nickva commented on code in PR #5601:
URL: https://github.com/apache/couchdb/pull/5601#discussion_r2216377711
##########
src/nouveau/src/nouveau_gun.erl:
##########
@@ -36,20 +36,32 @@
-define(NOUVEAU_HOST_HEADER, nouveau_host_header).
+-record(state, {
+ enabled,
+ url
+}).
+
start_link() ->
gen_server:start_link({local, ?MODULE}, ?MODULE, [], []).
host_header() ->
persistent_term:get(?NOUVEAU_HOST_HEADER).
init(_) ->
+ Enabled = nouveau:enabled(),
URL = nouveau_util:nouveau_url(),
- case start_gun(URL) of
- {ok, _PoolPid} ->
- ok = config:listen_for_changes(?MODULE, URL),
- {ok, nil};
- {error, Reason} ->
- {error, Reason}
+ State = #state{enabled = Enabled, url = URL},
+ ok = config:listen_for_changes(?MODULE, State),
+ if
+ Enabled ->
+ case start_gun(URL) of
+ {ok, _PoolPid} ->
+ {ok, nil};
+ {error, Reason} ->
+ {error, Reason}
+ end;
+ true ->
+ {ok, nil}
Review Comment:
Since we have to run basically the same logic in init and on reconfigure
maybe just have a single maybe_start() or reconfigure() function that keeps
track of the started `Url` and on reconfigure we check:
```erlang
case {Enabled, StartedUrl} of
{true, undefined} -> start(), set StartedUrl = Url;
{true, StartedUrl != Url, Url!=undefined} -> stop(), start(), set
StartedUrl = Url;
{false, StartedUrl != undefined} -> stop(), set StartedUrl = undefined;
{true, Url = StartedUrl} -> ok;
{false, _} ok
}
```
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: notifications-unsubscr...@couchdb.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
