Upgrade Operator SDK to v1.34.1 and update dependencies (#185)

This does the following updates:

* Upgrade to Operator SDK v1.34.1. This fixes building multi-arch images from Makefile. Check this MR from operator-framework for details.
* Update Go dependencies. This addresses Dependabot alert ["Golang protojson.Unmarshal function infinite loop when unmarshaling certain forms of invalid JSON"](https://github.com/1Password/onepassword-operator/security/dependabot/13).
* Update versions of the GitHub Actions used in the pipelines.
* Update Kubernetes related tools (such as controller-tools version, and operator-sdk for ci pipelines)

By updating dependencies, the pipelines no longer fail due to a panic error when running `make test`.

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

@@ -91,11 +91,12 @@ logr design but also left out some parts and changed others:
 | 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` |
+| Pass context for extracting additional values | no API | API variants like `InfoCtx` |
 
 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.
+alternative API, with [interoperability](#slog-interoperability) provided by
+some conversion functions.
 
 ### Inspiration
 
@@ -145,24 +146,24 @@ There are implementations for the following logging libraries:
 ## 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`.
+and using the `slog.Logger` API with a `logr.LogSink`. `FromSlogHandler` and
+`ToSlogHandler` 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.
+slog API.
 
-## Using a `logr.Sink` as backend for slog
+### Using a `logr.LogSink` 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
+implementing both the normal logr interface(s) and `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
+without the need to convert parameters. `FromSlogHandler` and `ToSlogHandler` 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
+`ToSlogHandler` has to use a wrapper which adjusts the verbosity for future
 log calls.
 
 Such an implementation should also support values that implement specific
@@ -187,13 +188,13 @@ Not supporting slog has several drawbacks:
 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 `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
+- Stack unwinding is done by the `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.
@@ -205,27 +206,39 @@ 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
+### 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:
+slog. `NewContextWithSlogLogger` and `FromContextAsSlogLogger` can be
+used to fill this gap. They store and retrieve a `slog.Logger` pointer
+under the same context key that is also used by `NewContext` and
+`FromContext` for `logr.Logger` value.
 
-    func HandlerFromContext(ctx context.Context) slog.Handler {
-        logger, err := logr.FromContext(ctx)
-        if err == nil {
-            return slogr.NewSlogHandler(logger)
-        }
-        return slog.Default().Handler()
-    }
+When `NewContextWithSlogLogger` is followed by `FromContext`, the latter will
+automatically convert the `slog.Logger` to a
+`logr.Logger`. `FromContextAsSlogLogger` does the same for the other direction.
 
-    func ContextWithHandler(ctx context.Context, handler slog.Handler) context.Context {
-        return logr.NewContext(ctx, slogr.NewLogr(handler))
-    }
+With this approach, binaries which use either slog or logr are as efficient as
+possible with no unnecessary allocations. This is also why the API stores a
+`slog.Logger` pointer: when storing a `slog.Handler`, creating a `slog.Logger`
+on retrieval would need to allocate one.
 
-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.
+The downside is that switching back and forth needs more allocations. Because
+logr is the API that is already in use by different packages, in particular
+Kubernetes, the recommendation is to use the `logr.Logger` API in code which
+uses contextual logging.
+
+An alternative to adding values to a logger and storing that logger in the
+context is to store the values in the context and to configure a logging
+backend to extract those values when emitting log entries. This only works when
+log calls are passed the context, which is not supported by the logr API.
+
+With the slog API, it is possible, but not
+required. https://github.com/veqryn/slog-context is a package for slog which
+provides additional support code for this approach. It also contains wrappers
+for the context functions in logr, so developers who prefer to not use the logr
+APIs directly can use those instead and the resulting code will still be
+interoperable with logr.
 
 ## FAQ
 

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

@@ -0,0 +1,33 @@
+/*
+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 logr
+
+// contextKey is how we find Loggers in a context.Context. With Go < 1.21,
+// the value is always a Logger value. With Go >= 1.21, the value can be a
+// Logger value or a slog.Logger pointer.
+type contextKey struct{}
+
+// notFoundError exists to carry an IsNotFound method.
+type notFoundError struct{}
+
+func (notFoundError) Error() string {
+	return "no logr.Logger was present"
+}
+
+func (notFoundError) IsNotFound() bool {
+	return true
+}

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

@@ -0,0 +1,49 @@
+//go:build !go1.21
+// +build !go1.21
+
+/*
+Copyright 2019 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 logr
+
+import (
+	"context"
+)
+
+// FromContext returns a Logger from ctx or an error if no Logger is found.
+func FromContext(ctx context.Context) (Logger, error) {
+	if v, ok := ctx.Value(contextKey{}).(Logger); ok {
+		return v, nil
+	}
+
+	return Logger{}, notFoundError{}
+}
+
+// FromContextOrDiscard returns a Logger from ctx.  If no Logger is found, this
+// returns a Logger that discards all log messages.
+func FromContextOrDiscard(ctx context.Context) Logger {
+	if v, ok := ctx.Value(contextKey{}).(Logger); ok {
+		return v
+	}
+
+	return Discard()
+}
+
+// NewContext returns a new Context, derived from ctx, which carries the
+// provided Logger.
+func NewContext(ctx context.Context, logger Logger) context.Context {
+	return context.WithValue(ctx, contextKey{}, logger)
+}

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

@@ -0,0 +1,83 @@
+//go:build go1.21
+// +build go1.21
+
+/*
+Copyright 2019 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 logr
+
+import (
+	"context"
+	"fmt"
+	"log/slog"
+)
+
+// FromContext returns a Logger from ctx or an error if no Logger is found.
+func FromContext(ctx context.Context) (Logger, error) {
+	v := ctx.Value(contextKey{})
+	if v == nil {
+		return Logger{}, notFoundError{}
+	}
+
+	switch v := v.(type) {
+	case Logger:
+		return v, nil
+	case *slog.Logger:
+		return FromSlogHandler(v.Handler()), nil
+	default:
+		// Not reached.
+		panic(fmt.Sprintf("unexpected value type for logr context key: %T", v))
+	}
+}
+
+// FromContextAsSlogLogger returns a slog.Logger from ctx or nil if no such Logger is found.
+func FromContextAsSlogLogger(ctx context.Context) *slog.Logger {
+	v := ctx.Value(contextKey{})
+	if v == nil {
+		return nil
+	}
+
+	switch v := v.(type) {
+	case Logger:
+		return slog.New(ToSlogHandler(v))
+	case *slog.Logger:
+		return v
+	default:
+		// Not reached.
+		panic(fmt.Sprintf("unexpected value type for logr context key: %T", v))
+	}
+}
+
+// FromContextOrDiscard returns a Logger from ctx.  If no Logger is found, this
+// returns a Logger that discards all log messages.
+func FromContextOrDiscard(ctx context.Context) Logger {
+	if logger, err := FromContext(ctx); err == nil {
+		return logger
+	}
+	return Discard()
+}
+
+// NewContext returns a new Context, derived from ctx, which carries the
+// provided Logger.
+func NewContext(ctx context.Context, logger Logger) context.Context {
+	return context.WithValue(ctx, contextKey{}, logger)
+}
+
+// NewContextWithSlogLogger returns a new Context, derived from ctx, which carries the
+// provided slog.Logger.
+func NewContextWithSlogLogger(ctx context.Context, logger *slog.Logger) context.Context {
+	return context.WithValue(ctx, contextKey{}, logger)
+}

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

@@ -100,6 +100,11 @@ type Options struct {
 	// details, see docs for Go's time.Layout.
 	TimestampFormat string
 
+	// LogInfoLevel tells funcr what key to use to log the info level.
+	// If not specified, the info level will be logged as "level".
+	// If this is set to "", the info level will not be logged at all.
+	LogInfoLevel *string
+
 	// Verbosity tells funcr which V logs to produce.  Higher values enable
 	// more logs.  Info logs at or below this level will be written, while logs
 	// above this level will be discarded.
@@ -213,6 +218,10 @@ func newFormatter(opts Options, outfmt outputFormat) Formatter {
 	if opts.MaxLogDepth == 0 {
 		opts.MaxLogDepth = defaultMaxLogDepth
 	}
+	if opts.LogInfoLevel == nil {
+		opts.LogInfoLevel = new(string)
+		*opts.LogInfoLevel = "level"
+	}
 	f := Formatter{
 		outputFormat: outfmt,
 		prefix:       "",
@@ -227,12 +236,15 @@ func newFormatter(opts Options, outfmt outputFormat) Formatter {
 // implementation. It should be constructed with NewFormatter. Some of
 // its methods directly implement logr.LogSink.
 type Formatter struct {
-	outputFormat outputFormat
-	prefix       string
-	values       []any
-	valuesStr    string
-	depth        int
-	opts         *Options
+	outputFormat    outputFormat
+	prefix          string
+	values          []any
+	valuesStr       string
+	parentValuesStr string
+	depth           int
+	opts            *Options
+	group           string // for slog groups
+	groupDepth      int
 }
 
 // outputFormat indicates which outputFormat to use.
@@ -253,33 +265,62 @@ 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 {
-		buf.WriteByte('{')
+		buf.WriteByte('{') // for the whole line
 	}
+
 	vals := builtins
 	if hook := f.opts.RenderBuiltinsHook; hook != nil {
 		vals = hook(f.sanitize(vals))
 	}
 	f.flatten(buf, vals, false, false) // keys are ours, no need to escape
 	continuing := len(builtins) > 0
-	if len(f.valuesStr) > 0 {
+
+	if f.parentValuesStr != "" {
 		if continuing {
-			if f.outputFormat == outputJSON {
-				buf.WriteByte(',')
-			} else {
-				buf.WriteByte(' ')
-			}
+			buf.WriteByte(f.comma())
 		}
+		buf.WriteString(f.parentValuesStr)
 		continuing = true
-		buf.WriteString(f.valuesStr)
 	}
+
+	groupDepth := f.groupDepth
+	if f.group != "" {
+		if f.valuesStr != "" || len(args) != 0 {
+			if continuing {
+				buf.WriteByte(f.comma())
+			}
+			buf.WriteString(f.quoted(f.group, true)) // escape user-provided keys
+			buf.WriteByte(f.colon())
+			buf.WriteByte('{') // for the group
+			continuing = false
+		} else {
+			// The group was empty
+			groupDepth--
+		}
+	}
+
+	if f.valuesStr != "" {
+		if continuing {
+			buf.WriteByte(f.comma())
+		}
+		buf.WriteString(f.valuesStr)
+		continuing = true
+	}
+
 	vals = args
 	if hook := f.opts.RenderArgsHook; hook != nil {
 		vals = hook(f.sanitize(vals))
 	}
 	f.flatten(buf, vals, continuing, true) // escape user-provided keys
-	if f.outputFormat == outputJSON {
-		buf.WriteByte('}')
+
+	for i := 0; i < groupDepth; i++ {
+		buf.WriteByte('}') // for the groups
 	}
+
+	if f.outputFormat == outputJSON {
+		buf.WriteByte('}') // for the whole line
+	}
+
 	return buf.String()
 }
 
@@ -298,9 +339,16 @@ func (f Formatter) flatten(buf *bytes.Buffer, kvList []any, continuing bool, esc
 	if len(kvList)%2 != 0 {
 		kvList = append(kvList, noValue)
 	}
+	copied := false
 	for i := 0; i < len(kvList); i += 2 {
 		k, ok := kvList[i].(string)
 		if !ok {
+			if !copied {
+				newList := make([]any, len(kvList))
+				copy(newList, kvList)
+				kvList = newList
+				copied = true
+			}
 			k = f.nonStringKey(kvList[i])
 			kvList[i] = k
 		}
@@ -308,7 +356,7 @@ func (f Formatter) flatten(buf *bytes.Buffer, kvList []any, continuing bool, esc
 
 		if i > 0 || continuing {
 			if f.outputFormat == outputJSON {
-				buf.WriteByte(',')
+				buf.WriteByte(f.comma())
 			} else {
 				// In theory the format could be something we don't understand.  In
 				// practice, we control it, so it won't be.
@@ -316,24 +364,35 @@ func (f Formatter) flatten(buf *bytes.Buffer, kvList []any, continuing bool, esc
 			}
 		}
 
-		if escapeKeys {
-			buf.WriteString(prettyString(k))
-		} else {
-			// this is faster
-			buf.WriteByte('"')
-			buf.WriteString(k)
-			buf.WriteByte('"')
-		}
-		if f.outputFormat == outputJSON {
-			buf.WriteByte(':')
-		} else {
-			buf.WriteByte('=')
-		}
+		buf.WriteString(f.quoted(k, escapeKeys))
+		buf.WriteByte(f.colon())
 		buf.WriteString(f.pretty(v))
 	}
 	return kvList
 }
 
+func (f Formatter) quoted(str string, escape bool) string {
+	if escape {
+		return prettyString(str)
+	}
+	// this is faster
+	return `"` + str + `"`
+}
+
+func (f Formatter) comma() byte {
+	if f.outputFormat == outputJSON {
+		return ','
+	}
+	return ' '
+}
+
+func (f Formatter) colon() byte {
+	if f.outputFormat == outputJSON {
+		return ':'
+	}
+	return '='
+}
+
 func (f Formatter) pretty(value any) string {
 	return f.prettyWithFlags(value, 0, 0)
 }
@@ -407,12 +466,12 @@ func (f Formatter) prettyWithFlags(value any, flags uint32, depth int) string {
 		}
 		for i := 0; i < len(v); i += 2 {
 			if i > 0 {
-				buf.WriteByte(',')
+				buf.WriteByte(f.comma())
 			}
 			k, _ := v[i].(string) // sanitize() above means no need to check success
 			// arbitrary keys might need escaping
 			buf.WriteString(prettyString(k))
-			buf.WriteByte(':')
+			buf.WriteByte(f.colon())
 			buf.WriteString(f.prettyWithFlags(v[i+1], 0, depth+1))
 		}
 		if flags&flagRawStruct == 0 {
@@ -481,7 +540,7 @@ func (f Formatter) prettyWithFlags(value any, flags uint32, depth int) string {
 				continue
 			}
 			if printComma {
-				buf.WriteByte(',')
+				buf.WriteByte(f.comma())
 			}
 			printComma = true // if we got here, we are rendering a field
 			if fld.Anonymous && fld.Type.Kind() == reflect.Struct && name == "" {
@@ -492,10 +551,8 @@ func (f Formatter) prettyWithFlags(value any, flags uint32, depth int) string {
 				name = fld.Name
 			}
 			// field names can't contain characters which need escaping
-			buf.WriteByte('"')
-			buf.WriteString(name)
-			buf.WriteByte('"')
-			buf.WriteByte(':')
+			buf.WriteString(f.quoted(name, false))
+			buf.WriteByte(f.colon())
 			buf.WriteString(f.prettyWithFlags(v.Field(i).Interface(), 0, depth+1))
 		}
 		if flags&flagRawStruct == 0 {
@@ -520,7 +577,7 @@ func (f Formatter) prettyWithFlags(value any, flags uint32, depth int) string {
 		buf.WriteByte('[')
 		for i := 0; i < v.Len(); i++ {
 			if i > 0 {
-				buf.WriteByte(',')
+				buf.WriteByte(f.comma())
 			}
 			e := v.Index(i)
 			buf.WriteString(f.prettyWithFlags(e.Interface(), 0, depth+1))
@@ -534,7 +591,7 @@ func (f Formatter) prettyWithFlags(value any, flags uint32, depth int) string {
 		i := 0
 		for it.Next() {
 			if i > 0 {
-				buf.WriteByte(',')
+				buf.WriteByte(f.comma())
 			}
 			// If a map key supports TextMarshaler, use it.
 			keystr := ""
@@ -556,7 +613,7 @@ func (f Formatter) prettyWithFlags(value any, flags uint32, depth int) string {
 				}
 			}
 			buf.WriteString(keystr)
-			buf.WriteByte(':')
+			buf.WriteByte(f.colon())
 			buf.WriteString(f.prettyWithFlags(it.Value().Interface(), 0, depth+1))
 			i++
 		}
@@ -706,6 +763,53 @@ func (f Formatter) sanitize(kvList []any) []any {
 	return kvList
 }
 
+// startGroup opens a new group scope (basically a sub-struct), which locks all
+// the current saved values and starts them anew.  This is needed to satisfy
+// slog.
+func (f *Formatter) startGroup(group string) {
+	// Unnamed groups are just inlined.
+	if group == "" {
+		return
+	}
+
+	// Any saved values can no longer be changed.
+	buf := bytes.NewBuffer(make([]byte, 0, 1024))
+	continuing := false
+
+	if f.parentValuesStr != "" {
+		buf.WriteString(f.parentValuesStr)
+		continuing = true
+	}
+
+	if f.group != "" && f.valuesStr != "" {
+		if continuing {
+			buf.WriteByte(f.comma())
+		}
+		buf.WriteString(f.quoted(f.group, true)) // escape user-provided keys
+		buf.WriteByte(f.colon())
+		buf.WriteByte('{') // for the group
+		continuing = false
+	}
+
+	if f.valuesStr != "" {
+		if continuing {
+			buf.WriteByte(f.comma())
+		}
+		buf.WriteString(f.valuesStr)
+	}
+
+	// NOTE: We don't close the scope here - that's done later, when a log line
+	// is actually rendered (because we have N scopes to close).
+
+	f.parentValuesStr = buf.String()
+
+	// Start collecting new values.
+	f.group = group
+	f.groupDepth++
+	f.valuesStr = ""
+	f.values = nil
+}
+
 // Init configures this Formatter from runtime info, such as the call depth
 // imposed by logr itself.
 // Note that this receiver is a pointer, so depth can be saved.
@@ -740,7 +844,10 @@ func (f Formatter) FormatInfo(level int, msg string, kvList []any) (prefix, args
 	if policy := f.opts.LogCaller; policy == All || policy == Info {
 		args = append(args, "caller", f.caller())
 	}
-	args = append(args, "level", level, "msg", msg)
+	if key := *f.opts.LogInfoLevel; key != "" {
+		args = append(args, key, level)
+	}
+	args = append(args, "msg", msg)
 	return prefix, f.render(args, kvList)
 }
 

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

@@ -0,0 +1,105 @@
+//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 funcr
+
+import (
+	"context"
+	"log/slog"
+
+	"github.com/go-logr/logr"
+)
+
+var _ logr.SlogSink = &fnlogger{}
+
+const extraSlogSinkDepth = 3 // 2 for slog, 1 for SlogSink
+
+func (l fnlogger) Handle(_ context.Context, record slog.Record) error {
+	kvList := make([]any, 0, 2*record.NumAttrs())
+	record.Attrs(func(attr slog.Attr) bool {
+		kvList = attrToKVs(attr, kvList)
+		return true
+	})
+
+	if record.Level >= slog.LevelError {
+		l.WithCallDepth(extraSlogSinkDepth).Error(nil, record.Message, kvList...)
+	} else {
+		level := l.levelFromSlog(record.Level)
+		l.WithCallDepth(extraSlogSinkDepth).Info(level, record.Message, kvList...)
+	}
+	return nil
+}
+
+func (l fnlogger) WithAttrs(attrs []slog.Attr) logr.SlogSink {
+	kvList := make([]any, 0, 2*len(attrs))
+	for _, attr := range attrs {
+		kvList = attrToKVs(attr, kvList)
+	}
+	l.AddValues(kvList)
+	return &l
+}
+
+func (l fnlogger) WithGroup(name string) logr.SlogSink {
+	l.startGroup(name)
+	return &l
+}
+
+// attrToKVs appends a slog.Attr to a logr-style kvList.  It handle slog Groups
+// and other details of slog.
+func attrToKVs(attr slog.Attr, kvList []any) []any {
+	attrVal := attr.Value.Resolve()
+	if attrVal.Kind() == slog.KindGroup {
+		groupVal := attrVal.Group()
+		grpKVs := make([]any, 0, 2*len(groupVal))
+		for _, attr := range groupVal {
+			grpKVs = attrToKVs(attr, grpKVs)
+		}
+		if attr.Key == "" {
+			// slog says we have to inline these
+			kvList = append(kvList, grpKVs...)
+		} else {
+			kvList = append(kvList, attr.Key, PseudoStruct(grpKVs))
+		}
+	} else if attr.Key != "" {
+		kvList = append(kvList, attr.Key, attrVal.Any())
+	}
+
+	return kvList
+}
+
+// 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 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(logr.ToSlogHandler(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 fnlogger) levelFromSlog(level slog.Level) int {
+	result := -level
+	if result < 0 {
+		result = 0 // because LogSink doesn't expect negative V levels
+	}
+	return int(result)
+}

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

@@ -207,10 +207,6 @@ limitations under the License.
 // those.
 package logr
 
-import (
-	"context"
-)
-
 // New returns a new Logger instance.  This is primarily used by libraries
 // implementing LogSink, rather than end users.  Passing a nil sink will create
 // a Logger which discards all log lines.
@@ -410,45 +406,6 @@ func (l Logger) IsZero() bool {
 	return l.sink == nil
 }
 
-// contextKey is how we find Loggers in a context.Context.
-type contextKey struct{}
-
-// FromContext returns a Logger from ctx or an error if no Logger is found.
-func FromContext(ctx context.Context) (Logger, error) {
-	if v, ok := ctx.Value(contextKey{}).(Logger); ok {
-		return v, nil
-	}
-
-	return Logger{}, notFoundError{}
-}
-
-// notFoundError exists to carry an IsNotFound method.
-type notFoundError struct{}
-
-func (notFoundError) Error() string {
-	return "no logr.Logger was present"
-}
-
-func (notFoundError) IsNotFound() bool {
-	return true
-}
-
-// FromContextOrDiscard returns a Logger from ctx.  If no Logger is found, this
-// returns a Logger that discards all log messages.
-func FromContextOrDiscard(ctx context.Context) Logger {
-	if v, ok := ctx.Value(contextKey{}).(Logger); ok {
-		return v
-	}
-
-	return Discard()
-}
-
-// NewContext returns a new Context, derived from ctx, which carries the
-// provided Logger.
-func NewContext(ctx context.Context, logger Logger) context.Context {
-	return context.WithValue(ctx, contextKey{}, logger)
-}
-
 // RuntimeInfo holds information that the logr "core" library knows which
 // LogSinks might want to know.
 type RuntimeInfo struct {

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

@@ -17,18 +17,16 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package slogr
+package logr
 
 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
+	sink LogSink
 	// Non-nil if sink is non-nil and implements SlogSink.
 	slogSink SlogSink
 
@@ -54,7 +52,7 @@ func (l *slogHandler) GetLevel() slog.Level {
 	return l.levelBias
 }
 
-func (l *slogHandler) Enabled(ctx context.Context, level slog.Level) bool {
+func (l *slogHandler) Enabled(_ context.Context, level slog.Level) bool {
 	return l.sink != nil && (level >= slog.LevelError || l.sink.Enabled(l.levelFromSlog(level)))
 }
 
@@ -72,9 +70,7 @@ func (l *slogHandler) Handle(ctx context.Context, record slog.Record) error {
 
 	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())
-		}
+		kvList = attrToKVs(attr, l.groupPrefix, kvList)
 		return true
 	})
 	if record.Level >= slog.LevelError {
@@ -90,15 +86,15 @@ func (l *slogHandler) Handle(ctx context.Context, record slog.Record) error {
 // 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
+// slog.New(ToSlogHandler(...)).  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
+// This cannot be done when constructing the handler because FromSlogHandler 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 {
+func (l *slogHandler) sinkWithCallDepth() LogSink {
+	if sink, ok := l.sink.(CallDepthLogSink); ok {
 		return sink.WithCallDepth(2)
 	}
 	return l.sink
@@ -109,60 +105,88 @@ func (l *slogHandler) WithAttrs(attrs []slog.Attr) slog.Handler {
 		return l
 	}
 
-	copy := *l
+	clone := *l
 	if l.slogSink != nil {
-		copy.slogSink = l.slogSink.WithAttrs(attrs)
-		copy.sink = copy.slogSink
+		clone.slogSink = l.slogSink.WithAttrs(attrs)
+		clone.sink = clone.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())
-			}
+			kvList = attrToKVs(attr, l.groupPrefix, kvList)
 		}
-		copy.sink = l.sink.WithValues(kvList...)
+		clone.sink = l.sink.WithValues(kvList...)
 	}
-	return &copy
+	return &clone
 }
 
 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)
+	if name == "" {
+		// slog says to inline empty groups
+		return l
 	}
-	return &copy
+	clone := *l
+	if l.slogSink != nil {
+		clone.slogSink = l.slogSink.WithGroup(name)
+		clone.sink = clone.slogSink
+	} else {
+		clone.groupPrefix = addPrefix(clone.groupPrefix, name)
+	}
+	return &clone
 }
 
-func (l *slogHandler) addGroupPrefix(name string) string {
-	if l.groupPrefix == "" {
+// attrToKVs appends a slog.Attr to a logr-style kvList.  It handle slog Groups
+// and other details of slog.
+func attrToKVs(attr slog.Attr, groupPrefix string, kvList []any) []any {
+	attrVal := attr.Value.Resolve()
+	if attrVal.Kind() == slog.KindGroup {
+		groupVal := attrVal.Group()
+		grpKVs := make([]any, 0, 2*len(groupVal))
+		prefix := groupPrefix
+		if attr.Key != "" {
+			prefix = addPrefix(groupPrefix, attr.Key)
+		}
+		for _, attr := range groupVal {
+			grpKVs = attrToKVs(attr, prefix, grpKVs)
+		}
+		kvList = append(kvList, grpKVs...)
+	} else if attr.Key != "" {
+		kvList = append(kvList, addPrefix(groupPrefix, attr.Key), attrVal.Any())
+	}
+
+	return kvList
+}
+
+func addPrefix(prefix, name string) string {
+	if prefix == "" {
 		return name
 	}
-	return l.groupPrefix + groupSeparator + name
+	if name == "" {
+		return prefix
+	}
+	return prefix + 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
+// passed to a 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)
+//
+//	logrV0 := getMyLogger()
+//	logrV2 := logrV0.V(2)
+//	slogV2 := slog.New(logr.ToSlogHandler(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
+	result += l.levelBias // in case the original Logger had a V level
 	if result < 0 {
-		result = 0 // because logr.LogSink doesn't expect negative V levels
+		result = 0 // because LogSink doesn't expect negative V levels
 	}
 	return int(result)
 }

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

@@ -0,0 +1,100 @@
+//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 logr
+
+import (
+	"context"
+	"log/slog"
+)
+
+// FromSlogHandler returns a 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 FromSlogHandler(handler slog.Handler) Logger {
+	if handler, ok := handler.(*slogHandler); ok {
+		if handler.sink == nil {
+			return Discard()
+		}
+		return New(handler.sink).V(int(handler.levelBias))
+	}
+	return New(&slogSink{handler: handler})
+}
+
+// ToSlogHandler returns a slog.Handler which writes to the same sink as the 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 Logger:
+//
+//	logger := <some Logger with 0 as verbosity level>
+//	slog.New(ToSlogHandler(logger.V(10))).Error(...) -> logSink.Error(...)
+//
+// The level of all other records gets reduced by the verbosity
+// level of the 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(ToSlogHandler(logger)).Debug(...) -> logger.GetSink().Info(level=4, ...)
+//	slog.New(ToSlogHandler(logger)).Warning(...) -> logger.GetSink().Info(level=0, ...)
+//	slog.New(ToSlogHandler(logger)).Info(...) -> logger.GetSink().Info(level=0, ...)
+//	slog.New(ToSlogHandler(logger.V(4))).Info(...) -> logger.GetSink().Info(level=4, ...)
+func ToSlogHandler(logger 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 (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 FromSlogHandler
+// and ToSlogHandler.
+type SlogSink interface {
+	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/slogr.go

@@ -23,10 +23,11 @@ limitations under the License.
 //
 // See the README in the top-level [./logr] package for a discussion of
 // interoperability.
+//
+// Deprecated: use the main logr package instead.
 package slogr
 
 import (
-	"context"
 	"log/slog"
 
 	"github.com/go-logr/logr"
@@ -34,75 +35,27 @@ import (
 
 // 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.
+// Deprecated: use [logr.FromSlogHandler] instead.
 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})
+	return logr.FromSlogHandler(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, ...)
+// Deprecated: use [logr.ToSlogHandler] instead.
 func NewSlogHandler(logger logr.Logger) slog.Handler {
-	if sink, ok := logger.GetSink().(*slogSink); ok && logger.GetV() == 0 {
-		return sink.handler
-	}
+	return logr.ToSlogHandler(logger)
+}
 
-	handler := &slogHandler{sink: logger.GetSink(), levelBias: slog.Level(logger.GetV())}
-	if slogSink, ok := handler.sink.(SlogSink); ok {
-		handler.slogSink = slogSink
-	}
-	return handler
+// ToSlogHandler returns a slog.Handler which writes to the same sink as the logr.Logger.
+//
+// Deprecated: use [logr.ToSlogHandler] instead.
+func ToSlogHandler(logger logr.Logger) slog.Handler {
+	return logr.ToSlogHandler(logger)
 }
 
 // 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:
+// logging through the slog.Logger or slog.Handler APIs better.
 //
-//   - 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
-}
+// Deprecated: use [logr.SlogSink] instead.
+type SlogSink = logr.SlogSink

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

@@ -17,24 +17,22 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package slogr
+package logr
 
 import (
 	"context"
 	"log/slog"
 	"runtime"
 	"time"
-
-	"github.com/go-logr/logr"
 )
 
 var (
-	_ logr.LogSink          = &slogSink{}
-	_ logr.CallDepthLogSink = &slogSink{}
-	_ Underlier             = &slogSink{}
+	_ LogSink          = &slogSink{}
+	_ CallDepthLogSink = &slogSink{}
+	_ Underlier        = &slogSink{}
 )
 
-// Underlier is implemented by the LogSink returned by NewLogr.
+// Underlier is implemented by the LogSink returned by NewFromLogHandler.
 type Underlier interface {
 	// GetUnderlying returns the Handler used by the LogSink.
 	GetUnderlying() slog.Handler
@@ -54,7 +52,7 @@ type slogSink struct {
 	handler   slog.Handler
 }
 
-func (l *slogSink) Init(info logr.RuntimeInfo) {
+func (l *slogSink) Init(info RuntimeInfo) {
 	l.callDepth = info.CallDepth
 }
 
@@ -62,7 +60,7 @@ func (l *slogSink) GetUnderlying() slog.Handler {
 	return l.handler
 }
 
-func (l *slogSink) WithCallDepth(depth int) logr.LogSink {
+func (l *slogSink) WithCallDepth(depth int) LogSink {
 	newLogger := *l
 	newLogger.callDepth += depth
 	return &newLogger
@@ -93,18 +91,18 @@ func (l *slogSink) log(err error, msg string, level slog.Level, kvList ...interf
 		record.AddAttrs(slog.Any(errKey, err))
 	}
 	record.Add(kvList...)
-	l.handler.Handle(context.Background(), record)
+	_ = l.handler.Handle(context.Background(), record)
 }
 
-func (l slogSink) WithName(name string) logr.LogSink {
+func (l slogSink) WithName(name string) LogSink {
 	if l.name != "" {
-		l.name = l.name + "/"
+		l.name += "/"
 	}
 	l.name += name
 	return &l
 }
 
-func (l slogSink) WithValues(kvList ...interface{}) logr.LogSink {
+func (l slogSink) WithValues(kvList ...interface{}) LogSink {
 	l.handler = l.handler.WithAttrs(kvListToAttrs(kvList...))
 	return &l
 }

vendor/github.com/go-logr/zapr/.golangci.yaml

@@ -0,0 +1,20 @@
+issues:
+  exclude-use-default: false
+
+linters:
+  disable-all: true
+  enable:
+  - asciicheck
+  - errcheck
+  - forcetypeassert
+  - gocritic
+  - gofmt
+  - goimports
+  - gosimple
+  - govet
+  - ineffassign
+  - misspell
+  - revive
+  - staticcheck
+  - typecheck
+  - unused

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

@@ -2,12 +2,17 @@ Zapr :zap:
 ==========
 
 A [logr](https://github.com/go-logr/logr) implementation using
-[Zap](https://github.com/uber-go/zap).
+[Zap](https://github.com/uber-go/zap). Can also be used as
+[slog](https://pkg.go.dev/log/slog) handler.
 
 Usage
 -----
 
+Via logr:
+
 ```go
+package main
+
 import (
     "fmt"
 
@@ -29,6 +34,33 @@ func main() {
 }
 ```
 
+Via slog:
+
+```
+package main
+
+import (
+	"fmt"
+	"log/slog"
+
+	"github.com/go-logr/logr/slogr"
+	"github.com/go-logr/zapr"
+	"go.uber.org/zap"
+)
+
+func main() {
+	var log *slog.Logger
+
+	zapLog, err := zap.NewDevelopment()
+	if err != nil {
+		panic(fmt.Sprintf("who watches the watchmen (%v)?", err))
+	}
+	log = slog.New(slogr.NewSlogHandler(zapr.NewLogger(zapLog)))
+
+	log.Info("Logr in action!", "the answer", 42)
+}
+```
+
 Increasing Verbosity
 --------------------
 
@@ -68,3 +100,8 @@ For the most part, concepts in Zap correspond directly with those in logr.
 Unlike Zap, all fields *must* be in the form of sugared fields --
 it's illegal to pass a strongly-typed Zap field in a key position to any
 of the logging methods (`Log`, `Error`).
+
+The zapr `logr.LogSink` implementation also implements `logr.SlogHandler`. That
+enables `slogr.NewSlogHandler` to provide a `slog.Handler` which just passes
+parameters through to zapr. zapr handles special slog values (Group,
+LogValuer), regardless of which front-end API is used.

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

@@ -0,0 +1,183 @@
+//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 zapr
+
+import (
+	"context"
+	"log/slog"
+	"runtime"
+
+	"github.com/go-logr/logr/slogr"
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+)
+
+var _ slogr.SlogSink = &zapLogger{}
+
+func (zl *zapLogger) Handle(_ context.Context, record slog.Record) error {
+	zapLevel := zap.InfoLevel
+	intLevel := 0
+	isError := false
+	switch {
+	case record.Level >= slog.LevelError:
+		zapLevel = zap.ErrorLevel
+		isError = true
+	case record.Level >= slog.LevelWarn:
+		zapLevel = zap.WarnLevel
+	case record.Level >= 0:
+		// Already set above -> info.
+	default:
+		zapLevel = zapcore.Level(record.Level)
+		intLevel = int(-zapLevel)
+	}
+
+	if checkedEntry := zl.l.Check(zapLevel, record.Message); checkedEntry != nil {
+		checkedEntry.Time = record.Time
+		checkedEntry.Caller = pcToCallerEntry(record.PC)
+		var fieldsBuffer [2]zap.Field
+		fields := fieldsBuffer[:0]
+		if !isError && zl.numericLevelKey != "" {
+			// Record verbosity for info entries.
+			fields = append(fields, zap.Int(zl.numericLevelKey, intLevel))
+		}
+		// Inline all attributes.
+		fields = append(fields, zap.Inline(zapcore.ObjectMarshalerFunc(func(enc zapcore.ObjectEncoder) error {
+			record.Attrs(func(attr slog.Attr) bool {
+				encodeSlog(enc, attr)
+				return true
+			})
+			return nil
+		})))
+		checkedEntry.Write(fields...)
+	}
+	return nil
+}
+
+func encodeSlog(enc zapcore.ObjectEncoder, attr slog.Attr) {
+	if attr.Equal(slog.Attr{}) {
+		// Ignore empty attribute.
+		return
+	}
+
+	// Check in order of expected frequency, most common ones first.
+	//
+	// Usage statistics for parameters from Kubernetes 152876a3e,
+	// calculated with k/k/test/integration/logs/benchmark:
+	//
+	// kube-controller-manager -v10:
+	// strings: 10043 (85%)
+	// with API objects: 2 (0% of all arguments)
+	//   types and their number of usage: NodeStatus:2
+	// numbers: 792 (6%)
+	// ObjectRef: 292 (2%)
+	// others: 595 (5%)
+	//
+	// kube-scheduler -v10:
+	// strings: 1325 (40%)
+	// with API objects: 109 (3% of all arguments)
+	//   types and their number of usage: PersistentVolume:50 PersistentVolumeClaim:59
+	// numbers: 473 (14%)
+	// ObjectRef: 1305 (39%)
+	// others: 176 (5%)
+
+	kind := attr.Value.Kind()
+	switch kind {
+	case slog.KindString:
+		enc.AddString(attr.Key, attr.Value.String())
+	case slog.KindLogValuer:
+		// This includes klog.KObj.
+		encodeSlog(enc, slog.Attr{
+			Key:   attr.Key,
+			Value: attr.Value.Resolve(),
+		})
+	case slog.KindInt64:
+		enc.AddInt64(attr.Key, attr.Value.Int64())
+	case slog.KindUint64:
+		enc.AddUint64(attr.Key, attr.Value.Uint64())
+	case slog.KindFloat64:
+		enc.AddFloat64(attr.Key, attr.Value.Float64())
+	case slog.KindBool:
+		enc.AddBool(attr.Key, attr.Value.Bool())
+	case slog.KindDuration:
+		enc.AddDuration(attr.Key, attr.Value.Duration())
+	case slog.KindTime:
+		enc.AddTime(attr.Key, attr.Value.Time())
+	case slog.KindGroup:
+		attrs := attr.Value.Group()
+		if attr.Key == "" {
+			// Inline group.
+			for _, attr := range attrs {
+				encodeSlog(enc, attr)
+			}
+			return
+		}
+		if len(attrs) == 0 {
+			// Ignore empty group.
+			return
+		}
+		_ = enc.AddObject(attr.Key, marshalAttrs(attrs))
+	default:
+		// We have to go through reflection in zap.Any to get support
+		// for e.g. fmt.Stringer.
+		zap.Any(attr.Key, attr.Value.Any()).AddTo(enc)
+	}
+}
+
+type marshalAttrs []slog.Attr
+
+func (attrs marshalAttrs) MarshalLogObject(enc zapcore.ObjectEncoder) error {
+	for _, attr := range attrs {
+		encodeSlog(enc, attr)
+	}
+	return nil
+}
+
+var _ zapcore.ObjectMarshaler = marshalAttrs(nil)
+
+func pcToCallerEntry(pc uintptr) zapcore.EntryCaller {
+	if pc == 0 {
+		return zapcore.EntryCaller{}
+	}
+	// Same as https://cs.opensource.google/go/x/exp/+/642cacee:slog/record.go;drc=642cacee5cc05231f45555a333d07f1005ffc287;l=70
+	fs := runtime.CallersFrames([]uintptr{pc})
+	f, _ := fs.Next()
+	if f.File == "" {
+		return zapcore.EntryCaller{}
+	}
+	return zapcore.EntryCaller{
+		Defined:  true,
+		PC:       pc,
+		File:     f.File,
+		Line:     f.Line,
+		Function: f.Function,
+	}
+}
+
+func (zl *zapLogger) WithAttrs(attrs []slog.Attr) slogr.SlogSink {
+	newLogger := *zl
+	newLogger.l = newLogger.l.With(zap.Inline(marshalAttrs(attrs)))
+	return &newLogger
+}
+
+func (zl *zapLogger) WithGroup(name string) slogr.SlogSink {
+	newLogger := *zl
+	newLogger.l = newLogger.l.With(zap.Namespace(name))
+	return &newLogger
+}

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

@@ -31,14 +31,14 @@ limitations under the License.
 // Package zapr defines an implementation of the github.com/go-logr/logr
 // interfaces built on top of Zap (go.uber.org/zap).
 //
-// Usage
+// # Usage
 //
 // A new logr.Logger can be constructed from an existing zap.Logger using
 // the NewLogger function:
 //
-//  log := zapr.NewLogger(someZapLogger)
+//	log := zapr.NewLogger(someZapLogger)
 //
-// Implementation Details
+// # Implementation Details
 //
 // For the most part, concepts in Zap correspond directly with those in
 // logr.
@@ -168,15 +168,6 @@ func (zl *zapLogger) handleFields(lvl int, args []interface{}, additional ...zap
 	return append(fields, additional...)
 }
 
-func zapIt(field string, val interface{}) zap.Field {
-	// Handle types that implement logr.Marshaler: log the replacement
-	// object instead of the original one.
-	if marshaler, ok := val.(logr.Marshaler); ok {
-		field, val = invokeMarshaler(field, marshaler)
-	}
-	return zap.Any(field, val)
-}
-
 func invokeMarshaler(field string, m logr.Marshaler) (f string, ret interface{}) {
 	defer func() {
 		if r := recover(); r != nil {

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

@@ -0,0 +1,34 @@
+//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 zapr
+
+import (
+	"github.com/go-logr/logr"
+	"go.uber.org/zap"
+)
+
+func zapIt(field string, val interface{}) zap.Field {
+	// Handle types that implement logr.Marshaler: log the replacement
+	// object instead of the original one.
+	if marshaler, ok := val.(logr.Marshaler); ok {
+		field, val = invokeMarshaler(field, marshaler)
+	}
+	return zap.Any(field, val)
+}

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

@@ -0,0 +1,48 @@
+//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 zapr
+
+import (
+	"log/slog"
+
+	"github.com/go-logr/logr"
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+)
+
+func zapIt(field string, val interface{}) zap.Field {
+	switch valTyped := val.(type) {
+	case logr.Marshaler:
+		// Handle types that implement logr.Marshaler: log the replacement
+		// object instead of the original one.
+		field, val = invokeMarshaler(field, valTyped)
+	case slog.LogValuer:
+		// The same for slog.LogValuer. We let slog.Value handle
+		// potential panics and recursion.
+		val = slog.AnyValue(val).Resolve()
+	}
+	if slogValue, ok := val.(slog.Value); ok {
+		return zap.Inline(zapcore.ObjectMarshalerFunc(func(enc zapcore.ObjectEncoder) error {
+			encodeSlog(enc, slog.Attr{Key: field, Value: slogValue})
+			return nil
+		}))
+	}
+	return zap.Any(field, val)
+}