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bsc: Add tests for MGW pool features 

Add a couple tests to validate some MGW pool features, like load
balancing and skip selection blocked MGWs from the pool.

Related: SYS#5987
Change-Id: I6a8c30309be406e37190dc67b6ee5af13e1b9e68
This commit is contained in:
Pau Espin 2022-10-20 19:34:43 +02:00
parent 3c63053fe8
commit d2355e8f2b
1 changed files with 113 additions and 0 deletions
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113
bsc/BSC_Tests.ttcn
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@ -11822,6 +11822,112 @@ testcase TC_chan_alloc_algo_ass_dynamic() runs on test_CT {
f_shutdown_helper();
}
private function f_vty_mgw_enable(integer mgw_nr := 1) runs on test_CT {
var rof_charstring cmds := {
"remote-ip " & mp_test_ip,
"remote-port " & int2str(2427 + mgw_nr)
};
f_vty_config3(BSCVTY, {"network", "mgw " & int2str(mgw_nr)}, cmds);
f_vty_transceive(BSCVTY, "mgw " & int2str(mgw_nr) & " reconnect")
}
private function f_vty_mgw_disable(integer mgw_nr := 1) runs on test_CT {
f_vty_config3(BSCVTY, {"network"}, { "no mgw " &int2str(mgw_nr) });
}
private function f_vty_mgw_block(integer mgw_nr := 1, boolean blocked := true) runs on test_CT {
var charstring arg;
if (blocked) {
arg := "block";
} else {
arg := "unblock";
}
f_vty_transceive(BSCVTY, "mgw " & int2str(mgw_nr) & " " & arg);
}
private const charstring COORD_CMD_ESTABLISHED := "COORD_CMD_ESTABLISHED";
private function f_TC_mgwpool_call_seq_1(charstring id) runs on MSC_ConnHdlr {
var template PDU_BSSAP exp_compl := f_gen_exp_compl();
var PDU_BSSAP ass_cmd := f_gen_ass_req();
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
ass_cmd.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR}));
f_establish_fully(ass_cmd, exp_compl);
COORD.send(COORD_CMD_ESTABLISHED);
COORD.receive(COORD_CMD_ESTABLISHED);
f_perform_clear()
f_create_mgcp_delete_ep(g_media.mgcp_ep);
}
private function f_TC_mgwpool_call_seq_2(charstring id) runs on MSC_ConnHdlr {
var template PDU_BSSAP exp_compl := f_gen_exp_compl();
var PDU_BSSAP ass_cmd := f_gen_ass_req();
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
ass_cmd.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR}));
COORD.receive(COORD_CMD_ESTABLISHED);
f_establish_fully(ass_cmd, exp_compl);
COORD.send(COORD_CMD_ESTABLISHED);
f_perform_clear()
f_create_mgcp_delete_ep(g_media.mgcp_ep);
}
/* Test load is spread around 2 available MGWs */
testcase TC_mgwpool_all_used() runs on test_CT {
var TestHdlrParams pars1 := f_gen_test_hdlr_pars();
var MSC_ConnHdlr vc_conn1;
pars1.mgwpool_idx := 0;
var TestHdlrParams pars2 := f_gen_test_hdlr_pars();
var MSC_ConnHdlr vc_conn2;
pars2.mgwpool_idx := 1;
f_init(1, true, nr_mgw := 2);
f_sleep(1.0);
f_vty_mgw_enable(1);
vc_conn1 := f_start_handler_create(pars1);
vc_conn2 := f_start_handler_create(pars2);
connect(vc_conn1:COORD, vc_conn2:COORD);
f_start_handler_run(vc_conn1, refers(f_TC_mgwpool_call_seq_1), pars1);
f_start_handler_run(vc_conn2, refers(f_TC_mgwpool_call_seq_2), pars2);
vc_conn1.done;
vc_conn2.done;
f_vty_mgw_disable(1);
f_shutdown_helper();
}
/* Test blocked MGW in the pool are not selected */
testcase TC_mgwpool_blocked_not_used() runs on test_CT {
var TestHdlrParams pars1 := f_gen_test_hdlr_pars();
var MSC_ConnHdlr vc_conn1;
pars1.mgwpool_idx := 0;
var TestHdlrParams pars2 := f_gen_test_hdlr_pars();
var MSC_ConnHdlr vc_conn2;
pars2.mgwpool_idx := 0; /* expect it in the first one, since the second will be blocked */
pars2.media_nr := 2;
f_init(1, true, nr_mgw := 2);
f_sleep(1.0);
f_vty_mgw_enable(1);
f_vty_mgw_block(1, true);
vc_conn1 := f_start_handler_create(pars1);
vc_conn2 := f_start_handler_create(pars2);
connect(vc_conn1:COORD, vc_conn2:COORD);
f_start_handler_run(vc_conn1, refers(f_TC_mgwpool_call_seq_1), pars1);
f_start_handler_run(vc_conn2, refers(f_TC_mgwpool_call_seq_2), pars2);
vc_conn1.done;
vc_conn2.done;
f_vty_mgw_disable(1);
f_shutdown_helper();
}
control {
/* CTRL interface testing */
execute( TC_ctrl_msc_connection_status() );
@ -12156,6 +12262,13 @@ control {
execute( TC_chan_alloc_algo_descending() );
execute( TC_chan_alloc_algo_ass_dynamic() );
/* MGW pool */
/* TODO: this conditional canbe dropped once osmo-bsc >1.10.0 is released: */
if (Misc_Helpers.f_osmo_repo_is("nightly")) {
execute( TC_mgwpool_all_used() );
execute( TC_mgwpool_blocked_not_used() );
}
/* Run TC_ho_out_of_this_bsc last, because it may trigger a segfault before osmo-bsc's patch
* with change-id I5a3345ab0005a73597f5c27207480912a2f5aae6 */
execute( TC_ho_out_of_this_bsc() );