1 | from exceptions import InvalidJobException, InvalidPrinterStateException |
---|
2 | import os |
---|
3 | |
---|
4 | # initialize logger |
---|
5 | logger = logging.getLogger(__name__) |
---|
6 | |
---|
7 | class Job(object): |
---|
8 | |
---|
9 | attributes = [ |
---|
10 | "job-id", |
---|
11 | "job-name", |
---|
12 | "job-originating-user-name", |
---|
13 | "job-k-octets", |
---|
14 | "job-state", |
---|
15 | "job-printer-uri" |
---|
16 | ] |
---|
17 | |
---|
18 | def __init__(self, document=None): |
---|
19 | """Initialize a Gutenbach job. |
---|
20 | |
---|
21 | This sets the status to 'initializing' and optionally sets the |
---|
22 | document to print to the value of document. |
---|
23 | """ |
---|
24 | |
---|
25 | self._id = None |
---|
26 | self._name = document |
---|
27 | self._status = None |
---|
28 | self._document = document |
---|
29 | self._printer = None |
---|
30 | |
---|
31 | @property |
---|
32 | def job_id(self): |
---|
33 | return ipp.Attribute( |
---|
34 | 'job-id', |
---|
35 | [ipp.Value(ipp.Tags.INTEGER, self._id)]) |
---|
36 | |
---|
37 | @property |
---|
38 | def job_name(self): |
---|
39 | return ipp.Attribute( |
---|
40 | 'job-name', |
---|
41 | [ipp.Value(ipp.Tags.NAME_WITHOUT_LANGUAGE, self._name)]) |
---|
42 | |
---|
43 | # XXX: we need to actually calculate this! |
---|
44 | @property |
---|
45 | def job_originating_user_name(self): |
---|
46 | return ipp.Attribute( |
---|
47 | 'job-originating-user-name', |
---|
48 | [ipp.Value(ipp.Tags.NAME_WITHOUT_LANGUAGE, "jhamrick")]) |
---|
49 | |
---|
50 | # XXX: we need to actually calculate this! |
---|
51 | @property |
---|
52 | def job_k_octets(self): |
---|
53 | return ipp.Attribute( |
---|
54 | 'job-k-octets', |
---|
55 | [ipp.Value(ipp.Tags.INTEGER, 1)]) |
---|
56 | |
---|
57 | @property |
---|
58 | def job_state(self): |
---|
59 | return ipp.Attribute( |
---|
60 | 'job-state', |
---|
61 | [ipp.Value(ipp.Tags.ENUM, self._status)]) |
---|
62 | |
---|
63 | @property |
---|
64 | def job_printer_uri(self): |
---|
65 | return ipp.Attribute( |
---|
66 | 'job-printer-uri', |
---|
67 | [ipp.Value(ipp.Tags.URI, self._printer._uri)]) |
---|
68 | |
---|
69 | def get_job_attributes(self, request): |
---|
70 | attributes = [getattr(self, attr.replace("-", "_")) for attr in self.attributes] |
---|
71 | return attributes |
---|
72 | |
---|
73 | |
---|
74 | ####### |
---|
75 | @property |
---|
76 | def document(self): |
---|
77 | return self._document |
---|
78 | |
---|
79 | @document.setter |
---|
80 | def document(self, path): |
---|
81 | if not os.path.exists(path): |
---|
82 | raise IOError("Document '%s' does not exist!" % path) |
---|
83 | self._document = path |
---|
84 | |
---|
85 | @property |
---|
86 | def status(self): |
---|
87 | return self._status |
---|
88 | |
---|
89 | @property |
---|
90 | def printer(self): |
---|
91 | return self._printer |
---|
92 | |
---|
93 | def enqueue(self, printer, job_id): |
---|
94 | if self._status != None: |
---|
95 | raise InvalidJobException( |
---|
96 | "Cannot enqueue a job that has " + \ |
---|
97 | "already been initialized!") |
---|
98 | self._printer = printer |
---|
99 | self._job_id = job_id |
---|
100 | self._status = const.JobStates.PENDING |
---|
101 | |
---|
102 | def play(self): |
---|
103 | if self.status != 'active': |
---|
104 | raise InvalidJobException( |
---|
105 | "Cannot play an inactive job!") |
---|
106 | |
---|
107 | self._status = const.JobStates.PROCESSING |
---|
108 | # TODO: add external call to music player |
---|
109 | print "Playing job %s" % str(self) |
---|
110 | self._printer.complete_job(self._id) |
---|
111 | |
---|
112 | def finish(self): |
---|
113 | self._status = const.JobStates.COMPLETE |
---|
114 | |
---|
115 | def __repr__(self): |
---|
116 | return str(self) |
---|
117 | |
---|
118 | def __str__(self): |
---|
119 | return "<Job %d '%s'>" % \ |
---|
120 | (self._id if self._id is not None else -1, \ |
---|
121 | self._document) |
---|