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# -*- coding: utf-8 -*-
'''
Swift utility class
===================
Author: Anthony Stanton <anthony.stanton@gmail.com>
'''
from __future__ import absolute_import, unicode_literals, print_function
# Import python libs
import logging
import sys
from os import makedirs
from os.path import dirname, isdir
from errno import EEXIST
# Import Salt libs
import salt.utils.files
from salt.ext import six
# Get logging started
log = logging.getLogger(__name__)
# Import Swift client libs
HAS_SWIFT = False
try:
from swiftclient import client
HAS_SWIFT = True
except ImportError:
pass
def check_swift():
return HAS_SWIFT
def mkdirs(path):
try:
makedirs(path)
except OSError as err:
if err.errno != EEXIST:
raise
# we've been playing fast and loose with kwargs, but the swiftclient isn't
# going to accept any old thing
def _sanitize(kwargs):
variables = (
'user', 'key', 'authurl',
'retries', 'preauthurl', 'preauthtoken', 'snet',
'starting_backoff', 'max_backoff', 'tenant_name',
'os_options', 'auth_version', 'cacert',
'insecure', 'ssl_compression'
)
ret = {}
for var in kwargs:
if var in variables:
ret[var] = kwargs[var]
return ret
class SaltSwift(object):
'''
Class for all swiftclient functions
'''
def __init__(
self,
user,
tenant_name,
auth_url,
password=None,
auth_version=2,
**kwargs
):
'''
Set up openstack credentials
'''
if not HAS_SWIFT:
log.error('Error:: unable to find swiftclient. Try installing it from the appropriate repository.')
return None
self.kwargs = kwargs.copy()
self.kwargs['user'] = user
self.kwargs['password'] = password
self.kwargs['tenant_name'] = tenant_name
self.kwargs['authurl'] = auth_url
self.kwargs['auth_version'] = auth_version
if 'key' not in self.kwargs:
self.kwargs['key'] = password
self.kwargs = _sanitize(self.kwargs)
self.conn = client.Connection(**self.kwargs)
def get_account(self):
'''
List Swift containers
'''
try:
listing = self.conn.get_account()
return listing
except Exception as exc:
log.error('There was an error::')
if hasattr(exc, 'code') and hasattr(exc, 'msg'):
log.error(' Code: %s: %s', exc.code, exc.msg)
log.error(' Content: \n%s', getattr(exc, 'read', lambda: six.text_type(exc))())
return False
def get_container(self, cont):
'''
List files in a Swift container
'''
try:
listing = self.conn.get_container(cont)
return listing
except Exception as exc:
log.error('There was an error::')
if hasattr(exc, 'code') and hasattr(exc, 'msg'):
log.error(' Code: %s: %s', exc.code, exc.msg)
log.error(' Content: \n%s', getattr(exc, 'read', lambda: six.text_type(exc))())
return False
def put_container(self, cont):
'''
Create a new Swift container
'''
try:
self.conn.put_container(cont)
return True
except Exception as exc:
log.error('There was an error::')
if hasattr(exc, 'code') and hasattr(exc, 'msg'):
log.error(' Code: %s: %s', exc.code, exc.msg)
log.error(' Content: \n%s', getattr(exc, 'read', lambda: six.text_type(exc))())
return False
def delete_container(self, cont):
'''
Delete a Swift container
'''
try:
self.conn.delete_container(cont)
return True
except Exception as exc:
log.error('There was an error::')
if hasattr(exc, 'code') and hasattr(exc, 'msg'):
log.error(' Code: %s: %s', exc.code, exc.msg)
log.error(' Content: \n%s', getattr(exc, 'read', lambda: six.text_type(exc))())
return False
def post_container(self, cont, metadata=None):
'''
Update container metadata
'''
pass
def head_container(self, cont):
'''
Get container metadata
'''
pass
def get_object(self, cont, obj, local_file=None, return_bin=False):
'''
Retrieve a file from Swift
'''
try:
if local_file is None and return_bin is False:
return False
headers, body = self.conn.get_object(cont, obj, resp_chunk_size=65536)
if return_bin is True:
fp = sys.stdout
else:
dirpath = dirname(local_file)
if dirpath and not isdir(dirpath):
mkdirs(dirpath)
fp = salt.utils.files.fopen(local_file, 'wb') # pylint: disable=resource-leakage
read_length = 0
for chunk in body:
read_length += len(chunk)
fp.write(chunk)
fp.close()
return True
# ClientException
# file/dir exceptions
except Exception as exc:
log.error('There was an error::')
if hasattr(exc, 'code') and hasattr(exc, 'msg'):
log.error(' Code: %s: %s', exc.code, exc.msg)
log.error(' Content: \n%s', getattr(exc, 'read', lambda: six.text_type(exc))())
return False
def put_object(self, cont, obj, local_file):
'''
Upload a file to Swift
'''
try:
with salt.utils.files.fopen(local_file, 'rb') as fp_:
self.conn.put_object(cont, obj, fp_)
return True
except Exception as exc:
log.error('There was an error::')
if hasattr(exc, 'code') and hasattr(exc, 'msg'):
log.error(' Code: %s: %s', exc.code, exc.msg)
log.error(' Content: \n%s', getattr(exc, 'read', lambda: six.text_type(exc))())
return False
def delete_object(self, cont, obj):
'''
Delete a file from Swift
'''
try:
self.conn.delete_object(cont, obj)
return True
except Exception as exc:
log.error('There was an error::')
if hasattr(exc, 'code') and hasattr(exc, 'msg'):
log.error(' Code: %s: %s', exc.code, exc.msg)
log.error(' Content: \n%s', getattr(exc, 'read', lambda: six.text_type(exc))())
return False
def head_object(self, cont, obj):
'''
Get object metadata
'''
pass
def post_object(self, cont, obj, metadata):
'''
Update object metadata
'''
pass
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