Для кого-то ищущего NEST JS TYPESCRIPT
версия вышеупомянутого:
/**
* to fetch a signed URL of a file
* @param key key of the file to be fetched
* @param bucket name of the bucket containing the file
*/
public getFileUrl(key: string, bucket?: string): Promise<string> {
var scopeBucket: string = bucket ? bucket : this.defaultBucket;
var params: any = {
Bucket: scopeBucket,
Key: key,
Expires: signatureTimeout // const value: 30
};
return this.account.getSignedUrlPromise(getSignedUrlObject, params);
}
/**
* to get the downloadable file buffer of the file
* @param key key of the file to be fetched
* @param bucket name of the bucket containing the file
*/
public async getFileBuffer(key: string, bucket?: string): Promise<Buffer> {
var scopeBucket: string = bucket ? bucket : this.defaultBucket;
var params: GetObjectRequest = {
Bucket: scopeBucket,
Key: key
};
var fileObject: GetObjectOutput = await this.account.getObject(params).promise();
return Buffer.from(fileObject.Body.toString());
}
/**
* to upload a file stream onto AWS S3
* @param stream file buffer to be uploaded
* @param key key of the file to be uploaded
* @param bucket name of the bucket
*/
public async saveFile(file: Buffer, key: string, bucket?: string): Promise<any> {
var scopeBucket: string = bucket ? bucket : this.defaultBucket;
var params: any = {
Body: file,
Bucket: scopeBucket,
Key: key,
ACL: 'private'
};
var uploaded: any = await this.account.upload(params).promise();
if (uploaded && uploaded.Location && uploaded.Bucket === scopeBucket && uploaded.Key === key)
return uploaded;
else {
throw new HttpException("Error occurred while uploading a file stream", HttpStatus.BAD_REQUEST);
}
}