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annotate planemo/lib/python3.7/site-packages/boto/cloudsearch/document.py @ 0:d30785e31577 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:18:57 -0400
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1 # Copyright (c) 2012 Mitch Garnaat http://garnaat.org/
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2 # Copyright (c) 2012 Amazon.com, Inc. or its affiliates.
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3 # All Rights Reserved
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4 #
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5 # Permission is hereby granted, free of charge, to any person obtaining a
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6 # copy of this software and associated documentation files (the
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7 # "Software"), to deal in the Software without restriction, including
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8 # without limitation the rights to use, copy, modify, merge, publish, dis-
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9 # tribute, sublicense, and/or sell copies of the Software, and to permit
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10 # persons to whom the Software is furnished to do so, subject to the fol-
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11 # lowing conditions:
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12 #
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13 # The above copyright notice and this permission notice shall be included
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14 # in all copies or substantial portions of the Software.
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15 #
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16 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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17 # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
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18 # ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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19 # SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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20 # WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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22 # IN THE SOFTWARE.
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23 #
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24
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25 import boto.exception
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26 from boto.compat import json
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27 import requests
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28 import boto
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29
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30 class SearchServiceException(Exception):
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31 pass
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32
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33
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34 class CommitMismatchError(Exception):
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35 pass
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36
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37 class EncodingError(Exception):
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38 """
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39 Content sent for Cloud Search indexing was incorrectly encoded.
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40
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41 This usually happens when a document is marked as unicode but non-unicode
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42 characters are present.
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43 """
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44 pass
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45
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46 class ContentTooLongError(Exception):
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47 """
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48 Content sent for Cloud Search indexing was too long
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49
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50 This will usually happen when documents queued for indexing add up to more
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51 than the limit allowed per upload batch (5MB)
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52
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53 """
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54 pass
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55
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56 class DocumentServiceConnection(object):
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57 """
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58 A CloudSearch document service.
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59
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60 The DocumentServiceConection is used to add, remove and update documents in
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61 CloudSearch. Commands are uploaded to CloudSearch in SDF (Search Document Format).
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62
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63 To generate an appropriate SDF, use :func:`add` to add or update documents,
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64 as well as :func:`delete` to remove documents.
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65
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66 Once the set of documents is ready to be index, use :func:`commit` to send the
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67 commands to CloudSearch.
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68
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69 If there are a lot of documents to index, it may be preferable to split the
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70 generation of SDF data and the actual uploading into CloudSearch. Retrieve
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71 the current SDF with :func:`get_sdf`. If this file is the uploaded into S3,
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72 it can be retrieved back afterwards for upload into CloudSearch using
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73 :func:`add_sdf_from_s3`.
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74
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75 The SDF is not cleared after a :func:`commit`. If you wish to continue
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76 using the DocumentServiceConnection for another batch upload of commands,
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77 you will need to :func:`clear_sdf` first to stop the previous batch of
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78 commands from being uploaded again.
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79
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80 """
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81
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82 def __init__(self, domain=None, endpoint=None):
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83 self.domain = domain
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84 self.endpoint = endpoint
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85 if not self.endpoint:
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86 self.endpoint = domain.doc_service_endpoint
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87 self.documents_batch = []
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88 self._sdf = None
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89
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90 def add(self, _id, version, fields, lang='en'):
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91 """
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92 Add a document to be processed by the DocumentService
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93
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94 The document will not actually be added until :func:`commit` is called
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95
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96 :type _id: string
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97 :param _id: A unique ID used to refer to this document.
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98
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99 :type version: int
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100 :param version: Version of the document being indexed. If a file is
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101 being reindexed, the version should be higher than the existing one
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102 in CloudSearch.
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103
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104 :type fields: dict
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105 :param fields: A dictionary of key-value pairs to be uploaded .
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106
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107 :type lang: string
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108 :param lang: The language code the data is in. Only 'en' is currently
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109 supported
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110 """
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111
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112 d = {'type': 'add', 'id': _id, 'version': version, 'lang': lang,
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113 'fields': fields}
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114 self.documents_batch.append(d)
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115
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116 def delete(self, _id, version):
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117 """
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118 Schedule a document to be removed from the CloudSearch service
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119
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120 The document will not actually be scheduled for removal until :func:`commit` is called
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121
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122 :type _id: string
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123 :param _id: The unique ID of this document.
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124
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125 :type version: int
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126 :param version: Version of the document to remove. The delete will only
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127 occur if this version number is higher than the version currently
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128 in the index.
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129 """
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130
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131 d = {'type': 'delete', 'id': _id, 'version': version}
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132 self.documents_batch.append(d)
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133
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134 def get_sdf(self):
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135 """
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136 Generate the working set of documents in Search Data Format (SDF)
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137
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138 :rtype: string
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139 :returns: JSON-formatted string of the documents in SDF
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140 """
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141
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142 return self._sdf if self._sdf else json.dumps(self.documents_batch)
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143
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144 def clear_sdf(self):
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145 """
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146 Clear the working documents from this DocumentServiceConnection
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147
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148 This should be used after :func:`commit` if the connection will be reused
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149 for another set of documents.
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150 """
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151
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152 self._sdf = None
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153 self.documents_batch = []
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154
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155 def add_sdf_from_s3(self, key_obj):
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156 """
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157 Load an SDF from S3
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158
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159 Using this method will result in documents added through
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160 :func:`add` and :func:`delete` being ignored.
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161
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162 :type key_obj: :class:`boto.s3.key.Key`
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163 :param key_obj: An S3 key which contains an SDF
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164 """
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165 #@todo:: (lucas) would be nice if this could just take an s3://uri..."
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166
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167 self._sdf = key_obj.get_contents_as_string()
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168
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169 def commit(self):
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170 """
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171 Actually send an SDF to CloudSearch for processing
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172
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173 If an SDF file has been explicitly loaded it will be used. Otherwise,
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174 documents added through :func:`add` and :func:`delete` will be used.
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175
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176 :rtype: :class:`CommitResponse`
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177 :returns: A summary of documents added and deleted
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178 """
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179
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180 sdf = self.get_sdf()
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181
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182 if ': null' in sdf:
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183 boto.log.error('null value in sdf detected. This will probably raise '
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184 '500 error.')
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185 index = sdf.index(': null')
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186 boto.log.error(sdf[index - 100:index + 100])
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187
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188 url = "http://%s/2011-02-01/documents/batch" % (self.endpoint)
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189
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190 # Keep-alive is automatic in a post-1.0 requests world.
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191 session = requests.Session()
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192 adapter = requests.adapters.HTTPAdapter(
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193 pool_connections=20,
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194 pool_maxsize=50,
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195 max_retries=5
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196 )
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197 session.mount('http://', adapter)
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198 session.mount('https://', adapter)
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199 r = session.post(url, data=sdf, headers={'Content-Type': 'application/json'})
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200
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201 return CommitResponse(r, self, sdf)
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202
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203
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204 class CommitResponse(object):
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205 """Wrapper for response to Cloudsearch document batch commit.
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206
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207 :type response: :class:`requests.models.Response`
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208 :param response: Response from Cloudsearch /documents/batch API
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209
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210 :type doc_service: :class:`boto.cloudsearch.document.DocumentServiceConnection`
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211 :param doc_service: Object containing the documents posted and methods to
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212 retry
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213
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214 :raises: :class:`boto.exception.BotoServerError`
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215 :raises: :class:`boto.cloudsearch.document.SearchServiceException`
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216 :raises: :class:`boto.cloudsearch.document.EncodingError`
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217 :raises: :class:`boto.cloudsearch.document.ContentTooLongError`
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218 """
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219 def __init__(self, response, doc_service, sdf):
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220 self.response = response
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221 self.doc_service = doc_service
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222 self.sdf = sdf
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223
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224 _body = response.content.decode('utf-8')
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225
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226 try:
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227 self.content = json.loads(_body)
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228 except:
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229 boto.log.error('Error indexing documents.\nResponse Content:\n{0}\n\n'
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230 'SDF:\n{1}'.format(_body, self.sdf))
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231 raise boto.exception.BotoServerError(self.response.status_code, '',
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232 body=_body)
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233
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234 self.status = self.content['status']
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235 if self.status == 'error':
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236 self.errors = [e.get('message') for e in self.content.get('errors',
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237 [])]
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238 for e in self.errors:
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239 if "Illegal Unicode character" in e:
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240 raise EncodingError("Illegal Unicode character in document")
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241 elif e == "The Content-Length is too long":
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242 raise ContentTooLongError("Content was too long")
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243 if 'adds' not in self.content or 'deletes' not in self.content:
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244 raise SearchServiceException("Error indexing documents"
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245 " => %s" % self.content.get('message', ''))
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246 else:
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247 self.errors = []
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248
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249 self.adds = self.content['adds']
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250 self.deletes = self.content['deletes']
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251 self._check_num_ops('add', self.adds)
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252 self._check_num_ops('delete', self.deletes)
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253
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254 def _check_num_ops(self, type_, response_num):
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255 """Raise exception if number of ops in response doesn't match commit
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256
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257 :type type_: str
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258 :param type_: Type of commit operation: 'add' or 'delete'
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259
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260 :type response_num: int
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261 :param response_num: Number of adds or deletes in the response.
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262
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263 :raises: :class:`boto.cloudsearch.document.CommitMismatchError`
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264 """
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265 commit_num = len([d for d in self.doc_service.documents_batch
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266 if d['type'] == type_])
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267
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268 if response_num != commit_num:
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269 raise CommitMismatchError(
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270 'Incorrect number of {0}s returned. Commit: {1} Response: {2}'\
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271 .format(type_, commit_num, response_num))