66 lines
1.8 KiB
Python
66 lines
1.8 KiB
Python
import select
|
|
import socket
|
|
|
|
import ujson
|
|
from ipc_unix.utils import read_payload
|
|
|
|
|
|
class Subscriber:
|
|
def __init__(self, socket_path):
|
|
self.socket_path = socket_path
|
|
self.socket = socket.socket(
|
|
socket.AF_UNIX, type=socket.SOCK_STREAM | socket.SOCK_NONBLOCK
|
|
)
|
|
self.socket.connect(self.socket_path)
|
|
|
|
def listen(self):
|
|
while True:
|
|
yield self.get_message()
|
|
|
|
def get_message(self):
|
|
return read_payload(self.socket)
|
|
|
|
def close(self):
|
|
self.socket.close()
|
|
|
|
|
|
class Publisher:
|
|
def __init__(self, socket_path):
|
|
self.socket_path = socket_path
|
|
self.master_socket = socket.socket(
|
|
socket.AF_UNIX, type=socket.SOCK_STREAM | socket.SOCK_NONBLOCK
|
|
)
|
|
self.master_socket.bind(self.socket_path)
|
|
self.master_socket.listen()
|
|
self.connections = []
|
|
|
|
def close(self):
|
|
self.master_socket.close()
|
|
self.connections.clear()
|
|
|
|
def accept_new_connection(self):
|
|
readable, _, _ = select.select([self.master_socket], [], [], 1)
|
|
|
|
if self.master_socket in readable:
|
|
new_socket, _ = self.master_socket.accept()
|
|
self.connections.append(new_socket)
|
|
|
|
def write(self, message):
|
|
self.accept_new_connection()
|
|
|
|
_, writable, errorable = select.select([], self.connections, [], 1)
|
|
|
|
dead_sockets = []
|
|
|
|
if writable:
|
|
data = ujson.dumps(message).encode() + b"\n"
|
|
for sock in writable:
|
|
try:
|
|
sock.send(data)
|
|
except BrokenPipeError:
|
|
dead_sockets.append(sock)
|
|
|
|
for sock in dead_sockets:
|
|
if sock in self.connections:
|
|
self.connections.remove(sock)
|
|
sock.close()
|