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Clarify intentional outages from server linking related things

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Firepup Sixfifty 2024-07-17 02:51:04 +00:00
parent 1714010182
commit 7c0c4b0875
Signed by: Firepup650
SSH key fingerprint: SHA256:U0Zp8EhEe3CMqFSrC79CqatzaEiL4sjta80/RSX2XrY
1 changed files with 173 additions and 156 deletions
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31
server.py
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@ -1,17 +1,19 @@
#! /usr/bin/python3 #!/usr/bin/python3
import os, sys, asyncio, re, signal import os, sys, asyncio, re, signal
from platform import uname from platform import uname
from traceback import format_exc from traceback import format_exc
from logs import log from logs import log
class LinksDownException(Exception): ... class LinkDownError(Exception): ...
class FailedLinkError(Exception): ...
class Globals: ... class Globals: ...
# The two below lines are a hacky fix for python 3.10 asyncio
TimeoutErrors = (TimeoutError, asyncio.exceptions.TimeoutError) TimeoutErrors = (TimeoutError, asyncio.exceptions.TimeoutError)
DisconnectErrors = (ConnectionResetError, BrokenPipeError, IndexError, *TimeoutErrors) DisconnectErrors = (ConnectionResetError, BrokenPipeError, IndexError, *TimeoutErrors)
G = Globals() G = Globals()
@ -401,6 +403,7 @@ Please note that this is not network level statistics.\n""".encode(
async def connectServer(hostname: str, port: int): async def connectServer(hostname: str, port: int):
global G global G
try:
reader, writer = await asyncio.open_connection(hostname, port) reader, writer = await asyncio.open_connection(hostname, port)
await reader.read(1024) await reader.read(1024)
writer.write(f"S2S-{G.remoteID}\n".encode("utf8")) writer.write(f"S2S-{G.remoteID}\n".encode("utf8"))
@ -474,7 +477,9 @@ async def connectServer(hostname: str, port: int):
case "-": case "-":
cName = buffer[2:] cName = buffer[2:]
if G.clientsConnected.get(cName.lower(), None) == rID: if G.clientsConnected.get(cName.lower(), None) == rID:
G.msgs.append(log(f"{cName} has disconnected from {rID}")) G.msgs.append(
log(f"{cName} has disconnected from {rID}")
)
del G.servers[rID][cName.lower()] del G.servers[rID][cName.lower()]
del G.clientsConnected[cName.lower()] del G.clientsConnected[cName.lower()]
G.S2SLogs.append(("-", cName, rID)) G.S2SLogs.append(("-", cName, rID))
@ -515,7 +520,10 @@ async def connectServer(hostname: str, port: int):
"utf8" "utf8"
) )
) )
log(f"Recieved invalid message ({buffer}) from {sName}", "WARN") log(
f"Recieved invalid message ({buffer}) from {sName}",
"WARN",
)
await writer.drain() await writer.drain()
except TimeoutErrors: except TimeoutErrors:
pass pass
@ -544,7 +552,7 @@ async def connectServer(hostname: str, port: int):
await writer.drain() await writer.drain()
msgInd += 1 msgInd += 1
if G.cwlgd: if G.cwlgd:
raise LinksDownException raise LinkDownError
await writer.drain() await writer.drain()
writer.close() writer.close()
await writer.wait_closed() await writer.wait_closed()
@ -555,7 +563,7 @@ async def connectServer(hostname: str, port: int):
G.msgs.append(log(f"{rID} has de-linked from the network")) G.msgs.append(log(f"{rID} has de-linked from the network"))
except DisconnectErrors: except DisconnectErrors:
if G.cwlgd: if G.cwlgd:
raise LinksDownException raise LinkDownError
for cName in G.servers[rID]: for cName in G.servers[rID]:
G.msgs.append(log(f"{cName}'s server is going down")) G.msgs.append(log(f"{cName}'s server is going down"))
try: try:
@ -564,6 +572,10 @@ async def connectServer(hostname: str, port: int):
pass pass
del G.servers[rID] del G.servers[rID]
G.msgs.append(log(f"{rID} has de-linked from the network")) G.msgs.append(log(f"{rID} has de-linked from the network"))
except OSError as E:
log("OSError: " + str(E), "ERROR")
if G.cwlgd:
raise FailedLinkError
async def runServer(address: str, port: int): async def runServer(address: str, port: int):
@ -578,6 +590,11 @@ async def runServer(address: str, port: int):
try: try:
links.append(G.event.wait()) links.append(G.event.wait())
await asyncio.gather(*links) await asyncio.gather(*links)
except LinkDownError:
G.msgs.append(log("Lost a server link, going down", "FATAL")[1:])
crash = True
except FailedLinkError:
G.msgs.append(log("Failed to establish a server link, going down", "FATAL")[1:])
except Exception: except Exception:
crash = True crash = True
G.msgs.append(log("Server crash", "FATAL")[1:]) G.msgs.append(log("Server crash", "FATAL")[1:])