Mercurial > repos > bcclaywell > argo_navis

annotate venv/lib/python2.7/site-packages/boto/sqs/queue.py @ 0:d67268158946 draft

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planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
author bcclaywell
date Mon, 12 Oct 2015 17:43:33 -0400
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1 # Copyright (c) 2006-2009 Mitch Garnaat http://garnaat.org/
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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
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22 """
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23 Represents an SQS Queue
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24 """
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25 from boto.compat import urllib
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26 from boto.sqs.message import Message
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27
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28
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29 class Queue(object):
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30
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31 def __init__(self, connection=None, url=None, message_class=Message):
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32 self.connection = connection
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33 self.url = url
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34 self.message_class = message_class
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35 self.visibility_timeout = None
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36
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37 def __repr__(self):
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38 return 'Queue(%s)' % self.url
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39
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40 def _id(self):
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41 if self.url:
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42 val = urllib.parse.urlparse(self.url)[2]
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43 else:
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44 val = self.url
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45 return val
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46 id = property(_id)
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47
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48 def _name(self):
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49 if self.url:
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50 val = urllib.parse.urlparse(self.url)[2].split('/')[2]
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51 else:
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52 val = self.url
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53 return val
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54 name = property(_name)
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55
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56 def _arn(self):
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57 parts = self.id.split('/')
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58 return 'arn:aws:sqs:%s:%s:%s' % (
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59 self.connection.region.name, parts[1], parts[2])
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60 arn = property(_arn)
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61
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62 def startElement(self, name, attrs, connection):
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63 return None
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64
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65 def endElement(self, name, value, connection):
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66 if name == 'QueueUrl':
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67 self.url = value
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68 elif name == 'VisibilityTimeout':
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69 self.visibility_timeout = int(value)
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70 else:
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71 setattr(self, name, value)
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72
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73 def set_message_class(self, message_class):
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74 """
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75 Set the message class that should be used when instantiating
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76 messages read from the queue. By default, the class
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77 :class:`boto.sqs.message.Message` is used but this can be overriden
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78 with any class that behaves like a message.
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79
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80 :type message_class: Message-like class
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81 :param message_class: The new Message class
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82 """
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83 self.message_class = message_class
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84
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85 def get_attributes(self, attributes='All'):
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86 """
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87 Retrieves attributes about this queue object and returns
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88 them in an Attribute instance (subclass of a Dictionary).
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89
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90 :type attributes: string
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91 :param attributes: String containing one of:
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92 ApproximateNumberOfMessages,
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93 ApproximateNumberOfMessagesNotVisible,
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94 VisibilityTimeout,
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95 CreatedTimestamp,
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96 LastModifiedTimestamp,
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97 Policy
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98 ReceiveMessageWaitTimeSeconds
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99 :rtype: Attribute object
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100 :return: An Attribute object which is a mapping type holding the
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101 requested name/value pairs
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102 """
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103 return self.connection.get_queue_attributes(self, attributes)
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104
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105 def set_attribute(self, attribute, value):
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106 """
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107 Set a new value for an attribute of the Queue.
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108
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109 :type attribute: String
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110 :param attribute: The name of the attribute you want to set. The
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111 only valid value at this time is: VisibilityTimeout
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112 :type value: int
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113 :param value: The new value for the attribute.
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114 For VisibilityTimeout the value must be an
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115 integer number of seconds from 0 to 86400.
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116
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117 :rtype: bool
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118 :return: True if successful, otherwise False.
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119 """
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120 return self.connection.set_queue_attribute(self, attribute, value)
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121
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122 def get_timeout(self):
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123 """
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124 Get the visibility timeout for the queue.
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125
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126 :rtype: int
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127 :return: The number of seconds as an integer.
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128 """
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129 a = self.get_attributes('VisibilityTimeout')
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130 return int(a['VisibilityTimeout'])
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131
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132 def set_timeout(self, visibility_timeout):
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133 """
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134 Set the visibility timeout for the queue.
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135
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136 :type visibility_timeout: int
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137 :param visibility_timeout: The desired timeout in seconds
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138 """
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139 retval = self.set_attribute('VisibilityTimeout', visibility_timeout)
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140 if retval:
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141 self.visibility_timeout = visibility_timeout
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142 return retval
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143
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144 def add_permission(self, label, aws_account_id, action_name):
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145 """
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146 Add a permission to a queue.
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147
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148 :type label: str or unicode
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149 :param label: A unique identification of the permission you are setting.
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150 Maximum of 80 characters ``[0-9a-zA-Z_-]``
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151 Example, AliceSendMessage
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152
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153 :type aws_account_id: str or unicode
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154 :param principal_id: The AWS account number of the principal who
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155 will be given permission. The principal must have an AWS account,
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156 but does not need to be signed up for Amazon SQS. For information
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157 about locating the AWS account identification.
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158
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159 :type action_name: str or unicode
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160 :param action_name: The action. Valid choices are:
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161 SendMessage|ReceiveMessage|DeleteMessage|
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162 ChangeMessageVisibility|GetQueueAttributes|*
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163
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164 :rtype: bool
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165 :return: True if successful, False otherwise.
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166
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167 """
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168 return self.connection.add_permission(self, label, aws_account_id,
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169 action_name)
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170
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171 def remove_permission(self, label):
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172 """
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173 Remove a permission from a queue.
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174
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175 :type label: str or unicode
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176 :param label: The unique label associated with the permission
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177 being removed.
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178
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179 :rtype: bool
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180 :return: True if successful, False otherwise.
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181 """
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182 return self.connection.remove_permission(self, label)
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183
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184 def read(self, visibility_timeout=None, wait_time_seconds=None,
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185 message_attributes=None):
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186 """
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187 Read a single message from the queue.
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188
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189 :type visibility_timeout: int
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190 :param visibility_timeout: The timeout for this message in seconds
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191
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192 :type wait_time_seconds: int
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193 :param wait_time_seconds: The duration (in seconds) for which the call
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194 will wait for a message to arrive in the queue before returning.
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195 If a message is available, the call will return sooner than
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196 wait_time_seconds.
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197
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198 :type message_attributes: list
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199 :param message_attributes: The name(s) of additional message
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200 attributes to return. The default is to return no additional
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201 message attributes. Use ``['All']`` or ``['.*']`` to return all.
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202
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203 :rtype: :class:`boto.sqs.message.Message`
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204 :return: A single message or None if queue is empty
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205 """
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206 rs = self.get_messages(1, visibility_timeout,
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207 wait_time_seconds=wait_time_seconds,
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208 message_attributes=message_attributes)
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209 if len(rs) == 1:
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210 return rs[0]
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211 else:
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212 return None
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213
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214 def write(self, message, delay_seconds=None):
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215 """
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216 Add a single message to the queue.
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217
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218 :type message: Message
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219 :param message: The message to be written to the queue
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220
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221 :rtype: :class:`boto.sqs.message.Message`
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222 :return: The :class:`boto.sqs.message.Message` object that was written.
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223 """
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224 new_msg = self.connection.send_message(self,
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225 message.get_body_encoded(), delay_seconds=delay_seconds,
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226 message_attributes=message.message_attributes)
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227 message.id = new_msg.id
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228 message.md5 = new_msg.md5
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229 return message
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230
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231 def write_batch(self, messages):
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232 """
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233 Delivers up to 10 messages in a single request.
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234
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235 :type messages: List of lists.
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236 :param messages: A list of lists or tuples. Each inner
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237 tuple represents a single message to be written
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238 and consists of and ID (string) that must be unique
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239 within the list of messages, the message body itself
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240 which can be a maximum of 64K in length, an
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241 integer which represents the delay time (in seconds)
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242 for the message (0-900) before the message will
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243 be delivered to the queue, and an optional dict of
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244 message attributes like those passed to ``send_message``
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245 in the connection class.
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246 """
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247 return self.connection.send_message_batch(self, messages)
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248
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249 def new_message(self, body='', **kwargs):
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250 """
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251 Create new message of appropriate class.
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252
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253 :type body: message body
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254 :param body: The body of the newly created message (optional).
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255
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256 :rtype: :class:`boto.sqs.message.Message`
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257 :return: A new Message object
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258 """
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259 m = self.message_class(self, body, **kwargs)
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260 m.queue = self
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261 return m
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262
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263 # get a variable number of messages, returns a list of messages
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264 def get_messages(self, num_messages=1, visibility_timeout=None,
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265 attributes=None, wait_time_seconds=None,
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266 message_attributes=None):
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267 """
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268 Get a variable number of messages.
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269
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270 :type num_messages: int
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271 :param num_messages: The maximum number of messages to read from
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272 the queue.
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273
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274 :type visibility_timeout: int
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275 :param visibility_timeout: The VisibilityTimeout for the messages read.
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276
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277 :type attributes: str
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278 :param attributes: The name of additional attribute to return
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279 with response or All if you want all attributes. The
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280 default is to return no additional attributes. Valid
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281 values: All SenderId SentTimestamp ApproximateReceiveCount
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282 ApproximateFirstReceiveTimestamp
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283
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284 :type wait_time_seconds: int
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285 :param wait_time_seconds: The duration (in seconds) for which the call
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286 will wait for a message to arrive in the queue before returning.
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287 If a message is available, the call will return sooner than
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288 wait_time_seconds.
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289
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290 :type message_attributes: list
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291 :param message_attributes: The name(s) of additional message
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292 attributes to return. The default is to return no additional
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293 message attributes. Use ``['All']`` or ``['.*']`` to return all.
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294
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295 :rtype: list
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296 :return: A list of :class:`boto.sqs.message.Message` objects.
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297 """
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298 return self.connection.receive_message(
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299 self, number_messages=num_messages,
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300 visibility_timeout=visibility_timeout, attributes=attributes,
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301 wait_time_seconds=wait_time_seconds,
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302 message_attributes=message_attributes)
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303
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304 def delete_message(self, message):
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305 """
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306 Delete a message from the queue.
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307
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308 :type message: :class:`boto.sqs.message.Message`
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309 :param message: The :class:`boto.sqs.message.Message` object to delete.
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310
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311 :rtype: bool
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312 :return: True if successful, False otherwise
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313 """
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314 return self.connection.delete_message(self, message)
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315
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316 def delete_message_batch(self, messages):
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317 """
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318 Deletes a list of messages in a single request.
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319
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320 :type messages: List of :class:`boto.sqs.message.Message` objects.
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321 :param messages: A list of message objects.
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322 """
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323 return self.connection.delete_message_batch(self, messages)
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324
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325 def change_message_visibility_batch(self, messages):
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326 """
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327 A batch version of change_message_visibility that can act
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328 on up to 10 messages at a time.
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329
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330 :type messages: List of tuples.
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331 :param messages: A list of tuples where each tuple consists
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332 of a :class:`boto.sqs.message.Message` object and an integer
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333 that represents the new visibility timeout for that message.
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334 """
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335 return self.connection.change_message_visibility_batch(self, messages)
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336
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337 def delete(self):
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338 """
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339 Delete the queue.
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340 """
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341 return self.connection.delete_queue(self)
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342
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343 def purge(self):
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344 """
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345 Purge all messages in the queue.
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346 """
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347 return self.connection.purge_queue(self)
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348
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349 def clear(self, page_size=10, vtimeout=10):
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350 """Deprecated utility function to remove all messages from a queue"""
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351 return self.purge()
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352
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353 def count(self, page_size=10, vtimeout=10):
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354 """
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355 Utility function to count the number of messages in a queue.
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356 Note: This function now calls GetQueueAttributes to obtain
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357 an 'approximate' count of the number of messages in a queue.
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358 """
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359 a = self.get_attributes('ApproximateNumberOfMessages')
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360 return int(a['ApproximateNumberOfMessages'])
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361
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362 def count_slow(self, page_size=10, vtimeout=10):
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363 """
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364 Deprecated. This is the old 'count' method that actually counts
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365 the messages by reading them all. This gives an accurate count but
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366 is very slow for queues with non-trivial number of messasges.
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367 Instead, use get_attributes('ApproximateNumberOfMessages') to take
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368 advantage of the new SQS capability. This is retained only for
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369 the unit tests.
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370 """
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371 n = 0
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372 l = self.get_messages(page_size, vtimeout)
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373 while l:
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374 for m in l:
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375 n += 1
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376 l = self.get_messages(page_size, vtimeout)
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377 return n
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378
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379 def dump(self, file_name, page_size=10, vtimeout=10, sep='\n'):
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380 """Utility function to dump the messages in a queue to a file
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381 NOTE: Page size must be < 10 else SQS errors"""
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382 fp = open(file_name, 'wb')
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383 n = 0
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
384 l = self.get_messages(page_size, vtimeout)
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bcclaywell
parents:
diff changeset
385 while l:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
386 for m in l:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
387 fp.write(m.get_body())
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bcclaywell
parents:
diff changeset
388 if sep:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
389 fp.write(sep)
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bcclaywell
parents:
diff changeset
390 n += 1
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
391 l = self.get_messages(page_size, vtimeout)
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bcclaywell
parents:
diff changeset
392 fp.close()
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bcclaywell
parents:
diff changeset
393 return n
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bcclaywell
parents:
diff changeset
394
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
395 def save_to_file(self, fp, sep='\n'):
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
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396 """
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
397 Read all messages from the queue and persist them to file-like object.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
398 Messages are written to the file and the 'sep' string is written
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
399 in between messages. Messages are deleted from the queue after
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
400 being written to the file.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
401 Returns the number of messages saved.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
402 """
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bcclaywell
parents:
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403 n = 0
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bcclaywell
parents:
diff changeset
404 m = self.read()
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
405 while m:
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bcclaywell
parents:
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406 n += 1
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bcclaywell
parents:
diff changeset
407 fp.write(m.get_body())
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bcclaywell
parents:
diff changeset
408 if sep:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
409 fp.write(sep)
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bcclaywell
parents:
diff changeset
410 self.delete_message(m)
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bcclaywell
parents:
diff changeset
411 m = self.read()
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bcclaywell
parents:
diff changeset
412 return n
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
413
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
414 def save_to_filename(self, file_name, sep='\n'):
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
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415 """
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
416 Read all messages from the queue and persist them to local file.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
417 Messages are written to the file and the 'sep' string is written
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
418 in between messages. Messages are deleted from the queue after
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
419 being written to the file.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
420 Returns the number of messages saved.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
421 """
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
422 fp = open(file_name, 'wb')
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
423 n = self.save_to_file(fp, sep)
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bcclaywell
parents:
diff changeset
424 fp.close()
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bcclaywell
parents:
diff changeset
425 return n
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
426
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
427 # for backwards compatibility
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
428 save = save_to_filename
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
429
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
430 def save_to_s3(self, bucket):
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
431 """
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
432 Read all messages from the queue and persist them to S3.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
433 Messages are stored in the S3 bucket using a naming scheme of::
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
434
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
435 <queue_id>/<message_id>
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
436
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
437 Messages are deleted from the queue after being saved to S3.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
438 Returns the number of messages saved.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
439 """
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
440 n = 0
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
441 m = self.read()
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
442 while m:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
443 n += 1
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
444 key = bucket.new_key('%s/%s' % (self.id, m.id))
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
445 key.set_contents_from_string(m.get_body())
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
446 self.delete_message(m)
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
447 m = self.read()
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
448 return n
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
449
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
450 def load_from_s3(self, bucket, prefix=None):
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
451 """
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
452 Load messages previously saved to S3.
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
453 """
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
454 n = 0
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
455 if prefix:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
456 prefix = '%s/' % prefix
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
457 else:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
458 prefix = '%s/' % self.id[1:]
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
459 rs = bucket.list(prefix=prefix)
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
460 for key in rs:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
461 n += 1
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
462 m = self.new_message(key.get_contents_as_string())
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
463 self.write(m)
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
464 return n
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
465
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
466 def load_from_file(self, fp, sep='\n'):
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
467 """Utility function to load messages from a file-like object to a queue"""
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
468 n = 0
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
469 body = ''
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
470 l = fp.readline()
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
471 while l:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
472 if l == sep:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
473 m = Message(self, body)
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
474 self.write(m)
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
475 n += 1
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
476 print('writing message %d' % n)
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
477 body = ''
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
478 else:
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
479 body = body + l
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
480 l = fp.readline()
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
481 return n
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
482
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
483 def load_from_filename(self, file_name, sep='\n'):
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
484 """Utility function to load messages from a local filename to a queue"""
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
485 fp = open(file_name, 'rb')
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
486 n = self.load_from_file(fp, sep)
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
487 fp.close()
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
488 return n
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
489
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
490 # for backward compatibility
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
491 load = load_from_filename
d67268158946 planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
bcclaywell
parents:
diff changeset
492