[PATCH 1/1] MINOR: promex: Introduce 'NOROOM' status for srv_state metric

[Cedric Paillet]

This adds a new 'noroom' status to the Prometheus metric 'srv_state'. It helps 
identify servers that have exceeded their maxconn limit and cannot accept new 
connections.
---
 addons/promex/service-prometheus.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/addons/promex/service-prometheus.c 
b/addons/promex/service-prometheus.c
index 7b61683dd..4551009d5 100644
--- a/addons/promex/service-prometheus.c
+++ b/addons/promex/service-prometheus.c
@@ -380,6 +380,7 @@ enum promex_srv_state {
        PROMEX_SRV_STATE_UP,
        PROMEX_SRV_STATE_MAINT,
        PROMEX_SRV_STATE_DRAIN,
+       PROMEX_SRV_STATE_NOROOM,
        PROMEX_SRV_STATE_NOLB,
 
        PROMEX_SRV_STATE_COUNT /* must be last */
@@ -390,10 +391,13 @@ const struct ist promex_srv_st[PROMEX_SRV_STATE_COUNT] = {
        [PROMEX_SRV_STATE_UP]    = IST("UP"),
        [PROMEX_SRV_STATE_MAINT] = IST("MAINT"),
        [PROMEX_SRV_STATE_DRAIN] = IST("DRAIN"),
+       [PROMEX_SRV_STATE_NOROOM] = IST("NOROOM"),
        [PROMEX_SRV_STATE_NOLB]  = IST("NOLB"),
 };
 
 /* Return the server status. */
+
+
 enum promex_srv_state promex_srv_status(struct server *sv)
 {
        int state = PROMEX_SRV_STATE_DOWN;
@@ -402,6 +406,9 @@ enum promex_srv_state promex_srv_status(struct server *sv)
                state = PROMEX_SRV_STATE_UP;
                if (sv->cur_admin & SRV_ADMF_DRAIN)
                        state = PROMEX_SRV_STATE_DRAIN;
+               if (!server_has_room(sv))
+                       state = PROMEX_SRV_STATE_NOROOM;
+
        }
        else if (sv->cur_state == SRV_ST_STOPPING)
                state = PROMEX_SRV_STATE_NOLB;
-- 
2.25.1