def error_handler(data):
"""This function will be called in case of a fatal error in libgis"""
# sys.stderr.write("Error handler was called\n")
# We send an exception that will be handled in
# the parent process, then close the pipe
# and release any possible lock
conn.send(FatalError("G_fatal_error() was called in the server process"))
conn.close()
lock.release()
def safe_receive(self, message):
"""Receive the data and throw a FatalError exception in case the server
process was killed and the pipe was closed by the checker thread"""
try:
ret = self.client_conn.recv()
if isinstance(ret, FatalError):
raise ret
return ret
except (EOFError, IOError, FatalError) as e:
# The pipe was closed by the checker thread because
# the server process was killed
raise FatalError("Exception raised: " + str(e) + " Message: " + message)
def fatal(self, message):
"""Send an error message to stderr, call sys.exit(1) or raise FatalError
:param message: the text of message
:type message: str
This function emulates the behavior of G_fatal_error(). It prints
an error message to stderr and calls sys.exit(1). If raise_on_error
is set True while creating the messenger object, a FatalError
exception will be raised instead of calling sys.exit(1).
"""
self._check_restart_server()
self.client_conn.send(["ERROR", message])
self.stop()
if self.raise_on_error is True:
raise FatalError(message)
else:
sys.exit(1)