MINOR: contrib/prometheus-exporter: Report DRAIN/MAINT/NOLB status for servers
Now, following status are reported for servers:0=DOWN, 1=UP, 2=MAINT, 3=DRAIN,
4=NOLB.
It is linked to the github issue #255. Thanks to Mickaël Martin. If needed, this
patch may be backported to 2.0.
diff --git a/contrib/prometheus-exporter/service-prometheus.c b/contrib/prometheus-exporter/service-prometheus.c
index 9b9ef2e..b1bb174 100644
--- a/contrib/prometheus-exporter/service-prometheus.c
+++ b/contrib/prometheus-exporter/service-prometheus.c
@@ -659,7 +659,7 @@
[ST_F_ERESP] = IST("Total number of response errors."),
[ST_F_WRETR] = IST("Total number of retry warnings."),
[ST_F_WREDIS] = IST("Total number of redispatch warnings."),
- [ST_F_STATUS] = IST("Current status of the service (frontend: 0=STOP, 1=UP, 2=FULL - backend/server: 0=DOWN, 1=UP)."),
+ [ST_F_STATUS] = IST("Current status of the service (frontend: 0=STOP, 1=UP, 2=FULL - backend: 0=DOWN, 1=UP - server: 0=DOWN, 1=UP, 2=MAINT, 3=DRAIN, 4=NOLB)."),
[ST_F_WEIGHT] = IST("Service weight."),
[ST_F_ACT] = IST("Current number of active servers."),
[ST_F_BCK] = IST("Current number of backup servers."),
@@ -1044,25 +1044,21 @@
[ST_F_CACHE_HITS] = IST("counter"),
};
-/* Return the server status: 1=UP and 0=DOWN. */
+/* Return the server status: 0=DOWN, 1=UP, 2=MAINT, 3=DRAIN, 4=NOLB. */
static int promex_srv_status(struct server *sv)
{
- struct server *via, *ref;
int state = 0;
- /* we have "via" which is the tracked server as described in the configuration,
- * and "ref" which is the checked server and the end of the chain.
- */
- via = sv->track ? sv->track : sv;
- ref = via;
- while (ref->track)
- ref = ref->track;
-
if (sv->cur_state == SRV_ST_RUNNING || sv->cur_state == SRV_ST_STARTING) {
state = 1;
if (sv->cur_admin & SRV_ADMF_DRAIN)
- state = 0;
+ state = 3;
}
+ else if (sv->cur_state == SRV_ST_STOPPING)
+ state = 4;
+
+ if (sv->cur_admin & SRV_ADMF_MAINT)
+ state = 2;
return state;
}