add setting for how to long we should keep expired tokens

conf/defaults.ini

@@ -110,18 +110,21 @@ cache_mode = private
 
 [login]
 
-# login cookie name
+# Login cookie name
 cookie_name = grafana_session
 
 # If you want login cookies to be https only. default is false
 cookie_secure = false
 
-# logged in user name
+# Logged in user name
 cookie_username = grafana_user
 
-# how many days an session can be unused before we inactivate it
+# How many days an session can be unused before we inactivate it
 login_remember_days = 7
 
+# How long should Grafana keep expired tokens before deleting them
+delete_expired_token_after_days = 30
+
 #################################### Session #############################
 [session]
 # Either "memory", "file", "redis", "mysql", "postgres", "memcache", default is "file"

pkg/services/auth/session_cleanup.go

@@ -7,7 +7,7 @@ import (
 
 func (srv *UserAuthTokenServiceImpl) Run(ctx context.Context) error {
 	ticker := time.NewTicker(time.Hour * 12)
-	deleteSessionAfter := time.Hour * 24 * 7 * 30
+	deleteSessionAfter := time.Hour * 24 * time.Duration(srv.Cfg.LoginDeleteExpiredTokensAfterDays)
 
 	for {
 		select {

pkg/setting/setting.go

@@ -228,6 +228,7 @@ type Cfg struct {
 	LoginCookieUsername               string
 	LoginCookieSecure                 bool
 	LoginCookieMaxDays                int
+	LoginDeleteExpiredTokensAfterDays int
 }
 
 type CommandLineArgs struct {
@@ -553,10 +554,11 @@ func (cfg *Cfg) Load(args *CommandLineArgs) error {
 
 	//login
 	login := iniFile.Section("login")
-	cfg.LoginCookieName = login.Key("cookie_name").String()
-	cfg.LoginCookieMaxDays = login.Key("login_remember_days").MustInt()
+	cfg.LoginCookieName = login.Key("cookie_name").MustString("grafana_session")
+	cfg.LoginCookieMaxDays = login.Key("login_remember_days").MustInt(7)
 	cfg.LoginCookieSecure = login.Key("cookie_secure").MustBool(false)
-	cfg.LoginCookieUsername = login.Key("cookie_username").String()
+	cfg.LoginCookieUsername = login.Key("cookie_username").MustString("grafana_username")
+	cfg.LoginDeleteExpiredTokensAfterDays = login.Key("delete_expired_token_after_days").MustInt(30)
 
 	Env = iniFile.Section("").Key("app_mode").MustString("development")
 	InstanceName = iniFile.Section("").Key("instance_name").MustString("unknown_instance_name")