[Fleet] Don't throw concurrent installation error when encountering conflicts

x-pack/plugins/fleet/server/errors/index.ts

@@ -43,6 +43,7 @@ export class PackageInvalidArchiveError extends FleetError {}
 export class PackageRemovalError extends FleetError {}
 export class PackageESError extends FleetError {}
 export class ConcurrentInstallOperationError extends FleetError {}
+export class PackageSavedObjectConflictError extends FleetError {}
 
 export class KibanaSOReferenceError extends FleetError {}
 export class PackageAlreadyInstalledError extends FleetError {}

x-pack/plugins/fleet/server/services/epm/packages/_install_package.test.ts

@@ -14,7 +14,7 @@ import { savedObjectsClientMock, elasticsearchServiceMock } from '@kbn/core/serv
 import { loggerMock } from '@kbn/logging-mocks';
 import { DEFAULT_SPACE_ID } from '@kbn/spaces-plugin/common/constants';
 
-import { ConcurrentInstallOperationError } from '../../../errors';
+import { ConcurrentInstallOperationError, PackageSavedObjectConflictError } from '../../../errors';
 
 import type { Installation } from '../../../../common';
 
@@ -254,7 +254,6 @@ describe('_installPackage', () => {
   });
 
   describe('when package is stuck in `installing`', () => {
-    afterEach(() => {});
     const mockInstalledPackageSo: SavedObject<Installation> = {
       id: 'mocked-package',
       attributes: {
@@ -387,4 +386,56 @@ describe('_installPackage', () => {
       });
     });
   });
+
+  it('surfaces saved object conflicts error', () => {
+    appContextService.start(
+      createAppContextStartContractMock({
+        internal: {
+          disableILMPolicies: false,
+          disableProxies: false,
+          fleetServerStandalone: false,
+          onlyAllowAgentUpgradeToKnownVersions: false,
+          retrySetupOnBoot: false,
+          registry: {
+            kibanaVersionCheckEnabled: true,
+            capabilities: [],
+            excludePackages: [],
+          },
+        },
+      })
+    );
+
+    mockedInstallKibanaAssetsAndReferences.mockRejectedValueOnce(
+      new PackageSavedObjectConflictError('test')
+    );
+
+    expect(
+      _installPackage({
+        savedObjectsClient: soClient,
+        // @ts-ignore
+        savedObjectsImporter: jest.fn(),
+        esClient,
+        logger: loggerMock.create(),
+        packageInstallContext: {
+          packageInfo: {
+            title: 'title',
+            name: 'xyz',
+            version: '4.5.6',
+            description: 'test',
+            type: 'integration',
+            categories: ['cloud', 'custom'],
+            format_version: 'string',
+            release: 'experimental',
+            conditions: { kibana: { version: 'x.y.z' } },
+            owner: { github: 'elastic/fleet' },
+          } as any,
+          assetsMap: new Map(),
+          paths: [],
+        },
+        installType: 'install',
+        installSource: 'registry',
+        spaceId: DEFAULT_SPACE_ID,
+      })
+    ).rejects.toThrowError(PackageSavedObjectConflictError);
+  });
 });

x-pack/plugins/fleet/server/services/epm/packages/_install_package.ts

@@ -45,7 +45,7 @@ import { installTransforms } from '../elasticsearch/transform/install';
 import { installMlModel } from '../elasticsearch/ml_model';
 import { installIlmForDataStream } from '../elasticsearch/datastream_ilm/install';
 import { saveArchiveEntriesFromAssetsMap } from '../archive/storage';
-import { ConcurrentInstallOperationError } from '../../../errors';
+import { ConcurrentInstallOperationError, PackageSavedObjectConflictError } from '../../../errors';
 import { appContextService, packagePolicyService } from '../..';
 
 import { auditLoggingService } from '../../audit_logging';
@@ -387,10 +387,12 @@ export async function _installPackage({
     return [...installedKibanaAssetsRefs, ...esReferences];
   } catch (err) {
     if (SavedObjectsErrorHelpers.isConflictError(err)) {
-      throw new ConcurrentInstallOperationError(
-        `Concurrent installation or upgrade of ${pkgName || 'unknown'}-${
+      throw new PackageSavedObjectConflictError(
+        `Saved Object conflict encountered while installing ${pkgName || 'unknown'}-${
           pkgVersion || 'unknown'
-        } detected, aborting. Original error: ${err.message}`
+        }. There may be a conflicting Saved Object saved to another Space. Original error: ${
+          err.message
+        }`
       );
     } else {
       throw err;