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✨ Add support to download and validate snapshot from url
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| /* | ||
| * LiskHQ/lisk-commander | ||
| * Copyright © 2023 Lisk Foundation | ||
| * | ||
| * See the LICENSE file at the top-level directory of this distribution | ||
| * for licensing information. | ||
| * | ||
| * Unless otherwise agreed in a custom licensing agreement with the Lisk Foundation, | ||
| * no part of this software, including this file, may be copied, modified, | ||
| * propagated, or distributed except according to the terms contained in the | ||
| * LICENSE file. | ||
| * | ||
| * Removal or modification of this copyright notice is prohibited. | ||
| * | ||
| */ | ||
| import * as crypto from 'crypto'; | ||
| import * as axios from 'axios'; | ||
| import * as fs from 'fs-extra'; | ||
| import * as path from 'path'; | ||
| import { extractTarBall } from './fs'; | ||
| import { FileInfo } from '../types'; | ||
|
|
||
| export const getDownloadedFileInfo = (url: string, downloadDir: string): FileInfo => { | ||
| const pathWithoutProtocol = url.replace(/(^\w+:|^)\/\//, '').split('/'); | ||
| const fileName = pathWithoutProtocol.pop() as string; | ||
| const filePath = path.join(downloadDir, fileName); | ||
|
|
||
| return { | ||
| fileName, | ||
| fileDir: downloadDir, | ||
| filePath, | ||
| }; | ||
| }; | ||
|
|
||
| export const download = async (url: string, dir: string): Promise<void> => { | ||
| const { filePath, fileDir } = getDownloadedFileInfo(url, dir); | ||
|
|
||
| if (fs.existsSync(filePath)) { | ||
| fs.unlinkSync(filePath); | ||
| } | ||
|
|
||
| fs.ensureDirSync(fileDir); | ||
| const writeStream = fs.createWriteStream(filePath); | ||
| const response = await axios.default({ | ||
| url, | ||
| method: 'GET', | ||
| responseType: 'stream', | ||
| maxContentLength: 5000, | ||
| }); | ||
|
|
||
| response.data.pipe(writeStream); | ||
|
|
||
| return new Promise<void>((resolve, reject) => { | ||
| writeStream.on('finish', resolve); | ||
| writeStream.on('error', reject); | ||
| }); | ||
| }; | ||
|
|
||
| export const verifyChecksum = async (filePath: string, expectedChecksum: string): Promise<void> => { | ||
| const fileStream = fs.createReadStream(filePath); | ||
| const dataHash = crypto.createHash('sha256'); | ||
| const fileHash = await new Promise<Buffer>((resolve, reject) => { | ||
| fileStream.on('data', (datum: Buffer) => { | ||
| dataHash.update(datum); | ||
| }); | ||
| fileStream.on('error', error => { | ||
| reject(error); | ||
| }); | ||
| fileStream.on('end', () => { | ||
| resolve(dataHash.digest()); | ||
| }); | ||
| }); | ||
|
|
||
| const fileChecksum = fileHash.toString('hex'); | ||
| if (fileChecksum !== expectedChecksum) { | ||
| throw new Error( | ||
| `File checksum: ${fileChecksum} mismatched with expected checksum: ${expectedChecksum}`, | ||
| ); | ||
| } | ||
| }; | ||
|
|
||
| export const getChecksum = (url: string, dir: string): string => { | ||
| const { filePath } = getDownloadedFileInfo(url, dir); | ||
| const content = fs.readFileSync(`${filePath}.SHA256`, 'utf8'); | ||
|
|
||
| if (!content) { | ||
| throw new Error(`Invalid filepath: ${filePath}`); | ||
| } | ||
|
|
||
| return content.split(' ')[0]; | ||
| }; | ||
|
|
||
| export const downloadAndValidate = async ( | ||
| url: string, | ||
| snapshotDirPath: string, | ||
| extractSnapshotPath: string, | ||
| ): Promise<void> => { | ||
| await download(url, snapshotDirPath); | ||
| await download(`${url}.SHA256`, snapshotDirPath); | ||
| const { filePath } = getDownloadedFileInfo(url, snapshotDirPath); | ||
| const checksum = getChecksum(url, snapshotDirPath); | ||
| await verifyChecksum(filePath, checksum); | ||
| await extractTarBall(filePath, extractSnapshotPath); | ||
| }; |
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