver"
+	"github.com/docker/distribution/uuid"
 )
 
 // uploadData stored the location of temporary files created during a layer upload
@@ -116,8 +116,8 @@ func getOutstandingUploads(ctx context.Context, driver storageDriver.StorageDriv
 func uUIDFromPath(path string) (string, bool) {
 	components := strings.Split(path, "/")
 	for i := len(components) - 1; i >= 0; i-- {
-		if uuid := uuid.Parse(components[i]); uuid != nil {
+		if u, err := uuid.Parse(components[i]); err == nil {
-			return uuid.String(), i == len(components)-1
+			return u.String(), i == len(components)-1
 		}
 	}
 	return "", false

registry/storage/purgeuploads_test.go

@@ -6,10 +6,10 @@ import (
 	"testing"
 	"time"
 
-	"code.google.com/p/go-uuid/uuid"
 	"github.com/docker/distribution/context"
 	"github.com/docker/distribution/registry/storage/driver"
 	"github.com/docker/distribution/registry/storage/driver/inmemory"
+	"github.com/docker/distribution/uuid"
 )
 
 var pm = defaultPathMapper
@@ -18,7 +18,7 @@ func testUploadFS(t *testing.T, numUploads int, repoName string, startedAt time.
 	d := inmemory.New()
 	ctx := context.Background()
 	for i := 0; i < numUploads; i++ {
-		addUploads(ctx, t, d, uuid.New(), repoName, startedAt)
+		addUploads(ctx, t, d, uuid.Generate().String(), repoName, startedAt)
 	}
 	return d, ctx
 }
@@ -73,7 +73,7 @@ func TestPurgeAll(t *testing.T) {
 	fs, ctx := testUploadFS(t, uploadCount, "test-repo", oneHourAgo)
 
 	// Ensure > 1 repos are purged
-	addUploads(ctx, t, fs, uuid.New(), "test-repo2", oneHourAgo)
+	addUploads(ctx, t, fs, uuid.Generate().String(), "test-repo2", oneHourAgo)
 	uploadCount++
 
 	deleted, errs := PurgeUploads(ctx, fs, time.Now(), true)
@@ -95,7 +95,7 @@ func TestPurgeSome(t *testing.T) {
 	newUploadCount := 4
 
 	for i := 0; i < newUploadCount; i++ {
-		addUploads(ctx, t, fs, uuid.New(), "test-repo", time.Now().Add(1*time.Hour))
+		addUploads(ctx, t, fs, uuid.Generate().String(), "test-repo", time.Now().Add(1*time.Hour))
 	}
 
 	deleted, errs := PurgeUploads(ctx, fs, time.Now(), true)
@@ -115,7 +115,7 @@ func TestPurgeOnlyUploads(t *testing.T) {
 
 	// Create a directory tree outside _uploads and ensure
 	// these files aren't deleted.
-	dataPath, err := pm.path(uploadDataPathSpec{name: "test-repo", id: uuid.New()})
+	dataPath, err := pm.path(uploadDataPathSpec{name: "test-repo", id: uuid.Generate().String()})
 	if err != nil {
 		t.Fatalf(err.Error())
 	}

uuid/uuid.go

@@ -0,0 +1,112 @@
+// Package uuid provides simple UUID generation. Only version 4 style UUIDs
+// can be generated.
+//
+// Please see http://tools.ietf.org/html/rfc4122 for details on UUIDs.
+package uuid
+
+import (
+	"crypto/rand"
+	"fmt"
+	"io"
+	"log"
+	"syscall"
+	"time"
+)
+
+const (
+	// Bits is the number of bits in a UUID
+	Bits = 128
+
+	// Size is the number of bytes in a UUID
+	Size = Bits / 8
+
+	format = "%08x-%04x-%04x-%04x-%012x"
+)
+
+var (
+	// ErrUUIDInvalid indicates a parsed string is not a valid uuid.
+	ErrUUIDInvalid = fmt.Errorf("invalid uuid")
+
+	// Loggerf can be used to override the default logging destination. Such
+	// log messages in this library should be logged at warning or higher.
+	Loggerf = log.Printf
+)
+
+// UUID represents a UUID value. UUIDs can be compared and set to other values
+// and accessed by byte.
+type UUID [Size]byte
+
+// Generate creates a new, version 4 uuid.
+func Generate() (u UUID) {
+	const (
+		// ensures we backoff for less than 450ms total. Use the following to
+		// select new value, in units of 10ms:
+		// 	n*(n+1)/2 = d -> n^2 + n - 2d -> n = (sqrt(8d + 1) - 1)/2
+		maxretries = 9
+		backoff    = time.Millisecond * 10
+	)
+
+	var (
+		totalBackoff time.Duration
+		retries      int
+	)
+
+	for {
+		// This should never block but the read may fail. Because of this,
+		// we just try to read the random number generator until we get
+		// something. This is a very rare condition but may happen.
+		b := time.Duration(retries) * backoff
+		time.Sleep(b)
+		totalBackoff += b
+
+		_, err := io.ReadFull(rand.Reader, u[:])
+		if err != nil {
+			if err == syscall.EPERM {
+				// EPERM represents an entropy pool exhaustion, a condition under
+				// which we backoff and retry.
+				if retries < maxretries {
+					retries++
+					Loggerf("error generating version 4 uuid, retrying: %v", err)
+					continue
+				}
+			}
+
+			// Any other errors represent a system problem. What did someone
+			// do to /dev/urandom?
+			panic(fmt.Errorf("error reading random number generator, retried for %v: %v", totalBackoff, err))
+		}
+
+		break
+	}
+
+	u[6] = (u[6] & 0x0f) | 0x40 // set version byte
+	u[8] = (u[8] & 0x3f) | 0x80 // set high order byte 0b10{8,9,a,b}
+
+	return u
+}
+
+// Parse attempts to extract a uuid from the string or returns an error.
+func Parse(s string) (u UUID, err error) {
+	if len(s) != 36 {
+		return UUID{}, ErrUUIDInvalid
+	}
+
+	// create stack addresses for each section of the uuid.
+	p := make([][]byte, 5)
+
+	if _, err := fmt.Sscanf(s, format, &p[0], &p[1], &p[2], &p[3], &p[4]); err != nil {
+		return u, err
+	}
+
+	copy(u[0:4], p[0])
+	copy(u[4:6], p[1])
+	copy(u[6:8], p[2])
+	copy(u[8:10], p[3])
+	copy(u[10:16], p[4])
+
+	return
+}
+
+func (u UUID) String() string {
+	return fmt.Sprintf(format, u[:4], u[4:6], u[6:8], u[8:10], u[10:])
+}

uuid/uuid_test.go

@@ -0,0 +1,48 @@
+package uuid
+
+import (
+	"testing"
+)
+
+const iterations = 1000
+
+func TestUUID4Generation(t *testing.T) {
+	for i := 0; i < iterations; i++ {
+		u := Generate()
+
+		if u[6]&0xf0 != 0x40 {
+			t.Fatalf("version byte not correctly set: %v, %08b %08b", u, u[6], u[6]&0xf0)
+		}
+
+		if u[8]&0xc0 != 0x80 {
+			t.Fatalf("top order 8th byte not correctly set: %v, %b", u, u[8])
+		}
+	}
+}
+
+func TestParseAndEquality(t *testing.T) {
+	for i := 0; i < iterations; i++ {
+		u := Generate()
+
+		parsed, err := Parse(u.String())
+		if err != nil {
+			t.Fatalf("error parsing uuid %v: %v", u, err)
+		}
+
+		if parsed != u {
+			t.Fatalf("parsing round trip failed: %v != %v", parsed, u)
+		}
+	}
+
+	for _, c := range []string{
+		"bad",
+		"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",    // correct length, incorrect format
+		"  20cc7775-2671-43c7-8742-51d1cfa23258",  // leading space
+		"20cc7775-2671-43c7-8742-51d1cfa23258   ", // trailing space
+		"00000000-0000-0000-0000-x00000000000   ", // out of range character
+	} {
+		if _, err := Parse(c); err == nil {
+			t.Fatalf("parsing %q should have failed", c)
+		}
+	}
+}