从s3的GLACIER上批量下载对象的Python代码
从s3的GLACIER上批量下载对象的Python代码
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322#!/usr/bin/env python
# -*- coding: utf-8 -*-
import logging
import boto3
from botocore.exceptions import ClientError
import sys
import os
import time
import botocore
BUCKET_NAME=""
OBJECT_NAME=""
LOCAL_PATH=""
PREFIX=""
# restore object
def restore_object(bucket_name, object_name, days, retrieval_type='Standard'):
"""Restore an archived S3 Glacier object in an Amazon S3 bucket
:param bucket_name: string
:param object_name: string
:param days: number of days to retain restored object
:param retrieval_type: 'Standard' | 'Expedited' | 'Bulk'
:return: True if a request to restore archived object was submitted, otherwise
False
"""
# Create request to restore object
request = {'Days': days,
'GlacierJobParameters': {'Tier': retrieval_type}}
# Submit the request
s3 = boto3.client('s3')
try:
s3.restore_object(Bucket=bucket_name, Key=object_name, RestoreRequest=request)
except ClientError as e:
# NoSuchBucket, NoSuchKey, or InvalidObjectState error == the object's
# storage class was not GLACIER
logging.error(e)
return False
return True
# head object
def head_object(bucket_name, object_name):
"""Restore an archived S3 Glacier object in an Amazon S3 bucket
:param bucket_name: string
:param object_name: string
:param days: number of days to retain restored object
:param retrieval_type: 'Standard' | 'Expedited' | 'Bulk'
:return: True if a request to restore archived object was submitted, otherwise
False
"""
# Submit the request
s3 = boto3.client('s3')
response = None
try:
response = s3.head_object(Bucket=bucket_name, Key=object_name)
except ClientError as e:
# NoSuchBucket, NoSuchKey, or InvalidObjectState error == the object's
# storage class was not GLACIER
logging.error(e)
logging.error(f"NoSuchBucket, NoSuchKey, or InvalidObjectState error == the object's, storage class was not GLACIER. {bucket_name} {object_name} ")
return None
return response
# list object
def list_bucket_objects(bucket_name, prefix=None):
"""List the objects in an Amazon S3 bucket
:param bucket_name: string
:return: List of bucket objects. If error, return None.
"""
# Retrieve the list of bucket objects
s_3 = boto3.client('s3')
try:
if prefix:
response = s_3.list_objects_v2(Bucket=bucket_name, Prefix=prefix)
else:
response = s_3.list_objects_v2(Bucket=bucket_name)
except ClientError as e:
# AllAccessDisabled error == bucket not found
logging.error(e)
return None
# Only return the contents if we found some keys
if response['KeyCount'] > 0:
return response['Contents']
return None
# download file
def download_object(bucket_name, object_name, local):
s3 = boto3.resource('s3')
try:
s3.Bucket(bucket_name).download_file(object_name, local+object_name)
except ClientError as e:
if e.response['Error']['Code'] == "404":
logging.error(f"The object does not exist. {bucket_name} {object_name}")
return False
return True
# mkdir
def mkdir(path):
if os.path.exists(path):
return True
os.makedirs(path, 0o770, exist_ok=True)
return True
# 下载
def download_objects(bucket_name, object_name, local, progress_call=None):
objects = list_bucket_objects(bucket_name, object_name)
# no object
if not objects:
return False
count = 0
# show object list
logging.info(f"*********object list begin************")
for obj in objects:
count+=1
logging.info(f"{obj['Key']}")
logging.info(f"*********object list count {count}************")
long_time_wait = False
# restore all objects
for obj in objects:
# {'Key': 'a/b/c/d.xml'
# , 'LastModified': datetime.datetime(2019, 11, 26, 8, 26, 24, tzinfo=tzutc())
# , 'ETag': '"1234948ca1db112382c26d07db83971a"'
# , 'Size': 2518
# , 'StorageClass': 'GLACIER'}
response = head_object(bucket_name, obj['Key'])
# not in statdrad and not restore
if (obj['StorageClass'] != 'STANDRAD' or obj['StorageClass'] != 'STANDRAD_IA') and not response.get('Restore'):
# start restore 一天20G
days = obj['Size']//20000000000 + 1
success = restore_object(bucket_name, obj['Key'], days, 'Standard')
if not success:
return False
long_time_wait = True
downloaded = []
download_count = 0
is_complete = True
while True:
for obj in objects:
if obj['Key'] in downloaded:
continue
response = head_object(bucket_name, obj['Key'])
if not response:
return False
#
if (obj['StorageClass'] != 'STANDRAD' or obj['StorageClass'] != 'STANDRAD_IA') and not response.get('Restore'):
# start restore
days = obj['Size']//20000000000 + 1
success = restore_object(bucket_name, obj['Key'], days, 'Standard')
if not success:
return False
continue
if obj['StorageClass'] != 'STANDRAD' or obj['StorageClass'] != 'STANDRAD_IA':
restore = response['Restore']
index = restore.find('ongoing-request=\"false\"')
if -1 == index:
logging.info(f"{obj['Key']} 正在还原中...")
continue
else:
expiry = restore[restore.find('expiry-date='):]
logging.debug(f"{obj['Key']} 还原成功. {restore[restore.find('expiry-date='):]}")
# download
path = local + obj['Key']
path = os.path.dirname(path) + "/"
mkdir(path)
logging.info(f"{obj['Key']} 开始下载...")
success = download_object(bucket_name, obj['Key'], local)
if success:
logging.info(f"{obj['Key']} 下载成功.")
downloaded.append(obj['Key'])
if progress_call:
download_count+=1
progress_call(count, download_count, obj['Key'])
# is complate
for obj in objects:
if obj['Key'] in downloaded:
continue
is_complete = False
if is_complete:
logging.info(f"All objects downloads successful!")
# The download is complete
break
# waiting
logging.info("Sleep and wait restore...")
if long_time_wait: #
long_time_wait = False
time.sleep(60*60)
else: #
time.sleep(5*60)
return is_complete
# 进度
next_commint=0
def progress_call(count, downloads, obj_name):
global next_commint
percent = (100*downloads)//count
if percent >= next_commint:
next_commint += 5
logging.info(f"downloads percent {percent}%!")
return True
# test
def test_mkdir():
mkdir('e:/data/111/222/333')
return True
def test_download_object():
"""Exercise restore_object()"""
# Assign these values before running the program
test_bucket_name = BUCKET_NAME
test_object_name = OBJECT_NAME
# Restore archived object for two days. Expedite the restoration.
success = download_object(test_bucket_name, test_object_name, 'E:/data/')
if success:
logging.info(f'Submitted request to restore {test_object_name} '
f'in {test_bucket_name}')
logging.info(f'{success}')
return success
def test_restore_object():
"""Exercise restore_object()"""
# Assign these values before running the program
test_bucket_name = BUCKET_NAME
test_object_name = OBJECT_NAME
# Restore archived object for two days. Expedite the restoration.
success = restore_object(test_bucket_name, test_object_name, 2, 'Expedited')
if success:
logging.info(f'Submitted request to restore {test_object_name} '
f'in {test_bucket_name}')
logging.info(f'restore object {success}')
return success
def test_head_object():
"""Exercise restore_object()"""
# Assign these values before running the program
test_bucket_name = BUCKET_NAME
test_object_name = OBJECT_NAME
# head object.
success = head_object(test_bucket_name, test_object_name)
if success:
logging.info(f'Submitted request to restore {test_object_name} '
f'in {test_bucket_name}')
if success.get('Restore'):
logging.info('Restore {}'.format(success['Restore']))
index = success['Restore'].find('ongoing-request=\"false\"')
if -1 == index:
logging.info("正在还原...")
else:
logging.info(success['Restore'][success['Restore'].find('expiry-date='):])
logging.info("还原成功.")
else:
logging.info('need restore object {} {}'.format(test_bucket_name, test_object_name))
# logging.info(f'{success}')
return success
def test_list_bucket_objects():
"""Exercise list_bucket_objects()"""
bucket_name = BUCKET_NAME
prefix = PREFIX
# Retrieve the bucket's objects
objects = list_bucket_objects(bucket_name, prefix)
if objects is not None:
# List the object names
logging.info(f'Objects in {bucket_name}')
for obj in objects:
logging.info(f' {obj["Key"]}')
else:
# Didn't get any keys
logging.info(f'No objects in {bucket_name}')
def test_download_objects():
success = download_objects(BUCKET_NAME, OBJECT_NAME, LOCAL_PATH, progress_call)
return success
if __name__ == '__main__':
# Set up logging
# logging.basicConfig(level=logging.ERROR, format='%(levelname)s: %(asctime)s: %(message)s', datefmt='%Y-%m-%d %H:%M:%S')
# logging.basicConfig(level=logging.WARNING, format='%(levelname)s: %(asctime)s: %(message)s', datefmt='%Y-%m-%d %H:%M:%S')
logging.basicConfig(level=logging.INFO, format='%(levelname)s: %(asctime)s: %(message)s', datefmt='%Y-%m-%d %H:%M:%S')
# logging.basicConfig(level=logging.DEBUG, format='%(levelname)s: %(asctime)s: %(message)s', datefmt='%Y-%m-%d %H:%M:%S')
global BUCKET_NAME
global OBJECT_NAME
global LOCAL_PATH
global PREFIX
BUCKET_NAME="mybucket" # 桶名
OBJECT_NAME="obj/list1/" # 批量下载的前缀
LOCAL_PATH = "e:/download/" # 放置目录
PREFIX="show" # 查询时使用的前缀
# test_download_objects()
# test_download_object()
# test_mkdir()
test_download_objects()
