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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,111 @@ | ||
| import { readFileSync } from 'fs'; | ||
| import { scheduleJob } from 'node-schedule'; | ||
| import { Storage, Bucket } from '@google-cloud/storage'; | ||
| import Logger from '../Logger'; | ||
| import { generateReport } from '../report/Report'; | ||
| import SwapRepository from '../service/SwapRepository'; | ||
| import ReverseSwapRepository from '../service/ReverseSwapRepository'; | ||
|
|
||
| type BackupConfig = { | ||
| email: string; | ||
| privatekeypath: string; | ||
|
|
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| bucketname: string; | ||
|
|
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| // The interval has to be a cron schedule expression | ||
| interval: string; | ||
|
|
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| // If set, the database of the backend will also be backed up | ||
| backenddbpath: string; | ||
| }; | ||
|
|
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| class BackupScheduler { | ||
| private bucket?: Bucket; | ||
|
|
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| constructor( | ||
| private logger: Logger, | ||
| private dbpath: string, | ||
| private config: BackupConfig, | ||
| private swapRepository: SwapRepository, | ||
| private reverseSwapRepository: ReverseSwapRepository) { | ||
|
|
||
| if ( | ||
| config.email === '' || | ||
| config.privatekeypath === '' || | ||
| config.bucketname === '' | ||
| ) { | ||
| logger.warn('Disabled backups because of incomplete configuration'); | ||
| return; | ||
| } | ||
|
|
||
| const storage = new Storage({ | ||
| credentials: { | ||
| client_email: config.email, | ||
| private_key: readFileSync(config.privatekeypath, 'utf-8'), | ||
| }, | ||
| }); | ||
|
|
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| this.bucket = storage.bucket(config.bucketname); | ||
|
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| scheduleJob(this.config.interval, async (date) => { | ||
| await this.uploadDatabases(date); | ||
| await this.uploadReport(); | ||
| }); | ||
| } | ||
|
|
||
| public uploadDatabases = async (date: Date) => { | ||
| if (!this.bucket) { | ||
| throw 'Backups are disabled because of incomplete configuration'; | ||
| } | ||
|
|
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| const dateString = this.getDate(date); | ||
| this.logger.silly(`Doing database backup at: ${dateString}`); | ||
|
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| await this.uploadFile(this.dbpath, dateString, true); | ||
|
|
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| if (this.config.backenddbpath !== '') { | ||
| await this.uploadFile(this.config.backenddbpath, dateString, false); | ||
| } | ||
| } | ||
|
|
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| public uploadReport = async () => { | ||
| if (!this.bucket) { | ||
| return; | ||
| } | ||
|
|
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| const file = this.bucket.file('report.csv'); | ||
| const data = await generateReport(this.swapRepository, this.reverseSwapRepository); | ||
|
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| await file.save(data); | ||
|
|
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| this.logger.debug('Uploaded report'); | ||
| } | ||
|
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| private uploadFile = async (fileName: string, date: string, isMiddleware: boolean) => { | ||
| try { | ||
| await this.bucket!.upload(fileName, { | ||
| destination: `${isMiddleware ? 'middleware' : 'backend'}/database-${date}.db`, | ||
| }); | ||
|
|
||
| this.logger.debug(`Uploaded file ${fileName}`); | ||
| } catch (error) { | ||
| this.logger.warn(`Could not upload file: ${error}`); | ||
| throw error; | ||
| } | ||
| } | ||
|
|
||
| private getDate = (date: Date) => { | ||
| return `${date.getFullYear()}${this.addLeadingZeros(date.getMonth())}${this.addLeadingZeros(date.getDay())}` + | ||
| `-${this.addLeadingZeros(date.getHours())}${this.addLeadingZeros(date.getMinutes())}`; | ||
| } | ||
|
|
||
| /** | ||
| * Adds a leading 0 to the provided number if it is smalled than 10 | ||
| */ | ||
| private addLeadingZeros = (number: number) => { | ||
| return `${number}`.padStart(2, '0'); | ||
| } | ||
| } | ||
|
|
||
| export default BackupScheduler; | ||
| export { BackupConfig }; |
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