[PATCH] openbsc[master]: msc: add counters to track call attempts/active/success/failed

[lynxis lazus]

Review at  https://gerrit.osmocom.org/795

msc: add counters to track call attempts/active/success/failed

active_calls describe all calls in active state.
call.complete Call got terminated by disconnect requested either by MS or MSC.
call.incomplete Call got terminated by any other reason.
call.active Calls reached active state.
Change-Id: I49b93af2e6a0ba16c2fb00b7b83974e8a6a16df3
---
M openbsc/include/openbsc/gsm_data.h
M openbsc/src/libbsc/net_init.c
M openbsc/src/libmsc/gsm_04_08.c
3 files changed, 42 insertions(+), 1 deletion(-)


  git pull ssh://gerrit.osmocom.org:29418/openbsc refs/changes/95/795/1

diff --git a/openbsc/include/openbsc/gsm_data.h b/openbsc/include/openbsc/gsm_data.h
index 2f09af1..7879ea6 100644
--- a/openbsc/include/openbsc/gsm_data.h
+++ b/openbsc/include/openbsc/gsm_data.h
@@ -209,6 +209,9 @@
 	MSC_CTR_CALL_MO_CONNECT_ACK,
 	MSC_CTR_CALL_MT_SETUP,
 	MSC_CTR_CALL_MT_CONNECT,
+	MSC_CTR_CALL_ACTIVE,
+	MSC_CTR_CALL_COMPLETE,
+	MSC_CTR_CALL_INCOMPLETE,
 };
 
 static const struct rate_ctr_desc msc_ctr_description[] = {
@@ -229,6 +232,9 @@
 	[MSC_CTR_CALL_MO_CONNECT_ACK] = 		{"call.mo_connect_ack", "Received a connect ack from MS of a MO call. Call is now succesful connected up."},
 	[MSC_CTR_CALL_MT_SETUP] = 		{"call.mt_setup", "Sent setup requests to the MS (MT)."},
 	[MSC_CTR_CALL_MT_CONNECT] = 		{"call.mt_connect", "Sent a connect to the MS (MT)."},
+	[MSC_CTR_CALL_ACTIVE] =			{"call.active", "Count amount of calls reached state active."},
+	[MSC_CTR_CALL_COMPLETE] = 		{"call.complete", "Count amount of calls which got terminated by disconnect req or ind after reaching active state."},
+	[MSC_CTR_CALL_INCOMPLETE] = 		{"call.incomplete", "Call got terminated by any other reason."},
 };
 
 
@@ -292,7 +298,7 @@
 
 	struct rate_ctr_group *bsc_ctrs;
 	struct rate_ctr_group *msc_ctrs;
-
+	struct osmo_counter *active_calls;
 
 	/* layer 4 */
 	struct mncc_sock_state *mncc_state;
diff --git a/openbsc/src/libbsc/net_init.c b/openbsc/src/libbsc/net_init.c
index 37ba3c0..59a3e2c 100644
--- a/openbsc/src/libbsc/net_init.c
+++ b/openbsc/src/libbsc/net_init.c
@@ -83,6 +83,7 @@
 	/* init statistics */
 	net->bsc_ctrs = rate_ctr_group_alloc(net, &bsc_ctrg_desc, 0);
 	net->bsc_ctrs = rate_ctr_group_alloc(net, &msc_ctrg_desc, 0);
+	net->active_calls = osmo_counter_alloc("msc.active_calls");
 
 	net->mncc_recv = mncc_recv;
 	net->ext_min = GSM_MIN_EXTEN;
diff --git a/openbsc/src/libmsc/gsm_04_08.c b/openbsc/src/libmsc/gsm_04_08.c
index c30fbb0..a1d9cf3 100644
--- a/openbsc/src/libmsc/gsm_04_08.c
+++ b/openbsc/src/libmsc/gsm_04_08.c
@@ -1306,6 +1306,39 @@
 	return gsm48_conn_sendmsg(msg, conn, NULL);
 }
 
+/* FIXME: this count_statistics is a state machine behaviour. we should convert
+ * the complete call control into a state machine. Afterwards we can move this
+ * code into state transitions.
+ */
+static void count_statistics(struct gsm_trans *trans, int new_state)
+{
+	int old_state = trans->cc.state;
+	struct rate_ctr_group *msc = trans->net->msc_ctrs;
+
+	if (old_state == new_state)
+		return;
+
+	/* state incoming */
+	switch (new_state) {
+	case GSM_CSTATE_ACTIVE:
+		osmo_counter_inc(trans->net->active_calls);
+		rate_ctr_inc(&msc->ctr[MSC_CTR_CALL_ACTIVE]);
+		break;
+	}
+
+	/* state outgoing */
+	switch (old_state) {
+	case GSM_CSTATE_ACTIVE:
+		osmo_counter_dec(trans->net->active_calls);
+		if (new_state == GSM_CSTATE_DISCONNECT_REQ ||
+				new_state == GSM_CSTATE_DISCONNECT_IND)
+			rate_ctr_inc(&msc->ctr[MSC_CTR_CALL_COMPLETE]);
+		else
+			rate_ctr_inc(&msc->ctr[MSC_CTR_CALL_INCOMPLETE]);
+		break;
+	}
+}
+
 /* Call Control */
 
 /* The entire call control code is written in accordance with Figure 7.10c
@@ -1322,6 +1355,7 @@
 		gsm48_cc_state_name(trans->cc.state),
 		gsm48_cc_state_name(state));
 
+	count_statistics(trans, state);
 	trans->cc.state = state;
 }
 

-- 
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I49b93af2e6a0ba16c2fb00b7b83974e8a6a16df3
Gerrit-PatchSet: 1
Gerrit-Project: openbsc
Gerrit-Branch: master
Gerrit-Owner: lynxis lazus <lynxis at fe80.eu>