971 lines
42 KiB
Python
971 lines
42 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.
|
|
|
|
""" Object Server for Swift """
|
|
|
|
from __future__ import with_statement
|
|
import cPickle as pickle
|
|
import errno
|
|
import os
|
|
import time
|
|
import traceback
|
|
from datetime import datetime
|
|
from hashlib import md5
|
|
from tempfile import mkstemp
|
|
from urllib import unquote
|
|
from contextlib import contextmanager
|
|
|
|
from xattr import getxattr, setxattr
|
|
from eventlet import sleep, Timeout, tpool
|
|
|
|
from swift.common.utils import mkdirs, normalize_timestamp, public, \
|
|
storage_directory, hash_path, renamer, fallocate, fsync, fdatasync, \
|
|
split_path, drop_buffer_cache, get_logger, write_pickle, \
|
|
config_true_value, validate_device_partition, timing_stats
|
|
from swift.common.bufferedhttp import http_connect
|
|
from swift.common.constraints import check_object_creation, check_mount, \
|
|
check_float, check_utf8
|
|
from swift.common.exceptions import ConnectionTimeout, DiskFileError, \
|
|
DiskFileNotExist
|
|
from swift.obj.replicator import tpool_reraise, invalidate_hash, \
|
|
quarantine_renamer, get_hashes
|
|
from swift.common.http import is_success
|
|
from swift.common.swob import HTTPAccepted, HTTPBadRequest, HTTPCreated, \
|
|
HTTPInternalServerError, HTTPNoContent, HTTPNotFound, HTTPNotModified, \
|
|
HTTPPreconditionFailed, HTTPRequestTimeout, HTTPUnprocessableEntity, \
|
|
HTTPClientDisconnect, HTTPMethodNotAllowed, Request, Response, UTC, \
|
|
HTTPInsufficientStorage, multi_range_iterator, HTTPConflict
|
|
|
|
|
|
DATADIR = 'objects'
|
|
ASYNCDIR = 'async_pending'
|
|
PICKLE_PROTOCOL = 2
|
|
METADATA_KEY = 'user.swift.metadata'
|
|
MAX_OBJECT_NAME_LENGTH = 1024
|
|
# keep these lower-case
|
|
DISALLOWED_HEADERS = set('content-length content-type deleted etag'.split())
|
|
|
|
|
|
def read_metadata(fd):
|
|
"""
|
|
Helper function to read the pickled metadata from an object file.
|
|
|
|
:param fd: file descriptor to load the metadata from
|
|
|
|
:returns: dictionary of metadata
|
|
"""
|
|
metadata = ''
|
|
key = 0
|
|
try:
|
|
while True:
|
|
metadata += getxattr(fd, '%s%s' % (METADATA_KEY, (key or '')))
|
|
key += 1
|
|
except IOError:
|
|
pass
|
|
return pickle.loads(metadata)
|
|
|
|
|
|
def write_metadata(fd, metadata):
|
|
"""
|
|
Helper function to write pickled metadata for an object file.
|
|
|
|
:param fd: file descriptor to write the metadata
|
|
:param metadata: metadata to write
|
|
"""
|
|
metastr = pickle.dumps(metadata, PICKLE_PROTOCOL)
|
|
key = 0
|
|
while metastr:
|
|
setxattr(fd, '%s%s' % (METADATA_KEY, key or ''), metastr[:254])
|
|
metastr = metastr[254:]
|
|
key += 1
|
|
|
|
|
|
class DiskFile(object):
|
|
"""
|
|
Manage object files on disk.
|
|
|
|
:param path: path to devices on the node
|
|
:param device: device name
|
|
:param partition: partition on the device the object lives in
|
|
:param account: account name for the object
|
|
:param container: container name for the object
|
|
:param obj: object name for the object
|
|
:param keep_data_fp: if True, don't close the fp, otherwise close it
|
|
:param disk_chunk_size: size of chunks on file reads
|
|
:param iter_hook: called when __iter__ returns a chunk
|
|
"""
|
|
|
|
def __init__(self, path, device, partition, account, container, obj,
|
|
logger, keep_data_fp=False, disk_chunk_size=65536,
|
|
iter_hook=None):
|
|
self.disk_chunk_size = disk_chunk_size
|
|
self.iter_hook = iter_hook
|
|
self.name = '/' + '/'.join((account, container, obj))
|
|
name_hash = hash_path(account, container, obj)
|
|
self.datadir = os.path.join(
|
|
path, device, storage_directory(DATADIR, partition, name_hash))
|
|
self.device_path = os.path.join(path, device)
|
|
self.tmpdir = os.path.join(path, device, 'tmp')
|
|
self.tmppath = None
|
|
self.logger = logger
|
|
self.metadata = {}
|
|
self.data_file = None
|
|
self.fp = None
|
|
self.iter_etag = None
|
|
self.started_at_0 = False
|
|
self.read_to_eof = False
|
|
self.quarantined_dir = None
|
|
self.keep_cache = False
|
|
self.suppress_file_closing = False
|
|
if not os.path.exists(self.datadir):
|
|
return
|
|
files = sorted(os.listdir(self.datadir), reverse=True)
|
|
meta_file = None
|
|
for afile in files:
|
|
if afile.endswith('.ts'):
|
|
self.data_file = None
|
|
with open(os.path.join(self.datadir, afile)) as mfp:
|
|
self.metadata = read_metadata(mfp)
|
|
self.metadata['deleted'] = True
|
|
break
|
|
if afile.endswith('.meta') and not meta_file:
|
|
meta_file = os.path.join(self.datadir, afile)
|
|
if afile.endswith('.data') and not self.data_file:
|
|
self.data_file = os.path.join(self.datadir, afile)
|
|
break
|
|
if not self.data_file:
|
|
return
|
|
self.fp = open(self.data_file, 'rb')
|
|
self.metadata = read_metadata(self.fp)
|
|
if not keep_data_fp:
|
|
self.close(verify_file=False)
|
|
if meta_file:
|
|
with open(meta_file) as mfp:
|
|
for key in self.metadata.keys():
|
|
if key.lower() not in DISALLOWED_HEADERS:
|
|
del self.metadata[key]
|
|
self.metadata.update(read_metadata(mfp))
|
|
|
|
def __iter__(self):
|
|
"""Returns an iterator over the data file."""
|
|
try:
|
|
dropped_cache = 0
|
|
read = 0
|
|
self.started_at_0 = False
|
|
self.read_to_eof = False
|
|
if self.fp.tell() == 0:
|
|
self.started_at_0 = True
|
|
self.iter_etag = md5()
|
|
while True:
|
|
chunk = self.fp.read(self.disk_chunk_size)
|
|
if chunk:
|
|
if self.iter_etag:
|
|
self.iter_etag.update(chunk)
|
|
read += len(chunk)
|
|
if read - dropped_cache > (1024 * 1024):
|
|
self.drop_cache(self.fp.fileno(), dropped_cache,
|
|
read - dropped_cache)
|
|
dropped_cache = read
|
|
yield chunk
|
|
if self.iter_hook:
|
|
self.iter_hook()
|
|
else:
|
|
self.read_to_eof = True
|
|
self.drop_cache(self.fp.fileno(), dropped_cache,
|
|
read - dropped_cache)
|
|
break
|
|
finally:
|
|
if not self.suppress_file_closing:
|
|
self.close()
|
|
|
|
def app_iter_range(self, start, stop):
|
|
"""Returns an iterator over the data file for range (start, stop)"""
|
|
if start or start == 0:
|
|
self.fp.seek(start)
|
|
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
|
|
|
|
def app_iter_ranges(self, ranges, content_type, boundary, size):
|
|
"""Returns an iterator over the data file for a set of ranges"""
|
|
if not ranges:
|
|
yield ''
|
|
else:
|
|
try:
|
|
self.suppress_file_closing = True
|
|
for chunk in multi_range_iterator(
|
|
ranges, content_type, boundary, size,
|
|
self.app_iter_range):
|
|
yield chunk
|
|
finally:
|
|
self.suppress_file_closing = False
|
|
self.close()
|
|
|
|
def _handle_close_quarantine(self):
|
|
"""Check if file needs to be quarantined"""
|
|
try:
|
|
self.get_data_file_size()
|
|
except DiskFileError:
|
|
self.quarantine()
|
|
return
|
|
except DiskFileNotExist:
|
|
return
|
|
|
|
if self.iter_etag and self.started_at_0 and self.read_to_eof and \
|
|
'ETag' in self.metadata and \
|
|
self.iter_etag.hexdigest() != self.metadata.get('ETag'):
|
|
self.quarantine()
|
|
|
|
def close(self, verify_file=True):
|
|
"""
|
|
Close the file. Will handle quarantining file if necessary.
|
|
|
|
:param verify_file: Defaults to True. If false, will not check
|
|
file to see if it needs quarantining.
|
|
"""
|
|
if self.fp:
|
|
try:
|
|
if verify_file:
|
|
self._handle_close_quarantine()
|
|
except (Exception, Timeout), e:
|
|
self.logger.error(_(
|
|
'ERROR DiskFile %(data_file)s in '
|
|
'%(data_dir)s close failure: %(exc)s : %(stack)'),
|
|
{'exc': e, 'stack': ''.join(traceback.format_stack()),
|
|
'data_file': self.data_file, 'data_dir': self.datadir})
|
|
finally:
|
|
self.fp.close()
|
|
self.fp = None
|
|
|
|
def is_deleted(self):
|
|
"""
|
|
Check if the file is deleted.
|
|
|
|
:returns: True if the file doesn't exist or has been flagged as
|
|
deleted.
|
|
"""
|
|
return not self.data_file or 'deleted' in self.metadata
|
|
|
|
def is_expired(self):
|
|
"""
|
|
Check if the file is expired.
|
|
|
|
:returns: True if the file has an X-Delete-At in the past
|
|
"""
|
|
return ('X-Delete-At' in self.metadata and
|
|
int(self.metadata['X-Delete-At']) <= time.time())
|
|
|
|
@contextmanager
|
|
def mkstemp(self):
|
|
"""Contextmanager to make a temporary file."""
|
|
if not os.path.exists(self.tmpdir):
|
|
mkdirs(self.tmpdir)
|
|
fd, self.tmppath = mkstemp(dir=self.tmpdir)
|
|
try:
|
|
yield fd
|
|
finally:
|
|
try:
|
|
os.close(fd)
|
|
except OSError:
|
|
pass
|
|
tmppath, self.tmppath = self.tmppath, None
|
|
try:
|
|
os.unlink(tmppath)
|
|
except OSError:
|
|
pass
|
|
|
|
def put(self, fd, metadata, extension='.data'):
|
|
"""
|
|
Finalize writing the file on disk, and renames it from the temp file to
|
|
the real location. This should be called after the data has been
|
|
written to the temp file.
|
|
|
|
:param fd: file descriptor of the temp file
|
|
:param metadata: dictionary of metadata to be written
|
|
:param extension: extension to be used when making the file
|
|
"""
|
|
assert self.tmppath is not None
|
|
metadata['name'] = self.name
|
|
timestamp = normalize_timestamp(metadata['X-Timestamp'])
|
|
write_metadata(fd, metadata)
|
|
if 'Content-Length' in metadata:
|
|
self.drop_cache(fd, 0, int(metadata['Content-Length']))
|
|
tpool.execute(fsync, fd)
|
|
invalidate_hash(os.path.dirname(self.datadir))
|
|
renamer(self.tmppath,
|
|
os.path.join(self.datadir, timestamp + extension))
|
|
self.metadata = metadata
|
|
|
|
def put_metadata(self, metadata, tombstone=False):
|
|
"""
|
|
Short hand for putting metadata to .meta and .ts files.
|
|
|
|
:param metadata: dictionary of metadata to be written
|
|
:param tombstone: whether or not we are writing a tombstone
|
|
"""
|
|
extension = '.ts' if tombstone else '.meta'
|
|
with self.mkstemp() as fd:
|
|
self.put(fd, metadata, extension=extension)
|
|
|
|
def unlinkold(self, timestamp):
|
|
"""
|
|
Remove any older versions of the object file. Any file that has an
|
|
older timestamp than timestamp will be deleted.
|
|
|
|
:param timestamp: timestamp to compare with each file
|
|
"""
|
|
timestamp = normalize_timestamp(timestamp)
|
|
for fname in os.listdir(self.datadir):
|
|
if fname < timestamp:
|
|
try:
|
|
os.unlink(os.path.join(self.datadir, fname))
|
|
except OSError, err: # pragma: no cover
|
|
if err.errno != errno.ENOENT:
|
|
raise
|
|
|
|
def drop_cache(self, fd, offset, length):
|
|
"""Method for no-oping buffer cache drop method."""
|
|
if not self.keep_cache:
|
|
drop_buffer_cache(fd, offset, length)
|
|
|
|
def quarantine(self):
|
|
"""
|
|
In the case that a file is corrupted, move it to a quarantined
|
|
area to allow replication to fix it.
|
|
|
|
:returns: if quarantine is successful, path to quarantined
|
|
directory otherwise None
|
|
"""
|
|
if not (self.is_deleted() or self.quarantined_dir):
|
|
self.quarantined_dir = quarantine_renamer(self.device_path,
|
|
self.data_file)
|
|
self.logger.increment('quarantines')
|
|
return self.quarantined_dir
|
|
|
|
def get_data_file_size(self):
|
|
"""
|
|
Returns the os.path.getsize for the file. Raises an exception if this
|
|
file does not match the Content-Length stored in the metadata. Or if
|
|
self.data_file does not exist.
|
|
|
|
:returns: file size as an int
|
|
:raises DiskFileError: on file size mismatch.
|
|
:raises DiskFileNotExist: on file not existing (including deleted)
|
|
"""
|
|
try:
|
|
file_size = 0
|
|
if self.data_file:
|
|
file_size = os.path.getsize(self.data_file)
|
|
if 'Content-Length' in self.metadata:
|
|
metadata_size = int(self.metadata['Content-Length'])
|
|
if file_size != metadata_size:
|
|
raise DiskFileError(
|
|
'Content-Length of %s does not match file size '
|
|
'of %s' % (metadata_size, file_size))
|
|
return file_size
|
|
except OSError, err:
|
|
if err.errno != errno.ENOENT:
|
|
raise
|
|
raise DiskFileNotExist('Data File does not exist.')
|
|
|
|
|
|
class ObjectController(object):
|
|
"""Implements the WSGI application for the Swift Object Server."""
|
|
|
|
def __init__(self, conf):
|
|
"""
|
|
Creates a new WSGI application for the Swift Object Server. An
|
|
example configuration is given at
|
|
<source-dir>/etc/object-server.conf-sample or
|
|
/etc/swift/object-server.conf-sample.
|
|
"""
|
|
self.logger = get_logger(conf, log_route='object-server')
|
|
self.devices = conf.get('devices', '/srv/node/')
|
|
self.mount_check = config_true_value(conf.get('mount_check', 'true'))
|
|
self.node_timeout = int(conf.get('node_timeout', 3))
|
|
self.conn_timeout = float(conf.get('conn_timeout', 0.5))
|
|
self.disk_chunk_size = int(conf.get('disk_chunk_size', 65536))
|
|
self.network_chunk_size = int(conf.get('network_chunk_size', 65536))
|
|
self.keep_cache_size = int(conf.get('keep_cache_size', 5242880))
|
|
self.keep_cache_private = \
|
|
config_true_value(conf.get('keep_cache_private', 'false'))
|
|
self.log_requests = config_true_value(conf.get('log_requests', 'true'))
|
|
self.max_upload_time = int(conf.get('max_upload_time', 86400))
|
|
self.slow = int(conf.get('slow', 0))
|
|
self.bytes_per_sync = int(conf.get('mb_per_sync', 512)) * 1024 * 1024
|
|
default_allowed_headers = '''
|
|
content-disposition,
|
|
content-encoding,
|
|
x-delete-at,
|
|
x-object-manifest,
|
|
x-static-large-object,
|
|
'''
|
|
self.allowed_headers = set(
|
|
i.strip().lower() for i in
|
|
conf.get('allowed_headers', default_allowed_headers).split(',')
|
|
if i.strip() and i.strip().lower() not in DISALLOWED_HEADERS)
|
|
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)
|
|
|
|
def async_update(self, op, account, container, obj, host, partition,
|
|
contdevice, headers_out, objdevice):
|
|
"""
|
|
Sends or saves an async update.
|
|
|
|
:param op: operation performed (ex: 'PUT', or 'DELETE')
|
|
:param account: account name for the object
|
|
:param container: container name for the object
|
|
:param obj: object name
|
|
:param host: host that the container is on
|
|
:param partition: partition that the container is on
|
|
:param contdevice: device name that the container is on
|
|
:param headers_out: dictionary of headers to send in the container
|
|
request
|
|
:param objdevice: device name that the object is in
|
|
"""
|
|
full_path = '/%s/%s/%s' % (account, container, obj)
|
|
if all([host, partition, contdevice]):
|
|
try:
|
|
with ConnectionTimeout(self.conn_timeout):
|
|
ip, port = host.rsplit(':', 1)
|
|
conn = http_connect(ip, port, contdevice, partition, op,
|
|
full_path, headers_out)
|
|
with Timeout(self.node_timeout):
|
|
response = conn.getresponse()
|
|
response.read()
|
|
if is_success(response.status):
|
|
return
|
|
else:
|
|
self.logger.error(_(
|
|
'ERROR Container update failed '
|
|
'(saving for async update later): %(status)d '
|
|
'response from %(ip)s:%(port)s/%(dev)s'),
|
|
{'status': response.status, 'ip': ip, 'port': port,
|
|
'dev': contdevice})
|
|
except (Exception, Timeout):
|
|
self.logger.exception(_(
|
|
'ERROR container update failed with '
|
|
'%(ip)s:%(port)s/%(dev)s (saving for async update later)'),
|
|
{'ip': ip, 'port': port, 'dev': contdevice})
|
|
async_dir = os.path.join(self.devices, objdevice, ASYNCDIR)
|
|
ohash = hash_path(account, container, obj)
|
|
self.logger.increment('async_pendings')
|
|
write_pickle(
|
|
{'op': op, 'account': account, 'container': container,
|
|
'obj': obj, 'headers': headers_out},
|
|
os.path.join(async_dir, ohash[-3:], ohash + '-' +
|
|
normalize_timestamp(headers_out['x-timestamp'])),
|
|
os.path.join(self.devices, objdevice, 'tmp'))
|
|
|
|
def container_update(self, op, account, container, obj, headers_in,
|
|
headers_out, objdevice):
|
|
"""
|
|
Update the container when objects are updated.
|
|
|
|
:param op: operation performed (ex: 'PUT', or 'DELETE')
|
|
:param account: account name for the object
|
|
:param container: container name for the object
|
|
:param obj: object name
|
|
:param headers_in: dictionary of headers from the original request
|
|
:param headers_out: dictionary of headers to send in the container
|
|
request(s)
|
|
:param objdevice: device name that the object is in
|
|
"""
|
|
conthosts = [h.strip() for h in
|
|
headers_in.get('X-Container-Host', '').split(',')]
|
|
contdevices = [d.strip() for d in
|
|
headers_in.get('X-Container-Device', '').split(',')]
|
|
contpartition = headers_in.get('X-Container-Partition', '')
|
|
|
|
if len(conthosts) != len(contdevices):
|
|
# This shouldn't happen unless there's a bug in the proxy,
|
|
# but if there is, we want to know about it.
|
|
self.logger.error(_('ERROR Container update failed: different '
|
|
'numbers of hosts and devices in request: '
|
|
'"%s" vs "%s"' %
|
|
(headers_in.get('X-Container-Host', ''),
|
|
headers_in.get('X-Container-Device', ''))))
|
|
return
|
|
|
|
if contpartition:
|
|
updates = zip(conthosts, contdevices)
|
|
else:
|
|
updates = []
|
|
|
|
for conthost, contdevice in updates:
|
|
self.async_update(op, account, container, obj, conthost,
|
|
contpartition, contdevice, headers_out,
|
|
objdevice)
|
|
|
|
def delete_at_update(self, op, delete_at, account, container, obj,
|
|
headers_in, objdevice):
|
|
"""
|
|
Update the expiring objects container when objects are updated.
|
|
|
|
:param op: operation performed (ex: 'PUT', or 'DELETE')
|
|
:param account: account name for the object
|
|
:param container: container name for the object
|
|
:param obj: object name
|
|
:param headers_in: dictionary of headers from the original request
|
|
:param objdevice: device name that the object is in
|
|
"""
|
|
# Quick cap that will work from now until Sat Nov 20 17:46:39 2286
|
|
# At that time, Swift will be so popular and pervasive I will have
|
|
# created income for thousands of future programmers.
|
|
delete_at = max(min(delete_at, 9999999999), 0)
|
|
updates = [(None, None)]
|
|
|
|
partition = None
|
|
hosts = contdevices = [None]
|
|
headers_out = {'x-timestamp': headers_in['x-timestamp'],
|
|
'x-trans-id': headers_in.get('x-trans-id', '-')}
|
|
if op != 'DELETE':
|
|
partition = headers_in.get('X-Delete-At-Partition', None)
|
|
hosts = headers_in.get('X-Delete-At-Host', '')
|
|
contdevices = headers_in.get('X-Delete-At-Device', '')
|
|
updates = [upd for upd in
|
|
zip((h.strip() for h in hosts.split(',')),
|
|
(c.strip() for c in contdevices.split(',')))
|
|
if all(upd) and partition]
|
|
if not updates:
|
|
updates = [(None, None)]
|
|
headers_out['x-size'] = '0'
|
|
headers_out['x-content-type'] = 'text/plain'
|
|
headers_out['x-etag'] = 'd41d8cd98f00b204e9800998ecf8427e'
|
|
|
|
for host, contdevice in updates:
|
|
self.async_update(
|
|
op, self.expiring_objects_account,
|
|
str(delete_at / self.expiring_objects_container_divisor *
|
|
self.expiring_objects_container_divisor),
|
|
'%s-%s/%s/%s' % (delete_at, account, container, obj),
|
|
host, partition, contdevice, headers_out, objdevice)
|
|
|
|
@public
|
|
@timing_stats()
|
|
def POST(self, request):
|
|
"""Handle HTTP POST requests for the Swift Object Server."""
|
|
try:
|
|
device, partition, account, container, obj = \
|
|
split_path(unquote(request.path), 5, 5, True)
|
|
validate_device_partition(device, partition)
|
|
except ValueError, err:
|
|
return HTTPBadRequest(body=str(err), request=request,
|
|
content_type='text/plain')
|
|
if 'x-timestamp' not in request.headers or \
|
|
not check_float(request.headers['x-timestamp']):
|
|
return HTTPBadRequest(body='Missing timestamp', request=request,
|
|
content_type='text/plain')
|
|
new_delete_at = int(request.headers.get('X-Delete-At') or 0)
|
|
if new_delete_at and new_delete_at < time.time():
|
|
return HTTPBadRequest(body='X-Delete-At in past', request=request,
|
|
content_type='text/plain')
|
|
if self.mount_check and not check_mount(self.devices, device):
|
|
return HTTPInsufficientStorage(drive=device, request=request)
|
|
file = DiskFile(self.devices, device, partition, account, container,
|
|
obj, self.logger, disk_chunk_size=self.disk_chunk_size)
|
|
|
|
if file.is_deleted() or file.is_expired():
|
|
return HTTPNotFound(request=request)
|
|
try:
|
|
file.get_data_file_size()
|
|
except (DiskFileError, DiskFileNotExist):
|
|
file.quarantine()
|
|
return HTTPNotFound(request=request)
|
|
orig_timestamp = file.metadata.get('X-Timestamp', '0')
|
|
if orig_timestamp >= request.headers['x-timestamp']:
|
|
return HTTPConflict(request=request)
|
|
metadata = {'X-Timestamp': request.headers['x-timestamp']}
|
|
metadata.update(val for val in request.headers.iteritems()
|
|
if val[0].lower().startswith('x-object-meta-'))
|
|
for header_key in self.allowed_headers:
|
|
if header_key in request.headers:
|
|
header_caps = header_key.title()
|
|
metadata[header_caps] = request.headers[header_key]
|
|
old_delete_at = int(file.metadata.get('X-Delete-At') or 0)
|
|
if old_delete_at != new_delete_at:
|
|
if new_delete_at:
|
|
self.delete_at_update('PUT', new_delete_at, account, container,
|
|
obj, request.headers, device)
|
|
if old_delete_at:
|
|
self.delete_at_update('DELETE', old_delete_at, account,
|
|
container, obj, request.headers, device)
|
|
file.put_metadata(metadata)
|
|
return HTTPAccepted(request=request)
|
|
|
|
@public
|
|
@timing_stats()
|
|
def PUT(self, request):
|
|
"""Handle HTTP PUT requests for the Swift Object Server."""
|
|
try:
|
|
device, partition, account, container, obj = \
|
|
split_path(unquote(request.path), 5, 5, True)
|
|
validate_device_partition(device, partition)
|
|
except ValueError, err:
|
|
return HTTPBadRequest(body=str(err), request=request,
|
|
content_type='text/plain')
|
|
if self.mount_check and not check_mount(self.devices, device):
|
|
return HTTPInsufficientStorage(drive=device, request=request)
|
|
if 'x-timestamp' not in request.headers or \
|
|
not check_float(request.headers['x-timestamp']):
|
|
return HTTPBadRequest(body='Missing timestamp', request=request,
|
|
content_type='text/plain')
|
|
error_response = check_object_creation(request, obj)
|
|
if error_response:
|
|
return error_response
|
|
new_delete_at = int(request.headers.get('X-Delete-At') or 0)
|
|
if new_delete_at and new_delete_at < time.time():
|
|
return HTTPBadRequest(body='X-Delete-At in past', request=request,
|
|
content_type='text/plain')
|
|
file = DiskFile(self.devices, device, partition, account, container,
|
|
obj, self.logger, disk_chunk_size=self.disk_chunk_size)
|
|
orig_timestamp = file.metadata.get('X-Timestamp')
|
|
if orig_timestamp and orig_timestamp >= request.headers['x-timestamp']:
|
|
return HTTPConflict(request=request)
|
|
upload_expiration = time.time() + self.max_upload_time
|
|
etag = md5()
|
|
upload_size = 0
|
|
last_sync = 0
|
|
elapsed_time = 0
|
|
with file.mkstemp() as fd:
|
|
try:
|
|
fallocate(fd, int(request.headers.get('content-length', 0)))
|
|
except OSError:
|
|
return HTTPInsufficientStorage(drive=device, request=request)
|
|
reader = request.environ['wsgi.input'].read
|
|
for chunk in iter(lambda: reader(self.network_chunk_size), ''):
|
|
start_time = time.time()
|
|
upload_size += len(chunk)
|
|
if time.time() > upload_expiration:
|
|
self.logger.increment('PUT.timeouts')
|
|
return HTTPRequestTimeout(request=request)
|
|
etag.update(chunk)
|
|
while chunk:
|
|
written = os.write(fd, chunk)
|
|
chunk = chunk[written:]
|
|
# For large files sync every 512MB (by default) written
|
|
if upload_size - last_sync >= self.bytes_per_sync:
|
|
tpool.execute(fdatasync, fd)
|
|
drop_buffer_cache(fd, last_sync, upload_size - last_sync)
|
|
last_sync = upload_size
|
|
sleep()
|
|
elapsed_time += time.time() - start_time
|
|
|
|
if upload_size:
|
|
self.logger.transfer_rate(
|
|
'PUT.' + device + '.timing', elapsed_time, upload_size)
|
|
|
|
if 'content-length' in request.headers and \
|
|
int(request.headers['content-length']) != upload_size:
|
|
return HTTPClientDisconnect(request=request)
|
|
etag = etag.hexdigest()
|
|
if 'etag' in request.headers and \
|
|
request.headers['etag'].lower() != etag:
|
|
return HTTPUnprocessableEntity(request=request)
|
|
metadata = {
|
|
'X-Timestamp': request.headers['x-timestamp'],
|
|
'Content-Type': request.headers['content-type'],
|
|
'ETag': etag,
|
|
'Content-Length': str(upload_size),
|
|
}
|
|
metadata.update(val for val in request.headers.iteritems()
|
|
if val[0].lower().startswith('x-object-meta-') and
|
|
len(val[0]) > 14)
|
|
for header_key in self.allowed_headers:
|
|
if header_key in request.headers:
|
|
header_caps = header_key.title()
|
|
metadata[header_caps] = request.headers[header_key]
|
|
old_delete_at = int(file.metadata.get('X-Delete-At') or 0)
|
|
if old_delete_at != new_delete_at:
|
|
if new_delete_at:
|
|
self.delete_at_update(
|
|
'PUT', new_delete_at, account, container, obj,
|
|
request.headers, device)
|
|
if old_delete_at:
|
|
self.delete_at_update(
|
|
'DELETE', old_delete_at, account, container, obj,
|
|
request.headers, device)
|
|
file.put(fd, metadata)
|
|
file.unlinkold(metadata['X-Timestamp'])
|
|
if not orig_timestamp or \
|
|
orig_timestamp < request.headers['x-timestamp']:
|
|
self.container_update(
|
|
'PUT', account, container, obj, request.headers,
|
|
{'x-size': file.metadata['Content-Length'],
|
|
'x-content-type': file.metadata['Content-Type'],
|
|
'x-timestamp': file.metadata['X-Timestamp'],
|
|
'x-etag': file.metadata['ETag'],
|
|
'x-trans-id': request.headers.get('x-trans-id', '-')},
|
|
device)
|
|
resp = HTTPCreated(request=request, etag=etag)
|
|
return resp
|
|
|
|
@public
|
|
@timing_stats()
|
|
def GET(self, request):
|
|
"""Handle HTTP GET requests for the Swift Object Server."""
|
|
try:
|
|
device, partition, account, container, obj = \
|
|
split_path(unquote(request.path), 5, 5, True)
|
|
validate_device_partition(device, partition)
|
|
except ValueError, err:
|
|
return HTTPBadRequest(body=str(err), request=request,
|
|
content_type='text/plain')
|
|
if self.mount_check and not check_mount(self.devices, device):
|
|
return HTTPInsufficientStorage(drive=device, request=request)
|
|
file = DiskFile(self.devices, device, partition, account, container,
|
|
obj, self.logger, keep_data_fp=True,
|
|
disk_chunk_size=self.disk_chunk_size,
|
|
iter_hook=sleep)
|
|
if file.is_deleted() or file.is_expired():
|
|
if request.headers.get('if-match') == '*':
|
|
return HTTPPreconditionFailed(request=request)
|
|
else:
|
|
return HTTPNotFound(request=request)
|
|
try:
|
|
file_size = file.get_data_file_size()
|
|
except (DiskFileError, DiskFileNotExist):
|
|
file.quarantine()
|
|
return HTTPNotFound(request=request)
|
|
if request.headers.get('if-match') not in (None, '*') and \
|
|
file.metadata['ETag'] not in request.if_match:
|
|
file.close()
|
|
return HTTPPreconditionFailed(request=request)
|
|
if request.headers.get('if-none-match') is not None:
|
|
if file.metadata['ETag'] in request.if_none_match:
|
|
resp = HTTPNotModified(request=request)
|
|
resp.etag = file.metadata['ETag']
|
|
file.close()
|
|
return resp
|
|
try:
|
|
if_unmodified_since = request.if_unmodified_since
|
|
except (OverflowError, ValueError):
|
|
# catches timestamps before the epoch
|
|
return HTTPPreconditionFailed(request=request)
|
|
if if_unmodified_since and \
|
|
datetime.fromtimestamp(
|
|
float(file.metadata['X-Timestamp']), UTC) > \
|
|
if_unmodified_since:
|
|
file.close()
|
|
return HTTPPreconditionFailed(request=request)
|
|
try:
|
|
if_modified_since = request.if_modified_since
|
|
except (OverflowError, ValueError):
|
|
# catches timestamps before the epoch
|
|
return HTTPPreconditionFailed(request=request)
|
|
if if_modified_since and \
|
|
datetime.fromtimestamp(
|
|
float(file.metadata['X-Timestamp']), UTC) < \
|
|
if_modified_since:
|
|
file.close()
|
|
return HTTPNotModified(request=request)
|
|
response = Response(app_iter=file,
|
|
request=request, conditional_response=True)
|
|
response.headers['Content-Type'] = file.metadata.get(
|
|
'Content-Type', 'application/octet-stream')
|
|
for key, value in file.metadata.iteritems():
|
|
if key.lower().startswith('x-object-meta-') or \
|
|
key.lower() in self.allowed_headers:
|
|
response.headers[key] = value
|
|
response.etag = file.metadata['ETag']
|
|
response.last_modified = float(file.metadata['X-Timestamp'])
|
|
response.content_length = file_size
|
|
if response.content_length < self.keep_cache_size and \
|
|
(self.keep_cache_private or
|
|
('X-Auth-Token' not in request.headers and
|
|
'X-Storage-Token' not in request.headers)):
|
|
file.keep_cache = True
|
|
if 'Content-Encoding' in file.metadata:
|
|
response.content_encoding = file.metadata['Content-Encoding']
|
|
response.headers['X-Timestamp'] = file.metadata['X-Timestamp']
|
|
return request.get_response(response)
|
|
|
|
@public
|
|
@timing_stats(sample_rate=0.8)
|
|
def HEAD(self, request):
|
|
"""Handle HTTP HEAD requests for the Swift Object Server."""
|
|
try:
|
|
device, partition, account, container, obj = \
|
|
split_path(unquote(request.path), 5, 5, True)
|
|
validate_device_partition(device, partition)
|
|
except ValueError, err:
|
|
resp = HTTPBadRequest(request=request)
|
|
resp.content_type = 'text/plain'
|
|
resp.body = str(err)
|
|
return resp
|
|
if self.mount_check and not check_mount(self.devices, device):
|
|
return HTTPInsufficientStorage(drive=device, request=request)
|
|
file = DiskFile(self.devices, device, partition, account, container,
|
|
obj, self.logger, disk_chunk_size=self.disk_chunk_size)
|
|
if file.is_deleted() or file.is_expired():
|
|
return HTTPNotFound(request=request)
|
|
try:
|
|
file_size = file.get_data_file_size()
|
|
except (DiskFileError, DiskFileNotExist):
|
|
file.quarantine()
|
|
return HTTPNotFound(request=request)
|
|
response = Response(request=request, conditional_response=True)
|
|
response.headers['Content-Type'] = file.metadata.get(
|
|
'Content-Type', 'application/octet-stream')
|
|
for key, value in file.metadata.iteritems():
|
|
if key.lower().startswith('x-object-meta-') or \
|
|
key.lower() in self.allowed_headers:
|
|
response.headers[key] = value
|
|
response.etag = file.metadata['ETag']
|
|
response.last_modified = float(file.metadata['X-Timestamp'])
|
|
# Needed for container sync feature
|
|
response.headers['X-Timestamp'] = file.metadata['X-Timestamp']
|
|
response.content_length = file_size
|
|
if 'Content-Encoding' in file.metadata:
|
|
response.content_encoding = file.metadata['Content-Encoding']
|
|
return response
|
|
|
|
@public
|
|
@timing_stats()
|
|
def DELETE(self, request):
|
|
"""Handle HTTP DELETE requests for the Swift Object Server."""
|
|
try:
|
|
device, partition, account, container, obj = \
|
|
split_path(unquote(request.path), 5, 5, True)
|
|
validate_device_partition(device, partition)
|
|
except ValueError, e:
|
|
return HTTPBadRequest(body=str(e), request=request,
|
|
content_type='text/plain')
|
|
if 'x-timestamp' not in request.headers or \
|
|
not check_float(request.headers['x-timestamp']):
|
|
return HTTPBadRequest(body='Missing timestamp', request=request,
|
|
content_type='text/plain')
|
|
if self.mount_check and not check_mount(self.devices, device):
|
|
return HTTPInsufficientStorage(drive=device, request=request)
|
|
response_class = HTTPNoContent
|
|
file = DiskFile(self.devices, device, partition, account, container,
|
|
obj, self.logger, disk_chunk_size=self.disk_chunk_size)
|
|
if 'x-if-delete-at' in request.headers and \
|
|
int(request.headers['x-if-delete-at']) != \
|
|
int(file.metadata.get('X-Delete-At') or 0):
|
|
return HTTPPreconditionFailed(
|
|
request=request,
|
|
body='X-If-Delete-At and X-Delete-At do not match')
|
|
old_delete_at = int(file.metadata.get('X-Delete-At') or 0)
|
|
if old_delete_at:
|
|
self.delete_at_update('DELETE', old_delete_at, account,
|
|
container, obj, request.headers, device)
|
|
orig_timestamp = file.metadata.get('X-Timestamp', 0)
|
|
req_timestamp = request.headers['X-Timestamp']
|
|
if file.is_deleted() or file.is_expired():
|
|
response_class = HTTPNotFound
|
|
else:
|
|
if orig_timestamp < req_timestamp:
|
|
response_class = HTTPNoContent
|
|
else:
|
|
response_class = HTTPConflict
|
|
if orig_timestamp < req_timestamp:
|
|
file.put_metadata({'X-Timestamp': req_timestamp},
|
|
tombstone=True)
|
|
file.unlinkold(req_timestamp)
|
|
self.container_update(
|
|
'DELETE', account, container, obj, request.headers,
|
|
{'x-timestamp': req_timestamp,
|
|
'x-trans-id': request.headers.get('x-trans-id', '-')},
|
|
device)
|
|
resp = response_class(request=request)
|
|
return resp
|
|
|
|
@public
|
|
@timing_stats(sample_rate=0.1)
|
|
def REPLICATE(self, request):
|
|
"""
|
|
Handle REPLICATE requests for the Swift Object Server. This is used
|
|
by the object replicator to get hashes for directories.
|
|
"""
|
|
try:
|
|
device, partition, suffix = split_path(
|
|
unquote(request.path), 2, 3, True)
|
|
validate_device_partition(device, partition)
|
|
except ValueError, e:
|
|
return HTTPBadRequest(body=str(e), request=request,
|
|
content_type='text/plain')
|
|
if self.mount_check and not check_mount(self.devices, device):
|
|
return HTTPInsufficientStorage(drive=device, request=request)
|
|
path = os.path.join(self.devices, device, DATADIR, partition)
|
|
if not os.path.exists(path):
|
|
mkdirs(path)
|
|
suffixes = suffix.split('-') if suffix else []
|
|
_junk, hashes = tpool_reraise(get_hashes, path, recalculate=suffixes)
|
|
return Response(body=pickle.dumps(hashes))
|
|
|
|
def __call__(self, env, start_response):
|
|
"""WSGI Application entry point for the Swift Object Server."""
|
|
start_time = time.time()
|
|
req = Request(env)
|
|
self.logger.txn_id = req.headers.get('x-trans-id', None)
|
|
|
|
if not check_utf8(req.path_info):
|
|
res = HTTPPreconditionFailed(body='Invalid UTF8 or contains NULL')
|
|
else:
|
|
try:
|
|
# disallow methods which have not been marked 'public'
|
|
try:
|
|
method = getattr(self, req.method)
|
|
getattr(method, 'publicly_accessible')
|
|
except AttributeError:
|
|
res = HTTPMethodNotAllowed()
|
|
else:
|
|
res = method(req)
|
|
except (Exception, Timeout):
|
|
self.logger.exception(_(
|
|
'ERROR __call__ error with %(method)s'
|
|
' %(path)s '), {'method': req.method, 'path': req.path})
|
|
res = HTTPInternalServerError(body=traceback.format_exc())
|
|
trans_time = time.time() - start_time
|
|
if self.log_requests:
|
|
log_line = '%s - - [%s] "%s %s" %s %s "%s" "%s" "%s" %.4f' % (
|
|
req.remote_addr,
|
|
time.strftime('%d/%b/%Y:%H:%M:%S +0000',
|
|
time.gmtime()),
|
|
req.method, req.path, res.status.split()[0],
|
|
res.content_length or '-', req.referer or '-',
|
|
req.headers.get('x-trans-id', '-'),
|
|
req.user_agent or '-',
|
|
trans_time)
|
|
if req.method == 'REPLICATE':
|
|
self.logger.debug(log_line)
|
|
else:
|
|
self.logger.info(log_line)
|
|
if req.method in ('PUT', 'DELETE'):
|
|
slow = self.slow - trans_time
|
|
if slow > 0:
|
|
sleep(slow)
|
|
return res(env, start_response)
|
|
|
|
|
|
def app_factory(global_conf, **local_conf):
|
|
"""paste.deploy app factory for creating WSGI object server apps"""
|
|
conf = global_conf.copy()
|
|
conf.update(local_conf)
|
|
return ObjectController(conf)
|