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 | |
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12 | |
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13 | # initialize logger |
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14 | logger = logging.getLogger(__name__) |
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15 | |
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16 | class GutenbachPrinter(threading.Thread): |
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17 | |
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18 | # for IPP |
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19 | printer_attributes = [ |
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20 | "printer-uri-supported", |
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21 | "uri-authentication-supported", |
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22 | "uri-security-supported", |
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23 | "printer-name", |
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24 | "printer-state", |
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25 | "printer-state-reasons", |
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26 | "ipp-versions-supported", |
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27 | "operations-supported", |
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28 | "charset-configured", |
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29 | "charset-supported", |
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30 | "natural-language-configured", |
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31 | "generated-natural-language-supported", |
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32 | "document-format-default", |
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33 | "document-format-supported", |
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34 | "printer-is-accepting-jobs", |
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35 | "queued-job-count", |
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36 | "pdl-override-supported", |
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37 | "printer-up-time", |
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38 | "compression-supported", |
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39 | "multiple-operation-time-out", |
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40 | "multiple-document-jobs-supported", |
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41 | ] |
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42 | |
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43 | job_attributes = [ |
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44 | "job-id", |
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45 | "job-name", |
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46 | "job-originating-user-name", |
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47 | "job-k-octets", |
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48 | "job-state", |
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49 | "job-printer-uri" |
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50 | ] |
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51 | |
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52 | operations = [ |
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53 | "print-job", |
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54 | "validate-job", |
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55 | "get-jobs", |
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56 | "print-uri", |
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57 | "create-job", |
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58 | "pause-printer", |
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59 | "resume-printer", |
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60 | "get-printer-attributes", |
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61 | "set-printer-attributes", |
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62 | "cancel-job", |
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63 | "send-document", |
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64 | "send-uri", |
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65 | "get-job-attributes", |
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66 | "set-job-attributes", |
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67 | "restart-job", |
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68 | "promote-job" |
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69 | ] |
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70 | |
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71 | def __init__(self, name, config, *args, **kwargs): |
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72 | |
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73 | super(GutenbachPrinter, self).__init__(*args, **kwargs) |
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74 | |
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75 | self.name = name |
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76 | self.config = config |
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77 | self.time_created = int(time.time()) |
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78 | |
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79 | self.finished_jobs = [] |
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80 | self.pending_jobs = [] |
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81 | self.current_job = None |
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82 | self.jobs = {} |
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83 | |
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84 | self.lock = threading.RLock() |
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85 | self.running = False |
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86 | self.paused = False |
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87 | |
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88 | # CUPS ignores jobs with id 0, so we have to start at 1 |
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89 | self._next_job_id = 1 |
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90 | |
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91 | def __repr__(self): |
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92 | return str(self) |
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93 | |
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94 | def __str__(self): |
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95 | return "<Printer '%s'>" % self.name |
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96 | |
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97 | def run(self): |
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98 | self.running = True |
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99 | while self.running: |
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100 | with self.lock: |
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101 | try: |
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102 | if self.current_job is None: |
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103 | self.start_job() |
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104 | elif self.current_job.is_done: |
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105 | self.complete_job() |
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106 | except: |
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107 | logger.fatal(traceback.format_exc()) |
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108 | sys.exit(1) |
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109 | time.sleep(0.1) |
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110 | |
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111 | ###################################################################### |
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112 | ### Properties ### |
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113 | ###################################################################### |
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114 | |
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115 | @property |
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116 | def uris(self): |
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117 | uris = ["ipp://localhost:8000/printers/" + self.name, |
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118 | "ipp://localhost/printers/" + self.name] |
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119 | return uris |
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120 | |
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121 | @property |
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122 | def uri(self): |
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123 | return self.uris[0] |
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124 | |
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125 | @property |
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126 | def state(self): |
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127 | with self.lock: |
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128 | if self.current_job is not None: |
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129 | val = States.PROCESSING |
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130 | elif len(self.pending_jobs) == 0: |
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131 | val = States.IDLE |
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132 | else: |
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133 | val = States.STOPPED |
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134 | return val |
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135 | |
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136 | @property |
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137 | def active_jobs(self): |
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138 | with self.lock: |
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139 | jobs = self.pending_jobs[:] |
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140 | if self.current_job is not None: |
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141 | jobs.insert(0, self.current_job.id) |
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142 | return jobs |
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143 | |
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144 | ###################################################################### |
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145 | ### Methods ### |
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146 | ###################################################################### |
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147 | |
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148 | def start_job(self): |
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149 | with self.lock: |
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150 | if self.current_job is None: |
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151 | try: |
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152 | job_id = heapq.heappop(self.pending_jobs) |
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153 | self.current_job = self.get_job(job_id) |
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154 | self.current_job.play() |
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155 | except IndexError: |
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156 | self.current_job = None |
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157 | except InvalidJobStateException: |
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158 | heapq.heappush(self.pending_jobs, self.current_job.id) |
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159 | self.current_job = None |
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160 | |
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161 | def complete_job(self): |
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162 | with self.lock: |
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163 | if self.current_job is None: |
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164 | return |
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165 | |
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166 | try: |
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167 | if not self.current_job.is_done: |
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168 | self.current_job.stop() |
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169 | finally: |
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170 | self.finished_jobs.append(self.current_job.id) |
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171 | self.current_job = None |
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172 | |
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173 | def get_job(self, job_id): |
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174 | with self.lock: |
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175 | if job_id not in self.jobs: |
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176 | raise InvalidJobException(job_id) |
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177 | job = self.jobs[job_id] |
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178 | return job |
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179 | |
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180 | ###################################################################### |
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181 | ### IPP Attributes ### |
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182 | ###################################################################### |
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183 | |
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184 | @property |
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185 | def printer_uri_supported(self): |
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186 | return ipp.PrinterUriSupported(self.uri) |
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187 | |
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188 | @property |
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189 | def uri_authentication_supported(self): |
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190 | return ipp.UriAuthenticationSupported("none") |
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191 | |
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192 | @property |
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193 | def uri_security_supported(self): |
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194 | return ipp.UriSecuritySupported("none") |
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195 | |
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196 | @property |
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197 | def printer_name(self): |
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198 | return ipp.PrinterName(self.name) |
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199 | |
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200 | @property |
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201 | def printer_state(self): |
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202 | return ipp.PrinterState(self.state) |
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203 | |
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204 | @property |
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205 | def printer_state_reasons(self): |
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206 | return ipp.PrinterStateReasons("none") |
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207 | |
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208 | @property |
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209 | def ipp_versions_supported(self): |
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210 | return ipp.IppVersionsSupported(*self.config['ipp-versions']) |
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211 | |
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212 | # XXX: We should query ourself for the supported operations |
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213 | @property |
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214 | def operations_supported(self): |
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215 | return ipp.OperationsSupported(ipp.OperationCodes.GET_JOBS) |
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216 | |
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217 | @property |
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218 | def charset_configured(self): |
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219 | return ipp.CharsetConfigured("utf-8") |
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220 | |
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221 | @property |
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222 | def charset_supported(self): |
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223 | return ipp.CharsetSupported("utf-8") |
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224 | |
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225 | @property |
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226 | def natural_language_configured(self): |
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227 | return ipp.NaturalLanguageConfigured("en-us") |
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228 | |
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229 | @property |
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230 | def generated_natural_language_supported(self): |
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231 | return ipp.GeneratedNaturalLanguageSupported("en-us") |
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232 | |
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233 | @property |
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234 | def document_format_default(self): |
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235 | return ipp.DocumentFormatDefault("application/octet-stream") |
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236 | |
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237 | @property |
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238 | def document_format_supported(self): |
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239 | return ipp.DocumentFormatSupported("application/octet-stream", "audio/mp3") |
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240 | |
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241 | @property |
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242 | def printer_is_accepting_jobs(self): |
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243 | return ipp.PrinterIsAcceptingJobs(True) |
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244 | |
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245 | @property |
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246 | def queued_job_count(self): |
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247 | return ipp.QueuedJobCount(len(self.active_jobs)) |
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248 | |
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249 | @property |
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250 | def pdl_override_supported(self): |
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251 | return ipp.PdlOverrideSupported("not-attempted") |
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252 | |
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253 | @property |
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254 | def printer_up_time(self): |
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255 | return ipp.PrinterUpTime(int(time.time()) - self.time_created) |
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256 | |
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257 | @property |
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258 | def compression_supported(self): |
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259 | return ipp.CompressionSupported("none") |
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260 | |
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261 | @property |
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262 | def multiple_operation_time_out(self): |
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263 | return ipp.MultipleOperationTimeOut(240) |
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264 | |
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265 | @property |
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266 | def multiple_document_jobs_supported(self): |
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267 | return ipp.MultipleDocumentJobsSupported(False) |
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268 | |
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269 | ###################################################################### |
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270 | ### Job IPP Attributes ### |
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271 | ###################################################################### |
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272 | |
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273 | def job_id(self, job_id): |
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274 | job = self.get_job(job_id) |
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275 | return ipp.JobId(job.id) |
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276 | |
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277 | def job_name(self, job_id): |
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278 | job = self.get_job(job_id) |
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279 | return ipp.JobName(job.name) |
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280 | |
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281 | def job_originating_user_name(self, job_id): |
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282 | job = self.get_job(job_id) |
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283 | return ipp.JobOriginatingUserName(job.creator) |
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284 | |
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285 | def job_k_octets(self, job_id): |
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286 | job = self.get_job(job_id) |
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287 | return ipp.JobKOctets(job.size) |
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288 | |
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289 | def job_state(self, job_id): |
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290 | job = self.get_job(job_id) |
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291 | return ipp.JobState(job.state) |
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292 | |
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293 | def job_printer_uri(self, job_id): |
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294 | job = self.get_job(job_id) |
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295 | return ipp.JobPrinterUri(self.uri) |
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296 | |
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297 | ###################################################################### |
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298 | ### IPP Operations ### |
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299 | ###################################################################### |
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300 | |
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301 | def print_job(self): |
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302 | pass |
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303 | |
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304 | def validate_job(self): |
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305 | pass |
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306 | |
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307 | def get_jobs(self, requesting_user_name=None, which_jobs=None, |
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308 | requested_attributes=None): |
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309 | |
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310 | # Filter by the which-jobs attribute |
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311 | if which_jobs is None: |
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312 | which_jobs = "not-completed" |
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313 | |
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314 | if which_jobs == "completed": |
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315 | jobs = [self.jobs[job_id] for job_id in self.finished_jobs] |
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316 | elif which_jobs == "not-completed": |
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317 | jobs = [self.jobs[job_id] for job_id in self.active_jobs] |
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318 | else: |
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319 | raise ipp.errors.ClientErrorAttributes( |
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320 | which_jobs, ipp.WhichJobs(which_jobs)) |
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321 | |
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322 | # Filter by username |
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323 | if requesting_user_name is None: |
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324 | user_jobs = jobs |
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325 | else: |
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326 | user_jobs = [job for job in jobs if job.creator == requesting_user_name] |
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327 | |
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328 | # Get the attributes of each job |
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329 | job_attrs = [self.get_job_attributes( |
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330 | job.id, requested_attributes=requested_attributes) for job in user_jobs] |
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331 | |
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332 | return job_attrs |
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333 | |
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334 | def print_uri(self): |
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335 | pass |
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336 | |
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337 | def create_job(self, requesting_user_name=None, job_name=None, job_k_octets=None): |
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338 | job_id = self._next_job_id |
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339 | self._next_job_id += 1 |
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340 | |
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341 | job = GutenbachJob( |
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342 | job_id, |
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343 | creator=requesting_user_name, |
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344 | name=job_name) |
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345 | |
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346 | self.jobs[job_id] = job |
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347 | self.pending_jobs.append(job_id) |
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348 | |
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349 | return job_id |
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350 | |
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351 | def pause_printer(self): |
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352 | pass |
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353 | |
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354 | def resume_printer(self): |
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355 | pass |
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356 | |
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357 | def get_printer_attributes(self, requested_attributes=None): |
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358 | if requested_attributes is None: |
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359 | requested = self.printer_attributes |
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360 | else: |
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361 | requested = [a for a in self.printer_attributes \ |
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362 | if a in requested_attributes] |
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363 | |
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364 | _attributes = [attr.replace("-", "_") for attr in requested] |
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365 | attributes = [getattr(self, attr) for attr in _attributes] |
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366 | return attributes |
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367 | |
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368 | def set_printer_attributes(self): |
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369 | pass |
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370 | |
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371 | def cancel_job(self, job_id, requesting_user_name=None): |
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372 | job = self.get_job(job_id) |
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373 | try: |
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374 | job.cancel() |
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375 | except InvalidJobStateException: |
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376 | # XXX |
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377 | raise |
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378 | |
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379 | def send_document(self, job_id, document, document_name=None, |
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380 | document_format=None, document_natural_language=None, |
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381 | requesting_user_name=None, compression=None, |
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382 | last_document=None): |
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383 | |
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384 | job = self.get_job(job_id) |
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385 | job.spool(document) |
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386 | |
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387 | def send_uri(self): |
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388 | pass |
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389 | |
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390 | def get_job_attributes(self, job_id, requested_attributes=None): |
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391 | if requested_attributes is None: |
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392 | requested = self.job_attributes |
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393 | else: |
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394 | requested = [a for a in self.job_attributes \ |
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395 | if a in requested_attributes] |
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396 | |
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397 | _attributes = [attr.replace("-", "_") for attr in requested] |
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398 | attributes = [getattr(self, attr)(job_id) for attr in _attributes] |
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399 | return attributes |
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400 | |
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401 | def set_job_attributes(self): |
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402 | pass |
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403 | |
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404 | def restart_job(self, job_id, requesting_user_name=None): |
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405 | job = self.get_job(job_id) |
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406 | try: |
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407 | job.restart() |
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408 | except InvalidJobStateException: |
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409 | # XXX |
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410 | raise ipp.errors.ClientErrorNotPossible |
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411 | |
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412 | with self.lock: |
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413 | self.finished_jobs.remove(job_id) |
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414 | self.pending_jobs.append(job_id) |
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415 | |
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416 | def promote_job(self, job_id, requesting_user_name=None): |
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417 | # According to RFC 3998, we need to put the job at the front |
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418 | # of the queue (so that when the currently playing job |
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419 | # completes, this one will go next |
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420 | |
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421 | job = self.get_job(job_id) |
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422 | job.priority = 1 # XXX we need to actually do something |
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423 | # correct here |
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