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aws s3 npm

Restu Wahyu Saputra answered on October 14, 2022 Popularity 10/10 Helpfulness 2/10

answer aws s3 npm

aws s3 npm

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import { S3 } from 'aws-sdk'
import { ManagedUpload } from 'aws-sdk/clients/s3'
import fs from 'fs'
import log4, { Logger } from 'log4js'

export class CloudStorage {
	private static bucketName: string = process.env.S3_BUCKET_NAME
	private static logger: Logger = log4.getLogger('S3 CloudStorage')

	static s3(): S3 {
		return new S3({
			apiVersion: '2010-12-01',
			credentials: {
				accessKeyId: process.env.S3_ACCESS_KEY,
				secretAccessKey: process.env.S3_SECRET_KEY
			},
			region: process.env.S3_REGION,
			logger: {
				log(content): void {
					CloudStorage.logger.info(`S3 CloudStorage Info: ${content}`)
				},
				warn(content): void {
					CloudStorage.logger.warn(`S3 CloudStorage Warning: ${content}`)
				}
			}
		})
	}

	static getFileMetadata(filename: string): Promise<S3.GetObjectOutput> {
		return new Promise((resolve, reject) => {
			CloudStorage.s3().getBucketLocation({ Bucket: CloudStorage.bucketName }, (err: Error, result: S3.GetBucketLocationOutput): void => {
				if (result) {
					CloudStorage.s3().getObject({ Bucket: CloudStorage.bucketName, Key: filename, ResponseContentType: 'application/octet-stream' }, (err: Error, result: S3.GetObjectOutput) => {
						if (!err) resolve(result)
						else reject(err)
					})
				} else reject(err)
			})
		})
	}

	static bucketExist(): Promise<S3.GetBucketLocationOutput> {
		return new Promise((resolve, reject) => {
			CloudStorage.s3().getBucketLocation({ Bucket: CloudStorage.bucketName }, (err: Error, result: S3.GetBucketLocationOutput): void => {
				if (!err) resolve(result)
				else reject(err)
			})
		})
	}

	static getListBucket(): Promise<S3.ListBucketsOutput> {
		return new Promise((resolve, reject) => {
			CloudStorage.s3().listBuckets((err: Error, result: S3.ListBucketsOutput): void => {
				if (!err) resolve(result)
				else reject(err)
			})
		})
	}

	static downloadFile(filename: string): Promise<Buffer> {
		return new Promise((resolve, reject) => {
			CloudStorage.s3().getBucketLocation({ Bucket: CloudStorage.bucketName }, (err: Error, result: S3.GetBucketLocationOutput): void => {
				if (result) {
					CloudStorage.s3().getObject({ Bucket: CloudStorage.bucketName, Key: filename }, (err: Error, result: S3.GetObjectOutput) => {
						if (!err) resolve(result.Body as Buffer)
						else reject(err)
					})
				} else reject(err)
			})
		})
	}

	static getFileUrl(filename: string): Promise<string> {
		return new Promise((resolve, reject) => {
			CloudStorage.s3().getBucketLocation({ Bucket: CloudStorage.bucketName }, (err: Error, result: S3.GetBucketLocationOutput): void => {
				if (result) {
					CloudStorage.s3().getSignedUrl(CloudStorage.bucketName, filename, (err: Error, result: string) => {
						if (!err) resolve(result)
						else reject(err)
					})
				} else reject(err)
			})
		})
	}

	static uploadFile(filename: string, body: fs.ReadStream): Promise<string> {
		return new Promise((resolve, reject) => {
			CloudStorage.s3().getBucketLocation({ Bucket: CloudStorage.bucketName }, (err: Error, result: S3.GetBucketLocationOutput): void => {
				if (result) {
					CloudStorage.s3().upload({ Bucket: CloudStorage.bucketName, Key: filename, Body: body, ACL: 'public-read' }, (err: Error, result: ManagedUpload.SendData) => {
						if (!err) resolve(result.Location)
						else reject(err)
					})
				} else reject(err)
			})
		})
	}
}

Popularity 10/10 Helpfulness 2/10 Language typescript

Source: Grepper

Tags: aws-sdk npm typescript

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Contributed on Oct 14 2022

Restu Wahyu Saputra

0 Answers Avg Quality 2/10

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