1 | from . import InvalidJobStateException, MissingDataException |
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2 | from .player import Player |
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3 | from gutenbach.ipp import JobStates as States |
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4 | import os |
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5 | import gutenbach.ipp as ipp |
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6 | import logging |
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7 | |
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8 | # initialize logger |
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9 | logger = logging.getLogger(__name__) |
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10 | |
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11 | class Job(object): |
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12 | |
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13 | # for IPP |
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14 | attributes = [ |
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15 | "job-id", |
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16 | "job-name", |
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17 | "job-originating-user-name", |
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18 | "job-k-octets", |
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19 | "job-state", |
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20 | "job-printer-uri" |
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21 | ] |
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22 | |
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23 | def __init__(self, job_id=-1, printer=None, creator=None, name=None, size=None): |
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24 | """Create an empty Gutenbach job. |
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25 | |
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26 | """ |
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27 | |
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28 | self.printer = printer |
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29 | self.player = None |
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30 | |
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31 | self.id = job_id |
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32 | self.creator = creator |
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33 | self.name = name |
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34 | self.size = size |
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35 | self.state = States.HELD |
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36 | self.priority = 1 |
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37 | |
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38 | self.document_name = None |
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39 | self.document_format = None |
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40 | self.document_natural_language = None |
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41 | self.compression = None |
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42 | |
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43 | def __repr__(self): |
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44 | return str(self) |
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45 | |
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46 | def __str__(self): |
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47 | return "<Job %d '%s'>" % (self.id, self.name) |
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48 | |
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49 | def __cmp__(self, other): |
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50 | return cmp(self.priority, other.priority) |
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51 | |
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52 | ###################################################################### |
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53 | ### Properties ### |
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54 | ###################################################################### |
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55 | |
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56 | @property |
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57 | def id(self): |
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58 | """Unique job identifier. Should be a positive integer, |
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59 | except when unassigned, when it defaults to -1. |
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60 | |
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61 | """ |
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62 | return self._id |
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63 | @id.setter |
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64 | def id(self, val): |
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65 | try: |
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66 | self._id = int(val) |
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67 | except TypeError: |
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68 | self._id = -1 |
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69 | |
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70 | @property |
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71 | def uri(self): |
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72 | return self.uris[0] |
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73 | |
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74 | @property |
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75 | def uris(self): |
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76 | return ["ipp://localhost/jobs/%d" % self.id, |
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77 | "ipp://localhost:8000/jobs/%d" % self.id] |
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78 | |
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79 | @property |
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80 | def creator(self): |
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81 | """The user who created the job; analogous to the IPP |
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82 | requesting-user-name. |
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83 | |
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84 | """ |
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85 | return self._creator |
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86 | @creator.setter |
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87 | def creator(self, val): |
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88 | if val is None: |
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89 | self._creator = "" |
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90 | else: |
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91 | self._creator = str(val) |
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92 | |
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93 | @property |
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94 | def name(self): |
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95 | """The job's name. |
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96 | |
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97 | """ |
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98 | return self._name |
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99 | @name.setter |
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100 | def name(self, val): |
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101 | if val is None: |
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102 | self._name = "" |
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103 | else: |
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104 | self._name = str(val) |
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105 | |
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106 | @property |
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107 | def size(self): |
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108 | """The size of the job in bytes. |
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109 | |
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110 | """ |
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111 | return self._size |
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112 | @size.setter |
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113 | def size(self, val): |
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114 | try: |
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115 | self._size = int(val) |
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116 | except TypeError: |
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117 | self._size = 0 |
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118 | |
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119 | @property |
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120 | def is_playing(self): |
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121 | return self.state == States.PROCESSING |
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122 | |
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123 | @property |
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124 | def is_ready(self): |
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125 | return self.state == States.PENDING |
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126 | |
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127 | @property |
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128 | def is_finished(self): |
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129 | return self.state != States.PENDING and \ |
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130 | self.state != States.PROCESSING and \ |
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131 | self.state != States.HELD |
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132 | |
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133 | ###################################################################### |
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134 | ### Methods ### |
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135 | ###################################################################### |
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136 | |
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137 | def play(self): |
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138 | """Non-blocking play function. |
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139 | |
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140 | """ |
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141 | |
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142 | # make sure the job is waiting to be played and that it's |
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143 | # valid |
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144 | if self.state != States.PENDING: |
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145 | raise InvalidJobStateException(self.state) |
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146 | |
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147 | # and set the state to processing if we're good to go |
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148 | logger.info("playing job %s" % str(self)) |
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149 | self.state = States.PROCESSING |
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150 | self.player.callback = self._completed |
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151 | self.player.start() |
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152 | |
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153 | def pause(self): |
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154 | if self.is_playing: |
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155 | self.player.mplayer_pause() |
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156 | self.state = States.STOPPED |
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157 | |
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158 | def cancel(self): |
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159 | if self.is_playing: |
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160 | self.player.callback = self._canceled |
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161 | self.player.mplayer_stop() |
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162 | self.state = States.CANCELLED |
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163 | |
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164 | def abort(self): |
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165 | if self.is_playing: |
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166 | self.player.callback = self._aborted |
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167 | self.player.mplayer_stop() |
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168 | self.state = states.ABORTED |
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169 | |
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170 | def _completed(self): |
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171 | logger.info("completed job %s" % str(self)) |
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172 | self.state = States.COMPLETE |
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173 | self.player = None |
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174 | |
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175 | def _canceled(self): |
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176 | logger.info("canceled job %s" % str(self)) |
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177 | self.state = States.CANCELLED |
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178 | self.player = None |
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179 | |
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180 | def _aborted(self): |
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181 | logger.info("aborted job %s" % str(self)) |
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182 | self.state = States.ABORTED |
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183 | self.player = None |
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184 | |
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185 | ###################################################################### |
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186 | ### IPP Attributes ### |
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187 | ###################################################################### |
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188 | |
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189 | @property |
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190 | def job_id(self): |
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191 | return ipp.JobId(self.id) |
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192 | |
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193 | @property |
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194 | def job_name(self): |
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195 | return ipp.JobName(self.name) |
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196 | |
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197 | @property |
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198 | def job_originating_user_name(self): |
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199 | return ipp.JobOriginatingUserName(self.creator) |
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200 | |
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201 | @property |
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202 | def job_k_octets(self): |
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203 | return ipp.JobKOctets(self.size) |
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204 | |
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205 | @property |
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206 | def job_state(self): |
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207 | return ipp.JobState(self.state) |
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208 | |
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209 | @property |
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210 | def job_printer_uri(self): |
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211 | return ipp.JobPrinterUri(self.printer.uri) |
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212 | |
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213 | |
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214 | ###################################################################### |
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215 | ### IPP Operations ### |
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216 | ###################################################################### |
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217 | |
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218 | def cancel_job(self): |
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219 | pass |
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220 | |
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221 | def send_document(self, document, document_name=None, |
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222 | document_format=None, document_natural_language=None, |
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223 | requesting_user_name=None, compression=None, |
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224 | last_document=None): |
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225 | |
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226 | if self.state != States.HELD: |
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227 | raise InvalidJobStateException(self.state) |
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228 | |
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229 | self.player = Player(document) |
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230 | |
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231 | if self.size == 0: |
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232 | self.size = os.path.getsize(document.name) |
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233 | |
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234 | self.document_name = str(document_name) |
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235 | self.document_format = str(document_format) |
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236 | self.document_natural_language = str(document_natural_language) |
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237 | self.creator = str(requesting_user_name) |
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238 | self.compression = str(compression) |
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239 | self.state = States.PENDING |
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240 | |
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241 | logger.debug("document for job %d is '%s'" % (self.id, self.document_name)) |
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242 | |
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243 | def send_uri(self): |
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244 | pass |
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245 | |
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246 | def get_job_attributes(self, requested_attributes=None): |
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247 | if requested_attributes is None: |
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248 | requested = self.attributes |
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249 | else: |
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250 | requested = [a for a in self.attributes if a in requested_attributes] |
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251 | |
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252 | _attributes = [attr.replace("-", "_") for attr in requested] |
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253 | attributes = [getattr(self, attr) for attr in _attributes] |
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254 | return attributes |
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255 | |
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256 | def set_job_attributes(self): |
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257 | pass |
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258 | |
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259 | def restart_job(self): |
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260 | pass |
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261 | |
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262 | def promote_job(self): |
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263 | pass |
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