[Cases] Add total observables to cases SO mapping (#241388)

## Summary

This PR adds `total_observables` to SO mapping so that we can do
aggregation on how many cases have reached maximum number of observables
allowed.


### Checklist

- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios
- [x] The PR description includes the appropriate Release Notes section,
and the correct `release_note:*` label is applied per the
[guidelines](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)
- [x] Review the [backport
guidelines](https://docs.google.com/document/d/1VyN5k91e5OVumlc0Gb9RPa3h1ewuPE705nRtioPiTvY/edit?usp=sharing)
and apply applicable `backport:*` labels.

---------

Co-authored-by: kibanamachine <[email protected]>

Author: christineweng

packages/kbn-check-saved-objects-cli/current_fields.json

@@ -197,6 +197,7 @@
     "total_alerts",
     "total_comments",
     "total_events",
+    "total_observables",
     "updated_at",
     "updated_by",
     "updated_by.email",

packages/kbn-check-saved-objects-cli/current_mappings.json

@@ -651,6 +651,9 @@
         },
         "type": "nested"
       },
+      "total_observables": {
+        "type": "integer"
+      },
       "owner": {
         "type": "keyword"
       },

src/core/server/integration_tests/ci_checks/saved_objects/check_registered_types.test.ts

@@ -79,7 +79,7 @@ describe('checking migration metadata changes on all registered SO types', () =>
         "canvas-element": "288fd8d216eb49cbeb5e8f7491f207ef074b80dd",
         "canvas-workpad": "5cd605383a100a27941cca6cbf2d954aa96a16e2",
         "canvas-workpad-template": "f9a6ffab76ddfcd8fa3823002aa576c8f1d0e686",
-        "cases": "1a836084eecbf7dfd56bc2ae79073727866bffb1",
+        "cases": "d5ffb902405102c6f18b33ee6d96a2ad82358e59",
         "cases-comments": "235311d14fbba84faf8ce1f32c31ddb3a435bacb",
         "cases-configure": "66d4c64d83b464f5166005b8ffa03b721fcaaf8b",
         "cases-connector-mappings": "877bb4d52e9821e330622bd75fba799490ec6952",
@@ -407,8 +407,9 @@ describe('checking migration metadata changes on all registered SO types', () =>
         "canvas-workpad-template|warning: The SO type owner should ensure these transform functions DO NOT mutate after they are defined.",
         "================================================================================================================================",
         "cases|global: 58923536ede82aed6c22799b52c4f51f4bf66aba",
-        "cases|mappings: 2db3f94cac5a7513ad58ec625e9994dba507b39d",
+        "cases|mappings: 8b47dda512f5549f92ca1c6b75f0d8ce5b92a008",
         "cases|schemas: da39a3ee5e6b4b0d3255bfef95601890afd80709",
+        "cases|10.8.0: 11a4a6080410fed228ddc0cf518b1b72377d9bef",
         "cases|10.7.0: aa0926b29680b10628ef05c77cf67564b7bff573",
         "cases|10.6.0: 5837259ab25e4059141fce980a861f0ba977d8a2",
         "cases|10.5.0: 3c7812d675d4223c11969bb1b49a4cc626c1bd1f",
@@ -1266,7 +1267,7 @@ describe('checking migration metadata changes on all registered SO types', () =>
         "canvas-element": "10.0.0",
         "canvas-workpad": "10.0.0",
         "canvas-workpad-template": "10.0.0",
-        "cases": "10.7.0",
+        "cases": "10.8.0",
         "cases-comments": "10.1.0",
         "cases-configure": "10.0.0",
         "cases-connector-mappings": "10.0.0",
@@ -1413,7 +1414,7 @@ describe('checking migration metadata changes on all registered SO types', () =>
         "canvas-element": "8.9.0",
         "canvas-workpad": "8.9.0",
         "canvas-workpad-template": "8.9.0",
-        "cases": "10.7.0",
+        "cases": "10.8.0",
         "cases-comments": "10.1.0",
         "cases-configure": "7.15.0",
         "cases-connector-mappings": "7.14.0",

x-pack/platform/plugins/shared/cases/common/types/api/case/v1.test.ts

@@ -136,6 +136,7 @@ const basicCase: Case = {
       description: null,
     },
   ],
+  total_observables: 1,
   incremental_id: 123,
 };
 

x-pack/platform/plugins/shared/cases/common/types/domain/case/v1.test.ts

@@ -94,6 +94,7 @@ const basicCase = {
     },
   ],
   observables: [],
+  total_observables: 0,
   incremental_id: undefined,
   in_progress_at: undefined,
   time_to_acknowledge: undefined,
@@ -219,6 +220,7 @@ describe('CaseAttributesRt', () => {
       },
     ],
     observables: [],
+    total_observables: 0,
     in_progress_at: undefined,
     time_to_acknowledge: undefined,
     time_to_investigate: undefined,

x-pack/platform/plugins/shared/cases/common/types/domain/case/v1.ts

@@ -133,6 +133,7 @@ export const CaseAttributesRt = rt.intersection([
     external_service: rt.union([ExternalServiceRt, rt.null]),
     updated_at: rt.union([rt.string, rt.null]),
     updated_by: rt.union([UserRt, rt.null]),
+    total_observables: rt.union([rt.number, rt.null]),
   }),
   rt.exact(
     rt.partial({

x-pack/platform/plugins/shared/cases/public/containers/mock.ts

@@ -274,6 +274,7 @@ export const basicCase: CaseUI = {
   category: null,
   customFields: [],
   observables: [],
+  totalObservables: 0,
   incrementalId: undefined,
 };
 
@@ -402,6 +403,7 @@ export const mockCase: CaseUI = {
   category: null,
   customFields: [],
   observables: [],
+  totalObservables: 0,
   incrementalId: undefined,
 };
 
@@ -596,6 +598,7 @@ export const basicCaseSnake: Case = {
   owner: SECURITY_SOLUTION_OWNER,
   customFields: [],
   incremental_id: undefined,
+  total_observables: 0,
 } as Case;
 
 export const caseWithAlertsSnake = {

x-pack/platform/plugins/shared/cases/server/client/cases/bulk_create.test.ts

@@ -137,6 +137,7 @@ describe('bulkCreate', () => {
               "totalAlerts": 0,
               "totalComment": 0,
               "totalEvents": 0,
+              "total_observables": 0,
               "updated_at": "2019-11-25T21:54:48.952Z",
               "updated_by": Object {
                 "email": "[email protected]",
@@ -184,6 +185,7 @@ describe('bulkCreate', () => {
               "totalAlerts": 0,
               "totalComment": 0,
               "totalEvents": 0,
+              "total_observables": 0,
               "updated_at": "2019-11-25T21:54:48.952Z",
               "updated_by": Object {
                 "email": "[email protected]",
@@ -262,6 +264,7 @@ describe('bulkCreate', () => {
               "status": "open",
               "tags": Array [],
               "title": "My Case",
+              "total_observables": 0,
               "updated_at": null,
               "updated_by": null,
             },
@@ -303,6 +306,7 @@ describe('bulkCreate', () => {
               "status": "open",
               "tags": Array [],
               "title": "My Case",
+              "total_observables": 0,
               "updated_at": null,
               "updated_by": null,
             },

x-pack/platform/plugins/shared/cases/server/client/cases/bulk_update.test.ts

@@ -926,6 +926,7 @@ describe('update', () => {
             "totalAlerts": 2,
             "totalComment": 1,
             "totalEvents": 0,
+            "total_observables": 0,
             "updated_at": "2019-11-25T21:54:48.952Z",
             "updated_by": Object {
               "email": "[email protected]",
@@ -973,6 +974,7 @@ describe('update', () => {
             "totalAlerts": 4,
             "totalComment": 3,
             "totalEvents": 0,
+            "total_observables": 0,
             "updated_at": "2019-11-25T22:32:00.900Z",
             "updated_by": Object {
               "email": "[email protected]",

x-pack/platform/plugins/shared/cases/server/client/cases/observables.ts

@@ -110,6 +110,7 @@ export const addObservable = async (
       originalCase: retrievedCase,
       updatedAttributes: {
         observables: updatedObservables,
+        total_observables: updatedObservables.length,
       },
     });
 
@@ -199,6 +200,7 @@ export const updateObservable = async (
       originalCase: retrievedCase,
       updatedAttributes: {
         observables: updatedObservables,
+        total_observables: updatedObservables.length,
       },
     });
 
@@ -267,7 +269,10 @@ export const deleteObservable = async (
     await caseService.patchCase({
       caseId: retrievedCase.id,
       originalCase: retrievedCase,
-      updatedAttributes: { observables: updatedObservables },
+      updatedAttributes: {
+        observables: updatedObservables,
+        total_observables: updatedObservables.length,
+      },
     });
     await userActionService.creator.createUserAction({
       userAction: {
@@ -340,6 +345,7 @@ export const bulkAddObservables = async (
       originalCase: retrievedCase,
       updatedAttributes: {
         observables: finalObservables,
+        total_observables: finalObservables.length,
       },
     });