py-libp2p/tests_interop/daemon.py
mhchia 006002f687
Move interop tests out of tests
It is moved to the top level package `tests_interop`, to avoid circular
dependency, with the dependency moved to `tox`.
2019-09-23 22:00:40 +08:00

201 lines
6.4 KiB
Python

import asyncio
import time
from typing import Any, List
import multiaddr
from multiaddr import Multiaddr
from p2pclient import Client
from libp2p.peer.id import ID
from libp2p.peer.peerinfo import PeerInfo, info_from_p2p_addr
from .constants import LOCALHOST_IP
from .envs import GO_BIN_PATH
P2PD_PATH = GO_BIN_PATH / "p2pd"
TIMEOUT_DURATION = 30
async def try_until_success(coro_func, timeout=TIMEOUT_DURATION):
"""
Keep running ``coro_func`` until either it succeed or time is up.
All arguments of ``coro_func`` should be filled, i.e. it should be called without arguments.
"""
t_start = time.monotonic()
while True:
result = await coro_func()
if result:
break
if (time.monotonic() - t_start) >= timeout:
# timeout
assert False, f"{coro_func} is still failing after `{timeout}` seconds"
await asyncio.sleep(0.01)
class P2PDProcess:
proc: asyncio.subprocess.Process
cmd: str = str(P2PD_PATH)
args: List[Any]
is_proc_running: bool
_tasks: List["asyncio.Future[Any]"]
def __init__(
self,
control_maddr: Multiaddr,
is_secure: bool,
is_pubsub_enabled: bool = True,
is_gossipsub: bool = True,
is_pubsub_signing: bool = False,
is_pubsub_signing_strict: bool = False,
) -> None:
args = [f"-listen={str(control_maddr)}"]
# NOTE: To support `-insecure`, we need to hack `go-libp2p-daemon`.
if not is_secure:
args.append("-insecure=true")
if is_pubsub_enabled:
args.append("-pubsub")
if is_gossipsub:
args.append("-pubsubRouter=gossipsub")
else:
args.append("-pubsubRouter=floodsub")
if not is_pubsub_signing:
args.append("-pubsubSign=false")
if not is_pubsub_signing_strict:
args.append("-pubsubSignStrict=false")
# NOTE:
# Two other params are possibly what we want to configure:
# - gossipsubHeartbeatInterval: GossipSubHeartbeatInitialDelay = 100 * time.Millisecond # noqa: E501
# - gossipsubHeartbeatInitialDelay: GossipSubHeartbeatInterval = 1 * time.Second
# Referece: https://github.com/libp2p/go-libp2p-daemon/blob/b95e77dbfcd186ccf817f51e95f73f9fd5982600/p2pd/main.go#L348-L353 # noqa: E501
self.args = args
self.is_proc_running = False
self._tasks = []
async def wait_until_ready(self):
lines_head_pattern = (b"Control socket:", b"Peer ID:", b"Peer Addrs:")
lines_head_occurred = {line: False for line in lines_head_pattern}
async def read_from_daemon_and_check():
line = await self.proc.stdout.readline()
for head_pattern in lines_head_occurred:
if line.startswith(head_pattern):
lines_head_occurred[head_pattern] = True
return all([value for value in lines_head_occurred.values()])
await try_until_success(read_from_daemon_and_check)
# Sleep a little bit to ensure the listener is up after logs are emitted.
await asyncio.sleep(0.01)
async def start_printing_logs(self) -> None:
async def _print_from_stream(
src_name: str, reader: asyncio.StreamReader
) -> None:
while True:
line = await reader.readline()
if line != b"":
print(f"{src_name}\t: {line.rstrip().decode()}")
await asyncio.sleep(0.01)
self._tasks.append(
asyncio.ensure_future(_print_from_stream("out", self.proc.stdout))
)
self._tasks.append(
asyncio.ensure_future(_print_from_stream("err", self.proc.stderr))
)
await asyncio.sleep(0)
async def start(self) -> None:
if self.is_proc_running:
return
self.proc = await asyncio.subprocess.create_subprocess_exec(
self.cmd,
*self.args,
stdout=asyncio.subprocess.PIPE,
stderr=asyncio.subprocess.PIPE,
bufsize=0,
)
self.is_proc_running = True
await self.wait_until_ready()
await self.start_printing_logs()
async def close(self) -> None:
if self.is_proc_running:
self.proc.terminate()
await self.proc.wait()
self.is_proc_running = False
for task in self._tasks:
task.cancel()
class Daemon:
p2pd_proc: P2PDProcess
control: Client
peer_info: PeerInfo
def __init__(
self, p2pd_proc: P2PDProcess, control: Client, peer_info: PeerInfo
) -> None:
self.p2pd_proc = p2pd_proc
self.control = control
self.peer_info = peer_info
def __repr__(self) -> str:
return f"<Daemon {self.peer_id.to_string()[2:8]}>"
@property
def peer_id(self) -> ID:
return self.peer_info.peer_id
@property
def listen_maddr(self) -> Multiaddr:
return self.peer_info.addrs[0]
async def close(self) -> None:
await self.p2pd_proc.close()
await self.control.close()
async def make_p2pd(
daemon_control_port: int,
client_callback_port: int,
is_secure: bool,
is_pubsub_enabled=True,
is_gossipsub=True,
is_pubsub_signing=False,
is_pubsub_signing_strict=False,
) -> Daemon:
control_maddr = Multiaddr(f"/ip4/{LOCALHOST_IP}/tcp/{daemon_control_port}")
p2pd_proc = P2PDProcess(
control_maddr,
is_secure,
is_pubsub_enabled,
is_gossipsub,
is_pubsub_signing,
is_pubsub_signing_strict,
)
await p2pd_proc.start()
client_callback_maddr = Multiaddr(f"/ip4/{LOCALHOST_IP}/tcp/{client_callback_port}")
p2pc = Client(control_maddr, client_callback_maddr)
await p2pc.listen()
peer_id, maddrs = await p2pc.identify()
listen_maddr: Multiaddr = None
for maddr in maddrs:
try:
ip = maddr.value_for_protocol(multiaddr.protocols.P_IP4)
# NOTE: Check if this `maddr` uses `tcp`.
maddr.value_for_protocol(multiaddr.protocols.P_TCP)
except multiaddr.exceptions.ProtocolLookupError:
continue
if ip == LOCALHOST_IP:
listen_maddr = maddr
break
assert listen_maddr is not None, "no loopback maddr is found"
peer_info = info_from_p2p_addr(
listen_maddr.encapsulate(Multiaddr(f"/p2p/{peer_id.to_string()}"))
)
return Daemon(p2pd_proc, p2pc, peer_info)