@@ -43,6 +43,7 @@ github.com/BurntSushi/toml f706d00e3de6abe700c994cdd545a1a4915af060

 github.com/samuel/go-zookeeper d0e0d8e11f318e000a8cc434616d69e329edc374

 github.com/deckarep/golang-set ef32fa3046d9f249d399f98ebaf9be944430fd1d

 github.com/coreos/etcd v3.2.1

+github.com/coreos/go-semver v0.2.0

 github.com/ugorji/go f1f1a805ed361a0e078bb537e4ea78cd37dcf065

 github.com/hashicorp/consul v0.5.2

 github.com/boltdb/bolt fff57c100f4dea1905678da7e90d92429dff2904

new file mode 100644

@@ -0,0 +1,202 @@

+

+                                 Apache License

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new file mode 100644

@@ -0,0 +1,28 @@

+# go-semver - Semantic Versioning Library

+

+[![Build Status](https://travis-ci.org/coreos/go-semver.svg?branch=master)](https://travis-ci.org/coreos/go-semver)

+[![GoDoc](https://godoc.org/github.com/coreos/go-semver/semver?status.svg)](https://godoc.org/github.com/coreos/go-semver/semver)

+

+go-semver is a [semantic versioning][semver] library for Go. It lets you parse

+and compare two semantic version strings.

+

+[semver]: http://semver.org/

+

+## Usage

+

+```go

+vA := semver.New("1.2.3")

+vB := semver.New("3.2.1")

+

+fmt.Printf("%s < %s == %t\n", vA, vB, vA.LessThan(*vB))

+```

+

+## Example Application

+

+```

+$ go run example.go 1.2.3 3.2.1

+1.2.3 < 3.2.1 == true

+

+$ go run example.go 5.2.3 3.2.1

+5.2.3 < 3.2.1 == false

+```

new file mode 100644

@@ -0,0 +1,268 @@

+// Copyright 2013-2015 CoreOS, Inc.

+//

+// Licensed under the Apache License, Version 2.0 (the "License");

+// you may not use this file except in compliance with the License.

+// You may obtain a copy of the License at

+//

+//     http://www.apache.org/licenses/LICENSE-2.0

+//

+// Unless required by applicable law or agreed to in writing, software

+// distributed under the License is distributed on an "AS IS" BASIS,

+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+// See the License for the specific language governing permissions and

+// limitations under the License.

+

+// Semantic Versions http://semver.org

+package semver

+

+import (

+	"bytes"

+	"errors"

+	"fmt"

+	"strconv"

+	"strings"

+)

+

+type Version struct {

+	Major      int64

+	Minor      int64

+	Patch      int64

+	PreRelease PreRelease

+	Metadata   string

+}

+

+type PreRelease string

+

+func splitOff(input *string, delim string) (val string) {

+	parts := strings.SplitN(*input, delim, 2)

+

+	if len(parts) == 2 {

+		*input = parts[0]

+		val = parts[1]

+	}

+

+	return val

+}

+

+func New(version string) *Version {

+	return Must(NewVersion(version))

+}

+

+func NewVersion(version string) (*Version, error) {

+	v := Version{}

+

+	if err := v.Set(version); err != nil {

+		return nil, err

+	}

+

+	return &v, nil

+}

+

+// Must is a helper for wrapping NewVersion and will panic if err is not nil.

+func Must(v *Version, err error) *Version {

+	if err != nil {

+		panic(err)

+	}

+	return v

+}

+

+// Set parses and updates v from the given version string. Implements flag.Value

+func (v *Version) Set(version string) error {

+	metadata := splitOff(&version, "+")

+	preRelease := PreRelease(splitOff(&version, "-"))

+	dotParts := strings.SplitN(version, ".", 3)

+

+	if len(dotParts) != 3 {

+		return fmt.Errorf("%s is not in dotted-tri format", version)

+	}

+

+	parsed := make([]int64, 3, 3)

+

+	for i, v := range dotParts[:3] {

+		val, err := strconv.ParseInt(v, 10, 64)

+		parsed[i] = val

+		if err != nil {

+			return err

+		}

+	}

+

+	v.Metadata = metadata

+	v.PreRelease = preRelease

+	v.Major = parsed[0]

+	v.Minor = parsed[1]

+	v.Patch = parsed[2]

+	return nil

+}

+

+func (v Version) String() string {

+	var buffer bytes.Buffer

+

+	fmt.Fprintf(&buffer, "%d.%d.%d", v.Major, v.Minor, v.Patch)

+

+	if v.PreRelease != "" {

+		fmt.Fprintf(&buffer, "-%s", v.PreRelease)

+	}

+

+	if v.Metadata != "" {

+		fmt.Fprintf(&buffer, "+%s", v.Metadata)

+	}

+

+	return buffer.String()

+}

+

+func (v *Version) UnmarshalYAML(unmarshal func(interface{}) error) error {

+	var data string

+	if err := unmarshal(&data); err != nil {

+		return err

+	}

+	return v.Set(data)

+}

+

+func (v Version) MarshalJSON() ([]byte, error) {

+	return []byte(`"` + v.String() + `"`), nil

+}

+

+func (v *Version) UnmarshalJSON(data []byte) error {

+	l := len(data)

+	if l == 0 || string(data) == `""` {

+		return nil

+	}

+	if l < 2 || data[0] != '"' || data[l-1] != '"' {

+		return errors.New("invalid semver string")

+	}

+	return v.Set(string(data[1 : l-1]))

+}

+

+// Compare tests if v is less than, equal to, or greater than versionB,

+// returning -1, 0, or +1 respectively.

+func (v Version) Compare(versionB Version) int {

+	if cmp := recursiveCompare(v.Slice(), versionB.Slice()); cmp != 0 {

+		return cmp

+	}

+	return preReleaseCompare(v, versionB)

+}

+

+// Equal tests if v is equal to versionB.

+func (v Version) Equal(versionB Version) bool {

+	return v.Compare(versionB) == 0

+}

+

+// LessThan tests if v is less than versionB.

+func (v Version) LessThan(versionB Version) bool {

+	return v.Compare(versionB) < 0

+}

+

+// Slice converts the comparable parts of the semver into a slice of integers.

+func (v Version) Slice() []int64 {

+	return []int64{v.Major, v.Minor, v.Patch}

+}

+

+func (p PreRelease) Slice() []string {

+	preRelease := string(p)

+	return strings.Split(preRelease, ".")

+}

+

+func preReleaseCompare(versionA Version, versionB Version) int {

+	a := versionA.PreRelease

+	b := versionB.PreRelease

+

+	/* Handle the case where if two versions are otherwise equal it is the

+	 * one without a PreRelease that is greater */

+	if len(a) == 0 && (len(b) > 0) {

+		return 1

+	} else if len(b) == 0 && (len(a) > 0) {

+		return -1

+	}

+

+	// If there is a prerelease, check and compare each part.

+	return recursivePreReleaseCompare(a.Slice(), b.Slice())

+}

+

+func recursiveCompare(versionA []int64, versionB []int64) int {

+	if len(versionA) == 0 {

+		return 0

+	}

+

+	a := versionA[0]

+	b := versionB[0]

+

+	if a > b {

+		return 1

+	} else if a < b {

+		return -1

+	}

+

+	return recursiveCompare(versionA[1:], versionB[1:])

+}

+

+func recursivePreReleaseCompare(versionA []string, versionB []string) int {

+	// A larger set of pre-release fields has a higher precedence than a smaller set,

+	// if all of the preceding identifiers are equal.

+	if len(versionA) == 0 {

+		if len(versionB) > 0 {

+			return -1

+		}

+		return 0

+	} else if len(versionB) == 0 {

+		// We're longer than versionB so return 1.

+		return 1

+	}

+

+	a := versionA[0]

+	b := versionB[0]

+

+	aInt := false

+	bInt := false

+

+	aI, err := strconv.Atoi(versionA[0])

+	if err == nil {

+		aInt = true

+	}

+

+	bI, err := strconv.Atoi(versionB[0])

+	if err == nil {

+		bInt = true

+	}

+

+	// Handle Integer Comparison

+	if aInt && bInt {

+		if aI > bI {

+			return 1

+		} else if aI < bI {

+			return -1

+		}

+	}

+

+	// Handle String Comparison

+	if a > b {

+		return 1

+	} else if a < b {

+		return -1

+	}

+

+	return recursivePreReleaseCompare(versionA[1:], versionB[1:])

+}

+

+// BumpMajor increments the Major field by 1 and resets all other fields to their default values

+func (v *Version) BumpMajor() {

+	v.Major += 1

+	v.Minor = 0

+	v.Patch = 0

+	v.PreRelease = PreRelease("")

+	v.Metadata = ""

+}

+

+// BumpMinor increments the Minor field by 1 and resets all other fields to their default values

+func (v *Version) BumpMinor() {

+	v.Minor += 1

+	v.Patch = 0

+	v.PreRelease = PreRelease("")

+	v.Metadata = ""

+}

+

+// BumpPatch increments the Patch field by 1 and resets all other fields to their default values

+func (v *Version) BumpPatch() {

+	v.Patch += 1

+	v.PreRelease = PreRelease("")

+	v.Metadata = ""

+}

new file mode 100644

@@ -0,0 +1,38 @@

+// Copyright 2013-2015 CoreOS, Inc.

+//

+// Licensed under the Apache License, Version 2.0 (the "License");

+// you may not use this file except in compliance with the License.

+// You may obtain a copy of the License at

+//

+//     http://www.apache.org/licenses/LICENSE-2.0

+//

+// Unless required by applicable law or agreed to in writing, software

+// distributed under the License is distributed on an "AS IS" BASIS,

+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+// See the License for the specific language governing permissions and

+// limitations under the License.

+

+package semver

+

+import (

+	"sort"

+)

+

+type Versions []*Version

+

+func (s Versions) Len() int {

+	return len(s)

+}

+

+func (s Versions) Swap(i, j int) {

+	s[i], s[j] = s[j], s[i]

+}

+

+func (s Versions) Less(i, j int) bool {

+	return s[i].LessThan(*s[j])

+}

+

+// Sort sorts the given slice of Version

+func Sort(versions []*Version) {

+	sort.Sort(Versions(versions))

+}