%%%---------------------------------------------------------------------- %%% File : mod_stats.erl %%% Author : Alexey Shchepin %%% Purpose : Basic statistics. %%% Created : 11 Jan 2003 by Alexey Shchepin %%% %%% %%% ejabberd, Copyright (C) 2002-2012 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., 59 Temple Place, Suite 330, Boston, MA %%% 02111-1307 USA %%% %%%---------------------------------------------------------------------- -module(mod_stats). -author('alexey@process-one.net'). -behaviour(gen_mod). -export([start/2, stop/1, process_local_iq/3]). -include_lib("exmpp/include/exmpp.hrl"). start(Host, Opts) when is_list(Host) -> start(list_to_binary(Host), Opts); start(HostB, Opts) -> IQDisc = gen_mod:get_opt(iqdisc, Opts, one_queue), gen_iq_handler:add_iq_handler(ejabberd_local, HostB, ?NS_STATS_s, ?MODULE, process_local_iq, IQDisc). stop(Host) -> gen_iq_handler:remove_iq_handler(ejabberd_local, list_to_binary(Host), ?NS_STATS_s). process_local_iq(_From, To, #iq{type = get, ns = XMLNS, payload = SubEl} = IQ_Rec) -> Node = string:tokens(exmpp_xml:get_attribute_as_list(SubEl, <<"node">>, ""), "/"), Names = get_names(exmpp_xml:get_child_elements(SubEl), []), case get_local_stats(exmpp_jid:domain(To), Node, Names) of {result, Res} -> Result = #xmlel{ns = XMLNS, name = 'query', children = Res}, exmpp_iq:result(IQ_Rec, Result); {error, Error} -> exmpp_iq:error(IQ_Rec, Error) end; process_local_iq(_From, _To, #iq{type = set} = IQ_Rec) -> exmpp_iq:error(IQ_Rec, 'not-allowed'). get_names([], Res) -> Res; get_names([#xmlel{name = "stat", attrs = Attrs} | Els], Res) -> Name = exmpp_xml:get_attribute_from_list_as_binary(Attrs, <<"name">>, <<>>), case Name of <<>> -> get_names(Els, Res); _ -> get_names(Els, [Name | Res]) end; get_names([_ | Els], Res) -> get_names(Els, Res). -define(STAT(Name), #xmlel{ns = ?NS_STATS_s, name = 'stat', attrs = [?XMLATTR(<<"name">>, Name)]}). get_local_stats(_Server, [], []) -> {result, [?STAT(<<"users/online">>), ?STAT(<<"users/total">>), ?STAT(<<"users/all-hosts/online">>), ?STAT(<<"users/all-hosts/total">>) ]}; get_local_stats(Server, [], Names) -> {result, lists:map(fun(Name) -> get_local_stat(Server, [], Name) end, Names)}; get_local_stats(_Server, ["running nodes", _], []) -> {result, [?STAT(<<"time/uptime">>), ?STAT(<<"time/cputime">>), ?STAT(<<"users/online">>), ?STAT(<<"transactions/committed">>), ?STAT(<<"transactions/aborted">>), ?STAT(<<"transactions/restarted">>), ?STAT(<<"transactions/logged">>) ]}; get_local_stats(_Server, ["running nodes", ENode], Names) -> case search_running_node(ENode) of false -> {error, 'item-not-found'}; Node -> {result, lists:map(fun(Name) -> get_node_stat(Node, Name) end, Names)} end; get_local_stats(_Server, _, _) -> {error, 'feature-not-implemented'}. -define(STATVAL(Val, Unit), #xmlel{ns = ?NS_STATS_s, name = 'stat', attrs = [?XMLATTR(<<"name">>, Name), ?XMLATTR(<<"units">>, Unit), ?XMLATTR(<<"value">>, Val) ]}). -define(STATERR(Code, Desc), #xmlel{ns = ?NS_STATS_s, name = 'stat', attrs= [?XMLATTR(<<"name">>, Name)], children = [#xmlel{ns = ?NS_STATS_s, name = 'error', attrs = [?XMLATTR(<<"code">>, Code)], children = [#xmlcdata{cdata = Desc}]}]}). get_local_stat(Server, [], Name) when Name == <<"users/online">> -> case catch ejabberd_sm:get_vh_session_list(Server) of {'EXIT', _Reason} -> ?STATERR(<<"500">>, <<"Internal Server Error">>); Users -> ?STATVAL(list_to_binary(integer_to_list(length(Users))), <<"users">>) end; get_local_stat(Server, [], Name) when Name == <<"users/total">> -> %%LServer = jlib:nameprep(Server), case catch ejabberd_auth:get_vh_registered_users_number(binary_to_list(Server)) of {'EXIT', _Reason} -> ?STATERR(<<"500">>, <<"Internal Server Error">>); NUsers -> ?STATVAL(list_to_binary(integer_to_list(NUsers)), <<"users">>) end; get_local_stat(_Server, [], Name) when Name == <<"users/all-hosts/online">> -> case catch mnesia:table_info(session, size) of {'EXIT', _Reason} -> ?STATERR(<<"500">>, <<"Internal Server Error">>); Users -> ?STATVAL(list_to_binary(integer_to_list(Users)), <<"users">>) end; get_local_stat(_Server, [], Name) when Name == <<"users/all-hosts/total">> -> NumUsers = lists:foldl( fun(Host, Total) -> ejabberd_auth:get_vh_registered_users_number(Host) + Total end, 0, ejabberd_config:get_global_option(hosts)), ?STATVAL(list_to_binary(integer_to_list(NumUsers)), <<"users">>); get_local_stat(_Server, _, Name) -> ?STATERR(<<"404">>, <<"Not Found">>). get_node_stat(Node, Name) when Name == <<"time/uptime">> -> case catch rpc:call(Node, erlang, statistics, [wall_clock]) of {badrpc, _Reason} -> ?STATERR(<<"500">>, <<"Internal Server Error">>); CPUTime -> ?STATVAL(list_to_binary( io_lib:format("~.3f", [element(1, CPUTime)/1000])), "seconds") end; get_node_stat(Node, Name) when Name == <<"time/cputime">> -> case catch rpc:call(Node, erlang, statistics, [runtime]) of {badrpc, _Reason} -> ?STATERR(<<"500">>, <<"Internal Server Error">>); RunTime -> ?STATVAL(list_to_binary( io_lib:format("~.3f", [element(1, RunTime)/1000])), "seconds") end; get_node_stat(Node, Name) when Name == <<"users/online">> -> case catch rpc:call(Node, ejabberd_sm, dirty_get_my_sessions_list, []) of {badrpc, _Reason} -> ?STATERR(<<"500">>, <<"Internal Server Error">>); Users -> ?STATVAL(list_to_binary(integer_to_list(length(Users))), <<"users">>) end; get_node_stat(Node, Name) when Name == <<"transactions/committed">> -> case catch rpc:call(Node, mnesia, system_info, [transaction_commits]) of {badrpc, _Reason} -> ?STATERR(<<"500">>, <<"Internal Server Error">>); Transactions -> ?STATVAL(list_to_binary(integer_to_list(Transactions)), <<"transactions">>) end; get_node_stat(Node, Name) when Name == <<"transactions/aborted">> -> case catch rpc:call(Node, mnesia, system_info, [transaction_failures]) of {badrpc, _Reason} -> ?STATERR(<<"500">>, <<"Internal Server Error">>); Transactions -> ?STATVAL(list_to_binary(integer_to_list(Transactions)), <<"transactions">>) end; get_node_stat(Node, Name) when Name == <<"transactions/restarted">> -> case catch rpc:call(Node, mnesia, system_info, [transaction_restarts]) of {badrpc, _Reason} -> ?STATERR(<<"500">>, <<"Internal Server Error">>); Transactions -> ?STATVAL(list_to_binary(integer_to_list(Transactions)), <<"transactions">>) end; get_node_stat(Node, Name) when Name == <<"transactions/logged">> -> case catch rpc:call(Node, mnesia, system_info, [transaction_log_writes]) of {badrpc, _Reason} -> ?STATERR(<<"500">>, <<"Internal Server Error">>); Transactions -> ?STATVAL(list_to_binary(integer_to_list(Transactions)), <<"transactions">>) end; get_node_stat(_, Name) -> ?STATERR(<<"404">>, <<"Not Found">>). search_running_node(SNode) -> search_running_node(SNode, mnesia:system_info(running_db_nodes)). search_running_node(_, []) -> false; search_running_node(SNode, [Node | Nodes]) -> case atom_to_list(Node) of SNode -> Node; _ -> search_running_node(SNode, Nodes) end.