feat: Add release version in k8s overview (#209)

* feat: added release version field in k8s query

* feat: added test for release version field

* test: removed unnecessary annotation

---------

Co-authored-by: tobias.blasge <tobias.blasge@dynatrace.com>

Author: blasget

README.md

@@ -225,6 +225,11 @@ here:
 [`dynatrace.kubernetes-deployments`](plugins/dql-backend/src/service/queries.ts).
 You can change this query for all cards or override it using a custom query.
 
+_Convention:_ To display the pod's version in Backstage, annotate it using the following key-value pair:
+```yaml
+app.kubernetes.io/version: <version>
+```
+
 ### Site Reliability Guardian Validations
 
 Using the `EntityDqlQueryCard` with the queryId `dynatrace.srg-validations`, you

plugins/dql-backend/src/service/queries.test.ts

@@ -95,6 +95,20 @@ describe('queries', () => {
       // assert
       expect(query).toContain('| filter workload.labels[`label`] == "value"');
     });
+
+     it('should return the query with the version column included', () => {
+      // act
+      const query = dynatraceQueries[DynatraceQueryKeys.KUBERNETES_DEPLOYMENTS](
+        getEntity({
+          'backstage.io/kubernetes-label-selector': 'label=value',
+          'backstage.io/kubernetes-namespace': 'namespace',
+        }),
+        defaultApiConfig,
+      );
+
+      // assert
+      expect(query).toContain('| fieldsAdd Version = coalesce(workload.labels[`app.kubernetes.io/version`], "")');
+    });
   });
   describe(DynatraceQueryKeys.SRG_VALIDATIONS, () => {
     it('should return the srg-query', () => {

plugins/dql-backend/src/service/queries.ts

@@ -110,8 +110,9 @@ export const dynatraceQueries: Record<
       'id',
       apiConfig,
     )}})
-    | fieldsRemove id, name, workload.labels, cluster.id, namespace.id
-    | fieldsAdd Environment = "${apiConfig.environmentName}"`;
+    | fieldsAdd Environment = "${apiConfig.environmentName}"
+    | fieldsAdd Version = coalesce(workload.labels[\`app.kubernetes.io/version\`], "")
+    | fieldsRemove id, name, workload.labels, cluster.id, namespace.id`;
   },
   [DynatraceQueryKeys.SRG_VALIDATIONS]: (entity, apiConfig) => {
     const catalogTags =