diff options
Diffstat (limited to 'vendor/github.com/go-logr')
| -rw-r--r-- | vendor/github.com/go-logr/logr/README.md | 73 | ||||
| -rw-r--r-- | vendor/github.com/go-logr/logr/context.go | 33 | ||||
| -rw-r--r-- | vendor/github.com/go-logr/logr/context_noslog.go | 49 | ||||
| -rw-r--r-- | vendor/github.com/go-logr/logr/context_slog.go | 83 | ||||
| -rw-r--r-- | vendor/github.com/go-logr/logr/funcr/funcr.go | 185 | ||||
| -rw-r--r-- | vendor/github.com/go-logr/logr/funcr/slogsink.go | 105 | ||||
| -rw-r--r-- | vendor/github.com/go-logr/logr/logr.go | 43 | ||||
| -rw-r--r-- | vendor/github.com/go-logr/logr/sloghandler.go | 192 | ||||
| -rw-r--r-- | vendor/github.com/go-logr/logr/slogr.go | 100 | ||||
| -rw-r--r-- | vendor/github.com/go-logr/logr/slogsink.go | 120 |
10 files changed, 871 insertions, 112 deletions
diff --git a/vendor/github.com/go-logr/logr/README.md b/vendor/github.com/go-logr/logr/README.md index a8c29bfbd..8969526a6 100644 --- a/vendor/github.com/go-logr/logr/README.md +++ b/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: - - 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. +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. + +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. + +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 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 diff --git a/vendor/github.com/go-logr/logr/context.go b/vendor/github.com/go-logr/logr/context.go new file mode 100644 index 000000000..de8bcc3ad --- /dev/null +++ b/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 +} diff --git a/vendor/github.com/go-logr/logr/context_noslog.go b/vendor/github.com/go-logr/logr/context_noslog.go new file mode 100644 index 000000000..f012f9a18 --- /dev/null +++ b/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) +} diff --git a/vendor/github.com/go-logr/logr/context_slog.go b/vendor/github.com/go-logr/logr/context_slog.go new file mode 100644 index 000000000..065ef0b82 --- /dev/null +++ b/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) +} diff --git a/vendor/github.com/go-logr/logr/funcr/funcr.go b/vendor/github.com/go-logr/logr/funcr/funcr.go index 12e5807cc..fb2f866f4 100644 --- a/vendor/github.com/go-logr/logr/funcr/funcr.go +++ b/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 + } + + 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 + + for i := 0; i < groupDepth; i++ { + buf.WriteByte('}') // for the groups + } + if f.outputFormat == outputJSON { - buf.WriteByte('}') + 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) } diff --git a/vendor/github.com/go-logr/logr/funcr/slogsink.go b/vendor/github.com/go-logr/logr/funcr/slogsink.go new file mode 100644 index 000000000..7bd84761e --- /dev/null +++ b/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) +} diff --git a/vendor/github.com/go-logr/logr/logr.go b/vendor/github.com/go-logr/logr/logr.go index 2a5075a18..b4428e105 100644 --- a/vendor/github.com/go-logr/logr/logr.go +++ b/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 { diff --git a/vendor/github.com/go-logr/logr/sloghandler.go b/vendor/github.com/go-logr/logr/sloghandler.go new file mode 100644 index 000000000..82d1ba494 --- /dev/null +++ b/vendor/github.com/go-logr/logr/sloghandler.go @@ -0,0 +1,192 @@ +//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" +) + +type slogHandler struct { + // May be nil, in which case all logs get discarded. + sink 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(_ 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 { + kvList = attrToKVs(attr, l.groupPrefix, kvList) + 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(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 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() LogSink { + if sink, ok := l.sink.(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 + } + + clone := *l + if l.slogSink != nil { + clone.slogSink = l.slogSink.WithAttrs(attrs) + clone.sink = clone.slogSink + } else { + kvList := make([]any, 0, 2*len(attrs)) + for _, attr := range attrs { + kvList = attrToKVs(attr, l.groupPrefix, kvList) + } + clone.sink = l.sink.WithValues(kvList...) + } + return &clone +} + +func (l *slogHandler) WithGroup(name string) slog.Handler { + if l.sink == nil { + return l + } + if name == "" { + // slog says to inline empty groups + return l + } + 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 +} + +// 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 + } + 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 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 *slogHandler) levelFromSlog(level slog.Level) int { + result := -level + result += l.levelBias // in case the original Logger had a V level + if result < 0 { + result = 0 // because LogSink doesn't expect negative V levels + } + return int(result) +} diff --git a/vendor/github.com/go-logr/logr/slogr.go b/vendor/github.com/go-logr/logr/slogr.go new file mode 100644 index 000000000..28a83d024 --- /dev/null +++ b/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 +} diff --git a/vendor/github.com/go-logr/logr/slogsink.go b/vendor/github.com/go-logr/logr/slogsink.go new file mode 100644 index 000000000..4060fcbc2 --- /dev/null +++ b/vendor/github.com/go-logr/logr/slogsink.go @@ -0,0 +1,120 @@ +//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" + "runtime" + "time" +) + +var ( + _ LogSink = &slogSink{} + _ CallDepthLogSink = &slogSink{} + _ Underlier = &slogSink{} +) + +// Underlier is implemented by the LogSink returned by NewFromLogHandler. +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 RuntimeInfo) { + l.callDepth = info.CallDepth +} + +func (l *slogSink) GetUnderlying() slog.Handler { + return l.handler +} + +func (l *slogSink) WithCallDepth(depth int) 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) LogSink { + if l.name != "" { + l.name += "/" + } + l.name += name + return &l +} + +func (l slogSink) WithValues(kvList ...interface{}) 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 +} |