From 5be0b37cb1978456c594a731a47762d3a2fc036a Mon Sep 17 00:00:00 2001
From: Tymoteusz Czech <2625371+Tymek@users.noreply.github.com>
Date: Mon, 2 Jun 2025 12:40:10 +0200
Subject: [PATCH] fix: add event listeners for release plan updates in metrics
 (#10070)

Milestone changes should be visible in metrics, in the same way as
strategy changes are.
---
 src/lib/metrics.ts | 55 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

diff --git a/src/lib/metrics.ts b/src/lib/metrics.ts
index 1cd49ae53a..42567c668d 100644
--- a/src/lib/metrics.ts
+++ b/src/lib/metrics.ts
@@ -23,6 +23,9 @@ import {
     PROJECT_ARCHIVED,
     PROJECT_REVIVED,
     PROJECT_DELETED,
+    RELEASE_PLAN_ADDED,
+    RELEASE_PLAN_REMOVED,
+    RELEASE_PLAN_MILESTONE_STARTED,
 } from './events/index.js';
 import type { IUnleashConfig } from './types/option.js';
 import type { IUnleashStores } from './types/stores.js';
@@ -1005,6 +1008,58 @@ export function registerPrometheusMetrics(
             action: 'revived',
         });
     });
+
+    eventStore.on(
+        RELEASE_PLAN_ADDED,
+        async ({ featureName, project, environment }) => {
+            const environmentType = await resolveEnvironmentType(
+                environment,
+                cachedEnvironments,
+            );
+            featureFlagUpdateTotal.increment({
+                toggle: featureName,
+                project,
+                environment,
+                environmentType,
+                action: 'updated',
+            });
+        },
+    );
+
+    eventStore.on(
+        RELEASE_PLAN_REMOVED,
+        async ({ featureName, project, environment }) => {
+            const environmentType = await resolveEnvironmentType(
+                environment,
+                cachedEnvironments,
+            );
+            featureFlagUpdateTotal.increment({
+                toggle: featureName,
+                project,
+                environment,
+                environmentType,
+                action: 'updated',
+            });
+        },
+    );
+
+    eventStore.on(
+        RELEASE_PLAN_MILESTONE_STARTED,
+        async ({ featureName, project, environment }) => {
+            const environmentType = await resolveEnvironmentType(
+                environment,
+                cachedEnvironments,
+            );
+            featureFlagUpdateTotal.increment({
+                toggle: featureName,
+                project,
+                environment,
+                environmentType,
+                action: 'updated',
+            });
+        },
+    );
+
     eventStore.on(PROJECT_CREATED, () => {
         projectActionsCounter.increment({ action: PROJECT_CREATED });
     });