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s3compress.py
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s3compress.py
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#!/usr/bin/env python
# Copyright 2019 Frederico Marques
import os
import boto3
import argparse
from botocore.exceptions import ClientError
from boto3.s3.transfer import TransferConfig
import zipfile
import shutil
import threading
from queue import Queue
import time
s3 = boto3.client('s3')
s3_resource = boto3.resource('s3')
data_dir = '/tmp/'
config = TransferConfig(
multipart_threshold = 1048576,
multipart_chunksize = 1048576,
max_concurrency = 10,
num_download_attempts = 10,
use_threads = True
)
print_lock = threading.Lock()
def parse_args():
parser = argparse.ArgumentParser(description="S3 compressor")
parser.add_argument('--arch_bucket', help='Destination Archive bucket', required=True)
parser.add_argument('--bucket', help='Source bucket', required=True)
parser.add_argument('--prefix', default='sources', help='prefix')
parser.add_argument('--years', help='years. ex: --years 2016,2017', required=True)
parser.add_argument('--threads', type=int, default=8, help='number of threads')
return parser.parse_args()
def compressor(archive_bucket, bucket, prefix, years):
for year in years:
for month in range(1,13):
for day in range(1,32):
objects = []
if day < 10:
my_day = '0' + str(day)
else:
my_day = str(day)
if month < 10:
my_month = '0' + str(month)
else:
my_month = str(month)
my_prefix = prefix + '/' + str(year) + '/' + my_month + '/' + my_day
try:
paginator = s3.get_paginator('list_objects')
parameters = {'Bucket': bucket, 'Prefix': my_prefix}
pages = paginator.paginate(**parameters)
except ClientError as e:
print("Unable to list objects on bucket %s: %s" % (bucket, e))
for page in pages:
if 'Contents' in page:
for object in page['Contents']:
objects.append(object['Key'])
yearmonthday = year + my_month + my_day
print(yearmonthday)
print("Total: ", len(objects))
if objects:
directory = get_objects(bucket, yearmonthday, objects)
if directory:
zip_file = create_archive(directory)
if upload_archive(archive_bucket, bucket, zip_file):
delete_archive(bucket, yearmonthday, objects)
else:
print("Not deleting files locally or source bucket.")
def get_objects(bucket, yearmonthday, objects):
directory = data_dir + bucket + '/' + yearmonthday
if not os.path.exists(directory):
os.makedirs(directory)
else:
print("Directory %s already exists." % directory)
for key in objects:
sources, year, month, day, remain = key.split('/', 4)
file = directory + '/' + remain.replace('/', '_')
item = {'file' : file, 'key' : key, 'bucket' : bucket}
download_queue.put(item)
download_queue.join()
if not download_queue_dead.empty():
print("Download failure for one more objects on bucket %s." % download_queue_dead.get())
return False
else:
return directory
def download_object():
while True:
item = download_queue.get()
mydata = threading.local()
mydata.file = item['file']
mydata.key = item['key']
mydata.bucket = item['bucket']
with print_lock:
print("Thread : {} - Downloading %s/%s -> %s".format(threading.current_thread().name) % (mydata.bucket, mydata.key, mydata.file))
try:
s3_resource.meta.client.download_file(mydata.bucket, mydata.key, mydata.file, Config=config)
except ClientError as e:
with print_lock:
print("Thread : {} - Unable to download object %s on bucket %s: %s".format(threading.current_thread().name) % (mydata.key, mydata.bucket, e))
download_queue_dead.put(mydata.bucket)
download_queue.task_done()
def create_archive(directory):
z = zipfile.ZipFile(directory + '.zip', 'w', zipfile.ZIP_DEFLATED, allowZip64=True)
for root, dirs, files in os.walk(directory):
for filename in files:
z.write(root + '/' + filename, filename)
z.printdir()
z.close()
return directory + '.zip'
def upload_archive(archive_bucket, bucket, zip_file):
key = bucket + '/' + zip_file.split(data_dir + bucket + '/')[1]
upload_args = {
'StorageClass' : 'GLACIER'
}
print ("Uploading %s to %s/%s" % (zip_file, archive_bucket, key))
try:
s3_resource.meta.client.upload_file(zip_file, archive_bucket, key, ExtraArgs=upload_args)
except ClientError as e:
print("Unable to upload zip_file %s on bucket %s: %s" % (key, archive_bucket, e))
return False
return True
def delete_archive(bucket, yearmonthday, objects):
for object in objects:
item = {'object' : object, 'bucket' : bucket}
delete_queue.put(item)
delete_queue.join()
path = data_dir + bucket + '/' + yearmonthday
print("Deleting %s/*" % path)
shutil.rmtree(path)
os.remove(path + '.zip')
def delete_object():
while True:
item = delete_queue.get()
mydata = threading.local()
mydata.object = item['object']
mydata.bucket = item['bucket']
with print_lock:
print("Thread : {} - Deleting %s from %s".format(threading.current_thread().name) % (mydata.object, mydata.bucket))
try:
delete = s3_resource.Object(bucket, mydata.object).delete()
except ClientError as e:
with print_lock:
print("Thread : {} - Unable to delete object %s on bucket %s: %s".format(threading.current_thread().name) % (mydata.object, mydata.bucket, e))
delete_queue.task_done()
if __name__ == '__main__':
args = parse_args()
archive_bucket = args.arch_bucket
bucket = args.bucket
prefix = args.prefix
years = args.years.split(",")
threads = args.threads
download_queue = Queue()
download_queue_dead = Queue()
delete_queue = Queue()
for i in range(threads):
t = threading.Thread(target=download_object)
t.daemon = True
t.start()
for i in range(threads):
t = threading.Thread(target=delete_object)
t.daemon = True
t.start()
compressor(archive_bucket, bucket, prefix, years)