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path: root/lib/common_test/src/ct_master_status.erl
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%%
%% %CopyrightBegin%
%% 
%% Copyright Ericsson AB 2006-2016. 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%
%%

%%% @doc Logging functionality for Common Test Master.
%%%
%%% <p>This module keeps a list of <code>{Node,Status}</code>
%%% tuples. It is possible to anytime during a test run get
%%% a snapshot of the test status. The module is an event
%%% handler for the master event manager.</p>
-module(ct_master_status).

-behaviour(gen_event).

-export([]).

%% gen_event callbacks
-export([init/1, handle_event/2, handle_call/2, 
	 handle_info/2, terminate/2, code_change/3]).

-include("ct_event.hrl").

-record(state, {status=[]}).

%%====================================================================
%% gen_event callbacks
%%====================================================================
%%--------------------------------------------------------------------
%% Function: init(Args) -> {ok, State}
%% Description: Whenever a new event handler is added to an event manager,
%% this function is called to initialize the event handler.
%%--------------------------------------------------------------------
init(_) ->
    {ok,#state{}}.

%%--------------------------------------------------------------------
%% Function:  
%% handle_event(Event, State) -> {ok, State} |
%%                               {swap_handler, Args1, State1, Mod2, Args2} |
%%                               remove_handler
%% Description:Whenever an event manager receives an event sent using
%% gen_event:notify/2 or gen_event:sync_notify/2, this function is called for
%% each installed event handler to handle the event. 
%%--------------------------------------------------------------------

%%============================== EVENTS ==============================
%%
%% Events documented in ct_event, plus:
%%
%% Name = pending_make
%% Data = {Node,Dir}
%%
%% Name = go_ahead_make
%% Data = {Node,Dir}
%%
handle_event(#event{name=Name,node=Node,data=Data},State) ->
    print("~n=== ~w ===~n", [?MODULE]),
    print("~w on ~w: ~p~n", [Name,Node,Data]),
    {ok,State}.

%%--------------------------------------------------------------------
%% Function: 
%% handle_call(Request, State) -> {ok, Reply, State} |
%%                                {swap_handler, Reply, Args1, State1, 
%%                                  Mod2, Args2} |
%%                                {remove_handler, Reply}
%% Description: Whenever an event manager receives a request sent using
%% gen_event:call/3,4, this function is called for the specified event 
%% handler to handle the request.
%%--------------------------------------------------------------------
handle_call(_Req, State) ->
    Reply = ok,
    {ok, Reply, State}.

%%--------------------------------------------------------------------
%% Function: 
%% handle_info(Info, State) -> {ok, State} |
%%                             {swap_handler, Args1, State1, Mod2, Args2} |
%%                              remove_handler
%% Description: This function is called for each installed event handler when
%% an event manager receives any other message than an event or a synchronous
%% request (or a system message).
%%--------------------------------------------------------------------
handle_info(_Info, State) ->
    {ok, State}.

%%--------------------------------------------------------------------
%% Function: terminate(Reason, State) -> ok
%% Description: Whenever an event handler is deleted from an event manager,
%% this function is called. It should be the opposite of Module:init/1 and 
%% do any necessary cleaning up. 
%%--------------------------------------------------------------------
terminate(_Reason, _State) ->
    ok.

%%--------------------------------------------------------------------
%% Function: code_change(OldVsn, State, Extra) -> {ok, NewState} 
%% Description: Convert process state when code is changed
%%--------------------------------------------------------------------
code_change(_OldVsn, State, _Extra) ->
    {ok, State}.

%%--------------------------------------------------------------------
%%% Internal functions
%%--------------------------------------------------------------------

print(_Str,_Args) ->
    ok.