LIRC libraries: /home/mk/tmp/lirc/python-pkg/lirc/async_client.py (ba530e4 2017-01-22 19:05:53 +0100) Source File

| LIRC libraries LinuxInfraredRemoteControl

async_client.py
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1 ''' Asynchronous python bindings for the lircd socket interface. '''
2
8
9
39
40 # pylint: disable=W0613
41
42 import asyncio
43 from lirc.client import AbstractConnection as AbstractConnection
44
45
46 class AsyncConnection(object):
47 ''' Asynchronous read interface on top of an AbstractConnection.
48
49 Parameters:
50 - connection: Typically a lirc.RawConnection or lirc.LircdConnection.
51 - loop: AbstractEventLoop, typically obtained using
52 asyncio.get_event_loop().
53 '''
54
55 def __init__(self, connection: AbstractConnection,
56 loop: asyncio.AbstractEventLoop):
57
58 def read_from_fd():
59 ''' Read data from the connection fd and put into queue. '''
60 line = self._conn.readline(0)
61 if line:
62 asyncio.ensure_future(self._queue.put(line))
63
64 self._conn = connection
65 self._loop = loop
66 self._queue = asyncio.Queue(loop=self._loop)
67 self._loop.add_reader(self._conn.fileno(), read_from_fd)
68
69 def close(self):
70 ''' Clean up loop and the base connection. '''
71 self._loop.remove_reader(self._conn.fileno())
72
73 async def readline(self) -> str:
74 ''' Asynchronous get next line from the connection. '''
75 return await self._queue.get()
76
77 def __aiter__(self):
78 ''' Return async iterator. '''
79 return self
80
81 async def __anext__(self):
82 ''' Implement async iterator.next(). '''
83 return await self._queue.get()
84
85 async def __aenter__(self):
86 ''' Implement "async with". '''
87 return self
88
89 async def __aexit__(self, exc_type, exc, traceback):
90 ''' Implement exit from "async with". '''
91 self.close()
92
93
lirc.async_client.AsyncConnection.readline
def readline(self)
Definition: async_client.py:73
lirc.async_client.AsyncConnection.__aenter__
def __aenter__(self)
Definition: async_client.py:85
lirc.async_client.AsyncConnection._loop
_loop
Definition: async_client.py:65
lirc.async_client.AsyncConnection._queue
_queue
Definition: async_client.py:66
lirc.async_client.AsyncConnection.close
def close(self)
Clean up loop and the base connection.
Definition: async_client.py:70
lirc.async_client.AsyncConnection._conn
_conn
Read data from the connection fd and put into queue.
Definition: async_client.py:64
lirc.async_client.AsyncConnection.__anext__
def __anext__(self)
Definition: async_client.py:81
lirc.async_client.AsyncConnection.__aiter__
def __aiter__(self)
Return async iterator.
Definition: async_client.py:78
lirc.async_client.AsyncConnection.__aexit__
def __aexit__(self, exc_type, exc, traceback)
Definition: async_client.py:89
lirc.client
Definition: client.py:1