Add hyperkit version check whether user's hyperkit is newer

pkg/minikube/registry/drvs/hyperkit/hyperkit.go

@@ -22,6 +22,9 @@ import (
 	"fmt"
 	"os/exec"
 	"strings"
+	"time"
+
+	"github.com/pkg/errors"
 
 	"github.com/docker/machine/libmachine/drivers"
 	"github.com/pborman/uuid"
@@ -37,6 +40,11 @@ const (
 	docURL = "https://minikube.sigs.k8s.io/docs/reference/drivers/hyperkit/"
 )
 
+var (
+	// minimumVersion is used by hyperkit versionCheck(whether user's hyperkit is older than this)
+	minimumVersion = "0.20190201"
+)
+
 func init() {
 	if err := registry.Register(registry.DriverDef{
 		Name:     driver.HyperKit,
@@ -85,5 +93,63 @@ func status() registry.State {
 		return registry.State{Installed: true, Error: fmt.Errorf("%s failed:\n%s", strings.Join(cmd.Args, " "), out), Fix: "Run 'brew install hyperkit'", Doc: docURL}
 	}
 
+	// Split version from v0.YYYYMMDD-HH-xxxxxxx or 0.YYYYMMDD to YYYYMMDD
+	currentVersion := convertVersionToDate(string(out))
+	specificVersion := splitHyperKitVersion(minimumVersion)
+	// If current hyperkit is not newer than minimumVersion, suggest upgrade information
+	isNew, err := isNewerVersion(currentVersion, specificVersion)
+	if err != nil {
+		return registry.State{Installed: true, Healthy: true, Error: fmt.Errorf("hyperkit version check failed:\n%v", err), Doc: docURL}
+	}
+	if !isNew {
+		return registry.State{Installed: true, Healthy: true, Error: fmt.Errorf("the installed hyperkit version (0.%s) is older than the minimum recommended version (%s)", currentVersion, minimumVersion), Fix: "Run 'brew upgrade hyperkit'", Doc: docURL}
+	}
+
 	return registry.State{Installed: true, Healthy: true}
 }
+
+// isNewerVersion checks whether current hyperkit is newer than specific version
+func isNewerVersion(currentVersion string, specificVersion string) (bool, error) {
+	// Convert hyperkit version to time.Date to compare whether hyperkit version is not old.
+	layout := "20060102"
+	currentVersionDate, err := time.Parse(layout, currentVersion)
+	if err != nil {
+		return false, errors.Wrap(err, "parse date")
+	}
+	specificVersionDate, err := time.Parse(layout, specificVersion)
+	if err != nil {
+		return false, errors.Wrap(err, "parse date")
+	}
+	// If currentVersionDate is equal to specificVersionDate, no need to upgrade hyperkit
+	if currentVersionDate.Equal(specificVersionDate) {
+		return true, nil
+	}
+	// If currentVersionDate is after specificVersionDate, return true
+	return currentVersionDate.After(specificVersionDate), nil
+}
+
+// convertVersionToDate returns current hyperkit version
+// hyperkit returns version info with two patterns(v0.YYYYMMDD-HH-xxxxxxx or 0.YYYYMMDD)
+// convertVersionToDate splits version to YYYYMMDD format
+func convertVersionToDate(hyperKitVersionOutput string) string {
+	// `hyperkit -v` returns version info with multi line.
+	// Cut off like "hyperkit: v0.20190201-11-gc0dd46" or "hyperkit: 0.20190201"
+	versionLine := strings.Split(hyperKitVersionOutput, "\n")[0]
+	// Cut off like "v0.20190201-11-gc0dd46" or "0.20190201"
+	version := strings.Split(versionLine, ": ")[1]
+	// Format to "YYYYMMDD"
+	return splitHyperKitVersion(version)
+}
+
+// splitHyperKitVersion splits version from v0.YYYYMMDD-HH-xxxxxxx or 0.YYYYMMDD to YYYYMMDD
+func splitHyperKitVersion(version string) string {
+	if strings.Contains(version, ".") {
+		// Cut off like "20190201-11-gc0dd46" or "20190201"
+		version = strings.Split(version, ".")[1]
+	}
+	if len(version) >= 8 {
+		// Format to "20190201"
+		version = version[:8]
+	}
+	return version
+}

pkg/minikube/registry/drvs/hyperkit/hyperkit_test.go

@@ -0,0 +1,128 @@
+/*
+Copyright 2019 The Kubernetes Authors All rights reserved.
+
+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 hyperkit
+
+import (
+	"testing"
+)
+
+var (
+	versionOutputType1 = "hyperkit: v0.20190201-11-gc0dd46\n\nHomepage: https://github.com/docker/hyperkit\nLicense: BSD\n\n"
+	versionOutputType2 = "hyperkit: 0.20190201\n\nHomepage: https://github.com/docker/hyperkit\nLicense: BSD\n\n"
+)
+
+func TestSplitHyperKitVersion(t *testing.T) {
+	var tc = []struct {
+		desc, version, expect string
+	}{
+		{
+			desc:    "split type1 output to YYYYMMDD format",
+			version: "v.20190201-gc0dd46",
+			expect:  "20190201",
+		},
+		{
+			desc:    "split type2 output to YYYYMMDD format",
+			version: "0.20190201",
+			expect:  "20190201",
+		},
+		{
+			desc:    "non split YYYYMMDD output to YYYYMMDD format",
+			version: "20190201",
+			expect:  "20190201",
+		},
+		{
+			desc:    "split semver output to YYYYMMDD format",
+			version: "v1.0.0",
+			expect:  "0",
+		},
+	}
+	for _, test := range tc {
+		t.Run(test.desc, func(t *testing.T) {
+			version := splitHyperKitVersion(test.version)
+			if version != test.expect {
+				t.Fatalf("Error %v expected but result %v", test.expect, version)
+			}
+		})
+	}
+}
+
+func TestConvertVersionToDate(t *testing.T) {
+	var tc = []struct {
+		desc, versionOutput, expect string
+	}{
+		{
+			desc:          "split type1 output to YYYYMMDD format",
+			versionOutput: versionOutputType1,
+			expect:        "20190201",
+		},
+		{
+			desc:          "split type2 output to YYYYMMDD format",
+			versionOutput: versionOutputType2,
+			expect:        "20190201",
+		},
+		{
+			desc:          "split semver output to YYYYMMDD format",
+			versionOutput: "hyperkit: v1.0.0\n\nHomepage: https://github.com/docker/hyperkit\nLicense: BSD\n\n",
+			expect:        "0",
+		},
+	}
+	for _, test := range tc {
+		t.Run(test.desc, func(t *testing.T) {
+			version := convertVersionToDate(test.versionOutput)
+			if version != test.expect {
+				t.Fatalf("Error %v expected but result %v", test.expect, version)
+			}
+		})
+	}
+}
+
+func TestIsNewerVersion(t *testing.T) {
+	var tc = []struct {
+		desc, currentVersion, specificVersion string
+		isNew                                 bool
+	}{
+		{
+			desc:            "version check newer",
+			currentVersion:  "29991231",
+			specificVersion: "20190802",
+			isNew:           true,
+		},
+		{
+			desc:            "version check equal",
+			currentVersion:  "20190802",
+			specificVersion: "20190802",
+			isNew:           true,
+		},
+		{
+			desc:            "version check older",
+			currentVersion:  "20190201",
+			specificVersion: "20190802",
+			isNew:           false,
+		},
+	}
+	for _, test := range tc {
+		t.Run(test.desc, func(t *testing.T) {
+			isNew, err := isNewerVersion(test.currentVersion, test.specificVersion)
+			if err != nil {
+				t.Fatalf("Got unexpected error %v", err)
+			}
+			if isNew != test.isNew {
+				t.Fatalf("Error %v expected but result %v", test.isNew, isNew)
+			}
+		})
+	}
+}