@aws-amplify/core/dist/esm/awsClients/cognitoIdentity/base.mjs

Core category of aws-amplify

import { getDnsSuffix } from '../../clients/endpoints/getDnsSuffix.mjs';
import '../../types/errors.mjs';
import '../../errors/errorHelpers.mjs';
import { unauthenticatedHandler } from '../../clients/handlers/unauthenticated.mjs';
import { jitteredBackoff } from '../../clients/middleware/retry/jitteredBackoff.mjs';
import { getRetryDecider } from '../../clients/middleware/retry/defaultRetryDecider.mjs';
import '@aws-crypto/sha256-js';
import '@smithy/util-hex-encoding';
import { AmplifyUrl } from '../../utils/amplifyUrl/index.mjs';
import { composeTransferHandler } from '../../clients/internal/composeTransferHandler.mjs';
import { parseJsonError } from '../../clients/serde/json.mjs';
import { getAmplifyUserAgent } from '../../Platform/index.mjs';
import { observeFrameworkChanges } from '../../Platform/detectFramework.mjs';

// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
/**
 * The service name used to sign requests if the API requires authentication.
 */
const SERVICE_NAME = 'cognito-identity';
/**
 * The endpoint resolver function that returns the endpoint URL for a given region.
 */
const endpointResolver = ({ region }) => ({
    url: new AmplifyUrl(`https://cognito-identity.${region}.${getDnsSuffix(region)}`),
});
/**
 * A Cognito Identity-specific middleware that disables caching for all requests.
 */
const disableCacheMiddlewareFactory = () => next => async function disableCacheMiddleware(request) {
    request.headers['cache-control'] = 'no-store';
    return next(request);
};
/**
 * A Cognito Identity-specific transfer handler that does NOT sign requests, and
 * disables caching.
 *
 * @internal
 */
const cognitoIdentityTransferHandler = composeTransferHandler(unauthenticatedHandler, [disableCacheMiddlewareFactory]);
/**
 * @internal
 */
const defaultConfig = {
    service: SERVICE_NAME,
    endpointResolver,
    retryDecider: getRetryDecider(parseJsonError),
    computeDelay: jitteredBackoff,
    userAgentValue: getAmplifyUserAgent(),
    cache: 'no-store',
};
observeFrameworkChanges(() => {
    defaultConfig.userAgentValue = getAmplifyUserAgent();
});
/**
 * @internal
 */
const getSharedHeaders = (operation) => ({
    'content-type': 'application/x-amz-json-1.1',
    'x-amz-target': `AWSCognitoIdentityService.${operation}`,
});
/**
 * @internal
 */
const buildHttpRpcRequest = ({ url }, headers, body) => ({
    headers,
    url,
    body,
    method: 'POST',
});

export { buildHttpRpcRequest, cognitoIdentityTransferHandler, defaultConfig, getSharedHeaders };
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