chore: new grafana datasouce (#24904)

Fix A-1410

Author: alexghr

spartan/metrics/values/prod.yaml

@@ -166,3 +166,16 @@ grafana:
         - name: Tempo
           type: tempo
           url: http://metrics-tempo.metrics:3100
+        - name: propose-watcher
+          uid: propose-watcher-pg
+          type: postgres
+          access: proxy
+          url: $PROPOSE_WATCHER_PG_HOST
+          user: $PROPOSE_WATCHER_PG_USER
+          jsonData:
+            database: $PROPOSE_WATCHER_PG_DATABASE
+            sslmode: disable
+            postgresVersion: 1600
+            maxOpenConns: 4
+          secureJsonData:
+            password: $PROPOSE_WATCHER_PG_PASSWORD

spartan/terraform/deploy-metrics/main.tf

@@ -163,6 +163,10 @@ resource "helm_release" "aztec-gke-cluster" {
           {
             name     = "grafana-webhooks"
             optional = false
+          },
+          {
+            name     = "grafana-propose-watcher-datasource"
+            optional = false
           }
         ]
 
@@ -205,6 +209,26 @@ resource "helm_release" "aztec-gke-cluster" {
                 { secretKey = "SLACK_WEBHOOK_MAINNET_URL", remoteRef = { key = var.SLACK_WEBHOOK_MAINNET_SECRET_NAME } },
               ]
             }
+          },
+          {
+            apiVersion = "external-secrets.io/v1"
+            kind       = "ExternalSecret"
+            metadata = {
+              name = "grafana-propose-watcher-datasource"
+            }
+            spec = {
+              refreshInterval = "1m"
+              secretStoreRef = {
+                name = "gcp-secret-store"
+                kind = "ClusterSecretStore"
+              }
+              data = [
+                { secretKey = "PROPOSE_WATCHER_PG_HOST", remoteRef = { key = var.PROPOSE_WATCHER_GRAFANA_DATASOURCE_SECRET_NAME, property = "host" } },
+                { secretKey = "PROPOSE_WATCHER_PG_DATABASE", remoteRef = { key = var.PROPOSE_WATCHER_GRAFANA_DATASOURCE_SECRET_NAME, property = "database" } },
+                { secretKey = "PROPOSE_WATCHER_PG_USER", remoteRef = { key = var.PROPOSE_WATCHER_GRAFANA_DATASOURCE_SECRET_NAME, property = "user" } },
+                { secretKey = "PROPOSE_WATCHER_PG_PASSWORD", remoteRef = { key = var.PROPOSE_WATCHER_GRAFANA_DATASOURCE_SECRET_NAME, property = "password" } },
+              ]
+            }
           }
         ]
       }

spartan/terraform/deploy-metrics/variables.tf

@@ -22,6 +22,12 @@ variable "GRAFANA_PASSWORD_SECRET_NAME" {
   default     = "grafana-dashboard-password"
 }
 
+variable "PROPOSE_WATCHER_GRAFANA_DATASOURCE_SECRET_NAME" {
+  description = "GCP Secret Manager JSON secret containing the propose-watcher Grafana datasource connection values"
+  type        = string
+  default     = "propose-watcher-grafana-datasource"
+}
+
 variable "SLACK_WEBHOOK_SECRET_NAME" {
   description = "Webhook to use to send to notifications"
   type        = string