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+
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+   you may not use this file except in compliance with the License.
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@@ -0,0 +1,16 @@
+# See the OWNERS docs at https://go.k8s.io/owners
+
+# Currently assigned this directory to sig-api-machinery since this is
+# an interface to the version definition in "k8s.io/apimachinery/pkg/version",
+# and also to sig-release since this version information is set up for
+# each release.
+
+approvers:
+  - sig-api-machinery-api-approvers
+  - release-engineering-approvers
+reviewers:
+  - sig-api-machinery-api-reviewers
+  - release-managers
+labels:
+  - sig/api-machinery
+  - sig/release
@@ -0,0 +1,64 @@
+/*
+Copyright 2019 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
+
+// Base version information.
+//
+// This is the fallback data used when version information from git is not
+// provided via go ldflags. It provides an approximation of the Kubernetes
+// version for ad-hoc builds (e.g. `go build`) that cannot get the version
+// information from git.
+//
+// If you are looking at these fields in the git tree, they look
+// strange. They are set by the build process with ldflags -X. The
+// in-tree values are dummy values used for "git archive", which also
+// works for GitHub tar downloads.
+var (
+	// TODO: Deprecate gitMajor and gitMinor, use only gitVersion
+	// instead. First step in deprecation, keep the fields but make
+	// them irrelevant. (Next we'll take it out, which may muck with
+	// scripts consuming the kubectl version output - but most of
+	// these should be looking at gitVersion already anyways.)
+	gitMajor string // major version, always numeric
+	gitMinor string // minor version, numeric possibly followed by "+"
+
+	// semantic version, derived by build scripts (see
+	// https://github.com/kubernetes/community/blob/master/contributors/design-proposals/release/versioning.md
+	// for a detailed discussion of this field)
+	//
+	// TODO: This field is still called "gitVersion" for legacy
+	// reasons. For prerelease versions, the build metadata on the
+	// semantic version is a git hash, but the version itself is no
+	// longer the direct output of "git describe", but a slight
+	// translation to be semver compliant.
+
+	// NOTE: The $Format strings are replaced during 'git archive' thanks to the
+	// companion .gitattributes file containing 'export-subst' in this same
+	// directory.  See also https://git-scm.com/docs/gitattributes
+	gitVersion   = "v0.0.0-master+$Format:%H$"
+	gitCommit    = "$Format:%H$" // sha1 from git, output of $(git rev-parse HEAD)
+	gitTreeState = ""            // state of git tree, either "clean" or "dirty"
+
+	buildDate = "1970-01-01T00:00:00Z" // build date in ISO8601 format, output of $(date -u +'%Y-%m-%dT%H:%M:%SZ')
+)
+
+const (
+	// DefaultKubeBinaryVersion is the hard coded k8 binary version based on the latest K8s release.
+	// It is supposed to be consistent with gitMajor and gitMinor, except for local tests, where gitMajor and gitMinor are "".
+	// Should update for each minor release!
+	DefaultKubeBinaryVersion = "1.35"
+)
@@ -0,0 +1,77 @@
+/*
+Copyright 2023 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 (
+	"fmt"
+	"sync/atomic"
+
+	utilversion "k8s.io/apimachinery/pkg/util/version"
+)
+
+var dynamicGitVersion atomic.Value
+
+func init() {
+	// initialize to static gitVersion
+	dynamicGitVersion.Store(gitVersion)
+}
+
+// SetDynamicVersion overrides the version returned as the GitVersion from Get().
+// The specified version must be non-empty, a valid semantic version, and must
+// match the major/minor/patch version of the default gitVersion.
+func SetDynamicVersion(dynamicVersion string) error {
+	if err := ValidateDynamicVersion(dynamicVersion); err != nil {
+		return err
+	}
+	dynamicGitVersion.Store(dynamicVersion)
+	return nil
+}
+
+// ValidateDynamicVersion ensures the given version is non-empty, a valid semantic version,
+// and matched the major/minor/patch version of the default gitVersion.
+func ValidateDynamicVersion(dynamicVersion string) error {
+	return validateDynamicVersion(dynamicVersion, gitVersion)
+}
+
+func validateDynamicVersion(dynamicVersion, defaultVersion string) error {
+	if len(dynamicVersion) == 0 {
+		return fmt.Errorf("version must not be empty")
+	}
+	if dynamicVersion == defaultVersion {
+		// allow no-op
+		return nil
+	}
+	vRuntime, err := utilversion.ParseSemantic(dynamicVersion)
+	if err != nil {
+		return err
+	}
+	// must match major/minor/patch of default version
+	var vDefault *utilversion.Version
+	if defaultVersion == "v0.0.0-master+$Format:%H$" {
+		// special-case the placeholder value which doesn't parse as a semantic version
+		vDefault, err = utilversion.ParseSemantic("v0.0.0-master")
+	} else {
+		vDefault, err = utilversion.ParseSemantic(defaultVersion)
+	}
+	if err != nil {
+		return err
+	}
+	if vRuntime.Major() != vDefault.Major() || vRuntime.Minor() != vDefault.Minor() || vRuntime.Patch() != vDefault.Patch() {
+		return fmt.Errorf("version %q must match major/minor/patch of default version %q", dynamicVersion, defaultVersion)
+	}
+	return nil
+}
@@ -0,0 +1,44 @@
+/*
+Copyright 2019 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 (
+	"fmt"
+	"runtime"
+
+	apimachineryversion "k8s.io/apimachinery/pkg/version"
+)
+
+// Get returns the overall codebase version. It's for detecting
+// what code a binary was built from.
+// The caller should use BinaryMajor and BinaryMinor to determine
+// the binary version. The Major and Minor fields are still set by git version for backwards compatibility.
+func Get() apimachineryversion.Info {
+	// These variables typically come from -ldflags settings and in
+	// their absence fallback to the settings in ./base.go
+	return apimachineryversion.Info{
+		Major:        gitMajor,
+		Minor:        gitMinor,
+		GitVersion:   dynamicGitVersion.Load().(string),
+		GitCommit:    gitCommit,
+		GitTreeState: gitTreeState,
+		BuildDate:    buildDate,
+		GoVersion:    runtime.Version(),
+		Compiler:     runtime.Compiler,
+		Platform:     fmt.Sprintf("%s/%s", runtime.GOOS, runtime.GOARCH),
+	}
+}