Added error reason specific logging to hello_registry.

doc/logging.md

@@ -197,8 +197,10 @@
 #### 5600
 
 * ___Messages___:
-  * [bb0ea6d2b9c74a78afa724889ceee0b5] Hello registry received @EXIT@ signal from monitored process @PID@ with reason @REASON@.
-  * [da5cd3be4435462dafff47b1bbc34a62] Hello registry received @EXIT@ signal from monitored process @PID@ with reason @REASON@. Going to clean up associated processes @PIDS@.
+  * [aca4e83479364c4cb779bcc2be1a810b] Hello registry : Received @EXIT@ from process @PID@ with reason @REASON@.
+  * [bb0ea6d2b9c74a78afa724889ceee0b5] Hello registry : Received @EXIT@ from process @PID@ with reason 'normal'.
+  * [d8f19a4f217f4a2f958f4bc3ddffaa0d] Hello registry : Received @EXIT@ from process @PID@ with reason 'normal'.
+  * [da5cd3be4435462dafff47b1bbc34a62] Hello registry : Received @EXIT@ from process @PID@ with reason @REASON@. Cleaning up associated processes @PIDS@.
   * [ab5f921ed6e7488293241dc27eaf102e] Hello registry attempted to register process @PID@ with key @KEY@, but process is not alive.
 * ___Explanation___: Hello registry noticed problems in registering or monitoring processes.
 * ___Level___: info

include/hello_log_ids.hrl

@@ -76,6 +76,8 @@
 -define(LOGID55, {ab5f921ed6e7488293241dc27eaf102e, 5600}).
 -define(LOGID56, {b5886b31a45d422bb02422aaf072797b, 5500}).
 -define(LOGID57, {af5e3e79776642e4851709b58e7ea790, 2400}).
+-define(LOGID65, {d8f19a4f217f4a2f958f4bc3ddffaa0d, 5600}).
+-define(LOGID66, {aca4e83479364c4cb779bcc2be1a810b, 5600}).
 
 %MESSAGE IDs and SATUS CODEs for hello_service
 -define(LOGID58, {eda0efbe7f6d490490e00ae4055629d2, 5400}).

src/hello_registry.erl

@@ -115,14 +115,24 @@ handle_call({unregister, Key}, _From, Table) ->
 handle_call(_Call, _From, State) ->
     {reply, {error, unknown_call}, State}.
 
+handle_info({'EXIT', From, normal}, Table) ->
+    ?LOG_DEBUG("Hello registry : Received 'EXIT' from process ~p with reason 'normal'.", [From],
+               [{hello_error_reason, {process_exit, normal}}], ?LOGID51),
+    {noreply, Table};
 handle_info({'EXIT', From, Reason}, Table) ->
-    ?LOG_ERROR("Hello registry : Received 'EXIT' signal from monitored process ~p with reason ~p.", [From, Reason],
-               [{hello_error_reason, {process_exit, Reason}}], ?LOGID51),
+    ?LOG_ERROR("Hello registry : Received 'EXIT' from process ~p with reason ~p.", [From, Reason],
+               [{hello_error_reason, {process_exit, Reason}}], ?LOGID66),
     {noreply, Table};
 handle_info({'DOWN', _MRef, process, Pid, Reason}, Table) ->
     Objects = ets:match(Table, {'$1', Pid, '_', '_'}),
-    ?LOG_ERROR("Hello registry : Received 'DOWN' signal from monitored process ~p with reason ~p. Going to clean up associated processes ~p.", 
-               [Pid, Reason, Objects], [{hello_error_reason, {process_down, Objects, Reason}}], ?LOGID52),
+    case Reason of
+        normal ->
+            ?LOG_DEBUG("Hello registry : Received 'DOWN' from process ~p with reason 'normal'.",
+                       [Pid], [{hello_error_reason, {process_down, Objects, Reason}}], ?LOGID65);
+        _      ->
+            ?LOG_ERROR("Hello registry : Received 'DOWN' from process ~p with reason ~p. Cleaning up associated processes ~p.",
+                       [Pid, Reason, Objects], [{hello_error_reason, {process_down, Objects, Reason}}], ?LOGID52)
+    end,
     spawn(fun() -> [down(Object)|| Object <- Objects] end),
     {noreply, Table};
 handle_info({dnssd, _Ref, Msg}, State) ->