[1198] | 1 | import asyncore
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| 2 | import socket
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| 3 | from io import StringIO
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| 4 | from typing import Callable, Dict
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| 5 | import threading
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| 6 | import asyncio
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| 7 | import queue
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| 8 | import time
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| 9 |
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| 10 | class EventConsumer(threading.Thread):
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| 11 | def __init__(self) -> None:
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| 12 | threading.Thread.__init__(self)
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| 13 | self.condition = threading.Condition()
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| 14 | self.queue = queue.Queue()
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| 15 | self.is_running = True
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| 16 | self.runningChangeEventCallback = None
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| 17 | self.populationsGroupChangeEventCallback = None
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| 18 | self.genepoolsGroupChangeEventCallback = None
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| 19 | self.messagesEventCallback = None
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| 20 |
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| 21 | def run(self):
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| 22 | while self.is_running:
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| 23 | if self.queue.empty():
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| 24 | time.sleep(0.0001)
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| 25 | else:
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| 26 | block = self.queue.get()
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| 27 | #print("------- EVENT -------")
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| 28 | #print(block)
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| 29 | #print("------- END EVENT -------")
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| 30 | header: str = block[:block.find('\n')]
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| 31 | if header.find("running_changed") != -1 and self.runningChangeEventCallback:
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| 32 | self.runningChangeEventCallback(block, header)
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| 33 | elif header.find("populations/groups_changed") != -1 and self.populationsGroupChangeEventCallback:
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| 34 | self.populationsGroupChangeEventCallback(block, header)
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| 35 | elif header.find("genepools/groups_changed") != -1 and self.genepoolsGroupChangeEventCallback:
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| 36 | self.genepoolsGroupChangeEventCallback(block, header)
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| 37 | elif header.find("messages") != -1 and self.messagesEventCallback:
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| 38 | self.messagesEventCallback(block, header)
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| 39 |
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| 40 | def stop(self):
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| 41 | self.is_running = False
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| 42 |
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| 43 | class CommWrapper(object):
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| 44 | def start(self, host: str, port: int):
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| 45 | self.client = Comm(host, port, self.onClose)
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| 46 | self.thread = threading.Thread(target=asyncore.loop, kwargs={'timeout': 0.0005})
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| 47 | self.thread.start()
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| 48 | self.client.write_data("version 5")
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| 49 | self.client.write_data("use request_id")
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| 50 | self.client.write_data("use needfile_id")
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| 51 | self.client.write_data("use groupnames")
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| 52 | self.connected = True
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| 53 |
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| 54 | def stop(self):
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| 55 | self.client.close()
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| 56 | self.thread.join()
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| 57 |
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| 58 | def onClose(self):
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| 59 | self.connected = False
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| 60 |
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| 61 | def close(self):
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| 62 | self.thread.join()
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| 63 |
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| 64 | async def read(self, i: int, timeout: float) -> str:
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| 65 | data = ""
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| 66 | try:
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| 67 | data = await asyncio.wait_for(self._read(i), timeout=timeout)
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| 68 | except:
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| 69 | pass
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| 70 | #print("response")
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| 71 | #print(repr(data))
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| 72 | return data
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| 73 |
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| 74 | async def _read(self, i: int) -> str:
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| 75 | while True:
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| 76 | if i in self.client.blocks:
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| 77 | return self.client.blocks.pop(i)
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| 78 | try:
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| 79 | await asyncio.sleep(0.005)
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| 80 | except asyncio.CancelledError:
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| 81 | break
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| 82 |
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| 83 | def write(self, data: str, index = -1) -> int:
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| 84 | command = data.split(' ')[0]
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| 85 | if command in ["info", "set", "get", "call", "reg", "file"]:
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| 86 | if index == -1:
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| 87 | index = self.client.getIndex()
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| 88 | data = command + ' r' + str(index) + data[len(command):]
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| 89 | self.client.write_data(data)
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| 90 | return index
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| 91 |
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| 92 | class Comm(asyncore.dispatcher):
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| 93 | def __init__(self, host: str, port: int, onClose: Callable[[None], None] = None) -> None:
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| 94 | self.onClose = onClose
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| 95 |
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| 96 | asyncore.dispatcher.__init__(self)
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| 97 | self.create_socket(socket.AF_INET, socket.SOCK_STREAM)
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| 98 | self.host = host
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| 99 | self.port = port
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| 100 |
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| 101 | self.connect((self.host, self.port))
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| 102 | self.out_buffer = "".encode()
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| 103 | self.in_buffer = StringIO()
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| 104 | self.blocks: Dict[str] = {}
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| 105 | self._tmpbuff = StringIO()
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| 106 | self.index = 1
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| 107 | self.is_embedded = False
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| 108 |
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| 109 | self.consumer = EventConsumer()
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| 110 | self.consumer.start()
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| 111 |
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| 112 | def writable(self):
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| 113 | is_writable = (len(self.out_buffer) > 0)
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| 114 | return is_writable
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| 115 |
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| 116 | def readable(self):
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| 117 | return True
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| 118 |
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| 119 | def handle_close(self):
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| 120 | self.close()
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| 121 |
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| 122 | def close(self) -> None:
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| 123 | self.in_buffer.close()
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| 124 | self._tmpbuff.close()
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| 125 | self.consumer.stop()
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| 126 | if self.onClose:
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| 127 | self.onClose()
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| 128 | super().close()
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| 129 |
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| 130 | def handle_connect(self):
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| 131 | pass
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| 132 |
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| 133 | def handle_read(self):
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| 134 | rec_msg = self.recv(1024)
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| 135 | self.in_buffer.write(rec_msg.decode())
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| 136 | self.parse()
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| 137 |
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| 138 | def handle_write(self) -> None:
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| 139 | sent = self.send(self.out_buffer)
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| 140 | self.out_buffer = self.out_buffer[sent:]
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| 141 |
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| 142 | def write_data(self, data: str):
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| 143 | #print("request")
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| 144 | #print(repr(data))
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| 145 | self.out_buffer += (data + '\n' if data[-1] != '\n' else '').encode()
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| 146 |
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| 147 | def read_data(self):
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| 148 | return self.in_buffer.getvalue()
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| 149 |
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| 150 | def parse(self):
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| 151 | self.in_buffer.seek(0)
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| 152 | for line in self.in_buffer:
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| 153 | if line.endswith('\n'):
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| 154 | self._tmpbuff.write(line)
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| 155 | if line.endswith(":~\n"):
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| 156 | self.is_embedded = True
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| 157 | if self.is_embedded:
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| 158 | if line.endswith("~\n") and not line.endswith("\~\n"):
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| 159 | self.is_embedded = False
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| 160 | else:
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| 161 | if line.startswith("eof"):
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| 162 | block = self._tmpbuff.getvalue().strip()
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| 163 | if block.startswith("event"):
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| 164 | self.consumer.queue.put(block)
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| 165 | self._tmpbuff.truncate(0)
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| 166 | self._tmpbuff.seek(0)
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| 167 | elif line.startswith("ok") or line.startswith("error") or line.startswith("needfile"):
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| 168 | block = self._tmpbuff.getvalue()
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| 169 | if line.find(' ') > -1:
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| 170 | self.blocks[int(line.split(' ')[1][1:])] = block
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| 171 | self._tmpbuff.truncate(0)
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| 172 | self._tmpbuff.seek(0)
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| 173 | self.in_buffer.truncate(0)
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| 174 | self.in_buffer.seek(0)
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| 175 | if not line.endswith('\n'):
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| 176 | self.in_buffer.write(line)
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| 177 |
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| 178 | def getIndex(self) -> int:
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| 179 | # Not every response could be fetched, because of timeout of request.
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| 180 | # Stale responses needs to be cleaned to prevent stack growing.
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| 181 | r = 100 # Remove all messagess older than r
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| 182 | if self.index % r != (self.index + 1) % r:
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| 183 | self.blocks = {k: v for k, v in self.blocks.items() if k > self.index - r}
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| 184 | self.index += 1
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| 185 | return self.index - 1
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