3c0289844f
This patch adds exception logging to the swift service API. Each operation that results in failure of any operation will now log the exception as well as report a timestamp and full stack trace in the results returned by the service API calls. Change-Id: I7336b28354e7740ea7d048bdf355e3c1a1b4436c
2351 lines
88 KiB
Python
2351 lines
88 KiB
Python
# Copyright (c) 2010-2013 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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import logging
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import os
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from concurrent.futures import as_completed, CancelledError, TimeoutError
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from copy import deepcopy
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from errno import EEXIST, ENOENT
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from hashlib import md5
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from os import environ, makedirs, stat, utime
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from os.path import (
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basename, dirname, getmtime, getsize, isdir, join, sep as os_path_sep
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)
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from random import shuffle
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from time import time
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from threading import Thread
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from six import StringIO, text_type
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from six.moves.queue import Queue
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from six.moves.queue import Empty as QueueEmpty
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from six.moves.urllib.parse import quote, unquote
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from six import Iterator, string_types
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import json
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from swiftclient import Connection
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from swiftclient.command_helpers import (
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stat_account, stat_container, stat_object
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)
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from swiftclient.utils import (
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config_true_value, ReadableToIterable, LengthWrapper, EMPTY_ETAG,
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parse_api_response, report_traceback
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)
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from swiftclient.exceptions import ClientException
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from swiftclient.multithreading import MultiThreadingManager
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logger = logging.getLogger("swiftclient.service")
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class ResultsIterator(Iterator):
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def __init__(self, futures):
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self.futures = interruptable_as_completed(futures)
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def __iter__(self):
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return self
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def __next__(self):
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next_completed_future = next(self.futures)
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return next_completed_future.result()
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class SwiftError(Exception):
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def __init__(self, value, container=None, obj=None,
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segment=None, exc=None):
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self.value = value
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self.container = container
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self.obj = obj
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self.segment = segment
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self.exception = exc
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def __str__(self):
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value = repr(self.value)
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if self.container is not None:
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value += " container:%s" % self.container
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if self.obj is not None:
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value += " object:%s" % self.obj
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if self.segment is not None:
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value += " segment:%s" % self.segment
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return value
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def process_options(options):
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if (not (options.get('auth') and options.get('user')
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and options.get('key'))
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and options.get('auth_version') != '3'):
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# Use keystone 2.0 auth if any of the old-style args are missing
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options['auth_version'] = '2.0'
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# Use new-style args if old ones not present
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if not options['auth'] and options['os_auth_url']:
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options['auth'] = options['os_auth_url']
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if not options['user']and options['os_username']:
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options['user'] = options['os_username']
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if not options['key'] and options['os_password']:
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options['key'] = options['os_password']
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# Specific OpenStack options
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options['os_options'] = {
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'user_id': options['os_user_id'],
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'user_domain_id': options['os_user_domain_id'],
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'user_domain_name': options['os_user_domain_name'],
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'tenant_id': options['os_tenant_id'],
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'tenant_name': options['os_tenant_name'],
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'project_id': options['os_project_id'],
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'project_name': options['os_project_name'],
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'project_domain_id': options['os_project_domain_id'],
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'project_domain_name': options['os_project_domain_name'],
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'service_type': options['os_service_type'],
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'endpoint_type': options['os_endpoint_type'],
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'auth_token': options['os_auth_token'],
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'object_storage_url': options['os_storage_url'],
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'region_name': options['os_region_name'],
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}
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def _build_default_global_options():
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return {
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"snet": False,
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"verbose": 1,
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"debug": False,
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"info": False,
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"auth": environ.get('ST_AUTH'),
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"auth_version": environ.get('ST_AUTH_VERSION', '1.0'),
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"user": environ.get('ST_USER'),
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"key": environ.get('ST_KEY'),
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"retries": 5,
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"os_username": environ.get('OS_USERNAME'),
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"os_user_id": environ.get('OS_USER_ID'),
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"os_user_domain_name": environ.get('OS_USER_DOMAIN_NAME'),
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"os_user_domain_id": environ.get('OS_USER_DOMAIN_ID'),
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"os_password": environ.get('OS_PASSWORD'),
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"os_tenant_id": environ.get('OS_TENANT_ID'),
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"os_tenant_name": environ.get('OS_TENANT_NAME'),
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"os_project_name": environ.get('OS_PROJECT_NAME'),
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"os_project_id": environ.get('OS_PROJECT_ID'),
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"os_project_domain_name": environ.get('OS_PROJECT_DOMAIN_NAME'),
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"os_project_domain_id": environ.get('OS_PROJECT_DOMAIN_ID'),
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"os_auth_url": environ.get('OS_AUTH_URL'),
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"os_auth_token": environ.get('OS_AUTH_TOKEN'),
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"os_storage_url": environ.get('OS_STORAGE_URL'),
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"os_region_name": environ.get('OS_REGION_NAME'),
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"os_service_type": environ.get('OS_SERVICE_TYPE'),
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"os_endpoint_type": environ.get('OS_ENDPOINT_TYPE'),
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"os_cacert": environ.get('OS_CACERT'),
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"insecure": config_true_value(environ.get('SWIFTCLIENT_INSECURE')),
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"ssl_compression": False,
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'segment_threads': 10,
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'object_dd_threads': 10,
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'object_uu_threads': 10,
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'container_threads': 10
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}
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_default_global_options = _build_default_global_options()
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_default_local_options = {
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'sync_to': None,
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'sync_key': None,
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'use_slo': False,
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'segment_size': None,
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'segment_container': None,
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'leave_segments': False,
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'changed': None,
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'skip_identical': False,
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'yes_all': False,
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'read_acl': None,
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'write_acl': None,
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'out_file': None,
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'out_directory': None,
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'remove_prefix': False,
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'no_download': False,
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'long': False,
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'totals': False,
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'marker': '',
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'header': [],
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'meta': [],
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'prefix': None,
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'delimiter': None,
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'fail_fast': False,
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'human': False,
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'dir_marker': False,
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'checksum': True,
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'shuffle': False
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}
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POLICY = 'X-Storage-Policy'
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def get_from_queue(q, timeout=864000):
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while True:
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try:
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item = q.get(timeout=timeout)
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return item
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except QueueEmpty:
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# Do nothing here, we only have a timeout to allow interruption
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pass
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def get_future_result(f, timeout=86400):
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while True:
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try:
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res = f.result(timeout=timeout)
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return res
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except TimeoutError:
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# Do nothing here, we only have a timeout to allow interruption
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pass
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def interruptable_as_completed(fs, timeout=86400):
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while True:
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try:
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for f in as_completed(fs, timeout=timeout):
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fs.remove(f)
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yield f
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return
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except TimeoutError:
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# Do nothing here, we only have a timeout to allow interruption
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pass
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def get_conn(options):
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"""
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Return a connection building it from the options.
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"""
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return Connection(options['auth'],
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options['user'],
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options['key'],
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options['retries'],
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auth_version=options['auth_version'],
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os_options=options['os_options'],
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snet=options['snet'],
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cacert=options['os_cacert'],
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insecure=options['insecure'],
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ssl_compression=options['ssl_compression'])
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def mkdirs(path):
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try:
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makedirs(path)
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except OSError as err:
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if err.errno != EEXIST:
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raise
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def split_headers(options, prefix=''):
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"""
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Splits 'Key: Value' strings and returns them as a dictionary.
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:param options: An array of 'Key: Value' strings
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:param prefix: String to prepend to all of the keys in the dictionary.
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reporting.
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"""
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headers = {}
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for item in options:
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split_item = item.split(':', 1)
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if len(split_item) == 2:
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headers[(prefix + split_item[0]).title()] = split_item[1]
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else:
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raise SwiftError(
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"Metadata parameter %s must contain a ':'.\n%s"
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% (item, "Example: 'Color:Blue' or 'Size:Large'")
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)
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return headers
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class SwiftUploadObject(object):
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"""
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Class for specifying an object upload, allowing the object source, name and
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options to be specified separately for each individual object.
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"""
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def __init__(self, source, object_name=None, options=None):
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if isinstance(source, string_types):
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self.object_name = object_name or source
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elif source is None or hasattr(source, 'read'):
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if not object_name or not isinstance(object_name, string_types):
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raise SwiftError('Object names must be specified as '
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'strings for uploads from None or file '
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'like objects.')
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self.object_name = object_name
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else:
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raise SwiftError('Unexpected source type for '
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'SwiftUploadObject: {0}'.format(type(source)))
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if not self.object_name:
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raise SwiftError('Object names must not be empty strings')
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self.options = options
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self.source = source
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class SwiftPostObject(object):
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"""
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Class for specifying an object post, allowing the headers/metadata to be
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specified separately for each individual object.
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"""
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def __init__(self, object_name, options=None):
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if not isinstance(object_name, string_types) or not object_name:
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raise SwiftError(
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"Object names must be specified as non-empty strings"
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)
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else:
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self.object_name = object_name
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self.options = options
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class _SwiftReader(object):
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"""
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Class for downloading objects from swift and raising appropriate
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errors on failures caused by either invalid md5sum or size of the
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data read.
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"""
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def __init__(self, path, body, headers):
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self._path = path
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self._body = body
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self._actual_read = 0
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self._content_length = None
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self._actual_md5 = None
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self._expected_etag = headers.get('etag')
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if ('x-object-manifest' not in headers
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and 'x-static-large-object' not in headers):
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self._actual_md5 = md5()
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if 'content-length' in headers:
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try:
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self._content_length = int(headers.get('content-length'))
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except ValueError:
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raise SwiftError('content-length header must be an integer')
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def __iter__(self):
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for chunk in self._body:
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if self._actual_md5:
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self._actual_md5.update(chunk)
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self._actual_read += len(chunk)
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yield chunk
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self._check_contents()
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def _check_contents(self):
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if self._actual_md5 and self._expected_etag:
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etag = self._actual_md5.hexdigest()
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if etag != self._expected_etag:
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raise SwiftError('Error downloading {0}: md5sum != etag, '
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'{1} != {2}'.format(
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self._path, etag, self._expected_etag))
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if (self._content_length is not None
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and self._actual_read != self._content_length):
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raise SwiftError('Error downloading {0}: read_length != '
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'content_length, {1:d} != {2:d}'.format(
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self._path, self._actual_read,
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self._content_length))
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def bytes_read(self):
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return self._actual_read
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class SwiftService(object):
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"""
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Service for performing swift operations
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"""
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def __init__(self, options=None):
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if options is not None:
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self._options = dict(
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_default_global_options,
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**dict(_default_local_options, **options)
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)
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else:
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self._options = dict(
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_default_global_options,
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**_default_local_options
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)
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process_options(self._options)
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create_connection = lambda: get_conn(self._options)
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self.thread_manager = MultiThreadingManager(
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create_connection,
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segment_threads=self._options['segment_threads'],
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object_dd_threads=self._options['object_dd_threads'],
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object_uu_threads=self._options['object_uu_threads'],
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container_threads=self._options['container_threads']
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)
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def __enter__(self):
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self.thread_manager.__enter__()
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return self
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def __exit__(self, exc_type, exc_val, exc_tb):
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self.thread_manager.__exit__(exc_type, exc_val, exc_tb)
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# Stat related methods
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#
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def stat(self, container=None, objects=None, options=None):
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"""
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Get account stats, container stats or information about a list of
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objects in a container.
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:param container: The container to query.
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:param objects: A list of object paths about which to return
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information (a list of strings).
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:param options: A dictionary containing options to override the global
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options specified during the service object creation.
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These options are applied to all stat operations
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performed by this call::
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{
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'human': False
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}
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:returns: Either a single dictionary containing stats about an account
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or container, or an iterator for returning the results of the
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stat operations on a list of objects.
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:raises: SwiftError
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"""
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if options is not None:
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options = dict(self._options, **options)
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else:
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options = self._options
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if not container:
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if objects:
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raise SwiftError('Objects specified without container')
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else:
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res = {
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'action': 'stat_account',
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'success': True,
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'container': container,
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'object': None,
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}
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try:
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stats_future = self.thread_manager.container_pool.submit(
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stat_account, options
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)
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items, headers = get_future_result(stats_future)
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res.update({
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'items': items,
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'headers': headers
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})
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return res
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except ClientException as err:
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if err.http_status != 404:
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traceback, err_time = report_traceback()
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logger.exception(err)
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res.update({
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'success': False,
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'error': err,
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'traceback': traceback,
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'error_timestamp': err_time
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})
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return res
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raise SwiftError('Account not found', exc=err)
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except Exception as err:
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traceback, err_time = report_traceback()
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logger.exception(err)
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res.update({
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'success': False,
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'error': err,
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'traceback': traceback,
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'error_timestamp': err_time
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})
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return res
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else:
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if not objects:
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res = {
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'action': 'stat_container',
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'container': container,
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'object': None,
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'success': True,
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}
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try:
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stats_future = self.thread_manager.container_pool.submit(
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stat_container, options, container
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)
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items, headers = get_future_result(stats_future)
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res.update({
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'items': items,
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'headers': headers
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})
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return res
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except ClientException as err:
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if err.http_status != 404:
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traceback, err_time = report_traceback()
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logger.exception(err)
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res.update({
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'success': False,
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'error': err,
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'traceback': traceback,
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'error_timestamp': err_time
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})
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return res
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raise SwiftError('Container %r not found' % container,
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container=container, exc=err)
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except Exception as err:
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traceback, err_time = report_traceback()
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logger.exception(err)
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res.update({
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'success': False,
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'error': err,
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'traceback': traceback,
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'error_timestamp': err_time
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})
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return res
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else:
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stat_futures = []
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for stat_o in objects:
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stat_future = self.thread_manager.object_dd_pool.submit(
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self._stat_object, container, stat_o, options
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)
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stat_futures.append(stat_future)
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return ResultsIterator(stat_futures)
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|
|
@staticmethod
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def _stat_object(conn, container, obj, options):
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res = {
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'action': 'stat_object',
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'object': obj,
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'container': container,
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'success': True,
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}
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try:
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items, headers = stat_object(conn, options, container, obj)
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res.update({
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'items': items,
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'headers': headers
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})
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return res
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except Exception as err:
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traceback, err_time = report_traceback()
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logger.exception(err)
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res.update({
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'success': False,
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'error': err,
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'traceback': traceback,
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'error_timestamp': err_time
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})
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return res
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|
|
# Post related methods
|
|
#
|
|
def post(self, container=None, objects=None, options=None):
|
|
"""
|
|
Post operations on an account, container or list of objects
|
|
|
|
:param container: The container to make the post operation against.
|
|
:param objects: A list of object names (strings) or SwiftPostObject
|
|
instances containing an object name, and an
|
|
options dict (can be None) to override the options for
|
|
that individual post operation::
|
|
|
|
[
|
|
'object_name',
|
|
SwiftPostObject('object_name', options={...}),
|
|
...
|
|
]
|
|
|
|
The options dict is described below.
|
|
:param options: A dictionary containing options to override the global
|
|
options specified during the service object creation.
|
|
These options are applied to all post operations
|
|
performed by this call, unless overridden on a per
|
|
object basis. Possible options are given below::
|
|
|
|
{
|
|
'meta': [],
|
|
'headers': [],
|
|
'read_acl': None, # For containers only
|
|
'write_acl': None, # For containers only
|
|
'sync_to': None, # For containers only
|
|
'sync_key': None # For containers only
|
|
}
|
|
|
|
:returns: Either a single result dictionary in the case of a post to a
|
|
container/account, or an iterator for returning the results
|
|
of posts to a list of objects.
|
|
|
|
:raises: SwiftError
|
|
"""
|
|
if options is not None:
|
|
options = dict(self._options, **options)
|
|
else:
|
|
options = self._options
|
|
|
|
res = {
|
|
'success': True,
|
|
'container': container,
|
|
'object': None,
|
|
'headers': {},
|
|
}
|
|
if not container:
|
|
res["action"] = "post_account"
|
|
if objects:
|
|
raise SwiftError('Objects specified without container')
|
|
else:
|
|
response_dict = {}
|
|
headers = split_headers(
|
|
options['meta'], 'X-Account-Meta-')
|
|
headers.update(
|
|
split_headers(options['header'], ''))
|
|
res['headers'] = headers
|
|
try:
|
|
post = self.thread_manager.container_pool.submit(
|
|
self._post_account_job, headers, response_dict
|
|
)
|
|
get_future_result(post)
|
|
except ClientException as err:
|
|
if err.http_status != 404:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
res.update({
|
|
'success': False,
|
|
'error': err,
|
|
'traceback': traceback,
|
|
'error_timestamp': err_time,
|
|
'response_dict': response_dict
|
|
})
|
|
return res
|
|
raise SwiftError('Account not found', exc=err)
|
|
except Exception as err:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
res.update({
|
|
'success': False,
|
|
'error': err,
|
|
'response_dict': response_dict,
|
|
'traceback': traceback,
|
|
'error_timestamp': err_time
|
|
})
|
|
return res
|
|
if not objects:
|
|
res["action"] = "post_container"
|
|
response_dict = {}
|
|
headers = split_headers(
|
|
options['meta'], 'X-Container-Meta-')
|
|
headers.update(
|
|
split_headers(options['header'], ''))
|
|
if options['read_acl'] is not None:
|
|
headers['X-Container-Read'] = options['read_acl']
|
|
if options['write_acl'] is not None:
|
|
headers['X-Container-Write'] = options['write_acl']
|
|
if options['sync_to'] is not None:
|
|
headers['X-Container-Sync-To'] = options['sync_to']
|
|
if options['sync_key'] is not None:
|
|
headers['X-Container-Sync-Key'] = options['sync_key']
|
|
res['headers'] = headers
|
|
try:
|
|
post = self.thread_manager.container_pool.submit(
|
|
self._post_container_job, container,
|
|
headers, response_dict
|
|
)
|
|
get_future_result(post)
|
|
except ClientException as err:
|
|
if err.http_status != 404:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
res.update({
|
|
'action': 'post_container',
|
|
'success': False,
|
|
'error': err,
|
|
'traceback': traceback,
|
|
'error_timestamp': err_time,
|
|
'response_dict': response_dict
|
|
})
|
|
return res
|
|
raise SwiftError(
|
|
"Container '%s' not found" % container,
|
|
container=container, exc=err
|
|
)
|
|
except Exception as err:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
res.update({
|
|
'action': 'post_container',
|
|
'success': False,
|
|
'error': err,
|
|
'response_dict': response_dict,
|
|
'traceback': traceback,
|
|
'error_timestamp': err_time
|
|
})
|
|
return res
|
|
else:
|
|
post_futures = []
|
|
post_objects = self._make_post_objects(objects)
|
|
for post_object in post_objects:
|
|
obj = post_object.object_name
|
|
obj_options = post_object.options
|
|
response_dict = {}
|
|
headers = split_headers(
|
|
options['meta'], 'X-Object-Meta-')
|
|
# add header options to the headers object for the request.
|
|
headers.update(
|
|
split_headers(options['header'], ''))
|
|
if obj_options is not None:
|
|
if 'meta' in obj_options:
|
|
headers.update(
|
|
split_headers(
|
|
obj_options['meta'], 'X-Object-Meta'
|
|
)
|
|
)
|
|
if 'headers' in obj_options:
|
|
headers.update(
|
|
split_headers(obj_options['header'], '')
|
|
)
|
|
|
|
post = self.thread_manager.object_uu_pool.submit(
|
|
self._post_object_job, container, obj,
|
|
headers, response_dict
|
|
)
|
|
post_futures.append(post)
|
|
|
|
return ResultsIterator(post_futures)
|
|
|
|
@staticmethod
|
|
def _make_post_objects(objects):
|
|
post_objects = []
|
|
|
|
for o in objects:
|
|
if isinstance(o, string_types):
|
|
obj = SwiftPostObject(o)
|
|
post_objects.append(obj)
|
|
elif isinstance(o, SwiftPostObject):
|
|
post_objects.append(o)
|
|
else:
|
|
raise SwiftError(
|
|
"The post operation takes only strings or "
|
|
"SwiftPostObjects as input",
|
|
obj=o)
|
|
|
|
return post_objects
|
|
|
|
@staticmethod
|
|
def _post_account_job(conn, headers, result):
|
|
return conn.post_account(headers=headers, response_dict=result)
|
|
|
|
@staticmethod
|
|
def _post_container_job(conn, container, headers, result):
|
|
try:
|
|
res = conn.post_container(
|
|
container, headers=headers, response_dict=result)
|
|
except ClientException as err:
|
|
if err.http_status != 404:
|
|
raise
|
|
_response_dict = {}
|
|
res = conn.put_container(
|
|
container, headers=headers, response_dict=_response_dict)
|
|
result['post_put'] = _response_dict
|
|
return res
|
|
|
|
@staticmethod
|
|
def _post_object_job(conn, container, obj, headers, result):
|
|
res = {
|
|
'success': True,
|
|
'action': 'post_object',
|
|
'container': container,
|
|
'object': obj,
|
|
'headers': headers,
|
|
'response_dict': result
|
|
}
|
|
try:
|
|
conn.post_object(
|
|
container, obj, headers=headers, response_dict=result)
|
|
except Exception as err:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
res.update({
|
|
'success': False,
|
|
'error': err,
|
|
'traceback': traceback,
|
|
'error_timestamp': err_time
|
|
})
|
|
|
|
return res
|
|
|
|
# List related methods
|
|
#
|
|
def list(self, container=None, options=None):
|
|
"""
|
|
List operations on an account, container.
|
|
|
|
:param container: The container to make the list operation against.
|
|
:param options: A dictionary containing options to override the global
|
|
options specified during the service object creation::
|
|
|
|
{
|
|
'long': False,
|
|
'prefix': None,
|
|
'delimiter': None,
|
|
}
|
|
|
|
:returns: A generator for returning the results of the list operation
|
|
on an account or container. Each result yielded from the
|
|
generator is either a 'list_account_part' or
|
|
'list_container_part', containing part of the listing.
|
|
"""
|
|
if options is not None:
|
|
options = dict(self._options, **options)
|
|
else:
|
|
options = self._options
|
|
|
|
rq = Queue(maxsize=10) # Just stop list running away consuming memory
|
|
|
|
if container is None:
|
|
listing_future = self.thread_manager.container_pool.submit(
|
|
self._list_account_job, options, rq
|
|
)
|
|
else:
|
|
listing_future = self.thread_manager.container_pool.submit(
|
|
self._list_container_job, container, options, rq
|
|
)
|
|
|
|
res = get_from_queue(rq)
|
|
while res is not None:
|
|
yield res
|
|
res = get_from_queue(rq)
|
|
|
|
# Make sure the future has completed
|
|
get_future_result(listing_future)
|
|
|
|
@staticmethod
|
|
def _list_account_job(conn, options, result_queue):
|
|
marker = ''
|
|
error = None
|
|
try:
|
|
while True:
|
|
_, items = conn.get_account(
|
|
marker=marker, prefix=options['prefix']
|
|
)
|
|
|
|
if not items:
|
|
result_queue.put(None)
|
|
return
|
|
|
|
if options['long']:
|
|
for i in items:
|
|
name = i['name']
|
|
i['meta'] = conn.head_container(name)
|
|
|
|
res = {
|
|
'action': 'list_account_part',
|
|
'container': None,
|
|
'prefix': options['prefix'],
|
|
'success': True,
|
|
'listing': items,
|
|
'marker': marker,
|
|
}
|
|
result_queue.put(res)
|
|
|
|
marker = items[-1].get('name', items[-1].get('subdir'))
|
|
except ClientException as err:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
if err.http_status != 404:
|
|
error = (err, traceback, err_time)
|
|
else:
|
|
error = (
|
|
SwiftError('Account not found', exc=err),
|
|
traceback, err_time
|
|
)
|
|
|
|
except Exception as err:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
error = (err, traceback, err_time)
|
|
|
|
res = {
|
|
'action': 'list_account_part',
|
|
'container': None,
|
|
'prefix': options['prefix'],
|
|
'success': False,
|
|
'marker': marker,
|
|
'error': error[0],
|
|
'traceback': error[1],
|
|
'error_timestamp': error[2]
|
|
}
|
|
result_queue.put(res)
|
|
result_queue.put(None)
|
|
|
|
@staticmethod
|
|
def _list_container_job(conn, container, options, result_queue):
|
|
marker = ''
|
|
error = None
|
|
try:
|
|
while True:
|
|
_, items = conn.get_container(
|
|
container, marker=marker, prefix=options['prefix'],
|
|
delimiter=options['delimiter']
|
|
)
|
|
|
|
if not items:
|
|
result_queue.put(None)
|
|
return
|
|
|
|
res = {
|
|
'action': 'list_container_part',
|
|
'container': container,
|
|
'prefix': options['prefix'],
|
|
'success': True,
|
|
'marker': marker,
|
|
'listing': items,
|
|
}
|
|
result_queue.put(res)
|
|
|
|
marker = items[-1].get('name', items[-1].get('subdir'))
|
|
except ClientException as err:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
if err.http_status != 404:
|
|
error = (err, traceback, err_time)
|
|
else:
|
|
error = (
|
|
SwiftError(
|
|
'Container %r not found' % container,
|
|
container=container, exc=err
|
|
),
|
|
traceback,
|
|
err_time
|
|
)
|
|
except Exception as err:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
error = (err, traceback, err_time)
|
|
|
|
res = {
|
|
'action': 'list_container_part',
|
|
'container': container,
|
|
'prefix': options['prefix'],
|
|
'success': False,
|
|
'marker': marker,
|
|
'error': error[0],
|
|
'traceback': error[1],
|
|
'error_timestamp': error[2]
|
|
}
|
|
result_queue.put(res)
|
|
result_queue.put(None)
|
|
|
|
# Download related methods
|
|
#
|
|
def download(self, container=None, objects=None, options=None):
|
|
"""
|
|
Download operations on an account, optional container and optional list
|
|
of objects.
|
|
|
|
:param container: The container to download from.
|
|
:param objects: A list of object names to download (a list of strings).
|
|
:param options: A dictionary containing options to override the global
|
|
options specified during the service object creation::
|
|
|
|
{
|
|
'yes_all': False,
|
|
'marker': '',
|
|
'prefix': None,
|
|
'no_download': False,
|
|
'header': [],
|
|
'skip_identical': False,
|
|
'out_directory': None,
|
|
'out_file': None,
|
|
'remove_prefix': False,
|
|
'shuffle' : False
|
|
}
|
|
|
|
:returns: A generator for returning the results of the download
|
|
operations. Each result yielded from the generator is a
|
|
'download_object' dictionary containing the results of an
|
|
individual file download.
|
|
|
|
:raises: ClientException
|
|
:raises: SwiftError
|
|
"""
|
|
if options is not None:
|
|
options = dict(self._options, **options)
|
|
else:
|
|
options = self._options
|
|
|
|
if not container:
|
|
# Download everything if options['yes_all'] is set
|
|
if options['yes_all']:
|
|
try:
|
|
options_copy = deepcopy(options)
|
|
options_copy["long"] = False
|
|
|
|
for part in self.list(options=options_copy):
|
|
if part["success"]:
|
|
containers = [i['name'] for i in part["listing"]]
|
|
|
|
if options['shuffle']:
|
|
shuffle(containers)
|
|
|
|
for con in containers:
|
|
for res in self._download_container(
|
|
con, options_copy):
|
|
yield res
|
|
else:
|
|
raise part["error"]
|
|
|
|
# If we see a 404 here, the listing of the account failed
|
|
except ClientException as err:
|
|
if err.http_status != 404:
|
|
raise
|
|
raise SwiftError('Account not found', exc=err)
|
|
|
|
elif not objects:
|
|
if '/' in container:
|
|
raise SwiftError('\'/\' in container name',
|
|
container=container)
|
|
for res in self._download_container(container, options):
|
|
yield res
|
|
|
|
else:
|
|
if '/' in container:
|
|
raise SwiftError('\'/\' in container name',
|
|
container=container)
|
|
if options['out_file'] and len(objects) > 1:
|
|
options['out_file'] = None
|
|
|
|
o_downs = [
|
|
self.thread_manager.object_dd_pool.submit(
|
|
self._download_object_job, container, obj, options
|
|
) for obj in objects
|
|
]
|
|
|
|
for o_down in interruptable_as_completed(o_downs):
|
|
yield o_down.result()
|
|
|
|
def _download_object_job(self, conn, container, obj, options):
|
|
out_file = options['out_file']
|
|
results_dict = {}
|
|
|
|
req_headers = split_headers(options['header'], '')
|
|
|
|
pseudodir = False
|
|
path = join(container, obj) if options['yes_all'] else obj
|
|
path = path.lstrip(os_path_sep)
|
|
options['skip_identical'] = (options['skip_identical'] and
|
|
out_file != '-')
|
|
|
|
if options['prefix'] and options['remove_prefix']:
|
|
path = path[len(options['prefix']):].lstrip('/')
|
|
|
|
if options['out_directory']:
|
|
path = os.path.join(options['out_directory'], path)
|
|
|
|
if options['skip_identical']:
|
|
filename = out_file if out_file else path
|
|
try:
|
|
fp = open(filename, 'rb')
|
|
except IOError:
|
|
pass
|
|
else:
|
|
with fp:
|
|
md5sum = md5()
|
|
while True:
|
|
data = fp.read(65536)
|
|
if not data:
|
|
break
|
|
md5sum.update(data)
|
|
req_headers['If-None-Match'] = md5sum.hexdigest()
|
|
|
|
try:
|
|
start_time = time()
|
|
get_args = {'resp_chunk_size': 65536,
|
|
'headers': req_headers,
|
|
'response_dict': results_dict}
|
|
if options['skip_identical']:
|
|
# Assume the file is a large object; if we're wrong, the query
|
|
# string is ignored and the If-None-Match header will trigger
|
|
# the behavior we want
|
|
get_args['query_string'] = 'multipart-manifest=get'
|
|
|
|
try:
|
|
headers, body = conn.get_object(container, obj, **get_args)
|
|
except ClientException as e:
|
|
if not options['skip_identical']:
|
|
raise
|
|
if e.http_status != 304: # Only handling Not Modified
|
|
raise
|
|
|
|
headers = results_dict['headers']
|
|
if 'x-object-manifest' in headers:
|
|
# DLO: most likely it has more than one page worth of
|
|
# segments and we have an empty file locally
|
|
body = []
|
|
elif config_true_value(headers.get('x-static-large-object')):
|
|
# SLO: apparently we have a copy of the manifest locally?
|
|
# provide no chunking data to force a fresh download
|
|
body = [b'[]']
|
|
else:
|
|
# Normal object: let it bubble up
|
|
raise
|
|
|
|
if options['skip_identical']:
|
|
if config_true_value(headers.get('x-static-large-object')) or \
|
|
'x-object-manifest' in headers:
|
|
# The request was chunked, so stitch it back together
|
|
chunk_data = self._get_chunk_data(conn, container, obj,
|
|
headers, b''.join(body))
|
|
else:
|
|
chunk_data = None
|
|
|
|
if chunk_data is not None:
|
|
if self._is_identical(chunk_data, filename):
|
|
raise ClientException('Large object is identical',
|
|
http_status=304)
|
|
|
|
# Large objects are different; start the real download
|
|
del get_args['query_string']
|
|
get_args['response_dict'].clear()
|
|
headers, body = conn.get_object(container, obj, **get_args)
|
|
|
|
headers_receipt = time()
|
|
|
|
obj_body = _SwiftReader(path, body, headers)
|
|
|
|
no_file = options['no_download']
|
|
if out_file == "-" and not no_file:
|
|
res = {
|
|
'action': 'download_object',
|
|
'container': container,
|
|
'object': obj,
|
|
'path': path,
|
|
'pseudodir': pseudodir,
|
|
'contents': obj_body
|
|
}
|
|
return res
|
|
|
|
fp = None
|
|
try:
|
|
content_type = headers.get('content-type')
|
|
if (content_type and
|
|
content_type.split(';', 1)[0] == 'text/directory'):
|
|
make_dir = not no_file and out_file != "-"
|
|
if make_dir and not isdir(path):
|
|
mkdirs(path)
|
|
|
|
else:
|
|
make_dir = not (no_file or out_file)
|
|
if make_dir:
|
|
dirpath = dirname(path)
|
|
if dirpath and not isdir(dirpath):
|
|
mkdirs(dirpath)
|
|
|
|
if not no_file:
|
|
if out_file:
|
|
fp = open(out_file, 'wb')
|
|
else:
|
|
if basename(path):
|
|
fp = open(path, 'wb')
|
|
else:
|
|
pseudodir = True
|
|
|
|
for chunk in obj_body:
|
|
if fp is not None:
|
|
fp.write(chunk)
|
|
|
|
finish_time = time()
|
|
|
|
finally:
|
|
bytes_read = obj_body.bytes_read()
|
|
if fp is not None:
|
|
fp.close()
|
|
if 'x-object-meta-mtime' in headers and not no_file:
|
|
mtime = float(headers['x-object-meta-mtime'])
|
|
if options['out_file']:
|
|
utime(options['out_file'], (mtime, mtime))
|
|
else:
|
|
utime(path, (mtime, mtime))
|
|
|
|
res = {
|
|
'action': 'download_object',
|
|
'success': True,
|
|
'container': container,
|
|
'object': obj,
|
|
'path': path,
|
|
'pseudodir': pseudodir,
|
|
'start_time': start_time,
|
|
'finish_time': finish_time,
|
|
'headers_receipt': headers_receipt,
|
|
'auth_end_time': conn.auth_end_time,
|
|
'read_length': bytes_read,
|
|
'attempts': conn.attempts,
|
|
'response_dict': results_dict
|
|
}
|
|
return res
|
|
|
|
except Exception as err:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
res = {
|
|
'action': 'download_object',
|
|
'container': container,
|
|
'object': obj,
|
|
'success': False,
|
|
'error': err,
|
|
'traceback': traceback,
|
|
'error_timestamp': err_time,
|
|
'response_dict': results_dict,
|
|
'path': path,
|
|
'pseudodir': pseudodir,
|
|
'attempts': conn.attempts
|
|
}
|
|
return res
|
|
|
|
def _submit_page_downloads(self, container, page_generator, options):
|
|
try:
|
|
list_page = next(page_generator)
|
|
except StopIteration:
|
|
return None
|
|
|
|
if list_page["success"]:
|
|
objects = [o["name"] for o in list_page["listing"]]
|
|
|
|
if options["shuffle"]:
|
|
shuffle(objects)
|
|
|
|
o_downs = [
|
|
self.thread_manager.object_dd_pool.submit(
|
|
self._download_object_job, container, obj, options
|
|
) for obj in objects
|
|
]
|
|
|
|
return o_downs
|
|
else:
|
|
raise list_page["error"]
|
|
|
|
def _download_container(self, container, options):
|
|
_page_generator = self.list(container=container, options=options)
|
|
try:
|
|
next_page_downs = self._submit_page_downloads(
|
|
container, _page_generator, options
|
|
)
|
|
except ClientException as err:
|
|
if err.http_status != 404:
|
|
raise
|
|
raise SwiftError(
|
|
'Container %r not found' % container,
|
|
container=container, exc=err
|
|
)
|
|
|
|
error = None
|
|
while next_page_downs:
|
|
page_downs = next_page_downs
|
|
next_page_downs = None
|
|
|
|
# Start downloading the next page of list results when
|
|
# we have completed 80% of the previous page
|
|
next_page_triggered = False
|
|
next_page_trigger_point = 0.8 * len(page_downs)
|
|
|
|
page_results_yielded = 0
|
|
for o_down in interruptable_as_completed(page_downs):
|
|
yield o_down.result()
|
|
|
|
# Do we need to start the next set of downloads yet?
|
|
if not next_page_triggered:
|
|
page_results_yielded += 1
|
|
if page_results_yielded >= next_page_trigger_point:
|
|
try:
|
|
next_page_downs = self._submit_page_downloads(
|
|
container, _page_generator, options
|
|
)
|
|
except ClientException as err:
|
|
# Allow the current page to finish downloading
|
|
logger.exception(err)
|
|
error = err
|
|
except Exception:
|
|
# Something unexpected went wrong - cancel
|
|
# remaining downloads
|
|
for _d in page_downs:
|
|
_d.cancel()
|
|
raise
|
|
finally:
|
|
# Stop counting and testing
|
|
next_page_triggered = True
|
|
|
|
if error:
|
|
raise error
|
|
|
|
# Upload related methods
|
|
#
|
|
def upload(self, container, objects, options=None):
|
|
"""
|
|
Upload a list of objects to a given container.
|
|
|
|
:param container: The container to put the uploads into.
|
|
:param objects: A list of file/directory names (strings) or
|
|
SwiftUploadObject instances containing a source for the
|
|
created object, an object name, and an options dict
|
|
(can be None) to override the options for that
|
|
individual upload operation::
|
|
|
|
[
|
|
'/path/to/file',
|
|
SwiftUploadObject('/path', object_name='obj1'),
|
|
...
|
|
]
|
|
|
|
The options dict is as described below.
|
|
|
|
The SwiftUploadObject source may be one of:
|
|
|
|
file - A file like object (with a read method)
|
|
path - A string containing the path to a local file
|
|
or directory
|
|
None - Indicates that we want an empty object
|
|
|
|
:param options: A dictionary containing options to override the global
|
|
options specified during the service object creation.
|
|
These options are applied to all upload operations
|
|
performed by this call, unless overridden on a per
|
|
object basis. Possible options are given below::
|
|
|
|
{
|
|
'meta': [],
|
|
'header': [],
|
|
'segment_size': None,
|
|
'use_slo': False,
|
|
'segment_container': None,
|
|
'leave_segments': False,
|
|
'changed': None,
|
|
'skip_identical': False,
|
|
'fail_fast': False,
|
|
'dir_marker': False # Only for None sources
|
|
}
|
|
|
|
:returns: A generator for returning the results of the uploads.
|
|
|
|
:raises: SwiftError
|
|
:raises: ClientException
|
|
"""
|
|
if options is not None:
|
|
options = dict(self._options, **options)
|
|
else:
|
|
options = self._options
|
|
|
|
try:
|
|
segment_size = int(0 if options['segment_size'] is None else
|
|
options['segment_size'])
|
|
except ValueError:
|
|
raise SwiftError('Segment size should be an integer value')
|
|
|
|
# Try to create the container, just in case it doesn't exist. If this
|
|
# fails, it might just be because the user doesn't have container PUT
|
|
# permissions, so we'll ignore any error. If there's really a problem,
|
|
# it'll surface on the first object PUT.
|
|
policy_header = {}
|
|
_header = split_headers(options["header"])
|
|
if POLICY in _header:
|
|
policy_header[POLICY] = \
|
|
_header[POLICY]
|
|
create_containers = [
|
|
self.thread_manager.container_pool.submit(
|
|
self._create_container_job, container, headers=policy_header
|
|
)
|
|
]
|
|
|
|
# wait for first container job to complete before possibly attempting
|
|
# segment container job because segment container job may attempt
|
|
# to HEAD the first container
|
|
for r in interruptable_as_completed(create_containers):
|
|
res = r.result()
|
|
yield res
|
|
|
|
if segment_size:
|
|
seg_container = container + '_segments'
|
|
if options['segment_container']:
|
|
seg_container = options['segment_container']
|
|
if seg_container != container:
|
|
if not policy_header:
|
|
# Since no storage policy was specified on the command
|
|
# line, rather than just letting swift pick the default
|
|
# storage policy, we'll try to create the segments
|
|
# container with the same policy as the upload container
|
|
create_containers = [
|
|
self.thread_manager.container_pool.submit(
|
|
self._create_container_job, seg_container,
|
|
policy_source=container
|
|
)
|
|
]
|
|
else:
|
|
create_containers = [
|
|
self.thread_manager.container_pool.submit(
|
|
self._create_container_job, seg_container,
|
|
headers=policy_header
|
|
)
|
|
]
|
|
|
|
for r in interruptable_as_completed(create_containers):
|
|
res = r.result()
|
|
yield res
|
|
|
|
# We maintain a results queue here and a separate thread to monitor
|
|
# the futures because we want to get results back from potential
|
|
# segment uploads too
|
|
rq = Queue()
|
|
file_jobs = {}
|
|
|
|
upload_objects = self._make_upload_objects(objects)
|
|
for upload_object in upload_objects:
|
|
s = upload_object.source
|
|
o = upload_object.object_name
|
|
o_opts = upload_object.options
|
|
details = {'action': 'upload', 'container': container}
|
|
if o_opts is not None:
|
|
object_options = deepcopy(options)
|
|
object_options.update(o_opts)
|
|
else:
|
|
object_options = options
|
|
if hasattr(s, 'read'):
|
|
# We've got a file like object to upload to o
|
|
file_future = self.thread_manager.object_uu_pool.submit(
|
|
self._upload_object_job, container, s, o, object_options
|
|
)
|
|
details['file'] = s
|
|
details['object'] = o
|
|
file_jobs[file_future] = details
|
|
elif s is not None:
|
|
# We've got a path to upload to o
|
|
details['path'] = s
|
|
details['object'] = o
|
|
if isdir(s):
|
|
dir_future = self.thread_manager.object_uu_pool.submit(
|
|
self._create_dir_marker_job, container, o,
|
|
object_options, path=s
|
|
)
|
|
file_jobs[dir_future] = details
|
|
else:
|
|
try:
|
|
stat(s)
|
|
file_future = \
|
|
self.thread_manager.object_uu_pool.submit(
|
|
self._upload_object_job, container, s, o,
|
|
object_options, results_queue=rq
|
|
)
|
|
file_jobs[file_future] = details
|
|
except OSError as err:
|
|
# Avoid tying up threads with jobs that will fail
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
res = {
|
|
'action': 'upload_object',
|
|
'container': container,
|
|
'object': o,
|
|
'success': False,
|
|
'error': err,
|
|
'traceback': traceback,
|
|
'error_timestamp': err_time,
|
|
'path': s
|
|
}
|
|
rq.put(res)
|
|
else:
|
|
# Create an empty object (as a dir marker if is_dir)
|
|
details['file'] = None
|
|
details['object'] = o
|
|
if object_options['dir_marker']:
|
|
dir_future = self.thread_manager.object_uu_pool.submit(
|
|
self._create_dir_marker_job, container, o,
|
|
object_options
|
|
)
|
|
file_jobs[dir_future] = details
|
|
else:
|
|
file_future = self.thread_manager.object_uu_pool.submit(
|
|
self._upload_object_job, container, StringIO(),
|
|
o, object_options
|
|
)
|
|
file_jobs[file_future] = details
|
|
|
|
# Start a thread to watch for upload results
|
|
Thread(
|
|
target=self._watch_futures, args=(file_jobs, rq)
|
|
).start()
|
|
|
|
# yield results as they become available, including those from
|
|
# segment uploads.
|
|
res = get_from_queue(rq)
|
|
cancelled = False
|
|
while res is not None:
|
|
yield res
|
|
|
|
if not res['success']:
|
|
if not cancelled and options['fail_fast']:
|
|
cancelled = True
|
|
for f in file_jobs:
|
|
f.cancel()
|
|
|
|
res = get_from_queue(rq)
|
|
|
|
@staticmethod
|
|
def _make_upload_objects(objects):
|
|
upload_objects = []
|
|
|
|
for o in objects:
|
|
if isinstance(o, string_types):
|
|
obj = SwiftUploadObject(o)
|
|
upload_objects.append(obj)
|
|
elif isinstance(o, SwiftUploadObject):
|
|
upload_objects.append(o)
|
|
else:
|
|
raise SwiftError(
|
|
"The upload operation takes only strings or "
|
|
"SwiftUploadObjects as input",
|
|
obj=o)
|
|
|
|
return upload_objects
|
|
|
|
@staticmethod
|
|
def _create_container_job(
|
|
conn, container, headers=None, policy_source=None):
|
|
"""
|
|
Create a container using the given connection
|
|
|
|
:param conn: The swift connection used for requests.
|
|
:param container: The container name to create.
|
|
:param headers: An optional dict of headers for the
|
|
put_container request.
|
|
:param policy_source: An optional name of a container whose policy we
|
|
should duplicate.
|
|
:return: A dict containing the results of the operation.
|
|
"""
|
|
res = {
|
|
'action': 'create_container',
|
|
'container': container,
|
|
'headers': headers
|
|
}
|
|
create_response = {}
|
|
try:
|
|
if policy_source is not None:
|
|
_meta = conn.head_container(policy_source)
|
|
if 'x-storage-policy' in _meta:
|
|
policy_header = {
|
|
POLICY: _meta.get('x-storage-policy')
|
|
}
|
|
if headers is None:
|
|
headers = policy_header
|
|
else:
|
|
headers.update(policy_header)
|
|
|
|
conn.put_container(
|
|
container, headers, response_dict=create_response
|
|
)
|
|
res.update({
|
|
'success': True,
|
|
'response_dict': create_response
|
|
})
|
|
except Exception as err:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
res.update({
|
|
'success': False,
|
|
'error': err,
|
|
'traceback': traceback,
|
|
'error_timestamp': err_time,
|
|
'response_dict': create_response
|
|
})
|
|
return res
|
|
|
|
@staticmethod
|
|
def _create_dir_marker_job(conn, container, obj, options, path=None):
|
|
res = {
|
|
'action': 'create_dir_marker',
|
|
'container': container,
|
|
'object': obj,
|
|
'path': path
|
|
}
|
|
results_dict = {}
|
|
if obj.startswith('./') or obj.startswith('.\\'):
|
|
obj = obj[2:]
|
|
if obj.startswith('/'):
|
|
obj = obj[1:]
|
|
if path is not None:
|
|
put_headers = {'x-object-meta-mtime': "%f" % getmtime(path)}
|
|
else:
|
|
put_headers = {'x-object-meta-mtime': "%f" % round(time())}
|
|
res['headers'] = put_headers
|
|
if options['changed']:
|
|
try:
|
|
headers = conn.head_object(container, obj)
|
|
ct = headers.get('content-type')
|
|
cl = int(headers.get('content-length'))
|
|
et = headers.get('etag')
|
|
mt = headers.get('x-object-meta-mtime')
|
|
|
|
if (ct.split(';', 1)[0] == 'text/directory' and
|
|
cl == 0 and
|
|
et == EMPTY_ETAG and
|
|
mt == put_headers['x-object-meta-mtime']):
|
|
res['success'] = True
|
|
return res
|
|
except ClientException as err:
|
|
if err.http_status != 404:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
res.update({
|
|
'success': False,
|
|
'error': err,
|
|
'traceback': traceback,
|
|
'error_timestamp': err_time
|
|
})
|
|
return res
|
|
try:
|
|
conn.put_object(container, obj, '', content_length=0,
|
|
content_type='text/directory',
|
|
headers=put_headers,
|
|
response_dict=results_dict)
|
|
res.update({
|
|
'success': True,
|
|
'response_dict': results_dict})
|
|
return res
|
|
except Exception as err:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
res.update({
|
|
'success': False,
|
|
'error': err,
|
|
'traceback': traceback,
|
|
'error_timestamp': err_time,
|
|
'response_dict': results_dict})
|
|
return res
|
|
|
|
@staticmethod
|
|
def _upload_segment_job(conn, path, container, segment_name, segment_start,
|
|
segment_size, segment_index, obj_name, options,
|
|
results_queue=None):
|
|
results_dict = {}
|
|
if options['segment_container']:
|
|
segment_container = options['segment_container']
|
|
else:
|
|
segment_container = container + '_segments'
|
|
|
|
res = {
|
|
'action': 'upload_segment',
|
|
'for_object': obj_name,
|
|
'segment_index': segment_index,
|
|
'segment_size': segment_size,
|
|
'segment_location': '/%s/%s' % (segment_container,
|
|
segment_name),
|
|
'log_line': '%s segment %s' % (obj_name, segment_index),
|
|
}
|
|
try:
|
|
fp = open(path, 'rb')
|
|
fp.seek(segment_start)
|
|
|
|
contents = LengthWrapper(fp, segment_size, md5=options['checksum'])
|
|
etag = conn.put_object(segment_container,
|
|
segment_name, contents,
|
|
content_length=segment_size,
|
|
response_dict=results_dict)
|
|
|
|
if options['checksum'] and etag and etag != contents.get_md5sum():
|
|
raise SwiftError('Segment {0}: upload verification failed: '
|
|
'md5 mismatch, local {1} != remote {2} '
|
|
'(remote segment has not been removed)'
|
|
.format(segment_index,
|
|
contents.get_md5sum(),
|
|
etag))
|
|
|
|
res.update({
|
|
'success': True,
|
|
'response_dict': results_dict,
|
|
'segment_etag': etag,
|
|
'attempts': conn.attempts
|
|
})
|
|
|
|
if results_queue is not None:
|
|
results_queue.put(res)
|
|
return res
|
|
|
|
except Exception as err:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
res.update({
|
|
'success': False,
|
|
'error': err,
|
|
'traceback': traceback,
|
|
'error_timestamp': err_time,
|
|
'response_dict': results_dict,
|
|
'attempts': conn.attempts
|
|
})
|
|
|
|
if results_queue is not None:
|
|
results_queue.put(res)
|
|
return res
|
|
|
|
def _get_chunk_data(self, conn, container, obj, headers, manifest=None):
|
|
chunks = []
|
|
if 'x-object-manifest' in headers:
|
|
scontainer, sprefix = headers['x-object-manifest'].split('/', 1)
|
|
for part in self.list(scontainer, {'prefix': sprefix}):
|
|
if part["success"]:
|
|
chunks.extend(part["listing"])
|
|
else:
|
|
raise part["error"]
|
|
elif config_true_value(headers.get('x-static-large-object')):
|
|
if manifest is None:
|
|
headers, manifest = conn.get_object(
|
|
container, obj, query_string='multipart-manifest=get')
|
|
manifest = parse_api_response(headers, manifest)
|
|
for chunk in manifest:
|
|
if chunk.get('sub_slo'):
|
|
scont, sobj = chunk['name'].lstrip('/').split('/', 1)
|
|
chunks.extend(self._get_chunk_data(
|
|
conn, scont, sobj, {'x-static-large-object': True}))
|
|
else:
|
|
chunks.append(chunk)
|
|
else:
|
|
chunks.append({'hash': headers.get('etag').strip('"'),
|
|
'bytes': int(headers.get('content-length'))})
|
|
return chunks
|
|
|
|
def _is_identical(self, chunk_data, path):
|
|
try:
|
|
fp = open(path, 'rb')
|
|
except IOError:
|
|
return False
|
|
|
|
with fp:
|
|
for chunk in chunk_data:
|
|
to_read = chunk['bytes']
|
|
md5sum = md5()
|
|
while to_read:
|
|
data = fp.read(min(65536, to_read))
|
|
if not data:
|
|
return False
|
|
md5sum.update(data)
|
|
to_read -= len(data)
|
|
if md5sum.hexdigest() != chunk['hash']:
|
|
return False
|
|
# Each chunk is verified; check that we're at the end of the file
|
|
return not fp.read(1)
|
|
|
|
def _upload_object_job(self, conn, container, source, obj, options,
|
|
results_queue=None):
|
|
if obj.startswith('./') or obj.startswith('.\\'):
|
|
obj = obj[2:]
|
|
if obj.startswith('/'):
|
|
obj = obj[1:]
|
|
res = {
|
|
'action': 'upload_object',
|
|
'container': container,
|
|
'object': obj
|
|
}
|
|
if hasattr(source, 'read'):
|
|
stream = source
|
|
path = None
|
|
else:
|
|
path = source
|
|
res['path'] = path
|
|
try:
|
|
if path is not None:
|
|
put_headers = {'x-object-meta-mtime': "%f" % getmtime(path)}
|
|
else:
|
|
put_headers = {'x-object-meta-mtime': "%f" % round(time())}
|
|
|
|
res['headers'] = put_headers
|
|
|
|
# We need to HEAD all objects now in case we're overwriting a
|
|
# manifest object and need to delete the old segments
|
|
# ourselves.
|
|
old_manifest = None
|
|
old_slo_manifest_paths = []
|
|
new_slo_manifest_paths = set()
|
|
segment_size = int(0 if options['segment_size'] is None
|
|
else options['segment_size'])
|
|
if (options['changed'] or options['skip_identical']
|
|
or not options['leave_segments']):
|
|
try:
|
|
headers = conn.head_object(container, obj)
|
|
is_slo = config_true_value(
|
|
headers.get('x-static-large-object'))
|
|
|
|
if options['skip_identical'] or (
|
|
is_slo and not options['leave_segments']):
|
|
chunk_data = self._get_chunk_data(
|
|
conn, container, obj, headers)
|
|
|
|
if options['skip_identical'] and self._is_identical(
|
|
chunk_data, path):
|
|
res.update({
|
|
'success': True,
|
|
'status': 'skipped-identical'
|
|
})
|
|
return res
|
|
|
|
cl = int(headers.get('content-length'))
|
|
mt = headers.get('x-object-meta-mtime')
|
|
if (path is not None and options['changed']
|
|
and cl == getsize(path)
|
|
and mt == put_headers['x-object-meta-mtime']):
|
|
res.update({
|
|
'success': True,
|
|
'status': 'skipped-changed'
|
|
})
|
|
return res
|
|
if not options['leave_segments']:
|
|
old_manifest = headers.get('x-object-manifest')
|
|
if is_slo:
|
|
for old_seg in chunk_data:
|
|
seg_path = old_seg['name'].lstrip('/')
|
|
if isinstance(seg_path, text_type):
|
|
seg_path = seg_path.encode('utf-8')
|
|
old_slo_manifest_paths.append(seg_path)
|
|
except ClientException as err:
|
|
if err.http_status != 404:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
res.update({
|
|
'success': False,
|
|
'error': err,
|
|
'traceback': traceback,
|
|
'error_timestamp': err_time
|
|
})
|
|
return res
|
|
|
|
# Merge the command line header options to the put_headers
|
|
put_headers.update(split_headers(options['header'], ''))
|
|
|
|
# Don't do segment job if object is not big enough, and never do
|
|
# a segment job if we're reading from a stream - we may fail if we
|
|
# go over the single object limit, but this gives us a nice way
|
|
# to create objects from memory
|
|
if (path is not None and segment_size
|
|
and (getsize(path) > segment_size)):
|
|
res['large_object'] = True
|
|
seg_container = container + '_segments'
|
|
if options['segment_container']:
|
|
seg_container = options['segment_container']
|
|
full_size = getsize(path)
|
|
|
|
segment_futures = []
|
|
segment_pool = self.thread_manager.segment_pool
|
|
segment = 0
|
|
segment_start = 0
|
|
|
|
while segment_start < full_size:
|
|
if segment_start + segment_size > full_size:
|
|
segment_size = full_size - segment_start
|
|
if options['use_slo']:
|
|
segment_name = '%s/slo/%s/%s/%s/%08d' % (
|
|
obj, put_headers['x-object-meta-mtime'],
|
|
full_size, options['segment_size'], segment
|
|
)
|
|
else:
|
|
segment_name = '%s/%s/%s/%s/%08d' % (
|
|
obj, put_headers['x-object-meta-mtime'],
|
|
full_size, options['segment_size'], segment
|
|
)
|
|
seg = segment_pool.submit(
|
|
self._upload_segment_job, path, container,
|
|
segment_name, segment_start, segment_size, segment,
|
|
obj, options, results_queue=results_queue
|
|
)
|
|
segment_futures.append(seg)
|
|
segment += 1
|
|
segment_start += segment_size
|
|
|
|
segment_results = []
|
|
errors = False
|
|
exceptions = []
|
|
for f in interruptable_as_completed(segment_futures):
|
|
try:
|
|
r = f.result()
|
|
if not r['success']:
|
|
errors = True
|
|
segment_results.append(r)
|
|
except Exception as err:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
errors = True
|
|
exceptions.append((err, traceback, err_time))
|
|
if errors:
|
|
err = ClientException(
|
|
'Aborting manifest creation '
|
|
'because not all segments could be uploaded. %s/%s'
|
|
% (container, obj))
|
|
res.update({
|
|
'success': False,
|
|
'error': err,
|
|
'exceptions': exceptions,
|
|
'segment_results': segment_results
|
|
})
|
|
return res
|
|
|
|
res['segment_results'] = segment_results
|
|
|
|
if options['use_slo']:
|
|
segment_results.sort(key=lambda di: di['segment_index'])
|
|
for seg in segment_results:
|
|
seg_loc = seg['segment_location'].lstrip('/')
|
|
if isinstance(seg_loc, text_type):
|
|
seg_loc = seg_loc.encode('utf-8')
|
|
new_slo_manifest_paths.add(seg_loc)
|
|
|
|
manifest_data = json.dumps([
|
|
{
|
|
'path': d['segment_location'],
|
|
'etag': d['segment_etag'],
|
|
'size_bytes': d['segment_size']
|
|
} for d in segment_results
|
|
])
|
|
|
|
put_headers['x-static-large-object'] = 'true'
|
|
mr = {}
|
|
conn.put_object(
|
|
container, obj, manifest_data,
|
|
headers=put_headers,
|
|
query_string='multipart-manifest=put',
|
|
response_dict=mr
|
|
)
|
|
res['manifest_response_dict'] = mr
|
|
else:
|
|
new_object_manifest = '%s/%s/%s/%s/%s/' % (
|
|
quote(seg_container), quote(obj),
|
|
put_headers['x-object-meta-mtime'], full_size,
|
|
options['segment_size'])
|
|
if old_manifest and old_manifest.rstrip('/') == \
|
|
new_object_manifest.rstrip('/'):
|
|
old_manifest = None
|
|
put_headers['x-object-manifest'] = new_object_manifest
|
|
mr = {}
|
|
conn.put_object(
|
|
container, obj, '', content_length=0,
|
|
headers=put_headers,
|
|
response_dict=mr
|
|
)
|
|
res['manifest_response_dict'] = mr
|
|
else:
|
|
res['large_object'] = False
|
|
obr = {}
|
|
if path is not None:
|
|
content_length = getsize(path)
|
|
contents = LengthWrapper(open(path, 'rb'),
|
|
content_length,
|
|
md5=options['checksum'])
|
|
else:
|
|
content_length = None
|
|
contents = ReadableToIterable(stream,
|
|
md5=options['checksum'])
|
|
|
|
etag = conn.put_object(
|
|
container, obj, contents,
|
|
content_length=content_length, headers=put_headers,
|
|
response_dict=obr
|
|
)
|
|
res['response_dict'] = obr
|
|
|
|
if (options['checksum'] and
|
|
etag and etag != contents.get_md5sum()):
|
|
raise SwiftError('Object upload verification failed: '
|
|
'md5 mismatch, local {0} != remote {1} '
|
|
'(remote object has not been removed)'
|
|
.format(contents.get_md5sum(), etag))
|
|
|
|
if old_manifest or old_slo_manifest_paths:
|
|
drs = []
|
|
delobjsmap = {}
|
|
if old_manifest:
|
|
scontainer, sprefix = old_manifest.split('/', 1)
|
|
scontainer = unquote(scontainer)
|
|
sprefix = unquote(sprefix).rstrip('/') + '/'
|
|
delobjsmap[scontainer] = []
|
|
for part in self.list(scontainer, {'prefix': sprefix}):
|
|
if not part["success"]:
|
|
raise part["error"]
|
|
delobjsmap[scontainer].extend(
|
|
seg['name'] for seg in part['listing'])
|
|
|
|
if old_slo_manifest_paths:
|
|
for seg_to_delete in old_slo_manifest_paths:
|
|
if seg_to_delete in new_slo_manifest_paths:
|
|
continue
|
|
scont, sobj = \
|
|
seg_to_delete.split(b'/', 1)
|
|
delobjs_cont = delobjsmap.get(scont, [])
|
|
delobjs_cont.append(sobj)
|
|
delobjsmap[scont] = delobjs_cont
|
|
|
|
del_segs = []
|
|
for dscont, dsobjs in delobjsmap.items():
|
|
for dsobj in dsobjs:
|
|
del_seg = self.thread_manager.segment_pool.submit(
|
|
self._delete_segment, dscont, dsobj,
|
|
results_queue=results_queue
|
|
)
|
|
del_segs.append(del_seg)
|
|
|
|
for del_seg in interruptable_as_completed(del_segs):
|
|
drs.append(del_seg.result())
|
|
res['segment_delete_results'] = drs
|
|
|
|
# return dict for printing
|
|
res.update({
|
|
'success': True,
|
|
'status': 'uploaded',
|
|
'attempts': conn.attempts})
|
|
return res
|
|
|
|
except OSError as err:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
if err.errno == ENOENT:
|
|
error = SwiftError('Local file %r not found' % path, exc=err)
|
|
else:
|
|
error = err
|
|
res.update({
|
|
'success': False,
|
|
'error': error,
|
|
'traceback': traceback,
|
|
'error_timestamp': err_time
|
|
})
|
|
except Exception as err:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
res.update({
|
|
'success': False,
|
|
'error': err,
|
|
'traceback': traceback,
|
|
'error_timestamp': err_time
|
|
})
|
|
return res
|
|
|
|
# Delete related methods
|
|
#
|
|
def delete(self, container=None, objects=None, options=None):
|
|
"""
|
|
Delete operations on an account, optional container and optional list
|
|
of objects.
|
|
|
|
:param container: The container to delete or delete from.
|
|
:param objects: The list of objects to delete.
|
|
:param options: A dictionary containing options to override the global
|
|
options specified during the service object creation::
|
|
|
|
{
|
|
'yes_all': False,
|
|
'leave_segments': False,
|
|
}
|
|
|
|
:returns: A generator for returning the results of the delete
|
|
operations. Each result yielded from the generator is either
|
|
a 'delete_container', 'delete_object' or 'delete_segment'
|
|
dictionary containing the results of an individual delete
|
|
operation.
|
|
|
|
:raises: ClientException
|
|
:raises: SwiftError
|
|
"""
|
|
if options is not None:
|
|
options = dict(self._options, **options)
|
|
else:
|
|
options = self._options
|
|
|
|
rq = Queue()
|
|
if container is not None:
|
|
if objects is not None:
|
|
obj_dels = {}
|
|
for obj in objects:
|
|
obj_del = self.thread_manager.object_dd_pool.submit(
|
|
self._delete_object, container, obj, options,
|
|
results_queue=rq
|
|
)
|
|
obj_details = {'container': container, 'object': obj}
|
|
obj_dels[obj_del] = obj_details
|
|
|
|
# Start a thread to watch for upload results
|
|
Thread(
|
|
target=self._watch_futures, args=(obj_dels, rq)
|
|
).start()
|
|
|
|
# yield results as they become available, raising the first
|
|
# encountered exception
|
|
res = get_from_queue(rq)
|
|
while res is not None:
|
|
yield res
|
|
|
|
# Cancel the remaining jobs if necessary
|
|
if options['fail_fast'] and not res['success']:
|
|
for d in obj_dels.keys():
|
|
d.cancel()
|
|
|
|
res = get_from_queue(rq)
|
|
else:
|
|
for res in self._delete_container(container, options):
|
|
yield res
|
|
else:
|
|
if objects:
|
|
raise SwiftError('Objects specified without container')
|
|
if options['yes_all']:
|
|
cancelled = False
|
|
containers = []
|
|
for part in self.list():
|
|
if part["success"]:
|
|
containers.extend(c['name'] for c in part['listing'])
|
|
else:
|
|
raise part["error"]
|
|
|
|
for con in containers:
|
|
if cancelled:
|
|
break
|
|
else:
|
|
for res in self._delete_container(
|
|
con, options=options):
|
|
yield res
|
|
|
|
# Cancel the remaining container deletes, but yield
|
|
# any pending results
|
|
if (not cancelled and options['fail_fast']
|
|
and not res['success']):
|
|
cancelled = True
|
|
|
|
@staticmethod
|
|
def _delete_segment(conn, container, obj, results_queue=None):
|
|
results_dict = {}
|
|
try:
|
|
conn.delete_object(container, obj, response_dict=results_dict)
|
|
res = {'success': True}
|
|
except Exception as err:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
res = {
|
|
'success': False,
|
|
'error': err,
|
|
'traceback': traceback,
|
|
'error_timestamp': err_time
|
|
}
|
|
|
|
res.update({
|
|
'action': 'delete_segment',
|
|
'container': container,
|
|
'object': obj,
|
|
'attempts': conn.attempts,
|
|
'response_dict': results_dict
|
|
})
|
|
|
|
if results_queue is not None:
|
|
results_queue.put(res)
|
|
return res
|
|
|
|
def _delete_object(self, conn, container, obj, options,
|
|
results_queue=None):
|
|
res = {
|
|
'action': 'delete_object',
|
|
'container': container,
|
|
'object': obj
|
|
}
|
|
try:
|
|
old_manifest = None
|
|
query_string = None
|
|
|
|
if not options['leave_segments']:
|
|
try:
|
|
headers = conn.head_object(container, obj)
|
|
old_manifest = headers.get('x-object-manifest')
|
|
if config_true_value(headers.get('x-static-large-object')):
|
|
query_string = 'multipart-manifest=delete'
|
|
except ClientException as err:
|
|
if err.http_status != 404:
|
|
raise
|
|
|
|
results_dict = {}
|
|
conn.delete_object(container, obj, query_string=query_string,
|
|
response_dict=results_dict)
|
|
|
|
if old_manifest:
|
|
|
|
dlo_segments_deleted = True
|
|
segment_pool = self.thread_manager.segment_pool
|
|
s_container, s_prefix = old_manifest.split('/', 1)
|
|
s_container = unquote(s_container)
|
|
s_prefix = unquote(s_prefix).rstrip('/') + '/'
|
|
|
|
del_segs = []
|
|
for part in self.list(
|
|
container=s_container, options={'prefix': s_prefix}):
|
|
if part["success"]:
|
|
seg_list = [o["name"] for o in part["listing"]]
|
|
else:
|
|
raise part["error"]
|
|
|
|
for seg in seg_list:
|
|
del_seg = segment_pool.submit(
|
|
self._delete_segment, s_container,
|
|
seg, results_queue=results_queue
|
|
)
|
|
del_segs.append(del_seg)
|
|
|
|
for del_seg in interruptable_as_completed(del_segs):
|
|
del_res = del_seg.result()
|
|
if not del_res["success"]:
|
|
dlo_segments_deleted = False
|
|
|
|
res['dlo_segments_deleted'] = dlo_segments_deleted
|
|
|
|
res.update({
|
|
'success': True,
|
|
'response_dict': results_dict,
|
|
'attempts': conn.attempts,
|
|
})
|
|
|
|
except Exception as err:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
res.update({
|
|
'success': False,
|
|
'error': err,
|
|
'traceback': traceback,
|
|
'error_timestamp': err_time
|
|
})
|
|
return res
|
|
|
|
return res
|
|
|
|
@staticmethod
|
|
def _delete_empty_container(conn, container):
|
|
results_dict = {}
|
|
try:
|
|
conn.delete_container(container, response_dict=results_dict)
|
|
res = {'success': True}
|
|
except Exception as err:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
res = {
|
|
'success': False,
|
|
'error': err,
|
|
'traceback': traceback,
|
|
'error_timestamp': err_time
|
|
}
|
|
|
|
res.update({
|
|
'action': 'delete_container',
|
|
'container': container,
|
|
'object': None,
|
|
'attempts': conn.attempts,
|
|
'response_dict': results_dict
|
|
})
|
|
return res
|
|
|
|
def _delete_container(self, container, options):
|
|
try:
|
|
for part in self.list(container=container):
|
|
if part["success"]:
|
|
objs = [o['name'] for o in part['listing']]
|
|
|
|
o_dels = self.delete(
|
|
container=container, objects=objs, options=options
|
|
)
|
|
for res in o_dels:
|
|
yield res
|
|
else:
|
|
raise part["error"]
|
|
|
|
con_del = self.thread_manager.container_pool.submit(
|
|
self._delete_empty_container, container
|
|
)
|
|
con_del_res = get_future_result(con_del)
|
|
|
|
except Exception as err:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
con_del_res = {
|
|
'action': 'delete_container',
|
|
'container': container,
|
|
'object': None,
|
|
'success': False,
|
|
'error': err,
|
|
'traceback': traceback,
|
|
'error_timestamp': err_time
|
|
}
|
|
|
|
yield con_del_res
|
|
|
|
# Capabilities related methods
|
|
#
|
|
def capabilities(self, url=None):
|
|
"""
|
|
List the cluster capabilities.
|
|
|
|
:param url: Proxy URL of the cluster to retrieve capabilities.
|
|
|
|
:returns: A dictionary containing the capabilities of the cluster.
|
|
|
|
:raises: ClientException
|
|
:raises: SwiftError
|
|
"""
|
|
res = {
|
|
'action': 'capabilities'
|
|
}
|
|
|
|
try:
|
|
cap = self.thread_manager.container_pool.submit(
|
|
self._get_capabilities, url
|
|
)
|
|
capabilities = get_future_result(cap)
|
|
res.update({
|
|
'success': True,
|
|
'capabilities': capabilities
|
|
})
|
|
if url is not None:
|
|
res.update({
|
|
'url': url
|
|
})
|
|
except ClientException as err:
|
|
if err.http_status != 404:
|
|
raise err
|
|
raise SwiftError('Account not found', exc=err)
|
|
|
|
return res
|
|
|
|
@staticmethod
|
|
def _get_capabilities(conn, url):
|
|
return conn.get_capabilities(url)
|
|
|
|
# Helper methods
|
|
#
|
|
@staticmethod
|
|
def _watch_futures(futures, result_queue):
|
|
"""
|
|
Watches a dict of futures and pushes their results onto the given
|
|
queue. We use this to wait for a set of futures which may create
|
|
futures of their own to wait for, whilst also allowing us to
|
|
immediately return the results of those sub-jobs.
|
|
|
|
When all futures have completed, None is pushed to the queue
|
|
|
|
If the future is cancelled, we use the dict to return details about
|
|
the cancellation.
|
|
"""
|
|
futures_only = list(futures.keys())
|
|
for f in interruptable_as_completed(futures_only):
|
|
try:
|
|
r = f.result()
|
|
if r is not None:
|
|
result_queue.put(r)
|
|
except CancelledError:
|
|
details = futures[f]
|
|
res = details
|
|
res['status'] = 'cancelled'
|
|
result_queue.put(res)
|
|
except Exception as err:
|
|
traceback, err_time = report_traceback()
|
|
logger.exception(err)
|
|
details = futures[f]
|
|
res = details
|
|
res.update({
|
|
'success': False,
|
|
'error': err,
|
|
'traceback': traceback,
|
|
'error_timestamp': err_time
|
|
})
|
|
result_queue.put(res)
|
|
|
|
result_queue.put(None)
|