615 lines
28 KiB
Python
615 lines
28 KiB
Python
# Copyright (c) 2013 OpenStack Foundation
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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 tarfile
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from urllib import quote, unquote
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from xml.sax import saxutils
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from time import time
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from eventlet import sleep
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import zlib
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from swift.common.swob import Request, HTTPBadGateway, \
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HTTPCreated, HTTPBadRequest, HTTPNotFound, HTTPUnauthorized, HTTPOk, \
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HTTPPreconditionFailed, HTTPRequestEntityTooLarge, HTTPNotAcceptable, \
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HTTPLengthRequired, HTTPException, HTTPServerError, wsgify
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from swift.common.utils import json, get_logger, register_swift_info
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from swift.common import constraints
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from swift.common.http import HTTP_UNAUTHORIZED, HTTP_NOT_FOUND, HTTP_CONFLICT
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class CreateContainerError(Exception):
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def __init__(self, msg, status_int, status):
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self.status_int = status_int
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self.status = status
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Exception.__init__(self, msg)
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ACCEPTABLE_FORMATS = ['text/plain', 'application/json', 'application/xml',
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'text/xml']
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def get_response_body(data_format, data_dict, error_list):
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"""
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Returns a properly formatted response body according to format. Handles
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json and xml, otherwise will return text/plain. Note: xml response does not
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include xml declaration.
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:params data_format: resulting format
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:params data_dict: generated data about results.
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:params error_list: list of quoted filenames that failed
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"""
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if data_format == 'application/json':
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data_dict['Errors'] = error_list
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return json.dumps(data_dict)
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if data_format and data_format.endswith('/xml'):
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output = '<delete>\n'
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for key in sorted(data_dict):
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xml_key = key.replace(' ', '_').lower()
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output += '<%s>%s</%s>\n' % (xml_key, data_dict[key], xml_key)
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output += '<errors>\n'
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output += '\n'.join(
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['<object>'
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'<name>%s</name><status>%s</status>'
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'</object>' % (saxutils.escape(name), status) for
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name, status in error_list])
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output += '</errors>\n</delete>\n'
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return output
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output = ''
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for key in sorted(data_dict):
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output += '%s: %s\n' % (key, data_dict[key])
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output += 'Errors:\n'
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output += '\n'.join(
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['%s, %s' % (name, status)
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for name, status in error_list])
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return output
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def pax_key_to_swift_header(pax_key):
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if (pax_key == u"SCHILY.xattr.user.mime_type" or
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pax_key == u"LIBARCHIVE.xattr.user.mime_type"):
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return "Content-Type"
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elif pax_key.startswith(u"SCHILY.xattr.user.meta."):
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useful_part = pax_key[len(u"SCHILY.xattr.user.meta."):]
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return "X-Object-Meta-" + useful_part.encode("utf-8")
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elif pax_key.startswith(u"LIBARCHIVE.xattr.user.meta."):
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useful_part = pax_key[len(u"LIBARCHIVE.xattr.user.meta."):]
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return "X-Object-Meta-" + useful_part.encode("utf-8")
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else:
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# You can get things like atime/mtime/ctime or filesystem ACLs in
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# pax headers; those aren't really user metadata. The same goes for
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# other, non-user metadata.
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return None
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class Bulk(object):
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"""
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Middleware that will do many operations on a single request.
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Extract Archive:
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Expand tar files into a swift account. Request must be a PUT with the
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query parameter ?extract-archive=format specifying the format of archive
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file. Accepted formats are tar, tar.gz, and tar.bz2.
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For a PUT to the following url:
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/v1/AUTH_Account/$UPLOAD_PATH?extract-archive=tar.gz
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UPLOAD_PATH is where the files will be expanded to. UPLOAD_PATH can be a
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container, a pseudo-directory within a container, or an empty string. The
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destination of a file in the archive will be built as follows:
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/v1/AUTH_Account/$UPLOAD_PATH/$FILE_PATH
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Where FILE_PATH is the file name from the listing in the tar file.
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If the UPLOAD_PATH is an empty string, containers will be auto created
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accordingly and files in the tar that would not map to any container (files
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in the base directory) will be ignored.
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Only regular files will be uploaded. Empty directories, symlinks, etc will
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not be uploaded.
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The response from bulk operations functions differently from other swift
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responses. This is because a short request body sent from the client could
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result in many operations on the proxy server and precautions need to be
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made to prevent the request from timing out due to lack of activity. To
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this end, the client will always receive a 200 OK response, regardless of
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the actual success of the call. The body of the response must be parsed to
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determine the actual success of the operation. In addition to this the
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client may receive zero or more whitespace characters prepended to the
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actual response body while the proxy server is completing the request.
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The format of the response body defaults to text/plain but can be either
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json or xml depending on the Accept header. Acceptable formats are
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text/plain, application/json, application/xml, and text/xml. An example
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body is as follows:
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{"Response Status": "201 Created",
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"Response Body": "",
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"Errors": [],
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"Number Files Created": 10}
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If all valid files were uploaded successfully the Response Status will be
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201 Created. If any files failed to be created the response code
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corresponds to the subrequest's error. Possible codes are 400, 401, 502 (on
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server errors), etc. In both cases the response body will specify the
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number of files successfully uploaded and a list of the files that failed.
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There are proxy logs created for each file (which becomes a subrequest) in
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the tar. The subrequest's proxy log will have a swift.source set to "EA"
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the log's content length will reflect the unzipped size of the file. If
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double proxy-logging is used the leftmost logger will not have a
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swift.source set and the content length will reflect the size of the
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payload sent to the proxy (the unexpanded size of the tar.gz).
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Bulk Delete:
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Will delete multiple objects or containers from their account with a
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single request. Responds to POST requests with query parameter
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?bulk-delete set. The request url is your storage url. The Content-Type
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should be set to text/plain. The body of the POST request will be a
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newline separated list of url encoded objects to delete. You can delete
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10,000 (configurable) objects per request. The objects specified in the
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POST request body must be URL encoded and in the form:
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/container_name/obj_name
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or for a container (which must be empty at time of delete)
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/container_name
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The response is similar to extract archive as in every response will be a
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200 OK and you must parse the response body for actual results. An example
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response is:
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{"Number Not Found": 0,
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"Response Status": "200 OK",
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"Response Body": "",
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"Errors": [],
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"Number Deleted": 6}
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If all items were successfully deleted (or did not exist), the Response
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Status will be 200 OK. If any failed to delete, the response code
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corresponds to the subrequest's error. Possible codes are 400, 401, 502 (on
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server errors), etc. In all cases the response body will specify the number
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of items successfully deleted, not found, and a list of those that failed.
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The return body will be formatted in the way specified in the request's
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Accept header. Acceptable formats are text/plain, application/json,
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application/xml, and text/xml.
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There are proxy logs created for each object or container (which becomes a
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subrequest) that is deleted. The subrequest's proxy log will have a
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swift.source set to "BD" the log's content length of 0. If double
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proxy-logging is used the leftmost logger will not have a
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swift.source set and the content length will reflect the size of the
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payload sent to the proxy (the list of objects/containers to be deleted).
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"""
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def __init__(self, app, conf, max_containers_per_extraction=10000,
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max_failed_extractions=1000, max_deletes_per_request=10000,
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max_failed_deletes=1000, yield_frequency=10, retry_count=0,
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retry_interval=1.5, logger=None):
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self.app = app
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self.logger = logger or get_logger(conf, log_route='bulk')
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self.max_containers = max_containers_per_extraction
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self.max_failed_extractions = max_failed_extractions
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self.max_failed_deletes = max_failed_deletes
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self.max_deletes_per_request = max_deletes_per_request
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self.yield_frequency = yield_frequency
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self.retry_count = retry_count
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self.retry_interval = retry_interval
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self.max_path_length = constraints.MAX_OBJECT_NAME_LENGTH \
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+ constraints.MAX_CONTAINER_NAME_LENGTH + 2
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def create_container(self, req, container_path):
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"""
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Checks if the container exists and if not try to create it.
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:params container_path: an unquoted path to a container to be created
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:returns: True if created container, False if container exists
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:raises: CreateContainerError when unable to create container
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"""
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new_env = req.environ.copy()
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new_env['PATH_INFO'] = container_path
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new_env['swift.source'] = 'EA'
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new_env['REQUEST_METHOD'] = 'HEAD'
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head_cont_req = Request.blank(container_path, environ=new_env)
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resp = head_cont_req.get_response(self.app)
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if resp.is_success:
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return False
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if resp.status_int == 404:
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new_env = req.environ.copy()
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new_env['PATH_INFO'] = container_path
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new_env['swift.source'] = 'EA'
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new_env['REQUEST_METHOD'] = 'PUT'
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create_cont_req = Request.blank(container_path, environ=new_env)
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resp = create_cont_req.get_response(self.app)
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if resp.is_success:
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return True
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raise CreateContainerError(
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"Create Container Failed: " + container_path,
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resp.status_int, resp.status)
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def get_objs_to_delete(self, req):
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"""
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Will populate objs_to_delete with data from request input.
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:params req: a Swob request
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:returns: a list of the contents of req.body when separated by newline.
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:raises: HTTPException on failures
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"""
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line = ''
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data_remaining = True
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objs_to_delete = []
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if req.content_length is None and \
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req.headers.get('transfer-encoding', '').lower() != 'chunked':
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raise HTTPLengthRequired(request=req)
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while data_remaining:
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if '\n' in line:
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obj_to_delete, line = line.split('\n', 1)
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obj_to_delete = obj_to_delete.strip()
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objs_to_delete.append(
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{'name': unquote(obj_to_delete)})
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else:
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data = req.body_file.read(self.max_path_length)
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if data:
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line += data
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else:
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data_remaining = False
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obj_to_delete = line.strip()
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if obj_to_delete:
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objs_to_delete.append(
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{'name': unquote(obj_to_delete)})
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if len(objs_to_delete) > self.max_deletes_per_request:
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raise HTTPRequestEntityTooLarge(
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'Maximum Bulk Deletes: %d per request' %
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self.max_deletes_per_request)
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if len(line) > self.max_path_length * 2:
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raise HTTPBadRequest('Invalid File Name')
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return objs_to_delete
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def handle_delete_iter(self, req, objs_to_delete=None,
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user_agent='BulkDelete', swift_source='BD',
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out_content_type='text/plain'):
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"""
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A generator that can be assigned to a swob Response's app_iter which,
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when iterated over, will delete the objects specified in request body.
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Will occasionally yield whitespace while request is being processed.
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When the request is completed will yield a response body that can be
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parsed to determine success. See above documentation for details.
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:params req: a swob Request
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:params objs_to_delete: a list of dictionaries that specifies the
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objects to be deleted. If None, uses self.get_objs_to_delete to
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query request.
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"""
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last_yield = time()
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separator = ''
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failed_files = []
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resp_dict = {'Response Status': HTTPOk().status,
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'Response Body': '',
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'Number Deleted': 0,
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'Number Not Found': 0}
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try:
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if not out_content_type:
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raise HTTPNotAcceptable(request=req)
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if out_content_type.endswith('/xml'):
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yield '<?xml version="1.0" encoding="UTF-8"?>\n'
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try:
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vrs, account, _junk = req.split_path(2, 3, True)
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except ValueError:
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raise HTTPNotFound(request=req)
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incoming_format = req.headers.get('Content-Type')
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if incoming_format and \
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not incoming_format.startswith('text/plain'):
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# For now only accept newline separated object names
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raise HTTPNotAcceptable(request=req)
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if objs_to_delete is None:
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objs_to_delete = self.get_objs_to_delete(req)
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failed_file_response = {'type': HTTPBadRequest}
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req.environ['eventlet.minimum_write_chunk_size'] = 0
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for obj_to_delete in objs_to_delete:
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if last_yield + self.yield_frequency < time():
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separator = '\r\n\r\n'
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last_yield = time()
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yield ' '
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obj_name = obj_to_delete['name']
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if not obj_name:
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continue
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if len(failed_files) >= self.max_failed_deletes:
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raise HTTPBadRequest('Max delete failures exceeded')
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if obj_to_delete.get('error'):
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if obj_to_delete['error']['code'] == HTTP_NOT_FOUND:
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resp_dict['Number Not Found'] += 1
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else:
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failed_files.append([quote(obj_name),
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obj_to_delete['error']['message']])
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continue
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delete_path = '/'.join(['', vrs, account,
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obj_name.lstrip('/')])
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if not constraints.check_utf8(delete_path):
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failed_files.append([quote(obj_name),
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HTTPPreconditionFailed().status])
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continue
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new_env = req.environ.copy()
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new_env['PATH_INFO'] = delete_path
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del(new_env['wsgi.input'])
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new_env['CONTENT_LENGTH'] = 0
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new_env['REQUEST_METHOD'] = 'DELETE'
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new_env['HTTP_USER_AGENT'] = \
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'%s %s' % (req.environ.get('HTTP_USER_AGENT'), user_agent)
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new_env['swift.source'] = swift_source
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self._process_delete(delete_path, obj_name, new_env, resp_dict,
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failed_files, failed_file_response)
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if failed_files:
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resp_dict['Response Status'] = \
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failed_file_response['type']().status
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elif not (resp_dict['Number Deleted'] or
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resp_dict['Number Not Found']):
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resp_dict['Response Status'] = HTTPBadRequest().status
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resp_dict['Response Body'] = 'Invalid bulk delete.'
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except HTTPException as err:
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resp_dict['Response Status'] = err.status
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resp_dict['Response Body'] = err.body
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except Exception:
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self.logger.exception('Error in bulk delete.')
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resp_dict['Response Status'] = HTTPServerError().status
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yield separator + get_response_body(out_content_type,
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resp_dict, failed_files)
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def handle_extract_iter(self, req, compress_type,
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out_content_type='text/plain'):
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"""
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A generator that can be assigned to a swob Response's app_iter which,
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when iterated over, will extract and PUT the objects pulled from the
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request body. Will occasionally yield whitespace while request is being
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processed. When the request is completed will yield a response body
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that can be parsed to determine success. See above documentation for
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details.
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:params req: a swob Request
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:params compress_type: specifying the compression type of the tar.
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Accepts '', 'gz', or 'bz2'
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"""
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resp_dict = {'Response Status': HTTPCreated().status,
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'Response Body': '', 'Number Files Created': 0}
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failed_files = []
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last_yield = time()
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separator = ''
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containers_accessed = set()
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try:
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if not out_content_type:
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raise HTTPNotAcceptable(request=req)
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if out_content_type.endswith('/xml'):
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yield '<?xml version="1.0" encoding="UTF-8"?>\n'
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if req.content_length is None and \
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req.headers.get('transfer-encoding',
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'').lower() != 'chunked':
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raise HTTPLengthRequired(request=req)
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try:
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vrs, account, extract_base = req.split_path(2, 3, True)
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except ValueError:
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raise HTTPNotFound(request=req)
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extract_base = extract_base or ''
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extract_base = extract_base.rstrip('/')
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tar = tarfile.open(mode='r|' + compress_type,
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fileobj=req.body_file)
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failed_response_type = HTTPBadRequest
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req.environ['eventlet.minimum_write_chunk_size'] = 0
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containers_created = 0
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while True:
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if last_yield + self.yield_frequency < time():
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separator = '\r\n\r\n'
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last_yield = time()
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yield ' '
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tar_info = next(tar)
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if tar_info is None or \
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len(failed_files) >= self.max_failed_extractions:
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break
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if tar_info.isfile():
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obj_path = tar_info.name
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if obj_path.startswith('./'):
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obj_path = obj_path[2:]
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obj_path = obj_path.lstrip('/')
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if extract_base:
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obj_path = extract_base + '/' + obj_path
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if '/' not in obj_path:
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continue # ignore base level file
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destination = '/'.join(
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['', vrs, account, obj_path])
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container = obj_path.split('/', 1)[0]
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if not constraints.check_utf8(destination):
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failed_files.append(
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[quote(obj_path[:self.max_path_length]),
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HTTPPreconditionFailed().status])
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continue
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if tar_info.size > constraints.MAX_FILE_SIZE:
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failed_files.append([
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quote(obj_path[:self.max_path_length]),
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HTTPRequestEntityTooLarge().status])
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continue
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container_failure = None
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if container not in containers_accessed:
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cont_path = '/'.join(['', vrs, account, container])
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try:
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if self.create_container(req, cont_path):
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containers_created += 1
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if containers_created > self.max_containers:
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raise HTTPBadRequest(
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'More than %d containers to create '
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'from tar.' % self.max_containers)
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except CreateContainerError as err:
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# the object PUT to this container still may
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# succeed if acls are set
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container_failure = [
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quote(cont_path[:self.max_path_length]),
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err.status]
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|
if err.status_int == HTTP_UNAUTHORIZED:
|
|
raise HTTPUnauthorized(request=req)
|
|
except ValueError:
|
|
failed_files.append([
|
|
quote(obj_path[:self.max_path_length]),
|
|
HTTPBadRequest().status])
|
|
continue
|
|
|
|
tar_file = tar.extractfile(tar_info)
|
|
new_env = req.environ.copy()
|
|
new_env['REQUEST_METHOD'] = 'PUT'
|
|
new_env['wsgi.input'] = tar_file
|
|
new_env['PATH_INFO'] = destination
|
|
new_env['CONTENT_LENGTH'] = tar_info.size
|
|
new_env['swift.source'] = 'EA'
|
|
new_env['HTTP_USER_AGENT'] = \
|
|
'%s BulkExpand' % req.environ.get('HTTP_USER_AGENT')
|
|
create_obj_req = Request.blank(destination, new_env)
|
|
|
|
for pax_key, pax_value in tar_info.pax_headers.items():
|
|
header_name = pax_key_to_swift_header(pax_key)
|
|
if header_name:
|
|
# Both pax_key and pax_value are unicode
|
|
# strings; the key is already UTF-8 encoded, but
|
|
# we still have to encode the value.
|
|
create_obj_req.headers[header_name] = \
|
|
pax_value.encode("utf-8")
|
|
|
|
resp = create_obj_req.get_response(self.app)
|
|
containers_accessed.add(container)
|
|
if resp.is_success:
|
|
resp_dict['Number Files Created'] += 1
|
|
else:
|
|
if container_failure:
|
|
failed_files.append(container_failure)
|
|
if resp.status_int == HTTP_UNAUTHORIZED:
|
|
failed_files.append([
|
|
quote(obj_path[:self.max_path_length]),
|
|
HTTPUnauthorized().status])
|
|
raise HTTPUnauthorized(request=req)
|
|
if resp.status_int // 100 == 5:
|
|
failed_response_type = HTTPBadGateway
|
|
failed_files.append([
|
|
quote(obj_path[:self.max_path_length]),
|
|
resp.status])
|
|
|
|
if failed_files:
|
|
resp_dict['Response Status'] = failed_response_type().status
|
|
elif not resp_dict['Number Files Created']:
|
|
resp_dict['Response Status'] = HTTPBadRequest().status
|
|
resp_dict['Response Body'] = 'Invalid Tar File: No Valid Files'
|
|
|
|
except HTTPException as err:
|
|
resp_dict['Response Status'] = err.status
|
|
resp_dict['Response Body'] = err.body
|
|
except (tarfile.TarError, zlib.error) as tar_error:
|
|
resp_dict['Response Status'] = HTTPBadRequest().status
|
|
resp_dict['Response Body'] = 'Invalid Tar File: %s' % tar_error
|
|
except Exception:
|
|
self.logger.exception('Error in extract archive.')
|
|
resp_dict['Response Status'] = HTTPServerError().status
|
|
|
|
yield separator + get_response_body(
|
|
out_content_type, resp_dict, failed_files)
|
|
|
|
def _process_delete(self, delete_path, obj_name, env, resp_dict,
|
|
failed_files, failed_file_response, retry=0):
|
|
delete_obj_req = Request.blank(delete_path, env)
|
|
resp = delete_obj_req.get_response(self.app)
|
|
if resp.status_int // 100 == 2:
|
|
resp_dict['Number Deleted'] += 1
|
|
elif resp.status_int == HTTP_NOT_FOUND:
|
|
resp_dict['Number Not Found'] += 1
|
|
elif resp.status_int == HTTP_UNAUTHORIZED:
|
|
failed_files.append([quote(obj_name),
|
|
HTTPUnauthorized().status])
|
|
elif resp.status_int == HTTP_CONFLICT and \
|
|
self.retry_count > 0 and self.retry_count > retry:
|
|
retry += 1
|
|
sleep(self.retry_interval ** retry)
|
|
self._process_delete(delete_path, obj_name, env, resp_dict,
|
|
failed_files, failed_file_response,
|
|
retry)
|
|
else:
|
|
if resp.status_int // 100 == 5:
|
|
failed_file_response['type'] = HTTPBadGateway
|
|
failed_files.append([quote(obj_name), resp.status])
|
|
|
|
@wsgify
|
|
def __call__(self, req):
|
|
extract_type = req.params.get('extract-archive')
|
|
resp = None
|
|
if extract_type is not None and req.method == 'PUT':
|
|
archive_type = {
|
|
'tar': '', 'tar.gz': 'gz',
|
|
'tar.bz2': 'bz2'}.get(extract_type.lower().strip('.'))
|
|
if archive_type is not None:
|
|
resp = HTTPOk(request=req)
|
|
out_content_type = req.accept.best_match(ACCEPTABLE_FORMATS)
|
|
if out_content_type:
|
|
resp.content_type = out_content_type
|
|
resp.app_iter = self.handle_extract_iter(
|
|
req, archive_type, out_content_type=out_content_type)
|
|
else:
|
|
resp = HTTPBadRequest("Unsupported archive format")
|
|
if 'bulk-delete' in req.params and req.method in ['POST', 'DELETE']:
|
|
resp = HTTPOk(request=req)
|
|
out_content_type = req.accept.best_match(ACCEPTABLE_FORMATS)
|
|
if out_content_type:
|
|
resp.content_type = out_content_type
|
|
resp.app_iter = self.handle_delete_iter(
|
|
req, out_content_type=out_content_type)
|
|
|
|
return resp or self.app
|
|
|
|
|
|
def filter_factory(global_conf, **local_conf):
|
|
conf = global_conf.copy()
|
|
conf.update(local_conf)
|
|
|
|
max_containers_per_extraction = \
|
|
int(conf.get('max_containers_per_extraction', 10000))
|
|
max_failed_extractions = int(conf.get('max_failed_extractions', 1000))
|
|
max_deletes_per_request = int(conf.get('max_deletes_per_request', 10000))
|
|
max_failed_deletes = int(conf.get('max_failed_deletes', 1000))
|
|
yield_frequency = int(conf.get('yield_frequency', 10))
|
|
retry_count = int(conf.get('delete_container_retry_count', 0))
|
|
retry_interval = 1.5
|
|
|
|
register_swift_info(
|
|
'bulk_upload',
|
|
max_containers_per_extraction=max_containers_per_extraction,
|
|
max_failed_extractions=max_failed_extractions)
|
|
register_swift_info(
|
|
'bulk_delete',
|
|
max_deletes_per_request=max_deletes_per_request,
|
|
max_failed_deletes=max_failed_deletes)
|
|
|
|
def bulk_filter(app):
|
|
return Bulk(
|
|
app, conf,
|
|
max_containers_per_extraction=max_containers_per_extraction,
|
|
max_failed_extractions=max_failed_extractions,
|
|
max_deletes_per_request=max_deletes_per_request,
|
|
max_failed_deletes=max_failed_deletes,
|
|
yield_frequency=yield_frequency,
|
|
retry_count=retry_count,
|
|
retry_interval=retry_interval)
|
|
return bulk_filter
|