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 uris(self): |
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127 | uris = ["ipp://localhost:8000/printers/" + self.name, |
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128 | "ipp://localhost/printers/" + self.name] |
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129 | return uris |
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130 | |
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131 | @property |
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132 | def uri(self): |
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133 | return self.uris[0] |
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134 | |
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135 | @property |
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136 | @sync |
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137 | def state(self): |
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138 | if self.current_job is not None: |
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139 | return States.PROCESSING |
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140 | elif len(self.pending_jobs) == 0: |
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141 | return States.IDLE |
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142 | else: |
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143 | return States.STOPPED |
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144 | |
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145 | @property |
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146 | @sync |
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147 | def active_jobs(self): |
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148 | jobs = self.pending_jobs[:] |
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149 | if self.current_job is not None: |
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150 | jobs.insert(0, self.current_job.id) |
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151 | return jobs |
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152 | |
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153 | @property |
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154 | def is_running(self): |
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155 | running = self.ident is not None and self.isAlive() and self._running |
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156 | return running |
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157 | |
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158 | ###################################################################### |
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159 | ### Methods ### |
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160 | ###################################################################### |
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161 | |
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162 | @sync |
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163 | def start_job(self): |
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164 | if not self.paused and self.current_job is None: |
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165 | try: |
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166 | job_id = heapq.heappop(self.pending_jobs) |
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167 | self.current_job = self.get_job(job_id) |
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168 | self.current_job.play() |
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169 | except IndexError: |
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170 | self.current_job = None |
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171 | except InvalidJobStateException: |
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172 | heapq.heappush(self.pending_jobs, self.current_job.id) |
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173 | self.current_job = None |
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174 | |
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175 | @sync |
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176 | def complete_job(self): |
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177 | if not self.paused and self.current_job is not None: |
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178 | try: |
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179 | if not self.current_job.is_done: |
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180 | self.current_job.stop() |
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181 | finally: |
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182 | self.finished_jobs.append(self.current_job.id) |
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183 | self.current_job = None |
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184 | |
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185 | @sync |
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186 | def get_job(self, job_id): |
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187 | if job_id not in self.jobs: |
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188 | raise InvalidJobException(job_id) |
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189 | return self.jobs[job_id] |
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190 | |
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191 | ###################################################################### |
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192 | ### IPP Attributes ### |
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193 | ###################################################################### |
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194 | |
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195 | @property |
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196 | def printer_uri_supported(self): |
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197 | return ipp.PrinterUriSupported(self.uri) |
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198 | @printer_uri_supported.setter |
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199 | def printer_uri_supported(self, val): |
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200 | raise ipp.errors.AttributesNotSettable("printer-uri-supported") |
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201 | |
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202 | @property |
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203 | def uri_authentication_supported(self): |
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204 | return ipp.UriAuthenticationSupported("none") |
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205 | @uri_authentication_supported.setter |
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206 | def uri_authentication_supported(self, val): |
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207 | raise ipp.errors.AttributesNotSettable("uri-authentication-supported") |
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208 | |
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209 | @property |
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210 | def uri_security_supported(self): |
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211 | return ipp.UriSecuritySupported("none") |
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212 | @uri_security_supported.setter |
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213 | def uri_security_supported(self, val): |
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214 | raise ipp.errors.AttributesNotSettable("uri-security-supported") |
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215 | |
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216 | @property |
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217 | def printer_name(self): |
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218 | return ipp.PrinterName(self.name) |
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219 | @printer_name.setter |
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220 | def printer_name(self, val): |
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221 | raise ipp.errors.AttributesNotSettable("printer-name") |
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222 | |
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223 | @property |
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224 | def printer_state(self): |
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225 | return ipp.PrinterState(self.state) |
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226 | @printer_state.setter |
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227 | def printer_state(self, val): |
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228 | raise ipp.errors.AttributesNotSettable("printer-state") |
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229 | |
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230 | @property |
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231 | def printer_state_reasons(self): |
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232 | return ipp.PrinterStateReasons("none") |
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233 | @printer_state_reasons.setter |
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234 | def printer_state_reasons(self, val): |
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235 | raise ipp.errors.AttributesNotSettable("printer-state-reasons") |
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236 | |
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237 | @property |
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238 | def ipp_versions_supported(self): |
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239 | return ipp.IppVersionsSupported(*self.config['ipp-versions']) |
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240 | @ipp_versions_supported.setter |
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241 | def ipp_versions_supported(self, val): |
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242 | raise ipp.errors.AttributesNotSettable("ipp-versions-supported") |
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243 | |
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244 | # XXX: We should query ourself for the supported operations |
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245 | @property |
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246 | def operations_supported(self): |
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247 | return ipp.OperationsSupported(ipp.OperationCodes.GET_JOBS) |
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248 | @operations_supported.setter |
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249 | def operations_supported(self, val): |
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250 | raise ipp.errors.AttributesNotSettable("operations-supported") |
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251 | |
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252 | @property |
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253 | def charset_configured(self): |
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254 | return ipp.CharsetConfigured("utf-8") # XXX |
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255 | @charset_configured.setter |
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256 | def charset_configured(self, val): |
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257 | raise ipp.errors.AttributesNotSettable("charset-configured") |
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258 | |
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259 | @property |
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260 | def charset_supported(self): |
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261 | return ipp.CharsetSupported("utf-8") # XXX |
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262 | @charset_supported.setter |
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263 | def charset_supported(self, val): |
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264 | raise ipp.errors.AttributesNotSettable("charset-supported") |
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265 | |
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266 | @property |
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267 | def natural_language_configured(self): |
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268 | return ipp.NaturalLanguageConfigured("en-us") |
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269 | @natural_language_configured.setter |
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270 | def natural_language_configured(self, val): |
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271 | raise ipp.errors.AttributesNotSettable("natural-language-configured") |
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272 | |
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273 | @property |
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274 | def generated_natural_language_supported(self): |
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275 | return ipp.GeneratedNaturalLanguageSupported("en-us") |
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276 | @generated_natural_language_supported.setter |
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277 | def generated_natural_language_supported(self, val): |
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278 | raise ipp.errors.AttributesNotSettable("generated-natural-language-supported") |
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279 | |
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280 | @property |
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281 | def document_format_default(self): |
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282 | return ipp.DocumentFormatDefault("application/octet-stream") |
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283 | @document_format_default.setter |
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284 | def document_format_default(self, val): |
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285 | raise ipp.errors.AttributesNotSettable("document-format-default") |
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286 | |
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287 | @property |
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288 | def document_format_supported(self): |
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289 | return ipp.DocumentFormatSupported("application/octet-stream", "audio/mp3") |
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290 | @document_format_supported.setter |
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291 | def document_format_supported(self, val): |
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292 | raise ipp.errors.AttributesNotSettable("document-format-supported") |
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293 | |
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294 | @property |
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295 | def printer_is_accepting_jobs(self): |
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296 | return ipp.PrinterIsAcceptingJobs(True) |
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297 | @printer_is_accepting_jobs.setter |
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298 | def printer_is_accepting_jobs(self, val): |
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299 | raise ipp.errors.AttributesNotSettable("printer-is-accepting-jobs") |
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300 | |
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301 | @property |
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302 | def queued_job_count(self): |
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303 | return ipp.QueuedJobCount(len(self.active_jobs)) |
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304 | @queued_job_count.setter |
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305 | def queued_job_count(self, val): |
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306 | raise ipp.errors.AttributesNotSettable("queued-job-count") |
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307 | |
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308 | @property |
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309 | def pdl_override_supported(self): |
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310 | return ipp.PdlOverrideSupported("not-attempted") |
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311 | @pdl_override_supported.setter |
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312 | def pdl_override_supported(self, val): |
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313 | raise ipp.errors.AttributesNotSettable("pdl-override-supported") |
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314 | |
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315 | @property |
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316 | def printer_up_time(self): |
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317 | return ipp.PrinterUpTime(int(time.time()) - self.time_created) |
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318 | @printer_up_time.setter |
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319 | def printer_up_time(self, val): |
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320 | raise ipp.errors.AttributesNotSettable("printer-up-time") |
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321 | |
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322 | @property |
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323 | def compression_supported(self): |
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324 | return ipp.CompressionSupported("none") |
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325 | @compression_supported.setter |
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326 | def compression_supported(self, val): |
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327 | raise ipp.errors.AttributesNotSettable("compression-supported") |
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328 | |
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329 | @property |
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330 | def multiple_operation_time_out(self): |
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331 | return ipp.MultipleOperationTimeOut(240) |
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332 | @multiple_operation_time_out.setter |
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333 | def multiple_operation_time_out(self, val): |
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334 | raise ipp.errors.AttributesNotSettable("multiple-operation-time-out") |
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335 | |
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336 | @property |
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337 | def multiple_document_jobs_supported(self): |
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338 | return ipp.MultipleDocumentJobsSupported(False) |
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339 | @multiple_document_jobs_supported.setter |
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340 | def multiple_document_jobs_supported(self, val): |
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341 | raise ipp.errors.AttributesNotSettable("multiple-document-jobs-supported") |
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342 | |
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343 | ###################################################################### |
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344 | ### Job IPP Attributes ### |
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345 | ###################################################################### |
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346 | |
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347 | def job_id(self, job_id): |
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348 | job = self.get_job(job_id) |
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349 | return ipp.JobId(job.id) |
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350 | |
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351 | def job_name(self, job_id): |
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352 | job = self.get_job(job_id) |
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353 | return ipp.JobName(job.name) |
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354 | |
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355 | def job_originating_user_name(self, job_id): |
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356 | job = self.get_job(job_id) |
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357 | return ipp.JobOriginatingUserName(job.creator) |
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358 | |
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359 | def job_k_octets(self, job_id): |
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360 | job = self.get_job(job_id) |
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361 | return ipp.JobKOctets(job.size) |
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362 | |
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363 | def job_state(self, job_id): |
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364 | job = self.get_job(job_id) |
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365 | return ipp.JobState(job.state) |
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366 | |
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367 | def job_printer_uri(self, job_id): |
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368 | job = self.get_job(job_id) |
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369 | return ipp.JobPrinterUri(self.uri) |
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370 | |
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371 | ###################################################################### |
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372 | ### IPP Operations ### |
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373 | ###################################################################### |
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374 | |
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375 | def print_job(self, document, document_name=None, document_format=None, |
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376 | document_natural_language=None, requesting_user_name=None, |
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377 | compression=None, job_name=None, job_k_octets=None): |
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378 | |
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379 | # create the job |
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380 | job_id = self.create_job( |
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381 | requesting_user_name=requesting_user_name, |
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382 | job_name=job_name, |
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383 | job_k_octets=job_k_octets) |
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384 | |
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385 | # send the document |
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386 | self.send_document( |
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387 | job_id, |
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388 | document, |
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389 | document_name=document_name, |
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390 | document_format=document_format, |
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391 | document_natural_language=document_natural_language, |
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392 | requesting_user_name=requesting_user_name, |
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393 | compression=compression, |
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394 | last_document=False) |
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395 | |
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396 | return job_id |
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397 | |
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398 | def verify_job(self, document_name=None, document_format=None, |
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399 | document_natural_language=None, requesting_user_name=None, |
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400 | compression=None, job_name=None, job_k_octets=None): |
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401 | |
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402 | job_id = self._next_job_id |
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403 | job = GutenbachJob( |
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404 | job_id, |
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405 | creator=requesting_user_name, |
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406 | name=job_name) |
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407 | job.spool(tempfile.TemporaryFile()) |
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408 | job.abort() |
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409 | del job |
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410 | |
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411 | def get_jobs(self, requesting_user_name=None, which_jobs=None, |
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412 | requested_attributes=None): |
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413 | |
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414 | # Filter by the which-jobs attribute |
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415 | if which_jobs is None: |
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416 | which_jobs = "not-completed" |
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417 | |
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418 | if which_jobs == "completed": |
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419 | jobs = [self.jobs[job_id] for job_id in self.finished_jobs] |
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420 | elif which_jobs == "not-completed": |
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421 | jobs = [self.jobs[job_id] for job_id in self.active_jobs] |
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422 | else: |
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423 | raise ipp.errors.ClientErrorAttributes( |
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424 | which_jobs, ipp.WhichJobs(which_jobs)) |
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425 | |
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426 | # Filter by username |
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427 | if requesting_user_name is None: |
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428 | user_jobs = jobs |
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429 | else: |
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430 | user_jobs = [job for job in jobs if job.creator == requesting_user_name] |
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431 | |
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432 | # Get the attributes of each job |
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433 | job_attrs = [self.get_job_attributes( |
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434 | job.id, requested_attributes=requested_attributes) for job in user_jobs] |
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435 | |
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436 | return job_attrs |
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437 | |
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438 | def print_uri(self): |
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439 | pass |
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440 | |
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441 | def create_job(self, requesting_user_name=None, job_name=None, |
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442 | job_k_octets=None): |
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443 | |
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444 | job_id = self._next_job_id |
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445 | self._next_job_id += 1 |
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446 | |
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447 | job = GutenbachJob( |
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448 | job_id, |
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449 | creator=requesting_user_name, |
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450 | name=job_name) |
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451 | |
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452 | self.jobs[job_id] = job |
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453 | self.pending_jobs.append(job_id) |
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454 | |
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455 | return job_id |
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456 | |
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457 | @sync |
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458 | def pause_printer(self): |
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459 | """Pause the printer. |
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460 | |
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461 | Does nothing if the printer is already paused. |
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462 | """ |
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463 | |
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464 | if not self.paused: |
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465 | if self.current_job is not None and self.current_job.is_playing: |
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466 | self.current_job.pause() |
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467 | self.paused = True |
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468 | logger.info("%s paused", str(self)) |
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469 | |
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470 | @sync |
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471 | def resume_printer(self): |
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472 | """Resume the printer. |
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473 | |
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474 | Does nothing if the printer is not paused. |
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475 | """ |
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476 | |
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477 | if self.paused: |
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478 | if self.current_job is not None: |
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479 | self.current_job.resume() |
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480 | self.paused = False |
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481 | logger.info("%s unpaused", str(self)) |
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482 | |
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483 | @sync |
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484 | def get_printer_attributes(self, requested_attributes=None): |
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485 | if requested_attributes is None: |
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486 | requested = self.printer_attributes |
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487 | else: |
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488 | requested = [a for a in self.printer_attributes \ |
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489 | if a in requested_attributes] |
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490 | |
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491 | _attributes = [attr.replace("-", "_") for attr in requested] |
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492 | attributes = [getattr(self, attr) for attr in _attributes] |
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493 | return attributes |
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494 | |
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495 | @sync |
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496 | def set_printer_attributes(self, job_id, attributes): |
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497 | for attr in attributes: |
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498 | try: |
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499 | setattr(self, attr, attributes[attr]) |
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500 | except AttributeError: |
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501 | raise ipp.errors.ClientErrorAttributes |
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502 | |
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503 | @sync |
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504 | def cancel_job(self, job_id, requesting_user_name=None): |
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505 | job = self.get_job(job_id) |
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506 | try: |
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507 | job.cancel() |
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508 | except InvalidJobStateException: |
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509 | # XXX |
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510 | raise |
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511 | |
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512 | @sync |
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513 | def send_document(self, job_id, document, document_name=None, |
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514 | document_format=None, document_natural_language=None, |
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515 | requesting_user_name=None, compression=None, |
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516 | last_document=None): |
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517 | |
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518 | job = self.get_job(job_id) |
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519 | job.spool(document) |
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520 | |
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521 | @sync |
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522 | def send_uri(self, job_id, document_uri, document_name=None, |
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523 | document_format=None, document_natural_language=None, |
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524 | requesting_user_name=None, compression=None, |
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525 | last_document=None): |
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526 | job = self.get_job(job_id) |
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527 | # XXX: need to validate URI |
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528 | # XXX: need to deal with the URI stream? |
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529 | #job.spool_uri(document_uri) |
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530 | |
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531 | @sync |
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532 | def get_job_attributes(self, job_id, requested_attributes=None): |
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533 | if requested_attributes is None: |
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534 | requested = self.job_attributes |
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535 | else: |
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536 | requested = [a for a in self.job_attributes \ |
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537 | if a in requested_attributes] |
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538 | |
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539 | _attributes = [attr.replace("-", "_") for attr in requested] |
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540 | attributes = [getattr(self, attr)(job_id) for attr in _attributes] |
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541 | return attributes |
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542 | |
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543 | @sync |
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544 | def set_job_attributes(self, job_id, attributes): |
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545 | job = self.get_job(job_id) |
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546 | for attr in attributes: |
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547 | if attr in ("job-id", "job-k-octets", "job-state", "job-printer-uri"): |
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548 | raise ipp.errors.ClientErrorAttributesNotSettable(attr) |
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549 | elif attr == "job-name": |
---|
550 | job.name = attributes[attr] |
---|
551 | elif attr == "job-originating-user-name": |
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552 | job.creator = attributes[attr] # XXX: do we want this? |
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553 | |
---|
554 | @sync |
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555 | def restart_job(self, job_id, requesting_user_name=None): |
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556 | job = self.get_job(job_id) |
---|
557 | try: |
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558 | job.restart() |
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559 | except InvalidJobStateException: |
---|
560 | # XXX |
---|
561 | raise ipp.errors.ClientErrorNotPossible |
---|
562 | |
---|
563 | self.finished_jobs.remove(job_id) |
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564 | self.pending_jobs.append(job_id) |
---|
565 | |
---|
566 | @sync |
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567 | def promote_job(self, job_id, requesting_user_name=None): |
---|
568 | # According to RFC 3998, we need to put the job at the front |
---|
569 | # of the queue (so that when the currently playing job |
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570 | # completes, this one will go next |
---|
571 | |
---|
572 | job = self.get_job(job_id) |
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573 | job.priority = 1 # XXX we need to actually do something |
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574 | # correct here |
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