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xmpp.chapril.org-ejabberd/src/mod_stats.erl

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%%%----------------------------------------------------------------------
%%% File : mod_stats.erl
%%% Author : Alexey Shchepin <alexey@process-one.net>
%%% Purpose : Basic statistics.
%%% Created : 11 Jan 2003 by Alexey Shchepin <alexey@process-one.net>
%%%
%%%
%%% 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.
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