fix(middleware-flexible-checksums): use input from args and not middleware config

Author: trivikr

packages/middleware-flexible-checksums/src/flexibleChecksumsMiddleware.spec.ts

@@ -29,12 +29,12 @@ describe(flexibleChecksumsMiddleware.name, () => {
 
   const mockInput = {};
   const mockConfig = {} as PreviouslyResolved;
-  const mockMiddlewareConfig = { input: mockInput, requestChecksumRequired: false };
+  const mockMiddlewareConfig = { requestChecksumRequired: false };
 
   const mockBody = { body: "mockRequestBody" };
   const mockHeaders = { "content-length": 100, "content-encoding": "gzip" };
   const mockRequest = { body: mockBody, headers: mockHeaders };
-  const mockArgs = { request: mockRequest } as BuildHandlerArguments<any>;
+  const mockArgs = { input: mockInput, request: mockRequest } as BuildHandlerArguments<any>;
   const mockResult = { response: { body: "mockResponsebody" } };
 
   beforeEach(() => {

packages/middleware-flexible-checksums/src/flexibleChecksumsMiddleware.ts

@@ -21,10 +21,6 @@ import { stringHasher } from "./stringHasher";
 
 export interface FlexibleChecksumsRequestMiddlewareConfig {
   /**
-   * The input object for the operation.
-   */
-  input: Object;
-
   /**
    * Indicates an operation requires a checksum in its HTTP request.
    */
@@ -57,10 +53,10 @@ export const flexibleChecksumsMiddleware =
       return next(args);
     }
 
-    const { request } = args;
+    const { request, input } = args;
     const { body: requestBody, headers } = request;
     const { base64Encoder, streamHasher } = config;
-    const { input, requestChecksumRequired, requestAlgorithmMember } = middlewareConfig;
+    const { requestChecksumRequired, requestAlgorithmMember } = middlewareConfig;
 
     const checksumAlgorithm = getChecksumAlgorithmForRequest(
       input,