如何在 Python 中使用 boto3 检查 S3 上传的状态

Question

Here is my code for upload a file to S3 bucket sing boto3 in python.

import boto3

def upload_to_s3(backupFile, s3Bucket, bucket_directory, file_format):
    s3 = boto3.resource('s3')
    s3.meta.client.upload_file(backupFile, s3Bucket, bucket_directory.format(file_format))

upload_to_s3('/tmp/backup.py', 'bsfbackup', 'pfsense/{}', 'hello.py')

My question is about, I want to print the "Upload success" once the upload is succeeded, and print "Upload is failed" and the error stack if the uploading is failed. Any help ?

Thanks.

Answer 1

try:
   response = s3_client.upload_file(file_name, bucket, object_name)
except ClientError as e:
   logging.error(e)
   return False
return True

Answer 2

to upload, u can use this alternative also,

The callback will give u the status of how many bytes of data has been transfer

from boto3.s3.transfer import S3Transfer
import threading 

def upload(file, input):
    transfer = S3Transfer(s3)
    size = float(os.path.getsize(file))
    transfer.upload_file(**input,
                         callback=_progress(file, size, 'Upload'))

def _progress(filename, size, ops):
    """ indicator to calculate progress based on filesize
    """
    _filename = filename
    _size = size
    _seen_so_far = 0
    _ops = ops
    _lock = threading.Lock()

    def call(bytes_amount):
        with _lock:
            nonlocal _seen_so_far
            _seen_so_far += bytes_amount
            percentage = (_seen_so_far / _size) * 100
            logging.info(
                "%s: %s  %s / %s  (%.2f%%)" % (
                    _ops, _filename, _seen_so_far, _size,
                    percentage))

    return call