rnewson commented on code in PR #5145:
URL: https://github.com/apache/couchdb/pull/5145#discussion_r1686875081
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src/chttpd/src/chttpd_node.erl:
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@@ -405,18 +405,29 @@ get_distribution_stats() ->
message_queues() ->
MessageQueuesAgg = [
{couch_server, couch_server:aggregate_queue_len()},
- {index_server, couch_index_server:aggregate_queue_len()}
+ {index_server, couch_index_server:aggregate_queue_len()},
+ {rexi_server, rexi:aggregate_server_queue_len()},
+ {rexi_buffer, rexi:aggregate_buffer_queue_len()}
],
- MessageQueuesReg = lists:map(
- fun(Name) ->
- Type = message_queue_len,
- {Type, Length} = process_info(whereis(Name), Type),
- {Name, Length}
- end,
- registered()
- ),
+ MessageQueuesReg = lists:filtermap(fun message_queue/1, registered()),
MessageQueuesAgg ++ MessageQueuesReg.
+message_queue(rexi_server) ->
+ % Compatibility clause. Remove in 3.4+ version when singleton
+ % rexi_server is removed.
+ false;
+message_queue(Name) ->
+ Pid = whereis(Name),
+ case is_pid(Pid) of
+ true ->
+ case process_info(Pid, message_queue_len) of
+ {message_queue_len, Length} -> {true, {Name, Length}};
+ _ -> false
Review Comment:
similar for is_pid which returns either pid() or `undefined`
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