@aws-amplify/storage
Version:
Storage category of aws-amplify
28 lines (26 loc) • 1.17 kB
JavaScript
;
// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
Object.defineProperty(exports, "__esModule", { value: true });
exports.contentSha256Middleware = void 0;
const aws_client_utils_1 = require("@aws-amplify/core/internals/aws-client-utils");
const constants_1 = require("./constants");
/**
* A middleware that adds the x-amz-content-sha256 header to the request if it is not already present.
* It's required for S3 requests in browsers where the request body is sent in 1 chunk.
* @see https://docs.aws.amazon.com/AmazonS3/latest/API/sig-v4-header-based-auth.html
*
* @internal
*/
const contentSha256Middleware = (options) => (next) => async function contentSha256Middleware(request) {
if (request.headers[constants_1.CONTENT_SHA256_HEADER]) {
return next(request);
}
else {
const hash = await (0, aws_client_utils_1.getHashedPayload)(request.body);
request.headers[constants_1.CONTENT_SHA256_HEADER] = hash;
return next(request);
}
};
exports.contentSha256Middleware = contentSha256Middleware;
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