d61dfb32e7
The object server knows the size of the file on disk already since it's counted the bytes as they were written out. There's no need to go ask the filesystem. This also lets object PUTs work when the filesystem is some crazy, non-POSIX thing that doesn't always give the right answers from fstat(). See bug 904723 for a case when this happened. Fixes bug 904723. Change-Id: Ibdf44ea991e0cc4f9e0997cc9ff566cb0eac5332
914 lines
39 KiB
Python
Executable File
914 lines
39 KiB
Python
Executable File
# Copyright (c) 2010-2012 OpenStack, LLC.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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""" Object Server for Swift """
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from __future__ import with_statement
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import cPickle as pickle
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import errno
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import os
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import time
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import traceback
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from datetime import datetime
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from hashlib import md5
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from tempfile import mkstemp
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from urllib import unquote
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from contextlib import contextmanager
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from xattr import getxattr, setxattr
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from eventlet import sleep, Timeout, tpool
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from swift.common.utils import mkdirs, normalize_timestamp, public, \
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storage_directory, hash_path, renamer, fallocate, fsync, \
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split_path, drop_buffer_cache, get_logger, write_pickle, \
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config_true_value, validate_device_partition, timing_stats
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from swift.common.bufferedhttp import http_connect
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from swift.common.constraints import check_object_creation, check_mount, \
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check_float, check_utf8
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from swift.common.exceptions import ConnectionTimeout, DiskFileError, \
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DiskFileNotExist
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from swift.obj.replicator import tpool_reraise, invalidate_hash, \
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quarantine_renamer, get_hashes
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from swift.common.http import is_success
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from swift.common.swob import HTTPAccepted, HTTPBadRequest, HTTPCreated, \
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HTTPInternalServerError, HTTPNoContent, HTTPNotFound, HTTPNotModified, \
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HTTPPreconditionFailed, HTTPRequestTimeout, HTTPUnprocessableEntity, \
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HTTPClientDisconnect, HTTPMethodNotAllowed, Request, Response, UTC, \
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HTTPInsufficientStorage, multi_range_iterator
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DATADIR = 'objects'
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ASYNCDIR = 'async_pending'
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PICKLE_PROTOCOL = 2
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METADATA_KEY = 'user.swift.metadata'
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MAX_OBJECT_NAME_LENGTH = 1024
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# keep these lower-case
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DISALLOWED_HEADERS = set('content-length content-type deleted etag'.split())
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def read_metadata(fd):
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"""
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Helper function to read the pickled metadata from an object file.
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:param fd: file descriptor to load the metadata from
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:returns: dictionary of metadata
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"""
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metadata = ''
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key = 0
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try:
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while True:
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metadata += getxattr(fd, '%s%s' % (METADATA_KEY, (key or '')))
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key += 1
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except IOError:
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pass
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return pickle.loads(metadata)
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def write_metadata(fd, metadata):
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"""
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Helper function to write pickled metadata for an object file.
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:param fd: file descriptor to write the metadata
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:param metadata: metadata to write
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"""
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metastr = pickle.dumps(metadata, PICKLE_PROTOCOL)
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key = 0
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while metastr:
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setxattr(fd, '%s%s' % (METADATA_KEY, key or ''), metastr[:254])
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metastr = metastr[254:]
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key += 1
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class DiskFile(object):
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"""
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Manage object files on disk.
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:param path: path to devices on the node
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:param device: device name
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:param partition: partition on the device the object lives in
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:param account: account name for the object
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:param container: container name for the object
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:param obj: object name for the object
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:param keep_data_fp: if True, don't close the fp, otherwise close it
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:param disk_chunk_size: size of chunks on file reads
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:param iter_hook: called when __iter__ returns a chunk
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"""
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def __init__(self, path, device, partition, account, container, obj,
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logger, keep_data_fp=False, disk_chunk_size=65536,
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iter_hook=None):
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self.disk_chunk_size = disk_chunk_size
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self.iter_hook = iter_hook
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self.name = '/' + '/'.join((account, container, obj))
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name_hash = hash_path(account, container, obj)
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self.datadir = os.path.join(
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path, device, storage_directory(DATADIR, partition, name_hash))
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self.device_path = os.path.join(path, device)
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self.tmpdir = os.path.join(path, device, 'tmp')
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self.logger = logger
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self.metadata = {}
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self.meta_file = None
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self.data_file = None
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self.fp = None
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self.iter_etag = None
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self.started_at_0 = False
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self.read_to_eof = False
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self.quarantined_dir = None
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self.keep_cache = False
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self.suppress_file_closing = False
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if not os.path.exists(self.datadir):
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return
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files = sorted(os.listdir(self.datadir), reverse=True)
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for file in files:
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if file.endswith('.ts'):
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self.data_file = self.meta_file = None
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self.metadata = {'deleted': True}
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return
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if file.endswith('.meta') and not self.meta_file:
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self.meta_file = os.path.join(self.datadir, file)
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if file.endswith('.data') and not self.data_file:
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self.data_file = os.path.join(self.datadir, file)
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break
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if not self.data_file:
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return
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self.fp = open(self.data_file, 'rb')
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self.metadata = read_metadata(self.fp)
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if not keep_data_fp:
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self.close(verify_file=False)
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if self.meta_file:
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with open(self.meta_file) as mfp:
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for key in self.metadata.keys():
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if key.lower() not in DISALLOWED_HEADERS:
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del self.metadata[key]
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self.metadata.update(read_metadata(mfp))
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def __iter__(self):
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"""Returns an iterator over the data file."""
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try:
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dropped_cache = 0
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read = 0
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self.started_at_0 = False
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self.read_to_eof = False
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if self.fp.tell() == 0:
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self.started_at_0 = True
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self.iter_etag = md5()
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while True:
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chunk = self.fp.read(self.disk_chunk_size)
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if chunk:
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if self.iter_etag:
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self.iter_etag.update(chunk)
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read += len(chunk)
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if read - dropped_cache > (1024 * 1024):
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self.drop_cache(self.fp.fileno(), dropped_cache,
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read - dropped_cache)
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dropped_cache = read
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yield chunk
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if self.iter_hook:
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self.iter_hook()
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else:
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self.read_to_eof = True
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self.drop_cache(self.fp.fileno(), dropped_cache,
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read - dropped_cache)
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break
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finally:
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if not self.suppress_file_closing:
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self.close()
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def app_iter_range(self, start, stop):
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"""Returns an iterator over the data file for range (start, stop)"""
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if start or start == 0:
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self.fp.seek(start)
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if stop is not None:
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length = stop - start
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else:
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length = None
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for chunk in self:
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if length is not None:
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length -= len(chunk)
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if length < 0:
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# Chop off the extra:
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yield chunk[:length]
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break
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yield chunk
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def app_iter_ranges(self, ranges, content_type, boundary, size):
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"""Returns an iterator over the data file for a set of ranges"""
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if (not ranges or len(ranges) == 0):
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yield ''
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else:
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try:
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self.suppress_file_closing = True
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for chunk in multi_range_iterator(
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ranges, content_type, boundary, size,
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self.app_iter_range):
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yield chunk
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finally:
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self.suppress_file_closing = False
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self.close()
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def _handle_close_quarantine(self):
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"""Check if file needs to be quarantined"""
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try:
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obj_size = self.get_data_file_size()
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except DiskFileError, e:
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self.quarantine()
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return
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except DiskFileNotExist:
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return
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if self.iter_etag and self.started_at_0 and self.read_to_eof and \
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'ETag' in self.metadata and \
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self.iter_etag.hexdigest() != self.metadata.get('ETag'):
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self.quarantine()
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def close(self, verify_file=True):
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"""
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Close the file. Will handle quarantining file if necessary.
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:param verify_file: Defaults to True. If false, will not check
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file to see if it needs quarantining.
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"""
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if self.fp:
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try:
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if verify_file:
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self._handle_close_quarantine()
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except (Exception, Timeout), e:
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self.logger.error(_(
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'ERROR DiskFile %(data_file)s in '
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'%(data_dir)s close failure: %(exc)s : %(stack)'),
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{'exc': e, 'stack': ''.join(traceback.format_stack()),
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'data_file': self.data_file, 'data_dir': self.datadir})
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finally:
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self.fp.close()
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self.fp = None
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def is_deleted(self):
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"""
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Check if the file is deleted.
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:returns: True if the file doesn't exist or has been flagged as
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deleted.
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"""
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return not self.data_file or 'deleted' in self.metadata
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@contextmanager
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def mkstemp(self):
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"""Contextmanager to make a temporary file."""
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if not os.path.exists(self.tmpdir):
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mkdirs(self.tmpdir)
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fd, tmppath = mkstemp(dir=self.tmpdir)
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try:
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yield fd, tmppath
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finally:
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try:
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os.close(fd)
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except OSError:
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pass
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try:
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os.unlink(tmppath)
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except OSError:
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pass
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def put(self, fd, tmppath, metadata, extension='.data'):
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"""
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Finalize writing the file on disk, and renames it from the temp file to
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the real location. This should be called after the data has been
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written to the temp file.
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:params fd: file descriptor of the temp file
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:param tmppath: path to the temporary file being used
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:param metadata: dictionary of metadata to be written
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:param extension: extension to be used when making the file
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"""
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metadata['name'] = self.name
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timestamp = normalize_timestamp(metadata['X-Timestamp'])
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write_metadata(fd, metadata)
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if 'Content-Length' in metadata:
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self.drop_cache(fd, 0, int(metadata['Content-Length']))
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tpool.execute(fsync, fd)
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invalidate_hash(os.path.dirname(self.datadir))
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renamer(tmppath, os.path.join(self.datadir, timestamp + extension))
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self.metadata = metadata
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def unlinkold(self, timestamp):
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"""
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Remove any older versions of the object file. Any file that has an
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older timestamp than timestamp will be deleted.
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:param timestamp: timestamp to compare with each file
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"""
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timestamp = normalize_timestamp(timestamp)
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for fname in os.listdir(self.datadir):
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if fname < timestamp:
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try:
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os.unlink(os.path.join(self.datadir, fname))
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except OSError, err: # pragma: no cover
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if err.errno != errno.ENOENT:
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raise
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def drop_cache(self, fd, offset, length):
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"""Method for no-oping buffer cache drop method."""
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if not self.keep_cache:
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drop_buffer_cache(fd, offset, length)
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def quarantine(self):
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"""
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In the case that a file is corrupted, move it to a quarantined
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area to allow replication to fix it.
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:returns: if quarantine is successful, path to quarantined
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directory otherwise None
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"""
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if not (self.is_deleted() or self.quarantined_dir):
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self.quarantined_dir = quarantine_renamer(self.device_path,
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self.data_file)
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self.logger.increment('quarantines')
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return self.quarantined_dir
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def get_data_file_size(self):
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"""
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Returns the os.path.getsize for the file. Raises an exception if this
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file does not match the Content-Length stored in the metadata. Or if
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self.data_file does not exist.
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:returns: file size as an int
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:raises DiskFileError: on file size mismatch.
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:raises DiskFileNotExist: on file not existing (including deleted)
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"""
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try:
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file_size = 0
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if self.data_file:
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file_size = os.path.getsize(self.data_file)
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if 'Content-Length' in self.metadata:
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metadata_size = int(self.metadata['Content-Length'])
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if file_size != metadata_size:
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raise DiskFileError(
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'Content-Length of %s does not match file size '
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'of %s' % (metadata_size, file_size))
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return file_size
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except OSError, err:
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if err.errno != errno.ENOENT:
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raise
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raise DiskFileNotExist('Data File does not exist.')
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class ObjectController(object):
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"""Implements the WSGI application for the Swift Object Server."""
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def __init__(self, conf):
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"""
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Creates a new WSGI application for the Swift Object Server. An
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example configuration is given at
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<source-dir>/etc/object-server.conf-sample or
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/etc/swift/object-server.conf-sample.
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"""
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self.logger = get_logger(conf, log_route='object-server')
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self.devices = conf.get('devices', '/srv/node/')
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self.mount_check = config_true_value(conf.get('mount_check', 'true'))
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self.node_timeout = int(conf.get('node_timeout', 3))
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self.conn_timeout = float(conf.get('conn_timeout', 0.5))
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self.disk_chunk_size = int(conf.get('disk_chunk_size', 65536))
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self.network_chunk_size = int(conf.get('network_chunk_size', 65536))
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self.keep_cache_size = int(conf.get('keep_cache_size', 5242880))
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self.keep_cache_private = \
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config_true_value(conf.get('keep_cache_private', 'false'))
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self.log_requests = config_true_value(conf.get('log_requests', 'true'))
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self.max_upload_time = int(conf.get('max_upload_time', 86400))
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self.slow = int(conf.get('slow', 0))
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self.bytes_per_sync = int(conf.get('mb_per_sync', 512)) * 1024 * 1024
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default_allowed_headers = '''
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content-disposition,
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content-encoding,
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x-delete-at,
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x-object-manifest,
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'''
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self.allowed_headers = set(
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i.strip().lower() for i in
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conf.get('allowed_headers', default_allowed_headers).split(',')
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if i.strip() and i.strip().lower() not in DISALLOWED_HEADERS)
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self.expiring_objects_account = \
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(conf.get('auto_create_account_prefix') or '.') + \
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'expiring_objects'
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self.expiring_objects_container_divisor = \
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int(conf.get('expiring_objects_container_divisor') or 86400)
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def async_update(self, op, account, container, obj, host, partition,
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contdevice, headers_out, objdevice):
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"""
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Sends or saves an async update.
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:param op: operation performed (ex: 'PUT', or 'DELETE')
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:param account: account name for the object
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:param container: container name for the object
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:param obj: object name
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:param host: host that the container is on
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:param partition: partition that the container is on
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:param contdevice: device name that the container is on
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:param headers_out: dictionary of headers to send in the container
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request
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:param objdevice: device name that the object is in
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"""
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full_path = '/%s/%s/%s' % (account, container, obj)
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if all([host, partition, contdevice]):
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try:
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with ConnectionTimeout(self.conn_timeout):
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ip, port = host.rsplit(':', 1)
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conn = http_connect(ip, port, contdevice, partition, op,
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full_path, headers_out)
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with Timeout(self.node_timeout):
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response = conn.getresponse()
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response.read()
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if is_success(response.status):
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return
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else:
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self.logger.error(_(
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'ERROR Container update failed '
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'(saving for async update later): %(status)d '
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'response from %(ip)s:%(port)s/%(dev)s'),
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{'status': response.status, 'ip': ip, 'port': port,
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'dev': contdevice})
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except (Exception, Timeout):
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self.logger.exception(_(
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'ERROR container update failed with '
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'%(ip)s:%(port)s/%(dev)s (saving for async update later)'),
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{'ip': ip, 'port': port, 'dev': contdevice})
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async_dir = os.path.join(self.devices, objdevice, ASYNCDIR)
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ohash = hash_path(account, container, obj)
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self.logger.increment('async_pendings')
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write_pickle(
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{'op': op, 'account': account, 'container': container,
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'obj': obj, 'headers': headers_out},
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os.path.join(async_dir, ohash[-3:], ohash + '-' +
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normalize_timestamp(headers_out['x-timestamp'])),
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os.path.join(self.devices, objdevice, 'tmp'))
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def container_update(self, op, account, container, obj, headers_in,
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headers_out, objdevice):
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"""
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|
Update the container when objects are updated.
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|
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:param op: operation performed (ex: 'PUT', or 'DELETE')
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:param account: account name for the object
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|
:param container: container name for the object
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:param obj: object name
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:param headers_in: dictionary of headers from the original request
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|
:param headers_out: dictionary of headers to send in the container
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request
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:param objdevice: device name that the object is in
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"""
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host = headers_in.get('X-Container-Host', None)
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partition = headers_in.get('X-Container-Partition', None)
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contdevice = headers_in.get('X-Container-Device', None)
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if not all([host, partition, contdevice]):
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return
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self.async_update(op, account, container, obj, host, partition,
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contdevice, headers_out, objdevice)
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def delete_at_update(self, op, delete_at, account, container, obj,
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headers_in, objdevice):
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"""
|
|
Update the expiring objects container when objects are updated.
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|
|
|
: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)
|
|
host = partition = contdevice = None
|
|
headers_out = {'x-timestamp': headers_in['x-timestamp'],
|
|
'x-trans-id': headers_in.get('x-trans-id', '-')}
|
|
if op != 'DELETE':
|
|
host = headers_in.get('X-Delete-At-Host', None)
|
|
partition = headers_in.get('X-Delete-At-Partition', None)
|
|
contdevice = headers_in.get('X-Delete-At-Device', None)
|
|
headers_out['x-size'] = '0'
|
|
headers_out['x-content-type'] = 'text/plain'
|
|
headers_out['x-etag'] = 'd41d8cd98f00b204e9800998ecf8427e'
|
|
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 'X-Delete-At' in file.metadata and \
|
|
int(file.metadata['X-Delete-At']) <= time.time():
|
|
return HTTPNotFound(request=request)
|
|
if file.is_deleted():
|
|
response_class = HTTPNotFound
|
|
else:
|
|
response_class = HTTPAccepted
|
|
try:
|
|
file_size = file.get_data_file_size()
|
|
except (DiskFileError, DiskFileNotExist):
|
|
file.quarantine()
|
|
return HTTPNotFound(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)
|
|
with file.mkstemp() as (fd, tmppath):
|
|
file.put(fd, tmppath, metadata, extension='.meta')
|
|
return response_class(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')
|
|
upload_expiration = time.time() + self.max_upload_time
|
|
etag = md5()
|
|
upload_size = 0
|
|
last_sync = 0
|
|
with file.mkstemp() as (fd, tmppath):
|
|
if 'content-length' in request.headers:
|
|
try:
|
|
fallocate(fd, int(request.headers['content-length']))
|
|
except OSError:
|
|
return HTTPInsufficientStorage(drive=device,
|
|
request=request)
|
|
reader = request.environ['wsgi.input'].read
|
|
for chunk in iter(lambda: reader(self.network_chunk_size), ''):
|
|
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(fsync, fd)
|
|
drop_buffer_cache(fd, last_sync, upload_size - last_sync)
|
|
last_sync = upload_size
|
|
sleep()
|
|
|
|
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, tmppath, 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 \
|
|
('X-Delete-At' in file.metadata and
|
|
int(file.metadata['X-Delete-At']) <= time.time()):
|
|
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
|
|
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 \
|
|
('X-Delete-At' in file.metadata and
|
|
int(file.metadata['X-Delete-At']) <= time.time()):
|
|
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')
|
|
orig_timestamp = file.metadata.get('X-Timestamp')
|
|
if file.is_deleted():
|
|
response_class = HTTPNotFound
|
|
metadata = {
|
|
'X-Timestamp': request.headers['X-Timestamp'], 'deleted': True,
|
|
}
|
|
with file.mkstemp() as (fd, tmppath):
|
|
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)
|
|
file.put(fd, tmppath, metadata, extension='.ts')
|
|
file.unlinkold(metadata['X-Timestamp'])
|
|
if not orig_timestamp or \
|
|
orig_timestamp < request.headers['x-timestamp']:
|
|
self.container_update(
|
|
'DELETE', account, container, obj, request.headers,
|
|
{'x-timestamp': metadata['X-Timestamp'],
|
|
'x-trans-id': request.headers.get('x-trans-id', '-')},
|
|
device)
|
|
resp = response_class(request=request)
|
|
return resp
|
|
|
|
@public
|
|
@timing_stats
|
|
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')
|
|
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)
|