feat(experimentalIdentityAndAuth): update HttpAuthScheme and IdentityProviderConfig interfaces

Update `HttpAuthScheme` to use `IdentityProviderConfig` as an
abstraction over a client's configuration.

Author: Steven Yuan

.changeset/grumpy-turtles-sing.md

@@ -0,0 +1,5 @@
+---
+"@smithy/experimental-identity-and-auth": patch
+---
+
+INTERNAL USE ONLY: Update `HttpAuthScheme` and `IdentityProviderConfig` interfaces

packages/experimental-identity-and-auth/src/HttpAuthScheme.ts

@@ -1,6 +1,7 @@
 import { Identity, IdentityProvider } from "@smithy/types";
 
 import { HttpSigner } from "./HttpSigner";
+import { IdentityProviderConfig } from "./IdentityProviderConfig";
 
 /**
  * ID for {@link HttpAuthScheme}
@@ -20,7 +21,7 @@ export interface HttpAuthScheme {
   /**
    * IdentityProvider corresponding to an HttpAuthScheme.
    */
-  identityProvider: IdentityProvider<Identity>;
+  identityProvider: (config: IdentityProviderConfig) => IdentityProvider<Identity> | undefined;
   /**
    * HttpSigner corresponding to an HttpAuthScheme.
    */

packages/experimental-identity-and-auth/src/IdentityProviderConfiguration.ts renamed to packages/experimental-identity-and-auth/src/IdentityProviderConfig.ts

@@ -1,32 +1,26 @@
 import { Identity, IdentityProvider } from "@smithy/types";
 
-import { HttpAuthScheme, HttpAuthSchemeId } from "./HttpAuthScheme";
+import { HttpAuthSchemeId } from "./HttpAuthScheme";
 
 /**
  * Interface to get an IdentityProvider for a specified HttpAuthScheme
  * @internal
  */
-export interface IdentityProviderConfiguration {
+export interface IdentityProviderConfig {
   /**
    * Get the IdentityProvider for a specified HttpAuthScheme.
    * @param schemeId schemeId of the HttpAuthScheme
    * @returns IdentityProvider or undefined if HttpAuthScheme is not found
    */
   getIdentityProvider(schemeId: HttpAuthSchemeId): IdentityProvider<Identity> | undefined;
-
-  /**
-   * Gets the configured HttpAuthSchemes.
-   * @returns all configured HttpAuthSchemes
-   */
-  getAuthSchemes(): Map<HttpAuthSchemeId, HttpAuthScheme>;
 }
 
 /**
  * Default implementation of IdentityProviderConfiguration
  * @internal
  */
-export class DefaultIdentityProviderConfiguration implements IdentityProviderConfiguration {
-  private authSchemes: Map<HttpAuthSchemeId, HttpAuthScheme> = new Map();
+export class DefaultIdentityProviderConfig implements IdentityProviderConfig {
+  private authSchemes: Map<HttpAuthSchemeId, IdentityProvider<Identity>> = new Map();
 
   /**
    * Creates an IdentityProviderConfiguration with a list of HttpAuthSchemes.
@@ -35,17 +29,13 @@ export class DefaultIdentityProviderConfiguration implements IdentityProviderCon
    * HttpAuthScheme later in the list will have priority.
    * @param authSchemes auth schemes to configure
    */
-  constructor(authSchemes: HttpAuthScheme[]) {
-    for (const authScheme of authSchemes) {
-      this.authSchemes.set(authScheme.schemeId, authScheme);
+  constructor(config: Record<HttpAuthSchemeId, IdentityProvider<Identity>>) {
+    for (const [key, value] of Object.entries(config)) {
+      this.authSchemes.set(key, value);
     }
   }
 
   public getIdentityProvider(schemeId: HttpAuthSchemeId): IdentityProvider<Identity> | undefined {
-    return this.authSchemes.get(schemeId)?.identityProvider;
-  }
-
-  public getAuthSchemes(): Map<HttpAuthSchemeId, HttpAuthScheme> {
-    return this.authSchemes;
+    return this.authSchemes.get(schemeId);
   }
 }

packages/experimental-identity-and-auth/src/index.ts

@@ -1,6 +1,6 @@
-export * from "./IdentityProviderConfiguration";
 export * from "./HttpAuthScheme";
 export * from "./HttpSigner";
+export * from "./IdentityProviderConfig";
 export * from "./SigV4Signer";
 export * from "./apiKeyIdentity";
 export * from "./httpApiKeyAuth";