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annotate planemo/lib/python3.7/site-packages/boto/gs/resumable_upload_handler.py @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
parents d30785e31577
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1 # Copyright 2010 Google Inc.
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2 #
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3 # Permission is hereby granted, free of charge, to any person obtaining a
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4 # copy of this software and associated documentation files (the
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5 # "Software"), to deal in the Software without restriction, including
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6 # without limitation the rights to use, copy, modify, merge, publish, dis-
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7 # tribute, sublicense, and/or sell copies of the Software, and to permit
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8 # persons to whom the Software is furnished to do so, subject to the fol-
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9 # lowing conditions:
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10 #
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11 # The above copyright notice and this permission notice shall be included
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12 # in all copies or substantial portions of the Software.
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13 #
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14 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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15 # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
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16 # ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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17 # SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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18 # WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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19 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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20 # IN THE SOFTWARE.
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21 import errno
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22 import httplib
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23 import os
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24 import random
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25 import re
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26 import socket
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27 import time
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28 import urlparse
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29 from hashlib import md5
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30 from boto import config, UserAgent
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31 from boto.connection import AWSAuthConnection
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32 from boto.exception import InvalidUriError
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33 from boto.exception import ResumableTransferDisposition
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34 from boto.exception import ResumableUploadException
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35 from boto.s3.keyfile import KeyFile
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36
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37 """
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38 Handler for Google Cloud Storage resumable uploads. See
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39 http://code.google.com/apis/storage/docs/developer-guide.html#resumable
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40 for details.
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41
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42 Resumable uploads will retry failed uploads, resuming at the byte
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43 count completed by the last upload attempt. If too many retries happen with
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44 no progress (per configurable num_retries param), the upload will be
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45 aborted in the current process.
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46
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47 The caller can optionally specify a tracker_file_name param in the
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48 ResumableUploadHandler constructor. If you do this, that file will
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49 save the state needed to allow retrying later, in a separate process
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50 (e.g., in a later run of gsutil).
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51 """
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52
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53
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54 class ResumableUploadHandler(object):
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55
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56 BUFFER_SIZE = 8192
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57 RETRYABLE_EXCEPTIONS = (httplib.HTTPException, IOError, socket.error,
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58 socket.gaierror)
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59
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60 # (start, end) response indicating server has nothing (upload protocol uses
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61 # inclusive numbering).
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62 SERVER_HAS_NOTHING = (0, -1)
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63
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64 def __init__(self, tracker_file_name=None, num_retries=None):
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65 """
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66 Constructor. Instantiate once for each uploaded file.
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67
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68 :type tracker_file_name: string
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69 :param tracker_file_name: optional file name to save tracker URI.
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70 If supplied and the current process fails the upload, it can be
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71 retried in a new process. If called with an existing file containing
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72 a valid tracker URI, we'll resume the upload from this URI; else
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73 we'll start a new resumable upload (and write the URI to this
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74 tracker file).
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75
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76 :type num_retries: int
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77 :param num_retries: the number of times we'll re-try a resumable upload
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78 making no progress. (Count resets every time we get progress, so
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79 upload can span many more than this number of retries.)
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80 """
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81 self.tracker_file_name = tracker_file_name
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82 self.num_retries = num_retries
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83 self.server_has_bytes = 0 # Byte count at last server check.
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84 self.tracker_uri = None
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85 if tracker_file_name:
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86 self._load_tracker_uri_from_file()
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87 # Save upload_start_point in instance state so caller can find how
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88 # much was transferred by this ResumableUploadHandler (across retries).
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89 self.upload_start_point = None
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90
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91 def _load_tracker_uri_from_file(self):
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92 f = None
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93 try:
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94 f = open(self.tracker_file_name, 'r')
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95 uri = f.readline().strip()
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96 self._set_tracker_uri(uri)
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97 except IOError as e:
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98 # Ignore non-existent file (happens first time an upload
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99 # is attempted on a file), but warn user for other errors.
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100 if e.errno != errno.ENOENT:
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101 # Will restart because self.tracker_uri is None.
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102 print('Couldn\'t read URI tracker file (%s): %s. Restarting '
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103 'upload from scratch.' %
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104 (self.tracker_file_name, e.strerror))
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105 except InvalidUriError as e:
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106 # Warn user, but proceed (will restart because
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107 # self.tracker_uri is None).
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108 print('Invalid tracker URI (%s) found in URI tracker file '
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109 '(%s). Restarting upload from scratch.' %
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110 (uri, self.tracker_file_name))
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111 finally:
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112 if f:
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113 f.close()
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114
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115 def _save_tracker_uri_to_file(self):
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116 """
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117 Saves URI to tracker file if one was passed to constructor.
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118 """
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119 if not self.tracker_file_name:
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120 return
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121 f = None
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122 try:
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123 with os.fdopen(os.open(self.tracker_file_name,
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124 os.O_WRONLY | os.O_CREAT, 0o600), 'w') as f:
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125 f.write(self.tracker_uri)
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126 except IOError as e:
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127 raise ResumableUploadException(
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128 'Couldn\'t write URI tracker file (%s): %s.\nThis can happen'
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129 'if you\'re using an incorrectly configured upload tool\n'
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130 '(e.g., gsutil configured to save tracker files to an '
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131 'unwritable directory)' %
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132 (self.tracker_file_name, e.strerror),
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133 ResumableTransferDisposition.ABORT)
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134
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135 def _set_tracker_uri(self, uri):
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136 """
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137 Called when we start a new resumable upload or get a new tracker
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138 URI for the upload. Saves URI and resets upload state.
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139
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140 Raises InvalidUriError if URI is syntactically invalid.
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141 """
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142 parse_result = urlparse.urlparse(uri)
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143 if (parse_result.scheme.lower() not in ['http', 'https'] or
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144 not parse_result.netloc):
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145 raise InvalidUriError('Invalid tracker URI (%s)' % uri)
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146 self.tracker_uri = uri
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147 self.tracker_uri_host = parse_result.netloc
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148 self.tracker_uri_path = '%s?%s' % (
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149 parse_result.path, parse_result.query)
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150 self.server_has_bytes = 0
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151
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152 def get_tracker_uri(self):
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153 """
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154 Returns upload tracker URI, or None if the upload has not yet started.
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155 """
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156 return self.tracker_uri
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157
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158 def get_upload_id(self):
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159 """
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160 Returns the upload ID for the resumable upload, or None if the upload
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161 has not yet started.
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162 """
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163 # We extract the upload_id from the tracker uri. We could retrieve the
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164 # upload_id from the headers in the response but this only works for
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165 # the case where we get the tracker uri from the service. In the case
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166 # where we get the tracker from the tracking file we need to do this
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167 # logic anyway.
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168 delim = '?upload_id='
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169 if self.tracker_uri and delim in self.tracker_uri:
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170 return self.tracker_uri[self.tracker_uri.index(delim) + len(delim):]
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171 else:
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172 return None
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173
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174 def _remove_tracker_file(self):
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175 if (self.tracker_file_name and
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176 os.path.exists(self.tracker_file_name)):
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177 os.unlink(self.tracker_file_name)
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178
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179 def _build_content_range_header(self, range_spec='*', length_spec='*'):
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180 return 'bytes %s/%s' % (range_spec, length_spec)
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181
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182 def _query_server_state(self, conn, file_length):
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183 """
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184 Queries server to find out state of given upload.
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185
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186 Note that this method really just makes special case use of the
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187 fact that the upload server always returns the current start/end
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188 state whenever a PUT doesn't complete.
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189
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190 Returns HTTP response from sending request.
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191
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192 Raises ResumableUploadException if problem querying server.
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193 """
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194 # Send an empty PUT so that server replies with this resumable
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195 # transfer's state.
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196 put_headers = {}
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197 put_headers['Content-Range'] = (
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198 self._build_content_range_header('*', file_length))
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199 put_headers['Content-Length'] = '0'
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200 return AWSAuthConnection.make_request(conn, 'PUT',
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201 path=self.tracker_uri_path,
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202 auth_path=self.tracker_uri_path,
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203 headers=put_headers,
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204 host=self.tracker_uri_host)
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205
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206 def _query_server_pos(self, conn, file_length):
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207 """
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208 Queries server to find out what bytes it currently has.
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209
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210 Returns (server_start, server_end), where the values are inclusive.
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211 For example, (0, 2) would mean that the server has bytes 0, 1, *and* 2.
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212
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213 Raises ResumableUploadException if problem querying server.
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214 """
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215 resp = self._query_server_state(conn, file_length)
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216 if resp.status == 200:
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217 # To handle the boundary condition where the server has the complete
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218 # file, we return (server_start, file_length-1). That way the
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219 # calling code can always simply read up through server_end. (If we
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220 # didn't handle this boundary condition here, the caller would have
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221 # to check whether server_end == file_length and read one fewer byte
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222 # in that case.)
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223 return (0, file_length - 1) # Completed upload.
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224 if resp.status != 308:
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225 # This means the server didn't have any state for the given
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226 # upload ID, which can happen (for example) if the caller saved
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227 # the tracker URI to a file and then tried to restart the transfer
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228 # after that upload ID has gone stale. In that case we need to
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229 # start a new transfer (and the caller will then save the new
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230 # tracker URI to the tracker file).
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231 raise ResumableUploadException(
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232 'Got non-308 response (%s) from server state query' %
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233 resp.status, ResumableTransferDisposition.START_OVER)
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234 got_valid_response = False
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235 range_spec = resp.getheader('range')
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236 if range_spec:
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237 # Parse 'bytes=<from>-<to>' range_spec.
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238 m = re.search('bytes=(\d+)-(\d+)', range_spec)
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239 if m:
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240 server_start = long(m.group(1))
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241 server_end = long(m.group(2))
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242 got_valid_response = True
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243 else:
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244 # No Range header, which means the server does not yet have
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245 # any bytes. Note that the Range header uses inclusive 'from'
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246 # and 'to' values. Since Range 0-0 would mean that the server
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247 # has byte 0, omitting the Range header is used to indicate that
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248 # the server doesn't have any bytes.
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249 return self.SERVER_HAS_NOTHING
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250 if not got_valid_response:
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251 raise ResumableUploadException(
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252 'Couldn\'t parse upload server state query response (%s)' %
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253 str(resp.getheaders()), ResumableTransferDisposition.START_OVER)
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254 if conn.debug >= 1:
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255 print('Server has: Range: %d - %d.' % (server_start, server_end))
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256 return (server_start, server_end)
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257
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258 def _start_new_resumable_upload(self, key, headers=None):
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259 """
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260 Starts a new resumable upload.
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261
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262 Raises ResumableUploadException if any errors occur.
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263 """
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264 conn = key.bucket.connection
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diff changeset
265 if conn.debug >= 1:
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266 print('Starting new resumable upload.')
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267 self.server_has_bytes = 0
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268
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269 # Start a new resumable upload by sending a POST request with an
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270 # empty body and the "X-Goog-Resumable: start" header. Include any
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271 # caller-provided headers (e.g., Content-Type) EXCEPT Content-Length
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272 # (and raise an exception if they tried to pass one, since it's
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273 # a semantic error to specify it at this point, and if we were to
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274 # include one now it would cause the server to expect that many
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275 # bytes; the POST doesn't include the actual file bytes We set
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276 # the Content-Length in the subsequent PUT, based on the uploaded
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277 # file size.
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278 post_headers = {}
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279 for k in headers:
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280 if k.lower() == 'content-length':
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281 raise ResumableUploadException(
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282 'Attempt to specify Content-Length header (disallowed)',
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283 ResumableTransferDisposition.ABORT)
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284 post_headers[k] = headers[k]
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285 post_headers[conn.provider.resumable_upload_header] = 'start'
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286
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287 resp = conn.make_request(
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288 'POST', key.bucket.name, key.name, post_headers)
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289 # Get tracker URI from response 'Location' header.
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290 body = resp.read()
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291
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292 # Check for various status conditions.
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293 if resp.status in [500, 503]:
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294 # Retry status 500 and 503 errors after a delay.
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295 raise ResumableUploadException(
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296 'Got status %d from attempt to start resumable upload. '
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297 'Will wait/retry' % resp.status,
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298 ResumableTransferDisposition.WAIT_BEFORE_RETRY)
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299 elif resp.status != 200 and resp.status != 201:
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300 raise ResumableUploadException(
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301 'Got status %d from attempt to start resumable upload. '
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302 'Aborting' % resp.status,
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303 ResumableTransferDisposition.ABORT)
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304
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305 # Else we got 200 or 201 response code, indicating the resumable
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306 # upload was created.
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307 tracker_uri = resp.getheader('Location')
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308 if not tracker_uri:
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309 raise ResumableUploadException(
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310 'No resumable tracker URI found in resumable initiation '
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311 'POST response (%s)' % body,
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312 ResumableTransferDisposition.WAIT_BEFORE_RETRY)
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313 self._set_tracker_uri(tracker_uri)
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314 self._save_tracker_uri_to_file()
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315
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316 def _upload_file_bytes(self, conn, http_conn, fp, file_length,
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317 total_bytes_uploaded, cb, num_cb, headers):
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318 """
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319 Makes one attempt to upload file bytes, using an existing resumable
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320 upload connection.
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321
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322 Returns (etag, generation, metageneration) from server upon success.
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323
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324 Raises ResumableUploadException if any problems occur.
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325 """
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326 buf = fp.read(self.BUFFER_SIZE)
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327 if cb:
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328 # The cb_count represents the number of full buffers to send between
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329 # cb executions.
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330 if num_cb > 2:
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331 cb_count = file_length / self.BUFFER_SIZE / (num_cb-2)
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332 elif num_cb < 0:
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333 cb_count = -1
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334 else:
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335 cb_count = 0
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336 i = 0
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337 cb(total_bytes_uploaded, file_length)
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338
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339 # Build resumable upload headers for the transfer. Don't send a
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340 # Content-Range header if the file is 0 bytes long, because the
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341 # resumable upload protocol uses an *inclusive* end-range (so, sending
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342 # 'bytes 0-0/1' would actually mean you're sending a 1-byte file).
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343 if not headers:
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344 put_headers = {}
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345 else:
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346 put_headers = headers.copy()
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347 if file_length:
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348 if total_bytes_uploaded == file_length:
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349 range_header = self._build_content_range_header(
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350 '*', file_length)
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351 else:
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352 range_header = self._build_content_range_header(
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353 '%d-%d' % (total_bytes_uploaded, file_length - 1),
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354 file_length)
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355 put_headers['Content-Range'] = range_header
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356 # Set Content-Length to the total bytes we'll send with this PUT.
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357 put_headers['Content-Length'] = str(file_length - total_bytes_uploaded)
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358 http_request = AWSAuthConnection.build_base_http_request(
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359 conn, 'PUT', path=self.tracker_uri_path, auth_path=None,
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360 headers=put_headers, host=self.tracker_uri_host)
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361 http_conn.putrequest('PUT', http_request.path)
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362 for k in put_headers:
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363 http_conn.putheader(k, put_headers[k])
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364 http_conn.endheaders()
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365
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366 # Turn off debug on http connection so upload content isn't included
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367 # in debug stream.
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368 http_conn.set_debuglevel(0)
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369 while buf:
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370 http_conn.send(buf)
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371 for alg in self.digesters:
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372 self.digesters[alg].update(buf)
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373 total_bytes_uploaded += len(buf)
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374 if cb:
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375 i += 1
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
376 if i == cb_count or cb_count == -1:
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377 cb(total_bytes_uploaded, file_length)
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378 i = 0
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379 buf = fp.read(self.BUFFER_SIZE)
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380 http_conn.set_debuglevel(conn.debug)
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diff changeset
381 if cb:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
382 cb(total_bytes_uploaded, file_length)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
383 if total_bytes_uploaded != file_length:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
384 # Abort (and delete the tracker file) so if the user retries
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
385 # they'll start a new resumable upload rather than potentially
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
386 # attempting to pick back up later where we left off.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
387 raise ResumableUploadException(
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
388 'File changed during upload: EOF at %d bytes of %d byte file.' %
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
389 (total_bytes_uploaded, file_length),
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
390 ResumableTransferDisposition.ABORT)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
391 resp = http_conn.getresponse()
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
392 # Restore http connection debug level.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
393 http_conn.set_debuglevel(conn.debug)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
394
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
395 if resp.status == 200:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
396 # Success.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
397 return (resp.getheader('etag'),
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
398 resp.getheader('x-goog-generation'),
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
399 resp.getheader('x-goog-metageneration'))
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
400 # Retry timeout (408) and status 500 and 503 errors after a delay.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
401 elif resp.status in [408, 500, 503]:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
402 disposition = ResumableTransferDisposition.WAIT_BEFORE_RETRY
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
403 else:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
404 # Catch all for any other error codes.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
405 disposition = ResumableTransferDisposition.ABORT
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
406 raise ResumableUploadException('Got response code %d while attempting '
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
407 'upload (%s)' %
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
408 (resp.status, resp.reason), disposition)
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guerler
parents:
diff changeset
409
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
410 def _attempt_resumable_upload(self, key, fp, file_length, headers, cb,
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
411 num_cb):
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
412 """
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
413 Attempts a resumable upload.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
414
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
415 Returns (etag, generation, metageneration) from server upon success.
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guerler
parents:
diff changeset
416
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
417 Raises ResumableUploadException if any problems occur.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
418 """
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guerler
parents:
diff changeset
419 (server_start, server_end) = self.SERVER_HAS_NOTHING
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parents:
diff changeset
420 conn = key.bucket.connection
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
421 if self.tracker_uri:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
422 # Try to resume existing resumable upload.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
423 try:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
424 (server_start, server_end) = (
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
425 self._query_server_pos(conn, file_length))
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
426 self.server_has_bytes = server_start
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
427
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
428 if server_end:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
429 # If the server already has some of the content, we need to
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
430 # update the digesters with the bytes that have already been
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
431 # uploaded to ensure we get a complete hash in the end.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
432 print('Catching up hash digest(s) for resumed upload')
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parents:
diff changeset
433 fp.seek(0)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
434 # Read local file's bytes through position server has. For
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
435 # example, if server has (0, 3) we want to read 3-0+1=4 bytes.
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parents:
diff changeset
436 bytes_to_go = server_end + 1
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
437 while bytes_to_go:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
438 chunk = fp.read(min(key.BufferSize, bytes_to_go))
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
439 if not chunk:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
440 raise ResumableUploadException(
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
441 'Hit end of file during resumable upload hash '
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
442 'catchup. This should not happen under\n'
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
443 'normal circumstances, as it indicates the '
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
444 'server has more bytes of this transfer\nthan'
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
445 ' the current file size. Restarting upload.',
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
446 ResumableTransferDisposition.START_OVER)
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parents:
diff changeset
447 for alg in self.digesters:
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parents:
diff changeset
448 self.digesters[alg].update(chunk)
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diff changeset
449 bytes_to_go -= len(chunk)
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diff changeset
450
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
451 if conn.debug >= 1:
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parents:
diff changeset
452 print('Resuming transfer.')
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
453 except ResumableUploadException as e:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
454 if conn.debug >= 1:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
455 print('Unable to resume transfer (%s).' % e.message)
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parents:
diff changeset
456 self._start_new_resumable_upload(key, headers)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
457 else:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
458 self._start_new_resumable_upload(key, headers)
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diff changeset
459
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
460 # upload_start_point allows the code that instantiated the
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
461 # ResumableUploadHandler to find out the point from which it started
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
462 # uploading (e.g., so it can correctly compute throughput).
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
463 if self.upload_start_point is None:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
464 self.upload_start_point = server_end
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
465
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
466 total_bytes_uploaded = server_end + 1
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
467 # Corner case: Don't attempt to seek if we've already uploaded the
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
468 # entire file, because if the file is a stream (e.g., the KeyFile
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
469 # wrapper around input key when copying between providers), attempting
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
470 # to seek to the end of file would result in an InvalidRange error.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
471 if file_length < total_bytes_uploaded:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
472 fp.seek(total_bytes_uploaded)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
473 conn = key.bucket.connection
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parents:
diff changeset
474
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
475 # Get a new HTTP connection (vs conn.get_http_connection(), which reuses
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
476 # pool connections) because httplib requires a new HTTP connection per
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
477 # transaction. (Without this, calling http_conn.getresponse() would get
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
478 # "ResponseNotReady".)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
479 http_conn = conn.new_http_connection(self.tracker_uri_host, conn.port,
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
480 conn.is_secure)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
481 http_conn.set_debuglevel(conn.debug)
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parents:
diff changeset
482
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
483 # Make sure to close http_conn at end so if a local file read
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
484 # failure occurs partway through server will terminate current upload
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
485 # and can report that progress on next attempt.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
486 try:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
487 return self._upload_file_bytes(conn, http_conn, fp, file_length,
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
488 total_bytes_uploaded, cb, num_cb,
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
489 headers)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
490 except (ResumableUploadException, socket.error):
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parents:
diff changeset
491 resp = self._query_server_state(conn, file_length)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
492 if resp.status == 400:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
493 raise ResumableUploadException('Got 400 response from server '
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
494 'state query after failed resumable upload attempt. This '
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
495 'can happen for various reasons, including specifying an '
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
496 'invalid request (e.g., an invalid canned ACL) or if the '
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
497 'file size changed between upload attempts',
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
498 ResumableTransferDisposition.ABORT)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
499 else:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
500 raise
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
501 finally:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
502 http_conn.close()
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
503
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
504 def _check_final_md5(self, key, etag):
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
505 """
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
506 Checks that etag from server agrees with md5 computed before upload.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
507 This is important, since the upload could have spanned a number of
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
508 hours and multiple processes (e.g., gsutil runs), and the user could
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
509 change some of the file and not realize they have inconsistent data.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
510 """
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
511 if key.bucket.connection.debug >= 1:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
512 print('Checking md5 against etag.')
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
513 if key.md5 != etag.strip('"\''):
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
514 # Call key.open_read() before attempting to delete the
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
515 # (incorrect-content) key, so we perform that request on a
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
516 # different HTTP connection. This is neededb because httplib
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
517 # will return a "Response not ready" error if you try to perform
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
518 # a second transaction on the connection.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
519 key.open_read()
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
520 key.close()
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
521 key.delete()
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
522 raise ResumableUploadException(
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
523 'File changed during upload: md5 signature doesn\'t match etag '
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
524 '(incorrect uploaded object deleted)',
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
525 ResumableTransferDisposition.ABORT)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
526
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
527 def handle_resumable_upload_exception(self, e, debug):
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
528 if (e.disposition == ResumableTransferDisposition.ABORT_CUR_PROCESS):
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
529 if debug >= 1:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
530 print('Caught non-retryable ResumableUploadException (%s); '
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
531 'aborting but retaining tracker file' % e.message)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
532 raise
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
533 elif (e.disposition == ResumableTransferDisposition.ABORT):
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
534 if debug >= 1:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
535 print('Caught non-retryable ResumableUploadException (%s); '
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
536 'aborting and removing tracker file' % e.message)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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diff changeset
537 self._remove_tracker_file()
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
538 raise
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
539 else:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
540 if debug >= 1:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
541 print('Caught ResumableUploadException (%s) - will retry' %
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
542 e.message)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
543
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
544 def track_progress_less_iterations(self, server_had_bytes_before_attempt,
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
545 roll_back_md5=True, debug=0):
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
546 # At this point we had a re-tryable failure; see if made progress.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
547 if self.server_has_bytes > server_had_bytes_before_attempt:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
548 self.progress_less_iterations = 0 # If progress, reset counter.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
549 else:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
550 self.progress_less_iterations += 1
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
551 if roll_back_md5:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
552 # Rollback any potential hash updates, as we did not
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
553 # make any progress in this iteration.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
554 self.digesters = self.digesters_before_attempt
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diff changeset
555
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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556 if self.progress_less_iterations > self.num_retries:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
557 # Don't retry any longer in the current process.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
558 raise ResumableUploadException(
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
559 'Too many resumable upload attempts failed without '
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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diff changeset
560 'progress. You might try this upload again later',
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
561 ResumableTransferDisposition.ABORT_CUR_PROCESS)
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diff changeset
562
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
563 # Use binary exponential backoff to desynchronize client requests.
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564 sleep_time_secs = random.random() * (2**self.progress_less_iterations)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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565 if debug >= 1:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
566 print('Got retryable failure (%d progress-less in a row).\n'
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diff changeset
567 'Sleeping %3.1f seconds before re-trying' %
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diff changeset
568 (self.progress_less_iterations, sleep_time_secs))
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
569 time.sleep(sleep_time_secs)
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diff changeset
570
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571 def send_file(self, key, fp, headers, cb=None, num_cb=10, hash_algs=None):
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572 """
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
573 Upload a file to a key into a bucket on GS, using GS resumable upload
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
574 protocol.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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575
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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576 :type key: :class:`boto.s3.key.Key` or subclass
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diff changeset
577 :param key: The Key object to which data is to be uploaded
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578
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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579 :type fp: file-like object
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diff changeset
580 :param fp: The file pointer to upload
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diff changeset
581
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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582 :type headers: dict
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
583 :param headers: The headers to pass along with the PUT request
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
584
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
585 :type cb: function
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
586 :param cb: a callback function that will be called to report progress on
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
587 the upload. The callback should accept two integer parameters, the
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
588 first representing the number of bytes that have been successfully
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
589 transmitted to GS, and the second representing the total number of
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
590 bytes that need to be transmitted.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
591
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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592 :type num_cb: int
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
593 :param num_cb: (optional) If a callback is specified with the cb
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
594 parameter, this parameter determines the granularity of the callback
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
595 by defining the maximum number of times the callback will be called
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
596 during the file transfer. Providing a negative integer will cause
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
597 your callback to be called with each buffer read.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
598
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
599 :type hash_algs: dictionary
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
600 :param hash_algs: (optional) Dictionary mapping hash algorithm
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
601 descriptions to corresponding state-ful hashing objects that
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
602 implement update(), digest(), and copy() (e.g. hashlib.md5()).
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
603 Defaults to {'md5': md5()}.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
604
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
605 Raises ResumableUploadException if a problem occurs during the transfer.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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606 """
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
607
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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608 if not headers:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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609 headers = {}
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
610 # If Content-Type header is present and set to None, remove it.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
611 # This is gsutil's way of asking boto to refrain from auto-generating
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
612 # that header.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
613 CT = 'Content-Type'
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
614 if CT in headers and headers[CT] is None:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
615 del headers[CT]
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
616
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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617 headers['User-Agent'] = UserAgent
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
618
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
619 # Determine file size different ways for case where fp is actually a
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
620 # wrapper around a Key vs an actual file.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
621 if isinstance(fp, KeyFile):
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
622 file_length = fp.getkey().size
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
623 else:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
624 fp.seek(0, os.SEEK_END)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
625 file_length = fp.tell()
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
626 fp.seek(0)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
627 debug = key.bucket.connection.debug
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
628
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
629 # Compute the MD5 checksum on the fly.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
630 if hash_algs is None:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
631 hash_algs = {'md5': md5}
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
632 self.digesters = dict(
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
633 (alg, hash_algs[alg]()) for alg in hash_algs or {})
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
634
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
635 # Use num-retries from constructor if one was provided; else check
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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636 # for a value specified in the boto config file; else default to 5.
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637 if self.num_retries is None:
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638 self.num_retries = config.getint('Boto', 'num_retries', 6)
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639 self.progress_less_iterations = 0
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640
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641 while True: # Retry as long as we're making progress.
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642 server_had_bytes_before_attempt = self.server_has_bytes
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643 self.digesters_before_attempt = dict(
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644 (alg, self.digesters[alg].copy())
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645 for alg in self.digesters)
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646 try:
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647 # Save generation and metageneration in class state so caller
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648 # can find these values, for use in preconditions of future
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649 # operations on the uploaded object.
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650 (etag, self.generation, self.metageneration) = (
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651 self._attempt_resumable_upload(key, fp, file_length,
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652 headers, cb, num_cb))
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653
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654 # Get the final digests for the uploaded content.
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655 for alg in self.digesters:
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656 key.local_hashes[alg] = self.digesters[alg].digest()
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657
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658 # Upload succceded, so remove the tracker file (if have one).
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659 self._remove_tracker_file()
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660 self._check_final_md5(key, etag)
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661 key.generation = self.generation
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662 if debug >= 1:
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663 print('Resumable upload complete.')
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664 return
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665 except self.RETRYABLE_EXCEPTIONS as e:
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666 if debug >= 1:
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667 print('Caught exception (%s)' % e.__repr__())
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668 if isinstance(e, IOError) and e.errno == errno.EPIPE:
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669 # Broken pipe error causes httplib to immediately
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670 # close the socket (http://bugs.python.org/issue5542),
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671 # so we need to close the connection before we resume
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672 # the upload (which will cause a new connection to be
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673 # opened the next time an HTTP request is sent).
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674 key.bucket.connection.connection.close()
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675 except ResumableUploadException as e:
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676 self.handle_resumable_upload_exception(e, debug)
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677
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678 self.track_progress_less_iterations(server_had_bytes_before_attempt,
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679 True, debug)