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import threading |
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2
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from queue import Queue, Empty |
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3
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4
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from libAnt.driver import Driver, DriverException |
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from libAnt.message import * |
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7
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8
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class Network: |
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9
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def __init__(self, key: bytes = b'\x00' * 8, name: str = None): |
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self.key = key |
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self.name = name |
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12
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self.number = 0 |
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14
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def __str__(self): |
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return self.name |
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16
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17
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18
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class Pump(threading.Thread): |
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def __init__(self, driver: Driver, out: Queue, onSucces, onFailure): |
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super().__init__() |
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self._stopper = threading.Event() |
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self._driver = driver |
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self._out = out |
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self._waiters = [] |
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self._onSuccess = onSucces |
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self._onFailure = onFailure |
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def stop(self): |
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self._stopper.set() |
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def stopped(self): |
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return self._stopper.isSet() |
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34
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def run(self): |
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with self._driver as d: |
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while not self._stopper.is_set(): |
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# Write |
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try: |
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outMsg = self._out.get(block=False) |
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self._waiters.append(outMsg) |
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d.write(outMsg) |
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except Empty: |
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pass |
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except DriverException: |
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self._stopper.set() |
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break |
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47
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48
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# Read |
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49
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try: |
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50
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msg = d.read() # TODO: add timeout to driver |
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51
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if msg.type == MESSAGE_CHANNEL_EVENT: |
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# This is a response to our outgoing message |
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for w in self._waiters: |
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if w.type == msg.content[1]: # ACK |
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self._waiters.remove(w) |
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# TODO: Call waiter callback from tuple (waiter, callback) |
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57
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break |
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58
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elif msg.type == MESSAGE_CHANNEL_BROADCAST_DATA: |
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59
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bmsg = BroadcastMessage(msg.type, msg.content).build(msg.content) |
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60
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try: |
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self._onSuccess(bmsg) |
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except Exception as e: |
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63
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self._onFailure(e) |
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64
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65
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except DriverException as e: |
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self._stopper.set() |
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67
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self._onFailure(e) |
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68
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break |
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69
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70
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71
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class Node: |
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72
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def __init__(self, driver, name=None): |
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self._driver = driver |
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74
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self._name = name |
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75
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self._out = Queue() |
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76
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self._pump = None |
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77
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self._configMessages = Queue() |
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78
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79
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def __enter__(self): |
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80
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return self |
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81
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82
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def __exit__(self, exc_type, exc_val, exc_tb): |
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self.stop() |
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84
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85
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def start(self, onSuccess, onFailure): |
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86
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if not self.isRunning(): |
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87
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self._pump = Pump(self._driver, self._out, onSuccess, onFailure) |
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88
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self._pump.start() |
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89
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90
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def stop(self): |
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91
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if self.isRunning(): |
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92
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self._pump.stop() |
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93
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self._pump.join() |
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94
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95
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def isRunning(self): |
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96
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if self._pump is None: |
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97
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return False |
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98
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return self._pump.is_alive() |
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99
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100
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def getCapabilities(self): |
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101
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pass |
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102
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half2me /
libant
