[Graph] Make Graph saved object share-capable (#111404)

* [graph] Make Graph saved object share-capable

Step 4 of https://www.elastic.co/guide/en/kibana/master/sharing-saved-objects.html#sharing-saved-objects-faq-changing-object-ids

* bump migration version to fix the test

* test

* Revert "bump migration version to fix the test"

This reverts commit 04d2f49.

* Revert "test"

This reverts commit 7b0a74d.

* Fix Core migration integration tests

The existing tests incorrectly asserted an object's `migrationVersion`
solely based on the registered type's `migration` field; in reality, the
`convertToMultiNamespaceTypeVersion` field is also used when determining
an object's `migrationVersion`. This commit simply updates the test to
reflect that.

Co-authored-by: Joe Portner <5295965+jportner@users.noreply.github.com>
Co-authored-by: Kibana Machine <42973632+kibanamachine@users.noreply.github.com>

src/core/server/saved_objects/migrationsv2/integration_tests/migration_from_v1.test.ts

@@ -118,18 +118,23 @@ describe('migration v2', () => {
       .getTypeRegistry()
       .getAllTypes()
       .reduce((versionMap, type) => {
-        if (type.migrations) {
-          const migrationsMap =
-            typeof type.migrations === 'function' ? type.migrations() : type.migrations;
-          const highestVersion = Object.keys(migrationsMap).sort(Semver.compare).reverse()[0];
+        const { name, migrations, convertToMultiNamespaceTypeVersion } = type;
+        if (migrations || convertToMultiNamespaceTypeVersion) {
+          const migrationsMap = typeof migrations === 'function' ? migrations() : migrations;
+          const migrationsKeys = migrationsMap ? Object.keys(migrationsMap) : [];
+          if (convertToMultiNamespaceTypeVersion) {
+            // Setting this option registers a conversion migration that is reflected in the object's `migrationVersions` field
+            migrationsKeys.push(convertToMultiNamespaceTypeVersion);
+          }
+          const highestVersion = migrationsKeys.sort(Semver.compare).reverse()[0];
           return {
             ...versionMap,
-            [type.name]: highestVersion,
+            [name]: highestVersion,
           };
         } else {
           return {
             ...versionMap,
-            [type.name]: undefined,
+            [name]: undefined,
           };
         }
       }, {} as Record<string, string | undefined>);

x-pack/plugins/graph/server/saved_objects/graph_workspace.ts

@@ -10,7 +10,8 @@ import { graphMigrations } from './migrations';
 
 export const graphWorkspace: SavedObjectsType = {
   name: 'graph-workspace',
-  namespaceType: 'single',
+  namespaceType: 'multiple-isolated',
+  convertToMultiNamespaceTypeVersion: '8.0.0',
   hidden: false,
   management: {
     icon: 'graphApp',