1 | from .errors import InvalidJobException, InvalidPrinterStateException, InvalidJobStateException |
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2 | from .job import GutenbachJob |
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3 | from gutenbach.ipp import PrinterStates as States |
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4 | import gutenbach.ipp as ipp |
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5 | import logging |
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6 | import time |
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7 | import threading |
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8 | import heapq |
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9 | import traceback |
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10 | import sys |
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11 | import tempfile |
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12 | from . import sync |
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13 | |
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14 | |
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15 | # initialize logger |
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16 | logger = logging.getLogger(__name__) |
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17 | |
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18 | class GutenbachPrinter(threading.Thread): |
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19 | |
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20 | # for IPP |
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21 | printer_attributes = [ |
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22 | "printer-uri-supported", |
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23 | "uri-authentication-supported", |
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24 | "uri-security-supported", |
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25 | "printer-name", |
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26 | "printer-state", |
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27 | "printer-state-reasons", |
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28 | "ipp-versions-supported", |
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29 | "operations-supported", |
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30 | "charset-configured", |
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31 | "charset-supported", |
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32 | "natural-language-configured", |
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33 | "generated-natural-language-supported", |
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34 | "document-format-default", |
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35 | "document-format-supported", |
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36 | "printer-is-accepting-jobs", |
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37 | "queued-job-count", |
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38 | "pdl-override-supported", |
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39 | "printer-up-time", |
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40 | "compression-supported", |
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41 | "multiple-operation-time-out", |
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42 | "multiple-document-jobs-supported", |
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43 | ] |
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44 | |
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45 | job_attributes = [ |
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46 | "job-id", |
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47 | "job-name", |
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48 | "job-originating-user-name", |
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49 | "job-k-octets", |
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50 | "job-state", |
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51 | "job-printer-uri" |
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52 | ] |
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53 | |
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54 | operations = [ |
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55 | "print-job", |
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56 | "validate-job", |
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57 | "get-jobs", |
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58 | "print-uri", |
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59 | "create-job", |
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60 | "pause-printer", |
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61 | "resume-printer", |
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62 | "get-printer-attributes", |
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63 | "set-printer-attributes", |
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64 | "cancel-job", |
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65 | "send-document", |
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66 | "send-uri", |
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67 | "get-job-attributes", |
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68 | "set-job-attributes", |
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69 | "restart-job", |
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70 | "promote-job" |
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71 | ] |
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72 | |
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73 | def __init__(self, name, config, *args, **kwargs): |
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74 | |
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75 | super(GutenbachPrinter, self).__init__(*args, **kwargs) |
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76 | |
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77 | self.name = name |
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78 | self.config = config |
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79 | self.time_created = int(time.time()) |
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80 | |
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81 | self.finished_jobs = [] |
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82 | self.pending_jobs = [] |
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83 | self.current_job = None |
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84 | self.jobs = {} |
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85 | |
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86 | self.lock = threading.RLock() |
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87 | self._running = False |
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88 | self.paused = False |
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89 | |
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90 | # CUPS ignores jobs with id 0, so we have to start at 1 |
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91 | self._next_job_id = 1 |
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92 | |
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93 | @sync |
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94 | def __repr__(self): |
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95 | return str(self) |
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96 | |
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97 | @sync |
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98 | def __str__(self): |
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99 | return "<Printer '%s'>" % self.name |
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100 | |
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101 | def run(self): |
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102 | self._running = True |
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103 | while self._running: |
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104 | try: |
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105 | with self.lock: |
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106 | if self.current_job is None: |
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107 | self.start_job() |
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108 | elif self.current_job.is_done: |
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109 | self.complete_job() |
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110 | except: |
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111 | logger.fatal(traceback.format_exc()) |
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112 | sys.exit(1) |
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113 | time.sleep(0.1) |
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114 | |
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115 | def stop(self): |
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116 | with self.lock: |
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117 | self._running = False |
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118 | if self.ident is not None and self.isAlive(): |
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119 | self.join() |
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120 | |
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121 | ###################################################################### |
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122 | ### Properties ### |
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123 | ###################################################################### |
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124 | |
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125 | @property |
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126 | def name(self): |
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127 | return self._name |
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128 | @name.setter |
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129 | def name(self, val): |
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130 | try: |
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131 | self._name = str(val) |
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132 | except: |
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133 | self._name = "gutenbach-printer" |
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134 | |
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135 | @property |
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136 | def config(self): |
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137 | return self._config |
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138 | @config.setter |
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139 | def config(self, val): |
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140 | try: |
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141 | _config = dict(val).copy() |
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142 | except: |
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143 | raise ValueError, "not a dictionary" |
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144 | if 'ipp-versions' not in _config: |
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145 | raise ValueError, "missing ipp-versions" |
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146 | self._config = _config |
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147 | |
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148 | @property |
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149 | def uris(self): |
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150 | uris = ["ipp://localhost:8000/printers/" + self.name, |
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151 | "ipp://localhost/printers/" + self.name] |
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152 | return uris |
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153 | |
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154 | @property |
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155 | def uri(self): |
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156 | return self.uris[0] |
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157 | |
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158 | @property |
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159 | @sync |
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160 | def state(self): |
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161 | if self.is_running and self.current_job is not None: |
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162 | state = States.PROCESSING |
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163 | elif self.is_running and len(self.pending_jobs) == 0: |
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164 | state = States.IDLE |
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165 | else: |
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166 | state = States.STOPPED |
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167 | return state |
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168 | |
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169 | @property |
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170 | @sync |
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171 | def active_jobs(self): |
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172 | jobs = self.pending_jobs[:] |
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173 | if self.current_job is not None: |
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174 | jobs.insert(0, self.current_job.id) |
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175 | return jobs |
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176 | |
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177 | @property |
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178 | def is_running(self): |
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179 | running = self.ident is not None and self.isAlive() and self._running |
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180 | return running |
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181 | |
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182 | ###################################################################### |
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183 | ### Methods ### |
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184 | ###################################################################### |
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185 | |
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186 | @sync |
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187 | def assert_running(self): |
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188 | if not self.is_running: |
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189 | raise RuntimeError, "%s not started" % str(self) |
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190 | |
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191 | @sync |
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192 | def start_job(self): |
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193 | self.assert_running() |
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194 | if not self.paused and self.current_job is None: |
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195 | try: |
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196 | job_id = heapq.heappop(self.pending_jobs) |
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197 | self.current_job = self.get_job(job_id) |
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198 | self.current_job.play() |
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199 | except IndexError: |
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200 | self.current_job = None |
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201 | except InvalidJobStateException: |
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202 | heapq.heappush(self.pending_jobs, self.current_job.id) |
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203 | self.current_job = None |
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204 | |
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205 | @sync |
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206 | def complete_job(self): |
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207 | self.assert_running() |
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208 | if not self.paused and self.current_job is not None: |
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209 | try: |
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210 | if not self.current_job.is_done: |
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211 | self.current_job.stop() |
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212 | finally: |
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213 | self.finished_jobs.append(self.current_job.id) |
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214 | self.current_job = None |
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215 | |
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216 | @sync |
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217 | def get_job(self, job_id): |
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218 | self.assert_running() |
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219 | if job_id not in self.jobs: |
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220 | raise InvalidJobException(job_id) |
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221 | return self.jobs[job_id] |
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222 | |
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223 | ###################################################################### |
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224 | ### IPP Attributes ### |
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225 | ###################################################################### |
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226 | |
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227 | @property |
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228 | def printer_uri_supported(self): |
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229 | self.assert_running() |
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230 | return ipp.PrinterUriSupported(self.uri) |
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231 | @printer_uri_supported.setter |
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232 | def printer_uri_supported(self, val): |
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233 | self.assert_running() |
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234 | raise ipp.errors.AttributesNotSettable("printer-uri-supported") |
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235 | |
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236 | @property |
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237 | def uri_authentication_supported(self): |
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238 | self.assert_running() |
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239 | return ipp.UriAuthenticationSupported("none") |
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240 | @uri_authentication_supported.setter |
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241 | def uri_authentication_supported(self, val): |
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242 | self.assert_running() |
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243 | raise ipp.errors.AttributesNotSettable("uri-authentication-supported") |
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244 | |
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245 | @property |
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246 | def uri_security_supported(self): |
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247 | self.assert_running() |
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248 | return ipp.UriSecuritySupported("none") |
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249 | @uri_security_supported.setter |
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250 | def uri_security_supported(self, val): |
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251 | self.assert_running() |
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252 | raise ipp.errors.AttributesNotSettable("uri-security-supported") |
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253 | |
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254 | @property |
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255 | def printer_name(self): |
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256 | self.assert_running() |
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257 | return ipp.PrinterName(self.name) |
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258 | @printer_name.setter |
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259 | def printer_name(self, val): |
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260 | self.assert_running() |
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261 | raise ipp.errors.AttributesNotSettable("printer-name") |
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262 | |
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263 | @property |
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264 | def printer_state(self): |
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265 | self.assert_running() |
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266 | return ipp.PrinterState(self.state) |
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267 | @printer_state.setter |
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268 | def printer_state(self, val): |
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269 | self.assert_running() |
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270 | raise ipp.errors.AttributesNotSettable("printer-state") |
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271 | |
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272 | @property |
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273 | def printer_state_reasons(self): |
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274 | self.assert_running() |
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275 | return ipp.PrinterStateReasons("none") |
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276 | @printer_state_reasons.setter |
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277 | def printer_state_reasons(self, val): |
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278 | self.assert_running() |
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279 | raise ipp.errors.AttributesNotSettable("printer-state-reasons") |
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280 | |
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281 | @property |
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282 | def ipp_versions_supported(self): |
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283 | self.assert_running() |
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284 | return ipp.IppVersionsSupported(*self.config['ipp-versions']) |
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285 | @ipp_versions_supported.setter |
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286 | def ipp_versions_supported(self, val): |
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287 | self.assert_running() |
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288 | raise ipp.errors.AttributesNotSettable("ipp-versions-supported") |
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289 | |
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290 | # XXX: We should query ourself for the supported operations |
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291 | @property |
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292 | def operations_supported(self): |
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293 | self.assert_running() |
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294 | return ipp.OperationsSupported(ipp.OperationCodes.GET_JOBS) |
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295 | @operations_supported.setter |
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296 | def operations_supported(self, val): |
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297 | self.assert_running() |
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298 | raise ipp.errors.AttributesNotSettable("operations-supported") |
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299 | |
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300 | @property |
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301 | def charset_configured(self): |
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302 | self.assert_running() |
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303 | return ipp.CharsetConfigured("utf-8") # XXX |
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304 | @charset_configured.setter |
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305 | def charset_configured(self, val): |
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306 | self.assert_running() |
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307 | raise ipp.errors.AttributesNotSettable("charset-configured") |
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308 | |
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309 | @property |
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310 | def charset_supported(self): |
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311 | self.assert_running() |
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312 | return ipp.CharsetSupported("utf-8") # XXX |
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313 | @charset_supported.setter |
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314 | def charset_supported(self, val): |
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315 | self.assert_running() |
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316 | raise ipp.errors.AttributesNotSettable("charset-supported") |
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317 | |
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318 | @property |
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319 | def natural_language_configured(self): |
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320 | self.assert_running() |
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321 | return ipp.NaturalLanguageConfigured("en-us") |
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322 | @natural_language_configured.setter |
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323 | def natural_language_configured(self, val): |
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324 | self.assert_running() |
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325 | raise ipp.errors.AttributesNotSettable("natural-language-configured") |
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326 | |
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327 | @property |
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328 | def generated_natural_language_supported(self): |
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329 | self.assert_running() |
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330 | return ipp.GeneratedNaturalLanguageSupported("en-us") |
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331 | @generated_natural_language_supported.setter |
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332 | def generated_natural_language_supported(self, val): |
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333 | self.assert_running() |
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334 | raise ipp.errors.AttributesNotSettable("generated-natural-language-supported") |
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335 | |
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336 | @property |
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337 | def document_format_default(self): |
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338 | self.assert_running() |
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339 | return ipp.DocumentFormatDefault("application/octet-stream") |
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340 | @document_format_default.setter |
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341 | def document_format_default(self, val): |
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342 | self.assert_running() |
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343 | raise ipp.errors.AttributesNotSettable("document-format-default") |
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344 | |
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345 | @property |
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346 | def document_format_supported(self): |
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347 | self.assert_running() |
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348 | return ipp.DocumentFormatSupported("application/octet-stream", "audio/mp3") |
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349 | @document_format_supported.setter |
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350 | def document_format_supported(self, val): |
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351 | self.assert_running() |
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352 | raise ipp.errors.AttributesNotSettable("document-format-supported") |
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353 | |
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354 | @property |
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355 | def printer_is_accepting_jobs(self): |
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356 | self.assert_running() |
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357 | return ipp.PrinterIsAcceptingJobs(True) |
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358 | @printer_is_accepting_jobs.setter |
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359 | def printer_is_accepting_jobs(self, val): |
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360 | self.assert_running() |
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361 | raise ipp.errors.AttributesNotSettable("printer-is-accepting-jobs") |
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362 | |
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363 | @property |
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364 | def queued_job_count(self): |
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365 | self.assert_running() |
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366 | return ipp.QueuedJobCount(len(self.active_jobs)) |
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367 | @queued_job_count.setter |
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368 | def queued_job_count(self, val): |
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369 | self.assert_running() |
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370 | raise ipp.errors.AttributesNotSettable("queued-job-count") |
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371 | |
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372 | @property |
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373 | def pdl_override_supported(self): |
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374 | self.assert_running() |
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375 | return ipp.PdlOverrideSupported("not-attempted") |
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376 | @pdl_override_supported.setter |
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377 | def pdl_override_supported(self, val): |
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378 | self.assert_running() |
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379 | raise ipp.errors.AttributesNotSettable("pdl-override-supported") |
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380 | |
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381 | @property |
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382 | def printer_up_time(self): |
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383 | self.assert_running() |
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384 | return ipp.PrinterUpTime(int(time.time()) - self.time_created) |
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385 | @printer_up_time.setter |
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386 | def printer_up_time(self, val): |
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387 | self.assert_running() |
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388 | raise ipp.errors.AttributesNotSettable("printer-up-time") |
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389 | |
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390 | @property |
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391 | def compression_supported(self): |
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392 | self.assert_running() |
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393 | return ipp.CompressionSupported("none") |
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394 | @compression_supported.setter |
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395 | def compression_supported(self, val): |
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396 | self.assert_running() |
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397 | raise ipp.errors.AttributesNotSettable("compression-supported") |
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398 | |
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399 | @property |
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400 | def multiple_operation_time_out(self): |
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401 | self.assert_running() |
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402 | return ipp.MultipleOperationTimeOut(240) |
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403 | @multiple_operation_time_out.setter |
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404 | def multiple_operation_time_out(self, val): |
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405 | self.assert_running() |
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406 | raise ipp.errors.AttributesNotSettable("multiple-operation-time-out") |
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407 | |
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408 | @property |
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409 | def multiple_document_jobs_supported(self): |
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410 | self.assert_running() |
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411 | return ipp.MultipleDocumentJobsSupported(False) |
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412 | @multiple_document_jobs_supported.setter |
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413 | def multiple_document_jobs_supported(self, val): |
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414 | self.assert_running() |
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415 | raise ipp.errors.AttributesNotSettable("multiple-document-jobs-supported") |
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416 | |
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417 | ###################################################################### |
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418 | ### Job IPP Attributes ### |
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419 | ###################################################################### |
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420 | |
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421 | def job_id(self, job_id): |
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422 | self.assert_running() |
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423 | job = self.get_job(job_id) |
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424 | return ipp.JobId(job.id) |
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425 | |
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426 | def job_name(self, job_id): |
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427 | self.assert_running() |
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428 | job = self.get_job(job_id) |
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429 | return ipp.JobName(job.name) |
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430 | |
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431 | def job_originating_user_name(self, job_id): |
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432 | self.assert_running() |
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433 | job = self.get_job(job_id) |
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434 | return ipp.JobOriginatingUserName(job.creator) |
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435 | |
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436 | def job_k_octets(self, job_id): |
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437 | self.assert_running() |
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438 | job = self.get_job(job_id) |
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439 | return ipp.JobKOctets(job.size) |
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440 | |
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441 | def job_state(self, job_id): |
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442 | self.assert_running() |
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443 | job = self.get_job(job_id) |
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444 | return ipp.JobState(job.state) |
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445 | |
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446 | def job_printer_uri(self, job_id): |
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447 | self.assert_running() |
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448 | job = self.get_job(job_id) |
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449 | return ipp.JobPrinterUri(self.uri) |
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450 | |
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451 | ###################################################################### |
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452 | ### IPP Operations ### |
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453 | ###################################################################### |
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454 | |
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455 | @sync |
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456 | def print_job(self, document, document_name=None, document_format=None, |
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457 | document_natural_language=None, requesting_user_name=None, |
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458 | compression=None, job_name=None, job_k_octets=None): |
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459 | |
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460 | self.assert_running() |
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461 | |
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462 | # create the job |
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463 | job_id = self.create_job( |
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464 | requesting_user_name=requesting_user_name, |
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465 | job_name=job_name, |
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466 | job_k_octets=job_k_octets) |
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467 | |
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468 | # send the document |
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469 | self.send_document( |
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470 | job_id, |
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471 | document, |
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472 | document_name=document_name, |
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473 | document_format=document_format, |
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474 | document_natural_language=document_natural_language, |
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475 | requesting_user_name=requesting_user_name, |
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476 | compression=compression, |
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477 | last_document=False) |
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478 | |
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479 | return job_id |
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480 | |
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481 | @sync |
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482 | def validate_job(self, document_name=None, document_format=None, |
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483 | document_natural_language=None, requesting_user_name=None, |
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484 | compression=None, job_name=None, job_k_octets=None): |
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485 | |
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486 | self.assert_running() |
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487 | |
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488 | job_id = self._next_job_id |
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489 | job = GutenbachJob( |
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490 | job_id, |
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491 | creator=requesting_user_name, |
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492 | name=job_name) |
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493 | job.spool(tempfile.TemporaryFile()) |
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494 | job.abort() |
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495 | del job |
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496 | |
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497 | @sync |
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498 | def get_jobs(self, requesting_user_name=None, which_jobs=None, |
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499 | requested_attributes=None): |
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500 | |
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501 | self.assert_running() |
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502 | |
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503 | # Filter by the which-jobs attribute |
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504 | if which_jobs is None: |
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505 | which_jobs = "not-completed" |
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506 | |
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507 | if which_jobs == "completed": |
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508 | jobs = [self.jobs[job_id] for job_id in self.finished_jobs] |
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509 | elif which_jobs == "not-completed": |
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510 | jobs = [self.jobs[job_id] for job_id in self.active_jobs] |
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511 | else: |
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512 | raise ipp.errors.ClientErrorAttributes( |
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513 | which_jobs, ipp.WhichJobs(which_jobs)) |
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514 | |
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515 | # Filter by username |
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516 | if requesting_user_name is None: |
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517 | user_jobs = jobs |
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518 | else: |
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519 | user_jobs = [job for job in jobs if job.creator == requesting_user_name] |
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520 | |
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521 | # Get the attributes of each job |
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522 | job_attrs = [self.get_job_attributes( |
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523 | job.id, requested_attributes=requested_attributes) for job in user_jobs] |
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524 | |
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525 | return job_attrs |
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526 | |
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527 | @sync |
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528 | def print_uri(self): |
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529 | self.assert_running() |
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530 | |
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531 | @sync |
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532 | def create_job(self, requesting_user_name=None, job_name=None, |
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533 | job_k_octets=None): |
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534 | |
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535 | self.assert_running() |
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536 | |
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537 | job_id = self._next_job_id |
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538 | self._next_job_id += 1 |
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539 | |
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540 | job = GutenbachJob( |
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541 | job_id, |
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542 | creator=requesting_user_name, |
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543 | name=job_name) |
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544 | |
---|
545 | self.jobs[job_id] = job |
---|
546 | self.pending_jobs.append(job_id) |
---|
547 | |
---|
548 | return job_id |
---|
549 | |
---|
550 | @sync |
---|
551 | def pause_printer(self): |
---|
552 | """Pause the printer. |
---|
553 | |
---|
554 | Does nothing if the printer is already paused. |
---|
555 | """ |
---|
556 | |
---|
557 | self.assert_running() |
---|
558 | if not self.paused: |
---|
559 | if self.current_job is not None and self.current_job.is_playing: |
---|
560 | self.current_job.pause() |
---|
561 | self.paused = True |
---|
562 | logger.info("%s paused", str(self)) |
---|
563 | |
---|
564 | @sync |
---|
565 | def resume_printer(self): |
---|
566 | """Resume the printer. |
---|
567 | |
---|
568 | Does nothing if the printer is not paused. |
---|
569 | """ |
---|
570 | |
---|
571 | self.assert_running() |
---|
572 | if self.paused: |
---|
573 | if self.current_job is not None: |
---|
574 | self.current_job.resume() |
---|
575 | self.paused = False |
---|
576 | logger.info("%s unpaused", str(self)) |
---|
577 | |
---|
578 | @sync |
---|
579 | def get_printer_attributes(self, requested_attributes=None): |
---|
580 | self.assert_running() |
---|
581 | if requested_attributes is None: |
---|
582 | requested = self.printer_attributes |
---|
583 | else: |
---|
584 | requested = [a for a in self.printer_attributes \ |
---|
585 | if a in requested_attributes] |
---|
586 | |
---|
587 | _attributes = [attr.replace("-", "_") for attr in requested] |
---|
588 | attributes = [getattr(self, attr) for attr in _attributes] |
---|
589 | return attributes |
---|
590 | |
---|
591 | @sync |
---|
592 | def set_printer_attributes(self, attributes): |
---|
593 | self.assert_running() |
---|
594 | for attr in attributes: |
---|
595 | try: |
---|
596 | setattr(self, attr, attributes[attr]) |
---|
597 | except AttributeError: |
---|
598 | raise ipp.errors.ClientErrorAttributes |
---|
599 | |
---|
600 | @sync |
---|
601 | def cancel_job(self, job_id, requesting_user_name=None): |
---|
602 | self.assert_running() |
---|
603 | job = self.get_job(job_id) |
---|
604 | try: |
---|
605 | job.cancel() |
---|
606 | except InvalidJobStateException: |
---|
607 | # XXX |
---|
608 | raise |
---|
609 | |
---|
610 | @sync |
---|
611 | def send_document(self, job_id, document, document_name=None, |
---|
612 | document_format=None, document_natural_language=None, |
---|
613 | requesting_user_name=None, compression=None, |
---|
614 | last_document=None): |
---|
615 | |
---|
616 | self.assert_running() |
---|
617 | job = self.get_job(job_id) |
---|
618 | job.spool(document) |
---|
619 | |
---|
620 | @sync |
---|
621 | def send_uri(self, job_id, document_uri, document_name=None, |
---|
622 | document_format=None, document_natural_language=None, |
---|
623 | requesting_user_name=None, compression=None, |
---|
624 | last_document=None): |
---|
625 | |
---|
626 | self.assert_running() |
---|
627 | job = self.get_job(job_id) |
---|
628 | # XXX: need to validate URI |
---|
629 | # XXX: need to deal with the URI stream? |
---|
630 | #job.spool_uri(document_uri) |
---|
631 | |
---|
632 | @sync |
---|
633 | def get_job_attributes(self, job_id, requested_attributes=None): |
---|
634 | |
---|
635 | self.assert_running() |
---|
636 | if requested_attributes is None: |
---|
637 | requested = self.job_attributes |
---|
638 | else: |
---|
639 | requested = [a for a in self.job_attributes \ |
---|
640 | if a in requested_attributes] |
---|
641 | |
---|
642 | _attributes = [attr.replace("-", "_") for attr in requested] |
---|
643 | attributes = [getattr(self, attr)(job_id) for attr in _attributes] |
---|
644 | return attributes |
---|
645 | |
---|
646 | @sync |
---|
647 | def set_job_attributes(self, job_id, attributes): |
---|
648 | |
---|
649 | self.assert_running() |
---|
650 | job = self.get_job(job_id) |
---|
651 | for attr in attributes: |
---|
652 | if attr in ("job-id", "job-k-octets", "job-state", "job-printer-uri"): |
---|
653 | raise ipp.errors.ClientErrorAttributesNotSettable(attr) |
---|
654 | elif attr == "job-name": |
---|
655 | job.name = attributes[attr] |
---|
656 | elif attr == "job-originating-user-name": |
---|
657 | job.creator = attributes[attr] # XXX: do we want this? |
---|
658 | |
---|
659 | @sync |
---|
660 | def restart_job(self, job_id, requesting_user_name=None): |
---|
661 | |
---|
662 | self.assert_running() |
---|
663 | job = self.get_job(job_id) |
---|
664 | try: |
---|
665 | job.restart() |
---|
666 | except InvalidJobStateException: |
---|
667 | # XXX |
---|
668 | raise ipp.errors.ClientErrorNotPossible |
---|
669 | |
---|
670 | self.finished_jobs.remove(job_id) |
---|
671 | self.pending_jobs.append(job_id) |
---|
672 | |
---|
673 | @sync |
---|
674 | def promote_job(self, job_id, requesting_user_name=None): |
---|
675 | # According to RFC 3998, we need to put the job at the front |
---|
676 | # of the queue (so that when the currently playing job |
---|
677 | # completes, this one will go next |
---|
678 | |
---|
679 | self.assert_running() |
---|
680 | job = self.get_job(job_id) |
---|
681 | job.priority = 1 # XXX we need to actually do something |
---|
682 | # correct here |
---|