rebase: bump the k8s-dependencies group with 1 update

Bumps the k8s-dependencies group with 1 update: [k8s.io/klog/v2](https://github.com/kubernetes/klog).

- [Release notes](https://github.com/kubernetes/klog/releases)
- [Changelog](https://github.com/kubernetes/klog/blob/main/RELEASE.md)
- [Commits](https://github.com/kubernetes/klog/compare/v2.100.1...v2.110.1)

---
updated-dependencies:
- dependency-name: k8s.io/klog/v2
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: k8s-dependencies
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -38,7 +38,7 @@ require (
 	k8s.io/apimachinery v0.28.3
 	k8s.io/client-go v12.0.0+incompatible
 	k8s.io/cloud-provider v0.28.3
-	k8s.io/klog/v2 v2.100.1
+	k8s.io/klog/v2 v2.110.1
 	k8s.io/kubernetes v1.28.3
 	k8s.io/mount-utils v0.28.3
 	k8s.io/pod-security-admission v0.0.0
@@ -74,7 +74,7 @@ require (
 	github.com/gemalto/flume v0.13.0 // indirect
 	github.com/ghodss/yaml v1.0.1-0.20190212211648-25d852aebe32 // indirect
 	github.com/go-jose/go-jose/v3 v3.0.0 // indirect
-	github.com/go-logr/logr v1.2.4 // indirect
+	github.com/go-logr/logr v1.3.0 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-openapi/jsonpointer v0.19.6 // indirect
 	github.com/go-openapi/jsonreference v0.20.2 // indirect

go.sum

@@ -833,8 +833,9 @@ github.com/go-logr/logr v0.2.0/go.mod h1:z6/tIYblkpsD+a4lm/fGIIU9mZ+XfAiaFtq7xTg
 github.com/go-logr/logr v1.2.0/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
 github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
 github.com/go-logr/logr v1.2.3/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
-github.com/go-logr/logr v1.2.4 h1:g01GSCwiDw2xSZfjJ2/T9M+S6pFdcNtFYsp+Y43HYDQ=
 github.com/go-logr/logr v1.2.4/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
+github.com/go-logr/logr v1.3.0 h1:2y3SDp0ZXuc6/cjLSZ+Q3ir+QB9T/iG5yYRXqsagWSY=
+github.com/go-logr/logr v1.3.0/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
 github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
 github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
 github.com/go-logr/zapr v0.1.0/go.mod h1:tabnROwaDl0UNxkVeFRbY8bwB37GwRv0P8lg6aAiEnk=
@@ -2309,8 +2310,9 @@ k8s.io/klog/v2 v2.0.0/go.mod h1:PBfzABfn139FHAV07az/IF9Wp1bkk3vpT2XSJ76fSDE=
 k8s.io/klog/v2 v2.2.0/go.mod h1:Od+F08eJP+W3HUb4pSrPpgp9DGU4GzlpG/TmITuYh/Y=
 k8s.io/klog/v2 v2.4.0/go.mod h1:Od+F08eJP+W3HUb4pSrPpgp9DGU4GzlpG/TmITuYh/Y=
 k8s.io/klog/v2 v2.80.1/go.mod h1:y1WjHnz7Dj687irZUWR/WLkLc5N1YHtjLdmgWjndZn0=
-k8s.io/klog/v2 v2.100.1 h1:7WCHKK6K8fNhTqfBhISHQ97KrnJNFZMcQvKp7gP/tmg=
 k8s.io/klog/v2 v2.100.1/go.mod h1:y1WjHnz7Dj687irZUWR/WLkLc5N1YHtjLdmgWjndZn0=
+k8s.io/klog/v2 v2.110.1 h1:U/Af64HJf7FcwMcXyKm2RPM22WZzyR7OSpYj5tg3cL0=
+k8s.io/klog/v2 v2.110.1/go.mod h1:YGtd1984u+GgbuZ7e08/yBuAfKLSO0+uR1Fhi6ExXjo=
 k8s.io/kms v0.28.3 h1:jYwwAe96XELNjYWv1G4kNzizcFoZ50OOElvPansbw70=
 k8s.io/kms v0.28.3/go.mod h1:kSMjU2tg7vjqqoWVVCcmPmNZ/CofPsoTbSxAipCvZuE=
 k8s.io/kube-openapi v0.0.0-20180731170545-e3762e86a74c/go.mod h1:BXM9ceUBTj2QnfH2MK1odQs778ajze1RxcmP6S8RVVc=

vendor/github.com/go-logr/logr/README.md

@@ -1,6 +1,7 @@
 # A minimal logging API for Go
 
 [![Go Reference](https://pkg.go.dev/badge/github.com/go-logr/logr.svg)](https://pkg.go.dev/github.com/go-logr/logr)
+[![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/go-logr/logr/badge)](https://securityscorecards.dev/viewer/?platform=github.com&org=go-logr&repo=logr)
 
 logr offers an(other) opinion on how Go programs and libraries can do logging
 without becoming coupled to a particular logging implementation.  This is not
@@ -73,6 +74,29 @@ received:
 If the Go standard library had defined an interface for logging, this project
 probably would not be needed.  Alas, here we are.
 
+When the Go developers started developing such an interface with
+[slog](https://github.com/golang/go/issues/56345), they adopted some of the
+logr design but also left out some parts and changed others:
+
+| Feature | logr | slog |
+|---------|------|------|
+| High-level API | `Logger` (passed by value) | `Logger` (passed by [pointer](https://github.com/golang/go/issues/59126)) |
+| Low-level API | `LogSink` | `Handler` |
+| Stack unwinding | done by `LogSink` | done by `Logger` |
+| Skipping helper functions | `WithCallDepth`, `WithCallStackHelper` | [not supported by Logger](https://github.com/golang/go/issues/59145) |
+| Generating a value for logging on demand | `Marshaler` | `LogValuer` |
+| Log levels | >= 0, higher meaning "less important" | positive and negative, with 0 for "info" and higher meaning "more important" |
+| Error log entries | always logged, don't have a verbosity level | normal log entries with level >= `LevelError` |
+| Passing logger via context | `NewContext`, `FromContext` | no API |
+| Adding a name to a logger | `WithName` | no API |
+| Modify verbosity of log entries in a call chain | `V` | no API |
+| Grouping of key/value pairs | not supported | `WithGroup`, `GroupValue` |
+
+The high-level slog API is explicitly meant to be one of many different APIs
+that can be layered on top of a shared `slog.Handler`. logr is one such
+alternative API, with [interoperability](#slog-interoperability) provided by the [`slogr`](slogr)
+package.
+
 ### Inspiration
 
 Before you consider this package, please read [this blog post by the
@@ -118,6 +142,91 @@ There are implementations for the following logging libraries:
 - **github.com/go-kit/log**: [gokitlogr](https://github.com/tonglil/gokitlogr) (also compatible with github.com/go-kit/kit/log since v0.12.0)
 - **bytes.Buffer** (writing to a buffer): [bufrlogr](https://github.com/tonglil/buflogr) (useful for ensuring values were logged, like during testing)
 
+## slog interoperability
+
+Interoperability goes both ways, using the `logr.Logger` API with a `slog.Handler`
+and using the `slog.Logger` API with a `logr.LogSink`. [slogr](./slogr) provides `NewLogr` and
+`NewSlogHandler` API calls to convert between a `logr.Logger` and a `slog.Handler`.
+As usual, `slog.New` can be used to wrap such a `slog.Handler` in the high-level
+slog API. `slogr` itself leaves that to the caller.
+
+## Using a `logr.Sink` as backend for slog
+
+Ideally, a logr sink implementation should support both logr and slog by
+implementing both the normal logr interface(s) and `slogr.SlogSink`.  Because
+of a conflict in the parameters of the common `Enabled` method, it is [not
+possible to implement both slog.Handler and logr.Sink in the same
+type](https://github.com/golang/go/issues/59110).
+
+If both are supported, log calls can go from the high-level APIs to the backend
+without the need to convert parameters. `NewLogr` and `NewSlogHandler` can
+convert back and forth without adding additional wrappers, with one exception:
+when `Logger.V` was used to adjust the verbosity for a `slog.Handler`, then
+`NewSlogHandler` has to use a wrapper which adjusts the verbosity for future
+log calls.
+
+Such an implementation should also support values that implement specific
+interfaces from both packages for logging (`logr.Marshaler`, `slog.LogValuer`,
+`slog.GroupValue`). logr does not convert those.
+
+Not supporting slog has several drawbacks:
+- Recording source code locations works correctly if the handler gets called
+  through `slog.Logger`, but may be wrong in other cases. That's because a
+  `logr.Sink` does its own stack unwinding instead of using the program counter
+  provided by the high-level API.
+- slog levels <= 0 can be mapped to logr levels by negating the level without a
+  loss of information. But all slog levels > 0 (e.g. `slog.LevelWarning` as
+  used by `slog.Logger.Warn`) must be mapped to 0 before calling the sink
+  because logr does not support "more important than info" levels.
+- The slog group concept is supported by prefixing each key in a key/value
+  pair with the group names, separated by a dot. For structured output like
+  JSON it would be better to group the key/value pairs inside an object.
+- Special slog values and interfaces don't work as expected.
+- The overhead is likely to be higher.
+
+These drawbacks are severe enough that applications using a mixture of slog and
+logr should switch to a different backend.
+
+## Using a `slog.Handler` as backend for logr
+
+Using a plain `slog.Handler` without support for logr works better than the
+other direction:
+- All logr verbosity levels can be mapped 1:1 to their corresponding slog level
+  by negating them.
+- Stack unwinding is done by the `slogr.SlogSink` and the resulting program
+  counter is passed to the `slog.Handler`.
+- Names added via `Logger.WithName` are gathered and recorded in an additional
+  attribute with `logger` as key and the names separated by slash as value.
+- `Logger.Error` is turned into a log record with `slog.LevelError` as level
+  and an additional attribute with `err` as key, if an error was provided.
+
+The main drawback is that `logr.Marshaler` will not be supported. Types should
+ideally support both `logr.Marshaler` and `slog.Valuer`. If compatibility
+with logr implementations without slog support is not important, then
+`slog.Valuer` is sufficient.
+
+## Context support for slog
+
+Storing a logger in a `context.Context` is not supported by
+slog. `logr.NewContext` and `logr.FromContext` can be used with slog like this
+to fill this gap:
+
+    func HandlerFromContext(ctx context.Context) slog.Handler {
+        logger, err := logr.FromContext(ctx)
+        if err == nil {
+            return slogr.NewSlogHandler(logger)
+        }
+        return slog.Default().Handler()
+    }
+
+    func ContextWithHandler(ctx context.Context, handler slog.Handler) context.Context {
+        return logr.NewContext(ctx, slogr.NewLogr(handler))
+    }
+
+The downside is that storing and retrieving a `slog.Handler` needs more
+allocations compared to using a `logr.Logger`. Therefore the recommendation is
+to use the `logr.Logger` API in code which uses contextual logging.
+
 ## FAQ
 
 ### Conceptual
@@ -241,7 +350,9 @@ Otherwise, you can start out with `0` as "you always want to see this",
 
 Then gradually choose levels in between as you need them, working your way
 down from 10 (for debug and trace style logs) and up from 1 (for chattier
-info-type logs.)
+info-type logs). For reference, slog pre-defines -4 for debug logs
+(corresponds to 4 in logr), which matches what is
+[recommended for Kubernetes](https://github.com/kubernetes/community/blob/master/contributors/devel/sig-instrumentation/logging.md#what-method-to-use).
 
 #### How do I choose my keys?
 

vendor/github.com/go-logr/logr/SECURITY.md

@@ -0,0 +1,18 @@
+# Security Policy
+
+If you have discovered a security vulnerability in this project, please report it
+privately. **Do not disclose it as a public issue.** This gives us time to work with you
+to fix the issue before public exposure, reducing the chance that the exploit will be
+used before a patch is released.
+
+You may submit the report in the following ways:
+
+- send an email to go-logr-security@googlegroups.com
+- send us a [private vulnerability report](https://github.com/go-logr/logr/security/advisories/new)
+
+Please provide the following information in your report:
+
+- A description of the vulnerability and its impact
+- How to reproduce the issue
+
+We ask that you give us 90 days to work on a fix before public exposure.

vendor/github.com/go-logr/logr/funcr/funcr.go

@@ -116,17 +116,17 @@ type Options struct {
 	// Equivalent hooks are offered for key-value pairs saved via
 	// logr.Logger.WithValues or Formatter.AddValues (see RenderValuesHook) and
 	// for user-provided pairs (see RenderArgsHook).
-	RenderBuiltinsHook func(kvList []interface{}) []interface{}
+	RenderBuiltinsHook func(kvList []any) []any
 
 	// RenderValuesHook is the same as RenderBuiltinsHook, except that it is
 	// only called for key-value pairs saved via logr.Logger.WithValues.  See
 	// RenderBuiltinsHook for more details.
-	RenderValuesHook func(kvList []interface{}) []interface{}
+	RenderValuesHook func(kvList []any) []any
 
 	// RenderArgsHook is the same as RenderBuiltinsHook, except that it is only
 	// called for key-value pairs passed directly to Info and Error.  See
 	// RenderBuiltinsHook for more details.
-	RenderArgsHook func(kvList []interface{}) []interface{}
+	RenderArgsHook func(kvList []any) []any
 
 	// MaxLogDepth tells funcr how many levels of nested fields (e.g. a struct
 	// that contains a struct, etc.) it may log.  Every time it finds a struct,
@@ -163,7 +163,7 @@ func (l fnlogger) WithName(name string) logr.LogSink {
 	return &l
 }
 
-func (l fnlogger) WithValues(kvList ...interface{}) logr.LogSink {
+func (l fnlogger) WithValues(kvList ...any) logr.LogSink {
 	l.Formatter.AddValues(kvList)
 	return &l
 }
@@ -173,12 +173,12 @@ func (l fnlogger) WithCallDepth(depth int) logr.LogSink {
 	return &l
 }
 
-func (l fnlogger) Info(level int, msg string, kvList ...interface{}) {
+func (l fnlogger) Info(level int, msg string, kvList ...any) {
 	prefix, args := l.FormatInfo(level, msg, kvList)
 	l.write(prefix, args)
 }
 
-func (l fnlogger) Error(err error, msg string, kvList ...interface{}) {
+func (l fnlogger) Error(err error, msg string, kvList ...any) {
 	prefix, args := l.FormatError(err, msg, kvList)
 	l.write(prefix, args)
 }
@@ -229,7 +229,7 @@ func newFormatter(opts Options, outfmt outputFormat) Formatter {
 type Formatter struct {
 	outputFormat outputFormat
 	prefix       string
-	values       []interface{}
+	values       []any
 	valuesStr    string
 	depth        int
 	opts         *Options
@@ -246,10 +246,10 @@ const (
 )
 
 // PseudoStruct is a list of key-value pairs that gets logged as a struct.
-type PseudoStruct []interface{}
+type PseudoStruct []any
 
 // render produces a log line, ready to use.
-func (f Formatter) render(builtins, args []interface{}) string {
+func (f Formatter) render(builtins, args []any) string {
 	// Empirically bytes.Buffer is faster than strings.Builder for this.
 	buf := bytes.NewBuffer(make([]byte, 0, 1024))
 	if f.outputFormat == outputJSON {
@@ -292,7 +292,7 @@ func (f Formatter) render(builtins, args []interface{}) string {
 // This function returns a potentially modified version of kvList, which
 // ensures that there is a value for every key (adding a value if needed) and
 // that each key is a string (substituting a key if needed).
-func (f Formatter) flatten(buf *bytes.Buffer, kvList []interface{}, continuing bool, escapeKeys bool) []interface{} {
+func (f Formatter) flatten(buf *bytes.Buffer, kvList []any, continuing bool, escapeKeys bool) []any {
 	// This logic overlaps with sanitize() but saves one type-cast per key,
 	// which can be measurable.
 	if len(kvList)%2 != 0 {
@@ -334,7 +334,7 @@ func (f Formatter) flatten(buf *bytes.Buffer, kvList []interface{}, continuing b
 	return kvList
 }
 
-func (f Formatter) pretty(value interface{}) string {
+func (f Formatter) pretty(value any) string {
 	return f.prettyWithFlags(value, 0, 0)
 }
 
@@ -343,7 +343,7 @@ const (
 )
 
 // TODO: This is not fast. Most of the overhead goes here.
-func (f Formatter) prettyWithFlags(value interface{}, flags uint32, depth int) string {
+func (f Formatter) prettyWithFlags(value any, flags uint32, depth int) string {
 	if depth > f.opts.MaxLogDepth {
 		return `"<max-log-depth-exceeded>"`
 	}
@@ -614,7 +614,7 @@ func isEmpty(v reflect.Value) bool {
 	return false
 }
 
-func invokeMarshaler(m logr.Marshaler) (ret interface{}) {
+func invokeMarshaler(m logr.Marshaler) (ret any) {
 	defer func() {
 		if r := recover(); r != nil {
 			ret = fmt.Sprintf("<panic: %s>", r)
@@ -675,12 +675,12 @@ func (f Formatter) caller() Caller {
 
 const noValue = "<no-value>"
 
-func (f Formatter) nonStringKey(v interface{}) string {
+func (f Formatter) nonStringKey(v any) string {
 	return fmt.Sprintf("<non-string-key: %s>", f.snippet(v))
 }
 
 // snippet produces a short snippet string of an arbitrary value.
-func (f Formatter) snippet(v interface{}) string {
+func (f Formatter) snippet(v any) string {
 	const snipLen = 16
 
 	snip := f.pretty(v)
@@ -693,7 +693,7 @@ func (f Formatter) snippet(v interface{}) string {
 // sanitize ensures that a list of key-value pairs has a value for every key
 // (adding a value if needed) and that each key is a string (substituting a key
 // if needed).
-func (f Formatter) sanitize(kvList []interface{}) []interface{} {
+func (f Formatter) sanitize(kvList []any) []any {
 	if len(kvList)%2 != 0 {
 		kvList = append(kvList, noValue)
 	}
@@ -727,8 +727,8 @@ func (f Formatter) GetDepth() int {
 // FormatInfo renders an Info log message into strings.  The prefix will be
 // empty when no names were set (via AddNames), or when the output is
 // configured for JSON.
-func (f Formatter) FormatInfo(level int, msg string, kvList []interface{}) (prefix, argsStr string) {
+func (f Formatter) FormatInfo(level int, msg string, kvList []any) (prefix, argsStr string) {
-	args := make([]interface{}, 0, 64) // using a constant here impacts perf
+	args := make([]any, 0, 64) // using a constant here impacts perf
 	prefix = f.prefix
 	if f.outputFormat == outputJSON {
 		args = append(args, "logger", prefix)
@@ -745,10 +745,10 @@ func (f Formatter) FormatInfo(level int, msg string, kvList []interface{}) (pref
 }
 
 // FormatError renders an Error log message into strings.  The prefix will be
-// empty when no names were set (via AddNames),  or when the output is
+// empty when no names were set (via AddNames), or when the output is
 // configured for JSON.
-func (f Formatter) FormatError(err error, msg string, kvList []interface{}) (prefix, argsStr string) {
+func (f Formatter) FormatError(err error, msg string, kvList []any) (prefix, argsStr string) {
-	args := make([]interface{}, 0, 64) // using a constant here impacts perf
+	args := make([]any, 0, 64) // using a constant here impacts perf
 	prefix = f.prefix
 	if f.outputFormat == outputJSON {
 		args = append(args, "logger", prefix)
@@ -761,12 +761,12 @@ func (f Formatter) FormatError(err error, msg string, kvList []interface{}) (pre
 		args = append(args, "caller", f.caller())
 	}
 	args = append(args, "msg", msg)
-	var loggableErr interface{}
+	var loggableErr any
 	if err != nil {
 		loggableErr = err.Error()
 	}
 	args = append(args, "error", loggableErr)
-	return f.prefix, f.render(args, kvList)
+	return prefix, f.render(args, kvList)
 }
 
 // AddName appends the specified name.  funcr uses '/' characters to separate
@@ -781,7 +781,7 @@ func (f *Formatter) AddName(name string) {
 
 // AddValues adds key-value pairs to the set of saved values to be logged with
 // each log line.
-func (f *Formatter) AddValues(kvList []interface{}) {
+func (f *Formatter) AddValues(kvList []any) {
 	// Three slice args forces a copy.
 	n := len(f.values)
 	f.values = append(f.values[:n:n], kvList...)

vendor/github.com/go-logr/logr/logr.go

@@ -127,9 +127,9 @@ limitations under the License.
 // such a value can call its methods without having to check whether the
 // instance is ready for use.
 //
-// Calling methods with the null logger (Logger{}) as instance will crash
+// The zero logger (= Logger{}) is identical to Discard() and discards all log
-// because it has no LogSink. Therefore this null logger should never be passed
+// entries. Code that receives a Logger by value can simply call it, the methods
-// around. For cases where passing a logger is optional, a pointer to Logger
+// will never crash. For cases where passing a logger is optional, a pointer to Logger
 // should be used.
 //
 // # Key Naming Conventions
@@ -258,6 +258,12 @@ type Logger struct {
 // Enabled tests whether this Logger is enabled.  For example, commandline
 // flags might be used to set the logging verbosity and disable some info logs.
 func (l Logger) Enabled() bool {
+	// Some implementations of LogSink look at the caller in Enabled (e.g.
+	// different verbosity levels per package or file), but we only pass one
+	// CallDepth in (via Init).  This means that all calls from Logger to the
+	// LogSink's Enabled, Info, and Error methods must have the same number of
+	// frames.  In other words, Logger methods can't call other Logger methods
+	// which call these LogSink methods unless we do it the same in all paths.
 	return l.sink != nil && l.sink.Enabled(l.level)
 }
 
@@ -267,11 +273,11 @@ func (l Logger) Enabled() bool {
 // line.  The key/value pairs can then be used to add additional variable
 // information.  The key/value pairs must alternate string keys and arbitrary
 // values.
-func (l Logger) Info(msg string, keysAndValues ...interface{}) {
+func (l Logger) Info(msg string, keysAndValues ...any) {
 	if l.sink == nil {
 		return
 	}
-	if l.Enabled() {
+	if l.sink.Enabled(l.level) { // see comment in Enabled
 		if withHelper, ok := l.sink.(CallStackHelperLogSink); ok {
 			withHelper.GetCallStackHelper()()
 		}
@@ -289,7 +295,7 @@ func (l Logger) Info(msg string, keysAndValues ...interface{}) {
 // while the err argument should be used to attach the actual error that
 // triggered this log line, if present. The err parameter is optional
 // and nil may be passed instead of an error instance.
-func (l Logger) Error(err error, msg string, keysAndValues ...interface{}) {
+func (l Logger) Error(err error, msg string, keysAndValues ...any) {
 	if l.sink == nil {
 		return
 	}
@@ -314,9 +320,16 @@ func (l Logger) V(level int) Logger {
 	return l
 }
 
+// GetV returns the verbosity level of the logger. If the logger's LogSink is
+// nil as in the Discard logger, this will always return 0.
+func (l Logger) GetV() int {
+	// 0 if l.sink nil because of the if check in V above.
+	return l.level
+}
+
 // WithValues returns a new Logger instance with additional key/value pairs.
 // See Info for documentation on how key/value pairs work.
-func (l Logger) WithValues(keysAndValues ...interface{}) Logger {
+func (l Logger) WithValues(keysAndValues ...any) Logger {
 	if l.sink == nil {
 		return l
 	}
@@ -467,15 +480,15 @@ type LogSink interface {
 	// The level argument is provided for optional logging.  This method will
 	// only be called when Enabled(level) is true. See Logger.Info for more
 	// details.
-	Info(level int, msg string, keysAndValues ...interface{})
+	Info(level int, msg string, keysAndValues ...any)
 
 	// Error logs an error, with the given message and key/value pairs as
 	// context.  See Logger.Error for more details.
-	Error(err error, msg string, keysAndValues ...interface{})
+	Error(err error, msg string, keysAndValues ...any)
 
 	// WithValues returns a new LogSink with additional key/value pairs.  See
 	// Logger.WithValues for more details.
-	WithValues(keysAndValues ...interface{}) LogSink
+	WithValues(keysAndValues ...any) LogSink
 
 	// WithName returns a new LogSink with the specified name appended.  See
 	// Logger.WithName for more details.
@@ -546,5 +559,5 @@ type Marshaler interface {
 	//     with exported fields
 	//
 	// It may return any value of any type.
-	MarshalLog() interface{}
+	MarshalLog() any
 }

vendor/github.com/go-logr/logr/slogr/sloghandler.go

@@ -0,0 +1,168 @@
+//go:build go1.21
+// +build go1.21
+
+/*
+Copyright 2023 The logr 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 slogr
+
+import (
+	"context"
+	"log/slog"
+
+	"github.com/go-logr/logr"
+)
+
+type slogHandler struct {
+	// May be nil, in which case all logs get discarded.
+	sink logr.LogSink
+	// Non-nil if sink is non-nil and implements SlogSink.
+	slogSink SlogSink
+
+	// groupPrefix collects values from WithGroup calls. It gets added as
+	// prefix to value keys when handling a log record.
+	groupPrefix string
+
+	// levelBias can be set when constructing the handler to influence the
+	// slog.Level of log records. A positive levelBias reduces the
+	// slog.Level value. slog has no API to influence this value after the
+	// handler got created, so it can only be set indirectly through
+	// Logger.V.
+	levelBias slog.Level
+}
+
+var _ slog.Handler = &slogHandler{}
+
+// groupSeparator is used to concatenate WithGroup names and attribute keys.
+const groupSeparator = "."
+
+// GetLevel is used for black box unit testing.
+func (l *slogHandler) GetLevel() slog.Level {
+	return l.levelBias
+}
+
+func (l *slogHandler) Enabled(ctx context.Context, level slog.Level) bool {
+	return l.sink != nil && (level >= slog.LevelError || l.sink.Enabled(l.levelFromSlog(level)))
+}
+
+func (l *slogHandler) Handle(ctx context.Context, record slog.Record) error {
+	if l.slogSink != nil {
+		// Only adjust verbosity level of log entries < slog.LevelError.
+		if record.Level < slog.LevelError {
+			record.Level -= l.levelBias
+		}
+		return l.slogSink.Handle(ctx, record)
+	}
+
+	// No need to check for nil sink here because Handle will only be called
+	// when Enabled returned true.
+
+	kvList := make([]any, 0, 2*record.NumAttrs())
+	record.Attrs(func(attr slog.Attr) bool {
+		if attr.Key != "" {
+			kvList = append(kvList, l.addGroupPrefix(attr.Key), attr.Value.Resolve().Any())
+		}
+		return true
+	})
+	if record.Level >= slog.LevelError {
+		l.sinkWithCallDepth().Error(nil, record.Message, kvList...)
+	} else {
+		level := l.levelFromSlog(record.Level)
+		l.sinkWithCallDepth().Info(level, record.Message, kvList...)
+	}
+	return nil
+}
+
+// sinkWithCallDepth adjusts the stack unwinding so that when Error or Info
+// are called by Handle, code in slog gets skipped.
+//
+// This offset currently (Go 1.21.0) works for calls through
+// slog.New(NewSlogHandler(...)).  There's no guarantee that the call
+// chain won't change. Wrapping the handler will also break unwinding. It's
+// still better than not adjusting at all....
+//
+// This cannot be done when constructing the handler because NewLogr needs
+// access to the original sink without this adjustment. A second copy would
+// work, but then WithAttrs would have to be called for both of them.
+func (l *slogHandler) sinkWithCallDepth() logr.LogSink {
+	if sink, ok := l.sink.(logr.CallDepthLogSink); ok {
+		return sink.WithCallDepth(2)
+	}
+	return l.sink
+}
+
+func (l *slogHandler) WithAttrs(attrs []slog.Attr) slog.Handler {
+	if l.sink == nil || len(attrs) == 0 {
+		return l
+	}
+
+	copy := *l
+	if l.slogSink != nil {
+		copy.slogSink = l.slogSink.WithAttrs(attrs)
+		copy.sink = copy.slogSink
+	} else {
+		kvList := make([]any, 0, 2*len(attrs))
+		for _, attr := range attrs {
+			if attr.Key != "" {
+				kvList = append(kvList, l.addGroupPrefix(attr.Key), attr.Value.Resolve().Any())
+			}
+		}
+		copy.sink = l.sink.WithValues(kvList...)
+	}
+	return &copy
+}
+
+func (l *slogHandler) WithGroup(name string) slog.Handler {
+	if l.sink == nil {
+		return l
+	}
+	copy := *l
+	if l.slogSink != nil {
+		copy.slogSink = l.slogSink.WithGroup(name)
+		copy.sink = l.slogSink
+	} else {
+		copy.groupPrefix = copy.addGroupPrefix(name)
+	}
+	return &copy
+}
+
+func (l *slogHandler) addGroupPrefix(name string) string {
+	if l.groupPrefix == "" {
+		return name
+	}
+	return l.groupPrefix + groupSeparator + name
+}
+
+// levelFromSlog adjusts the level by the logger's verbosity and negates it.
+// It ensures that the result is >= 0. This is necessary because the result is
+// passed to a logr.LogSink and that API did not historically document whether
+// levels could be negative or what that meant.
+//
+// Some example usage:
+//     logrV0 := getMyLogger()
+//     logrV2 := logrV0.V(2)
+//     slogV2 := slog.New(slogr.NewSlogHandler(logrV2))
+//     slogV2.Debug("msg") // =~ logrV2.V(4) =~ logrV0.V(6)
+//     slogV2.Info("msg")  // =~  logrV2.V(0) =~ logrV0.V(2)
+//     slogv2.Warn("msg")  // =~ logrV2.V(-4) =~ logrV0.V(0)
+func (l *slogHandler) levelFromSlog(level slog.Level) int {
+	result := -level
+	result += l.levelBias // in case the original logr.Logger had a V level
+	if result < 0 {
+		result = 0 // because logr.LogSink doesn't expect negative V levels
+	}
+	return int(result)
+}

vendor/github.com/go-logr/logr/slogr/slogr.go

@@ -0,0 +1,108 @@
+//go:build go1.21
+// +build go1.21
+
+/*
+Copyright 2023 The logr 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 slogr enables usage of a slog.Handler with logr.Logger as front-end
+// API and of a logr.LogSink through the slog.Handler and thus slog.Logger
+// APIs.
+//
+// See the README in the top-level [./logr] package for a discussion of
+// interoperability.
+package slogr
+
+import (
+	"context"
+	"log/slog"
+
+	"github.com/go-logr/logr"
+)
+
+// NewLogr returns a logr.Logger which writes to the slog.Handler.
+//
+// The logr verbosity level is mapped to slog levels such that V(0) becomes
+// slog.LevelInfo and V(4) becomes slog.LevelDebug.
+func NewLogr(handler slog.Handler) logr.Logger {
+	if handler, ok := handler.(*slogHandler); ok {
+		if handler.sink == nil {
+			return logr.Discard()
+		}
+		return logr.New(handler.sink).V(int(handler.levelBias))
+	}
+	return logr.New(&slogSink{handler: handler})
+}
+
+// NewSlogHandler returns a slog.Handler which writes to the same sink as the logr.Logger.
+//
+// The returned logger writes all records with level >= slog.LevelError as
+// error log entries with LogSink.Error, regardless of the verbosity level of
+// the logr.Logger:
+//
+//	logger := <some logr.Logger with 0 as verbosity level>
+//	slog.New(NewSlogHandler(logger.V(10))).Error(...) -> logSink.Error(...)
+//
+// The level of all other records gets reduced by the verbosity
+// level of the logr.Logger and the result is negated. If it happens
+// to be negative, then it gets replaced by zero because a LogSink
+// is not expected to handled negative levels:
+//
+//	slog.New(NewSlogHandler(logger)).Debug(...) -> logger.GetSink().Info(level=4, ...)
+//	slog.New(NewSlogHandler(logger)).Warning(...) -> logger.GetSink().Info(level=0, ...)
+//	slog.New(NewSlogHandler(logger)).Info(...) -> logger.GetSink().Info(level=0, ...)
+//	slog.New(NewSlogHandler(logger.V(4))).Info(...) -> logger.GetSink().Info(level=4, ...)
+func NewSlogHandler(logger logr.Logger) slog.Handler {
+	if sink, ok := logger.GetSink().(*slogSink); ok && logger.GetV() == 0 {
+		return sink.handler
+	}
+
+	handler := &slogHandler{sink: logger.GetSink(), levelBias: slog.Level(logger.GetV())}
+	if slogSink, ok := handler.sink.(SlogSink); ok {
+		handler.slogSink = slogSink
+	}
+	return handler
+}
+
+// SlogSink is an optional interface that a LogSink can implement to support
+// logging through the slog.Logger or slog.Handler APIs better. It then should
+// also support special slog values like slog.Group. When used as a
+// slog.Handler, the advantages are:
+//
+//   - stack unwinding gets avoided in favor of logging the pre-recorded PC,
+//     as intended by slog
+//   - proper grouping of key/value pairs via WithGroup
+//   - verbosity levels > slog.LevelInfo can be recorded
+//   - less overhead
+//
+// Both APIs (logr.Logger and slog.Logger/Handler) then are supported equally
+// well. Developers can pick whatever API suits them better and/or mix
+// packages which use either API in the same binary with a common logging
+// implementation.
+//
+// This interface is necessary because the type implementing the LogSink
+// interface cannot also implement the slog.Handler interface due to the
+// different prototype of the common Enabled method.
+//
+// An implementation could support both interfaces in two different types, but then
+// additional interfaces would be needed to convert between those types in NewLogr
+// and NewSlogHandler.
+type SlogSink interface {
+	logr.LogSink
+
+	Handle(ctx context.Context, record slog.Record) error
+	WithAttrs(attrs []slog.Attr) SlogSink
+	WithGroup(name string) SlogSink
+}

vendor/github.com/go-logr/logr/slogr/slogsink.go

@@ -0,0 +1,122 @@
+//go:build go1.21
+// +build go1.21
+
+/*
+Copyright 2023 The logr 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 slogr
+
+import (
+	"context"
+	"log/slog"
+	"runtime"
+	"time"
+
+	"github.com/go-logr/logr"
+)
+
+var (
+	_ logr.LogSink          = &slogSink{}
+	_ logr.CallDepthLogSink = &slogSink{}
+	_ Underlier             = &slogSink{}
+)
+
+// Underlier is implemented by the LogSink returned by NewLogr.
+type Underlier interface {
+	// GetUnderlying returns the Handler used by the LogSink.
+	GetUnderlying() slog.Handler
+}
+
+const (
+	// nameKey is used to log the `WithName` values as an additional attribute.
+	nameKey = "logger"
+
+	// errKey is used to log the error parameter of Error as an additional attribute.
+	errKey = "err"
+)
+
+type slogSink struct {
+	callDepth int
+	name      string
+	handler   slog.Handler
+}
+
+func (l *slogSink) Init(info logr.RuntimeInfo) {
+	l.callDepth = info.CallDepth
+}
+
+func (l *slogSink) GetUnderlying() slog.Handler {
+	return l.handler
+}
+
+func (l *slogSink) WithCallDepth(depth int) logr.LogSink {
+	newLogger := *l
+	newLogger.callDepth += depth
+	return &newLogger
+}
+
+func (l *slogSink) Enabled(level int) bool {
+	return l.handler.Enabled(context.Background(), slog.Level(-level))
+}
+
+func (l *slogSink) Info(level int, msg string, kvList ...interface{}) {
+	l.log(nil, msg, slog.Level(-level), kvList...)
+}
+
+func (l *slogSink) Error(err error, msg string, kvList ...interface{}) {
+	l.log(err, msg, slog.LevelError, kvList...)
+}
+
+func (l *slogSink) log(err error, msg string, level slog.Level, kvList ...interface{}) {
+	var pcs [1]uintptr
+	// skip runtime.Callers, this function, Info/Error, and all helper functions above that.
+	runtime.Callers(3+l.callDepth, pcs[:])
+
+	record := slog.NewRecord(time.Now(), level, msg, pcs[0])
+	if l.name != "" {
+		record.AddAttrs(slog.String(nameKey, l.name))
+	}
+	if err != nil {
+		record.AddAttrs(slog.Any(errKey, err))
+	}
+	record.Add(kvList...)
+	l.handler.Handle(context.Background(), record)
+}
+
+func (l slogSink) WithName(name string) logr.LogSink {
+	if l.name != "" {
+		l.name = l.name + "/"
+	}
+	l.name += name
+	return &l
+}
+
+func (l slogSink) WithValues(kvList ...interface{}) logr.LogSink {
+	l.handler = l.handler.WithAttrs(kvListToAttrs(kvList...))
+	return &l
+}
+
+func kvListToAttrs(kvList ...interface{}) []slog.Attr {
+	// We don't need the record itself, only its Add method.
+	record := slog.NewRecord(time.Time{}, 0, "", 0)
+	record.Add(kvList...)
+	attrs := make([]slog.Attr, 0, record.NumAttrs())
+	record.Attrs(func(attr slog.Attr) bool {
+		attrs = append(attrs, attr)
+		return true
+	})
+	return attrs
+}

vendor/k8s.io/klog/v2/.golangci.yaml

@@ -0,0 +1,6 @@
+linters:
+  disable-all: true
+  enable: # sorted alphabetical
+    - gofmt
+    - misspell
+    - revive

vendor/k8s.io/klog/v2/internal/buffer/buffer.go

@@ -30,14 +30,16 @@ import (
 var (
 	// Pid is inserted into log headers. Can be overridden for tests.
 	Pid = os.Getpid()
+
+	// Time, if set, will be used instead of the actual current time.
+	Time *time.Time
 )
 
 // Buffer holds a single byte.Buffer for reuse. The zero value is ready for
 // use. It also provides some helper methods for output formatting.
 type Buffer struct {
 	bytes.Buffer
-	Tmp  [64]byte // temporary byte array for creating headers.
+	Tmp [64]byte // temporary byte array for creating headers.
-	next *Buffer
 }
 
 var buffers = sync.Pool{
@@ -122,6 +124,9 @@ func (buf *Buffer) FormatHeader(s severity.Severity, file string, line int, now
 
 	// Avoid Fprintf, for speed. The format is so simple that we can do it quickly by hand.
 	// It's worth about 3X. Fprintf is hard.
+	if Time != nil {
+		now = *Time
+	}
 	_, month, day := now.Date()
 	hour, minute, second := now.Clock()
 	// Lmmdd hh:mm:ss.uuuuuu threadid file:line]
@@ -157,6 +162,9 @@ func (buf *Buffer) SprintHeader(s severity.Severity, now time.Time) string {
 
 	// Avoid Fprintf, for speed. The format is so simple that we can do it quickly by hand.
 	// It's worth about 3X. Fprintf is hard.
+	if Time != nil {
+		now = *Time
+	}
 	_, month, day := now.Date()
 	hour, minute, second := now.Clock()
 	// Lmmdd hh:mm:ss.uuuuuu threadid file:line]

vendor/k8s.io/klog/v2/internal/clock/clock.go

@@ -39,16 +39,6 @@ type Clock interface {
 	// Sleep sleeps for the provided duration d.
 	// Consider making the sleep interruptible by using 'select' on a context channel and a timer channel.
 	Sleep(d time.Duration)
-	// Tick returns the channel of a new Ticker.
-	// This method does not allow to free/GC the backing ticker. Use
-	// NewTicker from WithTicker instead.
-	Tick(d time.Duration) <-chan time.Time
-}
-
-// WithTicker allows for injecting fake or real clocks into code that
-// needs to do arbitrary things based on time.
-type WithTicker interface {
-	Clock
 	// NewTicker returns a new Ticker.
 	NewTicker(time.Duration) Ticker
 }
@@ -66,7 +56,7 @@ type WithDelayedExecution interface {
 // WithTickerAndDelayedExecution allows for injecting fake or real clocks
 // into code that needs Ticker and AfterFunc functionality
 type WithTickerAndDelayedExecution interface {
-	WithTicker
+	Clock
 	// AfterFunc executes f in its own goroutine after waiting
 	// for d duration and returns a Timer whose channel can be
 	// closed by calling Stop() on the Timer.
@@ -79,7 +69,7 @@ type Ticker interface {
 	Stop()
 }
 
-var _ = WithTicker(RealClock{})
+var _ Clock = RealClock{}
 
 // RealClock really calls time.Now()
 type RealClock struct{}
@@ -115,13 +105,6 @@ func (RealClock) AfterFunc(d time.Duration, f func()) Timer {
 	}
 }
 
-// Tick is the same as time.Tick(d)
-// This method does not allow to free/GC the backing ticker. Use
-// NewTicker instead.
-func (RealClock) Tick(d time.Duration) <-chan time.Time {
-	return time.Tick(d)
-}
-
 // NewTicker returns a new Ticker.
 func (RealClock) NewTicker(d time.Duration) Ticker {
 	return &realTicker{

vendor/k8s.io/klog/v2/internal/serialize/keyvalues.go

@@ -172,73 +172,6 @@ func KVListFormat(b *bytes.Buffer, keysAndValues ...interface{}) {
 	Formatter{}.KVListFormat(b, keysAndValues...)
 }
 
-// KVFormat serializes one key/value pair into the provided buffer.
-// A space gets inserted before the pair.
-func (f Formatter) KVFormat(b *bytes.Buffer, k, v interface{}) {
-	b.WriteByte(' ')
-	// Keys are assumed to be well-formed according to
-	// https://github.com/kubernetes/community/blob/master/contributors/devel/sig-instrumentation/migration-to-structured-logging.md#name-arguments
-	// for the sake of performance. Keys with spaces,
-	// special characters, etc. will break parsing.
-	if sK, ok := k.(string); ok {
-		// Avoid one allocation when the key is a string, which
-		// normally it should be.
-		b.WriteString(sK)
-	} else {
-		b.WriteString(fmt.Sprintf("%s", k))
-	}
-
-	// The type checks are sorted so that more frequently used ones
-	// come first because that is then faster in the common
-	// cases. In Kubernetes, ObjectRef (a Stringer) is more common
-	// than plain strings
-	// (https://github.com/kubernetes/kubernetes/pull/106594#issuecomment-975526235).
-	switch v := v.(type) {
-	case textWriter:
-		writeTextWriterValue(b, v)
-	case fmt.Stringer:
-		writeStringValue(b, StringerToString(v))
-	case string:
-		writeStringValue(b, v)
-	case error:
-		writeStringValue(b, ErrorToString(v))
-	case logr.Marshaler:
-		value := MarshalerToValue(v)
-		// A marshaler that returns a string is useful for
-		// delayed formatting of complex values. We treat this
-		// case like a normal string. This is useful for
-		// multi-line support.
-		//
-		// We could do this by recursively formatting a value,
-		// but that comes with the risk of infinite recursion
-		// if a marshaler returns itself. Instead we call it
-		// only once and rely on it returning the intended
-		// value directly.
-		switch value := value.(type) {
-		case string:
-			writeStringValue(b, value)
-		default:
-			f.formatAny(b, value)
-		}
-	case []byte:
-		// In https://github.com/kubernetes/klog/pull/237 it was decided
-		// to format byte slices with "%+q". The advantages of that are:
-		// - readable output if the bytes happen to be printable
-		// - non-printable bytes get represented as unicode escape
-		//   sequences (\uxxxx)
-		//
-		// The downsides are that we cannot use the faster
-		// strconv.Quote here and that multi-line output is not
-		// supported. If developers know that a byte array is
-		// printable and they want multi-line output, they can
-		// convert the value to string before logging it.
-		b.WriteByte('=')
-		b.WriteString(fmt.Sprintf("%+q", v))
-	default:
-		f.formatAny(b, v)
-	}
-}
-
 func KVFormat(b *bytes.Buffer, k, v interface{}) {
 	Formatter{}.KVFormat(b, k, v)
 }
@@ -251,6 +184,10 @@ func (f Formatter) formatAny(b *bytes.Buffer, v interface{}) {
 		b.WriteString(f.AnyToStringHook(v))
 		return
 	}
+	formatAsJSON(b, v)
+}
+
+func formatAsJSON(b *bytes.Buffer, v interface{}) {
 	encoder := json.NewEncoder(b)
 	l := b.Len()
 	if err := encoder.Encode(v); err != nil {

vendor/k8s.io/klog/v2/internal/serialize/keyvalues_no_slog.go

@@ -0,0 +1,97 @@
+//go:build !go1.21
+// +build !go1.21
+
+/*
+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 serialize
+
+import (
+	"bytes"
+	"fmt"
+
+	"github.com/go-logr/logr"
+)
+
+// KVFormat serializes one key/value pair into the provided buffer.
+// A space gets inserted before the pair.
+func (f Formatter) KVFormat(b *bytes.Buffer, k, v interface{}) {
+	// This is the version without slog support. Must be kept in sync with
+	// the version in keyvalues_slog.go.
+
+	b.WriteByte(' ')
+	// Keys are assumed to be well-formed according to
+	// https://github.com/kubernetes/community/blob/master/contributors/devel/sig-instrumentation/migration-to-structured-logging.md#name-arguments
+	// for the sake of performance. Keys with spaces,
+	// special characters, etc. will break parsing.
+	if sK, ok := k.(string); ok {
+		// Avoid one allocation when the key is a string, which
+		// normally it should be.
+		b.WriteString(sK)
+	} else {
+		b.WriteString(fmt.Sprintf("%s", k))
+	}
+
+	// The type checks are sorted so that more frequently used ones
+	// come first because that is then faster in the common
+	// cases. In Kubernetes, ObjectRef (a Stringer) is more common
+	// than plain strings
+	// (https://github.com/kubernetes/kubernetes/pull/106594#issuecomment-975526235).
+	switch v := v.(type) {
+	case textWriter:
+		writeTextWriterValue(b, v)
+	case fmt.Stringer:
+		writeStringValue(b, StringerToString(v))
+	case string:
+		writeStringValue(b, v)
+	case error:
+		writeStringValue(b, ErrorToString(v))
+	case logr.Marshaler:
+		value := MarshalerToValue(v)
+		// A marshaler that returns a string is useful for
+		// delayed formatting of complex values. We treat this
+		// case like a normal string. This is useful for
+		// multi-line support.
+		//
+		// We could do this by recursively formatting a value,
+		// but that comes with the risk of infinite recursion
+		// if a marshaler returns itself. Instead we call it
+		// only once and rely on it returning the intended
+		// value directly.
+		switch value := value.(type) {
+		case string:
+			writeStringValue(b, value)
+		default:
+			f.formatAny(b, value)
+		}
+	case []byte:
+		// In https://github.com/kubernetes/klog/pull/237 it was decided
+		// to format byte slices with "%+q". The advantages of that are:
+		// - readable output if the bytes happen to be printable
+		// - non-printable bytes get represented as unicode escape
+		//   sequences (\uxxxx)
+		//
+		// The downsides are that we cannot use the faster
+		// strconv.Quote here and that multi-line output is not
+		// supported. If developers know that a byte array is
+		// printable and they want multi-line output, they can
+		// convert the value to string before logging it.
+		b.WriteByte('=')
+		b.WriteString(fmt.Sprintf("%+q", v))
+	default:
+		f.formatAny(b, v)
+	}
+}

vendor/k8s.io/klog/v2/internal/serialize/keyvalues_slog.go

@@ -0,0 +1,155 @@
+//go:build go1.21
+// +build go1.21
+
+/*
+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 serialize
+
+import (
+	"bytes"
+	"fmt"
+	"log/slog"
+	"strconv"
+
+	"github.com/go-logr/logr"
+)
+
+// KVFormat serializes one key/value pair into the provided buffer.
+// A space gets inserted before the pair.
+func (f Formatter) KVFormat(b *bytes.Buffer, k, v interface{}) {
+	// This is the version without slog support. Must be kept in sync with
+	// the version in keyvalues_slog.go.
+
+	b.WriteByte(' ')
+	// Keys are assumed to be well-formed according to
+	// https://github.com/kubernetes/community/blob/master/contributors/devel/sig-instrumentation/migration-to-structured-logging.md#name-arguments
+	// for the sake of performance. Keys with spaces,
+	// special characters, etc. will break parsing.
+	if sK, ok := k.(string); ok {
+		// Avoid one allocation when the key is a string, which
+		// normally it should be.
+		b.WriteString(sK)
+	} else {
+		b.WriteString(fmt.Sprintf("%s", k))
+	}
+
+	// The type checks are sorted so that more frequently used ones
+	// come first because that is then faster in the common
+	// cases. In Kubernetes, ObjectRef (a Stringer) is more common
+	// than plain strings
+	// (https://github.com/kubernetes/kubernetes/pull/106594#issuecomment-975526235).
+	//
+	// slog.LogValuer does not need to be handled here because the handler will
+	// already have resolved such special values to the final value for logging.
+	switch v := v.(type) {
+	case textWriter:
+		writeTextWriterValue(b, v)
+	case slog.Value:
+		// This must come before fmt.Stringer because slog.Value implements
+		// fmt.Stringer, but does not produce the output that we want.
+		b.WriteByte('=')
+		generateJSON(b, v)
+	case fmt.Stringer:
+		writeStringValue(b, StringerToString(v))
+	case string:
+		writeStringValue(b, v)
+	case error:
+		writeStringValue(b, ErrorToString(v))
+	case logr.Marshaler:
+		value := MarshalerToValue(v)
+		// A marshaler that returns a string is useful for
+		// delayed formatting of complex values. We treat this
+		// case like a normal string. This is useful for
+		// multi-line support.
+		//
+		// We could do this by recursively formatting a value,
+		// but that comes with the risk of infinite recursion
+		// if a marshaler returns itself. Instead we call it
+		// only once and rely on it returning the intended
+		// value directly.
+		switch value := value.(type) {
+		case string:
+			writeStringValue(b, value)
+		default:
+			f.formatAny(b, value)
+		}
+	case slog.LogValuer:
+		value := slog.AnyValue(v).Resolve()
+		if value.Kind() == slog.KindString {
+			writeStringValue(b, value.String())
+		} else {
+			b.WriteByte('=')
+			generateJSON(b, value)
+		}
+	case []byte:
+		// In https://github.com/kubernetes/klog/pull/237 it was decided
+		// to format byte slices with "%+q". The advantages of that are:
+		// - readable output if the bytes happen to be printable
+		// - non-printable bytes get represented as unicode escape
+		//   sequences (\uxxxx)
+		//
+		// The downsides are that we cannot use the faster
+		// strconv.Quote here and that multi-line output is not
+		// supported. If developers know that a byte array is
+		// printable and they want multi-line output, they can
+		// convert the value to string before logging it.
+		b.WriteByte('=')
+		b.WriteString(fmt.Sprintf("%+q", v))
+	default:
+		f.formatAny(b, v)
+	}
+}
+
+// generateJSON has the same preference for plain strings as KVFormat.
+// In contrast to KVFormat it always produces valid JSON with no line breaks.
+func generateJSON(b *bytes.Buffer, v interface{}) {
+	switch v := v.(type) {
+	case slog.Value:
+		switch v.Kind() {
+		case slog.KindGroup:
+			// Format as a JSON group. We must not involve f.AnyToStringHook (if there is any),
+			// because there is no guarantee that it produces valid JSON.
+			b.WriteByte('{')
+			for i, attr := range v.Group() {
+				if i > 0 {
+					b.WriteByte(',')
+				}
+				b.WriteString(strconv.Quote(attr.Key))
+				b.WriteByte(':')
+				generateJSON(b, attr.Value)
+			}
+			b.WriteByte('}')
+		case slog.KindLogValuer:
+			generateJSON(b, v.Resolve())
+		default:
+			// Peel off the slog.Value wrapper and format the actual value.
+			generateJSON(b, v.Any())
+		}
+	case fmt.Stringer:
+		b.WriteString(strconv.Quote(StringerToString(v)))
+	case logr.Marshaler:
+		generateJSON(b, MarshalerToValue(v))
+	case slog.LogValuer:
+		generateJSON(b, slog.AnyValue(v).Resolve().Any())
+	case string:
+		b.WriteString(strconv.Quote(v))
+	case error:
+		b.WriteString(strconv.Quote(v.Error()))
+	default:
+		formatAsJSON(b, v)
+	}
+}

vendor/k8s.io/klog/v2/internal/sloghandler/sloghandler_slog.go

@@ -0,0 +1,96 @@
+//go:build go1.21
+// +build go1.21
+
+/*
+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 sloghandler
+
+import (
+	"context"
+	"log/slog"
+	"runtime"
+	"strings"
+	"time"
+
+	"k8s.io/klog/v2/internal/severity"
+)
+
+func Handle(_ context.Context, record slog.Record, groups string, printWithInfos func(file string, line int, now time.Time, err error, s severity.Severity, msg string, kvList []interface{})) error {
+	now := record.Time
+	if now.IsZero() {
+		// This format doesn't support printing entries without a time.
+		now = time.Now()
+	}
+
+	// slog has numeric severity levels, with 0 as default "info", negative for debugging, and
+	// positive with some pre-defined levels for more important. Those ranges get mapped to
+	// the corresponding klog levels where possible, with "info" the default that is used
+	// also for negative debug levels.
+	level := record.Level
+	s := severity.InfoLog
+	switch {
+	case level >= slog.LevelError:
+		s = severity.ErrorLog
+	case level >= slog.LevelWarn:
+		s = severity.WarningLog
+	}
+
+	var file string
+	var line int
+	if record.PC != 0 {
+		// Same as https://cs.opensource.google/go/x/exp/+/642cacee:slog/record.go;drc=642cacee5cc05231f45555a333d07f1005ffc287;l=70
+		fs := runtime.CallersFrames([]uintptr{record.PC})
+		f, _ := fs.Next()
+		if f.File != "" {
+			file = f.File
+			if slash := strings.LastIndex(file, "/"); slash >= 0 {
+				file = file[slash+1:]
+			}
+			line = f.Line
+		}
+	} else {
+		file = "???"
+		line = 1
+	}
+
+	kvList := make([]interface{}, 0, 2*record.NumAttrs())
+	record.Attrs(func(attr slog.Attr) bool {
+		kvList = appendAttr(groups, kvList, attr)
+		return true
+	})
+
+	printWithInfos(file, line, now, nil, s, record.Message, kvList)
+	return nil
+}
+
+func Attrs2KVList(groups string, attrs []slog.Attr) []interface{} {
+	kvList := make([]interface{}, 0, 2*len(attrs))
+	for _, attr := range attrs {
+		kvList = appendAttr(groups, kvList, attr)
+	}
+	return kvList
+}
+
+func appendAttr(groups string, kvList []interface{}, attr slog.Attr) []interface{} {
+	var key string
+	if groups != "" {
+		key = groups + "." + attr.Key
+	} else {
+		key = attr.Key
+	}
+	return append(kvList, key, attr.Value)
+}

vendor/k8s.io/klog/v2/k8s_references_slog.go

@@ -0,0 +1,39 @@
+//go:build go1.21
+// +build go1.21
+
+/*
+Copyright 2021 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 klog
+
+import (
+	"log/slog"
+)
+
+func (ref ObjectRef) LogValue() slog.Value {
+	if ref.Namespace != "" {
+		return slog.GroupValue(slog.String("name", ref.Name), slog.String("namespace", ref.Namespace))
+	}
+	return slog.GroupValue(slog.String("name", ref.Name))
+}
+
+var _ slog.LogValuer = ObjectRef{}
+
+func (ks kobjSlice) LogValue() slog.Value {
+	return slog.AnyValue(ks.MarshalLog())
+}
+
+var _ slog.LogValuer = kobjSlice{}

vendor/k8s.io/klog/v2/klog.go

@@ -415,7 +415,7 @@ func init() {
 	logging.stderrThreshold = severityValue{
 		Severity: severity.ErrorLog, // Default stderrThreshold is ERROR.
 	}
-	commandLine.Var(&logging.stderrThreshold, "stderrthreshold", "logs at or above this threshold go to stderr when writing to files and stderr (no effect when -logtostderr=true or -alsologtostderr=false)")
+	commandLine.Var(&logging.stderrThreshold, "stderrthreshold", "logs at or above this threshold go to stderr when writing to files and stderr (no effect when -logtostderr=true or -alsologtostderr=true)")
 	commandLine.Var(&logging.vmodule, "vmodule", "comma-separated list of pattern=N settings for file-filtered logging")
 	commandLine.Var(&logging.traceLocation, "log_backtrace_at", "when logging hits line file:N, emit a stack trace")
 
@@ -518,9 +518,7 @@ type settings struct {
 func (s settings) deepCopy() settings {
 	// vmodule is a slice and would be shared, so we have copy it.
 	filter := make([]modulePat, len(s.vmodule.filter))
-	for i := range s.vmodule.filter {
+	copy(filter, s.vmodule.filter)
-		filter[i] = s.vmodule.filter[i]
-	}
 	s.vmodule.filter = filter
 
 	if s.logger != nil {
@@ -657,16 +655,15 @@ func (l *loggingT) header(s severity.Severity, depth int) (*buffer.Buffer, strin
 			}
 		}
 	}
-	return l.formatHeader(s, file, line), file, line
+	return l.formatHeader(s, file, line, timeNow()), file, line
 }
 
 // formatHeader formats a log header using the provided file name and line number.
-func (l *loggingT) formatHeader(s severity.Severity, file string, line int) *buffer.Buffer {
+func (l *loggingT) formatHeader(s severity.Severity, file string, line int, now time.Time) *buffer.Buffer {
 	buf := buffer.GetBuffer()
 	if l.skipHeaders {
 		return buf
 	}
-	now := timeNow()
 	buf.FormatHeader(s, file, line, now)
 	return buf
 }
@@ -676,6 +673,10 @@ func (l *loggingT) println(s severity.Severity, logger *logWriter, filter LogFil
 }
 
 func (l *loggingT) printlnDepth(s severity.Severity, logger *logWriter, filter LogFilter, depth int, args ...interface{}) {
+	if false {
+		_ = fmt.Sprintln(args...) // cause vet to treat this function like fmt.Println
+	}
+
 	buf, file, line := l.header(s, depth)
 	// If a logger is set and doesn't support writing a formatted buffer,
 	// we clear the generated header as we rely on the backing
@@ -696,7 +697,15 @@ func (l *loggingT) print(s severity.Severity, logger *logWriter, filter LogFilte
 }
 
 func (l *loggingT) printDepth(s severity.Severity, logger *logWriter, filter LogFilter, depth int, args ...interface{}) {
+	if false {
+		_ = fmt.Sprint(args...) //  // cause vet to treat this function like fmt.Print
+	}
+
 	buf, file, line := l.header(s, depth)
+	l.printWithInfos(buf, file, line, s, logger, filter, depth+1, args...)
+}
+
+func (l *loggingT) printWithInfos(buf *buffer.Buffer, file string, line int, s severity.Severity, logger *logWriter, filter LogFilter, depth int, args ...interface{}) {
 	// If a logger is set and doesn't support writing a formatted buffer,
 	// we clear the generated header as we rely on the backing
 	// logger implementation to print headers.
@@ -719,6 +728,10 @@ func (l *loggingT) printf(s severity.Severity, logger *logWriter, filter LogFilt
 }
 
 func (l *loggingT) printfDepth(s severity.Severity, logger *logWriter, filter LogFilter, depth int, format string, args ...interface{}) {
+	if false {
+		_ = fmt.Sprintf(format, args...) // cause vet to treat this function like fmt.Printf
+	}
+
 	buf, file, line := l.header(s, depth)
 	// If a logger is set and doesn't support writing a formatted buffer,
 	// we clear the generated header as we rely on the backing
@@ -741,7 +754,7 @@ func (l *loggingT) printfDepth(s severity.Severity, logger *logWriter, filter Lo
 // alsoLogToStderr is true, the log message always appears on standard error; it
 // will also appear in the log file unless --logtostderr is set.
 func (l *loggingT) printWithFileLine(s severity.Severity, logger *logWriter, filter LogFilter, file string, line int, alsoToStderr bool, args ...interface{}) {
-	buf := l.formatHeader(s, file, line)
+	buf := l.formatHeader(s, file, line, timeNow())
 	// If a logger is set and doesn't support writing a formatted buffer,
 	// we clear the generated header as we rely on the backing
 	// logger implementation to print headers.
@@ -759,7 +772,7 @@ func (l *loggingT) printWithFileLine(s severity.Severity, logger *logWriter, fil
 	l.output(s, logger, buf, 2 /* depth */, file, line, alsoToStderr)
 }
 
-// if loggr is specified, will call loggr.Error, otherwise output with logging module.
+// if logger is specified, will call logger.Error, otherwise output with logging module.
 func (l *loggingT) errorS(err error, logger *logWriter, filter LogFilter, depth int, msg string, keysAndValues ...interface{}) {
 	if filter != nil {
 		msg, keysAndValues = filter.FilterS(msg, keysAndValues)
@@ -771,7 +784,7 @@ func (l *loggingT) errorS(err error, logger *logWriter, filter LogFilter, depth
 	l.printS(err, severity.ErrorLog, depth+1, msg, keysAndValues...)
 }
 
-// if loggr is specified, will call loggr.Info, otherwise output with logging module.
+// if logger is specified, will call logger.Info, otherwise output with logging module.
 func (l *loggingT) infoS(logger *logWriter, filter LogFilter, depth int, msg string, keysAndValues ...interface{}) {
 	if filter != nil {
 		msg, keysAndValues = filter.FilterS(msg, keysAndValues)
@@ -783,7 +796,7 @@ func (l *loggingT) infoS(logger *logWriter, filter LogFilter, depth int, msg str
 	l.printS(nil, severity.InfoLog, depth+1, msg, keysAndValues...)
 }
 
-// printS is called from infoS and errorS if loggr is not specified.
+// printS is called from infoS and errorS if logger is not specified.
 // set log severity by s
 func (l *loggingT) printS(err error, s severity.Severity, depth int, msg string, keysAndValues ...interface{}) {
 	// Only create a new buffer if we don't have one cached.
@@ -796,7 +809,7 @@ func (l *loggingT) printS(err error, s severity.Severity, depth int, msg string,
 		serialize.KVListFormat(&b.Buffer, "err", err)
 	}
 	serialize.KVListFormat(&b.Buffer, keysAndValues...)
-	l.printDepth(s, logging.logger, nil, depth+1, &b.Buffer)
+	l.printDepth(s, nil, nil, depth+1, &b.Buffer)
 	// Make the buffer available for reuse.
 	buffer.PutBuffer(b)
 }
@@ -873,6 +886,9 @@ func (l *loggingT) output(s severity.Severity, logger *logWriter, buf *buffer.Bu
 		if logger.writeKlogBuffer != nil {
 			logger.writeKlogBuffer(data)
 		} else {
+			if len(data) > 0 && data[len(data)-1] == '\n' {
+				data = data[:len(data)-1]
+			}
 			// TODO: set 'severity' and caller information as structured log info
 			// keysAndValues := []interface{}{"severity", severityName[s], "file", file, "line", line}
 			if s == severity.ErrorLog {
@@ -897,7 +913,7 @@ func (l *loggingT) output(s severity.Severity, logger *logWriter, buf *buffer.Bu
 					l.exit(err)
 				}
 			}
-			l.file[severity.InfoLog].Write(data)
+			_, _ = l.file[severity.InfoLog].Write(data)
 		} else {
 			if l.file[s] == nil {
 				if err := l.createFiles(s); err != nil {
@@ -907,20 +923,20 @@ func (l *loggingT) output(s severity.Severity, logger *logWriter, buf *buffer.Bu
 			}
 
 			if l.oneOutput {
-				l.file[s].Write(data)
+				_, _ = l.file[s].Write(data)
 			} else {
 				switch s {
 				case severity.FatalLog:
-					l.file[severity.FatalLog].Write(data)
+					_, _ = l.file[severity.FatalLog].Write(data)
 					fallthrough
 				case severity.ErrorLog:
-					l.file[severity.ErrorLog].Write(data)
+					_, _ = l.file[severity.ErrorLog].Write(data)
 					fallthrough
 				case severity.WarningLog:
-					l.file[severity.WarningLog].Write(data)
+					_, _ = l.file[severity.WarningLog].Write(data)
 					fallthrough
 				case severity.InfoLog:
-					l.file[severity.InfoLog].Write(data)
+					_, _ = l.file[severity.InfoLog].Write(data)
 				}
 			}
 		}
@@ -946,7 +962,7 @@ func (l *loggingT) output(s severity.Severity, logger *logWriter, buf *buffer.Bu
 		logExitFunc = func(error) {} // If we get a write error, we'll still exit below.
 		for log := severity.FatalLog; log >= severity.InfoLog; log-- {
 			if f := l.file[log]; f != nil { // Can be nil if -logtostderr is set.
-				f.Write(trace)
+				_, _ = f.Write(trace)
 			}
 		}
 		l.mu.Unlock()
@@ -1102,7 +1118,7 @@ const flushInterval = 5 * time.Second
 // flushDaemon periodically flushes the log file buffers.
 type flushDaemon struct {
 	mu       sync.Mutex
-	clock    clock.WithTicker
+	clock    clock.Clock
 	flush    func()
 	stopC    chan struct{}
 	stopDone chan struct{}
@@ -1110,7 +1126,7 @@ type flushDaemon struct {
 
 // newFlushDaemon returns a new flushDaemon. If the passed clock is nil, a
 // clock.RealClock is used.
-func newFlushDaemon(flush func(), tickClock clock.WithTicker) *flushDaemon {
+func newFlushDaemon(flush func(), tickClock clock.Clock) *flushDaemon {
 	if tickClock == nil {
 		tickClock = clock.RealClock{}
 	}
@@ -1201,8 +1217,8 @@ func (l *loggingT) flushAll() {
 	for s := severity.FatalLog; s >= severity.InfoLog; s-- {
 		file := l.file[s]
 		if file != nil {
-			file.Flush() // ignore error
+			_ = file.Flush() // ignore error
-			file.Sync()  // ignore error
+			_ = file.Sync()  // ignore error
 		}
 	}
 	if logging.loggerOptions.flush != nil {
@@ -1281,9 +1297,7 @@ func (l *loggingT) setV(pc uintptr) Level {
 	fn := runtime.FuncForPC(pc)
 	file, _ := fn.FileLine(pc)
 	// The file is something like /a/b/c/d.go. We want just the d.
-	if strings.HasSuffix(file, ".go") {
+	file = strings.TrimSuffix(file, ".go")
-		file = file[:len(file)-3]
-	}
 	if slash := strings.LastIndex(file, "/"); slash >= 0 {
 		file = file[slash+1:]
 	}

vendor/k8s.io/klog/v2/klog_file.go

@@ -109,8 +109,8 @@ func create(tag string, t time.Time, startup bool) (f *os.File, filename string,
 		f, err := openOrCreate(fname, startup)
 		if err == nil {
 			symlink := filepath.Join(dir, link)
-			os.Remove(symlink)        // ignore err
+			_ = os.Remove(symlink)        // ignore err
-			os.Symlink(name, symlink) // ignore err
+			_ = os.Symlink(name, symlink) // ignore err
 			return f, fname, nil
 		}
 		lastErr = err

vendor/k8s.io/klog/v2/klogr.go

@@ -22,6 +22,11 @@ import (
 	"k8s.io/klog/v2/internal/serialize"
 )
 
+const (
+	// nameKey is used to log the `WithName` values as an additional attribute.
+	nameKey = "logger"
+)
+
 // NewKlogr returns a logger that is functionally identical to
 // klogr.NewWithOptions(klogr.FormatKlog), i.e. it passes through to klog. The
 // difference is that it uses a simpler implementation.
@@ -32,10 +37,15 @@ func NewKlogr() Logger {
 // klogger is a subset of klogr/klogr.go. It had to be copied to break an
 // import cycle (klogr wants to use klog, and klog wants to use klogr).
 type klogger struct {
-	level     int
 	callDepth int
-	prefix    string
+
-	values    []interface{}
+	// hasPrefix is true if the first entry in values is the special
+	// nameKey key/value. Such an entry gets added and later updated in
+	// WithName.
+	hasPrefix bool
+
+	values []interface{}
+	groups string
 }
 
 func (l *klogger) Init(info logr.RuntimeInfo) {
@@ -44,34 +54,40 @@ func (l *klogger) Init(info logr.RuntimeInfo) {
 
 func (l *klogger) Info(level int, msg string, kvList ...interface{}) {
 	merged := serialize.MergeKVs(l.values, kvList)
-	if l.prefix != "" {
-		msg = l.prefix + ": " + msg
-	}
 	// Skip this function.
 	VDepth(l.callDepth+1, Level(level)).InfoSDepth(l.callDepth+1, msg, merged...)
 }
 
 func (l *klogger) Enabled(level int) bool {
-	// Skip this function and logr.Logger.Info where Enabled is called.
+	return VDepth(l.callDepth+1, Level(level)).Enabled()
-	return VDepth(l.callDepth+2, Level(level)).Enabled()
 }
 
 func (l *klogger) Error(err error, msg string, kvList ...interface{}) {
 	merged := serialize.MergeKVs(l.values, kvList)
-	if l.prefix != "" {
-		msg = l.prefix + ": " + msg
-	}
 	ErrorSDepth(l.callDepth+1, err, msg, merged...)
 }
 
 // WithName returns a new logr.Logger with the specified name appended.  klogr
-// uses '/' characters to separate name elements.  Callers should not pass '/'
+// uses '.' characters to separate name elements.  Callers should not pass '.'
 // in the provided name string, but this library does not actually enforce that.
 func (l klogger) WithName(name string) logr.LogSink {
-	if len(l.prefix) > 0 {
+	if l.hasPrefix {
-		l.prefix = l.prefix + "/"
+		// Copy slice and modify value. No length checks and type
+		// assertions are needed because hasPrefix is only true if the
+		// first two elements exist and are key/value strings.
+		v := make([]interface{}, 0, len(l.values))
+		v = append(v, l.values...)
+		prefix, _ := v[1].(string)
+		v[1] = prefix + "." + name
+		l.values = v
+	} else {
+		// Preprend new key/value pair.
+		v := make([]interface{}, 0, 2+len(l.values))
+		v = append(v, nameKey, name)
+		v = append(v, l.values...)
+		l.values = v
+		l.hasPrefix = true
 	}
-	l.prefix += name
 	return &l
 }
 

vendor/k8s.io/klog/v2/klogr_slog.go

@@ -0,0 +1,96 @@
+//go:build go1.21
+// +build go1.21
+
+/*
+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 klog
+
+import (
+	"context"
+	"log/slog"
+	"strconv"
+	"time"
+
+	"github.com/go-logr/logr/slogr"
+
+	"k8s.io/klog/v2/internal/buffer"
+	"k8s.io/klog/v2/internal/serialize"
+	"k8s.io/klog/v2/internal/severity"
+	"k8s.io/klog/v2/internal/sloghandler"
+)
+
+func (l *klogger) Handle(ctx context.Context, record slog.Record) error {
+	if logging.logger != nil {
+		if slogSink, ok := logging.logger.GetSink().(slogr.SlogSink); ok {
+			// Let that logger do the work.
+			return slogSink.Handle(ctx, record)
+		}
+	}
+
+	return sloghandler.Handle(ctx, record, l.groups, slogOutput)
+}
+
+// slogOutput corresponds to several different functions in klog.go.
+// It goes through some of the same checks and formatting steps before
+// it ultimately converges by calling logging.printWithInfos.
+func slogOutput(file string, line int, now time.Time, err error, s severity.Severity, msg string, kvList []interface{}) {
+	// See infoS.
+	if logging.logger != nil {
+		// Taking this path happens when klog has a logger installed
+		// as backend which doesn't support slog. Not good, we have to
+		// guess about the call depth and drop the actual location.
+		logger := logging.logger.WithCallDepth(2)
+		if s > severity.ErrorLog {
+			logger.Error(err, msg, kvList...)
+		} else {
+			logger.Info(msg, kvList...)
+		}
+		return
+	}
+
+	// See printS.
+	b := buffer.GetBuffer()
+	b.WriteString(strconv.Quote(msg))
+	if err != nil {
+		serialize.KVListFormat(&b.Buffer, "err", err)
+	}
+	serialize.KVListFormat(&b.Buffer, kvList...)
+
+	// See print + header.
+	buf := logging.formatHeader(s, file, line, now)
+	logging.printWithInfos(buf, file, line, s, nil, nil, 0, &b.Buffer)
+
+	buffer.PutBuffer(b)
+}
+
+func (l *klogger) WithAttrs(attrs []slog.Attr) slogr.SlogSink {
+	clone := *l
+	clone.values = serialize.WithValues(l.values, sloghandler.Attrs2KVList(l.groups, attrs))
+	return &clone
+}
+
+func (l *klogger) WithGroup(name string) slogr.SlogSink {
+	clone := *l
+	if clone.groups != "" {
+		clone.groups += "." + name
+	} else {
+		clone.groups = name
+	}
+	return &clone
+}
+
+var _ slogr.SlogSink = &klogger{}

vendor/modules.txt

@@ -211,10 +211,11 @@ github.com/go-jose/go-jose/v3
 github.com/go-jose/go-jose/v3/cipher
 github.com/go-jose/go-jose/v3/json
 github.com/go-jose/go-jose/v3/jwt
-# github.com/go-logr/logr v1.2.4
+# github.com/go-logr/logr v1.3.0
-## explicit; go 1.16
+## explicit; go 1.18
 github.com/go-logr/logr
 github.com/go-logr/logr/funcr
+github.com/go-logr/logr/slogr
 # github.com/go-logr/stdr v1.2.2
 ## explicit; go 1.16
 github.com/go-logr/stdr
@@ -1442,7 +1443,7 @@ k8s.io/controller-manager/pkg/features
 k8s.io/controller-manager/pkg/features/register
 k8s.io/controller-manager/pkg/leadermigration/config
 k8s.io/controller-manager/pkg/leadermigration/options
-# k8s.io/klog/v2 v2.100.1
+# k8s.io/klog/v2 v2.110.1
 ## explicit; go 1.13
 k8s.io/klog/v2
 k8s.io/klog/v2/internal/buffer
@@ -1450,6 +1451,7 @@ k8s.io/klog/v2/internal/clock
 k8s.io/klog/v2/internal/dbg
 k8s.io/klog/v2/internal/serialize
 k8s.io/klog/v2/internal/severity
+k8s.io/klog/v2/internal/sloghandler
 # k8s.io/kms v0.28.3
 ## explicit; go 1.20
 k8s.io/kms/apis/v1beta1