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1286dcbb PP |
1 | # The MIT License (MIT) |
2 | # | |
3 | # Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com> | |
4 | # | |
5 | # Permission is hereby granted, free of charge, to any person obtaining a copy | |
6 | # of this software and associated documentation files (the "Software"), to deal | |
7 | # in the Software without restriction, including without limitation the rights | |
8 | # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
9 | # copies of the Software, and to permit persons to whom the Software is | |
10 | # furnished to do so, subject to the following conditions: | |
11 | # | |
12 | # The above copyright notice and this permission notice shall be included in | |
13 | # all copies or substantial portions of the Software. | |
14 | # | |
15 | # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
18 | # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
20 | # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
21 | # THE SOFTWARE. | |
22 | ||
23 | from bt2 import native_bt, object, utils | |
c946c9de PP |
24 | from bt2 import interrupter as bt2_interrupter |
25 | from bt2 import component as bt2_component | |
26 | from bt2 import logging as bt2_logging | |
27 | from bt2 import value as bt2_value | |
1286dcbb PP |
28 | import bt2 |
29 | ||
30 | ||
bf403eb2 PP |
31 | class _QueryExecutorCommon: |
32 | @property | |
33 | def _common_ptr(self): | |
34 | return self._as_query_executor_ptr() | |
bbb3650f | 35 | |
bf403eb2 PP |
36 | @property |
37 | def is_interrupted(self): | |
38 | is_interrupted = native_bt.query_executor_is_interrupted(self._common_ptr) | |
39 | return bool(is_interrupted) | |
1286dcbb | 40 | |
bf403eb2 PP |
41 | @property |
42 | def logging_level(self): | |
43 | return native_bt.query_executor_get_logging_level(self._common_ptr) | |
1286dcbb | 44 | |
1286dcbb | 45 | |
bf403eb2 PP |
46 | class QueryExecutor(object._SharedObject, _QueryExecutorCommon): |
47 | _get_ref = staticmethod(native_bt.query_executor_get_ref) | |
48 | _put_ref = staticmethod(native_bt.query_executor_put_ref) | |
d73bb381 | 49 | |
bf403eb2 PP |
50 | def _as_query_executor_ptr(self): |
51 | return self._ptr | |
1286dcbb | 52 | |
bf403eb2 | 53 | def __init__(self, component_class, object, params=None): |
c946c9de | 54 | if not isinstance(component_class, bt2_component._ComponentClass): |
1286dcbb PP |
55 | err = False |
56 | ||
57 | try: | |
c946c9de | 58 | if not issubclass(component_class, bt2_component._UserComponent): |
1286dcbb PP |
59 | err = True |
60 | except TypeError: | |
61 | err = True | |
62 | ||
63 | if err: | |
64 | o = component_class | |
65 | raise TypeError("'{}' is not a component class object".format(o)) | |
66 | ||
67 | utils._check_str(object) | |
68 | ||
69 | if params is None: | |
70 | params_ptr = native_bt.value_null | |
71 | else: | |
72 | params = bt2.create_value(params) | |
73 | params_ptr = params._ptr | |
74 | ||
deec48a6 | 75 | cc_ptr = component_class._bt_component_class_ptr() |
bf403eb2 PP |
76 | assert cc_ptr is not None |
77 | ptr = native_bt.query_executor_create(cc_ptr, object, params_ptr) | |
78 | ||
79 | if ptr is None: | |
80 | raise bt2._MemoryError('cannot create query executor object') | |
81 | ||
82 | super().__init__(ptr) | |
83 | ||
84 | def add_interrupter(self, interrupter): | |
85 | utils._check_type(interrupter, bt2_interrupter.Interrupter) | |
86 | native_bt.query_executor_add_interrupter(self._ptr, interrupter._ptr) | |
87 | ||
88 | def interrupt(self): | |
89 | native_bt.query_executor_interrupt(self._ptr) | |
90 | ||
91 | def _set_logging_level(self, log_level): | |
92 | utils._check_log_level(log_level) | |
93 | status = native_bt.query_executor_set_logging_level(self._ptr, log_level) | |
94 | utils._handle_func_status(status, "cannot set query executor's logging level") | |
1286dcbb | 95 | |
bf403eb2 PP |
96 | logging_level = property( |
97 | fget=_QueryExecutorCommon.logging_level, fset=_set_logging_level | |
98 | ) | |
99 | ||
100 | @property | |
101 | def is_interrupted(self): | |
102 | is_interrupted = native_bt.query_executor_is_interrupted(self._ptr) | |
103 | return bool(is_interrupted) | |
104 | ||
105 | def query(self): | |
106 | status, result_ptr = native_bt.query_executor_query(self._ptr) | |
fb25b9e3 | 107 | utils._handle_func_status(status, 'cannot query component class') |
bf403eb2 | 108 | assert result_ptr is not None |
c946c9de | 109 | return bt2_value._create_from_ptr(result_ptr) |
bf403eb2 PP |
110 | |
111 | ||
112 | class _PrivateQueryExecutor(_QueryExecutorCommon): | |
113 | def __init__(self, ptr): | |
114 | self._ptr = ptr | |
115 | ||
116 | def _check_validity(self): | |
117 | if self._ptr is None: | |
118 | raise RuntimeError('this object is not valid anymore') | |
119 | ||
120 | def _as_query_executor_ptr(self): | |
121 | self._check_validity() | |
122 | return native_bt.private_query_executor_as_query_executor_const(self._ptr) | |
123 | ||
124 | def _invalidate(self): | |
125 | self._ptr = None |