type Option struct {
    // log level (default: debug)
    Level slog.Leveler

    // parquet rows buffer
    Buffer slogparquet.ParquetBuffer

    // optional: customize json payload builder
    Converter Converter
    // optional: fetch attributes from context
    AttrFromContext []func(ctx context.Context) []slog.Attr

    // optional: see slog.HandlerOptions
    AddSource   bool
    ReplaceAttr func(groups []string, a slog.Attr) slog.Attr
}

slogparquet.SourceKey = "source"
slogparquet.ErrorKeys = []string{"error", "err"}

func NewParquetBuffer(bucket objstore.Bucket, prefix string, maxRecords int, maxInterval time.Duration) slogparquet.ParquetBuffer

import (
    "log/slog"

    slogparquet "github.com/samber/slog-parquet/v2"
    "github.com/thanos-io/objstore/providers/s3"
)

func main() {
    bucket, _ := s3.NewBucketWithConfig(
        slogparquet.NewLogger(),
        s3.Config{
            Endpoint:  os.Getenv("AWS_S3_ENDPOINT"),
            Region:    os.Getenv("AWS_S3_REGION"),
            Bucket:    os.Getenv("AWS_S3_BUCKET"),
            AccessKey: os.Getenv("AWS_ACCESS_KEY"),
            SecretKey: os.Getenv("AWS_SECRET_KEY"),
            PartSize:  16 * 1024 * 1024, // 16MB
        },
        "logger",
    )

    buffer := slogparquet.NewParquetBuffer(bucket, "api/logs", 10*1024*1024)

    logger := slog.New(slogparquet.Option{Level: slog.LevelDebug, Buffer: buffer}.NewParquetHandler())
    logger = logger.
        With("environment", "dev").
        With("release", "v1.0.0")

    // log error
    logger.
        With("category", "sql").
        With("query.statement", "SELECT COUNT(*) FROM users;").
        With("query.duration", 1*time.Second).
        With("error", fmt.Errorf("could not count users")).
        Error("caramba!")

    // log user signup
    logger.
        With(
            slog.Group("user",
                slog.String("id", "user-123"),
                slog.Time("created_at", time.Now()),
            ),
        ).
        Info("user registration")

    buffer.Flush(true)
    bucket.Close()
}

import (
	slogparquet "github.com/samber/slog-parquet"
	slogotel "github.com/samber/slog-otel"
	"go.opentelemetry.io/otel/sdk/trace"
)

func main() {
	tp := trace.NewTracerProvider(
		trace.WithSampler(trace.AlwaysSample()),
	)
	tracer := tp.Tracer("hello/world")

	ctx, span := tracer.Start(context.Background(), "foo")
	defer span.End()

	span.AddEvent("bar")

	logger := slog.New(
		slogparquet.Option{
			// ...
			AttrFromContext: []func(ctx context.Context) []slog.Attr{
				slogotel.ExtractOtelAttrFromContext([]string{"tracing"}, "trace_id", "span_id"),
			},
		}.NewParquetHandler(),
	)

	logger.ErrorContext(ctx, "a message")
}