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64 lines
2.0 KiB
Python
64 lines
2.0 KiB
Python
2 years ago
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import multiprocessing as mp
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import typing
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from multiprocessing.connection import Connection
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import peewee
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from communication.define import CmdType, KCommand, KReply, LOGGER
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from communication.exception import SkError
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from communication.model import init_database
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from communication.worker.service import SkWorkerProcess
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from communication.worker.state import SlotInfo
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class SkIO(object):
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connection: Connection
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def __init__(self):
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_connection, self.connection = mp.Pipe()
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self.worker = SkWorkerProcess(_connection)
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def start(self):
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LOGGER.info('START sample loop')
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def stop(self):
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LOGGER.info('STOP sample loop')
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def cmd(self, cmd: KCommand) -> KReply:
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self.worker.query.put(cmd)
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replay = self.connection.recv()
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if replay.type == CmdType.ERROR:
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if isinstance(replay.body, SkError):
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raise SkError(replay.body.errno, replay.body.msg)
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raise SkError(replay.body)
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return replay
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def setup(self, path):
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if self.worker and not self.worker.is_alive():
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self.worker.start()
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self.cmd(KCommand(CmdType.SETUP, body=path))
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database = peewee.SqliteDatabase(path.joinpath('etc', 'skio.db'))
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init_database(database)
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def ping(self) -> typing.List[SlotInfo]:
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pong = self.cmd(KCommand(CmdType.PING))
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return pong.body
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def read(self, name, remote=True, force=False):
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reply = self.cmd(KCommand(CmdType.READ, body={'name': name, 'remote': remote, 'force': force}))
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if reply.type == CmdType.SUCCESS:
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return reply.body
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def write(self, name, value, force=False):
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reply = self.cmd(KCommand(CmdType.WRITE, body={'name': name, 'value': value, 'force': force}))
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if reply.type == CmdType.SUCCESS:
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return reply.body
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def incr(self, name, value):
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old_value = self.read(name)
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value += old_value
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self.write(name, value)
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def is_ready(self):
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return self.worker.is_alive()
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