From 35f24627f0c0ee9113afa49a1ab106d72875e3be Mon Sep 17 00:00:00 2001
From: aarifullin <aarifullin@yadro.com>
Date: Tue, 31 Oct 2023 01:52:04 +0300
Subject: [PATCH] [#13] chain: Introduce ChainID type

Signed-off-by: aarifullin <aarifullin@yadro.com>
---
 chain.go    | 5 +++++
 inmemory.go | 9 ++++++---
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/chain.go b/chain.go
index 08779a7..922f5d8 100644
--- a/chain.go
+++ b/chain.go
@@ -13,7 +13,12 @@ type Engine interface {
 	IsAllowed(name Name, namespace string, r Request) (Status, bool)
 }
 
+// ChainID is the ID of rule chain.
+type ChainID string
+
 type Chain struct {
+	ID ChainID
+
 	Rules []Rule
 }
 
diff --git a/inmemory.go b/inmemory.go
index ca1055f..4351489 100644
--- a/inmemory.go
+++ b/inmemory.go
@@ -1,9 +1,12 @@
 package policyengine
 
+import "sync/atomic"
+
 type inmemory struct {
-	namespace map[Name][]chain
-	resource  map[Name][]chain
-	local     map[Name][]*Chain
+	chainCounter atomic.Uint32
+	namespace    map[Name][]chain
+	resource     map[Name][]chain
+	local        map[Name][]*Chain
 }
 
 type chain struct {