diff options
Diffstat (limited to 'test/etap')
| -rw-r--r-- | test/etap/210-os-proc-pool.t | 161 | ||||
| -rw-r--r-- | test/etap/Makefile.am | 4 |
2 files changed, 164 insertions, 1 deletions
diff --git a/test/etap/210-os-proc-pool.t b/test/etap/210-os-proc-pool.t new file mode 100644 index 00000000..b68d66be --- /dev/null +++ b/test/etap/210-os-proc-pool.t @@ -0,0 +1,161 @@ +#!/usr/bin/env escript +%% -*- erlang -*- +% 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. + +main(_) -> + test_util:init_code_path(), + + etap:plan(19), + case (catch test()) of + ok -> + etap:end_tests(); + Other -> + etap:diag(io_lib:format("Test died abnormally: ~p", [Other])), + etap:bail(Other) + end, + ok. + + +test() -> + couch_server_sup:start_link(test_util:config_files()), + couch_config:set("query_server_config", "os_process_limit", "3", false), + + test_pool_full(), + test_client_unexpected_exit(), + + couch_server_sup:stop(), + ok. + + +test_pool_full() -> + Client1 = spawn_client(), + Client2 = spawn_client(), + Client3 = spawn_client(), + + etap:diag("Check that we can spawn the max number of processes."), + etap:is(ping_client(Client1), ok, "Client 1 started ok."), + etap:is(ping_client(Client2), ok, "Client 2 started ok."), + etap:is(ping_client(Client3), ok, "Client 3 started ok."), + + Proc1 = get_client_proc(Client1, "1"), + Proc2 = get_client_proc(Client2, "2"), + Proc3 = get_client_proc(Client3, "3"), + etap:isnt(Proc1, Proc2, "Clients 1 and 2 got different procs."), + etap:isnt(Proc2, Proc3, "Clients 2 and 3 got different procs."), + + etap:diag("Check that client 4 blocks waiting for a process."), + Client4 = spawn_client(), + etap:is(ping_client(Client4), timeout, "Client 4 blocked while waiting."), + + etap:diag("Check that stopping a client gives up its process."), + etap:is(stop_client(Client1), ok, "First client stopped."), + + etap:diag("And check that our blocked process has been unblocked."), + etap:is(ping_client(Client4), ok, "Client was unblocked."), + + Proc4 = get_client_proc(Client4, "4"), + etap:is(Proc4, Proc1, "Client 4 got proc that client 1 got before."), + + lists:map(fun(C) -> ok = stop_client(C) end, [Client2, Client3, Client4]). + + +test_client_unexpected_exit() -> + Client1 = spawn_client(), + Client2 = spawn_client(), + Client3 = spawn_client(), + + etap:diag("Check that up to os_process_limit clients started."), + etap:is(ping_client(Client1), ok, "Client 1 started ok."), + etap:is(ping_client(Client2), ok, "Client 2 started ok."), + etap:is(ping_client(Client3), ok, "Client 3 started ok."), + + Proc1 = get_client_proc(Client1, "1"), + Proc2 = get_client_proc(Client2, "2"), + Proc3 = get_client_proc(Client3, "3"), + etap:isnt(Proc1, Proc2, "Clients 1 and 2 got different procs."), + etap:isnt(Proc2, Proc3, "Clients 2 and 3 got different procs."), + + etap:diag("Check that killing a client frees an os_process."), + etap:is(kill_client(Client1), ok, "Client 1 died all right."), + + etap:diag("Check that a new client is not blocked on boot."), + Client4 = spawn_client(), + etap:is(ping_client(Client4), ok, "New client booted without blocking."), + + Proc4 = get_client_proc(Client4, "4"), + etap:isnt(Proc4, Proc1, + "Client 4 got a proc different from the one client 1 got before."), + etap:isnt(Proc4, Proc2, "Client 4's proc different from client 2's proc."), + etap:isnt(Proc4, Proc3, "Client 4's proc different from client 3's proc."), + + lists:map(fun(C) -> ok = stop_client(C) end, [Client2, Client3, Client4]). + + +spawn_client() -> + Parent = self(), + Ref = make_ref(), + Pid = spawn(fun() -> + Proc = couch_query_servers:get_os_process(<<"javascript">>), + loop(Parent, Ref, Proc) + end), + {Pid, Ref}. + + +ping_client({Pid, Ref}) -> + Pid ! ping, + receive + {pong, Ref} -> ok + after 3000 -> timeout + end. + + +get_client_proc({Pid, Ref}, ClientName) -> + Pid ! get_proc, + receive + {proc, Ref, Proc} -> Proc + after 3000 -> + etap:bail("Timeout getting client " ++ ClientName ++ " proc.") + end. + + +stop_client({Pid, Ref}) -> + Pid ! stop, + receive + {stop, Ref} -> ok + after 3000 -> timeout + end. + + +kill_client({Pid, Ref}) -> + Pid ! die, + receive + {die, Ref} -> ok + after 3000 -> timeout + end. + + +loop(Parent, Ref, Proc) -> + receive + ping -> + Parent ! {pong, Ref}, + loop(Parent, Ref, Proc); + get_proc -> + Parent ! {proc, Ref, Proc}, + loop(Parent, Ref, Proc); + stop -> + couch_query_servers:ret_os_process(Proc), + Parent ! {stop, Ref}; + die -> + Parent ! {die, Ref}, + exit(some_error) + end. diff --git a/test/etap/Makefile.am b/test/etap/Makefile.am index ecbc3a93..c3a4ddab 100644 --- a/test/etap/Makefile.am +++ b/test/etap/Makefile.am @@ -87,4 +87,6 @@ EXTRA_DIST = \ 180-http-proxy.ini \ 180-http-proxy.t \ 190-oauth.t \ - 200-view-group-no-db-leaks.t + 200-view-group-no-db-leaks.t \ + 210-os-proc-pool.t + |