From a9a20c915026261c5fd05ddfbc8a3e2fda60cbc9 Mon Sep 17 00:00:00 2001
From: Martin Sumner <martin.sumner@adaptip.co.uk>
Date: Wed, 7 Mar 2018 16:20:41 +0000
Subject: [PATCH] Smoother temrinate on destroy

don't try and terminate a dead process
---
 src/leveled_bookie.erl | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/src/leveled_bookie.erl b/src/leveled_bookie.erl
index 85cc57d..19866ec 100644
--- a/src/leveled_bookie.erl
+++ b/src/leveled_bookie.erl
@@ -747,8 +747,20 @@ handle_info(_Info, State) ->
 
 terminate(Reason, State) ->
     leveled_log:log("B0003", [Reason]),
-    ok = leveled_inker:ink_close(State#state.inker),
-    ok = leveled_penciller:pcl_close(State#state.penciller).
+    ok = 
+        case is_process_alive(State#state.inker) of 
+            true ->
+                leveled_inker:ink_close(State#state.inker);
+            false ->
+                ok 
+        end,
+    ok =
+        case is_process_alive(State#state.penciller) of 
+            true ->
+                leveled_penciller:pcl_close(State#state.penciller);
+            false ->
+                ok 
+        end.
 
 code_change(_OldVsn, State, _Extra) ->
     {ok, State}.