Files
python-swiftclient/swiftclient/client.py
2026-02-24 21:11:36 +00:00

2005 lines
80 KiB
Python

# Copyright (c) 2010-2012 OpenStack, LLC.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
OpenStack Swift client library used internally
"""
import socket
import re
import logging
from urllib3.exceptions import HTTPError as urllib_http_error
import warnings
from requests.exceptions import RequestException, SSLError
import http.client as http_client
from requests.structures import CaseInsensitiveDict
from urllib.parse import quote, unquote
from urllib.parse import urljoin, urlparse, urlunparse
from time import sleep, time
from swiftclient import version as swiftclient_version
from swiftclient.exceptions import ClientException
from swiftclient.requests_compat import SwiftClientRequestsSession
from swiftclient.utils import (
iter_wrapper, LengthWrapper, ReadableToIterable, parse_api_response,
get_body)
# Default is 100, increase to 256
http_client._MAXHEADERS = 256
VERSIONFUL_AUTH_PATH = re.compile(r'v[2-3](?:\.0)?$')
AUTH_VERSIONS_V1 = ('1.0', '1', 1)
AUTH_VERSIONS_V2 = ('2.0', '2', 2)
AUTH_VERSIONS_V3 = ('3.0', '3', 3)
USER_METADATA_TYPE = tuple('x-%s-meta-' % type_ for type_ in
('container', 'account', 'object'))
URI_PATTERN_INFO = re.compile(r'/info')
URI_PATTERN_VERSION = re.compile(r'\/v\d+\.?\d*(\/.*)?')
ksexceptions = ksclient_v2 = ksclient_v3 = ksa_v3 = None
try:
from keystoneclient import exceptions as ksexceptions
# prevent keystoneclient warning us that it has no log handlers
logging.getLogger('keystoneclient').addHandler(logging.NullHandler())
from keystoneclient.v2_0 import client as ksclient_v2
except ImportError:
pass
try:
from keystoneclient.v3 import client as ksclient_v3
from keystoneauth1.identity import v3 as ksa_v3
from keystoneauth1 import session as ksa_session
from keystoneauth1 import exceptions as ksauthexceptions
except ImportError:
pass
logger = logging.getLogger("swiftclient")
logger.addHandler(logging.NullHandler())
#: Default behaviour is to redact header values known to contain secrets,
#: such as ``X-Auth-Key`` and ``X-Auth-Token``. Up to the first 16 chars
#: may be revealed.
#:
#: To disable, set the value of ``redact_sensitive_headers`` to ``False``.
#:
#: When header redaction is enabled, ``reveal_sensitive_prefix`` configures the
#: maximum length of any sensitive header data sent to the logs. If the header
#: is less than twice this length, only ``int(len(value)/2)`` chars will be
#: logged; if it is less than 15 chars long, even less will be logged.
logger_settings = {
'redact_sensitive_headers': True,
'reveal_sensitive_prefix': 16
}
#: A list of sensitive headers to redact in logs. Note that when extending this
#: list, the header names must be added in all lower case.
LOGGER_SENSITIVE_HEADERS = [
'x-auth-token', 'x-auth-key', 'x-service-token', 'x-storage-token',
'x-account-meta-temp-url-key', 'x-account-meta-temp-url-key-2',
'x-container-meta-temp-url-key', 'x-container-meta-temp-url-key-2',
'set-cookie'
]
def safe_value(name, value):
"""
Only show up to logger_settings['reveal_sensitive_prefix'] characters
from a sensitive header.
:param name: Header name
:param value: Header value
:return: Safe header value
"""
if name.lower() in LOGGER_SENSITIVE_HEADERS:
prefix_length = logger_settings.get('reveal_sensitive_prefix', 16)
prefix_length = int(
min(prefix_length, (len(value) ** 2) / 32, len(value) / 2)
)
redacted_value = value[0:prefix_length]
return redacted_value + '...'
return value
def scrub_headers(headers):
"""
Redact header values that can contain sensitive information that
should not be logged.
:param headers: Either a dict or an iterable of two-element tuples
:return: Safe dictionary of headers with sensitive information removed
"""
if isinstance(headers, dict):
headers = headers.items()
headers = [
(parse_header_string(key), parse_header_string(val))
for (key, val) in headers
]
if not logger_settings.get('redact_sensitive_headers', True):
return dict(headers)
if logger_settings.get('reveal_sensitive_prefix', 16) < 0:
logger_settings['reveal_sensitive_prefix'] = 16
return {key: safe_value(key, val) for (key, val) in headers}
def http_log(args, kwargs, resp, body):
if not logger.isEnabledFor(logging.INFO):
return
# create and log equivalent curl command
string_parts = ['curl -i']
for element in args:
if element == 'HEAD':
string_parts.append(' -I')
elif element in ('GET', 'POST', 'PUT'):
string_parts.append(' -X %s' % element)
else:
string_parts.append(' %s' % parse_header_string(element))
if 'headers' in kwargs:
headers = scrub_headers(kwargs['headers'])
for element in headers:
header = ' -H "%s: %s"' % (element, headers[element])
string_parts.append(header)
# log response as debug if good, or info if error
if resp.status < 300:
log_method = logger.debug
else:
log_method = logger.info
log_method("REQ: %s", "".join(string_parts))
log_method("RESP STATUS: %s %s", resp.status, resp.reason)
log_method("RESP HEADERS: %s", scrub_headers(resp.getheaders()))
if body:
resp_headers = resp_header_dict(resp)
nbody = get_body(resp_headers, body)
log_method("RESP BODY: %s", nbody)
def parse_header_string(data):
if not isinstance(data, (str, bytes)):
data = str(data)
if isinstance(data, bytes):
# Under Python3 requests only returns text_type and tosses (!) the
# rest of the headers. If that ever changes, this should be a sane
# approach.
try:
data = data.decode('ascii')
except UnicodeDecodeError:
data = quote(data)
try:
unquoted = unquote(data, errors='strict')
except UnicodeDecodeError:
return data
return unquoted
def encode_utf8(value):
if type(value) in (int, float, bool):
# As of requests 2.11.0, headers must be byte- or unicode-strings.
# Convert some known-good types as a convenience for developers.
# Note that we *don't* convert subclasses, as they may have overriddden
# __str__ or __repr__.
# See https://github.com/kennethreitz/requests/pull/3366 for more info
value = str(value)
if isinstance(value, str):
value = value.encode('utf8')
return value
def encode_meta_headers(headers):
"""Only encode metadata headers keys"""
ret = {}
for header, value in headers.items():
value = encode_utf8(value)
header = header.lower()
if (isinstance(header, str) and
header.startswith(USER_METADATA_TYPE)):
header = encode_utf8(header)
ret[header] = value
return ret
class LowerKeyCaseInsensitiveDict(CaseInsensitiveDict):
"""
CaseInsensitiveDict returning lower case keys for items()
"""
def __iter__(self):
return iter(self._store.keys())
class _ObjectBody:
"""
Readable and iterable object body response wrapper.
"""
def __init__(self, resp, chunk_size, conn_to_close):
"""
Wrap the underlying response
:param resp: the response to wrap
:param chunk_size: number of bytes to return each iteration/next call
"""
self.resp = resp
self.chunk_size = chunk_size
self.conn_to_close = conn_to_close
def read(self, length=None):
buf = self.resp.read(length)
if length != 0 and not buf:
self.close()
return buf
def __iter__(self):
return self
def next(self):
buf = self.read(self.chunk_size)
if not buf:
raise StopIteration()
return buf
def __next__(self):
return self.next()
def close(self):
self.resp.close()
if self.conn_to_close:
self.conn_to_close.close()
class _RetryBody(_ObjectBody):
"""
Wrapper for object body response which triggers a retry
(from offset) if the connection is dropped after partially
downloading the object.
"""
def __init__(self, resp, connection, container, obj,
resp_chunk_size=None, query_string=None, response_dict=None,
headers=None):
"""
Wrap the underlying response
:param resp: the response to wrap
:param connection: Connection class instance
:param container: the name of the container the object is in
:param obj: the name of object we are downloading
:param resp_chunk_size: if defined, chunk size of data to read
:param query_string: if set will be appended with '?' to generated path
:param response_dict: an optional dictionary into which to place
the response - status, reason and headers
:param headers: an optional dictionary with additional headers to
include in the request
"""
super(_RetryBody, self).__init__(resp, resp_chunk_size, None)
self.expected_length = int(self.resp.getheader('Content-Length'))
self.conn = connection
self.container = container
self.obj = obj
self.query_string = query_string
self.response_dict = response_dict
self.headers = dict(headers) if headers is not None else {}
self.bytes_read = 0
def read(self, length=None):
buf = None
try:
buf = self.resp.read(length)
self.bytes_read += len(buf)
except (socket.error, urllib_http_error, RequestException):
if self.conn.attempts > self.conn.retries:
raise
if (not buf and self.bytes_read < self.expected_length and
self.conn.attempts <= self.conn.retries):
self.headers['Range'] = 'bytes=%d-' % self.bytes_read
self.headers['If-Match'] = self.resp.getheader('ETag')
hdrs, body = self.conn._retry(None, get_object,
self.container, self.obj,
resp_chunk_size=self.chunk_size,
query_string=self.query_string,
response_dict=self.response_dict,
headers=self.headers,
attempts=self.conn.attempts)
expected_range = 'bytes %d-%d/%d' % (
self.bytes_read,
self.expected_length - 1,
self.expected_length)
if 'content-range' not in hdrs:
# Server didn't respond with partial content; manually seek
logger.warning('Received 200 while retrying %s/%s; seeking...',
self.container, self.obj)
to_read = self.bytes_read
while to_read > 0:
buf = body.resp.read(min(to_read, self.chunk_size))
to_read -= len(buf)
elif hdrs['content-range'] != expected_range:
msg = ('Expected range "%s" while retrying %s/%s '
'but got "%s"' % (expected_range, self.container,
self.obj, hdrs['content-range']))
raise ClientException(msg)
self.resp = body.resp
buf = self.read(length)
return buf
class HTTPConnection:
def __init__(self, url, proxy=None, cacert=None, insecure=False,
cert=None, cert_key=None, ssl_compression=False,
default_user_agent=None, timeout=None):
"""
Make an HTTPConnection or HTTPSConnection
:param url: url to connect to
:param proxy: proxy to connect through, if any; None by default; str
of the format 'http://127.0.0.1:8888' to set one
:param cacert: A CA bundle file to use in verifying a TLS server
certificate.
:param insecure: Allow to access servers without checking SSL certs.
The server's certificate will not be verified.
:param cert: Client certificate file to connect on SSL server
requiring SSL client certificate.
:param cert_key: Client certificate private key file.
:param ssl_compression: SSL compression should be disabled by default
and this setting is not usable as of now. The
parameter is kept for backward compatibility.
:param default_user_agent: Set the User-Agent header on every request.
If set to None (default), the user agent
will be "python-swiftclient-<version>". This
may be overridden on a per-request basis by
explicitly setting the user-agent header on
a call to request().
:param timeout: socket read timeout value, passed directly to
the requests library.
:raises ClientException: Unable to handle protocol scheme
"""
self.url = url
self.parsed_url = urlparse(url)
self.host = self.parsed_url.netloc
self.port = self.parsed_url.port
self.requests_args = {}
self.request_session = SwiftClientRequestsSession()
# Don't use requests's default headers
self.request_session.headers = None
self.resp = None
if self.parsed_url.scheme not in ('http', 'https'):
raise ClientException('Unsupported scheme "%s" in url "%s"'
% (self.parsed_url.scheme, url))
self.requests_args['verify'] = not insecure
if cacert and not insecure:
# verify requests parameter is used to pass the CA_BUNDLE file
# see: http://docs.python-requests.org/en/latest/user/advanced/
self.requests_args['verify'] = cacert
if cert:
# NOTE(cbrandily): cert requests parameter is used to pass client
# cert path or a tuple with client certificate/key paths.
if cert_key:
self.requests_args['cert'] = cert, cert_key
else:
self.requests_args['cert'] = cert
if proxy:
proxy_parsed = urlparse(proxy)
if not proxy_parsed.scheme:
raise ClientException("Proxy's missing scheme")
self.requests_args['proxies'] = {
proxy_parsed.scheme: '%s://%s' % (
proxy_parsed.scheme, proxy_parsed.netloc
)
}
self.requests_args['stream'] = True
if default_user_agent is None:
default_user_agent = \
'python-swiftclient-%s' % swiftclient_version.version_string
self.default_user_agent = default_user_agent
if timeout:
self.requests_args['timeout'] = timeout
def _request(self, *arg, **kwarg):
"""Final wrapper before requests call, to be patched in tests"""
return self.request_session.request(*arg, **kwarg)
def request(self, method, full_path, data=None, headers=None, files=None):
"""Encode url and header, then call requests.request"""
if headers is None:
headers = {}
else:
headers = encode_meta_headers(headers)
# set a default User-Agent header if it wasn't passed in
if 'user-agent' not in headers:
headers['user-agent'] = self.default_user_agent
url = "%s://%s%s" % (
self.parsed_url.scheme,
self.parsed_url.netloc,
full_path)
self.resp = self._request(method, url, headers=headers, data=data,
files=files, **self.requests_args)
return self.resp
def putrequest(self, full_path, data=None, headers=None, files=None):
"""
Use python-requests files upload
:param data: Use data generator for chunked-transfer
:param files: Use files for default transfer
"""
return self.request('PUT', full_path, data, headers, files)
def getresponse(self):
"""Adapt requests response to httplib interface"""
self.resp.status = self.resp.status_code
old_getheader = self.resp.headers.get
def _decode_header(string):
if string is None:
return string
return string.encode('iso-8859-1').decode('utf-8')
def _encode_header(string):
if string is None:
return string
return string.encode('utf-8').decode('iso-8859-1')
def getheaders():
return [(_decode_header(k), _decode_header(v))
for k, v in self.resp.headers.items()]
def getheader(k, v=None):
return _decode_header(old_getheader(
_encode_header(k.lower()), _encode_header(v)))
def releasing_read(*args, **kwargs):
chunk = self.resp.raw.read(*args, **kwargs)
if not chunk:
# NOTE(sigmavirus24): Release the connection back to the
# urllib3's connection pool. This will reduce the number of
# log messages seen in bug #1341777. This does not actually
# close a socket. It will also prevent people from being
# misled as to the cause of a bug as in bug #1424732.
self.resp.close()
return chunk
self.resp.getheaders = getheaders
self.resp.getheader = getheader
self.resp.read = releasing_read
return self.resp
def close(self):
if self.resp:
self.resp.close()
self.request_session.close()
def http_connection(*arg, **kwarg):
""":returns: tuple of (parsed url, connection object)"""
conn = HTTPConnection(*arg, **kwarg)
return conn.parsed_url, conn
def get_auth_1_0(url, user, key, **kwargs):
cacert = kwargs.get('cacert', None)
insecure = kwargs.get('insecure', False)
cert = kwargs.get('cert')
cert_key = kwargs.get('cert_key')
timeout = kwargs.get('timeout', None)
parsed, conn = http_connection(url, cacert=cacert, insecure=insecure,
cert=cert, cert_key=cert_key,
timeout=timeout)
method = 'GET'
headers = {'X-Auth-User': user, 'X-Auth-Key': key}
conn.request(method, parsed.path, '', headers)
resp = conn.getresponse()
body = resp.read()
resp.close()
conn.close()
http_log((url, method,), headers, resp, body)
url = resp.getheader('x-storage-url')
# There is a side-effect on current Rackspace 1.0 server where a
# bad URL would get you that document page and a 200. We error out
# if we don't have a x-storage-url header and if we get a body.
if resp.status < 200 or resp.status >= 300 or (body and not url):
raise ClientException.from_response(resp, 'Auth GET failed', body)
token = resp.getheader('x-storage-token', resp.getheader('x-auth-token'))
return url, token
def get_keystoneclient_2_0(auth_url, user, key, os_options, **kwargs):
# this function is only here to preserve the historic 'public'
# interface of this module
kwargs.update({'auth_version': '2.0'})
return get_auth_keystone(auth_url, user, key, os_options, **kwargs)
def get_auth_keystone(auth_url, user, key, os_options, **kwargs):
"""
Authenticate against a keystone server.
We are using the keystoneclient library for authentication.
"""
insecure = kwargs.get('insecure', False)
timeout = kwargs.get('timeout', None)
auth_version = kwargs.get('auth_version', None)
debug = logger.isEnabledFor(logging.DEBUG)
# Add the version suffix in case of versionless Keystone endpoints. If
# auth_version is also unset it is likely that it is v3
if not VERSIONFUL_AUTH_PATH.match(
urlparse(auth_url).path.rstrip('/').rsplit('/', 1)[-1]):
# Normalize auth_url to end in a slash because urljoin
auth_url = auth_url.rstrip('/') + '/'
if auth_version and auth_version in AUTH_VERSIONS_V2:
auth_url = urljoin(auth_url, "v2.0")
else:
auth_url = urljoin(auth_url, "v3")
auth_version = '3'
logger.debug("Versionless auth_url - using %s as endpoint" % auth_url)
# Legacy default if not set
if auth_version is None:
auth_version = '2'
ksclient = None
if auth_version in AUTH_VERSIONS_V3:
if ksclient_v3 is not None:
ksclient = ksclient_v3
else:
if ksclient_v2 is not None:
ksclient = ksclient_v2
if ksclient is None:
raise ClientException('''
Auth versions 2.0 and 3 require python-keystoneclient, install it or use Auth
version 1.0 which requires ST_AUTH, ST_USER, and ST_KEY environment
variables to be set or overridden with -A, -U, or -K.''')
filter_kwargs = {}
service_type = os_options.get('service_type') or 'object-store'
endpoint_type = os_options.get('endpoint_type') or 'public'
if os_options.get('region_name'):
filter_kwargs['attr'] = 'region'
filter_kwargs['filter_value'] = os_options['region_name']
if os_options.get('auth_type') and os_options['auth_type'] not in (
'password', 'v2password', 'v3password',
'v3applicationcredential'):
raise ClientException(
'Swiftclient currently only supports v3applicationcredential '
'for auth_type')
elif os_options.get('auth_type') == 'v3applicationcredential':
if ksa_v3 is None:
raise ClientException('Auth v3applicationcredential requires '
'keystoneauth1 package; consider upgrading '
'to python-keystoneclient>=2.0.0')
try:
auth = ksa_v3.ApplicationCredential(
auth_url=auth_url,
application_credential_secret=os_options.get(
'application_credential_secret'),
application_credential_id=os_options.get(
'application_credential_id'))
sess = ksa_session.Session(auth=auth, timeout=timeout)
token = sess.get_token()
except ksauthexceptions.Unauthorized:
msg = 'Unauthorized. Check application credential id and secret.'
raise ClientException(msg)
except ksauthexceptions.AuthorizationFailure as err:
raise ClientException('Authorization Failure. %s' % err)
try:
endpoint = sess.get_endpoint_data(service_type=service_type,
endpoint_type=endpoint_type,
**filter_kwargs)
return endpoint.catalog_url, token
except ksauthexceptions.EndpointNotFound:
raise ClientException(
'Endpoint for %s not found - '
'have you specified a region?' % service_type)
try:
_ksclient = ksclient.Client(
username=user,
password=key,
token=os_options.get('auth_token'),
tenant_name=os_options.get('tenant_name'),
tenant_id=os_options.get('tenant_id'),
user_id=os_options.get('user_id'),
user_domain_name=os_options.get('user_domain_name'),
user_domain_id=os_options.get('user_domain_id'),
project_name=os_options.get('project_name'),
project_id=os_options.get('project_id'),
project_domain_name=os_options.get('project_domain_name'),
project_domain_id=os_options.get('project_domain_id'),
debug=debug,
cacert=kwargs.get('cacert'),
cert=kwargs.get('cert'),
key=kwargs.get('cert_key'),
auth_url=auth_url, insecure=insecure, timeout=timeout)
except ksexceptions.Unauthorized:
msg = 'Unauthorized. Check username, password and tenant name/id.'
if auth_version in AUTH_VERSIONS_V3:
msg = ('Unauthorized. Check username/id, password, '
'tenant name/id and user/tenant domain name/id.')
raise ClientException(msg)
except ksexceptions.AuthorizationFailure as err:
raise ClientException('Authorization Failure. %s' % err)
try:
endpoint = _ksclient.service_catalog.url_for(
service_type=service_type,
endpoint_type=endpoint_type,
**filter_kwargs)
except ksexceptions.EndpointNotFound:
raise ClientException('Endpoint for %s not found - '
'have you specified a region?' % service_type)
return endpoint, _ksclient.auth_token
def get_auth(auth_url, user, key, **kwargs):
"""
Get authentication/authorization credentials.
:kwarg auth_version: the api version of the supplied auth params
:kwarg os_options: a dict, the openstack identity service options
:returns: a tuple, (storage_url, token)
N.B. if the optional os_options parameter includes a non-empty
'object_storage_url' key it will override the default storage url returned
by the auth service.
"""
session = kwargs.get('session', None)
auth_version = kwargs.get('auth_version', '1')
os_options = kwargs.get('os_options', {})
cacert = kwargs.get('cacert', None)
insecure = kwargs.get('insecure', False)
cert = kwargs.get('cert')
cert_key = kwargs.get('cert_key')
timeout = kwargs.get('timeout', None)
if session:
service_type = os_options.get('service_type', 'object-store')
interface = os_options.get('endpoint_type', 'public')
region_name = os_options.get('region_name')
storage_url = session.get_endpoint(service_type=service_type,
interface=interface,
region_name=region_name)
token = session.get_token()
elif auth_version in AUTH_VERSIONS_V1:
storage_url, token = get_auth_1_0(auth_url,
user,
key,
cacert=cacert,
insecure=insecure,
cert=cert,
cert_key=cert_key,
timeout=timeout)
elif auth_version in AUTH_VERSIONS_V2 + AUTH_VERSIONS_V3:
# We are handling a special use case here where the user argument
# specifies both the user name and tenant name in the form tenant:user
if user and not kwargs.get('tenant_name') and ':' in user:
os_options['tenant_name'], user = user.split(':')
# We are allowing to have a tenant_name argument in get_auth
# directly without having os_options
if kwargs.get('tenant_name'):
os_options['tenant_name'] = kwargs['tenant_name']
if os_options.get('auth_type') == 'v3applicationcredential':
pass
elif not (os_options.get('tenant_name') or
os_options.get('tenant_id') or
os_options.get('project_name') or
os_options.get('project_id')):
if auth_version in AUTH_VERSIONS_V2:
raise ClientException('No tenant specified')
raise ClientException('No project name or project id specified.')
storage_url, token = get_auth_keystone(auth_url, user,
key, os_options,
cacert=cacert,
insecure=insecure,
cert=cert,
cert_key=cert_key,
timeout=timeout,
auth_version=auth_version)
else:
raise ClientException('Unknown auth_version %s specified and no '
'session found.' % auth_version)
# Override storage url, if necessary
if os_options.get('object_storage_url'):
return os_options['object_storage_url'], token
else:
return storage_url, token
def resp_header_dict(resp):
resp_headers = LowerKeyCaseInsensitiveDict()
for header, value in resp.getheaders():
header = parse_header_string(header)
resp_headers[header] = parse_header_string(value)
return resp_headers
def store_response(resp, response_dict):
"""
store information about an operation into a dict
:param resp: an http response object containing the response
headers
:param response_dict: a dict into which are placed the
status, reason and a dict of lower-cased headers
"""
if response_dict is not None:
response_dict['status'] = resp.status
response_dict['reason'] = resp.reason
response_dict['headers'] = resp_header_dict(resp)
def get_account(url, token, marker=None, limit=None, prefix=None,
end_marker=None, http_conn=None, full_listing=False,
service_token=None, headers=None, delimiter=None):
"""
Get a listing of containers for the account.
:param url: storage URL
:param token: auth token
:param marker: marker query
:param limit: limit query
:param prefix: prefix query
:param end_marker: end_marker query
:param http_conn: a tuple of (parsed url, HTTPConnection object),
(If None, it will create the conn object)
:param full_listing: if True, return a full listing, else returns a max
of 10000 listings
:param service_token: service auth token
:param headers: additional headers to include in the request
:param delimiter: delimiter query
:returns: a tuple of (response headers, a list of containers) The response
headers will be a dict and all header names will be lowercase.
:raises ClientException: HTTP GET request failed
"""
req_headers = {'X-Auth-Token': token, 'Accept-Encoding': 'gzip'}
if service_token:
req_headers['X-Service-Token'] = service_token
if headers:
req_headers.update(headers)
close_conn = False
if not http_conn:
http_conn = http_connection(url)
close_conn = True
if full_listing:
rv = get_account(url, token, marker, limit, prefix, end_marker,
http_conn, headers=req_headers, delimiter=delimiter)
listing = rv[1]
while listing:
marker = listing[-1]['name']
listing = get_account(url, token, marker, limit, prefix,
end_marker, http_conn, headers=req_headers,
delimiter=delimiter)[1]
if listing:
rv[1].extend(listing)
return rv
parsed, conn = http_conn
qs = 'format=json'
if marker:
qs += '&marker=%s' % quote(marker)
if limit:
qs += '&limit=%d' % limit
if prefix:
qs += '&prefix=%s' % quote(prefix)
if delimiter:
qs += '&delimiter=%s' % quote(delimiter)
if end_marker:
qs += '&end_marker=%s' % quote(end_marker)
full_path = '%s?%s' % (parsed.path, qs)
method = 'GET'
conn.request(method, full_path, '', req_headers)
resp = conn.getresponse()
body = resp.read()
if close_conn:
conn.close()
http_log(("%s?%s" % (url, qs), method,), {'headers': req_headers},
resp, body)
resp_headers = resp_header_dict(resp)
if resp.status < 200 or resp.status >= 300:
raise ClientException.from_response(resp, 'Account GET failed', body)
if resp.status == 204:
return resp_headers, []
return resp_headers, parse_api_response(resp_headers, body)
def head_account(url, token, http_conn=None, headers=None,
service_token=None):
"""
Get account stats.
:param url: storage URL
:param token: auth token
:param http_conn: a tuple of (parsed url, HTTPConnection object),
(If None, it will create the conn object)
:param headers: additional headers to include in the request
:param service_token: service auth token
:returns: a dict containing the response's headers (all header names will
be lowercase)
:raises ClientException: HTTP HEAD request failed
"""
close_conn = False
if http_conn:
parsed, conn = http_conn
else:
parsed, conn = http_connection(url)
close_conn = True
method = "HEAD"
req_headers = {'X-Auth-Token': token}
if service_token:
req_headers['X-Service-Token'] = service_token
if headers:
req_headers.update(headers)
conn.request(method, parsed.path, '', req_headers)
resp = conn.getresponse()
body = resp.read()
if close_conn:
conn.close()
http_log((url, method,), {'headers': req_headers}, resp, body)
if resp.status < 200 or resp.status >= 300:
raise ClientException.from_response(resp, 'Account HEAD failed', body)
resp_headers = resp_header_dict(resp)
return resp_headers
def post_account(url, token, headers, http_conn=None, response_dict=None,
service_token=None, query_string=None, data=None):
"""
Update an account's metadata.
:param url: storage URL
:param token: auth token
:param headers: additional headers to include in the request
:param http_conn: a tuple of (parsed url, HTTPConnection object),
(If None, it will create the conn object)
:param response_dict: an optional dictionary into which to place
the response - status, reason and headers
:param service_token: service auth token
:param query_string: if set will be appended with '?' to generated path
:param data: an optional message body for the request
:raises ClientException: HTTP POST request failed
:returns: resp_headers, body
"""
close_conn = False
if http_conn:
parsed, conn = http_conn
else:
parsed, conn = http_connection(url)
close_conn = True
method = 'POST'
path = parsed.path
if query_string:
path += '?' + query_string
req_headers = {'X-Auth-Token': token}
if service_token:
req_headers['X-Service-Token'] = service_token
if headers:
req_headers.update(headers)
conn.request(method, path, data, req_headers)
resp = conn.getresponse()
body = resp.read()
if close_conn:
conn.close()
http_log((url, method,), {'headers': req_headers}, resp, body)
store_response(resp, response_dict)
if resp.status < 200 or resp.status >= 300:
raise ClientException.from_response(resp, 'Account POST failed', body)
resp_headers = {}
for header, value in resp.getheaders():
resp_headers[header.lower()] = value
return resp_headers, body
def get_container(url, token, container, marker=None, limit=None,
prefix=None, delimiter=None, end_marker=None,
version_marker=None, path=None, http_conn=None,
full_listing=False, service_token=None, headers=None,
query_string=None):
"""
Get a listing of objects for the container.
:param url: storage URL
:param token: auth token
:param container: container name to get a listing for
:param marker: marker query
:param limit: limit query
:param prefix: prefix query
:param delimiter: string to delimit the queries on
:param end_marker: marker query
:param version_marker: version marker query
:param path: path query (equivalent: "delimiter=/" and "prefix=path/")
:param http_conn: a tuple of (parsed url, HTTPConnection object),
(If None, it will create the conn object)
:param full_listing: if True, return a full listing, else returns a max
of 10000 listings
:param service_token: service auth token
:param headers: additional headers to include in the request
:param query_string: if set will be appended with '?' to generated path
:returns: a tuple of (response headers, a list of objects) The response
headers will be a dict and all header names will be lowercase.
:raises ClientException: HTTP GET request failed
"""
close_conn = False
if not http_conn:
http_conn = http_connection(url)
close_conn = True
if full_listing:
rv = get_container(url, token, container, marker, limit, prefix,
delimiter, end_marker, version_marker, path=path,
http_conn=http_conn, service_token=service_token,
headers=headers)
listing = rv[1]
while listing:
if not delimiter:
marker = listing[-1]['name']
else:
marker = listing[-1].get('name', listing[-1].get('subdir'))
version_marker = listing[-1].get('version_id')
listing = get_container(url, token, container, marker, limit,
prefix, delimiter, end_marker,
version_marker, path, http_conn,
service_token=service_token,
headers=headers)[1]
if listing:
rv[1].extend(listing)
return rv
parsed, conn = http_conn
cont_path = '%s/%s' % (parsed.path, quote(container))
qs = 'format=json'
if marker:
qs += '&marker=%s' % quote(marker)
if limit:
qs += '&limit=%d' % limit
if prefix:
qs += '&prefix=%s' % quote(prefix)
if delimiter:
qs += '&delimiter=%s' % quote(delimiter)
if end_marker:
qs += '&end_marker=%s' % quote(end_marker)
if version_marker:
qs += '&version_marker=%s' % quote(version_marker)
if path:
qs += '&path=%s' % quote(path)
if query_string:
qs += '&%s' % query_string.lstrip('?')
req_headers = {'X-Auth-Token': token, 'Accept-Encoding': 'gzip'}
if service_token:
req_headers['X-Service-Token'] = service_token
if headers:
req_headers.update(headers)
method = 'GET'
conn.request(method, '%s?%s' % (cont_path, qs), '', req_headers)
resp = conn.getresponse()
body = resp.read()
if close_conn:
conn.close()
http_log(('%(url)s%(cont_path)s?%(qs)s' %
{'url': url.replace(parsed.path, ''),
'cont_path': cont_path,
'qs': qs}, method,),
{'headers': req_headers}, resp, body)
if resp.status < 200 or resp.status >= 300:
raise ClientException.from_response(resp, 'Container GET failed', body)
resp_headers = resp_header_dict(resp)
if resp.status == 204:
return resp_headers, []
return resp_headers, parse_api_response(resp_headers, body)
def head_container(url, token, container, http_conn=None, headers=None,
service_token=None):
"""
Get container stats.
:param url: storage URL
:param token: auth token
:param container: container name to get stats for
:param http_conn: a tuple of (parsed url, HTTPConnection object),
(If None, it will create the conn object)
:param headers: additional headers to include in the request
:param service_token: service auth token
:returns: a dict containing the response's headers (all header names will
be lowercase)
:raises ClientException: HTTP HEAD request failed
"""
close_conn = False
if http_conn:
parsed, conn = http_conn
else:
parsed, conn = http_connection(url)
close_conn = True
path = '%s/%s' % (parsed.path, quote(container))
method = 'HEAD'
req_headers = {'X-Auth-Token': token}
if service_token:
req_headers['X-Service-Token'] = service_token
if headers:
req_headers.update(headers)
conn.request(method, path, '', req_headers)
resp = conn.getresponse()
body = resp.read()
if close_conn:
conn.close()
http_log(('%s%s' % (url.replace(parsed.path, ''), path), method,),
{'headers': req_headers}, resp, body)
if resp.status < 200 or resp.status >= 300:
raise ClientException.from_response(
resp, 'Container HEAD failed', body)
resp_headers = resp_header_dict(resp)
return resp_headers
def put_container(url, token, container, headers=None, http_conn=None,
response_dict=None, service_token=None, query_string=None):
"""
Create a container
:param url: storage URL
:param token: auth token
:param container: container name to create
:param headers: additional headers to include in the request
:param http_conn: a tuple of (parsed url, HTTPConnection object),
(If None, it will create the conn object)
:param response_dict: an optional dictionary into which to place
the response - status, reason and headers
:param service_token: service auth token
:param query_string: if set will be appended with '?' to generated path
:raises ClientException: HTTP PUT request failed
"""
close_conn = False
if http_conn:
parsed, conn = http_conn
else:
parsed, conn = http_connection(url)
close_conn = True
path = '%s/%s' % (parsed.path, quote(container))
method = 'PUT'
req_headers = {'X-Auth-Token': token}
if service_token:
req_headers['X-Service-Token'] = service_token
if headers:
req_headers.update(headers)
if 'content-length' not in (k.lower() for k in req_headers):
req_headers['Content-Length'] = '0'
if query_string:
path += '?' + query_string.lstrip('?')
conn.request(method, path, '', req_headers)
resp = conn.getresponse()
body = resp.read()
if close_conn:
conn.close()
store_response(resp, response_dict)
http_log(('%s%s' % (url.replace(parsed.path, ''), path), method,),
{'headers': req_headers}, resp, body)
if resp.status < 200 or resp.status >= 300:
raise ClientException.from_response(resp, 'Container PUT failed', body)
def post_container(url, token, container, headers, http_conn=None,
response_dict=None, service_token=None):
"""
Update a container's metadata.
:param url: storage URL
:param token: auth token
:param container: container name to update
:param headers: additional headers to include in the request
:param http_conn: a tuple of (parsed url, HTTPConnection object),
(If None, it will create the conn object)
:param response_dict: an optional dictionary into which to place
the response - status, reason and headers
:param service_token: service auth token
:raises ClientException: HTTP POST request failed
"""
close_conn = False
if http_conn:
parsed, conn = http_conn
else:
parsed, conn = http_connection(url)
close_conn = True
path = '%s/%s' % (parsed.path, quote(container))
method = 'POST'
req_headers = {'X-Auth-Token': token}
if service_token:
req_headers['X-Service-Token'] = service_token
if headers:
req_headers.update(headers)
if 'content-length' not in (k.lower() for k in headers):
req_headers['Content-Length'] = '0'
conn.request(method, path, '', req_headers)
resp = conn.getresponse()
body = resp.read()
if close_conn:
conn.close()
http_log(('%s%s' % (url.replace(parsed.path, ''), path), method,),
{'headers': req_headers}, resp, body)
store_response(resp, response_dict)
if resp.status < 200 or resp.status >= 300:
raise ClientException.from_response(
resp, 'Container POST failed', body)
def delete_container(url, token, container, http_conn=None,
response_dict=None, service_token=None,
query_string=None, headers=None):
"""
Delete a container
:param url: storage URL
:param token: auth token
:param container: container name to delete
:param http_conn: a tuple of (parsed url, HTTPConnection object),
(If None, it will create the conn object)
:param response_dict: an optional dictionary into which to place
the response - status, reason and headers
:param service_token: service auth token
:param query_string: if set will be appended with '?' to generated path
:param headers: additional headers to include in the request
:raises ClientException: HTTP DELETE request failed
"""
close_conn = False
if http_conn:
parsed, conn = http_conn
else:
parsed, conn = http_connection(url)
close_conn = True
path = '%s/%s' % (parsed.path, quote(container))
if headers:
headers = dict(headers)
else:
headers = {}
headers['X-Auth-Token'] = token
if service_token:
headers['X-Service-Token'] = service_token
if query_string:
path += '?' + query_string.lstrip('?')
method = 'DELETE'
conn.request(method, path, '', headers)
resp = conn.getresponse()
body = resp.read()
if close_conn:
conn.close()
http_log(('%s%s' % (url.replace(parsed.path, ''), path), method,),
{'headers': headers}, resp, body)
store_response(resp, response_dict)
if resp.status < 200 or resp.status >= 300:
raise ClientException.from_response(
resp, 'Container DELETE failed', body)
def get_object(url, token, container, name, http_conn=None,
resp_chunk_size=None, query_string=None,
response_dict=None, headers=None, service_token=None):
"""
Get an object
:param url: storage URL
:param token: auth token
:param container: container name that the object is in
:param name: object name to get
:param http_conn: a tuple of (parsed url, HTTPConnection object),
(If None, it will create the conn object and close it
after all content is read)
:param resp_chunk_size: if defined, chunk size of data to read. NOTE: If
you specify a resp_chunk_size you must fully read
the object's contents before making another
request.
:param query_string: if set will be appended with '?' to generated path
:param response_dict: an optional dictionary into which to place
the response - status, reason and headers
:param headers: an optional dictionary with additional headers to include
in the request
:param service_token: service auth token
:returns: a tuple of (response headers, the object's contents) The response
headers will be a dict and all header names will be lowercase.
:raises ClientException: HTTP GET request failed
"""
close_conn = False
if http_conn:
parsed, conn = http_conn
else:
parsed, conn = http_connection(url)
close_conn = True
path = '%s/%s/%s' % (parsed.path, quote(container), quote(name))
if query_string:
path += '?' + query_string
method = 'GET'
headers = headers.copy() if headers else {}
headers['X-Auth-Token'] = token
if service_token:
headers['X-Service-Token'] = service_token
conn.request(method, path, '', headers)
resp = conn.getresponse()
parsed_response = {}
store_response(resp, parsed_response)
if response_dict is not None:
response_dict.update(parsed_response)
if resp.status < 200 or resp.status >= 300:
body = resp.read()
http_log(('%s%s' % (url.replace(parsed.path, ''), path), method,),
{'headers': headers}, resp, body)
raise ClientException.from_response(resp, 'Object GET failed', body)
if resp_chunk_size:
object_body = _ObjectBody(resp, resp_chunk_size,
conn_to_close=conn if close_conn else None)
else:
object_body = resp.read()
if close_conn:
conn.close()
http_log(('%s%s' % (url.replace(parsed.path, ''), path), method,),
{'headers': headers}, resp, None)
return parsed_response['headers'], object_body
def head_object(url, token, container, name, http_conn=None,
service_token=None, headers=None, query_string=None):
"""
Get object info
:param url: storage URL
:param token: auth token
:param container: container name that the object is in
:param name: object name to get info for
:param http_conn: a tuple of (parsed url, HTTPConnection object),
(If None, it will create the conn object)
:param service_token: service auth token
:param headers: additional headers to include in the request
:returns: a dict containing the response's headers (all header names will
be lowercase)
:raises ClientException: HTTP HEAD request failed
"""
close_conn = False
if http_conn:
parsed, conn = http_conn
else:
parsed, conn = http_connection(url)
close_conn = True
path = '%s/%s/%s' % (parsed.path, quote(container), quote(name))
if query_string:
path += '?' + query_string
if headers:
headers = dict(headers)
else:
headers = {}
headers['X-Auth-Token'] = token
method = 'HEAD'
if service_token:
headers['X-Service-Token'] = service_token
conn.request(method, path, '', headers)
resp = conn.getresponse()
body = resp.read()
if close_conn:
conn.close()
http_log(('%s%s' % (url.replace(parsed.path, ''), path), method,),
{'headers': headers}, resp, body)
if resp.status < 200 or resp.status >= 300:
raise ClientException.from_response(resp, 'Object HEAD failed', body)
resp_headers = resp_header_dict(resp)
return resp_headers
def put_object(url, token=None, container=None, name=None, contents=None,
content_length=None, etag=None, chunk_size=None,
content_type=None, headers=None, http_conn=None, proxy=None,
query_string=None, response_dict=None, service_token=None):
"""
Put an object
:param url: storage URL
:param token: auth token; if None, no token will be sent
:param container: container name that the object is in; if None, the
container name is expected to be part of the url
:param name: object name to put; if None, the object name is expected to be
part of the url
:param contents: a string, a file-like object or an iterable
to read object data from;
if None, a zero-byte put will be done
:param content_length: value to send as content-length header; also limits
the amount read from contents; if None, it will be
computed via the contents or chunked transfer
encoding will be used
:param etag: etag of contents; if None, no etag will be sent
:param chunk_size: chunk size of data to write; it defaults to 65536;
used only if the contents object has a 'read'
method, e.g. file-like objects, ignored otherwise
:param content_type: value to send as content-type header, overriding any
value included in the headers param; if None and no
value is found in the headers param, an empty string
value will be sent
:param headers: additional headers to include in the request, if any
:param http_conn: a tuple of (parsed url, HTTPConnection object),
(If None, it will create the conn object)
:param proxy: proxy to connect through, if any; None by default; str of the
format 'http://127.0.0.1:8888' to set one
:param query_string: if set will be appended with '?' to generated path
:param response_dict: an optional dictionary into which to place
the response - status, reason and headers
:param service_token: service auth token
:returns: etag
:raises ClientException: HTTP PUT request failed
"""
close_conn = False
if http_conn:
parsed, conn = http_conn
else:
parsed, conn = http_connection(url, proxy=proxy)
close_conn = True
path = parsed.path
if container:
path = '%s/%s' % (path.rstrip('/'), quote(container))
if name:
path = '%s/%s' % (path.rstrip('/'), quote(name))
if query_string:
path += '?' + query_string
if headers:
headers = dict(headers)
else:
headers = {}
if token:
headers['X-Auth-Token'] = token
if service_token:
headers['X-Service-Token'] = service_token
if etag:
headers['ETag'] = etag.strip('"')
if content_length is not None:
headers['Content-Length'] = str(content_length)
else:
for n, v in headers.items():
if n.lower() == 'content-length':
content_length = int(v)
if content_type is not None:
headers['Content-Type'] = content_type
if not contents:
headers['Content-Length'] = '0'
if isinstance(contents, (ReadableToIterable, LengthWrapper)):
conn.putrequest(path, headers=headers, data=contents)
elif hasattr(contents, 'read'):
if chunk_size is None:
chunk_size = 65536
if content_length is None:
data = ReadableToIterable(contents, chunk_size, md5=False)
else:
data = LengthWrapper(contents, content_length, md5=False)
conn.putrequest(path, headers=headers, data=data)
else:
if chunk_size is not None:
warn_msg = ('%s object has no "read" method, ignoring chunk_size'
% type(contents).__name__)
warnings.warn(warn_msg, stacklevel=2)
# Match requests's is_stream test
if hasattr(contents, '__iter__') and not isinstance(contents, (
str, bytes, list, tuple, dict)):
contents = iter_wrapper(contents)
conn.request('PUT', path, contents, headers)
resp = conn.getresponse()
body = resp.read()
if close_conn:
conn.close()
http_log(('%s%s' % (url.replace(parsed.path, ''), path), 'PUT',),
{'headers': headers}, resp, body)
store_response(resp, response_dict)
if resp.status < 200 or resp.status >= 300:
raise ClientException.from_response(resp, 'Object PUT failed', body)
etag = resp.getheader('etag', '').strip('"')
return etag
def post_object(url, token, container, name, headers, http_conn=None,
response_dict=None, service_token=None):
"""
Update object metadata
:param url: storage URL
:param token: auth token
:param container: container name that the object is in
:param name: name of the object to update
:param headers: additional headers to include in the request
:param http_conn: a tuple of (parsed url, HTTPConnection object),
(If None, it will create the conn object)
:param response_dict: an optional dictionary into which to place
the response - status, reason and headers
:param service_token: service auth token
:raises ClientException: HTTP POST request failed
"""
close_conn = False
if http_conn:
parsed, conn = http_conn
else:
parsed, conn = http_connection(url)
close_conn = True
path = '%s/%s/%s' % (parsed.path, quote(container), quote(name))
req_headers = {'X-Auth-Token': token}
if service_token:
req_headers['X-Service-Token'] = service_token
if headers:
req_headers.update(headers)
conn.request('POST', path, '', req_headers)
resp = conn.getresponse()
body = resp.read()
if close_conn:
conn.close()
http_log(('%s%s' % (url.replace(parsed.path, ''), path), 'POST',),
{'headers': req_headers}, resp, body)
store_response(resp, response_dict)
if resp.status < 200 or resp.status >= 300:
raise ClientException.from_response(resp, 'Object POST failed', body)
def copy_object(url, token, container, name, destination=None,
headers=None, fresh_metadata=None, http_conn=None,
response_dict=None, service_token=None):
"""
Copy object
:param url: storage URL
:param token: auth token; if None, no token will be sent
:param container: container name that the source object is in
:param name: source object name
:param destination: The container and object name of the destination object
in the form of /container/object; if None, the copy
will use the source as the destination.
:param headers: additional headers to include in the request
:param fresh_metadata: Enables object creation that omits existing user
metadata, default None
:param http_conn: HTTP connection object (If None, it will create the
conn object)
:param response_dict: an optional dictionary into which to place
the response - status, reason and headers
:param service_token: service auth token
:raises ClientException: HTTP COPY request failed
"""
close_conn = False
if http_conn:
parsed, conn = http_conn
else:
parsed, conn = http_connection(url)
close_conn = True
path = parsed.path
container = quote(container)
name = quote(name)
path = '%s/%s/%s' % (path.rstrip('/'), container, name)
headers = dict(headers) if headers else {}
if destination is not None:
headers['Destination'] = quote(destination)
elif container and name:
headers['Destination'] = '/%s/%s' % (container, name)
if token is not None:
headers['X-Auth-Token'] = token
if service_token is not None:
headers['X-Service-Token'] = service_token
if fresh_metadata is not None:
# remove potential fresh metadata headers
for fresh_hdr in [hdr for hdr in headers.keys()
if hdr.lower() == 'x-fresh-metadata']:
headers.pop(fresh_hdr)
headers['X-Fresh-Metadata'] = 'true' if fresh_metadata else 'false'
conn.request('COPY', path, '', headers)
resp = conn.getresponse()
body = resp.read()
if close_conn:
conn.close()
http_log(('%s%s' % (url.replace(parsed.path, ''), path), 'COPY',),
{'headers': headers}, resp, body)
store_response(resp, response_dict)
if resp.status < 200 or resp.status >= 300:
raise ClientException.from_response(resp, 'Object COPY failed', body)
def delete_object(url, token=None, container=None, name=None, http_conn=None,
headers=None, proxy=None, query_string=None,
response_dict=None, service_token=None):
"""
Delete object
:param url: storage URL
:param token: auth token; if None, no token will be sent
:param container: container name that the object is in; if None, the
container name is expected to be part of the url
:param name: object name to delete; if None, the object name is expected to
be part of the url
:param http_conn: a tuple of (parsed url, HTTPConnection object),
(If None, it will create the conn object)
:param headers: additional headers to include in the request
:param proxy: proxy to connect through, if any; None by default; str of the
format 'http://127.0.0.1:8888' to set one
:param query_string: if set will be appended with '?' to generated path
:param response_dict: an optional dictionary into which to place
the response - status, reason and headers
:param service_token: service auth token
:raises ClientException: HTTP DELETE request failed
"""
close_conn = False
if http_conn:
parsed, conn = http_conn
else:
parsed, conn = http_connection(url, proxy=proxy)
close_conn = True
path = parsed.path
if container:
path = '%s/%s' % (path.rstrip('/'), quote(container))
if name:
path = '%s/%s' % (path.rstrip('/'), quote(name))
if query_string:
path += '?' + query_string
if headers:
headers = dict(headers)
else:
headers = {}
if token:
headers['X-Auth-Token'] = token
if service_token:
headers['X-Service-Token'] = service_token
conn.request('DELETE', path, '', headers)
resp = conn.getresponse()
body = resp.read()
if close_conn:
conn.close()
http_log(('%s%s' % (url.replace(parsed.path, ''), path), 'DELETE',),
{'headers': headers}, resp, body)
store_response(resp, response_dict)
if resp.status < 200 or resp.status >= 300:
raise ClientException.from_response(resp, 'Object DELETE failed', body)
def get_capabilities(http_conn):
"""
Get cluster capability infos.
:param http_conn: a tuple of (parsed url, HTTPConnection object)
:returns: a dict containing the cluster capabilities
:raises ClientException: HTTP Capabilities GET failed
"""
parsed, conn = http_conn
headers = {'Accept-Encoding': 'gzip'}
conn.request('GET', parsed.path, '', headers)
resp = conn.getresponse()
body = resp.read()
http_log((parsed.geturl(), 'GET',), {'headers': headers}, resp, body)
if resp.status < 200 or resp.status >= 300:
raise ClientException.from_response(
resp, 'Capabilities GET failed', body)
resp_headers = resp_header_dict(resp)
return parse_api_response(resp_headers, body)
class Connection:
"""
Convenience class to make requests that will also retry the request
Requests will have an X-Auth-Token header whose value is either
the preauthtoken or a token obtained from the auth service using
the user credentials provided as args to the constructor. If
os_options includes a service_username then requests will also have
an X-Service-Token header whose value is a token obtained from the
auth service using the service credentials. In this case the request
url will be set to the storage_url obtained from the auth service
for the service user, unless this is overridden by a preauthurl.
"""
def __init__(self, authurl=None, user=None, key=None, retries=5,
preauthurl=None, preauthtoken=None,
starting_backoff=1, max_backoff=64, tenant_name=None,
os_options=None, auth_version="1", cacert=None,
insecure=False, cert=None, cert_key=None,
ssl_compression=True, retry_on_ratelimit=True,
timeout=None, session=None, force_auth_retry=False):
"""
:param authurl: authentication URL
:param user: user name to authenticate as
:param key: key/password to authenticate with
:param retries: Number of times to retry the request before failing
:param preauthurl: storage URL (if you have already authenticated)
:param preauthtoken: authentication token (if you have already
authenticated) note authurl/user/key/tenant_name
are not required when specifying preauthtoken
:param starting_backoff: initial delay between retries (seconds)
:param max_backoff: maximum delay between retries (seconds)
:param auth_version: OpenStack auth version, default is 1.0
:param tenant_name: The tenant/account name, required when connecting
to an auth 2.0 system.
:param os_options: The OpenStack options which can have tenant_id,
auth_token, service_type, endpoint_type,
tenant_name, object_storage_url, region_name,
service_username, service_project_name, service_key
:param insecure: Allow to access servers without checking SSL certs.
The server's certificate will not be verified.
:param cert: Client certificate file to connect on SSL server
requiring SSL client certificate.
:param cert_key: Client certificate private key file.
:param ssl_compression: Whether to enable compression at the SSL layer.
If set to 'False' and the pyOpenSSL library is
present an attempt to disable SSL compression
will be made. This may provide a performance
increase for https upload/download operations.
:param retry_on_ratelimit: by default, a ratelimited connection will
retry after a backoff. Setting this
parameter to False will cause an exception
to be raised to the caller.
:param timeout: The connect timeout for the HTTP connection.
:param session: A keystoneauth session object.
:param force_auth_retry: reset auth info even if client got unexpected
error except 401 Unauthorized.
"""
self.session = session
self.authurl = authurl
self.user = user
self.key = key
self.retries = retries
self.http_conn = None
self.attempts = 0
self.starting_backoff = starting_backoff
self.max_backoff = max_backoff
self.auth_version = auth_version
self.os_options = dict(os_options or {})
if tenant_name:
self.os_options['tenant_name'] = tenant_name
if preauthurl:
self.os_options['object_storage_url'] = preauthurl
self.url = preauthurl or self.os_options.get('object_storage_url')
self.token = preauthtoken or self.os_options.get('auth_token')
if self.os_options.get('service_username', None):
self.service_auth = True
else:
self.service_auth = False
self.service_token = None
self.cacert = cacert
self.insecure = insecure
self.cert = cert
self.cert_key = cert_key
self.ssl_compression = ssl_compression
self.auth_end_time = 0
self.retry_on_ratelimit = retry_on_ratelimit
self.timeout = timeout
self.force_auth_retry = force_auth_retry
def close(self):
if (self.http_conn and isinstance(self.http_conn, tuple) and
len(self.http_conn) > 1):
conn = self.http_conn[1]
conn.close()
self.http_conn = None
def get_auth(self):
self.url, self.token = get_auth(self.authurl, self.user, self.key,
session=self.session,
auth_version=self.auth_version,
os_options=self.os_options,
cacert=self.cacert,
insecure=self.insecure,
cert=self.cert,
cert_key=self.cert_key,
timeout=self.timeout)
return self.url, self.token
def get_service_auth(self):
opts = self.os_options
service_options = {}
service_options['tenant_name'] = opts.get('service_project_name', None)
service_options['region_name'] = opts.get('region_name', None)
service_options['object_storage_url'] = opts.get('object_storage_url',
None)
service_user = opts.get('service_username', None)
service_key = opts.get('service_key', None)
return get_auth(self.authurl, service_user, service_key,
session=self.session,
auth_version=self.auth_version,
os_options=service_options,
cacert=self.cacert,
insecure=self.insecure,
timeout=self.timeout)
def http_connection(self, url=None):
return http_connection(url if url else self.url,
cacert=self.cacert,
insecure=self.insecure,
cert=self.cert,
cert_key=self.cert_key,
ssl_compression=self.ssl_compression,
timeout=self.timeout)
def _add_response_dict(self, target_dict, kwargs):
if target_dict is not None and 'response_dict' in kwargs:
response_dict = kwargs['response_dict']
if 'response_dicts' in target_dict:
target_dict['response_dicts'].append(response_dict)
else:
target_dict['response_dicts'] = [response_dict]
target_dict.update(response_dict)
def _retry(self, reset_func, func, *args, **kwargs):
retried_auth = False
backoff = self.starting_backoff
caller_response_dict = kwargs.pop('response_dict', None)
self.attempts = kwargs.pop('attempts', 0)
while self.attempts <= self.retries or retried_auth:
self.attempts += 1
try:
if not self.url or not self.token:
self.url, self.token = self.get_auth()
self.close()
if self.service_auth and not self.service_token:
self.url, self.service_token = self.get_service_auth()
self.close()
self.auth_end_time = time()
if not self.http_conn:
self.http_conn = self.http_connection()
kwargs['http_conn'] = self.http_conn
if caller_response_dict is not None:
kwargs['response_dict'] = {}
rv = func(self.url, self.token, *args,
service_token=self.service_token, **kwargs)
self._add_response_dict(caller_response_dict, kwargs)
return rv
except SSLError as e:
self._add_response_dict(caller_response_dict, kwargs)
if ('certificate verify' in str(e)) or \
('hostname' in str(e)) or \
self.attempts > self.retries:
raise
self.http_conn = None
except (socket.error, RequestException):
self._add_response_dict(caller_response_dict, kwargs)
if self.attempts > self.retries:
raise
self.http_conn = None
except ClientException as err:
self._add_response_dict(caller_response_dict, kwargs)
if err.http_status == 401:
if self.session:
should_retry = self.session.invalidate()
else:
# Without a proper session, just check for auth creds
should_retry = all((self.authurl, self.user, self.key))
self.url = self.token = self.service_token = None
if retried_auth or not should_retry:
raise
retried_auth = True
elif self.attempts > self.retries or err.http_status is None:
raise
elif err.http_status in (408, 499):
# Server hit a timeout, so HTTP request/response framing
# are likely in a bad state; trash the connection
self.http_conn = None
elif 500 <= err.http_status <= 599:
pass
elif self.retry_on_ratelimit and err.http_status in (498, 429):
pass
else:
raise
if self.force_auth_retry:
self.url = self.token = self.service_token = None
sleep(backoff)
backoff = min(backoff * 2, self.max_backoff)
if reset_func:
reset_func(func, *args, **kwargs)
def head_account(self, headers=None):
"""Wrapper for :func:`head_account`"""
return self._retry(None, head_account, headers=headers)
def get_account(self, marker=None, limit=None, prefix=None,
end_marker=None, full_listing=False, headers=None,
delimiter=None):
"""Wrapper for :func:`get_account`"""
# TODO(unknown): With full_listing=True this will restart the entire
# listing with each retry. Need to make a better version that just
# retries where it left off.
return self._retry(None, get_account, marker=marker, limit=limit,
prefix=prefix, end_marker=end_marker,
full_listing=full_listing, headers=headers,
delimiter=delimiter)
def post_account(self, headers, response_dict=None,
query_string=None, data=None):
"""Wrapper for :func:`post_account`"""
return self._retry(None, post_account, headers,
query_string=query_string, data=data,
response_dict=response_dict)
def head_container(self, container, headers=None):
"""Wrapper for :func:`head_container`"""
return self._retry(None, head_container, container, headers=headers)
def get_container(self, container, marker=None, limit=None, prefix=None,
delimiter=None, end_marker=None, version_marker=None,
path=None, full_listing=False, headers=None,
query_string=None):
"""Wrapper for :func:`get_container`"""
# TODO(unknown): With full_listing=True this will restart the entire
# listing with each retry. Need to make a better version that just
# retries where it left off.
return self._retry(None, get_container, container, marker=marker,
limit=limit, prefix=prefix, delimiter=delimiter,
end_marker=end_marker,
version_marker=version_marker, path=path,
full_listing=full_listing, headers=headers,
query_string=query_string)
def put_container(self, container, headers=None, response_dict=None,
query_string=None):
"""Wrapper for :func:`put_container`"""
return self._retry(None, put_container, container, headers=headers,
response_dict=response_dict,
query_string=query_string)
def post_container(self, container, headers, response_dict=None):
"""Wrapper for :func:`post_container`"""
return self._retry(None, post_container, container, headers,
response_dict=response_dict)
def delete_container(self, container, response_dict=None,
query_string=None, headers={}):
"""Wrapper for :func:`delete_container`"""
return self._retry(None, delete_container, container,
response_dict=response_dict,
query_string=query_string,
headers=headers)
def head_object(self, container, obj, headers=None, query_string=None):
"""Wrapper for :func:`head_object`"""
return self._retry(None, head_object, container, obj, headers=headers,
query_string=query_string)
def get_object(self, container, obj, resp_chunk_size=None,
query_string=None, response_dict=None, headers=None):
"""Wrapper for :func:`get_object`"""
rheaders, body = self._retry(None, get_object, container, obj,
resp_chunk_size=resp_chunk_size,
query_string=query_string,
response_dict=response_dict,
headers=headers)
is_not_range_request = (
not headers or 'range' not in (k.lower() for k in headers))
retry_is_possible = (
is_not_range_request and resp_chunk_size and
self.attempts <= self.retries and
rheaders.get('transfer-encoding') is None)
if retry_is_possible:
body = _RetryBody(body.resp, self, container, obj,
resp_chunk_size=resp_chunk_size,
query_string=query_string,
response_dict=response_dict,
headers=headers)
return rheaders, body
def put_object(self, container, obj, contents, content_length=None,
etag=None, chunk_size=None, content_type=None,
headers=None, query_string=None, response_dict=None):
"""Wrapper for :func:`put_object`"""
def _default_reset(*args, **kwargs):
raise ClientException('put_object(%r, %r, ...) failure and no '
'ability to reset contents for reupload.'
% (container, obj))
if isinstance(contents, str) or not contents:
# if its a str or None then you can retry as much as you want
reset_func = None
else:
reset_func = _default_reset
if self.retries > 0:
tell = getattr(contents, 'tell', None)
seek = getattr(contents, 'seek', None)
reset = getattr(contents, 'reset', None)
if tell and seek:
orig_pos = tell()
def reset_func(*a, **kw):
seek(orig_pos)
elif reset:
reset_func = reset
return self._retry(reset_func, put_object, container, obj, contents,
content_length=content_length, etag=etag,
chunk_size=chunk_size, content_type=content_type,
headers=headers, query_string=query_string,
response_dict=response_dict)
def post_object(self, container, obj, headers, response_dict=None):
"""Wrapper for :func:`post_object`"""
return self._retry(None, post_object, container, obj, headers,
response_dict=response_dict)
def copy_object(self, container, obj, destination=None, headers=None,
fresh_metadata=None, response_dict=None):
"""Wrapper for :func:`copy_object`"""
return self._retry(None, copy_object, container, obj, destination,
headers, fresh_metadata,
response_dict=response_dict)
def delete_object(self, container, obj, query_string=None,
response_dict=None, headers=None):
"""Wrapper for :func:`delete_object`"""
return self._retry(None, delete_object, container, obj,
query_string=query_string,
response_dict=response_dict,
headers=headers)
def _map_url(self, url):
url = url or self.url
if not url:
url, _ = self.get_auth()
scheme, netloc, path, params, query, fragment = urlparse(url)
if URI_PATTERN_VERSION.search(path):
path = URI_PATTERN_VERSION.sub('/info', path)
elif not URI_PATTERN_INFO.search(path):
if path.endswith('/'):
path += 'info'
else:
path += '/info'
return urlunparse((scheme, netloc, path, params, query, fragment))
def get_capabilities(self, url=None):
parsed = urlparse(self._map_url(url))
if not self.http_conn:
self.http_conn = self.http_connection(url)
return get_capabilities((parsed, self.http_conn[1]))