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6fcef6f5c4
connection in each pool (EJAB-58). * src/odbc/ejabberd_odbc.erl: Add an odbc_keepalive_interval config file option to perform a keep alive query at given interval (EJAB-206). SVN Revision: 879
59 lines
1.5 KiB
Erlang
59 lines
1.5 KiB
Erlang
%%%----------------------------------------------------------------------
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%%% File : ejabberd_odbc_sup.erl
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%%% Author : Alexey Shchepin <alexey@sevcom.net>
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%%% Purpose : ODBC connections supervisor
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%%% Created : 22 Dec 2004 by Alexey Shchepin <alexey@sevcom.net>
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%%% Id : $Id$
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%%%----------------------------------------------------------------------
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-module(ejabberd_odbc_sup).
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-author('alexey@sevcom.net').
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-vsn('$Revision$ ').
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%% API
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-export([start_link/1,
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init/1,
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get_pids/1,
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get_random_pid/1
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]).
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-include("ejabberd.hrl").
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-define(DEFAULT_POOL_SIZE, 10).
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start_link(Host) ->
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supervisor:start_link({local, gen_mod:get_module_proc(Host, ?MODULE)},
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?MODULE, [Host]).
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init([Host]) ->
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N = case ejabberd_config:get_local_option({odbc_pool_size, Host}) of
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I when is_integer(I) ->
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I;
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undefined ->
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?DEFAULT_POOL_SIZE;
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Other ->
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?ERROR_MSG("Wrong odbc_pool_size definition '~p' for host ~p, default to ~p~n",
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[Other, Host, ?DEFAULT_POOL_SIZE]),
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?DEFAULT_POOL_SIZE
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end,
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{ok, {{one_for_one, 10, 6},
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lists:map(
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fun(I) ->
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{I,
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{ejabberd_odbc, start_link, [Host]},
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transient,
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brutal_kill,
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worker,
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[?MODULE]}
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end, lists:seq(1, N))}}.
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get_pids(Host) ->
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Proc = gen_mod:get_module_proc(Host, ?MODULE),
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[Child ||
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{_Id, Child, _Type, _Modules} <- supervisor:which_children(Proc),
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Child /= undefined].
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get_random_pid(Host) ->
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Pids = get_pids(Host),
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lists:nth(erlang:phash(now(), length(Pids)), Pids).
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