114 lines
3.3 KiB
TypeScript
114 lines
3.3 KiB
TypeScript
import {
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FILE_CHUNKS_COMBINED_FOR_A_UPLOAD_PART,
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DataStream,
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} from './uploadService';
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import UploadHttpClient from './uploadHttpClient';
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import * as convert from 'xml-js';
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import UIService, { RANDOM_PERCENTAGE_PROGRESS_FOR_PUT } from './uiService';
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import { CustomError } from 'utils/common/errorUtil';
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interface PartEtag {
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PartNumber: number;
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ETag: string;
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}
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export interface MultipartUploadURLs {
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objectKey: string;
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partURLs: string[];
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completeURL: string;
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}
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function calculatePartCount(chunkCount: number) {
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const partCount = Math.ceil(
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chunkCount / FILE_CHUNKS_COMBINED_FOR_A_UPLOAD_PART
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);
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return partCount;
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}
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export async function uploadStreamUsingMultipart(
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filename: string,
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dataStream: DataStream
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) {
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const uploadPartCount = calculatePartCount(dataStream.chunkCount);
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const multipartUploadURLs = await UploadHttpClient.fetchMultipartUploadURLs(
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uploadPartCount
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);
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const fileObjectKey = await uploadStreamInParts(
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multipartUploadURLs,
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dataStream.stream,
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filename,
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uploadPartCount
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);
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return fileObjectKey;
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}
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export async function uploadStreamInParts(
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multipartUploadURLs: MultipartUploadURLs,
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dataStream: ReadableStream<Uint8Array>,
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filename: string,
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uploadPartCount: number
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) {
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const streamReader = dataStream.getReader();
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const percentPerPart = getRandomProgressPerPartUpload(uploadPartCount);
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const partEtags: PartEtag[] = [];
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for (const [
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index,
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fileUploadURL,
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] of multipartUploadURLs.partURLs.entries()) {
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const uploadChunk = await combineChunksToFormUploadPart(streamReader);
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const progressTracker = UIService.trackUploadProgress(
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filename,
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percentPerPart,
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index
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);
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const eTag = await UploadHttpClient.putFilePart(
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fileUploadURL,
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uploadChunk,
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progressTracker
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);
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partEtags.push({ PartNumber: index + 1, ETag: eTag });
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}
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const { done } = await streamReader.read();
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if (!done) {
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throw Error(CustomError.CHUNK_MORE_THAN_EXPECTED);
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}
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await completeMultipartUpload(partEtags, multipartUploadURLs.completeURL);
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return multipartUploadURLs.objectKey;
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}
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function getRandomProgressPerPartUpload(uploadPartCount: number) {
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const percentPerPart = Math.round(
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RANDOM_PERCENTAGE_PROGRESS_FOR_PUT() / uploadPartCount
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);
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return percentPerPart;
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}
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async function combineChunksToFormUploadPart(
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streamReader: ReadableStreamDefaultReader<Uint8Array>
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) {
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const combinedChunks = [];
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for (let i = 0; i < FILE_CHUNKS_COMBINED_FOR_A_UPLOAD_PART; i++) {
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const { done, value: chunk } = await streamReader.read();
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if (done) {
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break;
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}
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for (let index = 0; index < chunk.length; index++) {
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combinedChunks.push(chunk[index]);
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}
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}
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return Uint8Array.from(combinedChunks);
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}
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async function completeMultipartUpload(
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partEtags: PartEtag[],
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completeURL: string
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) {
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const options = { compact: true, ignoreComment: true, spaces: 4 };
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const body = convert.js2xml(
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{ CompleteMultipartUpload: { Part: partEtags } },
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options
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);
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await UploadHttpClient.completeMultipartUpload(completeURL, body);
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}
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