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Forked from andrewschoen/S3 bucket sync
Created February 29, 2016 19:55
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Python script to sync an S3 bucket to the local file system
# -*- coding: utf-8 -*-
import os
import StringIO
import hashlib
try:
from boto.s3.connection import S3Connection
from boto.s3.key import Key
except ImportError:
raise ImproperlyConfigured, "Could not load Boto's S3 bindings."
ACCESS_KEY = ""
SECRET_KEY = ""
BUCKET = ""
FILE_ROOT = ""
def syncS3():
connection = S3Connection(ACCESS_KEY, SECRET_KEY)
bucket = connection.get_bucket(BUCKET)
s3_keys = bucket.list()
save_keys(s3_keys)
def save_keys(keys):
for key in keys:
key_string = str(key.key)
parent_folder = "\\".join(key_string.split("/")[0:2])
parent_folder = os.path.join(FILE_ROOT, parent_folder)
key_path = os.path.join(parent_folder, key_string.split("/")[-1])
if not os.path.exists(parent_folder):
os.makedirs(parent_folder)
if not os.path.exists(key_path):
save_to = open(key_path, "wb")
key.get_file(save_to)
save_to.close()
print "saved: %s" % key_path
else:
# etag holds the md5 for the key, wrapped in quotes
s3_md5 = key.etag.strip('"')
local_md5 = hashlib.md5(open(key_path, "rb").read()).hexdigest()
if s3_md5 == local_md5:
print "already exists, file the same: %s" % key_path
else:
save_to = open(key_path, "wb")
key.get_file(save_to)
save_to.close()
print "file changed, overwrote: %s" % key_path
if __name__ == "__main__":
syncS3()
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