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|
%%% ====================================================================
%%% This software is copyright 2006-2010, ProcessOne.
%%%
%%% mod_support
%%% allow automatic build of support archive to be sent to Process-One
%%%
%%% @copyright 2006-2010 ProcessOne
%%% @author Christophe Romain <christophe.romain@process-one.net>
%%% [http://www.process-one.net/]
%%% @version {@vsn}, {@date} {@time}
%%% @end
%%% ====================================================================
-module(mod_support).
-author('christophe.romain@process-one.net').
-behaviour(gen_mod).
%-behaviour(gen_server).
% module functions
-export([start/2,stop/1,is_loaded/0,loop/1,dump/0]).
-compile(export_all).
-include("ejabberd.hrl").
-include("jlib.hrl").
-include("licence.hrl").
-include_lib("kernel/include/file.hrl").
-define(LOG_FETCH_SIZE, 1000000).
-define(RPC_TIMEOUT, 10000). % 10
-define(MAX_FILE_SIZE, 2147483648). %%2Gb
start(Host, Opts) ->
case ?IS_VALID of
true ->
case gen_mod:get_opt(dump_freq, Opts, 0) of
0 -> no_dump;
Freq -> spawn(?MODULE, loop, [Freq*60000])
end,
ok;
false ->
not_started
end.
stop(Host) ->
ok.
is_loaded() ->
ok.
loop(Timeout) ->
receive
quit -> ok
after Timeout ->
Dump = dump(),
BaseName = get_base_name(),
%%{Data,EjabberdLog,SaslLog,ECrash} = Dump,
write_logs(tuple_to_list(Dump),BaseName,["_memory.bin",
"_ejabberd.log.gz",
"_sasl.log.gz",
"_erlang_crash_dump.log.gz"]),
loop(Timeout)
end.
get_base_name() ->
{{Y,M,D},{Hr,Mn,_Sc}} = calendar:local_time(),
case os:getenv("EJABBERD_LOG_PATH") of
false ->
filename:join(filename:dirname(filename:absname("")),
lists:flatten(io_lib:format("~b~b~b~b~b",[Y,M,D,Hr,Mn])));
Path ->
filename:join(filename:dirname(Path),
lists:flatten(io_lib:format("~b~b~b~b~b",[Y,M,D,Hr,Mn])))
end.
write_logs([BinaryData|T],BaseName,[Filename|Filenames]) ->
Log = BaseName++Filename,
file:write_file(Log, BinaryData),
write_logs(T,BaseName,Filenames);
write_logs([],BaseName,_)-> ok.
dump() ->
Dump = lists:map(fun(LogFile) ->
Content = case file:open(LogFile,[read,raw]) of
{ok, IO} ->
Size = case file:read_file_info(LogFile) of
{ok, FileInfo} -> FileInfo#file_info.size;
_ -> ?LOG_FETCH_SIZE
end,
case Size>?MAX_FILE_SIZE of
true -> io_lib:format("File ~s is too big: ~p bytes.",[LogFile, Size]);
false ->
if Size>?LOG_FETCH_SIZE ->
file:position(IO, Size-?LOG_FETCH_SIZE),
case file:read(IO, ?LOG_FETCH_SIZE) of
{ok, Data1} -> Data1;
Error1 -> io_lib:format("can not read log file (~s): ~p",[LogFile, Error1])
end;
true ->
case file:read(IO, Size) of
{ok, Data2} -> Data2;
Error2 -> io_lib:format("can not read log file (~s): ~p",[LogFile, Error2])
end
end
end;
{error, Reason} ->
io_lib:format("can not open log file (~s): ~p",[LogFile, Reason])
end,
zlib:gzip(list_to_binary(Content))
end, [ejabberd_logs(), sasl_logs(), erl_crash()]),
NodeState = get_node_state(),
list_to_tuple([NodeState|Dump]).
ejabberd_logs() ->
LogPath = case application:get_env(log_path) of
{ok, Path} ->
Path;
undefined ->
case os:getenv("EJABBERD_LOG_PATH") of
false -> ?LOG_PATH;
Path -> Path
end
end.
sasl_logs() ->
case os:getenv("SASL_LOG_PATH") of
false -> filename:join([filename:dirname(ejabberd_logs()),"sasl.log"]);
Path -> Path
end.
erl_crash() ->
LogsDir = filename:dirname(ejabberd_logs()),
CrashDumpWildcard = filename:join([LogsDir,"erl_crash*dump"]),
FileName = case filelib:wildcard(CrashDumpWildcard) of
[Files] -> [LastFile|T] = lists:reverse([Files]),
LastFile;
_ -> case os:getenv("ERL_CRASH_DUMP") of
false -> "erl_crash.dump";
Path -> Path
end
end.
proc_info(Pid) ->
Info = process_info(Pid),
lists:map(fun(Elem) ->
List = proplists:get_value(Elem, Info),
{Elem, size(term_to_binary(List))}
end, [messages, dictionary])
++ [X || X <- Info,
lists:member(element(1,X),
[heap_size,stack_size,reductions,links,status,initial_call,current_function])].
environment() ->
{ok, KE} = application:get_key(kernel,env),
{ok, EE} = application:get_key(ejabberd,env),
Env = [{inetrc, os:getenv("ERL_INETRC")},
{sopath, os:getenv("EJABBERD_SO_PATH")},
{maxports, os:getenv("ERL_MAX_PORTS")},
{maxtables, os:getenv("ERL_MAX_ETS_TABLES")},
{crashdump, os:getenv("ERL_CRASH_DUMP")},
{archdir, os:getenv("ARCHDIR")},
{mnesia, mnesia:system_info(all)}],
Args = [{args, init:get_arguments()}, {plain, init:get_plain_arguments()}],
KE++EE++Env++Args.
memtop(N) ->
E = lists:sublist(lists:reverse(lists:keysort(2,lists:map(fun(Tab) -> {Tab, ets:info(Tab,memory)} end, ets:all()))),N),
M = lists:sublist(lists:reverse(lists:keysort(2,lists:map(fun(Tab) -> {Tab, mnesia:table_info(Tab,memory)} end, mnesia:system_info(tables)))),N),
E++M.
maxmsgqueue() ->
lists:max(lists:map(fun(Pid) -> proplists:get_value(message_queue_len,process_info(Pid)) end, erlang:processes())).
msgqueue(N) ->
lists:filter(fun(L) -> proplists:get_value(message_queue_len, L) > N
end, lists:map(fun(Pid) -> process_info(Pid) end, erlang:processes())).
%lists:sublist(lists:reverse(lists:keysort(2,lists:map(fun(Pid) -> {E,L} = process_info(Pid, dictionary), {E,length(L)} end, erlang:processes()))), 10)
%%Entry point to invoke mod_support via command line.
%%Example: erl -sname debug@localhost -s mod_support report ejabberd@localhost
%%See issue #TECH-286.
report(Node) ->
[NodeId|T]=Node,
UploadResult = force_load_code_into_node(NodeId, ?MODULE),
case UploadResult of
ok -> NodeState = rpc:call(NodeId,mod_support,get_node_state,[],?RPC_TIMEOUT),
Dump = rpc:call(NodeId,mod_support,dump,[],?RPC_TIMEOUT),
BaseName = get_base_name(),
%%{Data,EjabberdLog,SaslLog,ECrash} = Dump,
write_logs(tuple_to_list(Dump),BaseName,["_memory.bin",
"_ejabberd.log.gz",
"_sasl.log.gz",
"_erlang_crash_dump.log.gz"]),
error_logger:info_msg("State in node ~p was written to log~n",[NodeId]),
error_logger:info_msg("Unloading module ~s from node ~p. ",[?MODULE,NodeId]),
force_unload_code_from_node(NodeId, ?MODULE);
_ -> error_logger:info_msg("Error uploading module ~s from node ~p~n",[?MODULE,NodeId])
end.
%%Load Module into the ejabberd Node specified.
force_load_code_into_node(Node, Module) ->
CodeFile = code:where_is_file(atom_to_list(Module)++".beam"),
case file:read_file(CodeFile) of
{ok, Code} ->
rpc:call(Node, code, purge, [Module], ?RPC_TIMEOUT),
rpc:call(Node, code, delete, [Module], ?RPC_TIMEOUT),
case rpc:call(Node, code, load_binary, [Module, CodeFile, Code], ?RPC_TIMEOUT) of
{module, _} ->
error_logger:info_msg("Loading ~s module into ~p : success ~n", [Module,Node]),
rpc:block_call(Node, Module, is_loaded, [], ?RPC_TIMEOUT);
{error, badfile} ->
error_logger:info_msg("Loading ~s module into ~p : incorrect format ~n", [Module,Node]),
{error, badfile};
{error, not_purged} ->
% this should never happen anyway..
error_logger:info_msg("Loading ~s module into ~p : old code already exists ~n", [Module,Node]),
{error, not_purged};
{badrpc, Reason} ->
error_logger:info_msg("Loading ~s module into ~p: badrpc ~p ~n", [Module,Node,Reason]),
{badrpc, Reason}
end;
Error ->
error_logger:error_msg("Cannot read module file ~s ~p : ~p ~n", [Module, CodeFile, Error]),
Error
end.
%%Unload erlang Module from the Node specified. Used to ensure cleanup after rpc calls.
force_unload_code_from_node(Node, Module) ->
rpc:call(Node, code, purge, [Module], ?RPC_TIMEOUT),
rpc:call(Node, code, delete, [Module], ?RPC_TIMEOUT).
%%Retrieve system state and pack it into Data
%%TODO enhance state info. See #TECH-286.
get_node_state() ->
Mem = erlang:memory(),
Ets = lists:map(fun(Tab) -> ets:info(Tab) end, ets:all()),
Mnesia = lists:map(fun(Tab) -> mnesia:table_info(Tab,all) end, mnesia:system_info(tables)),
Procs = lists:map(fun(Pid) -> proc_info(Pid) end, erlang:processes()),
Data = term_to_binary({Mem, Ets, Mnesia, Procs}).
crash_dump() ->
SystemInfo = [erlang:system_info(X) || X<-[info,loaded,procs]],
[zlib:gzip(list_to_binary(lists:flatten(SystemInfo)))].
crash_dump(Node) ->
[NodeId|T]=Node,
UploadResult = force_load_code_into_node(NodeId, ?MODULE),
case UploadResult of
ok -> Dump = rpc:call(NodeId,mod_support,crash_dump,[],?RPC_TIMEOUT),
BaseName = get_base_name(),
write_logs(Dump,BaseName,["_realtime_crash_dump.gz"]),
error_logger:info_msg("Unloading module ~s from node ~p. ",[?MODULE,NodeId]),
force_unload_code_from_node(NodeId, ?MODULE);
_ -> error_logger:info_msg("Error uploading module ~s from node ~p~n",[?MODULE,NodeId])
end.
|
