1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
%%
%% %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 Common Test Framework Event Handler
%%%
%%% <p>This module implements an event handler that the CT Master
%%% uses to handle status and progress notifications sent to the
%%% master node during test runs. This module may be used as a
%%% template for other event handlers that can be plugged in to
%%% handle logging and reporting on the master node.</p>
-module(ct_master_event).
-behaviour(gen_event).
%% API
-export([start_link/0, add_handler/0, add_handler/1, stop/0]).
-export([notify/1, sync_notify/1]).
%% gen_event callbacks
-export([init/1, handle_event/2, handle_call/2,
handle_info/2, terminate/2, code_change/3]).
-include("ct_event.hrl").
-include("ct_util.hrl").
-record(state, {}).
%%====================================================================
%% gen_event callbacks
%%====================================================================
%%--------------------------------------------------------------------
%% Function: start_link() -> {ok,Pid} | {error,Error}
%% Description: Creates an event manager.
%%--------------------------------------------------------------------
start_link() ->
gen_event:start_link({local,?CT_MEVMGR}).
%%--------------------------------------------------------------------
%% Function: add_handler() -> ok | {'EXIT',Reason} | term()
%% Description: Adds an event handler
%%--------------------------------------------------------------------
add_handler() ->
gen_event:add_handler(?CT_MEVMGR_REF,?MODULE,[]).
add_handler(Args) ->
gen_event:add_handler(?CT_MEVMGR_REF,?MODULE,Args).
%%--------------------------------------------------------------------
%% Function: stop() -> ok
%% Description: Stops the event manager
%%--------------------------------------------------------------------
stop() ->
case flush() of
{error,Reason} ->
ct_master_logs:log("Error",
"No response from CT Master Event.\n"
"Reason = ~p\n"
"Terminating now!\n",[Reason]),
%% communication with event manager fails, kill it
catch exit(whereis(?CT_MEVMGR_REF), kill);
_ ->
gen_event:stop(?CT_MEVMGR_REF)
end.
flush() ->
try gen_event:call(?CT_MEVMGR_REF,?MODULE,flush,1800000) of
flushing ->
timer:sleep(1),
flush();
done ->
ok;
Error = {error,_} ->
Error
catch
_:Reason ->
{error,Reason}
end.
%%--------------------------------------------------------------------
%% Function: notify(Event) -> ok
%% Description: Asynchronous notification to event manager.
%%--------------------------------------------------------------------
notify(Event) ->
gen_event:notify(?CT_MEVMGR_REF,Event).
%%--------------------------------------------------------------------
%% Function: sync_notify(Event) -> ok
%% Description: Synchronous notification to event manager.
%%--------------------------------------------------------------------
sync_notify(Event) ->
gen_event:sync_notify(?CT_MEVMGR_REF,Event).
%%====================================================================
%% 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(_) ->
ct_master_logs:log("CT Master Event Handler started","",[]),
{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.
%%--------------------------------------------------------------------
handle_event(#event{name=start_logging,node=Node,data=RunDir},State) ->
ct_master_logs:log("CT Master Event Handler","Got ~ts from ~w",[RunDir,Node]),
ct_master_logs:nodedir(Node,RunDir),
{ok,State};
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(flush,State) ->
case process_info(self(),message_queue_len) of
{message_queue_len,0} ->
{ok,done,State};
_ ->
{ok,flushing,State}
end.
%%--------------------------------------------------------------------
%% 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) ->
ct_master_logs:log("CT Master Event Handler stopping","",[]),
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) ->
% io:format(_Str,_Args),
ok.
|
