51 lines
1.4 KiB
Go
51 lines
1.4 KiB
Go
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// Copied from https://pkg.go.dev/log/slog#Handler
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package log
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import (
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"context"
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"log/slog"
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)
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// A LevelHandler wraps a Handler with an Enabled method
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// that returns false for levels below a minimum.
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type LevelHandler struct {
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level slog.Leveler
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handler slog.Handler
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}
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// NewLevelHandler returns a LevelHandler with the given level.
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// All methods except Enabled delegate to h.
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func NewLevelHandler(level slog.Leveler, h slog.Handler) *LevelHandler {
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// Optimization: avoid chains of LevelHandlers.
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if lh, ok := h.(*LevelHandler); ok {
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h = lh.Handler()
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}
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return &LevelHandler{level, h}
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}
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// Enabled implements Handler.Enabled by reporting whether
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// level is at least as large as h's level.
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func (h *LevelHandler) Enabled(_ context.Context, level slog.Level) bool {
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return level >= h.level.Level()
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}
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// Handle implements Handler.Handle.
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func (h *LevelHandler) Handle(ctx context.Context, r slog.Record) error {
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return h.handler.Handle(ctx, r)
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}
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// WithAttrs implements Handler.WithAttrs.
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func (h *LevelHandler) WithAttrs(attrs []slog.Attr) slog.Handler {
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return NewLevelHandler(h.level, h.handler.WithAttrs(attrs))
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}
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// WithGroup implements Handler.WithGroup.
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func (h *LevelHandler) WithGroup(name string) slog.Handler {
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return NewLevelHandler(h.level, h.handler.WithGroup(name))
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}
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// Handler returns the Handler wrapped by h.
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func (h *LevelHandler) Handler() slog.Handler {
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return h.handler
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}
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