def _on_accept(self, conn, addr):
"""Serve acceptted connection.
Should be used in the context of a threaded server, see
threaded_connection(), or fork server (not implemented here).
"""
logging.info('Enter, addr=%s.', addr)
c = Connection(conn)
try:
#
# Instantiate handler for the lifetime of the connection,
# making it possible to manage a state between calls.
#
handler = self._handler_type(addr, self._handler_context)
try:
while True:
data = c.read()
type, name, args, kwargs = loads(data)
# Buffer the call for later processing with self.process
self.inBuf.append((handler, c, type, name, args, kwargs))
except:
logging.debug('Caught end of file, error=%r.',
sys.exc_info()[1])
finally:
c.close()
if 'handler' in locals():
handler._close()
def _dispatch(self, handler, conn, n=1000):
"""Serve single call."""
for i in range(n):
data = conn.read()
type, name, args, kwargs = loads(data)
try:
foo = handler._methods.get(name,
None) or handler._get_method(name)
result = foo(*args, **kwargs)
error = None
except Exception:
logging.debug('Caught exception raised by callable.',
exc_info=True)
# Use exc_info for py2.x py3.x compatibility.
t, v, tb = sys.exc_info()
if t in BUILTIN_EXCEPTIONS:
error = (t.__name__, v.args)
else:
error = (repr(t), v.args)
result = None
if type == CALL:
response = dumps((result, error))
conn.write(response)
def __call__(self, *args, **kwargs):
"""Call method on server."""
data = dumps((CALL, self._name, args, kwargs))
self._conn.write(data)
response = self._conn.read()
value, error = loads(response)
if error is None:
return value
try:
name, args = error
except TypeError:
# Handle old way of returning error as repr.
logging.warning('Unknown error returned by proxy, error=%s.',
error)
raise ServerError(error)
logging.warning('Error returned by proxy, name=%s, args=%s.', name,
args)
# Raise built-in exceptions sent by server.
if name in BUILTIN_EXCEPTIONS_NAMES:
e = getattr(builtins, name)()
e.args = args
raise e # Exception sent from server. Original traceback unavailable.
self._on_exception(name, args)
def _on_accept(self, conn, addr):
"""Serve acceptted connection.
Should be used in the context of a threaded server, see
threaded_connection(), or fork server (not implemented here).
"""
logging.info('Enter, addr=%s.', addr)
c = Connection(conn)
try:
#
# Instantiate handler for the lifetime of the connection,
# making it possible to manage a state between calls.
#
handler = self._handler_type(addr, self._handler_context)
try:
while True:
data = c.read()
type, name, args, kwargs = loads(data)
# Buffer the call for later processing with self.process
self.inBuf.append((handler, c, type, name, args, kwargs))
except:
logging.debug('Caught end of file, error=%r.', sys.exc_info()[1])
finally:
c.close()
if 'handler' in locals():
handler._close()
def _dispatch(self, handler, conn, n=1000):
"""Serve single call."""
for i in range(n):
data = conn.read()
type, name, args, kwargs = loads(data)
try:
foo = handler._methods.get(name, None) or handler._get_method(name)
result = foo(*args, **kwargs)
error = None
except Exception:
logging.debug('Caught exception raised by callable.', exc_info=True)
# Use exc_info for py2.x py3.x compatibility.
t, v, tb = sys.exc_info()
if t in BUILTIN_EXCEPTIONS:
error = (t.__name__, v.args)
else:
error = (repr(t), v.args)
result = None
if type == CALL:
response = dumps((result, error))
conn.write(response)
def __call__(self, *args, **kwargs):
"""Call method on server."""
data = dumps((CALL, self._name, args, kwargs))
self._conn.write(data)
response = self._conn.read()
value, error = loads(response)
if error is None:
return value
try:
name, args = error
except TypeError:
# Handle old way of returning error as repr.
logging.warning('Unknown error returned by proxy, error=%s.', error)
raise ServerError(error)
logging.warning('Error returned by proxy, name=%s, args=%s.', name, args)
# Raise built-in exceptions sent by server.
if name in BUILTIN_EXCEPTIONS_NAMES:
e = getattr(builtins, name)()
e.args = args
raise e # Exception sent from server. Original traceback unavailable.
self._on_exception(name, args)
