Chapril/xmpp.chapril.org-ejabberd
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Make connection close errors bubble up from inside sql transaction

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This commit is contained in:
Paweł Chmielowski 2022-07-28 13:17:35 +02:00
parent 1ea53bf940
commit 3d329c7e8f
1 changed files with 50 additions and 22 deletions
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72
src/ejabberd_sql.erl
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@ -479,6 +479,12 @@ handle_reconnect(Reason, #state{host = Host, reconnect_count = RC} = State) ->
"** Retry after: ~B seconds",
[State#state.db_type, Reason,
StartInterval div 1000]),
case State#state.db_type of
mysql -> catch p1_mysql_conn:stop(State#state.db_ref);
sqlite -> catch sqlite3:close(sqlite_db(State#state.host));
pgsql -> catch pgsql:terminate(State#state.db_ref);
_ -> ok
end,
p1_fsm:send_event_after(StartInterval, connect),
{next_state, connecting, State#state{reconnect_count = RC + 1}}.
@ -562,9 +568,7 @@ outer_transaction(F, NRestarts, _Reason) ->
{atomic, Res}
catch
?EX_RULE(throw, {aborted, Reason}, _) when NRestarts > 0 ->
sql_rollback(),
put(?NESTING_KEY, ?TOP_LEVEL_TXN),
outer_transaction(F, NRestarts - 1, Reason);
rollback_transaction(F, NRestarts, Reason);
?EX_RULE(throw, {aborted, Reason}, Stack) when NRestarts =:= 0 ->
StackTrace = ?EX_STACK(Stack),
?ERROR_MSG("SQL transaction restarts exceeded~n** "
@ -573,11 +577,36 @@ outer_transaction(F, NRestarts, _Reason) ->
"== ~p",
[?MAX_TRANSACTION_RESTARTS, Reason,
StackTrace, get(?STATE_KEY)]),
sql_rollback(),
{aborted, Reason};
rollback_transaction(F, NRestarts, Reason);
?EX_RULE(exit, Reason, _) ->
sql_rollback(),
{aborted, Reason}
rollback_transaction(F, 0, Reason)
end.
rollback_transaction(F, NRestarts, Reason) ->
Res = case driver_restart_required(Reason) of
true ->
{aborted, Reason};
_ ->
case sql_rollback() of
{Tag, Reason2} when Tag == error; Tag == aborted ->
case driver_restart_required(Reason2) of
true ->
{aborted, Reason2};
_ ->
continue
end;
_ ->
continue
end
end,
case Res of
continue when NRestarts > 0 ->
put(?NESTING_KEY, ?TOP_LEVEL_TXN),
outer_transaction(F, NRestarts - 1, Reason);
continue ->
{aborted, Reason};
Other ->
Other
end.
execute_bloc(F) ->
@ -865,23 +894,22 @@ sql_rollback() ->
[{mssql, [<<"rollback transaction;">>]},
{any, [<<"rollback;">>]}]).
driver_restart_required(<<"query timed out">>) -> true;
driver_restart_required(<<"connection closed">>) -> true;
driver_restart_required(<<"Failed sending data on socket", _/binary>>) -> true;
driver_restart_required(<<"SQL connection failed">>) -> true;
driver_restart_required(<<"Communication link failure">>) -> true;
driver_restart_required(_) -> false.
%% Generate the OTP callback return tuple depending on the driver result.
abort_on_driver_error({error, <<"query timed out">>} = Reply, From, Timestamp) ->
abort_on_driver_error({Tag, Msg} = Reply, From, Timestamp) when Tag == error; Tag == aborted ->
reply(From, Reply, Timestamp),
{stop, timeout, get(?STATE_KEY)};
abort_on_driver_error({error, <<"connection closed">>} = Reply, From, Timestamp) ->
reply(From, Reply, Timestamp),
handle_reconnect(<<"connection closed">>, get(?STATE_KEY));
abort_on_driver_error({error, <<"Failed sending data on socket", _/binary>>} = Reply,
From, Timestamp) ->
reply(From, Reply, Timestamp),
{stop, closed, get(?STATE_KEY)};
abort_on_driver_error({error, <<"SQL connection failed">>} = Reply, From, Timestamp) ->
reply(From, Reply, Timestamp),
{stop, timeout, get(?STATE_KEY)};
abort_on_driver_error({error, <<"Communication link failure">>} = Reply, From, Timestamp) ->
reply(From, Reply, Timestamp),
{stop, closed, get(?STATE_KEY)};
case driver_restart_required(Msg) of
true ->
handle_reconnect(Msg, get(?STATE_KEY));
_ ->
{next_state, session_established, get(?STATE_KEY)}
end;
abort_on_driver_error(Reply, From, Timestamp) ->
reply(From, Reply, Timestamp),
{next_state, session_established, get(?STATE_KEY)}.