1 files changed, 51 insertions, 0 deletions
diff --git a/internal/server/ctxkeys/ctxkeys.go b/internal/server/ctxkeys/ctxkeys.go
new file mode 100644
index 0000000..c0f688d
--- /dev/null
+++ b/internal/server/ctxkeys/ctxkeys.go
@@ -0,0 +1,51 @@
+package ctxkeys
+
+import (
+	"context"
+	"log/slog"
+
+	"github.com/kyren223/eko/pkg/assert"
+)
+
+type key int
+
+const (
+	UserID key = iota
+	IpAddr
+	KeyMax
+)
+
+var keyNames = map[key]string{
+	UserID: "user_id",
+	IpAddr: "ip_addr",
+}
+
+func Init() {
+	assert.Assert(len(keyNames) == int(KeyMax), "Keys in keyNames mismatch amount of keys", "len(keyNames)", len(keyNames), "KeyMax", int(KeyMax))
+}
+
+func WithValue(ctx context.Context, k key, v any) context.Context {
+	return context.WithValue(ctx, k, v)
+}
+
+func Value(ctx context.Context, k key) any {
+	return ctx.Value(k)
+}
+
+type ContextHandler struct {
+	slog.Handler
+}
+
+func WrapLogHandler(baseHandler slog.Handler) *ContextHandler {
+	return &ContextHandler{Handler: baseHandler}
+}
+
+func (h *ContextHandler) Handle(ctx context.Context, r slog.Record) error {
+	for k := key(0); k < KeyMax; k++ {
+		if v := Value(ctx, k); v != nil {
+			r.AddAttrs(slog.Any(keyNames[k], v))
+		}
+	}
+
+	return h.Handler.Handle(ctx, r)
+}