Updated sitemaps to react to a partial resource update

refs https://github.com/TryGhost/Toolbox/issues/503

- The Dynamic URL service no longer generates "url.added" event when only a partial resource update happened - only non-url forming properties were modified. The sitemaps service still needs to know when to update the lastmod ("Last Modified") field associated with specific URL.

ghost/core/core/frontend/services/sitemap/base-generator.js

@@ -63,6 +63,12 @@ class BaseSiteMapGenerator {
         return sitemapXml;
     }
 
+    updateURL(datum) {
+        const url = this.nodeLookup[datum.id].url[0].loc;
+        this.removeUrl(url, datum);
+        this.addUrl(url, datum);
+    }
+
     addUrl(url, datum) {
         const node = this.createUrlNodeFromDatum(url, datum);
 
@@ -100,6 +106,12 @@ class BaseSiteMapGenerator {
         }
     }
 
+    /**
+     *
+     * @param {String} url
+     * @param {Object} datum
+     * @returns
+     */
     createUrlNodeFromDatum(url, datum) {
         let node;
         let imgNode;

ghost/core/core/frontend/services/sitemap/manager.js

@@ -1,3 +1,5 @@
+const DomainEvents = require('@tryghost/domain-events');
+const {URLResourceUpdatedEvent} = require('@tryghost/dynamic-routing-events');
 const IndexMapGenerator = require('./index-generator');
 const PagesMapGenerator = require('./page-generator');
 const PostsMapGenerator = require('./post-generator');
@@ -29,6 +31,10 @@ class SiteMapManager {
             }
         });
 
+        DomainEvents.subscribe(URLResourceUpdatedEvent, (event) => {
+            this[event.data.resourceType].updateURL(event.data);
+        });
+
         events.on('url.added', (obj) => {
             this[obj.resource.config.type].addUrl(obj.url.absolute, obj.resource.data);
         });

ghost/core/package.json

@@ -73,6 +73,7 @@
     "@tryghost/database-info": "0.3.14",
     "@tryghost/debug": "0.1.21",
     "@tryghost/domain-events": "0.0.0",
+    "@tryghost/dynamic-routing-events": "0.0.0",
     "@tryghost/email-analytics-provider-mailgun": "0.0.0",
     "@tryghost/email-analytics-service": "0.0.0",
     "@tryghost/email-content-generator": "0.0.0",