From eb18a1f737fc6bbb559998e12ad710981cab0249 Mon Sep 17 00:00:00 2001
From: Leonid Bugaev <leonsbox@gmail.com>
Date: Tue, 24 Sep 2019 12:22:30 +0300
Subject: [PATCH] Make key level tags in order and unique (#2475)

Fixes TykTechnologies/tyk-analytics#1413

FE task: TykTechnologies/tyk-analytics-ui#1082

(cherry picked from commit f2f74d9)
---
 middleware.go | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/middleware.go b/middleware.go
index e2732dee49a..e4b7c6e5ae2 100644
--- a/middleware.go
+++ b/middleware.go
@@ -421,11 +421,13 @@ func (t BaseMiddleware) ApplyPolicies(session *user.SessionState) error {
 		}
 	}
 
-	// set tags
-	if len(tags) > 0 {
-		for tag := range tags {
-			session.Tags = append(session.Tags, tag)
-		}
+	for _, tag := range session.Tags {
+		tags[tag] = true
+	}
+
+	session.Tags = []string{}
+	for tag, _ := range tags {
+		session.Tags = append(session.Tags, tag)
 	}
 
 	session.AccessRights = rights