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Merge pull request #64008 from dixudx/fix_kubeadm_get_branch

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Automatic merge from submit-queue (batch tested with PRs 60012, 63692, 63977, 63960, 64008). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

uses a more resilient way to get branch name from version

**What this PR does / why we need it**:
Currently `getBranchFromVersion` uses a hard coded way to extract branch name from the version string. This is error prone, especially when bumping the minimum supported k8s version from v1.9 to v1.10.

This follow-up PR tries to use a more resilient way to handle this.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
xref #63920

**Special notes for your reviewer**:
/cc luxas timothysc 

**Release note**:

```release-note
None
```
This commit is contained in:
Kubernetes Submit Queue 2018-05-18 23:35:26 -07:00 committed by GitHub
commit 6187898b60
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2 changed files with 60 additions and 6 deletions
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13
cmd/kubeadm/app/phases/upgrade/compute.go
View File

@ -25,7 +25,7 @@ import (
"k8s.io/kubernetes/cmd/kubeadm/app/features"
"k8s.io/kubernetes/cmd/kubeadm/app/phases/addons/dns"
etcdutil "k8s.io/kubernetes/cmd/kubeadm/app/util/etcd"
"k8s.io/kubernetes/pkg/util/version"
versionutil "k8s.io/kubernetes/pkg/util/version"
)
// Upgrade defines an upgrade possibility to upgrade from a current version to a new one
@ -279,22 +279,23 @@ func GetAvailableUpgrades(versionGetterImpl VersionGetter, experimentalUpgradesA
}
func getBranchFromVersion(version string) string {
return strings.TrimPrefix(version, "v")[:4]
v := versionutil.MustParseGeneric(version)
return fmt.Sprintf("%d.%d", v.Major(), v.Minor())
}
func patchVersionBranchExists(clusterVersion, stableVersion *version.Version) bool {
func patchVersionBranchExists(clusterVersion, stableVersion *versionutil.Version) bool {
return stableVersion.AtLeast(clusterVersion)
}
func patchUpgradePossible(clusterVersion, patchVersion *version.Version) bool {
func patchUpgradePossible(clusterVersion, patchVersion *versionutil.Version) bool {
return clusterVersion.LessThan(patchVersion)
}
func rcUpgradePossible(clusterVersion, previousBranchLatestVersion *version.Version) bool {
func rcUpgradePossible(clusterVersion, previousBranchLatestVersion *versionutil.Version) bool {
return strings.HasPrefix(previousBranchLatestVersion.PreRelease(), "rc") && clusterVersion.LessThan(previousBranchLatestVersion)
}
func minorUpgradePossibleWithPatchRelease(stableVersion, patchVersion *version.Version) bool {
func minorUpgradePossibleWithPatchRelease(stableVersion, patchVersion *versionutil.Version) bool {
return patchVersion.LessThan(stableVersion)
}

53
cmd/kubeadm/app/phases/upgrade/compute_test.go
View File

@ -826,3 +826,56 @@ func TestKubeletUpgrade(t *testing.T) {
}
}
}
func TestGetBranchFromVersion(t *testing.T) {
testCases := []struct {
version string
expectedVersion string
}{
{
version: "v1.9.5",
expectedVersion: "1.9",
},
{
version: "v1.9.0-alpha.2",
expectedVersion: "1.9",
},
{
version: "v1.9.0-beta.0",
expectedVersion: "1.9",
},
{
version: "v1.9.0-rc.1",
expectedVersion: "1.9",
},
{
version: "v1.12.5",
expectedVersion: "1.12",
},
{
version: "v1.11.0-alpha.0",
expectedVersion: "1.11",
},
{
version: "v1.11.0-beta.1",
expectedVersion: "1.11",
},
{
version: "v1.11.0-rc.0",
expectedVersion: "1.11",
},
{
version: "1.12.5",
expectedVersion: "1.12",
},
}
for _, tc := range testCases {
v := getBranchFromVersion(tc.version)
if v != tc.expectedVersion {
t.Errorf("expected version %s, got %s", tc.expectedVersion, v)
}
}
}