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1
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import asyncio |
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2
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import functools |
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3
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4
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from aiogremlin import exception |
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5
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6
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7
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def error_handler(fn): |
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8
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@functools.wraps(fn) |
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9
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async def wrapper(self): |
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10
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msg = await fn(self) |
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11
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if msg: |
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12
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if msg.status_code not in [200, 206]: |
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self.close() |
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14
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raise exception.GremlinServerError( |
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15
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msg.status_code, |
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"{0}: {1}".format(msg.status_code, msg.message)) |
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msg = msg.data |
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return msg |
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return wrapper |
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21
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22
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class ResultSet: |
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"""Gremlin Server response implementated as an async iterator.""" |
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def __init__(self, request_id, timeout, loop): |
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self._response_queue = asyncio.Queue(loop=loop) |
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self._request_id = request_id |
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self._loop = loop |
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self._timeout = timeout |
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29
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self._done = asyncio.Event(loop=self._loop) |
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30
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self._aggregate_to = None |
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31
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32
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@property |
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33
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def request_id(self): |
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34
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return self._request_id |
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35
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36
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@property |
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37
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def stream(self): |
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38
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return self._response_queue |
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39
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40
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def queue_result(self, result): |
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41
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if result is None: |
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42
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self.close() |
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43
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self._response_queue.put_nowait(result) |
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45
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@property |
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def done(self): |
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""" |
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48
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Readonly property. |
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49
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50
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:returns: `asyncio.Event` object |
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51
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""" |
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52
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return self._done |
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53
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54
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@property |
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55
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def aggregate_to(self): |
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56
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return self._aggregate_to |
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57
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58
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@aggregate_to.setter |
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59
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def aggregate_to(self, val): |
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self._aggregate_to = val |
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61
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62
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def __aiter__(self): |
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return self |
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64
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65
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async def __anext__(self): |
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66
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msg = await self.one() |
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67
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if not msg: |
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68
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raise StopAsyncIteration |
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69
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return msg |
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70
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71
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def close(self): |
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72
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self.done.set() |
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73
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self._loop = None |
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74
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75
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@error_handler |
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76
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async def one(self): |
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"""Get a single message from the response stream""" |
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if not self._response_queue.empty(): |
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msg = self._response_queue.get_nowait() |
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80
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elif self.done.is_set(): |
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81
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msg = None |
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82
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else: |
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83
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try: |
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84
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msg = await asyncio.wait_for(self._response_queue.get(), |
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85
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timeout=self._timeout, |
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86
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loop=self._loop) |
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87
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except asyncio.TimeoutError: |
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88
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self.close() |
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89
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raise exception.ResponseTimeoutError('Response timed out') |
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90
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return msg |
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91
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92
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async def all(self): |
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93
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results = [] |
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94
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async for result in self: |
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95
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results.append(result) |
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96
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return results |
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97
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goblin-ogm /
aiogremlin
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