Add MapOmit, Context Parse/Serialize

context.go

@@ -0,0 +1,26 @@
+package commons
+
+import "context"
+
+func ContextSerialize(ctx context.Context, fields []string) map[string]any {
+	m := map[string]any{}
+	for _, name := range fields {
+		vAny := ctx.Value(name)
+		v, ok := vAny.(string)
+		if ok {
+			m[name] = v
+		}
+	}
+
+	return m
+}
+
+func ContextFromMap(m map[string]any) context.Context {
+	ctx := context.Background()
+
+	for k, v := range m {
+		ctx = context.WithValue(ctx, k, v)
+	}
+
+	return ctx
+}