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asyncio, Tulip issue 139: Improve error messages on "fatal errors"

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Mention if the error was caused by a read or a write, and be more specific on
the object (ex: "pipe transport" instead of "transport").
This commit is contained in:
Victor Stinner 2014-02-19 01:40:41 +01:00
parent c098241342
commit 065ca25aae
6 changed files with 64 additions and 38 deletions
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22
Lib/asyncio/selector_events.py
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@ -377,11 +377,11 @@ def close(self):
self._conn_lost += 1
self._loop.call_soon(self._call_connection_lost, None)
def _fatal_error(self, exc):
def _fatal_error(self, exc, message='Fatal error on transport'):
# Should be called from exception handler only.
if not isinstance(exc, (BrokenPipeError, ConnectionResetError)):
self._loop.call_exception_handler({
'message': 'Fatal transport error',
'message': message,
'exception': exc,
'transport': self,
'protocol': self._protocol,
@ -452,7 +452,7 @@ def _read_ready(self):
except (BlockingIOError, InterruptedError):
pass
except Exception as exc:
self._fatal_error(exc)
self._fatal_error(exc, 'Fatal read error on socket transport')
else:
if data:
self._protocol.data_received(data)
@ -488,7 +488,7 @@ def write(self, data):
except (BlockingIOError, InterruptedError):
pass
except Exception as exc:
self._fatal_error(exc)
self._fatal_error(exc, 'Fatal write error on socket transport')
return
else:
data = data[n:]
@ -511,7 +511,7 @@ def _write_ready(self):
except Exception as exc:
self._loop.remove_writer(self._sock_fd)
self._buffer.clear()
self._fatal_error(exc)
self._fatal_error(exc, 'Fatal write error on socket transport')
else:
if n:
del self._buffer[:n]
@ -678,7 +678,7 @@ def _read_ready(self):
self._loop.remove_reader(self._sock_fd)
self._loop.add_writer(self._sock_fd, self._write_ready)
except Exception as exc:
self._fatal_error(exc)
self._fatal_error(exc, 'Fatal read error on SSL transport')
else:
if data:
self._protocol.data_received(data)
@ -712,7 +712,7 @@ def _write_ready(self):
except Exception as exc:
self._loop.remove_writer(self._sock_fd)
self._buffer.clear()
self._fatal_error(exc)
self._fatal_error(exc, 'Fatal write error on SSL transport')
return
if n:
@ -770,7 +770,7 @@ def _read_ready(self):
except OSError as exc:
self._protocol.error_received(exc)
except Exception as exc:
self._fatal_error(exc)
self._fatal_error(exc, 'Fatal read error on datagram transport')
else:
self._protocol.datagram_received(data, addr)
@ -805,7 +805,8 @@ def sendto(self, data, addr=None):
self._protocol.error_received(exc)
return
except Exception as exc:
self._fatal_error(exc)
self._fatal_error(exc,
'Fatal write error on datagram transport')
return
# Ensure that what we buffer is immutable.
@ -827,7 +828,8 @@ def _sendto_ready(self):
self._protocol.error_received(exc)
return
except Exception as exc:
self._fatal_error(exc)
self._fatal_error(exc,
'Fatal write error on datagram transport')
return
self._maybe_resume_protocol() # May append to buffer.