mirror of
https://github.com/processone/ejabberd.git
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102 lines
3.2 KiB
Erlang
102 lines
3.2 KiB
Erlang
%%%----------------------------------------------------------------------
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%%% File : ejabberd_rdbms.erl
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%%% Author : Mickael Remond <mickael.remond@process-one.net>
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%%% Purpose : Manage the start of the database modules when needed
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%%% Created : 31 Jan 2003 by Alexey Shchepin <alexey@process-one.net>
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%%%
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%%%
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%%% ejabberd, Copyright (C) 2002-2016 ProcessOne
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%%%
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%%% This program is free software; you can redistribute it and/or
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%%% modify it under the terms of the GNU General Public License as
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%%% published by the Free Software Foundation; either version 2 of the
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%%% License, or (at your option) any later version.
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%%%
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%%% This program is distributed in the hope that it will be useful,
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%%% but WITHOUT ANY WARRANTY; without even the implied warranty of
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%%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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%%% General Public License for more details.
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%%%
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%%% You should have received a copy of the GNU General Public License along
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%%% with this program; if not, write to the Free Software Foundation, Inc.,
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%%% 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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%%%
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%%%----------------------------------------------------------------------
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-module(ejabberd_rdbms).
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-behaviour(ejabberd_config).
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-author('alexey@process-one.net').
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-export([start/0, opt_type/1]).
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-include("ejabberd.hrl").
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-include("logger.hrl").
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start() ->
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file:delete(ejabberd_sql:freetds_config()),
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file:delete(ejabberd_sql:odbc_config()),
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file:delete(ejabberd_sql:odbcinst_config()),
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case lists:any(fun(H) -> needs_sql(H) /= false end,
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?MYHOSTS) of
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true ->
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start_hosts();
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false ->
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ok
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end.
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%% Start relationnal DB module on the nodes where it is needed
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start_hosts() ->
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lists:foreach(fun (Host) ->
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case needs_sql(Host) of
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{true, App} -> start_sql(Host, App);
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false -> ok
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end
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end,
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?MYHOSTS).
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%% Start the SQL module on the given host
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start_sql(Host, App) ->
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ejabberd:start_app(App),
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Supervisor_name = gen_mod:get_module_proc(Host,
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ejabberd_sql_sup),
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ChildSpec = {Supervisor_name,
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{ejabberd_sql_sup, start_link, [Host]}, transient,
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infinity, supervisor, [ejabberd_sql_sup]},
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case supervisor:start_child(ejabberd_sup, ChildSpec) of
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{ok, _PID} -> ok;
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_Error ->
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?ERROR_MSG("Start of supervisor ~p failed:~n~p~nRetrying."
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"..~n",
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[Supervisor_name, _Error]),
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start_sql(Host, App)
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end.
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%% Returns {true, App} if we have configured sql for the given host
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needs_sql(Host) ->
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LHost = jid:nameprep(Host),
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case ejabberd_config:get_option({sql_type, LHost},
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fun(mysql) -> mysql;
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(pgsql) -> pgsql;
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(sqlite) -> sqlite;
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(mssql) -> mssql;
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(odbc) -> odbc
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end, undefined) of
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mysql -> {true, p1_mysql};
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pgsql -> {true, p1_pgsql};
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sqlite -> {true, sqlite3};
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mssql -> {true, odbc};
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odbc -> {true, odbc};
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undefined -> false
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end.
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opt_type(sql_type) ->
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fun (mysql) -> mysql;
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(pgsql) -> pgsql;
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(sqlite) -> sqlite;
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(mssql) -> mssql;
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(odbc) -> odbc
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end;
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opt_type(_) -> [sql_type].
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