diff options
Diffstat (limited to 'lib/bb/asyncrpc/client.py')
| -rw-r--r-- | lib/bb/asyncrpc/client.py | 78 |
1 files changed, 23 insertions, 55 deletions
diff --git a/lib/bb/asyncrpc/client.py b/lib/bb/asyncrpc/client.py index fa042bbe8..7f33099b6 100644 --- a/lib/bb/asyncrpc/client.py +++ b/lib/bb/asyncrpc/client.py @@ -10,13 +10,13 @@ import json import os import socket import sys -from . import chunkify, DEFAULT_MAX_CHUNK +from .connection import StreamConnection, DEFAULT_MAX_CHUNK +from .exceptions import ConnectionClosedError class AsyncClient(object): def __init__(self, proto_name, proto_version, logger, timeout=30): - self.reader = None - self.writer = None + self.socket = None self.max_chunk = DEFAULT_MAX_CHUNK self.proto_name = proto_name self.proto_version = proto_version @@ -25,7 +25,8 @@ class AsyncClient(object): async def connect_tcp(self, address, port): async def connect_sock(): - return await asyncio.open_connection(address, port) + reader, writer = await asyncio.open_connection(address, port) + return StreamConnection(reader, writer, self.timeout, self.max_chunk) self._connect_sock = connect_sock @@ -40,27 +41,27 @@ class AsyncClient(object): sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM, 0) sock.connect(os.path.basename(path)) finally: - os.chdir(cwd) - return await asyncio.open_unix_connection(sock=sock) + os.chdir(cwd) + reader, writer = await asyncio.open_unix_connection(sock=sock) + return StreamConnection(reader, writer, self.timeout, self.max_chunk) self._connect_sock = connect_sock async def setup_connection(self): - s = '%s %s\n\n' % (self.proto_name, self.proto_version) - self.writer.write(s.encode("utf-8")) - await self.writer.drain() + # Send headers + await self.socket.send("%s %s" % (self.proto_name, self.proto_version)) + # End of headers + await self.socket.send("") async def connect(self): - if self.reader is None or self.writer is None: - (self.reader, self.writer) = await self._connect_sock() + if self.socket is None: + self.socket = await self._connect_sock() await self.setup_connection() async def close(self): - self.reader = None - - if self.writer is not None: - self.writer.close() - self.writer = None + if self.socket is not None: + await self.socket.close() + self.socket = None async def _send_wrapper(self, proc): count = 0 @@ -71,6 +72,7 @@ class AsyncClient(object): except ( OSError, ConnectionError, + ConnectionClosedError, json.JSONDecodeError, UnicodeDecodeError, ) as e: @@ -82,49 +84,15 @@ class AsyncClient(object): await self.close() count += 1 - async def send_message(self, msg): - async def get_line(): - try: - line = await asyncio.wait_for(self.reader.readline(), self.timeout) - except asyncio.TimeoutError: - raise ConnectionError("Timed out waiting for server") - - if not line: - raise ConnectionError("Connection closed") - - line = line.decode("utf-8") - - if not line.endswith("\n"): - raise ConnectionError("Bad message %r" % (line)) - - return line - + async def invoke(self, msg): async def proc(): - for c in chunkify(json.dumps(msg), self.max_chunk): - self.writer.write(c.encode("utf-8")) - await self.writer.drain() - - l = await get_line() - - m = json.loads(l) - if m and "chunk-stream" in m: - lines = [] - while True: - l = (await get_line()).rstrip("\n") - if not l: - break - lines.append(l) - - m = json.loads("".join(lines)) - - return m + await self.socket.send_message(msg) + return await self.socket.recv_message() return await self._send_wrapper(proc) async def ping(self): - return await self.send_message( - {'ping': {}} - ) + return await self.invoke({"ping": {}}) class Client(object): @@ -142,7 +110,7 @@ class Client(object): # required (but harmless) with it. asyncio.set_event_loop(self.loop) - self._add_methods('connect_tcp', 'ping') + self._add_methods("connect_tcp", "ping") @abc.abstractmethod def _get_async_client(self): |