Improves connection pooling support for AWSSigV4 clients in data sou…

…rces. (#6135)

* Upgrade @opensearch/opensearch@2.6.0 which inherits AWSSigv4 to .child

Signed-off-by: Bandini Bhopi <bandinib@amazon.com>

* Uses client.child for aws sigv4 connection

Signed-off-by: Bandini Bhopi <bandinib@amazon.com>

* Import http-aws-es connector class

Signed-off-by: Bandini Bhopi <bandinib@amazon.com>

* Refactor client caching mechanism

Signed-off-by: Bandini Bhopi <bandinib@amazon.com>

* Fix UT

Signed-off-by: Bandini Bhopi <bandinib@amazon.com>

* Added UT for client pool

Signed-off-by: Bandini Bhopi <bandinib@amazon.com>

* Revert client pool changes from authentication method

Signed-off-by: Bandini Bhopi <bandinib@amazon.com>

---------

Signed-off-by: Bandini Bhopi <bandinib@amazon.com>
(cherry picked from commit 09f5563)

package.json

@@ -148,7 +148,7 @@
     "@hapi/vision": "^6.1.0",
     "@hapi/wreck": "^17.1.0",
     "@opensearch-project/opensearch": "^1.1.0",
-    "@opensearch-project/opensearch-next": "npm:@opensearch-project/opensearch@^2.3.1",
+    "@opensearch-project/opensearch-next": "npm:@opensearch-project/opensearch@^2.6.0",
     "@osd/ace": "1.0.0",
     "@osd/analytics": "1.0.0",
     "@osd/apm-config-loader": "1.0.0",

src/plugins/data_source/server/auth_registry/authentication_methods_registry.test.ts

@@ -5,13 +5,11 @@
 
 import { AuthenticationMethodRegistery } from './authentication_methods_registry';
 import { AuthenticationMethod } from '../../server/types';
-import { AuthType } from '../../common/data_sources';
 
 const createAuthenticationMethod = (
   authMethod: Partial<AuthenticationMethod>
 ): AuthenticationMethod => ({
   name: 'unknown',
-  authType: AuthType.NoAuth,
   credentialProvider: jest.fn(),
   ...authMethod,
 });
@@ -61,14 +59,14 @@ describe('AuthenticationMethodRegistery', () => {
       registry.registerAuthenticationMethod(
         createAuthenticationMethod({
           name: 'typeA',
-          authType: AuthType.NoAuth,
+          credentialProvider: jest.fn(),
         })
       );
 
       const typeA = registry.getAuthenticationMethod('typeA')!;
 
       expect(() => {
-        typeA.authType = AuthType.SigV4;
+        typeA.credentialProvider = jest.fn();
       }).toThrow();
       expect(() => {
         typeA.name = 'foo';

src/plugins/data_source/server/auth_registry/authentication_methods_registry.ts

@@ -5,6 +5,7 @@
 
 import { deepFreeze } from '@osd/std';
 import { AuthenticationMethod } from '../../server/types';
+import { AuthType } from '../../common/data_sources';
 
 export type IAuthenticationMethodRegistery = Omit<
   AuthenticationMethodRegistery,
@@ -18,6 +19,15 @@ export class AuthenticationMethodRegistery {
    * Authentication Method can only be registered once. subsequent calls with the same method name will throw an error.
    */
   public registerAuthenticationMethod(method: AuthenticationMethod) {
+    if (
+      method.name === AuthType.NoAuth ||
+      method.name === AuthType.UsernamePasswordType ||
+      method.name === AuthType.SigV4
+    ) {
+      throw new Error(
+        `Must not be no_auth or username_password or sigv4 for registered auth types`
+      );
+    }
     if (this.authMethods.has(method.name)) {
       throw new Error(`Authentication method '${method.name}' is already registered`);
     }

src/plugins/data_source/server/client/configure_client.test.mocks.ts

@@ -21,12 +21,3 @@ export const authRegistryCredentialProviderMock = jest.fn();
 jest.doMock('../util/credential_provider', () => ({
   authRegistryCredentialProvider: authRegistryCredentialProviderMock,
 }));
-
-export const CredentialsMock = jest.fn();
-jest.doMock('aws-sdk', () => {
-  const actual = jest.requireActual('aws-sdk');
-  return {
-    ...actual,
-    Credentials: CredentialsMock,
-  };
-});