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%%%---------------------------------------------------------------------- |
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%%% Old copyright notice from mod_private.erl |
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%%% |
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%%% Author : Alexey Shchepin <alexey@process-one.net> |
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%%% Created : 16 Jan 2003 by Alexey Shchepin <alexey@process-one.net> |
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%%% |
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%%% |
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%%% ejabberd, Copyright (C) 2002-2011 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 |
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%%% along with this program; if not, write to the Free Software |
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%%% Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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%%% |
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%%%---------------------------------------------------------------------- |
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%%% NS is namespace or key. |
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%%% XML is #xmlel{} or value. |
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-module(mod_private_mnesia). |
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-author('alexey@process-one.net'). |
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-author('arcusfelis@gmail.com'). |
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-behaviour(mod_private_backend). |
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-export([init/2, |
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multi_set_data/4, |
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multi_get_data/4, |
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get_all_nss/3, |
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remove_user/3, |
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remove_domain/2]). |
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-include("mongoose.hrl"). |
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-include("jlib.hrl"). |
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-record(private_storage, {usns, xml}). |
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init(_HostType, _Opts) -> |
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mongoose_mnesia:create_table(private_storage, |
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[{disc_only_copies, [node()]}, |
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{attributes, record_info(fields, private_storage)}]), |
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ok. |
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multi_set_data(_HostType, LUser, LServer, NS2XML) -> |
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F = fun() -> multi_set_data_t(LUser, LServer, NS2XML) end, |
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case mnesia:transaction(F) of |
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{atomic, ok} -> ok; |
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:-( |
{aborted, Reason} -> {aborted, Reason} |
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end. |
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multi_set_data_t(LUser, LServer, NS2XML) -> |
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[set_data_t(LUser, LServer, NS, XML) || {NS, XML} <- NS2XML], |
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ok. |
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set_data_t(LUser, LServer, NS, XML) -> |
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mnesia:write(#private_storage{usns = {LUser, LServer, NS}, xml = XML}). |
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multi_get_data(_HostType, LUser, LServer, NS2Def) -> |
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[get_data(LUser, LServer, NS, Default) || {NS, Default} <- NS2Def]. |
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get_all_nss(_HostType, LUser, LServer) -> |
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F = fun() -> |
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select_namespaces_t(LUser, LServer) |
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end, |
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{atomic, NSs} = mnesia:transaction(F), |
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NSs. |
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%% @doc Return stored value or default. |
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get_data(LUser, LServer, NS, Default) -> |
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case mnesia:dirty_read(private_storage, {LUser, LServer, NS}) of |
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[#private_storage{xml=XML}] -> XML; |
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[] -> Default |
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end. |
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remove_user(_HostType, LUser, LServer) -> |
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F = fun() -> |
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NSs = select_namespaces_t(LUser, LServer), |
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[delete_record_t(LUser, LServer, NS) || NS <- NSs] |
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end, |
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mnesia:transaction(F). |
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%% There is no optimized way to remove a domain. |
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%% We expect, that domain removal process would call remove_user instead |
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%% for each user. |
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remove_domain(_HostType, _LServer) -> |
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ok. |
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select_namespaces_t(LUser, LServer) -> |
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Result = mnesia:select( |
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private_storage, |
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[{#private_storage{usns={LUser, LServer, '$1'}, _ = '_'}, |
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[], |
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['$$']}]), |
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[NS || [NS] <- Result]. |
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delete_record_t(LUser, LServer, NS) -> |
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mnesia:delete({private_storage, {LUser, LServer, NS}}). |