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-rw-r--r--lib/snmp/src/agent/snmpa_mib.erl149
1 files changed, 86 insertions, 63 deletions
diff --git a/lib/snmp/src/agent/snmpa_mib.erl b/lib/snmp/src/agent/snmpa_mib.erl
index 575a018c0c..a5e4a4cb73 100644
--- a/lib/snmp/src/agent/snmpa_mib.erl
+++ b/lib/snmp/src/agent/snmpa_mib.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2013. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
@@ -18,7 +18,6 @@
%%
-module(snmpa_mib).
-%% c(snmpa_mib).
%%%-----------------------------------------------------------------
%%% This module implements a MIB server.
@@ -75,12 +74,14 @@
%% Internal Data structures
%%
%% State
-%% data - is the MIB data (defined in snmpa_mib_data)
+%% data - is the MIB data (defined in mib_data module)
%% meo - mib entry override
%% teo - trap (notification) entry override
%%-----------------------------------------------------------------
--record(state, {data, meo, teo, backup,
- cache, cache_tmr, cache_autogc, cache_gclimit, cache_age}).
+-record(state,
+ {data, meo, teo, backup,
+ cache, cache_tmr, cache_autogc, cache_gclimit, cache_age,
+ mib_data_mod}).
@@ -289,9 +290,11 @@ do_init(Prio, Mibs, Opts) ->
MeOverride = get_me_override(Opts),
TeOverride = get_te_override(Opts),
MibStorage = get_mib_storage(Opts),
+ MibDataMod = get_mib_data_mod(Otps),
Data = snmpa_mib_data:new(MibStorage),
?vtrace("init -> mib data created",[]),
- case (catch mib_operations(load_mib, Mibs, Data,
+ case (catch mib_operations(MibDataMod,
+ load_mib, Mibs, Data,
MeOverride, TeOverride, true)) of
{ok, Data2} ->
?vdebug("started",[]),
@@ -304,7 +307,8 @@ do_init(Prio, Mibs, Opts) ->
cache_tmr = CacheGcTimer,
cache_autogc = CacheAutoGC,
cache_gclimit = CacheGcLimit,
- cache_age = CacheAge}};
+ cache_age = CacheAge,
+ mib_data_mib = MibDataMib}};
{'aborted at', Mib, _NewData, Reason} ->
?vinfo("failed loading mib ~p: ~p",[Mib,Reason]),
{error, {Mib, Reason}}
@@ -315,26 +319,28 @@ do_init(Prio, Mibs, Opts) ->
%% Returns: {ok, NewMibData} | {'aborted at', Mib, NewData, Reason}
%% Args: Operation is load_mib | unload_mib.
%%----------------------------------------------------------------------
-mib_operations(Operation, Mibs, Data, MeOverride, TeOverride) ->
- mib_operations(Operation, Mibs, Data, MeOverride, TeOverride, false).
+mib_operations(Mod, Operation, Mibs, Data, MeOverride, TeOverride) ->
+ mib_operations(Mod, Operation, Mibs, Data, MeOverride, TeOverride, false).
-mib_operations(_Operation, [], Data, _MeOverride, _TeOverride, _Force) ->
+mib_operations(_Mod, _Operation, [], Data, _MeOverride, _TeOverride, _Force) ->
{ok, Data};
-mib_operations(Operation, [Mib|Mibs], Data0, MeOverride, TeOverride, Force) ->
+mib_operations(Mod, Operation, [Mib|Mibs], Data0, MeOverride, TeOverride, Force) ->
?vtrace("mib operations ~p on"
- "~n Mibs: ~p"
- "~n with "
- "~n MeOverride: ~p"
- "~n TeOverride: ~p"
- "~n Force: ~p", [Operation,Mibs,MeOverride,TeOverride,Force]),
- Data = mib_operation(Operation, Mib, Data0, MeOverride, TeOverride, Force),
- mib_operations(Operation, Mibs, Data, MeOverride, TeOverride, Force).
-
-mib_operation(Operation, Mib, Data0, MeOverride, TeOverride, Force)
+ "~n Mibs: ~p"
+ "~n with "
+ "~n MeOverride: ~p"
+ "~n TeOverride: ~p"
+ "~n Force: ~p",
+ [Operation, Mibs, MeOverride, TeOverride, Force]),
+ Data = mib_operation(Mod,
+ Operation, Mib, Data0, MeOverride, TeOverride, Force),
+ mib_operations(Mod, Operation, Mibs, Data, MeOverride, TeOverride, Force).
+
+mib_operation(Mod, Operation, Mib, Data0, MeOverride, TeOverride, Force)
when is_list(Mib) ->
?vtrace("mib operation on mib ~p", [Mib]),
- case apply(snmpa_mib_data, Operation, [Data0,Mib,MeOverride,TeOverride]) of
+ case apply(Mod, Operation, [Data0, Mib, MeOverride, TeOverride]) of
{error, 'already loaded'} when (Operation =:= load_mib) andalso
(Force =:= true) ->
?vlog("ignore mib ~p -> already loaded", [Mib]),
@@ -350,7 +356,7 @@ mib_operation(Operation, Mib, Data0, MeOverride, TeOverride, Force)
{ok, Data} ->
Data
end;
-mib_operation(_Op, Mib, Data, _MeOverride, _TeOverride, _Force) ->
+mib_operation(_Mod, _Op, Mib, Data, _MeOverride, _TeOverride, _Force) ->
throw({'aborted at', Mib, Data, bad_mibname}).
@@ -395,15 +401,15 @@ handle_call({update_cache_opts, Key, Value}, _From, State) ->
{reply, Result, NewState};
handle_call({lookup, Oid}, _From,
- #state{data = Data, cache = Cache} = State) ->
+ #state{data = Data, cache = Cache, mib_data_mod = Mod} = State) ->
?vlog("lookup ~p", [Oid]),
Key = {lookup, Oid},
{Reply, NewState} =
case maybe_cache_lookup(Cache, Key) of
?NO_CACHE ->
- {snmpa_mib_data:lookup(Data, Oid), State};
+ {Mod:lookup(Data, Oid), State};
[] ->
- Rep = snmpa_mib_data:lookup(Data, Oid),
+ Rep = Mod:lookup(Data, Oid),
ets:insert(Cache, {Key, Rep, timestamp()}),
{Rep, maybe_start_cache_gc_timer(State)};
[{Key, Rep, _}] ->
@@ -414,22 +420,23 @@ handle_call({lookup, Oid}, _From,
?vdebug("lookup -> Reply: ~p", [Reply]),
{reply, Reply, NewState};
-handle_call({which_mib, Oid}, _From, #state{data = Data} = State) ->
+handle_call({which_mib, Oid}, _From,
+ #state{data = Data, mib_data_mod = Mod} = State) ->
?vlog("which_mib ~p",[Oid]),
- Reply = snmpa_mib_data:which_mib(Data, Oid),
+ Reply = Mod:which_mib(Data, Oid),
?vdebug("which_mib: ~p",[Reply]),
{reply, Reply, State};
handle_call({next, Oid, MibView}, _From,
- #state{data = Data, cache = Cache} = State) ->
+ #state{data = Data, cache = Cache, mib_data_mod = Mod} = State) ->
?vlog("next ~p [~p]", [Oid, MibView]),
Key = {next, Oid, MibView},
{Reply, NewState} =
case maybe_cache_lookup(Cache, Key) of
?NO_CACHE ->
- {snmpa_mib_data:next(Data, Oid, MibView), State};
+ {Mod:next(Data, Oid, MibView), State};
[] ->
- Rep = snmpa_mib_data:next(Data, Oid, MibView),
+ Rep = Mod:next(Data, Oid, MibView),
ets:insert(Cache, {Key, Rep, timestamp()}),
{Rep, maybe_start_cache_gc_timer(State)};
[{Key, Rep, _}] ->
@@ -441,15 +448,16 @@ handle_call({next, Oid, MibView}, _From,
{reply, Reply, NewState};
handle_call({load_mibs, Mibs}, _From,
- #state{data = Data,
- teo = TeOverride,
- meo = MeOverride,
- cache = Cache} = State) ->
+ #state{data = Data,
+ teo = TeOverride,
+ meo = MeOverride,
+ cache = Cache,
+ mib_data_mod = Mod} = State) ->
?vlog("load mibs ~p",[Mibs]),
%% Invalidate cache
NewCache = maybe_invalidate_cache(Cache),
{NData,Reply} =
- case (catch mib_operations(load_mib, Mibs, Data,
+ case (catch mib_operations(Mod, load_mib, Mibs, Data,
MeOverride, TeOverride)) of
{'aborted at', Mib, NewData, Reason} ->
?vlog("aborted at ~p for reason ~p",[Mib,Reason]),
@@ -457,20 +465,21 @@ handle_call({load_mibs, Mibs}, _From,
{ok, NewData} ->
{NewData,ok}
end,
- snmpa_mib_data:sync(NData),
+ Mod:sync(NData),
{reply, Reply, State#state{data = NData, cache = NewCache}};
handle_call({unload_mibs, Mibs}, _From,
- #state{data = Data,
- teo = TeOverride,
- meo = MeOverride,
- cache = Cache} = State) ->
+ #state{data = Data,
+ teo = TeOverride,
+ meo = MeOverride,
+ cache = Cache,
+ mib_data_mod = Mod} = State) ->
?vlog("unload mibs ~p",[Mibs]),
%% Invalidate cache
NewCache = maybe_invalidate_cache(Cache),
%% Unload mib(s)
{NData,Reply} =
- case (catch mib_operations(unload_mib, Mibs, Data,
+ case (catch mib_operations(Mod, unload_mib, Mibs, Data,
MeOverride, TeOverride)) of
{'aborted at', Mib, NewData, Reason} ->
?vlog("aborted at ~p for reason ~p",[Mib,Reason]),
@@ -478,25 +487,28 @@ handle_call({unload_mibs, Mibs}, _From,
{ok, NewData} ->
{NewData,ok}
end,
- snmpa_mib_data:sync(NData),
+ Mod:sync(NData),
{reply, Reply, State#state{data = NData, cache = NewCache}};
handle_call(which_mibs, _From, #state{data = Data} = State) ->
?vlog("which mibs",[]),
- Reply = snmpa_mib_data:which_mibs(Data),
+ Reply = Mod:which_mibs(Data),
{reply, Reply, State};
-handle_call({whereis_mib, Mib}, _From, #state{data = Data} = State) ->
+handle_call({whereis_mib, Mib}, _From,
+ #state{data = Data,
+ mib_data_mod = Mod} = State) ->
?vlog("whereis mib: ~p",[Mib]),
- Reply = snmpa_mib_data:whereis_mib(Data, Mib),
+ Reply = Mod:whereis_mib(Data, Mib),
{reply, Reply, State};
handle_call({register_subagent, Oid, Pid}, _From,
- #state{data = Data, cache = Cache} = State) ->
+ #state{data = Data, cache = Cache,
+ mib_data_mod = Mod} = State) ->
?vlog("register subagent ~p, ~p",[Oid,Pid]),
%% Invalidate cache
NewCache = maybe_invalidate_cache(Cache),
- case snmpa_mib_data:register_subagent(Data, Oid, Pid) of
+ case Mod:register_subagent(Data, Oid, Pid) of
{error, Reason} ->
?vlog("registration failed: ~p",[Reason]),
{reply, {error, Reason}, State#state{cache = NewCache}};
@@ -505,11 +517,12 @@ handle_call({register_subagent, Oid, Pid}, _From,
end;
handle_call({unregister_subagent, OidOrPid}, _From,
- #state{data = Data, cache = Cache} = State) ->
+ #state{data = Data, cache = Cache,
+ mib_data_mod = Mod} = State) ->
?vlog("unregister subagent ~p",[OidOrPid]),
%% Invalidate cache
NewCache = maybe_invalidate_cache(Cache),
- case snmpa_mib_data:unregister_subagent(Data, OidOrPid) of
+ case Mod:unregister_subagent(Data, OidOrPid) of
{ok, NewData, DeletedSubagentPid} ->
{reply, {ok, DeletedSubagentPid}, State#state{data = NewData,
cache = NewCache}};
@@ -520,10 +533,11 @@ handle_call({unregister_subagent, OidOrPid}, _From,
{reply, ok, State#state{data = NewData, cache = NewCache}}
end;
-handle_call(info, _From, #state{data = Data, cache = Cache} = State) ->
+handle_call(info, _From, #state{data = Data, cache = Cache,
+ mib_data_mod = Mod} = State) ->
?vlog("info",[]),
Reply =
- case (catch snmpa_mib_data:info(Data)) of
+ case (catch Mod:info(Data)) of
Info when is_list(Info) ->
[{cache, size_cache(Cache)} | Info];
E ->
@@ -531,10 +545,12 @@ handle_call(info, _From, #state{data = Data, cache = Cache} = State) ->
end,
{reply, Reply, State};
-handle_call({info, Type}, _From, #state{data = Data} = State) ->
+handle_call({info, Type}, _From,
+ #state{data = Data,
+ mib_data_mod = Mod} = State) ->
?vlog("info ~p",[Type]),
Reply =
- case (catch snmpa_mib_data:info(Data, Type)) of
+ case (catch Mod:info(Data, Type)) of
Info when is_list(Info) ->
Info;
E ->
@@ -542,21 +558,23 @@ handle_call({info, Type}, _From, #state{data = Data} = State) ->
end,
{reply, Reply, State};
-handle_call(dump, _From, State) ->
+handle_call(dump, _From, #state{mib_data_mod = Mod} = _State) ->
?vlog("dump",[]),
- Reply = snmpa_mib_data:dump(State#state.data),
+ Reply = Mod:dump(State#state.data),
{reply, Reply, State};
-handle_call({dump, File}, _From, #state{data = Data} = State) ->
+handle_call({dump, File}, _From,
+ #state{data = Data, mib_data_mod = Mod} = State) ->
?vlog("dump on ~s",[File]),
- Reply = snmpa_mib_data:dump(Data, File),
+ Reply = Mod:dump(Data, File),
{reply, Reply, State};
%% This check (that there is no backup already in progress) is also
%% done in the master agent process, but just in case a user issues
%% a backup call to this process directly, we add a similar check here.
handle_call({backup, BackupDir}, From,
- #state{backup = undefined, data = Data} = State) ->
+ #state{backup = undefined,
+ data = Data, mib_data_mod = Mod} = State) ->
?vlog("backup to ~s", [BackupDir]),
Pid = self(),
V = get(verbosity),
@@ -568,7 +586,7 @@ handle_call({backup, BackupDir}, From,
put(sname, ambs),
put(verbosity, V),
Dir = filename:join([BackupDir]),
- Reply = snmpa_mib_data:backup(Data, Dir),
+ Reply = Mod:backup(Data, Dir),
Pid ! {backup_done, Reply},
unlink(Pid)
end),
@@ -637,8 +655,8 @@ handle_info(Info, State) ->
warning_msg("received unknown info: ~n~p", [Info]),
{noreply, State}.
-terminate(_Reason, #state{data = Data}) ->
- catch snmpa_mib_data:close(Data),
+terminate(_Reason, #state{data = Data, mib_data_mod = Mod}) ->
+ catch Mod:close(Data),
ok.
@@ -663,8 +681,13 @@ terminate(_Reason, #state{data = Data}) ->
%% S2 = #state{data = Data, meo = MEO, teo = TEO, backup = B, cache = Cache},
%% {ok, S2};
-code_change(_Vsn, State, _Extra) ->
- {ok, State}.
+code_change({down, _Vsn}, #state{mib_data_mod = Mod} = State, _Extra) ->
+ Data = Mod:code_change(down, Data0),
+ {ok, State#state{data = Data}};
+
+code_change(_Vsn, #state{mib_data_mod = Mod} = State, _Extra) ->
+ Data = Mod:code_change(up, Data0),
+ {ok, State#state{data = Data}}.
%%-----------------------------------------------------------------
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