feat(deltachat-rpc-client): log exceptions when long-running tasks die

For example, reader_loop() may die
if readline() tries to read too large line
and thows an exception.
We want to at least log the exception in this case.

deltachat-rpc-client/src/deltachat_rpc_client/rpc.py

@@ -1,5 +1,6 @@
 import asyncio
 import json
+import logging
 import os
 from typing import Any, Dict, Optional
 
@@ -57,6 +58,7 @@ class Rpc:
         await self.close()
 
     async def reader_loop(self) -> None:
+        try:
             while True:
                 line = await self.process.stdout.readline()  # noqa
                 if not line:  # EOF
@@ -67,6 +69,9 @@ class Rpc:
                     fut.set_result(response)
                 else:
                     print(response)
+        except Exception:
+            # Log an exception if the reader loop dies.
+            logging.exception("Exception in the reader loop")
 
     async def get_queue(self, account_id: int) -> asyncio.Queue:
         if account_id not in self.event_queues:
@@ -75,6 +80,7 @@ class Rpc:
 
     async def events_loop(self) -> None:
         """Requests new events and distributes them between queues."""
+        try:
             while True:
                 if self.closing:
                     return
@@ -82,6 +88,9 @@ class Rpc:
                 account_id = event["contextId"]
                 queue = await self.get_queue(account_id)
                 await queue.put(event["event"])
+        except Exception:
+            # Log an exception if the event loop dies.
+            logging.exception("Exception in the event loop")
 
     async def wait_for_event(self, account_id: int) -> Optional[dict]:
         """Waits for the next event from the given account and returns it."""