aboutsummaryrefslogtreecommitdiffstats
path: root/lib/kernel/test/erl_boot_server_SUITE.erl
blob: ad71e0c1bdea47ee2a324b7b34e6d3fd05cd402b (plain) (blame)
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
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
%%
%% %CopyrightBegin%
%% 
%% Copyright Ericsson AB 1996-2010. 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
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
%% 
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
%% 
%% %CopyrightEnd%
%%
-module(erl_boot_server_SUITE).

-include_lib("test_server/include/test_server.hrl").

-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, init_per_group/2,end_per_group/2]).

-export([start/1, start_link/1, stop/1, add/1, delete/1, responses/1]).

%%-----------------------------------------------------------------
%% Test suite for erl_boot_server.
%%
%% This module is mainly tested in the erl_prim_loader_SUITE,
%% but the interface functions are tested here.
%%
%% Changed for the new erl_boot_server for R3A by Bjorn Gustavsson.
%%-----------------------------------------------------------------

suite() -> [{suite_callbacks,[ts_install_scb]}].

all() -> 
    [start, start_link, stop, add, delete, responses].

groups() -> 
    [].

init_per_suite(Config) ->
    Config.

end_per_suite(_Config) ->
    ok.

init_per_group(_GroupName, Config) ->
    Config.

end_per_group(_GroupName, Config) ->
    Config.


-define(all_ones, {255, 255, 255, 255}).

start(doc) -> "Tests the erl_boot_server:start/1 function.";
start(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(50)),
    ?line [Host1, Host2|_] = good_hosts(Config),

    %% Bad arguments.
    BadHost = "bad__host",
    ?line {error, {badarg, {}}} = erl_boot_server:start({}),
    ?line {error, {badarg, atom}} = erl_boot_server:start(atom),
    ?line {error, {badarg, [atom, BadHost]}} =
	erl_boot_server:start([atom, BadHost]),
    ?line {error, {badarg, [Host1, BadHost]}} =
	erl_boot_server:start([Host1, BadHost]),

    %% Test once.
    ?line {ok, Pid1} = erl_boot_server:start([Host1]),
    ?line {error, {already_started, Pid1}} =
	erl_boot_server:start([Host1]),
    ?line exit(Pid1, kill),

    %% Test again.
    test_server:sleep(1),
    ?line {ok, Pid2} = erl_boot_server:start([Host1, Host2]),
    ?line {error, {already_started, Pid2}} =
	erl_boot_server:start([Host1, Host2]),
    ?line exit(Pid2, kill),
    test_server:sleep(1),

    ?line test_server:timetrap_cancel(Dog),
    ok.

start_link(doc) -> "Tests the erl_boot_server:start_link/1 function.";
start_link(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line [Host1, Host2|_] = good_hosts(Config),

    OldFlag = process_flag(trap_exit, true),
    ?line {error, {badarg, {}}} = erl_boot_server:start_link({}),
    ?line {error, {badarg, atom}} = erl_boot_server:start_link(atom),
    ?line BadHost = "bad__host",
    ?line {error, {badarg, [atom, BadHost]}} =
	erl_boot_server:start_link([atom, BadHost]),

    ?line {ok, Pid1} = erl_boot_server:start_link([Host1]),
    ?line {error, {already_started, Pid1}} =
	erl_boot_server:start_link([Host1]),
    ?line shutdown(Pid1),

    ?line {ok, Pid2} = erl_boot_server:start_link([Host1, Host2]),
    ?line {error, {already_started, Pid2}} =
	erl_boot_server:start_link([Host1, Host2]),
    ?line shutdown(Pid2),
    process_flag(trap_exit, OldFlag),

    ?line test_server:timetrap_cancel(Dog),
    ok.

stop(doc) -> "Tests that no processes are left if a boot server is killed.";
stop(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(50)),
    ?line [Host1|_] = good_hosts(Config),

    %% Start a boot server and kill it.  Make sure that any helper processes
    %% dies.
    % Make sure the inet_gethost_native server is already started,
    % otherwise it will make this test fail:
    ?line inet:getaddr(localhost, inet),
    ?line Before = processes(),
    ?line {ok, Pid} = erl_boot_server:start([Host1]),
    ?line New = processes() -- [Pid|Before],
    ?line exit(Pid, kill),
    ?line receive after 100 -> ok end,
    ?line case [P || P <- New, is_process_alive(P)] of
	      [] ->
		  ok;
	      NotKilled ->
		  test_server:fail({not_killed, NotKilled})
	  end,
    ?line test_server:timetrap_cancel(Dog),
    ok.

add(doc) -> "Tests the erl_boot_server:add/1 function.";
add(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line OldFlag = process_flag(trap_exit, true),
    ?line {ok, Pid1} = erl_boot_server:start_link([]),
    ?line [] = erl_boot_server:which_slaves(),
    ?line [Host1, Host2, Host3|_] = good_hosts(Config),

    %% Try bad values.
    ?line {error, {badarg, {}}} = erl_boot_server:add_slave({}),
    ?line {error, {badarg, [atom]}} = erl_boot_server:add_slave([atom]),
    ?line BadHost = "bad__host",
    ?line {error, {badarg, BadHost}} = erl_boot_server:add_slave(BadHost),
    ?line [] = erl_boot_server:which_slaves(),

    %% Add good host names.
    ?line {ok, Ip1} = inet:getaddr(Host1, inet),
    ?line {ok, Ip2} = inet:getaddr(Host2, inet),
    ?line {ok, Ip3} = inet:getaddr(Host3, inet),
    ?line MIp1 = {?all_ones, Ip1},
    ?line MIp2 = {?all_ones, Ip2},
    ?line MIp3 = {?all_ones, Ip3},
    ?line ok = erl_boot_server:add_slave(Host1),
    ?line [MIp1] = erl_boot_server:which_slaves(),
    ?line ok = erl_boot_server:add_slave(Host2),
    ?line M_Ip1_Ip2 = lists:sort([MIp1, MIp2]),
    ?line M_Ip1_Ip2 = lists:sort(erl_boot_server:which_slaves()),
    ?line ok = erl_boot_server:add_slave(Host3),
    ?line M_Ip1_Ip2_Ip3 = lists:sort([MIp3|M_Ip1_Ip2]),
    ?line M_Ip1_Ip2_Ip3 = erl_boot_server:which_slaves(),

    %% Add duplicate names.
    ?line ok = erl_boot_server:add_slave(Host3),
    ?line M_Ip1_Ip2_Ip3 = erl_boot_server:which_slaves(),

    %% More bad names.
    ?line {error, {badarg, BadHost}} = erl_boot_server:add_slave(BadHost),
    ?line M_Ip1_Ip2_Ip3 = erl_boot_server:which_slaves(),

    %% Cleanup.
    ?line shutdown(Pid1),
    ?line process_flag(trap_exit, OldFlag),
    ?line test_server:timetrap_cancel(Dog),
    ok.

delete(doc) -> "Tests the erl_boot_server:delete/1 function.";
delete(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line OldFlag = process_flag(trap_exit, true),

    ?line [Host1, Host2, Host3|_] = good_hosts(Config),
    ?line {ok, Ip1} = inet:getaddr(Host1, inet),
    ?line {ok, Ip2} = inet:getaddr(Host2, inet),
    ?line {ok, Ip3} = inet:getaddr(Host3, inet),
    ?line MIp1 = {?all_ones, Ip1},
    ?line MIp2 = {?all_ones, Ip2},
    ?line MIp3 = {?all_ones, Ip3},

    ?line {ok, Pid1} = erl_boot_server:start_link([Host1, Host2, Host3]),
    ?line M_Ip123 = lists:sort([MIp1, MIp2, MIp3]),
    ?line M_Ip123 = erl_boot_server:which_slaves(),

    %% Do some bad attempts and check that the list of slaves is intact.
    ?line {error, {badarg, {}}} = erl_boot_server:delete_slave({}),
    ?line {error, {badarg, [atom]}} = erl_boot_server:delete_slave([atom]),
    ?line BadHost = "bad__host",
    ?line {error, {badarg, BadHost}} = erl_boot_server:delete_slave(BadHost),
    ?line M_Ip123 = erl_boot_server:which_slaves(),

    %% Delete Host2 and make sure it's gone.
    ?line ok = erl_boot_server:delete_slave(Host2),
    ?line M_Ip13 = lists:sort([MIp1, MIp3]),
    ?line M_Ip13 = erl_boot_server:which_slaves(),

    ?line ok = erl_boot_server:delete_slave(Host1),
    ?line [MIp3] = erl_boot_server:which_slaves(),
    ?line ok = erl_boot_server:delete_slave(Host1),
    ?line [MIp3] = erl_boot_server:which_slaves(),

    ?line {error, {badarg, BadHost}} = erl_boot_server:delete_slave(BadHost),
    ?line [MIp3] = erl_boot_server:which_slaves(),

    ?line ok = erl_boot_server:delete_slave(Ip3),
    ?line [] = erl_boot_server:which_slaves(),
    ?line ok = erl_boot_server:delete_slave(Ip3),
    ?line [] = erl_boot_server:which_slaves(),

    ?line shutdown(Pid1),
    ?line process_flag(trap_exit, OldFlag),
    ?line test_server:timetrap_cancel(Dog),
    ok.

responses(doc) -> "Tests erl_boot_server responses to slave requests.";
responses(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(30)),
    ?line process_flag(trap_exit, true),
    %% Copy from inet_boot.hrl
    EBOOT_PORT = 4368,
    EBOOT_REQUEST = "EBOOTQ",
    EBOOT_REPLY =   "EBOOTR",

    ?line {ok,Host} = inet:gethostname(),
    ?line {ok,Ip} = inet:getaddr(Host, inet),

    ThisVer = erlang:system_info(version),

    ?line {ok,BootPid} = erl_boot_server:start_link([Host]),

    %% Send junk
    ?line S1 = open_udp(),
    ?line prim_inet:sendto(S1, Ip, EBOOT_PORT, ["0"]),
    receive
	What ->
	    ?line close_udp(S1),
	    ?line ?t:fail({"got unexpected response",What})
    after 100 ->
	    ok
    end,

    %% Req from a slave with same erlang vsn.
    ?line S2 = open_udp(),
    ?line prim_inet:sendto(S2, Ip, EBOOT_PORT, [EBOOT_REQUEST,ThisVer]),
    receive
	{udp,S2,Ip,_Port1,Resp1} ->
	    ?line close_udp(S2),
	    ?line EBOOT_REPLY = string:substr(Resp1, 1, length(EBOOT_REPLY)),
	    ?line Rest1 = string:substr(Resp1, length(EBOOT_REPLY)+1, length(Resp1)),
	    ?line [_,_,_ | ThisVer] = Rest1
    after 2000 ->
	    ?line close_udp(S2),
	    ?line ?t:fail("no boot server response; same vsn")
    end,
    
    %% Req from a slave with other erlang vsn.
    ?line S3 = open_udp(),
    ?line prim_inet:sendto(S3, Ip, EBOOT_PORT, [EBOOT_REQUEST,"1.0"]),
    receive
	Anything ->
	    ?line close_udp(S3),
	    ?line ?t:fail({"got unexpected response",Anything})
    after 100 ->
	    ok
    end,

    %% Kill the boot server and wait for it to disappear.
    ?line unlink(BootPid),
    ?line BootPidMref = erlang:monitor(process, BootPid),
    ?line exit(BootPid, kill),
    receive
	{'DOWN',BootPidMref,_,_,_} -> ok
    end,

    ?line {ok,BootPid2} = erl_boot_server:start_link(["127.0.0.1"]),

    %% Req from slave with invalid ip address.
    ?line S4 = open_udp(),
    Ret =
	case Ip of
	    {127,0,0,1} ->
		{comment,"IP address for this host is 127.0.0.1"};
	    _ ->
		?line prim_inet:sendto(S4, Ip, EBOOT_PORT,
				       [EBOOT_REQUEST,ThisVer]),
		receive
		    Huh ->
			?line close_udp(S4),
			?line ?t:fail({"got unexpected response",Huh})
		after 100 ->
			ok
		end
	end,

    ?line unlink(BootPid2),
    ?line exit(BootPid2, kill),

    %% Now wait for any late unexpected messages.
    receive
	Whatever ->
	    ?line ?t:fail({unexpected_message,Whatever})
    after 4000 ->
	    ?line close_udp(S1),
	    ?line close_udp(S3),
	    ?line close_udp(S4),
	    ok
    end,

    ?line test_server:timetrap_cancel(Dog),
    Ret.

shutdown(Pid) ->
    exit(Pid, shutdown),
    receive
	{'EXIT', Pid, shutdown} ->
	    ok
    after 1000 ->
	    %% The timeout used to be 1 ms, which could be too short time for the
	    %% SMP emulator on a slow computer with one CPU.
	    test_server:fail(shutdown)
    end.

good_hosts(_Config) ->
    %% XXX The hostnames should not be hard-coded like this. Really!

    {ok, GoodHost1} = inet:gethostname(),
    GoodHost2 = "gandalf",
    GoodHost3 = "sauron",
    [GoodHost1, GoodHost2, GoodHost3].

open_udp() ->
    ?line {ok, S} = prim_inet:open(udp, inet),
    ?line ok = prim_inet:setopts(S, [{mode,list},{active,true}, 
				     {deliver,term},{broadcast,true}]),
    ?line {ok,_} = prim_inet:bind(S, {0,0,0,0}, 0),
    S.

close_udp(S) ->
    prim_inet:close(S).