@aws-amplify/storage/dist/esm/providers/s3/utils/client/runtime/xhrTransferHandler.mjs.map

Storage category of aws-amplify

{"version":3,"file":"xhrTransferHandler.mjs","sources":["../../../../../../../src/providers/s3/utils/client/runtime/xhrTransferHandler.ts"],"sourcesContent":["// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.\n// SPDX-License-Identifier: Apache-2.0\nimport { withMemoization, } from '@aws-amplify/core/internals/aws-client-utils';\nimport { ConsoleLogger } from '@aws-amplify/core';\nimport { CanceledError } from '../../../../../errors/CanceledError';\nimport { StorageError } from '../../../../../errors/StorageError';\nimport { ABORT_ERROR_CODE, ABORT_ERROR_MESSAGE, CANCELED_ERROR_CODE, CANCELED_ERROR_MESSAGE, NETWORK_ERROR_CODE, NETWORK_ERROR_MESSAGE, } from './constants';\nconst logger = new ConsoleLogger('xhr-http-handler');\n/**\n * Base transfer handler implementation using XMLHttpRequest to support upload and download progress events.\n *\n * @param request - The request object.\n * @param options - The request options.\n * @returns A promise that will be resolved with the response object.\n *\n * @internal\n */\nexport const xhrTransferHandler = (request, options) => {\n    const { url, method, headers, body } = request;\n    const { onDownloadProgress, onUploadProgress, responseType, abortSignal } = options;\n    return new Promise((resolve, reject) => {\n        let xhr = new XMLHttpRequest();\n        xhr.open(method.toUpperCase(), url.toString());\n        Object.entries(headers)\n            .filter(([header]) => !FORBIDDEN_HEADERS.includes(header))\n            .forEach(([header, value]) => {\n            xhr.setRequestHeader(header, value);\n        });\n        xhr.responseType = responseType;\n        if (onDownloadProgress) {\n            xhr.addEventListener('progress', event => {\n                onDownloadProgress(convertToTransferProgressEvent(event));\n                logger.debug(event);\n            });\n        }\n        if (onUploadProgress) {\n            xhr.upload.addEventListener('progress', event => {\n                onUploadProgress(convertToTransferProgressEvent(event));\n                logger.debug(event);\n            });\n        }\n        xhr.addEventListener('error', () => {\n            const networkError = new StorageError({\n                message: NETWORK_ERROR_MESSAGE,\n                name: NETWORK_ERROR_CODE,\n            });\n            logger.error(NETWORK_ERROR_MESSAGE);\n            reject(networkError);\n            xhr = null; // clean up request\n        });\n        // Handle browser request cancellation (as opposed to a manual cancellation)\n        xhr.addEventListener('abort', () => {\n            // The abort event can be triggered after the error or load event. So we need to check if the xhr is null.\n            // When request is aborted by AbortSignal, the promise is rejected in the abortSignal's 'abort' event listener.\n            if (!xhr || abortSignal?.aborted)\n                return;\n            // Handle abort request caused by browser instead of AbortController\n            // see: https://github.com/axios/axios/issues/537\n            const error = buildHandlerError(ABORT_ERROR_MESSAGE, ABORT_ERROR_CODE);\n            logger.error(ABORT_ERROR_MESSAGE);\n            reject(error);\n            xhr = null; // clean up request\n        });\n        // Skip handling timeout error since we don't have a timeout\n        xhr.addEventListener('readystatechange', () => {\n            if (!xhr || xhr.readyState !== xhr.DONE) {\n                return;\n            }\n            const onloadend = () => {\n                // The load event is triggered after the error/abort/load event. So we need to check if the xhr is null.\n                if (!xhr)\n                    return;\n                const responseHeaders = convertResponseHeaders(xhr.getAllResponseHeaders());\n                const { responseType: loadEndResponseType } = xhr;\n                const responseBlob = xhr.response;\n                const responseText = loadEndResponseType === 'text' ? xhr.responseText : '';\n                const bodyMixIn = {\n                    blob: () => Promise.resolve(responseBlob),\n                    text: withMemoization(() => loadEndResponseType === 'blob'\n                        ? readBlobAsText(responseBlob)\n                        : Promise.resolve(responseText)),\n                    json: () => Promise.reject(\n                    // S3 does not support JSON response. So fail-fast here with nicer error message.\n                    new Error('Parsing response to JSON is not implemented. Please use response.text() instead.')),\n                };\n                const response = {\n                    statusCode: xhr.status,\n                    headers: responseHeaders,\n                    // The xhr.responseType is only set to 'blob' for streaming binary S3 object data. The streaming data is\n                    // exposed via public interface of Storage.get(). So we need to return the response as a Blob object for\n                    // backward compatibility. In other cases, the response payload is only used internally, we return it is\n                    // {@link ResponseBodyMixin}\n                    body: (xhr.responseType === 'blob'\n                        ? Object.assign(responseBlob, bodyMixIn)\n                        : bodyMixIn),\n                };\n                resolve(response);\n                xhr = null; // clean up request\n            };\n            // readystate handler is calling before onerror or ontimeout handlers,\n            // so we should call onloadend on the next 'tick'\n            // @see https://github.com/axios/axios/blob/9588fcdec8aca45c3ba2f7968988a5d03f23168c/lib/adapters/xhr.js#L98-L99\n            setTimeout(onloadend);\n        });\n        if (abortSignal) {\n            const onCanceled = () => {\n                // The abort event is triggered after the error or load event. So we need to check if the xhr is null.\n                if (!xhr) {\n                    return;\n                }\n                const canceledError = new CanceledError({\n                    name: CANCELED_ERROR_CODE,\n                    message: CANCELED_ERROR_MESSAGE,\n                });\n                reject(canceledError);\n                xhr.abort();\n                xhr = null;\n            };\n            abortSignal.aborted\n                ? onCanceled()\n                : abortSignal.addEventListener('abort', onCanceled);\n        }\n        if (typeof ReadableStream === 'function' &&\n            body instanceof ReadableStream) {\n            // This does not matter as previous implementation uses Axios which does not support ReadableStream anyway.\n            throw new Error('ReadableStream request payload is not supported.');\n        }\n        xhr.send(body ?? null);\n    });\n};\nconst convertToTransferProgressEvent = (event) => ({\n    transferredBytes: event.loaded,\n    totalBytes: event.lengthComputable ? event.total : undefined,\n});\nconst buildHandlerError = (message, name) => {\n    const error = new Error(message);\n    error.name = name;\n    return error;\n};\n/**\n * Convert xhr.getAllResponseHeaders() string to a Record<string, string>. Note that modern browser already returns\n * header names in lowercase.\n * @param xhrHeaders - string of headers returned from xhr.getAllResponseHeaders()\n */\nconst convertResponseHeaders = (xhrHeaders) => {\n    if (!xhrHeaders) {\n        return {};\n    }\n    return xhrHeaders\n        .split('\\r\\n')\n        .reduce((headerMap, line) => {\n        const parts = line.split(': ');\n        const header = parts.shift();\n        const value = parts.join(': ');\n        headerMap[header.toLowerCase()] = value;\n        return headerMap;\n    }, {});\n};\nconst readBlobAsText = (blob) => {\n    const reader = new FileReader();\n    return new Promise((resolve, reject) => {\n        reader.onloadend = () => {\n            if (reader.readyState !== FileReader.DONE) {\n                return;\n            }\n            resolve(reader.result);\n        };\n        reader.onerror = () => {\n            reject(reader.error);\n        };\n        reader.readAsText(blob);\n    });\n};\n// To add more forbidden headers as found set by S3. Intentionally NOT list all of them here to save bundle size.\n// https://developer.mozilla.org/en-US/docs/Glossary/Forbidden_header_name\nconst FORBIDDEN_HEADERS = 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