From 420408b1dd902dd924491ff38f606dfc0e6b7951 Mon Sep 17 00:00:00 2001
From: Samuel Lucidi <slucidi@redhat.com>
Date: Thu, 1 Jun 2023 11:33:06 -0400
Subject: [PATCH] :sparkles: Expose Hub metrics (#240)

This exposes the Hub's prometheus metrics via an additional port on the
existing Hub service. This is necessary to properly implement
https://issues.redhat.com/projects/MTA/issues/MTA-402.

Related to https://github.com/konveyor/tackle2-hub/pull/335

Signed-off-by: Sam Lucidi <slucidi@redhat.com>
---
 roles/tackle/defaults/main.yml               | 2 ++
 roles/tackle/templates/deployment-hub.yml.j2 | 4 ++++
 roles/tackle/templates/service-hub.yml.j2    | 4 ++++
 3 files changed, 10 insertions(+)

diff --git a/roles/tackle/defaults/main.yml b/roles/tackle/defaults/main.yml
index 76613c4..e80245f 100644
--- a/roles/tackle/defaults/main.yml
+++ b/roles/tackle/defaults/main.yml
@@ -48,6 +48,8 @@ hub_port: "{{ '8443' if hub_tls_enabled | bool else '8080' }}"
 hub_proto: "{{ 'https' if hub_tls_enabled | bool else 'http' }}"
 hub_url: "{{ hub_proto }}://{{ hub_service_name }}.{{ app_namespace }}.svc:{{ hub_port }}"
 hub_log_level: 3
+hub_metrics_enabled: true
+hub_metrics_port: "2112"
 
 pathfinder_database_image_fqin: "{{ lookup('env', 'RELATED_IMAGE_PATHFINDER_DATABASE') }}"
 pathfinder_database_name: "pathfinder"
diff --git a/roles/tackle/templates/deployment-hub.yml.j2 b/roles/tackle/templates/deployment-hub.yml.j2
index 49ca6d6..1806a7c 100644
--- a/roles/tackle/templates/deployment-hub.yml.j2
+++ b/roles/tackle/templates/deployment-hub.yml.j2
@@ -97,6 +97,10 @@ spec:
                 secretKeyRef:
                   name: "{{ hub_secret_name }}"
                   key: addon_token
+            - name: METRICS_ENABLED
+              value: "{{ hub_metrics_enabled }}"
+            - name: METRICS_PORT
+              value: "{{ hub_metrics_port }}"
 {% if feature_auth_required|bool and feature_auth_type == "keycloak" %}
             - name: AUTH_REQUIRED
               value: "true"
diff --git a/roles/tackle/templates/service-hub.yml.j2 b/roles/tackle/templates/service-hub.yml.j2
index 18d5163..bd52b90 100644
--- a/roles/tackle/templates/service-hub.yml.j2
+++ b/roles/tackle/templates/service-hub.yml.j2
@@ -18,6 +18,10 @@ spec:
       port: {{ hub_port }}
       targetPort: {{ hub_port }}
       protocol: TCP
+    - name: metrics
+      port: {{ hub_metrics_port }}
+      targetPort: {{ hub_metrics_port }}
+      protocol: TCP
   selector:
     app.kubernetes.io/name: {{ hub_service_name }}
     app.kubernetes.io/component: {{ hub_component_name }}