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Diffstat (limited to 'src/ejabberd_router_sql.erl')
-rw-r--r-- | src/ejabberd_router_sql.erl | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/src/ejabberd_router_sql.erl b/src/ejabberd_router_sql.erl new file mode 100644 index 000000000..e18857a05 --- /dev/null +++ b/src/ejabberd_router_sql.erl @@ -0,0 +1,133 @@ +%%%------------------------------------------------------------------- +%%% @author Evgeny Khramtsov <ekhramtsov@process-one.net> +%%% Created : 28 Mar 2017 by Evgeny Khramtsov <ekhramtsov@process-one.net> +%%% +%%% +%%% ejabberd, Copyright (C) 2002-2019 ProcessOne +%%% +%%% This program is free software; you can redistribute it and/or +%%% modify it under the terms of the GNU General Public License as +%%% published by the Free Software Foundation; either version 2 of the +%%% License, or (at your option) any later version. +%%% +%%% This program is distributed in the hope that it will be useful, +%%% but WITHOUT ANY WARRANTY; without even the implied warranty of +%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +%%% General Public License for more details. +%%% +%%% You should have received a copy of the GNU General Public License along +%%% with this program; if not, write to the Free Software Foundation, Inc., +%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +%%% +%%%------------------------------------------------------------------- +-module(ejabberd_router_sql). +-behaviour(ejabberd_router). + + +%% API +-export([init/0, register_route/5, unregister_route/3, find_routes/1, + get_all_routes/0]). + +-include("logger.hrl"). +-include("ejabberd_sql_pt.hrl"). +-include("ejabberd_router.hrl"). +-include("ejabberd_stacktrace.hrl"). + +%%%=================================================================== +%%% API +%%%=================================================================== +init() -> + Node = erlang:atom_to_binary(node(), latin1), + ?DEBUG("Cleaning SQL 'route' table...", []), + case ejabberd_sql:sql_query( + ejabberd_config:get_myname(), ?SQL("delete from route where node=%(Node)s")) of + {updated, _} -> + ok; + Err -> + ?ERROR_MSG("Failed to clean 'route' table: ~p", [Err]), + Err + end. + +register_route(Domain, ServerHost, LocalHint, _, Pid) -> + PidS = misc:encode_pid(Pid), + LocalHintS = enc_local_hint(LocalHint), + Node = erlang:atom_to_binary(node(Pid), latin1), + case ?SQL_UPSERT(ejabberd_config:get_myname(), "route", + ["!domain=%(Domain)s", + "!server_host=%(ServerHost)s", + "!node=%(Node)s", + "!pid=%(PidS)s", + "local_hint=%(LocalHintS)s"]) of + ok -> + ok; + _ -> + {error, db_failure} + end. + +unregister_route(Domain, _, Pid) -> + PidS = misc:encode_pid(Pid), + Node = erlang:atom_to_binary(node(Pid), latin1), + case ejabberd_sql:sql_query( + ejabberd_config:get_myname(), + ?SQL("delete from route where domain=%(Domain)s " + "and pid=%(PidS)s and node=%(Node)s")) of + {updated, _} -> + ok; + _ -> + {error, db_failure} + end. + +find_routes(Domain) -> + case ejabberd_sql:sql_query( + ejabberd_config:get_myname(), + ?SQL("select @(server_host)s, @(node)s, @(pid)s, @(local_hint)s " + "from route where domain=%(Domain)s")) of + {selected, Rows} -> + {ok, lists:flatmap( + fun(Row) -> + row_to_route(Domain, Row) + end, Rows)}; + _ -> + {error, db_failure} + end. + +get_all_routes() -> + case ejabberd_sql:sql_query( + ejabberd_config:get_myname(), + ?SQL("select @(domain)s from route where domain <> server_host")) of + {selected, Domains} -> + {ok, [Domain || {Domain} <- Domains]}; + _ -> + {error, db_failure} + end. + +%%%=================================================================== +%%% Internal functions +%%%=================================================================== +enc_local_hint(undefined) -> + <<"">>; +enc_local_hint(LocalHint) -> + misc:term_to_expr(LocalHint). + +dec_local_hint(<<"">>) -> + undefined; +dec_local_hint(S) -> + ejabberd_sql:decode_term(S). + +row_to_route(Domain, {ServerHost, NodeS, PidS, LocalHintS} = Row) -> + try [#route{domain = Domain, + server_host = ServerHost, + pid = misc:decode_pid(PidS, NodeS), + local_hint = dec_local_hint(LocalHintS)}] + catch _:{bad_node, _} -> + []; + ?EX_RULE(Class, Reason, St) -> + StackTrace = ?EX_STACK(St), + ?ERROR_MSG("Failed to decode row from 'route' table:~n" + "** Row = ~p~n" + "** Domain = ~ts~n" + "** ~ts", + [Row, Domain, + misc:format_exception(2, Class, Reason, StackTrace)]), + [] + end. |