From fa41e9c46c7b8fe6b0bda0a9584df9736f64a33a Mon Sep 17 00:00:00 2001
From: Martin Holst Swende <martin@swende.se>
Date: Thu, 8 Oct 2020 17:49:36 +0200
Subject: [PATCH] pkg/scope: add mutexes around scope (#33)

---
 pkg/scope/scope.go | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/pkg/scope/scope.go b/pkg/scope/scope.go
index 84c31b1..585349e 100644
--- a/pkg/scope/scope.go
+++ b/pkg/scope/scope.go
@@ -7,7 +7,7 @@ import (
 )
 
 type Scope struct {
-	mu    sync.Mutex
+	mu    sync.RWMutex
 	rules []Rule
 }
 
@@ -31,6 +31,8 @@ func New(rules []Rule) *Scope {
 }
 
 func (s *Scope) Rules() []Rule {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
 	return s.rules
 }
 
@@ -42,7 +44,8 @@ func (s *Scope) SetRules(rules []Rule) {
 }
 
 func (s *Scope) Match(req *http.Request, body []byte) bool {
-	// TODO(?): Do we need to lock here as well?
+	s.mu.RLock()
+	defer s.mu.RUnlock()
 	for _, rule := range s.rules {
 		if matches := rule.Match(req, body); matches {
 			return true