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Modified recv_task(): added functionality to restart ws after timeout, modified match msg and added new case to match in case of receiving an error.

dark_clearing_improvements
Esmeralda Gallardo 2022-10-27 15:05:41 -03:00
parent 3f5dec82ed
commit a6e921548b
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GPG Key ID: AD67FBB417CAC71B
1 changed files with 43 additions and 23 deletions
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66
piker/data/_web_bs.py
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@ -23,6 +23,7 @@ from itertools import count
from types import ModuleType
from typing import Any, Optional, Callable, AsyncGenerator
import json
import sys
import trio
import trio_websocket
@ -139,7 +140,7 @@ class NoBsWs:
async def open_autorecon_ws(
url: str,
# TODO: proper type annot smh
# TODO: proper type cannot smh
fixture: Optional[Callable] = None,
) -> AsyncGenerator[tuple[...], NoBsWs]:
@ -169,14 +170,17 @@ class JSONRPCResult(Struct):
result: Optional[dict] = None
error: Optional[dict] = None
@asynccontextmanager
async def open_jsonrpc_session(
url: str,
start_id: int = 0,
response_type: type = JSONRPCResult,
request_type: Optional[type] = None,
request_hook: Optional[Callable] = None
request_hook: Optional[Callable] = None,
error_hook: Optional[Callable] = None,
timeout: int = 5,
timeout_hook: Optional[Callable] = None,
timeout_args: list = [],
) -> Callable[[str, dict], dict]:
async with (
@ -221,33 +225,49 @@ async def open_jsonrpc_session(
'''
receives every ws message and stores it in its corresponding result
field, then sets the event to wakeup original sender tasks.
also, recieves responses to requests originated from the server side.
also recieves responses to requests originated from the server side.
reconnects the tasks after timeout.
'''
async for msg in ws:
match msg:
case {
'result': _
}:
msg = response_type(**msg)
with trio.move_on_after(timeout) as cancel_scope:
async for msg in ws:
match msg:
case {
'result': result,
'id': mid,
} if res_entry := rpc_results.get(mid):
if msg.id not in rpc_results:
res_entry['result'] = response_type(**msg)
res_entry['event'].set()
case {
'result': _,
'id': mid,
} if not rpc_results.get(mid):
log.warning(f'Wasn\'t expecting ws msg: {json.dumps(msg, indent=4)}')
res = rpc_results.setdefault(
msg.id,
{'result': None, 'event': trio.Event()}
)
case {
'method': _,
'params': _,
}:
log.debug(f'Recieved\n{msg}')
if request_hook:
await request_hook(request_type(**msg))
res['result'] = msg
res['event'].set()
case {
'error': error
}:
log.warning(f'Recieved\n{error}')
if error_hook:
await error_hook(response_type(**msg))
case {
'method': _,
'params': _
}:
case _:
log.warning(f'Unhandled JSON-RPC msg!?\n{msg}')
if request_hook:
await request_hook(request_type(**msg))
if cancel_scope.cancelled_caught:
await ws._connect()
n.start_soon(recv_task)
if timeout_hook:
n.start_soon(timeout_hook, json_rpc, *timeout_args)
n.start_soon(recv_task)