get k8s version through k8sclient

Gopkg.lock

@@ -742,11 +742,12 @@
   version = "v7.0.0"
 
 [[projects]]
-  digest = "1:1de91645e73441071e6df50478003c60881687cf9849ba0585a61035a6d2a2af"
+  digest = "1:2bdbea32607f4effd9e91dadd90baab1ecf224839b613bcaa8f50db5a5f133f5"
   name = "k8s.io/kubernetes"
   packages = [
     "pkg/apis/core",
     "pkg/util/slice",
+    "pkg/util/version",
   ]
   pruneopts = "UT"
   revision = "5ca598b4ba5abb89bb773071ce452e33fb66339d"
@@ -800,6 +801,7 @@
     "k8s.io/client-go/tools/remotecommand",
     "k8s.io/kubernetes/pkg/apis/core",
     "k8s.io/kubernetes/pkg/util/slice",
+    "k8s.io/kubernetes/pkg/util/version",
   ]
   solver-name = "gps-cdcl"
   solver-version = 1

pkg/models/controllers/namespaces.go

@@ -36,8 +36,7 @@ import (
 
 	"k8s.io/kubernetes/pkg/apis/core"
 
-	"strconv"
+	utilversion "k8s.io/kubernetes/pkg/util/version"
-	"strings"
 
 	"kubesphere.io/kubesphere/pkg/client"
 	"kubesphere.io/kubesphere/pkg/constants"
@@ -232,21 +231,14 @@ func (ctl *NamespaceCtl) createRoleAndRuntime(item v1.Namespace) {
 }
 
 func (ctl *NamespaceCtl) createCephSecretAfterNewNs(item v1.Namespace) {
-	// Kubernetes version must <= 1.10
+	// Kubernetes version must < 1.11.0
-	openInfo, err := ctl.K8sClient.OpenAPISchema()
+	verInfo, err := ctl.K8sClient.ServerVersion()
 	if err != nil {
-		glog.Error("consult openAPI error: ", err)
+		glog.Error("consult k8s server error: ", err)
 		return
 	}
-	if openInfo == nil {
+	if !utilversion.MustParseSemantic(verInfo.String()).LessThan(utilversion.MustParseSemantic("v1.11.0")) {
-		glog.Error("cannot find openAPI info")
+		glog.Infof("disable Ceph secret controller due to k8s version %s >= v1.11.0", verInfo.String())
-		return
-	}
-	ver := strings.Split(openInfo.GetInfo().GetVersion(), ".")
-	midVer, _ := strconv.Atoi(ver[1])
-	if !(ver[0] == "v1" && midVer < 11) {
-		glog.Infof("disable Ceph secret controller due to Kubernetes version %s mismatch",
-			openInfo.GetInfo().GetVersion())
 		return
 	}
 

pkg/models/controllers/storageclasses.go

@@ -20,8 +20,7 @@ import (
 	"fmt"
 	"time"
 
-	"strconv"
+	utilversion "k8s.io/kubernetes/pkg/util/version"
-	"strings"
 
 	"github.com/golang/glog"
 	coreV1 "k8s.io/api/core/v1"
@@ -95,21 +94,14 @@ func (ctl *StorageClassCtl) total() int {
 }
 
 func (ctl *StorageClassCtl) createCephSecretAfterNewSc(item v1.StorageClass) {
-	// Kubernetes version must <= 1.10
+	// Kubernetes version must < 1.11.0
-	openInfo, err := ctl.K8sClient.OpenAPISchema()
+	verInfo, err := ctl.K8sClient.ServerVersion()
 	if err != nil {
-		glog.Error("consult openAPI error: ", err)
+		glog.Error("consult k8s server error: ", err)
 		return
 	}
-	if openInfo == nil {
+	if !utilversion.MustParseSemantic(verInfo.String()).LessThan(utilversion.MustParseSemantic("v1.11.0")) {
-		glog.Error("cannot find openAPI info")
+		glog.Infof("disable Ceph secret controller due to k8s version %s >= v1.11.0", verInfo.String())
-		return
-	}
-	ver := strings.Split(openInfo.GetInfo().GetVersion(), ".")
-	midVer, _ := strconv.Atoi(ver[1])
-	if !(ver[0] == "v1" && midVer < 11) {
-		glog.Infof("disable Ceph secret controller due to Kubernetes version %s mismatch",
-			openInfo.GetInfo().GetVersion())
 		return
 	}
 

vendor/k8s.io/kubernetes/pkg/util/version/BUILD

@@ -0,0 +1,35 @@
+package(default_visibility = ["//visibility:public"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_library",
+    "go_test",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "doc.go",
+        "version.go",
+    ],
+    importpath = "k8s.io/kubernetes/pkg/util/version",
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["version_test.go"],
+    embed = [":go_default_library"],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+)

vendor/k8s.io/kubernetes/pkg/util/version/doc.go

@@ -0,0 +1,18 @@
+/*
+Copyright 2016 The Kubernetes Authors.
+
+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 version provides utilities for version number comparisons
+package version // import "k8s.io/kubernetes/pkg/util/version"

vendor/k8s.io/kubernetes/pkg/util/version/version.go

@@ -0,0 +1,285 @@
+/*
+Copyright 2016 The Kubernetes Authors.
+
+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 version
+
+import (
+	"bytes"
+	"fmt"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+// Version is an opqaue representation of a version number
+type Version struct {
+	components    []uint
+	semver        bool
+	preRelease    string
+	buildMetadata string
+}
+
+var (
+	// versionMatchRE splits a version string into numeric and "extra" parts
+	versionMatchRE = regexp.MustCompile(`^\s*v?([0-9]+(?:\.[0-9]+)*)(.*)*$`)
+	// extraMatchRE splits the "extra" part of versionMatchRE into semver pre-release and build metadata; it does not validate the "no leading zeroes" constraint for pre-release
+	extraMatchRE = regexp.MustCompile(`^(?:-([0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*))?(?:\+([0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*))?\s*$`)
+)
+
+func parse(str string, semver bool) (*Version, error) {
+	parts := versionMatchRE.FindStringSubmatch(str)
+	if parts == nil {
+		return nil, fmt.Errorf("could not parse %q as version", str)
+	}
+	numbers, extra := parts[1], parts[2]
+
+	components := strings.Split(numbers, ".")
+	if (semver && len(components) != 3) || (!semver && len(components) < 2) {
+		return nil, fmt.Errorf("illegal version string %q", str)
+	}
+
+	v := &Version{
+		components: make([]uint, len(components)),
+		semver:     semver,
+	}
+	for i, comp := range components {
+		if (i == 0 || semver) && strings.HasPrefix(comp, "0") && comp != "0" {
+			return nil, fmt.Errorf("illegal zero-prefixed version component %q in %q", comp, str)
+		}
+		num, err := strconv.ParseUint(comp, 10, 0)
+		if err != nil {
+			return nil, fmt.Errorf("illegal non-numeric version component %q in %q: %v", comp, str, err)
+		}
+		v.components[i] = uint(num)
+	}
+
+	if semver && extra != "" {
+		extraParts := extraMatchRE.FindStringSubmatch(extra)
+		if extraParts == nil {
+			return nil, fmt.Errorf("could not parse pre-release/metadata (%s) in version %q", extra, str)
+		}
+		v.preRelease, v.buildMetadata = extraParts[1], extraParts[2]
+
+		for _, comp := range strings.Split(v.preRelease, ".") {
+			if _, err := strconv.ParseUint(comp, 10, 0); err == nil {
+				if strings.HasPrefix(comp, "0") && comp != "0" {
+					return nil, fmt.Errorf("illegal zero-prefixed version component %q in %q", comp, str)
+				}
+			}
+		}
+	}
+
+	return v, nil
+}
+
+// ParseGeneric parses a "generic" version string. The version string must consist of two
+// or more dot-separated numeric fields (the first of which can't have leading zeroes),
+// followed by arbitrary uninterpreted data (which need not be separated from the final
+// numeric field by punctuation). For convenience, leading and trailing whitespace is
+// ignored, and the version can be preceded by the letter "v". See also ParseSemantic.
+func ParseGeneric(str string) (*Version, error) {
+	return parse(str, false)
+}
+
+// MustParseGeneric is like ParseGeneric except that it panics on error
+func MustParseGeneric(str string) *Version {
+	v, err := ParseGeneric(str)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// ParseSemantic parses a version string that exactly obeys the syntax and semantics of
+// the "Semantic Versioning" specification (http://semver.org/) (although it ignores
+// leading and trailing whitespace, and allows the version to be preceded by "v"). For
+// version strings that are not guaranteed to obey the Semantic Versioning syntax, use
+// ParseGeneric.
+func ParseSemantic(str string) (*Version, error) {
+	return parse(str, true)
+}
+
+// MustParseSemantic is like ParseSemantic except that it panics on error
+func MustParseSemantic(str string) *Version {
+	v, err := ParseSemantic(str)
+	if err != nil {
+		panic(err)
+	}
+	return v
+}
+
+// Major returns the major release number
+func (v *Version) Major() uint {
+	return v.components[0]
+}
+
+// Minor returns the minor release number
+func (v *Version) Minor() uint {
+	return v.components[1]
+}
+
+// Patch returns the patch release number if v is a Semantic Version, or 0
+func (v *Version) Patch() uint {
+	if len(v.components) < 3 {
+		return 0
+	}
+	return v.components[2]
+}
+
+// BuildMetadata returns the build metadata, if v is a Semantic Version, or ""
+func (v *Version) BuildMetadata() string {
+	return v.buildMetadata
+}
+
+// PreRelease returns the prerelease metadata, if v is a Semantic Version, or ""
+func (v *Version) PreRelease() string {
+	return v.preRelease
+}
+
+// Components returns the version number components
+func (v *Version) Components() []uint {
+	return v.components
+}
+
+// String converts a Version back to a string; note that for versions parsed with
+// ParseGeneric, this will not include the trailing uninterpreted portion of the version
+// number.
+func (v *Version) String() string {
+	var buffer bytes.Buffer
+
+	for i, comp := range v.components {
+		if i > 0 {
+			buffer.WriteString(".")
+		}
+		buffer.WriteString(fmt.Sprintf("%d", comp))
+	}
+	if v.preRelease != "" {
+		buffer.WriteString("-")
+		buffer.WriteString(v.preRelease)
+	}
+	if v.buildMetadata != "" {
+		buffer.WriteString("+")
+		buffer.WriteString(v.buildMetadata)
+	}
+
+	return buffer.String()
+}
+
+// compareInternal returns -1 if v is less than other, 1 if it is greater than other, or 0
+// if they are equal
+func (v *Version) compareInternal(other *Version) int {
+
+	vLen := len(v.components)
+	oLen := len(other.components)
+	for i := 0; i < vLen && i < oLen; i++ {
+		switch {
+		case other.components[i] < v.components[i]:
+			return 1
+		case other.components[i] > v.components[i]:
+			return -1
+		}
+	}
+
+	// If components are common but one has more items and they are not zeros, it is bigger
+	switch {
+	case oLen < vLen && !onlyZeros(v.components[oLen:]):
+		return 1
+	case oLen > vLen && !onlyZeros(other.components[vLen:]):
+		return -1
+	}
+
+	if !v.semver || !other.semver {
+		return 0
+	}
+
+	switch {
+	case v.preRelease == "" && other.preRelease != "":
+		return 1
+	case v.preRelease != "" && other.preRelease == "":
+		return -1
+	case v.preRelease == other.preRelease: // includes case where both are ""
+		return 0
+	}
+
+	vPR := strings.Split(v.preRelease, ".")
+	oPR := strings.Split(other.preRelease, ".")
+	for i := 0; i < len(vPR) && i < len(oPR); i++ {
+		vNum, err := strconv.ParseUint(vPR[i], 10, 0)
+		if err == nil {
+			oNum, err := strconv.ParseUint(oPR[i], 10, 0)
+			if err == nil {
+				switch {
+				case oNum < vNum:
+					return 1
+				case oNum > vNum:
+					return -1
+				default:
+					continue
+				}
+			}
+		}
+		if oPR[i] < vPR[i] {
+			return 1
+		} else if oPR[i] > vPR[i] {
+			return -1
+		}
+	}
+
+	switch {
+	case len(oPR) < len(vPR):
+		return 1
+	case len(oPR) > len(vPR):
+		return -1
+	}
+
+	return 0
+}
+
+// returns false if array contain any non-zero element
+func onlyZeros(array []uint) bool {
+	for _, num := range array {
+		if num != 0 {
+			return false
+		}
+	}
+	return true
+}
+
+// AtLeast tests if a version is at least equal to a given minimum version. If both
+// Versions are Semantic Versions, this will use the Semantic Version comparison
+// algorithm. Otherwise, it will compare only the numeric components, with non-present
+// components being considered "0" (ie, "1.4" is equal to "1.4.0").
+func (v *Version) AtLeast(min *Version) bool {
+	return v.compareInternal(min) != -1
+}
+
+// LessThan tests if a version is less than a given version. (It is exactly the opposite
+// of AtLeast, for situations where asking "is v too old?" makes more sense than asking
+// "is v new enough?".)
+func (v *Version) LessThan(other *Version) bool {
+	return v.compareInternal(other) == -1
+}
+
+// Compare compares v against a version string (which will be parsed as either Semantic
+// or non-Semantic depending on v). On success it returns -1 if v is less than other, 1 if
+// it is greater than other, or 0 if they are equal.
+func (v *Version) Compare(other string) (int, error) {
+	ov, err := parse(other, v.semver)
+	if err != nil {
+		return 0, err
+	}
+	return v.compareInternal(ov), nil
+}