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#!/usr/bin/python
from __future__ import print_function
from argparse import ArgumentParser
import base64
from datetime import datetime
import hashlib
import json
import mimetypes
import os
import subprocess
import sys
import urllib2
VERSION = '0.1.0'
USER_AGENT = "juju-cloud-sync/{} ({}) Python/{}".format(
VERSION, sys.platform, sys.version.split(None, 1)[0])
SSL_SIGN = """
echo -n "date:" {0} |
openssl dgst -sha256 -sign {1} |
openssl enc -e -a |
tr -d '\n'
"""
PUT = 'PUT'
class HeadRequest(urllib2.Request):
def get_method(self):
return "HEAD"
class PutRequest(urllib2.Request):
def get_method(self):
return PUT
class Client:
"""A class that mirrors MantaClient without the modern Crypto.
See https://github.com/joyent/python-manta
"""
def __init__(self, manta_url, account, key_id,
user_agent=USER_AGENT, verbose=False, dry_run=False):
self.manta_url = manta_url
self.account = account
self.key_id = key_id
self.user_agent = user_agent
self.dry_run = dry_run
def make_request_headers(self, headers=None):
"""Return a dict of required headers.
The Authorization header is always a signing of the "Date" header,
where "date" must be lowercase.
"""
timestamp = datetime.utcnow().strftime("%a, %d %b %Y %H:%M:%S GMT")
key_path = os.path.join(os.environ['JUJU_HOME'], 'id_rsa')
script = SSL_SIGN.format(timestamp, key_path)
signature = subprocess.check_output(['bash', '-c', script])
key = "/{}/keys/{}".format(self.account, self.key_id)
auth = (
'Signature keyId="{}",algorithm="rsa-sha256",'.format(key) +
'signature="{}"'.format(signature))
if headers is None:
headers = {}
headers['Date'] = timestamp
headers['Authorization'] = auth
headers["User-Agent"] = USER_AGENT
return headers
def _request(self, path, method="GET", body=None, headers=None):
headers = self.make_request_headers(headers)
container_url = "{}/{}".format(self.manta_url, path)
if method == 'HEAD':
request = HeadRequest(container_url, headers=headers)
elif method == PUT:
request = PutRequest(container_url, data=body, headers=headers)
else:
request = urllib2.Request(container_url, headers=headers)
try:
response = urllib2.urlopen(request)
except Exception as err:
print(request.header_items())
print(err.read())
raise
content = response.read()
headers = dict(response.headers.items())
headers['status'] = str(response.getcode())
headers['reason'] = response.msg
return headers, content
def ls(self, container_path):
"""Return a dict of a directory or file listing."""
files = {}
marker = ''
incomplete = True
while incomplete:
path_query = "{}?limit=256&marker={}".format(
container_path, marker)
last_marker = marker
headers, content = self._request(path_query)
for string in content.splitlines():
data = json.loads(string)
marker = data['name']
files[marker] = data
if last_marker == marker:
incomplete = False
return files
def put_object(self, remote_path, path=None,
content_type="application/octet-stream",
durability_level=None):
"""Put an object at te remote path."""
with open(path, mode='rb') as local_file:
content = local_file.read()
if not isinstance(content, bytes):
raise ValueError("'content' must be bytes, not unicode")
headers = {
"Content-Type": content_type,
}
if durability_level:
headers["x-durability-level"] = durability_level
headers["Content-Length"] = str(len(content))
headers["Content-MD5"] = get_md5content(path, content)
if self.dry_run:
return
response, content = self._request(
remote_path, method=PUT, body=content, headers=headers)
if response["status"] != "204":
raise Exception(content)
def mkdir(self, mdir, parents=False):
headers = {'Content-Type': 'application/json; type=directory'}
if self.dry_run:
return
response, content = self._request(mdir, PUT, headers=headers)
def get_md5content(local_path, content=None):
"""Return the base64 encoded md5 digest for the local file."""
if content is None:
with open(local_path, mode='rb') as local_file:
content = local_file.read()
md5 = hashlib.md5(content)
base64_md5 = base64.encodestring(md5.digest()).strip()
return base64_md5
def get_files(container_path, client):
try:
remote_files = client.ls(container_path)
except urllib2.HTTPError as e:
if e.code == 404:
return None
else:
raise
for file_name in remote_files:
file_path = "{0}/{1}".format(container_path, file_name)
for i in range(3):
response, content = client._request(file_path, "HEAD")
if response["status"] == "200":
break
else:
raise Exception(response)
remote_files[file_name].update(response)
return remote_files
def upload_changes(args, remote_files, container_path, client):
count = 0
if remote_files is None:
makedirs(container_path, client)
remote_files = {}
if args.verbose:
print("Thes container has: {}".format(remote_files.keys()))
for file_name in args.files:
remote_path = "{0}/{1}".format(
container_path, file_name).replace('//', '/')
remote_file = remote_files.get(file_name)
if remote_file is None:
if args.verbose:
print("File is new: {0}".format(remote_path))
else:
remote_hash = str(remote_file['content-md5'])
local_hash = get_md5content(file_name)
if remote_hash == local_hash:
if args.verbose:
print("File is same: {0}".format(remote_path))
continue
else:
if args.verbose:
print("File is different: {0}".format(remote_path))
print(" {0} != {1}".format(local_hash, remote_hash))
count += 1
print("Uploading {0}".format(remote_path))
content_type = (
mimetypes.guess_type(file_name)[0] or "application/octet-stream")
client.put_object(
remote_path, path=file_name, content_type=content_type)
print('Uploaded {0} files'.format(count))
def main():
parser = ArgumentParser('Sync changed and new files.')
parser.add_argument(
"-d", "--dry-run", action="store_true", default=False,
help="Do not make changes")
parser.add_argument(
'-v', '--verbose', action="store_true", help='Increse verbosity.')
parser.add_argument(
"-u", "--url", dest="manta_url",
help="Manta URL. Environment: MANTA_URL=URL",
default=os.environ.get("MANTA_URL"))
parser.add_argument(
"-a", "--account",
help="Manta account. Environment: MANTA_USER=ACCOUNT",
default=os.environ.get("MANTA_USER"))
parser.add_argument(
"-k", "--key-id", dest="key_id",
help="SSH key fingerprint. Environment: MANTA_KEY_ID=FINGERPRINT",
default=os.environ.get("MANTA_KEY_ID"))
parser.add_argument(
'--container', default='juju-dist', help='The container name.')
parser.add_argument('path', help='The destination path in the container.')
parser.add_argument(
'files', nargs='*', help='The files to send to the container.')
args = parser.parse_args()
if not args.manta_url:
print('MANTA_URL must be sourced into the environment.')
sys.exit(1)
client = Client(
args.manta_url, args.account, args.key_id,
verbose=args.verbose, dry_run=args.dry_run)
# /cpcjoyentsupport/public/juju-dist/tools/streams/v1/
container_path = '/{0}/public/{1}/{2}'.format(
args.account, args.container, args.path).replace('//', '/')
if args.verbose:
print(container_path)
sync(args, container_path, client)
def sync(args, container_path, client):
remote_files = get_files(container_path, client)
upload_changes(args, remote_files, container_path, client)
def makedirs(path, client):
"""Ensure a directory and its parents exist.
On Manta, creating an already-extant directory is not an error, so just
create them all.
"""
# Don't use os.path.split, because these are Manta paths, not local paths.
segments = path.split('/')
full_path = '/'.join(segments[0:2])
for segment in segments[2:]:
full_path = '/'.join([full_path, segment])
client.mkdir(full_path)
if __name__ == '__main__':
main()
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