From c434e84114ef14b7a53ad25c658aaf5156f6d949 Mon Sep 17 00:00:00 2001
From: Christopher Speller <crspeller@gmail.com>
Date: Thu, 22 Dec 2016 07:52:02 -0500
Subject: Adding session cache directly to web-conn (#4861)

---
 api/context.go  |  2 ++
 api/post.go     |  6 +++---
 api/web_conn.go | 35 +++++++++++++++++++++++------------
 api/web_hub.go  |  6 ++++++
 4 files changed, 34 insertions(+), 15 deletions(-)

diff --git a/api/context.go b/api/context.go
index 765bb502a..7f95fdfbc 100644
--- a/api/context.go
+++ b/api/context.go
@@ -566,6 +566,8 @@ func RemoveAllSessionsForUserIdSkipClusterSend(userId string) {
 		}
 	}
 
+	InvalidateWebConnSessionCacheForUser(userId)
+
 }
 
 func AddSessionToCache(session *model.Session) {
diff --git a/api/post.go b/api/post.go
index 00cf21dda..ff3c1e510 100644
--- a/api/post.go
+++ b/api/post.go
@@ -705,7 +705,7 @@ func sendNotifications(c *Context, post *model.Post, team *model.Team, channel *
 			}
 
 			if userAllowsEmails && status.Status != model.STATUS_ONLINE {
-				go sendNotificationEmail(c, post, profileMap[id], channel, team, senderName[id], sender)
+				sendNotificationEmail(c, post, profileMap[id], channel, team, senderName[id], sender)
 			}
 		}
 	}
@@ -801,7 +801,7 @@ func sendNotifications(c *Context, post *model.Post, team *model.Team, channel *
 			}
 
 			if DoesStatusAllowPushNotification(profileMap[id], status, post.ChannelId) {
-				go sendPushNotification(post, profileMap[id], channel, senderName[id], true)
+				sendPushNotification(post, profileMap[id], channel, senderName[id], true)
 			}
 		}
 
@@ -814,7 +814,7 @@ func sendNotifications(c *Context, post *model.Post, team *model.Team, channel *
 				}
 
 				if DoesStatusAllowPushNotification(profileMap[id], status, post.ChannelId) {
-					go sendPushNotification(post, profileMap[id], channel, senderName[id], false)
+					sendPushNotification(post, profileMap[id], channel, senderName[id], false)
 				}
 			}
 		}
diff --git a/api/web_conn.go b/api/web_conn.go
index a2b801904..3b991d449 100644
--- a/api/web_conn.go
+++ b/api/web_conn.go
@@ -27,6 +27,7 @@ type WebConn struct {
 	WebSocket                 *websocket.Conn
 	Send                      chan model.WebSocketMessage
 	SessionToken              string
+	SessionExpiresAt          int64
 	UserId                    string
 	T                         goi18n.TranslateFunc
 	Locale                    string
@@ -40,12 +41,13 @@ func NewWebConn(c *Context, ws *websocket.Conn) *WebConn {
 	}
 
 	return &WebConn{
-		Send:         make(chan model.WebSocketMessage, 256),
-		WebSocket:    ws,
-		UserId:       c.Session.UserId,
-		SessionToken: c.Session.Token,
-		T:            c.T,
-		Locale:       c.Locale,
+		Send:             make(chan model.WebSocketMessage, 256),
+		WebSocket:        ws,
+		UserId:           c.Session.UserId,
+		SessionToken:     c.Session.Token,
+		SessionExpiresAt: c.Session.ExpiresAt,
+		T:                c.T,
+		Locale:           c.Locale,
 	}
 }
 
@@ -144,16 +146,25 @@ func (c *WebConn) writePump() {
 func (webCon *WebConn) InvalidateCache() {
 	webCon.AllChannelMembers = nil
 	webCon.LastAllChannelMembersTime = 0
+	webCon.SessionExpiresAt = 0
 }
 
 func (webCon *WebConn) isAuthenticated() bool {
-	if webCon.SessionToken == "" {
-		return false
-	}
+	// Check the expiry to see if we need to check for a new session
+	if webCon.SessionExpiresAt < model.GetMillis() {
+		if webCon.SessionToken == "" {
+			return false
+		}
 
-	session := GetSession(webCon.SessionToken)
-	if session == nil || session.IsExpired() {
-		return false
+		session := GetSession(webCon.SessionToken)
+		if session == nil || session.IsExpired() {
+			webCon.SessionToken = ""
+			webCon.SessionExpiresAt = 0
+			return false
+		}
+
+		webCon.SessionToken = session.Token
+		webCon.SessionExpiresAt = session.ExpiresAt
 	}
 
 	return true
diff --git a/api/web_hub.go b/api/web_hub.go
index 107491434..64903ea59 100644
--- a/api/web_hub.go
+++ b/api/web_hub.go
@@ -145,6 +145,12 @@ func InvalidateCacheForUserSkipClusterSend(userId string) {
 	}
 }
 
+func InvalidateWebConnSessionCacheForUser(userId string) {
+	if len(hubs) != 0 {
+		GetHubForUserId(userId).InvalidateUser(userId)
+	}
+}
+
 func (h *Hub) Register(webConn *WebConn) {
 	h.register <- webConn
 
-- 
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