精简后的项目：仅保留 api/ui 源码、文档、构建依赖

api/log/context.go

@@ -0,0 +1,41 @@
+package log
+
+import (
+	"context"
+	"log/slog"
+)
+
+var defaultLogger *slog.Logger
+
+func init() {
+	defaultLogger = slog.Default()
+}
+
+type loggerKeyType string
+
+const loggerKey loggerKeyType = "logger"
+
+func getLogger(ctx context.Context) *slog.Logger {
+	if ctx == nil {
+		return defaultLogger
+	}
+
+	logger := ctx.Value(loggerKey)
+	if logger == nil {
+		return defaultLogger
+	}
+
+	ret, ok := logger.(*slog.Logger)
+	if !ok {
+		return defaultLogger
+	}
+
+	return ret
+}
+
+// WithAttrs creates a new context containing a new logger with [args] as logging attributes.
+func WithAttrs(ctx context.Context, args ...any) context.Context {
+	old := getLogger(ctx)
+	new := old.With(args...)
+	return context.WithValue(ctx, loggerKey, new)
+}