49a9cc7e68
Fixed bug 969411 Ranged GET request checked wheter the object is large objects only when response is 416 Requested Range Not Satisfiable. All ranged GET requests should check the object is large object or not because size of the manifest file can be larger than 0. Change-Id: Ia3632252d6879a773be881149c10ce0f5ffbcd82
2062 lines
94 KiB
Python
2062 lines
94 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.
|
|
|
|
# NOTE: swift_conn
|
|
# You'll see swift_conn passed around a few places in this file. This is the
|
|
# source httplib connection of whatever it is attached to.
|
|
# It is used when early termination of reading from the connection should
|
|
# happen, such as when a range request is satisfied but there's still more the
|
|
# source connection would like to send. To prevent having to read all the data
|
|
# that could be left, the source connection can be .close() and then reads
|
|
# commence to empty out any buffers.
|
|
# These shenanigans are to ensure all related objects can be garbage
|
|
# collected. We've seen objects hang around forever otherwise.
|
|
|
|
from __future__ import with_statement
|
|
try:
|
|
import simplejson as json
|
|
except ImportError:
|
|
import json
|
|
import mimetypes
|
|
import os
|
|
import re
|
|
import time
|
|
import traceback
|
|
from ConfigParser import ConfigParser
|
|
from datetime import datetime
|
|
from urllib import unquote, quote
|
|
import uuid
|
|
import functools
|
|
from hashlib import md5
|
|
from random import shuffle
|
|
|
|
from eventlet import sleep, spawn_n, GreenPile, Timeout
|
|
from eventlet.queue import Queue, Empty, Full
|
|
from eventlet.timeout import Timeout
|
|
from webob.exc import HTTPAccepted, HTTPBadRequest, HTTPForbidden, \
|
|
HTTPMethodNotAllowed, HTTPNotFound, HTTPPreconditionFailed, \
|
|
HTTPRequestEntityTooLarge, HTTPRequestTimeout, HTTPServerError, \
|
|
HTTPServiceUnavailable, status_map
|
|
from webob import Request, Response
|
|
|
|
from swift.common.ring import Ring
|
|
from swift.common.utils import cache_from_env, ContextPool, get_logger, \
|
|
get_remote_client, normalize_timestamp, split_path, TRUE_VALUES, public
|
|
from swift.common.bufferedhttp import http_connect
|
|
from swift.common.constraints import check_metadata, check_object_creation, \
|
|
check_utf8, CONTAINER_LISTING_LIMIT, MAX_ACCOUNT_NAME_LENGTH, \
|
|
MAX_CONTAINER_NAME_LENGTH, MAX_FILE_SIZE
|
|
from swift.common.exceptions import ChunkReadTimeout, \
|
|
ChunkWriteTimeout, ConnectionTimeout, ListingIterNotFound, \
|
|
ListingIterNotAuthorized, ListingIterError
|
|
from swift.common.http import is_informational, is_success, is_redirection, \
|
|
is_client_error, is_server_error, HTTP_CONTINUE, HTTP_OK, HTTP_CREATED, \
|
|
HTTP_ACCEPTED, HTTP_PARTIAL_CONTENT, HTTP_MULTIPLE_CHOICES, \
|
|
HTTP_BAD_REQUEST, HTTP_NOT_FOUND, HTTP_REQUESTED_RANGE_NOT_SATISFIABLE, \
|
|
HTTP_INTERNAL_SERVER_ERROR, HTTP_SERVICE_UNAVAILABLE, \
|
|
HTTP_INSUFFICIENT_STORAGE, HTTPClientDisconnect
|
|
|
|
|
|
def update_headers(response, headers):
|
|
"""
|
|
Helper function to update headers in the response.
|
|
|
|
:param response: webob.Response object
|
|
:param headers: dictionary headers
|
|
"""
|
|
if hasattr(headers, 'items'):
|
|
headers = headers.items()
|
|
for name, value in headers:
|
|
if name == 'etag':
|
|
response.headers[name] = value.replace('"', '')
|
|
elif name not in ('date', 'content-length', 'content-type',
|
|
'connection', 'x-put-timestamp', 'x-delete-after'):
|
|
response.headers[name] = value
|
|
|
|
|
|
def delay_denial(func):
|
|
"""
|
|
Decorator to declare which methods should have any swift.authorize call
|
|
delayed. This is so the method can load the Request object up with
|
|
additional information that may be needed by the authorization system.
|
|
|
|
:param func: function for which authorization will be delayed
|
|
"""
|
|
func.delay_denial = True
|
|
|
|
@functools.wraps(func)
|
|
def wrapped(*a, **kw):
|
|
return func(*a, **kw)
|
|
return wrapped
|
|
|
|
|
|
def get_account_memcache_key(account):
|
|
return 'account/%s' % account
|
|
|
|
|
|
def get_container_memcache_key(account, container):
|
|
return 'container/%s/%s' % (account, container)
|
|
|
|
|
|
class SegmentedIterable(object):
|
|
"""
|
|
Iterable that returns the object contents for a segmented object in Swift.
|
|
|
|
If there's a failure that cuts the transfer short, the response's
|
|
`status_int` will be updated (again, just for logging since the original
|
|
status would have already been sent to the client).
|
|
|
|
:param controller: The ObjectController instance to work with.
|
|
:param container: The container the object segments are within.
|
|
:param listing: The listing of object segments to iterate over; this may
|
|
be an iterator or list that returns dicts with 'name' and
|
|
'bytes' keys.
|
|
:param response: The webob.Response this iterable is associated with, if
|
|
any (default: None)
|
|
"""
|
|
|
|
def __init__(self, controller, container, listing, response=None):
|
|
self.controller = controller
|
|
self.container = container
|
|
self.listing = iter(listing)
|
|
self.segment = -1
|
|
self.segment_dict = None
|
|
self.segment_peek = None
|
|
self.seek = 0
|
|
self.segment_iter = None
|
|
# See NOTE: swift_conn at top of file about this.
|
|
self.segment_iter_swift_conn = None
|
|
self.position = 0
|
|
self.response = response
|
|
if not self.response:
|
|
self.response = Response()
|
|
self.next_get_time = 0
|
|
|
|
def _load_next_segment(self):
|
|
"""
|
|
Loads the self.segment_iter with the next object segment's contents.
|
|
|
|
:raises: StopIteration when there are no more object segments.
|
|
"""
|
|
try:
|
|
self.segment += 1
|
|
self.segment_dict = self.segment_peek or self.listing.next()
|
|
self.segment_peek = None
|
|
partition, nodes = self.controller.app.object_ring.get_nodes(
|
|
self.controller.account_name, self.container,
|
|
self.segment_dict['name'])
|
|
path = '/%s/%s/%s' % (self.controller.account_name, self.container,
|
|
self.segment_dict['name'])
|
|
req = Request.blank(path)
|
|
if self.seek:
|
|
req.range = 'bytes=%s-' % self.seek
|
|
self.seek = 0
|
|
if self.segment > self.controller.app.rate_limit_after_segment:
|
|
sleep(max(self.next_get_time - time.time(), 0))
|
|
self.next_get_time = time.time() + \
|
|
1.0 / self.controller.app.rate_limit_segments_per_sec
|
|
shuffle(nodes)
|
|
resp = self.controller.GETorHEAD_base(req, _('Object'), partition,
|
|
self.controller.iter_nodes(partition, nodes,
|
|
self.controller.app.object_ring), path,
|
|
len(nodes))
|
|
if not is_success(resp.status_int):
|
|
raise Exception(_('Could not load object segment %(path)s:' \
|
|
' %(status)s') % {'path': path, 'status': resp.status_int})
|
|
self.segment_iter = resp.app_iter
|
|
# See NOTE: swift_conn at top of file about this.
|
|
self.segment_iter_swift_conn = getattr(resp, 'swift_conn', None)
|
|
except StopIteration:
|
|
raise
|
|
except (Exception, Timeout), err:
|
|
if not getattr(err, 'swift_logged', False):
|
|
self.controller.app.logger.exception(_('ERROR: While '
|
|
'processing manifest /%(acc)s/%(cont)s/%(obj)s'),
|
|
{'acc': self.controller.account_name,
|
|
'cont': self.controller.container_name,
|
|
'obj': self.controller.object_name})
|
|
err.swift_logged = True
|
|
self.response.status_int = HTTP_SERVICE_UNAVAILABLE
|
|
raise
|
|
|
|
def next(self):
|
|
return iter(self).next()
|
|
|
|
def __iter__(self):
|
|
""" Standard iterator function that returns the object's contents. """
|
|
try:
|
|
while True:
|
|
if not self.segment_iter:
|
|
self._load_next_segment()
|
|
while True:
|
|
with ChunkReadTimeout(self.controller.app.node_timeout):
|
|
try:
|
|
chunk = self.segment_iter.next()
|
|
break
|
|
except StopIteration:
|
|
self._load_next_segment()
|
|
self.position += len(chunk)
|
|
yield chunk
|
|
except StopIteration:
|
|
raise
|
|
except (Exception, Timeout), err:
|
|
if not getattr(err, 'swift_logged', False):
|
|
self.controller.app.logger.exception(_('ERROR: While '
|
|
'processing manifest /%(acc)s/%(cont)s/%(obj)s'),
|
|
{'acc': self.controller.account_name,
|
|
'cont': self.controller.container_name,
|
|
'obj': self.controller.object_name})
|
|
err.swift_logged = True
|
|
self.response.status_int = HTTP_SERVICE_UNAVAILABLE
|
|
raise
|
|
|
|
def app_iter_range(self, start, stop):
|
|
"""
|
|
Non-standard iterator function for use with Webob in serving Range
|
|
requests more quickly. This will skip over segments and do a range
|
|
request on the first segment to return data from, if needed.
|
|
|
|
:param start: The first byte (zero-based) to return. None for 0.
|
|
:param stop: The last byte (zero-based) to return. None for end.
|
|
"""
|
|
try:
|
|
if start:
|
|
self.segment_peek = self.listing.next()
|
|
while start >= self.position + self.segment_peek['bytes']:
|
|
self.segment += 1
|
|
self.position += self.segment_peek['bytes']
|
|
self.segment_peek = self.listing.next()
|
|
self.seek = start - self.position
|
|
else:
|
|
start = 0
|
|
if stop is not None:
|
|
length = stop - start
|
|
else:
|
|
length = None
|
|
for chunk in self:
|
|
if length is not None:
|
|
length -= len(chunk)
|
|
if length < 0:
|
|
# Chop off the extra:
|
|
yield chunk[:length]
|
|
break
|
|
yield chunk
|
|
# See NOTE: swift_conn at top of file about this.
|
|
if self.segment_iter_swift_conn:
|
|
try:
|
|
self.segment_iter_swift_conn.close()
|
|
except Exception:
|
|
pass
|
|
self.segment_iter_swift_conn = None
|
|
if self.segment_iter:
|
|
try:
|
|
while self.segment_iter.next():
|
|
pass
|
|
except Exception:
|
|
pass
|
|
self.segment_iter = None
|
|
except StopIteration:
|
|
raise
|
|
except (Exception, Timeout), err:
|
|
if not getattr(err, 'swift_logged', False):
|
|
self.controller.app.logger.exception(_('ERROR: While '
|
|
'processing manifest /%(acc)s/%(cont)s/%(obj)s'),
|
|
{'acc': self.controller.account_name,
|
|
'cont': self.controller.container_name,
|
|
'obj': self.controller.object_name})
|
|
err.swift_logged = True
|
|
self.response.status_int = HTTP_SERVICE_UNAVAILABLE
|
|
raise
|
|
|
|
|
|
class Controller(object):
|
|
"""Base WSGI controller class for the proxy"""
|
|
server_type = _('Base')
|
|
|
|
# Ensure these are all lowercase
|
|
pass_through_headers = []
|
|
|
|
def __init__(self, app):
|
|
self.account_name = None
|
|
self.app = app
|
|
self.trans_id = '-'
|
|
|
|
def transfer_headers(self, src_headers, dst_headers):
|
|
x_remove = 'x-remove-%s-meta-' % self.server_type.lower()
|
|
x_meta = 'x-%s-meta-' % self.server_type.lower()
|
|
dst_headers.update((k.lower().replace('-remove', '', 1), '')
|
|
for k in src_headers
|
|
if k.lower().startswith(x_remove))
|
|
dst_headers.update((k.lower(), v)
|
|
for k, v in src_headers.iteritems()
|
|
if k.lower() in self.pass_through_headers or
|
|
k.lower().startswith(x_meta))
|
|
|
|
def error_increment(self, node):
|
|
"""
|
|
Handles incrementing error counts when talking to nodes.
|
|
|
|
:param node: dictionary of node to increment the error count for
|
|
"""
|
|
node['errors'] = node.get('errors', 0) + 1
|
|
node['last_error'] = time.time()
|
|
|
|
def error_occurred(self, node, msg):
|
|
"""
|
|
Handle logging, and handling of errors.
|
|
|
|
:param node: dictionary of node to handle errors for
|
|
:param msg: error message
|
|
"""
|
|
self.error_increment(node)
|
|
self.app.logger.error(_('%(msg)s %(ip)s:%(port)s'),
|
|
{'msg': msg, 'ip': node['ip'], 'port': node['port']})
|
|
|
|
def exception_occurred(self, node, typ, additional_info):
|
|
"""
|
|
Handle logging of generic exceptions.
|
|
|
|
:param node: dictionary of node to log the error for
|
|
:param typ: server type
|
|
:param additional_info: additional information to log
|
|
"""
|
|
self.app.logger.exception(
|
|
_('ERROR with %(type)s server %(ip)s:%(port)s/%(device)s re: '
|
|
'%(info)s'),
|
|
{'type': typ, 'ip': node['ip'], 'port': node['port'],
|
|
'device': node['device'], 'info': additional_info})
|
|
|
|
def error_limited(self, node):
|
|
"""
|
|
Check if the node is currently error limited.
|
|
|
|
:param node: dictionary of node to check
|
|
:returns: True if error limited, False otherwise
|
|
"""
|
|
now = time.time()
|
|
if not 'errors' in node:
|
|
return False
|
|
if 'last_error' in node and node['last_error'] < \
|
|
now - self.app.error_suppression_interval:
|
|
del node['last_error']
|
|
if 'errors' in node:
|
|
del node['errors']
|
|
return False
|
|
limited = node['errors'] > self.app.error_suppression_limit
|
|
if limited:
|
|
self.app.logger.debug(
|
|
_('Node error limited %(ip)s:%(port)s (%(device)s)'), node)
|
|
return limited
|
|
|
|
def error_limit(self, node):
|
|
"""
|
|
Mark a node as error limited.
|
|
|
|
:param node: dictionary of node to error limit
|
|
"""
|
|
node['errors'] = self.app.error_suppression_limit + 1
|
|
node['last_error'] = time.time()
|
|
|
|
def account_info(self, account, autocreate=False):
|
|
"""
|
|
Get account information, and also verify that the account exists.
|
|
|
|
:param account: name of the account to get the info for
|
|
:returns: tuple of (account partition, account nodes, container_count)
|
|
or (None, None, None) if it does not exist
|
|
"""
|
|
partition, nodes = self.app.account_ring.get_nodes(account)
|
|
# 0 = no responses, 200 = found, 404 = not found, -1 = mixed responses
|
|
if self.app.memcache:
|
|
cache_key = get_account_memcache_key(account)
|
|
cache_value = self.app.memcache.get(cache_key)
|
|
if not isinstance(cache_value, dict):
|
|
result_code = cache_value
|
|
container_count = 0
|
|
else:
|
|
result_code = cache_value['status']
|
|
container_count = cache_value['container_count']
|
|
if result_code == HTTP_OK:
|
|
return partition, nodes, container_count
|
|
elif result_code == HTTP_NOT_FOUND and not autocreate:
|
|
return None, None, None
|
|
result_code = 0
|
|
container_count = 0
|
|
attempts_left = len(nodes)
|
|
path = '/%s' % account
|
|
headers = {'x-trans-id': self.trans_id, 'Connection': 'close'}
|
|
for node in self.iter_nodes(partition, nodes, self.app.account_ring):
|
|
try:
|
|
with ConnectionTimeout(self.app.conn_timeout):
|
|
conn = http_connect(node['ip'], node['port'],
|
|
node['device'], partition, 'HEAD', path, headers)
|
|
with Timeout(self.app.node_timeout):
|
|
resp = conn.getresponse()
|
|
body = resp.read()
|
|
if is_success(resp.status):
|
|
result_code = HTTP_OK
|
|
container_count = int(
|
|
resp.getheader('x-account-container-count') or 0)
|
|
break
|
|
elif resp.status == HTTP_NOT_FOUND:
|
|
if result_code == 0:
|
|
result_code = HTTP_NOT_FOUND
|
|
elif result_code != HTTP_NOT_FOUND:
|
|
result_code = -1
|
|
elif resp.status == HTTP_INSUFFICIENT_STORAGE:
|
|
self.error_limit(node)
|
|
continue
|
|
else:
|
|
result_code = -1
|
|
attempts_left -= 1
|
|
if attempts_left <= 0:
|
|
break
|
|
except (Exception, Timeout):
|
|
self.exception_occurred(node, _('Account'),
|
|
_('Trying to get account info for %s') % path)
|
|
if result_code == HTTP_NOT_FOUND and autocreate:
|
|
if len(account) > MAX_ACCOUNT_NAME_LENGTH:
|
|
return None, None, None
|
|
headers = {'X-Timestamp': normalize_timestamp(time.time()),
|
|
'X-Trans-Id': self.trans_id,
|
|
'Connection': 'close'}
|
|
resp = self.make_requests(Request.blank('/v1' + path),
|
|
self.app.account_ring, partition, 'PUT',
|
|
path, [headers] * len(nodes))
|
|
if not is_success(resp.status_int):
|
|
raise Exception('Could not autocreate account %r' % path)
|
|
result_code = HTTP_OK
|
|
if self.app.memcache and result_code in (HTTP_OK, HTTP_NOT_FOUND):
|
|
if result_code == HTTP_OK:
|
|
cache_timeout = self.app.recheck_account_existence
|
|
else:
|
|
cache_timeout = self.app.recheck_account_existence * 0.1
|
|
self.app.memcache.set(cache_key,
|
|
{'status': result_code, 'container_count': container_count},
|
|
timeout=cache_timeout)
|
|
if result_code == HTTP_OK:
|
|
return partition, nodes, container_count
|
|
return None, None, None
|
|
|
|
def container_info(self, account, container, account_autocreate=False):
|
|
"""
|
|
Get container information and thusly verify container existance.
|
|
This will also make a call to account_info to verify that the
|
|
account exists.
|
|
|
|
:param account: account name for the container
|
|
:param container: container name to look up
|
|
:returns: tuple of (container partition, container nodes, container
|
|
read acl, container write acl, container sync key) or (None,
|
|
None, None, None, None) if the container does not exist
|
|
"""
|
|
partition, nodes = self.app.container_ring.get_nodes(
|
|
account, container)
|
|
path = '/%s/%s' % (account, container)
|
|
if self.app.memcache:
|
|
cache_key = get_container_memcache_key(account, container)
|
|
cache_value = self.app.memcache.get(cache_key)
|
|
if isinstance(cache_value, dict):
|
|
status = cache_value['status']
|
|
read_acl = cache_value['read_acl']
|
|
write_acl = cache_value['write_acl']
|
|
sync_key = cache_value.get('sync_key')
|
|
versions = cache_value.get('versions')
|
|
if status == HTTP_OK:
|
|
return partition, nodes, read_acl, write_acl, sync_key, \
|
|
versions
|
|
elif status == HTTP_NOT_FOUND:
|
|
return None, None, None, None, None, None
|
|
if not self.account_info(account, autocreate=account_autocreate)[1]:
|
|
return None, None, None, None, None, None
|
|
result_code = 0
|
|
read_acl = None
|
|
write_acl = None
|
|
sync_key = None
|
|
container_size = None
|
|
versions = None
|
|
attempts_left = len(nodes)
|
|
headers = {'x-trans-id': self.trans_id, 'Connection': 'close'}
|
|
for node in self.iter_nodes(partition, nodes, self.app.container_ring):
|
|
try:
|
|
with ConnectionTimeout(self.app.conn_timeout):
|
|
conn = http_connect(node['ip'], node['port'],
|
|
node['device'], partition, 'HEAD', path, headers)
|
|
with Timeout(self.app.node_timeout):
|
|
resp = conn.getresponse()
|
|
body = resp.read()
|
|
if is_success(resp.status):
|
|
result_code = HTTP_OK
|
|
read_acl = resp.getheader('x-container-read')
|
|
write_acl = resp.getheader('x-container-write')
|
|
sync_key = resp.getheader('x-container-sync-key')
|
|
container_size = \
|
|
resp.getheader('X-Container-Object-Count')
|
|
versions = resp.getheader('x-versions-location')
|
|
break
|
|
elif resp.status == HTTP_NOT_FOUND:
|
|
if result_code == 0:
|
|
result_code = HTTP_NOT_FOUND
|
|
elif result_code != HTTP_NOT_FOUND:
|
|
result_code = -1
|
|
elif resp.status == HTTP_INSUFFICIENT_STORAGE:
|
|
self.error_limit(node)
|
|
continue
|
|
else:
|
|
result_code = -1
|
|
attempts_left -= 1
|
|
if attempts_left <= 0:
|
|
break
|
|
except (Exception, Timeout):
|
|
self.exception_occurred(node, _('Container'),
|
|
_('Trying to get container info for %s') % path)
|
|
if self.app.memcache and result_code in (HTTP_OK, HTTP_NOT_FOUND):
|
|
if result_code == HTTP_OK:
|
|
cache_timeout = self.app.recheck_container_existence
|
|
else:
|
|
cache_timeout = self.app.recheck_container_existence * 0.1
|
|
self.app.memcache.set(cache_key,
|
|
{'status': result_code,
|
|
'read_acl': read_acl,
|
|
'write_acl': write_acl,
|
|
'sync_key': sync_key,
|
|
'container_size': container_size,
|
|
'versions': versions},
|
|
timeout=cache_timeout)
|
|
if result_code == HTTP_OK:
|
|
return partition, nodes, read_acl, write_acl, sync_key, versions
|
|
return None, None, None, None, None, None
|
|
|
|
def iter_nodes(self, partition, nodes, ring):
|
|
"""
|
|
Node iterator that will first iterate over the normal nodes for a
|
|
partition and then the handoff partitions for the node.
|
|
|
|
:param partition: partition to iterate nodes for
|
|
:param nodes: list of node dicts from the ring
|
|
:param ring: ring to get handoff nodes from
|
|
"""
|
|
for node in nodes:
|
|
if not self.error_limited(node):
|
|
yield node
|
|
for node in ring.get_more_nodes(partition):
|
|
if not self.error_limited(node):
|
|
yield node
|
|
|
|
def _make_request(self, nodes, part, method, path, headers, query):
|
|
for node in nodes:
|
|
try:
|
|
with ConnectionTimeout(self.app.conn_timeout):
|
|
conn = http_connect(node['ip'], node['port'],
|
|
node['device'], part, method, path,
|
|
headers=headers, query_string=query)
|
|
conn.node = node
|
|
with Timeout(self.app.node_timeout):
|
|
resp = conn.getresponse()
|
|
if not is_informational(resp.status) and \
|
|
not is_server_error(resp.status):
|
|
return resp.status, resp.reason, resp.read()
|
|
elif resp.status == HTTP_INSUFFICIENT_STORAGE:
|
|
self.error_limit(node)
|
|
except (Exception, Timeout):
|
|
self.exception_occurred(node, self.server_type,
|
|
_('Trying to %(method)s %(path)s') %
|
|
{'method': method, 'path': path})
|
|
|
|
def make_requests(self, req, ring, part, method, path, headers,
|
|
query_string=''):
|
|
"""
|
|
Sends an HTTP request to multiple nodes and aggregates the results.
|
|
It attempts the primary nodes concurrently, then iterates over the
|
|
handoff nodes as needed.
|
|
|
|
:param headers: a list of dicts, where each dict represents one
|
|
backend request that should be made.
|
|
:returns: a webob Response object
|
|
"""
|
|
start_nodes = ring.get_part_nodes(part)
|
|
nodes = self.iter_nodes(part, start_nodes, ring)
|
|
pile = GreenPile(len(start_nodes))
|
|
for head in headers:
|
|
pile.spawn(self._make_request, nodes, part, method, path,
|
|
head, query_string)
|
|
response = [resp for resp in pile if resp]
|
|
while len(response) < len(start_nodes):
|
|
response.append((HTTP_SERVICE_UNAVAILABLE, '', ''))
|
|
statuses, reasons, bodies = zip(*response)
|
|
return self.best_response(req, statuses, reasons, bodies,
|
|
'%s %s' % (self.server_type, req.method))
|
|
|
|
def best_response(self, req, statuses, reasons, bodies, server_type,
|
|
etag=None):
|
|
"""
|
|
Given a list of responses from several servers, choose the best to
|
|
return to the API.
|
|
|
|
:param req: webob.Request object
|
|
:param statuses: list of statuses returned
|
|
:param reasons: list of reasons for each status
|
|
:param bodies: bodies of each response
|
|
:param server_type: type of server the responses came from
|
|
:param etag: etag
|
|
:returns: webob.Response object with the correct status, body, etc. set
|
|
"""
|
|
resp = Response(request=req)
|
|
if len(statuses):
|
|
for hundred in (HTTP_OK, HTTP_MULTIPLE_CHOICES, HTTP_BAD_REQUEST):
|
|
hstatuses = \
|
|
[s for s in statuses if hundred <= s < hundred + 100]
|
|
if len(hstatuses) > len(statuses) / 2:
|
|
status = max(hstatuses)
|
|
status_index = statuses.index(status)
|
|
resp.status = '%s %s' % (status, reasons[status_index])
|
|
resp.body = bodies[status_index]
|
|
resp.content_type = 'text/html'
|
|
if etag:
|
|
resp.headers['etag'] = etag.strip('"')
|
|
return resp
|
|
self.app.logger.error(_('%(type)s returning 503 for %(statuses)s'),
|
|
{'type': server_type, 'statuses': statuses})
|
|
resp.status = '503 Internal Server Error'
|
|
return resp
|
|
|
|
@public
|
|
def GET(self, req):
|
|
"""Handler for HTTP GET requests."""
|
|
return self.GETorHEAD(req, stats_type='GET')
|
|
|
|
@public
|
|
def HEAD(self, req):
|
|
"""Handler for HTTP HEAD requests."""
|
|
return self.GETorHEAD(req, stats_type='HEAD')
|
|
|
|
def _make_app_iter_reader(self, node, source, queue):
|
|
"""
|
|
Reads from the source and places data in the queue. It expects
|
|
something else be reading from the queue and, if nothing does within
|
|
self.app.client_timeout seconds, the process will be aborted.
|
|
|
|
:param node: The node dict that the source is connected to, for
|
|
logging/error-limiting purposes.
|
|
:param source: The httplib.Response object to read from.
|
|
:param queue: The eventlet.queue.Queue to place read source data into.
|
|
"""
|
|
try:
|
|
try:
|
|
while True:
|
|
with ChunkReadTimeout(self.app.node_timeout):
|
|
chunk = source.read(self.app.object_chunk_size)
|
|
if not chunk:
|
|
break
|
|
queue.put(chunk, timeout=self.app.client_timeout)
|
|
except Full:
|
|
self.app.logger.warn(
|
|
_('Client did not read from queue within %ss') %
|
|
self.app.client_timeout)
|
|
self.app.logger.increment('client_timeouts')
|
|
except (Exception, Timeout):
|
|
self.exception_occurred(node, _('Object'),
|
|
_('Trying to read during GET'))
|
|
finally:
|
|
# Ensure the queue getter gets an empty-string-terminator.
|
|
queue.resize(2)
|
|
queue.put('')
|
|
# Close-out the connection as best as possible.
|
|
if getattr(source, 'swift_conn', None):
|
|
try:
|
|
source.swift_conn.close()
|
|
except Exception:
|
|
pass
|
|
source.swift_conn = None
|
|
try:
|
|
while source.read(self.app.object_chunk_size):
|
|
pass
|
|
except Exception:
|
|
pass
|
|
try:
|
|
source.close()
|
|
except Exception:
|
|
pass
|
|
|
|
def _make_app_iter(self, node, source, response):
|
|
"""
|
|
Returns an iterator over the contents of the source (via its read
|
|
func). There is also quite a bit of cleanup to ensure garbage
|
|
collection works and the underlying socket of the source is closed.
|
|
|
|
:param response: The webob.Response object this iterator should be
|
|
assigned to via response.app_iter.
|
|
:param source: The httplib.Response object this iterator should read
|
|
from.
|
|
:param node: The node the source is reading from, for logging purposes.
|
|
"""
|
|
try:
|
|
try:
|
|
# Spawn reader to read from the source and place in the queue.
|
|
# We then drop any reference to the source or node, for garbage
|
|
# collection purposes.
|
|
queue = Queue(1)
|
|
spawn_n(self._make_app_iter_reader, node, source, queue)
|
|
source = node = None
|
|
while True:
|
|
chunk = queue.get(timeout=self.app.node_timeout)
|
|
if not chunk:
|
|
break
|
|
yield chunk
|
|
except Empty:
|
|
raise ChunkReadTimeout()
|
|
except (GeneratorExit, Timeout):
|
|
self.app.logger.warn(_('Client disconnected on read'))
|
|
except Exception:
|
|
self.app.logger.exception(_('Trying to send to client'))
|
|
raise
|
|
finally:
|
|
response.app_iter = None
|
|
|
|
def GETorHEAD_base(self, req, server_type, partition, nodes, path,
|
|
attempts):
|
|
"""
|
|
Base handler for HTTP GET or HEAD requests.
|
|
|
|
:param req: webob.Request object
|
|
:param server_type: server type
|
|
:param partition: partition
|
|
:param nodes: nodes
|
|
:param path: path for the request
|
|
:param attempts: number of attempts to try
|
|
:returns: webob.Response object
|
|
"""
|
|
statuses = []
|
|
reasons = []
|
|
bodies = []
|
|
source = None
|
|
newest = req.headers.get('x-newest', 'f').lower() in TRUE_VALUES
|
|
for node in nodes:
|
|
if len(statuses) >= attempts:
|
|
break
|
|
if self.error_limited(node):
|
|
continue
|
|
try:
|
|
with ConnectionTimeout(self.app.conn_timeout):
|
|
headers = dict(req.headers)
|
|
headers['Connection'] = 'close'
|
|
conn = http_connect(node['ip'], node['port'],
|
|
node['device'], partition, req.method, path,
|
|
headers=headers,
|
|
query_string=req.query_string)
|
|
with Timeout(self.app.node_timeout):
|
|
possible_source = conn.getresponse()
|
|
# See NOTE: swift_conn at top of file about this.
|
|
possible_source.swift_conn = conn
|
|
except (Exception, Timeout):
|
|
self.exception_occurred(node, server_type,
|
|
_('Trying to %(method)s %(path)s') %
|
|
{'method': req.method, 'path': req.path})
|
|
continue
|
|
if possible_source.status == HTTP_INSUFFICIENT_STORAGE:
|
|
self.error_limit(node)
|
|
continue
|
|
if is_success(possible_source.status) or \
|
|
is_redirection(possible_source.status):
|
|
# 404 if we know we don't have a synced copy
|
|
if not float(possible_source.getheader('X-PUT-Timestamp', 1)):
|
|
statuses.append(HTTP_NOT_FOUND)
|
|
reasons.append('')
|
|
bodies.append('')
|
|
possible_source.read()
|
|
continue
|
|
if newest:
|
|
if source:
|
|
ts = float(source.getheader('x-put-timestamp') or
|
|
source.getheader('x-timestamp') or 0)
|
|
pts = float(
|
|
possible_source.getheader('x-put-timestamp') or
|
|
possible_source.getheader('x-timestamp') or 0)
|
|
if pts > ts:
|
|
source = possible_source
|
|
else:
|
|
source = possible_source
|
|
continue
|
|
else:
|
|
source = possible_source
|
|
break
|
|
statuses.append(possible_source.status)
|
|
reasons.append(possible_source.reason)
|
|
bodies.append(possible_source.read())
|
|
if is_server_error(possible_source.status):
|
|
self.error_occurred(node, _('ERROR %(status)d %(body)s ' \
|
|
'From %(type)s Server') %
|
|
{'status': possible_source.status,
|
|
'body': bodies[-1][:1024], 'type': server_type})
|
|
if source:
|
|
if req.method == 'GET' and \
|
|
source.status in (HTTP_OK, HTTP_PARTIAL_CONTENT):
|
|
res = Response(request=req, conditional_response=True)
|
|
res.app_iter = self._make_app_iter(node, source, res)
|
|
# See NOTE: swift_conn at top of file about this.
|
|
res.swift_conn = source.swift_conn
|
|
update_headers(res, source.getheaders())
|
|
# Used by container sync feature
|
|
res.environ['swift_x_timestamp'] = \
|
|
source.getheader('x-timestamp')
|
|
update_headers(res, {'accept-ranges': 'bytes'})
|
|
res.status = source.status
|
|
res.content_length = source.getheader('Content-Length')
|
|
if source.getheader('Content-Type'):
|
|
res.charset = None
|
|
res.content_type = source.getheader('Content-Type')
|
|
return res
|
|
elif is_success(source.status) or is_redirection(source.status):
|
|
res = status_map[source.status](request=req)
|
|
update_headers(res, source.getheaders())
|
|
# Used by container sync feature
|
|
res.environ['swift_x_timestamp'] = \
|
|
source.getheader('x-timestamp')
|
|
update_headers(res, {'accept-ranges': 'bytes'})
|
|
res.content_length = source.getheader('Content-Length')
|
|
if source.getheader('Content-Type'):
|
|
res.charset = None
|
|
res.content_type = source.getheader('Content-Type')
|
|
return res
|
|
return self.best_response(req, statuses, reasons, bodies,
|
|
'%s %s' % (server_type, req.method))
|
|
|
|
|
|
class ObjectController(Controller):
|
|
"""WSGI controller for object requests."""
|
|
server_type = _('Object')
|
|
|
|
def __init__(self, app, account_name, container_name, object_name,
|
|
**kwargs):
|
|
Controller.__init__(self, app)
|
|
self.account_name = unquote(account_name)
|
|
self.container_name = unquote(container_name)
|
|
self.object_name = unquote(object_name)
|
|
|
|
def _listing_iter(self, lcontainer, lprefix, env):
|
|
lpartition, lnodes = self.app.container_ring.get_nodes(
|
|
self.account_name, lcontainer)
|
|
marker = ''
|
|
while True:
|
|
lreq = Request.blank('i will be overridden by env', environ=env)
|
|
lreq.environ['PATH_INFO'] = \
|
|
'/%s/%s' % (quote(self.account_name), quote(lcontainer))
|
|
lreq.environ['REQUEST_METHOD'] = 'GET'
|
|
lreq.environ['QUERY_STRING'] = \
|
|
'format=json&prefix=%s&marker=%s' % (quote(lprefix),
|
|
quote(marker))
|
|
shuffle(lnodes)
|
|
lresp = self.GETorHEAD_base(lreq, _('Container'),
|
|
lpartition, lnodes, lreq.path_info,
|
|
len(lnodes))
|
|
if 'swift.authorize' in env:
|
|
lreq.acl = lresp.headers.get('x-container-read')
|
|
aresp = env['swift.authorize'](lreq)
|
|
if aresp:
|
|
raise ListingIterNotAuthorized(aresp)
|
|
if lresp.status_int == HTTP_NOT_FOUND:
|
|
raise ListingIterNotFound()
|
|
elif not is_success(lresp.status_int):
|
|
raise ListingIterError()
|
|
if not lresp.body:
|
|
break
|
|
sublisting = json.loads(lresp.body)
|
|
if not sublisting:
|
|
break
|
|
marker = sublisting[-1]['name']
|
|
for obj in sublisting:
|
|
yield obj
|
|
|
|
def GETorHEAD(self, req, stats_type):
|
|
"""Handle HTTP GET or HEAD requests."""
|
|
start_time = time.time()
|
|
_junk, _junk, req.acl, _junk, _junk, object_versions = \
|
|
self.container_info(self.account_name, self.container_name)
|
|
if 'swift.authorize' in req.environ:
|
|
aresp = req.environ['swift.authorize'](req)
|
|
if aresp:
|
|
self.app.logger.increment('auth_short_circuits')
|
|
return aresp
|
|
partition, nodes = self.app.object_ring.get_nodes(
|
|
self.account_name, self.container_name, self.object_name)
|
|
shuffle(nodes)
|
|
resp = self.GETorHEAD_base(req, _('Object'), partition,
|
|
self.iter_nodes(partition, nodes, self.app.object_ring),
|
|
req.path_info, len(nodes))
|
|
# Whether we get a 416 Requested Range Not Satisfiable or not,
|
|
# we should request a manifest because size of manifest file
|
|
# can be not 0. After checking a manifest, redo the range request
|
|
# on the whole object.
|
|
if req.range:
|
|
req_range = req.range
|
|
req.range = None
|
|
resp2 = self.GETorHEAD_base(req, _('Object'), partition,
|
|
self.iter_nodes(partition,
|
|
nodes,
|
|
self.app.object_ring),
|
|
req.path_info, len(nodes))
|
|
if 'x-object-manifest' not in resp2.headers:
|
|
self.app.logger.timing_since(
|
|
'%s.timing' % (stats_type,), start_time)
|
|
return resp
|
|
resp = resp2
|
|
req.range = req_range
|
|
|
|
if 'x-object-manifest' in resp.headers:
|
|
lcontainer, lprefix = \
|
|
resp.headers['x-object-manifest'].split('/', 1)
|
|
try:
|
|
listing = list(self._listing_iter(lcontainer, lprefix,
|
|
req.environ))
|
|
except ListingIterNotFound:
|
|
self.app.logger.timing_since(
|
|
'%s.timing' % (stats_type,), start_time)
|
|
return HTTPNotFound(request=req)
|
|
except ListingIterNotAuthorized, err:
|
|
self.app.logger.increment('auth_short_circuits')
|
|
return err.aresp
|
|
except ListingIterError:
|
|
self.app.logger.increment('errors')
|
|
return HTTPServerError(request=req)
|
|
|
|
if len(listing) > CONTAINER_LISTING_LIMIT:
|
|
resp = Response(headers=resp.headers, request=req,
|
|
conditional_response=True)
|
|
if req.method == 'HEAD':
|
|
# These shenanigans are because webob translates the HEAD
|
|
# request into a webob EmptyResponse for the body, which
|
|
# has a len, which eventlet translates as needing a
|
|
# content-length header added. So we call the original
|
|
# webob resp for the headers but return an empty iterator
|
|
# for the body.
|
|
|
|
def head_response(environ, start_response):
|
|
resp(environ, start_response)
|
|
return iter([])
|
|
|
|
head_response.status_int = resp.status_int
|
|
self.app.logger.timing_since(
|
|
'%s.timing' % (stats_type,), start_time)
|
|
return head_response
|
|
else:
|
|
resp.app_iter = SegmentedIterable(self, lcontainer,
|
|
self._listing_iter(lcontainer, lprefix, req.environ),
|
|
resp)
|
|
|
|
else:
|
|
# For objects with a reasonable number of segments, we'll serve
|
|
# them with a set content-length and computed etag.
|
|
if listing:
|
|
content_length = sum(o['bytes'] for o in listing)
|
|
last_modified = max(o['last_modified'] for o in listing)
|
|
last_modified = datetime(*map(int, re.split('[^\d]',
|
|
last_modified)[:-1]))
|
|
etag = md5(
|
|
''.join(o['hash'] for o in listing)).hexdigest()
|
|
else:
|
|
content_length = 0
|
|
last_modified = resp.last_modified
|
|
etag = md5().hexdigest()
|
|
resp = Response(headers=resp.headers, request=req,
|
|
conditional_response=True)
|
|
resp.app_iter = SegmentedIterable(self, lcontainer, listing,
|
|
resp)
|
|
resp.content_length = content_length
|
|
resp.last_modified = last_modified
|
|
resp.etag = etag
|
|
resp.headers['accept-ranges'] = 'bytes'
|
|
|
|
self.app.logger.timing_since('%s.timing' % (stats_type,), start_time)
|
|
return resp
|
|
|
|
@public
|
|
@delay_denial
|
|
def GET(self, req):
|
|
"""Handler for HTTP GET requests."""
|
|
return self.GETorHEAD(req, stats_type='GET')
|
|
|
|
@public
|
|
@delay_denial
|
|
def HEAD(self, req):
|
|
"""Handler for HTTP HEAD requests."""
|
|
return self.GETorHEAD(req, stats_type='HEAD')
|
|
|
|
@public
|
|
@delay_denial
|
|
def POST(self, req):
|
|
"""HTTP POST request handler."""
|
|
start_time = time.time()
|
|
if 'x-delete-after' in req.headers:
|
|
try:
|
|
x_delete_after = int(req.headers['x-delete-after'])
|
|
except ValueError:
|
|
self.app.logger.increment('errors')
|
|
return HTTPBadRequest(request=req,
|
|
content_type='text/plain',
|
|
body='Non-integer X-Delete-After')
|
|
req.headers['x-delete-at'] = '%d' % (time.time() + x_delete_after)
|
|
if self.app.object_post_as_copy:
|
|
req.method = 'PUT'
|
|
req.path_info = '/%s/%s/%s' % (self.account_name,
|
|
self.container_name, self.object_name)
|
|
req.headers['Content-Length'] = 0
|
|
req.headers['X-Copy-From'] = quote('/%s/%s' % (self.container_name,
|
|
self.object_name))
|
|
req.headers['X-Fresh-Metadata'] = 'true'
|
|
req.environ['swift_versioned_copy'] = True
|
|
resp = self.PUT(req, start_time=start_time, stats_type='POST')
|
|
# Older editions returned 202 Accepted on object POSTs, so we'll
|
|
# convert any 201 Created responses to that for compatibility with
|
|
# picky clients.
|
|
if resp.status_int != HTTP_CREATED:
|
|
return resp
|
|
return HTTPAccepted(request=req)
|
|
else:
|
|
error_response = check_metadata(req, 'object')
|
|
if error_response:
|
|
self.app.logger.increment('errors')
|
|
return error_response
|
|
container_partition, containers, _junk, req.acl, _junk, _junk = \
|
|
self.container_info(self.account_name, self.container_name,
|
|
account_autocreate=self.app.account_autocreate)
|
|
if 'swift.authorize' in req.environ:
|
|
aresp = req.environ['swift.authorize'](req)
|
|
if aresp:
|
|
self.app.logger.increment('auth_short_circuits')
|
|
return aresp
|
|
if not containers:
|
|
self.app.logger.timing_since('POST.timing', start_time)
|
|
return HTTPNotFound(request=req)
|
|
if 'x-delete-at' in req.headers:
|
|
try:
|
|
x_delete_at = int(req.headers['x-delete-at'])
|
|
if x_delete_at < time.time():
|
|
self.app.logger.increment('errors')
|
|
return HTTPBadRequest(body='X-Delete-At in past',
|
|
request=req, content_type='text/plain')
|
|
except ValueError:
|
|
self.app.logger.increment('errors')
|
|
return HTTPBadRequest(request=req,
|
|
content_type='text/plain',
|
|
body='Non-integer X-Delete-At')
|
|
delete_at_container = str(x_delete_at /
|
|
self.app.expiring_objects_container_divisor *
|
|
self.app.expiring_objects_container_divisor)
|
|
delete_at_part, delete_at_nodes = \
|
|
self.app.container_ring.get_nodes(
|
|
self.app.expiring_objects_account, delete_at_container)
|
|
else:
|
|
delete_at_part = delete_at_nodes = None
|
|
partition, nodes = self.app.object_ring.get_nodes(
|
|
self.account_name, self.container_name, self.object_name)
|
|
req.headers['X-Timestamp'] = normalize_timestamp(time.time())
|
|
headers = []
|
|
for container in containers:
|
|
nheaders = dict(req.headers.iteritems())
|
|
nheaders['Connection'] = 'close'
|
|
nheaders['X-Container-Host'] = '%(ip)s:%(port)s' % container
|
|
nheaders['X-Container-Partition'] = container_partition
|
|
nheaders['X-Container-Device'] = container['device']
|
|
if delete_at_nodes:
|
|
node = delete_at_nodes.pop(0)
|
|
nheaders['X-Delete-At-Host'] = '%(ip)s:%(port)s' % node
|
|
nheaders['X-Delete-At-Partition'] = delete_at_part
|
|
nheaders['X-Delete-At-Device'] = node['device']
|
|
headers.append(nheaders)
|
|
resp = self.make_requests(req, self.app.object_ring, partition,
|
|
'POST', req.path_info, headers)
|
|
self.app.logger.timing_since('POST.timing', start_time)
|
|
return resp
|
|
|
|
def _send_file(self, conn, path):
|
|
"""Method for a file PUT coro"""
|
|
while True:
|
|
chunk = conn.queue.get()
|
|
if not conn.failed:
|
|
try:
|
|
with ChunkWriteTimeout(self.app.node_timeout):
|
|
conn.send(chunk)
|
|
except (Exception, ChunkWriteTimeout):
|
|
conn.failed = True
|
|
self.exception_occurred(conn.node, _('Object'),
|
|
_('Trying to write to %s') % path)
|
|
conn.queue.task_done()
|
|
|
|
def _connect_put_node(self, nodes, part, path, headers):
|
|
"""Method for a file PUT connect"""
|
|
for node in nodes:
|
|
try:
|
|
with ConnectionTimeout(self.app.conn_timeout):
|
|
conn = http_connect(node['ip'], node['port'],
|
|
node['device'], part, 'PUT', path, headers)
|
|
with Timeout(self.app.node_timeout):
|
|
resp = conn.getexpect()
|
|
if resp.status == HTTP_CONTINUE:
|
|
conn.node = node
|
|
return conn
|
|
elif resp.status == HTTP_INSUFFICIENT_STORAGE:
|
|
self.error_limit(node)
|
|
except:
|
|
self.exception_occurred(node, _('Object'),
|
|
_('Expect: 100-continue on %s') % path)
|
|
|
|
@public
|
|
@delay_denial
|
|
def PUT(self, req, start_time=None, stats_type='PUT'):
|
|
"""HTTP PUT request handler."""
|
|
if not start_time:
|
|
start_time = time.time()
|
|
(container_partition, containers, _junk, req.acl,
|
|
req.environ['swift_sync_key'], object_versions) = \
|
|
self.container_info(self.account_name, self.container_name,
|
|
account_autocreate=self.app.account_autocreate)
|
|
if 'swift.authorize' in req.environ:
|
|
aresp = req.environ['swift.authorize'](req)
|
|
if aresp:
|
|
self.app.logger.increment('auth_short_circuits')
|
|
return aresp
|
|
if not containers:
|
|
self.app.logger.timing_since(
|
|
'%s.timing' % (stats_type,), start_time)
|
|
return HTTPNotFound(request=req)
|
|
if 'x-delete-after' in req.headers:
|
|
try:
|
|
x_delete_after = int(req.headers['x-delete-after'])
|
|
except ValueError:
|
|
self.app.logger.increment('errors')
|
|
return HTTPBadRequest(request=req,
|
|
content_type='text/plain',
|
|
body='Non-integer X-Delete-After')
|
|
req.headers['x-delete-at'] = '%d' % (time.time() + x_delete_after)
|
|
if 'x-delete-at' in req.headers:
|
|
try:
|
|
x_delete_at = int(req.headers['x-delete-at'])
|
|
if x_delete_at < time.time():
|
|
self.app.logger.increment('errors')
|
|
return HTTPBadRequest(body='X-Delete-At in past',
|
|
request=req, content_type='text/plain')
|
|
except ValueError:
|
|
self.app.logger.increment('errors')
|
|
return HTTPBadRequest(request=req, content_type='text/plain',
|
|
body='Non-integer X-Delete-At')
|
|
delete_at_container = str(x_delete_at /
|
|
self.app.expiring_objects_container_divisor *
|
|
self.app.expiring_objects_container_divisor)
|
|
delete_at_part, delete_at_nodes = \
|
|
self.app.container_ring.get_nodes(
|
|
self.app.expiring_objects_account, delete_at_container)
|
|
else:
|
|
delete_at_part = delete_at_nodes = None
|
|
partition, nodes = self.app.object_ring.get_nodes(
|
|
self.account_name, self.container_name, self.object_name)
|
|
# do a HEAD request for container sync and checking object versions
|
|
if 'x-timestamp' in req.headers or (object_versions and not
|
|
req.environ.get('swift_versioned_copy')):
|
|
hreq = Request.blank(req.path_info, headers={'X-Newest': 'True'},
|
|
environ={'REQUEST_METHOD': 'HEAD'})
|
|
hresp = self.GETorHEAD_base(hreq, _('Object'), partition, nodes,
|
|
hreq.path_info, len(nodes))
|
|
# Used by container sync feature
|
|
if 'x-timestamp' in req.headers:
|
|
try:
|
|
req.headers['X-Timestamp'] = \
|
|
normalize_timestamp(float(req.headers['x-timestamp']))
|
|
if 'swift_x_timestamp' in hresp.environ and \
|
|
float(hresp.environ['swift_x_timestamp']) >= \
|
|
float(req.headers['x-timestamp']):
|
|
self.app.logger.timing_since(
|
|
'%.timing' % (stats_type,), start_time)
|
|
return HTTPAccepted(request=req)
|
|
except ValueError:
|
|
self.app.logger.increment('errors')
|
|
return HTTPBadRequest(request=req, content_type='text/plain',
|
|
body='X-Timestamp should be a UNIX timestamp float value; '
|
|
'was %r' % req.headers['x-timestamp'])
|
|
else:
|
|
req.headers['X-Timestamp'] = normalize_timestamp(time.time())
|
|
# Sometimes the 'content-type' header exists, but is set to None.
|
|
content_type_manually_set = True
|
|
if not req.headers.get('content-type'):
|
|
guessed_type, _junk = mimetypes.guess_type(req.path_info)
|
|
req.headers['Content-Type'] = guessed_type or \
|
|
'application/octet-stream'
|
|
content_type_manually_set = False
|
|
error_response = check_object_creation(req, self.object_name)
|
|
if error_response:
|
|
self.app.logger.increment('errors')
|
|
return error_response
|
|
if object_versions and not req.environ.get('swift_versioned_copy'):
|
|
is_manifest = 'x-object-manifest' in req.headers or \
|
|
'x-object-manifest' in hresp.headers
|
|
if hresp.status_int != HTTP_NOT_FOUND and not is_manifest:
|
|
# This is a version manifest and needs to be handled
|
|
# differently. First copy the existing data to a new object,
|
|
# then write the data from this request to the version manifest
|
|
# object.
|
|
lcontainer = object_versions.split('/')[0]
|
|
prefix_len = '%03x' % len(self.object_name)
|
|
lprefix = prefix_len + self.object_name + '/'
|
|
ts_source = hresp.environ.get('swift_x_timestamp')
|
|
if ts_source is None:
|
|
ts_source = time.mktime(time.strptime(
|
|
hresp.headers['last-modified'],
|
|
'%a, %d %b %Y %H:%M:%S GMT'))
|
|
new_ts = normalize_timestamp(ts_source)
|
|
vers_obj_name = lprefix + new_ts
|
|
copy_headers = {
|
|
'Destination': '%s/%s' % (lcontainer, vers_obj_name)}
|
|
copy_environ = {'REQUEST_METHOD': 'COPY',
|
|
'swift_versioned_copy': True
|
|
}
|
|
copy_req = Request.blank(req.path_info, headers=copy_headers,
|
|
environ=copy_environ)
|
|
copy_resp = self.COPY(copy_req)
|
|
if is_client_error(copy_resp.status_int):
|
|
# missing container or bad permissions
|
|
return HTTPPreconditionFailed(request=req)
|
|
elif not is_success(copy_resp.status_int):
|
|
# could not copy the data, bail
|
|
return HTTPServiceUnavailable(request=req)
|
|
|
|
reader = req.environ['wsgi.input'].read
|
|
data_source = iter(lambda: reader(self.app.client_chunk_size), '')
|
|
source_header = req.headers.get('X-Copy-From')
|
|
source_resp = None
|
|
if source_header:
|
|
source_header = unquote(source_header)
|
|
acct = req.path_info.split('/', 2)[1]
|
|
if not source_header.startswith('/'):
|
|
source_header = '/' + source_header
|
|
source_header = '/' + acct + source_header
|
|
try:
|
|
src_container_name, src_obj_name = \
|
|
source_header.split('/', 3)[2:]
|
|
except ValueError:
|
|
self.app.logger.increment('errors')
|
|
return HTTPPreconditionFailed(request=req,
|
|
body='X-Copy-From header must be of the form'
|
|
'<container name>/<object name>')
|
|
source_req = req.copy_get()
|
|
source_req.path_info = source_header
|
|
source_req.headers['X-Newest'] = 'true'
|
|
orig_obj_name = self.object_name
|
|
orig_container_name = self.container_name
|
|
self.object_name = src_obj_name
|
|
self.container_name = src_container_name
|
|
source_resp = self.GET(source_req)
|
|
if source_resp.status_int >= HTTP_MULTIPLE_CHOICES:
|
|
self.app.logger.timing_since(
|
|
'%s.timing' % (stats_type,), start_time)
|
|
return source_resp
|
|
self.object_name = orig_obj_name
|
|
self.container_name = orig_container_name
|
|
new_req = Request.blank(req.path_info,
|
|
environ=req.environ, headers=req.headers)
|
|
data_source = source_resp.app_iter
|
|
new_req.content_length = source_resp.content_length
|
|
if new_req.content_length is None:
|
|
# This indicates a transfer-encoding: chunked source object,
|
|
# which currently only happens because there are more than
|
|
# CONTAINER_LISTING_LIMIT segments in a segmented object. In
|
|
# this case, we're going to refuse to do the server-side copy.
|
|
self.app.logger.increment('errors')
|
|
return HTTPRequestEntityTooLarge(request=req)
|
|
new_req.etag = source_resp.etag
|
|
# we no longer need the X-Copy-From header
|
|
del new_req.headers['X-Copy-From']
|
|
if not content_type_manually_set:
|
|
new_req.headers['Content-Type'] = \
|
|
source_resp.headers['Content-Type']
|
|
if new_req.headers.get('x-fresh-metadata', 'false').lower() \
|
|
not in TRUE_VALUES:
|
|
for k, v in source_resp.headers.items():
|
|
if k.lower().startswith('x-object-meta-'):
|
|
new_req.headers[k] = v
|
|
for k, v in req.headers.items():
|
|
if k.lower().startswith('x-object-meta-'):
|
|
new_req.headers[k] = v
|
|
req = new_req
|
|
node_iter = self.iter_nodes(partition, nodes, self.app.object_ring)
|
|
pile = GreenPile(len(nodes))
|
|
for container in containers:
|
|
nheaders = dict(req.headers.iteritems())
|
|
nheaders['Connection'] = 'close'
|
|
nheaders['X-Container-Host'] = '%(ip)s:%(port)s' % container
|
|
nheaders['X-Container-Partition'] = container_partition
|
|
nheaders['X-Container-Device'] = container['device']
|
|
nheaders['Expect'] = '100-continue'
|
|
if delete_at_nodes:
|
|
node = delete_at_nodes.pop(0)
|
|
nheaders['X-Delete-At-Host'] = '%(ip)s:%(port)s' % node
|
|
nheaders['X-Delete-At-Partition'] = delete_at_part
|
|
nheaders['X-Delete-At-Device'] = node['device']
|
|
pile.spawn(self._connect_put_node, node_iter, partition,
|
|
req.path_info, nheaders)
|
|
conns = [conn for conn in pile if conn]
|
|
if len(conns) <= len(nodes) / 2:
|
|
self.app.logger.error(
|
|
_('Object PUT returning 503, %(conns)s/%(nodes)s '
|
|
'required connections'),
|
|
{'conns': len(conns), 'nodes': len(nodes) // 2 + 1})
|
|
self.app.logger.increment('errors')
|
|
return HTTPServiceUnavailable(request=req)
|
|
chunked = req.headers.get('transfer-encoding')
|
|
bytes_transferred = 0
|
|
try:
|
|
with ContextPool(len(nodes)) as pool:
|
|
for conn in conns:
|
|
conn.failed = False
|
|
conn.queue = Queue(self.app.put_queue_depth)
|
|
pool.spawn(self._send_file, conn, req.path)
|
|
while True:
|
|
with ChunkReadTimeout(self.app.client_timeout):
|
|
try:
|
|
chunk = next(data_source)
|
|
except StopIteration:
|
|
if chunked:
|
|
[conn.queue.put('0\r\n\r\n') for conn in conns]
|
|
break
|
|
bytes_transferred += len(chunk)
|
|
if bytes_transferred > MAX_FILE_SIZE:
|
|
self.app.logger.increment('errors')
|
|
return HTTPRequestEntityTooLarge(request=req)
|
|
for conn in list(conns):
|
|
if not conn.failed:
|
|
conn.queue.put('%x\r\n%s\r\n' % (len(chunk), chunk)
|
|
if chunked else chunk)
|
|
else:
|
|
conns.remove(conn)
|
|
if len(conns) <= len(nodes) / 2:
|
|
self.app.logger.error(_('Object PUT exceptions during'
|
|
' send, %(conns)s/%(nodes)s required connections'),
|
|
{'conns': len(conns), 'nodes': len(nodes) / 2 + 1})
|
|
self.app.logger.increment('errors')
|
|
return HTTPServiceUnavailable(request=req)
|
|
for conn in conns:
|
|
if conn.queue.unfinished_tasks:
|
|
conn.queue.join()
|
|
conns = [conn for conn in conns if not conn.failed]
|
|
except ChunkReadTimeout, err:
|
|
self.app.logger.warn(
|
|
_('ERROR Client read timeout (%ss)'), err.seconds)
|
|
self.app.logger.increment('client_timeouts')
|
|
return HTTPRequestTimeout(request=req)
|
|
except (Exception, Timeout):
|
|
self.app.logger.exception(
|
|
_('ERROR Exception causing client disconnect'))
|
|
self.app.logger.increment('client_disconnects')
|
|
self.app.logger.timing_since(
|
|
'%s.timing' % (stats_type,), start_time)
|
|
return HTTPClientDisconnect(request=req)
|
|
if req.content_length and bytes_transferred < req.content_length:
|
|
req.client_disconnect = True
|
|
self.app.logger.warn(
|
|
_('Client disconnected without sending enough data'))
|
|
self.app.logger.increment('client_disconnects')
|
|
self.app.logger.timing_since(
|
|
'%s.timing' % (stats_type,), start_time)
|
|
return HTTPClientDisconnect(request=req)
|
|
statuses = []
|
|
reasons = []
|
|
bodies = []
|
|
etags = set()
|
|
for conn in conns:
|
|
try:
|
|
with Timeout(self.app.node_timeout):
|
|
response = conn.getresponse()
|
|
statuses.append(response.status)
|
|
reasons.append(response.reason)
|
|
bodies.append(response.read())
|
|
if response.status >= HTTP_INTERNAL_SERVER_ERROR:
|
|
self.error_occurred(conn.node,
|
|
_('ERROR %(status)d %(body)s From Object Server ' \
|
|
're: %(path)s') % {'status': response.status,
|
|
'body': bodies[-1][:1024], 'path': req.path})
|
|
elif is_success(response.status):
|
|
etags.add(response.getheader('etag').strip('"'))
|
|
except (Exception, Timeout):
|
|
self.exception_occurred(conn.node, _('Object'),
|
|
_('Trying to get final status of PUT to %s') % req.path)
|
|
if len(etags) > 1:
|
|
self.app.logger.error(
|
|
_('Object servers returned %s mismatched etags'), len(etags))
|
|
self.app.logger.increment('errors')
|
|
return HTTPServerError(request=req)
|
|
etag = len(etags) and etags.pop() or None
|
|
while len(statuses) < len(nodes):
|
|
statuses.append(HTTP_SERVICE_UNAVAILABLE)
|
|
reasons.append('')
|
|
bodies.append('')
|
|
resp = self.best_response(req, statuses, reasons, bodies,
|
|
_('Object PUT'), etag=etag)
|
|
if source_header:
|
|
resp.headers['X-Copied-From'] = quote(
|
|
source_header.split('/', 2)[2])
|
|
if 'last-modified' in source_resp.headers:
|
|
resp.headers['X-Copied-From-Last-Modified'] = \
|
|
source_resp.headers['last-modified']
|
|
for k, v in req.headers.items():
|
|
if k.lower().startswith('x-object-meta-'):
|
|
resp.headers[k] = v
|
|
resp.last_modified = float(req.headers['X-Timestamp'])
|
|
self.app.logger.timing_since('%s.timing' % (stats_type,), start_time)
|
|
return resp
|
|
|
|
@public
|
|
@delay_denial
|
|
def DELETE(self, req):
|
|
"""HTTP DELETE request handler."""
|
|
start_time = time.time()
|
|
(container_partition, containers, _junk, req.acl,
|
|
req.environ['swift_sync_key'], object_versions) = \
|
|
self.container_info(self.account_name, self.container_name)
|
|
if object_versions:
|
|
# this is a version manifest and needs to be handled differently
|
|
lcontainer = object_versions.split('/')[0]
|
|
prefix_len = '%03x' % len(self.object_name)
|
|
lprefix = prefix_len + self.object_name + '/'
|
|
last_item = None
|
|
try:
|
|
for last_item in self._listing_iter(lcontainer, lprefix,
|
|
req.environ):
|
|
pass
|
|
except ListingIterNotFound:
|
|
# no worries, last_item is None
|
|
pass
|
|
except ListingIterNotAuthorized, err:
|
|
self.app.logger.increment('auth_short_circuits')
|
|
return err.aresp
|
|
except ListingIterError:
|
|
self.app.logger.increment('errors')
|
|
return HTTPServerError(request=req)
|
|
if last_item:
|
|
# there are older versions so copy the previous version to the
|
|
# current object and delete the previous version
|
|
orig_container = self.container_name
|
|
orig_obj = self.object_name
|
|
self.container_name = lcontainer
|
|
self.object_name = last_item['name']
|
|
copy_path = '/' + self.account_name + '/' + \
|
|
self.container_name + '/' + self.object_name
|
|
copy_headers = {'X-Newest': 'True',
|
|
'Destination': orig_container + '/' + orig_obj
|
|
}
|
|
copy_environ = {'REQUEST_METHOD': 'COPY',
|
|
'swift_versioned_copy': True
|
|
}
|
|
creq = Request.blank(copy_path, headers=copy_headers,
|
|
environ=copy_environ)
|
|
copy_resp = self.COPY(creq)
|
|
if is_client_error(copy_resp.status_int):
|
|
# some user error, maybe permissions
|
|
return HTTPPreconditionFailed(request=req)
|
|
elif not is_success(copy_resp.status_int):
|
|
# could not copy the data, bail
|
|
return HTTPServiceUnavailable(request=req)
|
|
# reset these because the COPY changed them
|
|
self.container_name = lcontainer
|
|
self.object_name = last_item['name']
|
|
new_del_req = Request.blank(copy_path, environ=req.environ)
|
|
(container_partition, containers,
|
|
_junk, new_del_req.acl, _junk, _junk) = \
|
|
self.container_info(self.account_name, self.container_name)
|
|
new_del_req.path_info = copy_path
|
|
req = new_del_req
|
|
if 'swift.authorize' in req.environ:
|
|
aresp = req.environ['swift.authorize'](req)
|
|
if aresp:
|
|
self.app.logger.increment('auth_short_circuits')
|
|
return aresp
|
|
if not containers:
|
|
self.app.logger.timing_since('DELETE.timing', start_time)
|
|
return HTTPNotFound(request=req)
|
|
partition, nodes = self.app.object_ring.get_nodes(
|
|
self.account_name, self.container_name, self.object_name)
|
|
# Used by container sync feature
|
|
if 'x-timestamp' in req.headers:
|
|
try:
|
|
req.headers['X-Timestamp'] = \
|
|
normalize_timestamp(float(req.headers['x-timestamp']))
|
|
except ValueError:
|
|
self.app.logger.increment('errors')
|
|
return HTTPBadRequest(request=req, content_type='text/plain',
|
|
body='X-Timestamp should be a UNIX timestamp float value; '
|
|
'was %r' % req.headers['x-timestamp'])
|
|
else:
|
|
req.headers['X-Timestamp'] = normalize_timestamp(time.time())
|
|
headers = []
|
|
for container in containers:
|
|
nheaders = dict(req.headers.iteritems())
|
|
nheaders['Connection'] = 'close'
|
|
nheaders['X-Container-Host'] = '%(ip)s:%(port)s' % container
|
|
nheaders['X-Container-Partition'] = container_partition
|
|
nheaders['X-Container-Device'] = container['device']
|
|
headers.append(nheaders)
|
|
resp = self.make_requests(req, self.app.object_ring,
|
|
partition, 'DELETE', req.path_info, headers)
|
|
self.app.logger.timing_since('DELETE.timing', start_time)
|
|
return resp
|
|
|
|
@public
|
|
@delay_denial
|
|
def COPY(self, req):
|
|
"""HTTP COPY request handler."""
|
|
start_time = time.time()
|
|
dest = req.headers.get('Destination')
|
|
if not dest:
|
|
self.app.logger.increment('errors')
|
|
return HTTPPreconditionFailed(request=req,
|
|
body='Destination header required')
|
|
dest = unquote(dest)
|
|
if not dest.startswith('/'):
|
|
dest = '/' + dest
|
|
try:
|
|
_junk, dest_container, dest_object = dest.split('/', 2)
|
|
except ValueError:
|
|
self.app.logger.increment('errors')
|
|
return HTTPPreconditionFailed(request=req,
|
|
body='Destination header must be of the form '
|
|
'<container name>/<object name>')
|
|
source = '/' + self.container_name + '/' + self.object_name
|
|
self.container_name = dest_container
|
|
self.object_name = dest_object
|
|
# re-write the existing request as a PUT instead of creating a new one
|
|
# since this one is already attached to the posthooklogger
|
|
req.method = 'PUT'
|
|
req.path_info = '/' + self.account_name + dest
|
|
req.headers['Content-Length'] = 0
|
|
req.headers['X-Copy-From'] = quote(source)
|
|
del req.headers['Destination']
|
|
return self.PUT(req, start_time=start_time, stats_type='COPY')
|
|
|
|
|
|
class ContainerController(Controller):
|
|
"""WSGI controller for container requests"""
|
|
server_type = _('Container')
|
|
|
|
# Ensure these are all lowercase
|
|
pass_through_headers = ['x-container-read', 'x-container-write',
|
|
'x-container-sync-key', 'x-container-sync-to',
|
|
'x-versions-location']
|
|
|
|
def __init__(self, app, account_name, container_name, **kwargs):
|
|
Controller.__init__(self, app)
|
|
self.account_name = unquote(account_name)
|
|
self.container_name = unquote(container_name)
|
|
|
|
def clean_acls(self, req):
|
|
if 'swift.clean_acl' in req.environ:
|
|
for header in ('x-container-read', 'x-container-write'):
|
|
if header in req.headers:
|
|
try:
|
|
req.headers[header] = \
|
|
req.environ['swift.clean_acl'](header,
|
|
req.headers[header])
|
|
except ValueError, err:
|
|
return HTTPBadRequest(request=req, body=str(err))
|
|
return None
|
|
|
|
def GETorHEAD(self, req, stats_type):
|
|
"""Handler for HTTP GET/HEAD requests."""
|
|
start_time = time.time()
|
|
if not self.account_info(self.account_name)[1]:
|
|
self.app.logger.timing_since(
|
|
'%s.timing' % (stats_type,), start_time)
|
|
return HTTPNotFound(request=req)
|
|
part, nodes = self.app.container_ring.get_nodes(
|
|
self.account_name, self.container_name)
|
|
shuffle(nodes)
|
|
resp = self.GETorHEAD_base(req, _('Container'), part, nodes,
|
|
req.path_info, len(nodes))
|
|
|
|
if self.app.memcache:
|
|
# set the memcache container size for ratelimiting
|
|
cache_key = get_container_memcache_key(self.account_name,
|
|
self.container_name)
|
|
self.app.memcache.set(cache_key,
|
|
{'status': resp.status_int,
|
|
'read_acl': resp.headers.get('x-container-read'),
|
|
'write_acl': resp.headers.get('x-container-write'),
|
|
'sync_key': resp.headers.get('x-container-sync-key'),
|
|
'container_size': resp.headers.get('x-container-object-count'),
|
|
'versions': resp.headers.get('x-versions-location')},
|
|
timeout=self.app.recheck_container_existence)
|
|
|
|
if 'swift.authorize' in req.environ:
|
|
req.acl = resp.headers.get('x-container-read')
|
|
aresp = req.environ['swift.authorize'](req)
|
|
if aresp:
|
|
self.app.logger.increment('auth_short_circuits')
|
|
return aresp
|
|
if not req.environ.get('swift_owner', False):
|
|
for key in ('x-container-read', 'x-container-write',
|
|
'x-container-sync-key', 'x-container-sync-to'):
|
|
if key in resp.headers:
|
|
del resp.headers[key]
|
|
self.app.logger.timing_since('%s.timing' % (stats_type,), start_time)
|
|
return resp
|
|
|
|
@public
|
|
@delay_denial
|
|
def GET(self, req):
|
|
"""Handler for HTTP GET requests."""
|
|
return self.GETorHEAD(req, stats_type='GET')
|
|
|
|
@public
|
|
@delay_denial
|
|
def HEAD(self, req):
|
|
"""Handler for HTTP HEAD requests."""
|
|
return self.GETorHEAD(req, stats_type='HEAD')
|
|
|
|
@public
|
|
def PUT(self, req):
|
|
"""HTTP PUT request handler."""
|
|
start_time = time.time()
|
|
error_response = \
|
|
self.clean_acls(req) or check_metadata(req, 'container')
|
|
if error_response:
|
|
self.app.logger.increment('errors')
|
|
return error_response
|
|
if len(self.container_name) > MAX_CONTAINER_NAME_LENGTH:
|
|
resp = HTTPBadRequest(request=req)
|
|
resp.body = 'Container name length of %d longer than %d' % \
|
|
(len(self.container_name), MAX_CONTAINER_NAME_LENGTH)
|
|
self.app.logger.increment('errors')
|
|
return resp
|
|
account_partition, accounts, container_count = \
|
|
self.account_info(self.account_name,
|
|
autocreate=self.app.account_autocreate)
|
|
if self.app.max_containers_per_account > 0 and \
|
|
container_count >= self.app.max_containers_per_account and \
|
|
self.account_name not in self.app.max_containers_whitelist:
|
|
resp = HTTPForbidden(request=req)
|
|
resp.body = 'Reached container limit of %s' % \
|
|
self.app.max_containers_per_account
|
|
return resp
|
|
if not accounts:
|
|
self.app.logger.timing_since('PUT.timing', start_time)
|
|
return HTTPNotFound(request=req)
|
|
container_partition, containers = self.app.container_ring.get_nodes(
|
|
self.account_name, self.container_name)
|
|
headers = []
|
|
for account in accounts:
|
|
nheaders = {'X-Timestamp': normalize_timestamp(time.time()),
|
|
'x-trans-id': self.trans_id,
|
|
'X-Account-Host': '%(ip)s:%(port)s' % account,
|
|
'X-Account-Partition': account_partition,
|
|
'X-Account-Device': account['device'],
|
|
'Connection': 'close'}
|
|
self.transfer_headers(req.headers, nheaders)
|
|
headers.append(nheaders)
|
|
if self.app.memcache:
|
|
cache_key = get_container_memcache_key(self.account_name,
|
|
self.container_name)
|
|
self.app.memcache.delete(cache_key)
|
|
resp = self.make_requests(req, self.app.container_ring,
|
|
container_partition, 'PUT', req.path_info, headers)
|
|
self.app.logger.timing_since('PUT.timing', start_time)
|
|
return resp
|
|
|
|
@public
|
|
def POST(self, req):
|
|
"""HTTP POST request handler."""
|
|
start_time = time.time()
|
|
error_response = \
|
|
self.clean_acls(req) or check_metadata(req, 'container')
|
|
if error_response:
|
|
self.app.logger.increment('errors')
|
|
return error_response
|
|
account_partition, accounts, container_count = \
|
|
self.account_info(self.account_name,
|
|
autocreate=self.app.account_autocreate)
|
|
if not accounts:
|
|
self.app.logger.timing_since('POST.timing', start_time)
|
|
return HTTPNotFound(request=req)
|
|
container_partition, containers = self.app.container_ring.get_nodes(
|
|
self.account_name, self.container_name)
|
|
headers = {'X-Timestamp': normalize_timestamp(time.time()),
|
|
'x-trans-id': self.trans_id,
|
|
'Connection': 'close'}
|
|
self.transfer_headers(req.headers, headers)
|
|
if self.app.memcache:
|
|
cache_key = get_container_memcache_key(self.account_name,
|
|
self.container_name)
|
|
self.app.memcache.delete(cache_key)
|
|
resp = self.make_requests(req, self.app.container_ring,
|
|
container_partition, 'POST', req.path_info,
|
|
[headers] * len(containers))
|
|
self.app.logger.timing_since('POST.timing', start_time)
|
|
return resp
|
|
|
|
@public
|
|
def DELETE(self, req):
|
|
"""HTTP DELETE request handler."""
|
|
start_time = time.time()
|
|
account_partition, accounts, container_count = \
|
|
self.account_info(self.account_name)
|
|
if not accounts:
|
|
self.app.logger.timing_since('DELETE.timing', start_time)
|
|
return HTTPNotFound(request=req)
|
|
container_partition, containers = self.app.container_ring.get_nodes(
|
|
self.account_name, self.container_name)
|
|
headers = []
|
|
for account in accounts:
|
|
headers.append({'X-Timestamp': normalize_timestamp(time.time()),
|
|
'X-Trans-Id': self.trans_id,
|
|
'X-Account-Host': '%(ip)s:%(port)s' % account,
|
|
'X-Account-Partition': account_partition,
|
|
'X-Account-Device': account['device'],
|
|
'Connection': 'close'})
|
|
if self.app.memcache:
|
|
cache_key = get_container_memcache_key(self.account_name,
|
|
self.container_name)
|
|
self.app.memcache.delete(cache_key)
|
|
resp = self.make_requests(req, self.app.container_ring,
|
|
container_partition, 'DELETE', req.path_info, headers)
|
|
# Indicates no server had the container
|
|
self.app.logger.timing_since('DELETE.timing', start_time)
|
|
if resp.status_int == HTTP_ACCEPTED:
|
|
return HTTPNotFound(request=req)
|
|
return resp
|
|
|
|
|
|
class AccountController(Controller):
|
|
"""WSGI controller for account requests"""
|
|
server_type = _('Account')
|
|
|
|
def __init__(self, app, account_name, **kwargs):
|
|
Controller.__init__(self, app)
|
|
self.account_name = unquote(account_name)
|
|
|
|
def GETorHEAD(self, req, stats_type):
|
|
"""Handler for HTTP GET/HEAD requests."""
|
|
start_time = time.time()
|
|
partition, nodes = self.app.account_ring.get_nodes(self.account_name)
|
|
shuffle(nodes)
|
|
resp = self.GETorHEAD_base(req, _('Account'), partition, nodes,
|
|
req.path_info.rstrip('/'), len(nodes))
|
|
if resp.status_int == HTTP_NOT_FOUND and self.app.account_autocreate:
|
|
if len(self.account_name) > MAX_ACCOUNT_NAME_LENGTH:
|
|
resp = HTTPBadRequest(request=req)
|
|
resp.body = 'Account name length of %d longer than %d' % \
|
|
(len(self.account_name), MAX_ACCOUNT_NAME_LENGTH)
|
|
self.app.logger.timing_since(
|
|
'%s.timing' % (stats_type,), start_time)
|
|
return resp
|
|
headers = {'X-Timestamp': normalize_timestamp(time.time()),
|
|
'X-Trans-Id': self.trans_id,
|
|
'Connection': 'close'}
|
|
resp = self.make_requests(
|
|
Request.blank('/v1/' + self.account_name),
|
|
self.app.account_ring, partition, 'PUT',
|
|
'/' + self.account_name, [headers] * len(nodes))
|
|
if not is_success(resp.status_int):
|
|
raise Exception('Could not autocreate account %r' %
|
|
self.account_name)
|
|
resp = self.GETorHEAD_base(req, _('Account'), partition, nodes,
|
|
req.path_info.rstrip('/'), len(nodes))
|
|
self.app.logger.timing_since('%s.timing' % (stats_type,), start_time)
|
|
return resp
|
|
|
|
@public
|
|
def PUT(self, req):
|
|
"""HTTP PUT request handler."""
|
|
start_time = time.time()
|
|
if not self.app.allow_account_management:
|
|
self.app.logger.timing_since('PUT.timing', start_time)
|
|
return HTTPMethodNotAllowed(request=req)
|
|
error_response = check_metadata(req, 'account')
|
|
if error_response:
|
|
self.app.logger.increment('errors')
|
|
return error_response
|
|
if len(self.account_name) > MAX_ACCOUNT_NAME_LENGTH:
|
|
resp = HTTPBadRequest(request=req)
|
|
resp.body = 'Account name length of %d longer than %d' % \
|
|
(len(self.account_name), MAX_ACCOUNT_NAME_LENGTH)
|
|
self.app.logger.increment('errors')
|
|
return resp
|
|
account_partition, accounts = \
|
|
self.app.account_ring.get_nodes(self.account_name)
|
|
headers = {'X-Timestamp': normalize_timestamp(time.time()),
|
|
'x-trans-id': self.trans_id,
|
|
'Connection': 'close'}
|
|
self.transfer_headers(req.headers, headers)
|
|
if self.app.memcache:
|
|
self.app.memcache.delete('account%s' % req.path_info.rstrip('/'))
|
|
resp = self.make_requests(req, self.app.account_ring,
|
|
account_partition, 'PUT', req.path_info, [headers] * len(accounts))
|
|
self.app.logger.timing_since('PUT.timing', start_time)
|
|
return resp
|
|
|
|
@public
|
|
def POST(self, req):
|
|
"""HTTP POST request handler."""
|
|
start_time = time.time()
|
|
error_response = check_metadata(req, 'account')
|
|
if error_response:
|
|
self.app.logger.increment('errors')
|
|
return error_response
|
|
account_partition, accounts = \
|
|
self.app.account_ring.get_nodes(self.account_name)
|
|
headers = {'X-Timestamp': normalize_timestamp(time.time()),
|
|
'X-Trans-Id': self.trans_id,
|
|
'Connection': 'close'}
|
|
self.transfer_headers(req.headers, headers)
|
|
if self.app.memcache:
|
|
self.app.memcache.delete('account%s' % req.path_info.rstrip('/'))
|
|
resp = self.make_requests(req, self.app.account_ring,
|
|
account_partition, 'POST', req.path_info,
|
|
[headers] * len(accounts))
|
|
if resp.status_int == HTTP_NOT_FOUND and self.app.account_autocreate:
|
|
if len(self.account_name) > MAX_ACCOUNT_NAME_LENGTH:
|
|
resp = HTTPBadRequest(request=req)
|
|
resp.body = 'Account name length of %d longer than %d' % \
|
|
(len(self.account_name), MAX_ACCOUNT_NAME_LENGTH)
|
|
self.app.logger.increment('errors')
|
|
return resp
|
|
resp = self.make_requests(
|
|
Request.blank('/v1/' + self.account_name),
|
|
self.app.account_ring, account_partition, 'PUT',
|
|
'/' + self.account_name, [headers] * len(accounts))
|
|
if not is_success(resp.status_int):
|
|
raise Exception('Could not autocreate account %r' %
|
|
self.account_name)
|
|
self.app.logger.timing_since('POST.timing', start_time)
|
|
return resp
|
|
|
|
@public
|
|
def DELETE(self, req):
|
|
"""HTTP DELETE request handler."""
|
|
start_time = time.time()
|
|
if not self.app.allow_account_management:
|
|
self.app.logger.timing_since('DELETE.timing', start_time)
|
|
return HTTPMethodNotAllowed(request=req)
|
|
account_partition, accounts = \
|
|
self.app.account_ring.get_nodes(self.account_name)
|
|
headers = {'X-Timestamp': normalize_timestamp(time.time()),
|
|
'X-Trans-Id': self.trans_id,
|
|
'Connection': 'close'}
|
|
if self.app.memcache:
|
|
self.app.memcache.delete('account%s' % req.path_info.rstrip('/'))
|
|
resp = self.make_requests(req, self.app.account_ring,
|
|
account_partition, 'DELETE', req.path_info,
|
|
[headers] * len(accounts))
|
|
self.app.logger.timing_since('DELETE.timing', start_time)
|
|
return resp
|
|
|
|
|
|
class BaseApplication(object):
|
|
"""Base WSGI application for the proxy server"""
|
|
|
|
def __init__(self, conf, memcache=None, logger=None, account_ring=None,
|
|
container_ring=None, object_ring=None):
|
|
if conf is None:
|
|
conf = {}
|
|
if logger is None:
|
|
self.logger = get_logger(conf, log_route='proxy-server')
|
|
access_log_conf = {}
|
|
for key in ('log_facility', 'log_name', 'log_level'):
|
|
value = conf.get('access_' + key, conf.get(key, None))
|
|
if value:
|
|
access_log_conf[key] = value
|
|
self.access_logger = get_logger(access_log_conf,
|
|
log_route='proxy-access')
|
|
else:
|
|
self.logger = self.access_logger = logger
|
|
|
|
swift_dir = conf.get('swift_dir', '/etc/swift')
|
|
self.node_timeout = int(conf.get('node_timeout', 10))
|
|
self.conn_timeout = float(conf.get('conn_timeout', 0.5))
|
|
self.client_timeout = int(conf.get('client_timeout', 60))
|
|
self.put_queue_depth = int(conf.get('put_queue_depth', 10))
|
|
self.object_chunk_size = int(conf.get('object_chunk_size', 65536))
|
|
self.client_chunk_size = int(conf.get('client_chunk_size', 65536))
|
|
self.log_headers = conf.get('log_headers', 'no').lower() in TRUE_VALUES
|
|
self.error_suppression_interval = \
|
|
int(conf.get('error_suppression_interval', 60))
|
|
self.error_suppression_limit = \
|
|
int(conf.get('error_suppression_limit', 10))
|
|
self.recheck_container_existence = \
|
|
int(conf.get('recheck_container_existence', 60))
|
|
self.recheck_account_existence = \
|
|
int(conf.get('recheck_account_existence', 60))
|
|
self.allow_account_management = \
|
|
conf.get('allow_account_management', 'no').lower() in TRUE_VALUES
|
|
self.object_post_as_copy = \
|
|
conf.get('object_post_as_copy', 'true').lower() in TRUE_VALUES
|
|
self.resellers_conf = ConfigParser()
|
|
self.resellers_conf.read(os.path.join(swift_dir, 'resellers.conf'))
|
|
self.object_ring = object_ring or Ring(swift_dir, ring_name='object')
|
|
self.container_ring = container_ring or Ring(swift_dir,
|
|
ring_name='container')
|
|
self.account_ring = account_ring or Ring(swift_dir,
|
|
ring_name='account')
|
|
self.memcache = memcache
|
|
mimetypes.init(mimetypes.knownfiles +
|
|
[os.path.join(swift_dir, 'mime.types')])
|
|
self.account_autocreate = \
|
|
conf.get('account_autocreate', 'no').lower() in TRUE_VALUES
|
|
self.expiring_objects_account = \
|
|
(conf.get('auto_create_account_prefix') or '.') + \
|
|
'expiring_objects'
|
|
self.expiring_objects_container_divisor = \
|
|
int(conf.get('expiring_objects_container_divisor') or 86400)
|
|
self.max_containers_per_account = \
|
|
int(conf.get('max_containers_per_account') or 0)
|
|
self.max_containers_whitelist = [a.strip()
|
|
for a in conf.get('max_containers_whitelist', '').split(',')
|
|
if a.strip()]
|
|
self.deny_host_headers = [host.strip() for host in
|
|
conf.get('deny_host_headers', '').split(',') if host.strip()]
|
|
self.rate_limit_after_segment = \
|
|
int(conf.get('rate_limit_after_segment', 10))
|
|
self.rate_limit_segments_per_sec = \
|
|
int(conf.get('rate_limit_segments_per_sec', 1))
|
|
|
|
def get_controller(self, path):
|
|
"""
|
|
Get the controller to handle a request.
|
|
|
|
:param path: path from request
|
|
:returns: tuple of (controller class, path dictionary)
|
|
|
|
:raises: ValueError (thrown by split_path) if given invalid path
|
|
"""
|
|
version, account, container, obj = split_path(path, 1, 4, True)
|
|
d = dict(version=version,
|
|
account_name=account,
|
|
container_name=container,
|
|
object_name=obj)
|
|
if obj and container and account:
|
|
return ObjectController, d
|
|
elif container and account:
|
|
return ContainerController, d
|
|
elif account and not container and not obj:
|
|
return AccountController, d
|
|
return None, d
|
|
|
|
def __call__(self, env, start_response):
|
|
"""
|
|
WSGI entry point.
|
|
Wraps env in webob.Request object and passes it down.
|
|
|
|
:param env: WSGI environment dictionary
|
|
:param start_response: WSGI callable
|
|
"""
|
|
try:
|
|
if self.memcache is None:
|
|
self.memcache = cache_from_env(env)
|
|
req = self.update_request(Request(env))
|
|
return self.handle_request(req)(env, start_response)
|
|
except (Exception, Timeout):
|
|
print "EXCEPTION IN __call__: %s: %s" % \
|
|
(traceback.format_exc(), env)
|
|
start_response('500 Server Error',
|
|
[('Content-Type', 'text/plain')])
|
|
return ['Internal server error.\n']
|
|
|
|
def update_request(self, req):
|
|
if 'x-storage-token' in req.headers and \
|
|
'x-auth-token' not in req.headers:
|
|
req.headers['x-auth-token'] = req.headers['x-storage-token']
|
|
return req
|
|
|
|
def handle_request(self, req):
|
|
"""
|
|
Entry point for proxy server.
|
|
Should return a WSGI-style callable (such as webob.Response).
|
|
|
|
:param req: webob.Request object
|
|
"""
|
|
try:
|
|
self.logger.set_statsd_prefix('proxy-server')
|
|
if req.content_length and req.content_length < 0:
|
|
self.logger.increment('errors')
|
|
return HTTPBadRequest(request=req,
|
|
body='Invalid Content-Length')
|
|
try:
|
|
controller, path_parts = self.get_controller(req.path)
|
|
except ValueError:
|
|
self.logger.increment('errors')
|
|
return HTTPNotFound(request=req)
|
|
if not check_utf8(req.path_info):
|
|
self.logger.increment('errors')
|
|
return HTTPPreconditionFailed(request=req, body='Invalid UTF8')
|
|
if not controller:
|
|
self.logger.increment('errors')
|
|
return HTTPPreconditionFailed(request=req, body='Bad URL')
|
|
if self.deny_host_headers and \
|
|
req.host.split(':')[0] in self.deny_host_headers:
|
|
return HTTPForbidden(request=req, body='Invalid host header')
|
|
|
|
self.logger.set_statsd_prefix('proxy-server.' +
|
|
controller.server_type)
|
|
controller = controller(self, **path_parts)
|
|
if 'swift.trans_id' not in req.environ:
|
|
# if this wasn't set by an earlier middleware, set it now
|
|
trans_id = 'tx' + uuid.uuid4().hex
|
|
req.environ['swift.trans_id'] = trans_id
|
|
self.logger.txn_id = trans_id
|
|
req.headers['x-trans-id'] = req.environ['swift.trans_id']
|
|
controller.trans_id = req.environ['swift.trans_id']
|
|
self.logger.client_ip = get_remote_client(req)
|
|
try:
|
|
handler = getattr(controller, req.method)
|
|
getattr(handler, 'publicly_accessible')
|
|
except AttributeError:
|
|
self.logger.increment('method_not_allowed')
|
|
return HTTPMethodNotAllowed(request=req)
|
|
if path_parts['version']:
|
|
req.path_info_pop()
|
|
if 'swift.authorize' in req.environ:
|
|
# We call authorize before the handler, always. If authorized,
|
|
# we remove the swift.authorize hook so isn't ever called
|
|
# again. If not authorized, we return the denial unless the
|
|
# controller's method indicates it'd like to gather more
|
|
# information and try again later.
|
|
resp = req.environ['swift.authorize'](req)
|
|
if not resp:
|
|
# No resp means authorized, no delayed recheck required.
|
|
del req.environ['swift.authorize']
|
|
else:
|
|
# Response indicates denial, but we might delay the denial
|
|
# and recheck later. If not delayed, return the error now.
|
|
if not getattr(handler, 'delay_denial', None):
|
|
self.logger.increment('auth_short_circuits')
|
|
return resp
|
|
return handler(req)
|
|
except (Exception, Timeout):
|
|
self.logger.exception(_('ERROR Unhandled exception in request'))
|
|
return HTTPServerError(request=req)
|
|
|
|
|
|
class Application(BaseApplication):
|
|
"""WSGI application for the proxy server."""
|
|
|
|
def handle_request(self, req):
|
|
"""
|
|
Wraps the BaseApplication.handle_request and logs the request.
|
|
"""
|
|
req.start_time = time.time()
|
|
req.response = super(Application, self).handle_request(req)
|
|
return req.response
|
|
|
|
|
|
def app_factory(global_conf, **local_conf):
|
|
"""paste.deploy app factory for creating WSGI proxy apps."""
|
|
conf = global_conf.copy()
|
|
conf.update(local_conf)
|
|
return Application(conf)
|