uses semver/v3

Author: hedzr

go.mod

@@ -15,6 +15,7 @@ go 1.13
 // replace github.com/hedzr/go-ringbuf => ../go-ringbuf
 
 require (
-	github.com/Masterminds/semver v1.5.0
+	github.com/Masterminds/semver/v3 v3.1.1
 	github.com/hedzr/log v0.3.21
+	gopkg.in/hedzr/errors.v2 v2.1.5
 )

go.sum

@@ -2,7 +2,7 @@ package version
 
 import (
 	"fmt"
-	"github.com/Masterminds/semver"
+	"github.com/Masterminds/semver/v3"
 	"github.com/hedzr/lb/lbapi"
 	"github.com/hedzr/log"
 )
@@ -19,7 +19,7 @@ type VersioningBackendFactor interface {
 // address is like 'host:port' typically, but you can use any forms you like.
 func NewBackendFactor(version string, addr string) VersioningBackendFactor {
 	f := &backendFactor{
-		version: check(version),
+		version: verCleanup(version),
 		addr:    addr,
 	}
 
@@ -38,7 +38,7 @@ type backendFactor struct {
 	versionObj *semver.Version
 }
 
-func check(v string) string {
+func verCleanup(v string) string {
 	if v[0] == 'v' {
 		return v[1:]
 	}

version/backend_factor.go

@@ -1,7 +1,7 @@
 package version
 
 import (
-	"github.com/Masterminds/semver"
+	"github.com/Masterminds/semver/v3"
 	"github.com/hedzr/lb/lbapi"
 	"github.com/hedzr/lb/wrr"
 	"github.com/hedzr/log"

version/builder.go

@@ -2,7 +2,7 @@ package version
 
 import (
 	"fmt"
-	"github.com/Masterminds/semver"
+	"github.com/Masterminds/semver/v3"
 	"github.com/hedzr/lb/lbapi"
 )
 
@@ -34,15 +34,18 @@ import (
 //
 // See also NewBackendsFactor and New
 func NewConstrainablePeer(constraints string, weight int) (peer lbapi.Constrainable) {
-	p := &constrainablePeer{
-		constraints:    constraints,
-		weight:         weight,
-		constraintsObj: nil,
-	}
 	vc, err := semver.NewConstraint(constraints)
 	if err == nil {
-		p.constraintsObj = vc
-		peer = p
+		peer = NewConstrainablePeerFromObj(vc, weight)
+	}
+	return
+}
+
+func NewConstrainablePeerFromObj(constraints *semver.Constraints, weight int) (peer lbapi.Constrainable) {
+	peer = &constrainablePeer{
+		weight:         weight,
+		constraints:    constraints.String(),
+		constraintsObj: constraints,
 	}
 	return
 }

version/constraints_peer.go

@@ -1,7 +1,7 @@
 package version
 
 import (
-	"github.com/Masterminds/semver"
+	"github.com/Masterminds/semver/v3"
 	"testing"
 )