Auto increase fields limit of the alert indices

x-pack/platform/plugins/shared/alerting/common/alert_schema/field_maps/component_template_from_field_map.ts

@@ -5,7 +5,10 @@
  * 2.0.
  */
 
-import type { ClusterPutComponentTemplateRequest } from '@elastic/elasticsearch/lib/api/types';
+import type {
+  ClusterPutComponentTemplateRequest,
+  MappingDynamicTemplate,
+} from '@elastic/elasticsearch/lib/api/types';
 import { type FieldMap } from '@kbn/alerts-as-data-utils';
 import { mappingFromFieldMap } from './mapping_from_field_map';
 
@@ -14,12 +17,14 @@ export interface GetComponentTemplateFromFieldMapOpts {
   fieldMap: FieldMap;
   includeSettings?: boolean;
   dynamic?: 'strict' | false;
+  dynamicTemplates?: Array<Record<string, MappingDynamicTemplate>>;
 }
 export const getComponentTemplateFromFieldMap = ({
   name,
   fieldMap,
   dynamic,
   includeSettings,
+  dynamicTemplates,
 }: GetComponentTemplateFromFieldMapOpts): ClusterPutComponentTemplateRequest => {
   return {
     name,
@@ -37,7 +42,10 @@ export const getComponentTemplateFromFieldMap = ({
           : {}),
       },
 
-      mappings: mappingFromFieldMap(fieldMap, dynamic ?? 'strict'),
+      mappings: {
+        ...mappingFromFieldMap(fieldMap, dynamic ?? 'strict'),
+        ...(dynamicTemplates ? { dynamic_templates: dynamicTemplates } : {}),
+      },
     },
   };
 };

x-pack/platform/plugins/shared/alerting/server/alerts_service/alerts_service.test.ts

@@ -174,6 +174,7 @@ const getIndexTemplatePutBody = (opts?: GetIndexTemplatePutBodyOpts) => {
             }),
         'index.mapping.ignore_malformed': true,
         'index.mapping.total_fields.limit': 2500,
+        'index.mapping.total_fields.ignore_dynamic_beyond_limit': true,
       },
       mappings: {
         dynamic: false,
@@ -479,6 +480,7 @@ describe('Alerts Service', () => {
               settings: {
                 ...existingIndexTemplate.index_template.template?.settings,
                 'index.mapping.total_fields.limit': 2500,
+                'index.mapping.total_fields.ignore_dynamic_beyond_limit': true,
               },
             },
           });
@@ -899,6 +901,7 @@ describe('Alerts Service', () => {
                       },
                     }),
                 'index.mapping.ignore_malformed': true,
+                'index.mapping.total_fields.ignore_dynamic_beyond_limit': true,
                 'index.mapping.total_fields.limit': 2500,
               },
               mappings: {