rnewson commented on a change in pull request #3764:
URL: https://github.com/apache/couchdb/pull/3764#discussion_r715668111
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File path: src/chttpd/src/chttpd_changes.erl
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@@ -604,31 +605,49 @@ keep_sending_changes(Args, Acc0, FirstRound) ->
true ->
case wait_updated(Timeout, TimeoutFun, UserAcc3) of
{updated, UserAcc4} ->
- UserCtx = fabric2_db:get_user_ctx(Db),
- DbOptions1 = [{user_ctx, UserCtx} | DbOptions],
- case fabric2_db:open(fabric2_db:name(Db),
DbOptions1) of
- {ok, Db2} ->
- ?MODULE:keep_sending_changes(
- Args#changes_args{limit = NewLimit},
- ChangesAcc#changes_acc{
- db = Db2,
- user_acc = UserAcc4,
- seq = EndSeq,
- prepend = Prepend2,
- timeout = Timeout,
- timeout_fun = TimeoutFun
- },
- false
- );
- _Else ->
- end_sending_changes(Callback, UserAcc3,
EndSeq)
+ AccumulatedTime = timer:now_diff(os:timestamp(),
T0) div 1000,
+ Max = changes_duration(),
+ case AccumulatedTime > Max of
+ true ->
+ end_sending_changes(Callback, UserAcc4,
EndSeq);
+ false ->
+ UserCtx = fabric2_db:get_user_ctx(Db),
+ DbOptions1 = [{user_ctx, UserCtx} |
DbOptions],
+ case fabric2_db:open(fabric2_db:name(Db),
DbOptions1) of
+ {ok, Db2} ->
+ ?MODULE:keep_sending_changes(
+ Args#changes_args{limit =
NewLimit},
+ ChangesAcc#changes_acc{
+ db = Db2,
+ user_acc = UserAcc4,
+ seq = EndSeq,
+ prepend = Prepend2,
+ timeout = Timeout,
+ timeout_fun = TimeoutFun
+ },
+ false,
+ T0
+ );
+ _Else ->
+ end_sending_changes(Callback,
UserAcc3, EndSeq)
+ end
end;
{stop, UserAcc4} ->
end_sending_changes(Callback, UserAcc4, EndSeq)
end
end
end.
+
+changes_duration() ->
+ %% preserving original (3.x) configuration segment;
+ case config:get("fabric", "changes_duration") of
+ undefined ->
+ infinity;
Review comment:
this is how it works on 3.x. If you want to impose a duration you set a
numeric value. If you do not want to impose a duration you delete the entry
(config:delete or `changes_duration =`).
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