%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2017-2018. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
-module(logger_filters).
-export([domain/2,
level/2,
progress/2,
remote_gl/2]).
-include("logger_internal.hrl").
-define(IS_ACTION(A), (A==log orelse A==stop)).
-spec domain(LogEvent,Extra) -> logger:filter_return() when
LogEvent :: logger:log_event(),
Extra :: {Action,Compare,MatchDomain},
Action :: log | stop,
Compare :: super | sub | equal | not_equal | undefined,
MatchDomain :: list(atom()).
domain(#{meta:=Meta}=LogEvent,{Action,Compare,MatchDomain})
when ?IS_ACTION(Action) andalso
(Compare==super orelse
Compare==sub orelse
Compare==equal orelse
Compare==not_equal orelse
Compare==undefined) andalso
is_list(MatchDomain) ->
filter_domain(Compare,Meta,MatchDomain,on_match(Action,LogEvent));
domain(LogEvent,Extra) ->
erlang:error(badarg,[LogEvent,Extra]).
-spec level(LogEvent,Extra) -> logger:filter_return() when
LogEvent :: logger:log_event(),
Extra :: {Action,Operator,MatchLevel},
Action :: log | stop,
Operator :: neq | eq | lt | gt | lteq | gteq,
MatchLevel :: logger:level().
level(#{level:=L1}=LogEvent,{Action,Op,L2})
when ?IS_ACTION(Action) andalso
(Op==neq orelse
Op==eq orelse
Op==lt orelse
Op==gt orelse
Op==lteq orelse
Op==gteq) andalso
?IS_LEVEL(L2) ->
filter_level(Op,L1,L2,on_match(Action,LogEvent));
level(LogEvent,Extra) ->
erlang:error(badarg,[LogEvent,Extra]).
-spec progress(LogEvent,Extra) -> logger:filter_return() when
LogEvent :: logger:log_event(),
Extra :: log | stop.
progress(LogEvent,Action) when ?IS_ACTION(Action) ->
filter_progress(LogEvent,on_match(Action,LogEvent));
progress(LogEvent,Action) ->
erlang:error(badarg,[LogEvent,Action]).
-spec remote_gl(LogEvent,Extra) -> logger:filter_return() when
LogEvent :: logger:log_event(),
Extra :: log | stop.
remote_gl(LogEvent,Action) when ?IS_ACTION(Action) ->
filter_remote_gl(LogEvent,on_match(Action,LogEvent));
remote_gl(LogEvent,Action) ->
erlang:error(badarg,[LogEvent,Action]).
%%%-----------------------------------------------------------------
%%% Internal
filter_domain(super,#{domain:=Domain},MatchDomain,OnMatch) ->
is_prefix(Domain,MatchDomain,OnMatch);
filter_domain(sub,#{domain:=Domain},MatchDomain,OnMatch) ->
is_prefix(MatchDomain,Domain,OnMatch);
filter_domain(equal,#{domain:=Domain},Domain,OnMatch) ->
OnMatch;
filter_domain(not_equal,#{domain:=Domain},MatchDomain,OnMatch)
when Domain=/=MatchDomain ->
OnMatch;
filter_domain(Compare,Meta,_,OnMatch) ->
case maps:is_key(domain,Meta) of
false when Compare==undefined; Compare==not_equal -> OnMatch;
_ -> ignore
end.
is_prefix(D1,D2,OnMatch) when is_list(D1), is_list(D2) ->
case lists:prefix(D1,D2) of
true -> OnMatch;
false -> ignore
end;
is_prefix(_,_,_) ->
ignore.
filter_level(Op,L1,L2,OnMatch) ->
case logger:compare_levels(L1,L2) of
eq when Op==eq; Op==lteq; Op==gteq -> OnMatch;
lt when Op==lt; Op==lteq; Op==neq -> OnMatch;
gt when Op==gt; Op==gteq; Op==neq -> OnMatch;
_ -> ignore
end.
filter_progress(#{msg:={report,#{label:={_,progress}}}},OnMatch) ->
OnMatch;
filter_progress(_,_) ->
ignore.
filter_remote_gl(#{meta:=#{gl:=GL}},OnMatch) when node(GL)=/=node() ->
OnMatch;
filter_remote_gl(_,_) ->
ignore.
on_match(log,LogEvent) -> LogEvent;
on_match(stop,_) -> stop.
