Send metrics for map instantiations (named, anonymous and static) with the new format.

lib/api/map/preview-template-controller.js

@@ -12,6 +12,7 @@ const lastModifiedHeader = require('../middlewares/last-modified-header');
 const checkStaticImageFormat = require('../middlewares/check-static-image-format');
 const rateLimit = require('../middlewares/rate-limit');
 const { RATE_LIMIT_ENDPOINTS_GROUPS } = rateLimit;
+const metrics = require('../middlewares/pubsub-metrics');
 
 const DEFAULT_ZOOM_CENTER = {
     zoom: 1,
@@ -27,6 +28,7 @@ function numMapper (n) {
 
 module.exports = class PreviewTemplateController {
     constructor (
+        config,
         namedMapProviderCache,
         previewBackend,
         surrogateKeysCache,
@@ -34,8 +36,10 @@ module.exports = class PreviewTemplateController {
         metadataBackend,
         pgConnection,
         authBackend,
-        userLimitsBackend
+        userLimitsBackend,
+        metricsBackend
     ) {
+        this.config = config;
         this.namedMapProviderCache = namedMapProviderCache;
         this.previewBackend = previewBackend;
         this.surrogateKeysCache = surrogateKeysCache;
@@ -44,6 +48,7 @@ module.exports = class PreviewTemplateController {
         this.pgConnection = pgConnection;
         this.authBackend = authBackend;
         this.userLimitsBackend = userLimitsBackend;
+        this.metricsBackend = metricsBackend;
     }
 
     route (mapRouter) {
@@ -51,7 +56,23 @@ module.exports = class PreviewTemplateController {
     }
 
     middlewares () {
+        const metricsTags = {
+            event: 'map_view',
+            attributes: { map_type: 'static' },
+            from: {
+                req: {
+                    query: { client: 'client' }
+                }
+            }
+        };
+
         return [
+            metrics({
+                enabled: this.config.pubSubMetrics.enabled,
+                metricsBackend: this.metricsBackend,
+                logger: global.logger,
+                tags: metricsTags
+            }),
             credentials(),
             authorize(this.authBackend),
             dbConnSetup(this.pgConnection),