From c8ec4170f30985e97be0a60c7bc37f91f8181fda Mon Sep 17 00:00:00 2001
From: Trial97 <alexandru.tripon@itsyscom.com>
Date: Fri, 10 Jan 2020 15:53:30 +0200
Subject: [PATCH] Added back the locks to AsExternalSessions

---
 sessions/session.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sessions/session.go b/sessions/session.go
index 2a0e9b977..582f60b25 100644
--- a/sessions/session.go
+++ b/sessions/session.go
@@ -130,8 +130,9 @@ func (s *Session) Clone() (cln *Session) {
 	return
 }
 
-// AsExternalSessions returns the session as a list of ExternalSession using all SRuns
+// AsExternalSessions returns the session as a list of ExternalSession using all SRuns (thread safe)
 func (s *Session) AsExternalSessions(tmz, nodeID string) (aSs []*ExternalSession) {
+	s.RLock()
 	aSs = make([]*ExternalSession, len(s.SRuns))
 	for i, sr := range s.SRuns {
 		aSs[i] = &ExternalSession{
@@ -165,6 +166,7 @@ func (s *Session) AsExternalSessions(tmz, nodeID string) (aSs []*ExternalSession
 			aSs[i].MaxCostSoFar = sr.CD.MaxCostSoFar
 		}
 	}
+	s.RUnlock()
 	return
 }