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--- userdoc:tt_wan_failover [2019/03/31 17:17]
mknill [PPPoE on Failover Interface]
+++ userdoc:tt_wan_failover [2019/10/13 20:55]
abelbeck
@@ Line 94: / Line 94: @@
   esac
+  exit 0
+===== Action Exit Script (optional) =====
+Conditionally test when a Secondary -> Primary WAN link change occurs, by executing a script.
+If this script has an exit value of 0 the link change occurs, else with any other exit value the failover remains on the Secondary WAN.
+The script must be found at ''/mnt/kd/wan-failover-exit.script'' and be made executable...
+  chmod 755 /mnt/kd/wan-failover-exit.script
+Example: ''/mnt/kd/wan-failover-exit.script''
+  #!/bin/sh
+  ##
+  ## wan-failover-exit action script
+  ##
+  ## Automatically called before any Secondary -> Primary WAN link change
+  ## and the Primary WAN link is reachable.
+  ##
+  ## If this script has an exit value of 0 the link change occurs.
+  ## Else with any other exit value, the failover remains on the Secondary WAN.
+  ##
+  ## Note: Do not 'sleep' in this script, exit promptly.
+  ##
+  state="$1"
+  primary_if="$2"
+  primary_gw="$3"
+  secondary_if="$4"
+  secondary_gw="$5"
+  secondary_gw_ipv6="$6"
+  ## Sanity check, 'state' must be set properly
+  if [ "$state" != "SECONDARY_EXIT" ]; then
+    exit 0
+  fi
+  . /etc/rc.conf
+  ##
+  ## Allow Secondary -> Primary WAN link change ?
+  ##
+  ## Custom user.conf variable, if "yes" failover will not return to the Primary WAN link
+  if [ "$CUSTOM_WAN_FAILOVER_STICKY" = "yes" ]; then
+    exit 1
+  fi
+  ## Check Asterisk active calls, remain on the Secondary WAN link until no active calls
+  active_calls="$(asterisk -rx 'core show channels' | sed -n -r -e 's/^([0-9]+) +active +call.*$/\1/p')"
+  if [ -n "$active_calls" ] && [ $active_calls -gt 0 ]; then
+    exit 1
+  fi
   exit 0