From d48229f50f9253026267083f9b31513754d03365 Mon Sep 17 00:00:00 2001
From: Alexey Kondratov <kondratov.aleksey@gmail.com>
Date: Mon, 26 Aug 2024 14:34:18 +0200
Subject: [PATCH] feat(compute): Introduce new compute_subscriptions_count
 metric (#8796)

## Problem

We need some metric to sneak peek into how many people use inbound
logical replication (Neon is a subscriber).

## Summary of changes

This commit adds a new metric `compute_subscriptions_count`, which is
number of subscriptions grouped by enabled/disabled state.

Resolves: neondatabase/cloud#16146
---
 vm-image-spec.yaml | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/vm-image-spec.yaml b/vm-image-spec.yaml
index 622004b931..0bacb63509 100644
--- a/vm-image-spec.yaml
+++ b/vm-image-spec.yaml
@@ -356,6 +356,17 @@ files:
           from pg_replication_slots
           where slot_type = 'logical';
 
+      - metric_name: compute_subscriptions_count
+        type: gauge
+        help: 'Number of logical replication subscriptions grouped by enabled/disabled'
+        key_labels:
+          - enabled
+        values: [subscriptions_count]
+        query: |
+          select subenabled::text as enabled, count(*) as subscriptions_count
+          from pg_subscription
+          group by subenabled;
+
       - metric_name: retained_wal
         type: gauge
         help: 'Retained WAL in inactive replication slots'