1 | from . import InvalidJobException, InvalidPrinterStateException, InvalidJobStateException |
---|
2 | from . import Job |
---|
3 | from gutenbach.ipp import PrinterStates as States |
---|
4 | import gutenbach.ipp as ipp |
---|
5 | import logging |
---|
6 | import time |
---|
7 | import threading |
---|
8 | import heapq |
---|
9 | import traceback |
---|
10 | import sys |
---|
11 | |
---|
12 | |
---|
13 | # initialize logger |
---|
14 | logger = logging.getLogger(__name__) |
---|
15 | |
---|
16 | class GutenbachPrinter(threading.Thread): |
---|
17 | |
---|
18 | # for IPP |
---|
19 | attributes = [ |
---|
20 | "printer-uri-supported", |
---|
21 | "uri-authentication-supported", |
---|
22 | "uri-security-supported", |
---|
23 | "printer-name", |
---|
24 | "printer-state", |
---|
25 | "printer-state-reasons", |
---|
26 | "ipp-versions-supported", |
---|
27 | "operations-supported", |
---|
28 | "charset-configured", |
---|
29 | "charset-supported", |
---|
30 | "natural-language-configured", |
---|
31 | "generated-natural-language-supported", |
---|
32 | "document-format-default", |
---|
33 | "document-format-supported", |
---|
34 | "printer-is-accepting-jobs", |
---|
35 | "queued-job-count", |
---|
36 | "pdl-override-supported", |
---|
37 | "printer-up-time", |
---|
38 | "compression-supported", |
---|
39 | "multiple-operation-time-out", |
---|
40 | "multiple-document-jobs-supported", |
---|
41 | ] |
---|
42 | |
---|
43 | operations = [ |
---|
44 | "print-job", |
---|
45 | "complete-job", |
---|
46 | "start-job", |
---|
47 | "get-job", |
---|
48 | "get-jobs", |
---|
49 | ] |
---|
50 | |
---|
51 | def __init__(self, name, *args, **kwargs): |
---|
52 | |
---|
53 | super(GutenbachPrinter, self).__init__(*args, **kwargs) |
---|
54 | |
---|
55 | self.name = name |
---|
56 | self.time_created = int(time.time()) |
---|
57 | |
---|
58 | self.finished_jobs = [] |
---|
59 | self.pending_jobs = [] |
---|
60 | self.current_job = None |
---|
61 | self.jobs = {} |
---|
62 | |
---|
63 | self.lock = threading.RLock() |
---|
64 | self.running = False |
---|
65 | self.paused = False |
---|
66 | |
---|
67 | # CUPS ignores jobs with id 0, so we have to start at 1 |
---|
68 | self._next_job_id = 1 |
---|
69 | |
---|
70 | def __repr__(self): |
---|
71 | return str(self) |
---|
72 | |
---|
73 | def __str__(self): |
---|
74 | return "<Printer '%s'>" % self.name |
---|
75 | |
---|
76 | ###################################################################### |
---|
77 | ### Properties ### |
---|
78 | ###################################################################### |
---|
79 | |
---|
80 | @property |
---|
81 | def uris(self): |
---|
82 | uris = ["ipp://localhost:8000/printers/" + self.name, |
---|
83 | "ipp://localhost/printers/" + self.name] |
---|
84 | return uris |
---|
85 | |
---|
86 | @property |
---|
87 | def uri(self): |
---|
88 | return self.uris[0] |
---|
89 | |
---|
90 | @property |
---|
91 | def state(self): |
---|
92 | with self.lock: |
---|
93 | if self.current_job is not None: |
---|
94 | val = States.PROCESSING |
---|
95 | elif len(self.pending_jobs) == 0: |
---|
96 | val = States.IDLE |
---|
97 | else: |
---|
98 | val = States.STOPPED |
---|
99 | return val |
---|
100 | |
---|
101 | @property |
---|
102 | def active_jobs(self): |
---|
103 | with self.lock: |
---|
104 | jobs = self.pending_jobs[:] |
---|
105 | if self.current_job is not None: |
---|
106 | jobs.insert(0, self.current_job.id) |
---|
107 | return jobs |
---|
108 | |
---|
109 | ###################################################################### |
---|
110 | ### Methods ### |
---|
111 | ###################################################################### |
---|
112 | |
---|
113 | def run(self): |
---|
114 | self.running = True |
---|
115 | while self.running: |
---|
116 | with self.lock: |
---|
117 | try: |
---|
118 | if self.current_job is None: |
---|
119 | self.start_job() |
---|
120 | elif self.current_job.is_finished: |
---|
121 | self.complete_job() |
---|
122 | except: |
---|
123 | logger.fatal(traceback.format_exc()) |
---|
124 | sys.exit(1) |
---|
125 | time.sleep(0.1) |
---|
126 | |
---|
127 | def start_job(self): |
---|
128 | with self.lock: |
---|
129 | if self.current_job is None: |
---|
130 | try: |
---|
131 | job_id = heapq.heappop(self.pending_jobs) |
---|
132 | self.current_job = self.get_job(job_id) |
---|
133 | self.current_job.play() |
---|
134 | except IndexError: |
---|
135 | self.current_job = None |
---|
136 | except InvalidJobStateException: |
---|
137 | heapq.heappush(self.pending_jobs, self.current_job.id) |
---|
138 | self.current_job = None |
---|
139 | |
---|
140 | def complete_job(self): |
---|
141 | with self.lock: |
---|
142 | if self.current_job is None: |
---|
143 | return |
---|
144 | |
---|
145 | try: |
---|
146 | if not self.current_job.is_finished: |
---|
147 | self.current_job.stop() |
---|
148 | finally: |
---|
149 | self.finished_jobs.append(self.current_job) |
---|
150 | self.current_job = None |
---|
151 | |
---|
152 | def stop(self): |
---|
153 | pass |
---|
154 | |
---|
155 | def get_job(self, job_id): |
---|
156 | with self.lock: |
---|
157 | if job_id not in self.jobs: |
---|
158 | raise InvalidJobException(job_id) |
---|
159 | job = self.jobs[job_id] |
---|
160 | return job |
---|
161 | |
---|
162 | ###################################################################### |
---|
163 | ### IPP Attributes ### |
---|
164 | ###################################################################### |
---|
165 | |
---|
166 | @property |
---|
167 | def printer_uri_supported(self): |
---|
168 | return ipp.PrinterUriSupported(self.uri) |
---|
169 | |
---|
170 | @property |
---|
171 | def uri_authentication_supported(self): |
---|
172 | return ipp.UriAuthenticationSupported("none") |
---|
173 | |
---|
174 | @property |
---|
175 | def uri_security_supported(self): |
---|
176 | return ipp.UriSecuritySupported("none") |
---|
177 | |
---|
178 | @property |
---|
179 | def printer_name(self): |
---|
180 | return ipp.PrinterName(self.name) |
---|
181 | |
---|
182 | @property |
---|
183 | def printer_state(self): |
---|
184 | return ipp.PrinterState(self.state) |
---|
185 | |
---|
186 | @property |
---|
187 | def printer_state_reasons(self): |
---|
188 | return ipp.PrinterStateReasons("none") |
---|
189 | |
---|
190 | @property |
---|
191 | def ipp_versions_supported(self): |
---|
192 | return ipp.IppVersionsSupported("1.0", "1.1") |
---|
193 | |
---|
194 | # XXX: We should query ourself for the supported operations |
---|
195 | @property |
---|
196 | def operations_supported(self): |
---|
197 | return ipp.OperationsSupported(ipp.OperationCodes.GET_JOBS) |
---|
198 | |
---|
199 | @property |
---|
200 | def charset_configured(self): |
---|
201 | return ipp.CharsetConfigured("utf-8") |
---|
202 | |
---|
203 | @property |
---|
204 | def charset_supported(self): |
---|
205 | return ipp.CharsetSupported("utf-8") |
---|
206 | |
---|
207 | @property |
---|
208 | def natural_language_configured(self): |
---|
209 | return ipp.NaturalLanguageConfigured("en-us") |
---|
210 | |
---|
211 | @property |
---|
212 | def generated_natural_language_supported(self): |
---|
213 | return ipp.GeneratedNaturalLanguageSupported("en-us") |
---|
214 | |
---|
215 | @property |
---|
216 | def document_format_default(self): |
---|
217 | return ipp.DocumentFormatDefault("application/octet-stream") |
---|
218 | |
---|
219 | @property |
---|
220 | def document_format_supported(self): |
---|
221 | return ipp.DocumentFormatSupported("application/octet-stream", "audio/mp3") |
---|
222 | |
---|
223 | @property |
---|
224 | def printer_is_accepting_jobs(self): |
---|
225 | return ipp.PrinterIsAcceptingJobs(True) |
---|
226 | |
---|
227 | @property |
---|
228 | def queued_job_count(self): |
---|
229 | return ipp.QueuedJobCount(len(self.active_jobs)) |
---|
230 | |
---|
231 | @property |
---|
232 | def pdl_override_supported(self): |
---|
233 | return ipp.PdlOverrideSupported("not-attempted") |
---|
234 | |
---|
235 | @property |
---|
236 | def printer_up_time(self): |
---|
237 | return ipp.PrinterUpTime(int(time.time()) - self.time_created) |
---|
238 | |
---|
239 | @property |
---|
240 | def compression_supported(self): |
---|
241 | return ipp.CompressionSupported("none") |
---|
242 | |
---|
243 | @property |
---|
244 | def multiple_operation_time_out(self): |
---|
245 | return ipp.MultipleOperationTimeOut(240) |
---|
246 | |
---|
247 | @property |
---|
248 | def multiple_document_jobs_supported(self): |
---|
249 | return ipp.MultipleDocumentJobsSupported(False) |
---|
250 | |
---|
251 | |
---|
252 | ###################################################################### |
---|
253 | ### IPP Operations ### |
---|
254 | ###################################################################### |
---|
255 | |
---|
256 | def print_job(self): |
---|
257 | pass |
---|
258 | |
---|
259 | def validate_job(self): |
---|
260 | pass |
---|
261 | |
---|
262 | def get_jobs(self, requesting_user_name="", which_jobs=None): |
---|
263 | # Filter by the which-jobs attribute |
---|
264 | if which_jobs is None: |
---|
265 | which_jobs = "not-completed" |
---|
266 | |
---|
267 | if which_jobs == "completed": |
---|
268 | jobs = [self.jobs[job_id] for job_id in self.finished_jobs] |
---|
269 | elif which_jobs == "not-completed": |
---|
270 | jobs = [self.jobs[job_id] for job_id in self.active_jobs] |
---|
271 | else: |
---|
272 | raise ipp.errors.ClientErrorAttributes( |
---|
273 | which_jobs, ipp.WhichJobs(which_jobs)) |
---|
274 | |
---|
275 | # Filter by username |
---|
276 | if requesting_user_name is None: |
---|
277 | user_jobs = jobs |
---|
278 | else: |
---|
279 | user_jobs = [job for job in jobs if job.creator == requesting_user_name] |
---|
280 | |
---|
281 | return user_jobs |
---|
282 | |
---|
283 | def print_uri(self): |
---|
284 | pass |
---|
285 | |
---|
286 | def create_job(self, requesting_user_name="", job_name="", job_k_octets=0): |
---|
287 | job_id = self._next_job_id |
---|
288 | self._next_job_id += 1 |
---|
289 | |
---|
290 | job = Job(job_id, |
---|
291 | self, |
---|
292 | creator=requesting_user_name, |
---|
293 | name=job_name, |
---|
294 | size=job_k_octets) |
---|
295 | |
---|
296 | self.jobs[job_id] = job |
---|
297 | self.pending_jobs.append(job_id) |
---|
298 | |
---|
299 | return job |
---|
300 | |
---|
301 | def pause_printer(self): |
---|
302 | pass |
---|
303 | |
---|
304 | def resume_printer(self): |
---|
305 | pass |
---|
306 | |
---|
307 | def get_printer_attributes(self, requested_attributes=None): |
---|
308 | if requested_attributes is None: |
---|
309 | requested = self.attributes |
---|
310 | else: |
---|
311 | requested = [a for a in self.attributes if a in requested_attributes] |
---|
312 | |
---|
313 | _attributes = [attr.replace("-", "_") for attr in requested] |
---|
314 | attributes = [getattr(self, attr) for attr in _attributes] |
---|
315 | return attributes |
---|
316 | |
---|
317 | def set_printer_attributes(self): |
---|
318 | pass |
---|