[8.10] [Cloud Security] [Alerts] Fix alerts telemetry collector (#164757

) (#164913)

# Backport

This will backport the following commits from `main` to `8.10`:
- [[Cloud Security] [Alerts] Fix alerts telemetry collector
(#164757)](#164757)

<!--- Backport version: 8.9.7 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

<!--BACKPORT [{"author":{"name":"Paulo
Henrique","email":"[email protected]"},"sourceCommit":{"committedDate":"2023-08-26T04:25:52Z","message":"[Cloud
Security] [Alerts] Fix alerts telemetry collector
(#164757)","sha":"d18ef2f9797787b481345694b512dd56f40c0b48","branchLabelMapping":{"^v8.11.0$":"main","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["bug","release_note:skip","Team:Cloud
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Security] [Alerts] Fix alerts telemetry collector
(#164757)","sha":"d18ef2f9797787b481345694b512dd56f40c0b48"}},"sourceBranch":"main","suggestedTargetBranches":["8.10"],"targetPullRequestStates":[{"branch":"8.10","label":"v8.10.0","labelRegex":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"},{"branch":"main","label":"v8.11.0","labelRegex":"^v8.11.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/164757","number":164757,"mergeCommit":{"message":"[Cloud
Security] [Alerts] Fix alerts telemetry collector
(#164757)","sha":"d18ef2f9797787b481345694b512dd56f40c0b48"}}]}]
BACKPORT-->

Co-authored-by: Paulo Henrique <[email protected]>

x-pack/plugins/cloud_security_posture/server/lib/telemetry/collectors/alert_stats_collector.ts

@@ -9,53 +9,28 @@ import type { ElasticsearchClient } from '@kbn/core-elasticsearch-server';
 import type { CloudSecurityAlertsStats } from './types';
 import { DETECTION_ENGINE_ALERTS_INDEX_DEFAULT } from '../../../../common/constants';
 
-interface AlertsStats {
-  aggregations: {
-    cspm: {
-      rules_count: {
-        value: number;
-      };
-      alerts_open: {
-        doc_count: number;
-      };
-      alerts_acknowledged: {
-        doc_count: number;
-      };
-      alerts_closed: {
-        doc_count: number;
-      };
-    };
-    kspm: {
-      rules_count: {
-        value: number;
-      };
-      alerts_open: {
-        doc_count: number;
-      };
-      alerts_acknowledged: {
-        doc_count: number;
-      };
-      alerts_closed: {
-        doc_count: number;
-      };
-    };
-    vuln_mgmt: {
-      rules_count: {
-        value: number;
-      };
-      alerts_open: {
-        doc_count: number;
-      };
-      alerts_acknowledged: {
-        doc_count: number;
-      };
-      alerts_closed: {
-        doc_count: number;
-      };
-    };
+interface AlertStat {
+  doc_count: number;
+  rules_count: {
+    value: number;
+  };
+  alerts_open: {
+    doc_count: number;
+  };
+  alerts_acknowledged: {
+    doc_count: number;
+  };
+  alerts_closed: {
+    doc_count: number;
   };
 }
 
+interface AlertsStats {
+  cspm: AlertStat;
+  kspm: AlertStat;
+  vuln_mgmt: AlertStat;
+}
+
 const getAlertsStatsQuery = (index: string) => ({
   size: 0,
   query: {
@@ -187,20 +162,25 @@ export const getAlertsStats = async (
 
     if (isIndexExists) {
       const alertsStats = await esClient.search<unknown, AlertsStats>(getAlertsStatsQuery(index));
-
       const postureTypes = ['cspm', 'kspm', 'vuln_mgmt'] as const;
 
-      return postureTypes.map((postureType) => ({
-        posture_type: postureType,
-        rules_count: alertsStats.aggregations?.aggregations[postureType].rules_count.value,
-        alerts_count: alertsStats.aggregations?.aggregations[postureType].alerts_open.doc_count,
-        alerts_open_count:
-          alertsStats.aggregations?.aggregations[postureType].alerts_open.doc_count,
-        alerts_acknowledged_count:
-          alertsStats.aggregations?.aggregations[postureType].alerts_acknowledged.doc_count,
-        alerts_closed_count:
-          alertsStats.aggregations?.aggregations[postureType].alerts_closed.doc_count,
-      })) as CloudSecurityAlertsStats[];
+      return postureTypes
+        .filter(
+          (postureType) =>
+            alertsStats?.aggregations?.[postureType]?.doc_count &&
+            alertsStats.aggregations[postureType].doc_count > 0
+        )
+        .map((postureType): CloudSecurityAlertsStats => {
+          const postureTypeData = alertsStats!.aggregations![postureType];
+          return {
+            posture_type: postureType,
+            rules_count: postureTypeData.rules_count?.value,
+            alerts_count: postureTypeData.doc_count,
+            alerts_open_count: postureTypeData.alerts_open?.doc_count,
+            alerts_acknowledged_count: postureTypeData.alerts_acknowledged?.doc_count,
+            alerts_closed_count: postureTypeData.alerts_closed?.doc_count,
+          };
+        });
     }
     return [];
   } catch (e) {