Add structured logging infrastructure (#246)

New global flags:
* `--log-file FILE`: can be literal `stdout`, `stderr`, or a file name (default `stderr`)
* `--log-level LEVEL`: can be `error`, `warn`, `info`, `debug`, `trace`, or `disabled` (default `disabled`)
* `--log-format TYPE`: can be `text` or `json` (default `text`)

New functions in the `log` package take a `context.Context` and retrieve
the logger from said context.

Because we carry the logger in a context, adding
[attributes](https://pkg.go.dev/golang.org/x/exp/slog#hdr-Attrs_and_Values)
to the logger can be done as follows:

```go
ctx = log.NewContext(ctx, log.GetLogger(ctx).With("foo", "bar"))
```

cmd/root/logger.go

@@ -0,0 +1,50 @@
+package root
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/databricks/bricks/libs/flags"
+	"github.com/databricks/bricks/libs/log"
+	"github.com/spf13/cobra"
+	"golang.org/x/exp/slog"
+)
+
+func initializeLogger(ctx context.Context, cmd *cobra.Command) (context.Context, error) {
+	opts := slog.HandlerOptions{}
+	opts.Level = logLevel.Level()
+	opts.AddSource = true
+	opts.ReplaceAttr = log.ReplaceLevelAttr
+
+	// Open the underlying log file if the user configured an actual file to log to.
+	err := logFile.Open()
+	if err != nil {
+		return nil, err
+	}
+
+	var handler slog.Handler
+	switch logOutput {
+	case flags.OutputJSON:
+		handler = opts.NewJSONHandler(logFile.Writer())
+	case flags.OutputText:
+		handler = opts.NewTextHandler(logFile.Writer())
+	default:
+		return nil, fmt.Errorf("invalid log output: %s", logOutput)
+	}
+
+	slog.SetDefault(slog.New(handler))
+	return log.NewContext(ctx, slog.Default()), nil
+}
+
+var logFile = flags.NewLogFileFlag()
+var logLevel = flags.NewLogLevelFlag()
+var logOutput = flags.OutputText
+
+func init() {
+	RootCmd.PersistentFlags().Var(&logFile, "log-file", "file to write logs to")
+	RootCmd.PersistentFlags().Var(&logLevel, "log-level", "log level")
+	RootCmd.PersistentFlags().Var(&logOutput, "log-format", "log output format (text or json)")
+	RootCmd.RegisterFlagCompletionFunc("log-file", logFile.Complete)
+	RootCmd.RegisterFlagCompletionFunc("log-level", logLevel.Complete)
+	RootCmd.RegisterFlagCompletionFunc("log-format", logOutput.Complete)
+}

cmd/root/root.go

@@ -3,9 +3,7 @@ package root
 import (
 	"context"
 	"fmt"
-	"log"
 	"os"
-	"strings"
 
 	"github.com/spf13/cobra"
 )
@@ -22,40 +20,21 @@ var RootCmd = &cobra.Command{
 	// The usage string is include in [flagErrorFunc] for flag errors only.
 	SilenceUsage: true,
 
-	PersistentPreRun: func(cmd *cobra.Command, args []string) {
+	PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
 		ctx := cmd.Context()
 
+		// Configure default logger.
+		ctx, err := initializeLogger(ctx, cmd)
+		if err != nil {
+			return err
+		}
+
 		// Configure our user agent with the command that's about to be executed.
 		ctx = withCommandInUserAgent(ctx, cmd)
 		ctx = withUpstreamInUserAgent(ctx)
 		cmd.SetContext(ctx)
-
+		return nil
-		if Verbose {
-			logLevel = append(logLevel, "[DEBUG]")
-		}
-		log.SetOutput(&logLevel)
 	},
-
-	// Uncomment the following line if your bare application
-	// has an action associated with it:
-}
-
-// TODO: replace with zerolog
-type levelWriter []string
-
-var logLevel = levelWriter{"[INFO]", "[ERROR]", "[WARN]"}
-
-// Verbose means additional debug information, like API logs
-var Verbose bool
-
-func (lw *levelWriter) Write(p []byte) (n int, err error) {
-	a := string(p)
-	for _, l := range *lw {
-		if strings.Contains(a, l) {
-			return os.Stderr.Write(p)
-		}
-	}
-	return
 }
 
 // Wrap flag errors to include the usage string.
@@ -76,6 +55,9 @@ func Execute() {
 
 func init() {
 	RootCmd.SetFlagErrorFunc(flagErrorFunc)
-	// flags available for every child command
+
-	RootCmd.PersistentFlags().BoolVarP(&Verbose, "verbose", "v", false, "print debug logs")
+	// The VS Code extension passes `-v` in debug mode and must be changed
+	// to use the new flags in `./logger.go` prior to removing this flag.
+	RootCmd.PersistentFlags().BoolP("verbose", "v", false, "")
+	RootCmd.PersistentFlags().MarkHidden("verbose")
 }

docs/output.md

@@ -0,0 +1,20 @@
+# Principles for CLI output
+
+There are four types of output:
+1. Command output
+2. Command error
+3. Progress reporting
+4. Logging
+
+We try to adhere to the following rules:
+* On success, the command's primary output is written to standard output.
+  This is required to make commands composable in scripts.
+* On error, the command's error message is written to standard error
+  and the command exits with a non-zero exit code.
+* Progress reporting may be provided to standard error,
+  iff standard error is a TTY _and_ logging is disabled _or_ the logging
+  output is different from standard error.
+* Logging must be enabled explicitly.
+  If enabled, it writes to standard error by default.
+  Logging is **only** an aid to investigate issues and must not be relied
+  on for command output, command errors, or progress reporting.

go.mod

@@ -24,7 +24,7 @@ require (
 	github.com/hashicorp/hc-install v0.5.0
 	github.com/hashicorp/terraform-exec v0.18.1
 	github.com/hashicorp/terraform-json v0.16.0
-	golang.org/x/exp v0.0.0-20221031165847-c99f073a8326
+	golang.org/x/exp v0.0.0-20230310171629-522b1b587ee0
 	golang.org/x/sync v0.1.0
 )
 

go.sum

@@ -203,8 +203,8 @@ golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5y
 golang.org/x/crypto v0.5.0 h1:U/0M97KRkSFvyD/3FSmdP5W5swImpNgle/EHFhOsQPE=
 golang.org/x/crypto v0.5.0/go.mod h1:NK/OQwhpMQP3MwtdjgLlYHnH9ebylxKWv3e0fK+mkQU=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
-golang.org/x/exp v0.0.0-20221031165847-c99f073a8326 h1:QfTh0HpN6hlw6D3vu8DAwC8pBIwikq0AI1evdm+FksE=
+golang.org/x/exp v0.0.0-20230310171629-522b1b587ee0 h1:LGJsf5LRplCck6jUCH3dBL2dmycNruWNF5xugkSlfXw=
-golang.org/x/exp v0.0.0-20221031165847-c99f073a8326/go.mod h1:CxIveKay+FTh1D0yPZemJVgC/95VzuuOLq5Qi4xnoYc=
+golang.org/x/exp v0.0.0-20230310171629-522b1b587ee0/go.mod h1:CxIveKay+FTh1D0yPZemJVgC/95VzuuOLq5Qi4xnoYc=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
 golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
 golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=

libs/flags/log_file_flag.go

@@ -0,0 +1,110 @@
+package flags
+
+import (
+	"io"
+	"os"
+	"strings"
+
+	"github.com/spf13/cobra"
+)
+
+// Abstract over files that are already open (e.g. stderr) and
+// files that need to be opened before use.
+type logFile interface {
+	Writer() io.Writer
+	Open() error
+	Close() error
+}
+
+// nopLogFile implements [logFile] for [os.Stderr] and [os.Stdout].
+// The [logFile.Open] and [logFile.Close] functions do nothing.
+type nopLogFile struct {
+	f *os.File
+}
+
+func (f *nopLogFile) Writer() io.Writer {
+	return f.f
+}
+
+func (f *nopLogFile) Open() error {
+	return nil
+}
+
+func (f *nopLogFile) Close() error {
+	return nil
+}
+
+// nopLogFile implements [logFile] for actual files.
+type realLogFile struct {
+	s string
+	f *os.File
+}
+
+func (f *realLogFile) Writer() io.Writer {
+	if f.f == nil {
+		panic("file hasn't been opened")
+	}
+	return f.f
+}
+
+func (f *realLogFile) Open() error {
+	file, err := os.OpenFile(f.s, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0600)
+	if err != nil {
+		return err
+	}
+
+	f.f = file
+	return nil
+}
+
+func (f *realLogFile) Close() error {
+	if f.f == nil {
+		return nil
+	}
+	return f.f.Close()
+}
+
+type LogFileFlag struct {
+	name string
+	logFile
+}
+
+func NewLogFileFlag() LogFileFlag {
+	return LogFileFlag{
+		name:    "stderr",
+		logFile: &nopLogFile{os.Stderr},
+	}
+}
+
+func (f *LogFileFlag) String() string {
+	return f.name
+}
+
+func (f *LogFileFlag) Set(s string) error {
+	lower := strings.ToLower(s)
+	switch lower {
+	case "stderr":
+		f.name = lower
+		f.logFile = &nopLogFile{os.Stderr}
+	case "stdout":
+		f.name = lower
+		f.logFile = &nopLogFile{os.Stdout}
+	default:
+		f.name = s
+		f.logFile = &realLogFile{s: s}
+	}
+
+	return nil
+}
+
+func (f *LogFileFlag) Type() string {
+	return "file"
+}
+
+// Complete is the Cobra compatible completion function for this flag.
+func (f *LogFileFlag) Complete(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+	return []string{
+		"stdout",
+		"stderr",
+	}, cobra.ShellCompDirectiveDefault
+}

libs/flags/log_file_flag_test.go

@@ -0,0 +1,126 @@
+package flags
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestLogFileFlagDefault(t *testing.T) {
+	f := NewLogFileFlag()
+	assert.Equal(t, os.Stderr, f.Writer())
+	assert.Equal(t, "stderr", f.String())
+}
+
+func TestLogFileFlagSetStdout(t *testing.T) {
+	var err error
+
+	f := NewLogFileFlag()
+	err = f.Set("stdout")
+	require.NoError(t, err)
+	assert.Equal(t, os.Stdout, f.Writer())
+	assert.Equal(t, "stdout", f.String())
+	err = f.Set("STDOUT")
+	require.NoError(t, err)
+	assert.Equal(t, os.Stdout, f.Writer())
+	assert.Equal(t, "stdout", f.String())
+}
+
+func TestLogFileFlagSetStderr(t *testing.T) {
+	var err error
+
+	f := NewLogFileFlag()
+	err = f.Set("stderr")
+	require.NoError(t, err)
+	assert.Equal(t, os.Stderr, f.Writer())
+	assert.Equal(t, "stderr", f.String())
+	err = f.Set("STDERR")
+	require.NoError(t, err)
+	assert.Equal(t, os.Stderr, f.Writer())
+	assert.Equal(t, "stderr", f.String())
+}
+
+func TestLogFileFlagSetNewFile(t *testing.T) {
+	var err error
+
+	// Synthesize path to logfile.
+	dir := t.TempDir()
+	path := filepath.Join(dir, "logfile")
+
+	// Configure flag.
+	f := NewLogFileFlag()
+	err = f.Set(path)
+	require.NoError(t, err)
+	err = f.Open()
+	require.NoError(t, err)
+	defer f.Close()
+
+	// Writer must be the underlying file.
+	w := f.Writer()
+	file, ok := w.(*os.File)
+	require.True(t, ok)
+	assert.Equal(t, path, file.Name())
+
+	// String must be equal to the path.
+	assert.Equal(t, path, f.String())
+}
+
+func TestLogFileFlagSetExistingFile(t *testing.T) {
+	var err error
+
+	// Synthesize path to logfile.
+	dir := t.TempDir()
+	path := filepath.Join(dir, "logfile")
+
+	// Add some contents to temporary file.
+	file, err := os.Create(path)
+	require.NoError(t, err)
+	_, err = file.WriteString("a\n")
+	require.NoError(t, err)
+	err = file.Close()
+	require.NoError(t, err)
+
+	// Configure flag.
+	f := NewLogFileFlag()
+	err = f.Set(path)
+	require.NoError(t, err)
+	err = f.Open()
+	require.NoError(t, err)
+	defer f.Close()
+
+	// Writer must be the underlying file.
+	w := f.Writer()
+	file, ok := w.(*os.File)
+	require.True(t, ok)
+	assert.Equal(t, path, file.Name())
+
+	// String must be equal to the path.
+	assert.Equal(t, path, f.String())
+
+	// Write more contents.
+	_, err = w.Write([]byte("b\n"))
+	require.NoError(t, err)
+
+	// Verify that the contents was appended to the file.
+	buf, err := os.ReadFile(path)
+	require.NoError(t, err)
+	assert.Equal(t, "a\nb\n", string(buf))
+}
+
+func TestLogFileFlagSetBadPath(t *testing.T) {
+	var err error
+
+	// Synthesize path that doesn't exist.
+	dir := t.TempDir()
+	path := filepath.Join(dir, "invalid/logfile")
+
+	// Configure flag.
+	f := NewLogFileFlag()
+	err = f.Set(path)
+	require.NoError(t, err)
+	err = f.Open()
+	assert.Error(t, err)
+}

libs/flags/log_level_flag.go

@@ -0,0 +1,63 @@
+package flags
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/databricks/bricks/libs/log"
+	"github.com/spf13/cobra"
+	"golang.org/x/exp/maps"
+	"golang.org/x/exp/slog"
+)
+
+var levels = map[string]slog.Level{
+	"trace":    log.LevelTrace,
+	"debug":    log.LevelDebug,
+	"info":     log.LevelInfo,
+	"warn":     log.LevelWarn,
+	"error":    log.LevelError,
+	"disabled": log.LevelDisabled,
+}
+
+type LogLevelFlag struct {
+	l slog.Level
+}
+
+func NewLogLevelFlag() LogLevelFlag {
+	return LogLevelFlag{
+		l: log.LevelDisabled,
+	}
+}
+
+func (f *LogLevelFlag) Level() slog.Level {
+	return f.l
+}
+
+func (f *LogLevelFlag) String() string {
+	for name, l := range levels {
+		if f.l == l {
+			return name
+		}
+	}
+
+	return "(unknown)"
+}
+
+func (f *LogLevelFlag) Set(s string) error {
+	l, ok := levels[strings.ToLower(s)]
+	if !ok {
+		return fmt.Errorf("accepted arguments are %s", strings.Join(maps.Keys(levels), ", "))
+	}
+
+	f.l = l
+	return nil
+}
+
+func (f *LogLevelFlag) Type() string {
+	return "format"
+}
+
+// Complete is the Cobra compatible completion function for this flag.
+func (f *LogLevelFlag) Complete(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+	return maps.Keys(levels), cobra.ShellCompDirectiveNoFileComp
+}

libs/flags/log_level_flag_test.go

@@ -0,0 +1,29 @@
+package flags
+
+import (
+	"testing"
+
+	"github.com/databricks/bricks/libs/log"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestLogLevelFlagDefault(t *testing.T) {
+	f := NewLogLevelFlag()
+	assert.Equal(t, log.LevelDisabled, f.Level())
+	assert.Equal(t, "disabled", f.String())
+}
+
+func TestLogLevelFlagSetValid(t *testing.T) {
+	f := NewLogLevelFlag()
+	err := f.Set("info")
+	require.NoError(t, err)
+	assert.Equal(t, log.LevelInfo, f.Level())
+	assert.Equal(t, "info", f.String())
+}
+
+func TestLogLevelFlagSetInvalid(t *testing.T) {
+	f := NewLogLevelFlag()
+	err := f.Set("invalid")
+	assert.ErrorContains(t, err, "accepted arguments are ")
+}

libs/flags/output.go

@@ -3,6 +3,8 @@ package flags
 import (
 	"fmt"
 	"strings"
+
+	"github.com/spf13/cobra"
 )
 
 // Output controls how the CLI should produce its output.
@@ -37,3 +39,11 @@ func (f *Output) Set(s string) error {
 func (f *Output) Type() string {
 	return "type"
 }
+
+// Complete is the Cobra compatible completion function for this flag.
+func (f *Output) Complete(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+	return []string{
+		OutputText.String(),
+		OutputJSON.String(),
+	}, cobra.ShellCompDirectiveNoFileComp
+}

libs/log/context.go

@@ -0,0 +1,26 @@
+package log
+
+import (
+	"context"
+
+	"golang.org/x/exp/slog"
+)
+
+type logger int
+
+var loggerKey logger
+
+// NewContext returns a new Context that carries the specified logger.
+//
+// Discussion why this is not part of slog itself: https://github.com/golang/go/issues/58243.
+func NewContext(ctx context.Context, logger *slog.Logger) context.Context {
+	return context.WithValue(ctx, loggerKey, logger)
+}
+
+// FromContext returns the Logger value stored in ctx, if any.
+//
+// Discussion why this is not part of slog itself: https://github.com/golang/go/issues/58243.
+func FromContext(ctx context.Context) (*slog.Logger, bool) {
+	u, ok := ctx.Value(loggerKey).(*slog.Logger)
+	return u, ok
+}

libs/log/levels.go

@@ -0,0 +1,39 @@
+package log
+
+import "golang.org/x/exp/slog"
+
+const (
+	LevelTrace slog.Level = -8
+	LevelDebug slog.Level = -4
+	LevelInfo  slog.Level = 0
+	LevelWarn  slog.Level = 4
+	LevelError slog.Level = 8
+
+	// LevelDisabled means nothing is ever logged (no call site may use this level).
+	LevelDisabled slog.Level = 16
+)
+
+// ReplaceLevelAttr rewrites the level attribute to the correct string value.
+// This is done because slog doesn't include trace level logging and
+// otherwise trace logs show up as `DEBUG-4`.
+func ReplaceLevelAttr(groups []string, a slog.Attr) slog.Attr {
+	if a.Key != slog.LevelKey {
+		return a
+	}
+
+	level := a.Value.Any().(slog.Level)
+	switch {
+	case level < LevelDebug:
+		a.Value = slog.StringValue("TRACE")
+	case level < LevelInfo:
+		a.Value = slog.StringValue("DEBUG")
+	case level < LevelWarn:
+		a.Value = slog.StringValue("INFO")
+	case level < LevelError:
+		a.Value = slog.StringValue("WARNING")
+	default:
+		a.Value = slog.StringValue("ERROR")
+	}
+
+	return a
+}

libs/log/logger.go

@@ -0,0 +1,77 @@
+package log
+
+import (
+	"context"
+	"fmt"
+	"runtime"
+	"time"
+
+	"golang.org/x/exp/slog"
+)
+
+// GetLogger returns either the logger configured on the context,
+// or the global logger if one isn't defined.
+func GetLogger(ctx context.Context) *slog.Logger {
+	logger, ok := FromContext(ctx)
+	if !ok {
+		logger = slog.Default()
+	}
+	return logger
+}
+
+// helper function to abstract logging a string message.
+func log(logger *slog.Logger, ctx context.Context, level slog.Level, msg string) {
+	var pcs [1]uintptr
+	// skip [runtime.Callers, this function, this function's caller].
+	runtime.Callers(3, pcs[:])
+	r := slog.NewRecord(time.Now(), level, msg, pcs[0])
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	_ = logger.Handler().Handle(ctx, r)
+}
+
+// Tracef logs a formatted string using the context-local or global logger.
+func Tracef(ctx context.Context, format string, v ...any) {
+	logger := GetLogger(ctx)
+	if !logger.Enabled(ctx, LevelTrace) {
+		return
+	}
+	log(logger, ctx, LevelTrace, fmt.Sprintf(format, v...))
+}
+
+// Debugf logs a formatted string using the context-local or global logger.
+func Debugf(ctx context.Context, format string, v ...any) {
+	logger := GetLogger(ctx)
+	if !logger.Enabled(ctx, LevelDebug) {
+		return
+	}
+	log(logger, ctx, LevelDebug, fmt.Sprintf(format, v...))
+}
+
+// Infof logs a formatted string using the context-local or global logger.
+func Infof(ctx context.Context, format string, v ...any) {
+	logger := GetLogger(ctx)
+	if !logger.Enabled(ctx, LevelInfo) {
+		return
+	}
+	log(logger, ctx, LevelInfo, fmt.Sprintf(format, v...))
+}
+
+// Warnf logs a formatted string using the context-local or global logger.
+func Warnf(ctx context.Context, format string, v ...any) {
+	logger := GetLogger(ctx)
+	if !logger.Enabled(ctx, LevelWarn) {
+		return
+	}
+	log(logger, ctx, LevelWarn, fmt.Sprintf(format, v...))
+}
+
+// Errorf logs a formatted string using the context-local or global logger.
+func Errorf(ctx context.Context, format string, v ...any) {
+	logger := GetLogger(ctx)
+	if !logger.Enabled(ctx, LevelError) {
+		return
+	}
+	log(logger, ctx, LevelError, fmt.Sprintf(format, v...))
+}

libs/log/sdk.go

@@ -0,0 +1,89 @@
+package log
+
+import (
+	"context"
+	"fmt"
+	"runtime"
+	"time"
+
+	sdk "github.com/databricks/databricks-sdk-go/logger"
+	"golang.org/x/exp/slog"
+)
+
+// slogAdapter makes an slog.Logger usable with the Databricks SDK.
+type slogAdapter struct{}
+
+func (s slogAdapter) Enabled(ctx context.Context, level sdk.Level) bool {
+	logger := GetLogger(ctx)
+	switch level {
+	case sdk.LevelTrace:
+		return logger.Enabled(ctx, LevelTrace)
+	case sdk.LevelDebug:
+		return logger.Enabled(ctx, LevelDebug)
+	case sdk.LevelInfo:
+		return logger.Enabled(ctx, LevelInfo)
+	case sdk.LevelWarn:
+		return logger.Enabled(ctx, LevelWarn)
+	case sdk.LevelError:
+		return logger.Enabled(ctx, LevelError)
+	default:
+		return true
+	}
+}
+
+func (s slogAdapter) log(logger *slog.Logger, ctx context.Context, level slog.Level, msg string) {
+	var pcs [1]uintptr
+	// skip [runtime.Callers, this function, this function's caller, the caller in the SDK].
+	runtime.Callers(4, pcs[:])
+	r := slog.NewRecord(time.Now(), level, msg, pcs[0])
+	r.AddAttrs(slog.Bool("sdk", true))
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	_ = logger.Handler().Handle(ctx, r)
+}
+
+func (s slogAdapter) Tracef(ctx context.Context, format string, v ...any) {
+	logger := GetLogger(ctx)
+	if !logger.Enabled(ctx, LevelTrace) {
+		return
+	}
+	s.log(logger, ctx, LevelTrace, fmt.Sprintf(format, v...))
+}
+
+func (s slogAdapter) Debugf(ctx context.Context, format string, v ...any) {
+	logger := GetLogger(ctx)
+	if !logger.Enabled(ctx, LevelDebug) {
+		return
+	}
+	s.log(logger, ctx, LevelDebug, fmt.Sprintf(format, v...))
+}
+
+func (s slogAdapter) Infof(ctx context.Context, format string, v ...any) {
+	logger := GetLogger(ctx)
+	if !logger.Enabled(ctx, LevelInfo) {
+		return
+	}
+	s.log(logger, ctx, LevelInfo, fmt.Sprintf(format, v...))
+}
+
+func (s slogAdapter) Warnf(ctx context.Context, format string, v ...any) {
+	logger := GetLogger(ctx)
+	if !logger.Enabled(ctx, LevelWarn) {
+		return
+	}
+	s.log(logger, ctx, LevelWarn, fmt.Sprintf(format, v...))
+}
+
+func (s slogAdapter) Errorf(ctx context.Context, format string, v ...any) {
+	logger := GetLogger(ctx)
+	if !logger.Enabled(ctx, LevelError) {
+		return
+	}
+	s.log(logger, ctx, LevelError, fmt.Sprintf(format, v...))
+}
+
+func init() {
+	// Configure SDK to use this logger.
+	sdk.DefaultLogger = slogAdapter{}
+}