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#!/usr/bin/env python
#
# Copyright CEA/DAM/DIF (2010, 2011, 2012)
# Contributor: Stephane THIELL <stephane.thiell@cea.fr>
#
# This file is part of the ClusterShell library.
#
# This software is governed by the CeCILL-C license under French law and
# abiding by the rules of distribution of free software. You can use,
# modify and/ or redistribute the software under the terms of the CeCILL-C
# license as circulated by CEA, CNRS and INRIA at the following URL
# "http://www.cecill.info".
#
# As a counterpart to the access to the source code and rights to copy,
# modify and redistribute granted by the license, users are provided only
# with a limited warranty and the software's author, the holder of the
# economic rights, and the successive licensors have only limited
# liability.
#
# In this respect, the user's attention is drawn to the risks associated
# with loading, using, modifying and/or developing or reproducing the
# software by the user in light of its specific status of free software,
# that may mean that it is complicated to manipulate, and that also
# therefore means that it is reserved for developers and experienced
# professionals having in-depth computer knowledge. Users are therefore
# encouraged to load and test the software's suitability as regards their
# requirements in conditions enabling the security of their systems and/or
# data to be ensured and, more generally, to use and operate it in the
# same conditions as regards security.
#
# The fact that you are presently reading this means that you have had
# knowledge of the CeCILL-C license and that you accept its terms.
"""
CLI error handling helper functions
"""
import os.path
import signal
import sys
from ClusterShell.Engine.Engine import EngineNotSupportedError
from ClusterShell.CLI.Utils import GroupResolverConfigError # dummy but safe
from ClusterShell.NodeUtils import GroupResolverSourceError
from ClusterShell.NodeUtils import GroupSourceException
from ClusterShell.NodeUtils import GroupSourceNoUpcall
from ClusterShell.NodeSet import NodeSetExternalError, NodeSetParseError
from ClusterShell.NodeSet import RangeSetParseError
from ClusterShell.Topology import TopologyError
GENERIC_ERRORS = (EngineNotSupportedError,
NodeSetExternalError,
NodeSetParseError,
RangeSetParseError,
GroupResolverSourceError,
GroupSourceNoUpcall,
GroupSourceException,
TopologyError,
IOError,
KeyboardInterrupt)
def handle_generic_error(excobj, prog=os.path.basename(sys.argv[0])):
"""handle error given `excobj' generic script exception"""
try:
raise excobj
except EngineNotSupportedError, exc:
print >> sys.stderr, "%s: I/O events engine '%s' not supported on " \
"this host" % (prog, exc.engineid)
except NodeSetExternalError, exc:
print >> sys.stderr, "%s: External error:" % prog, exc
except (NodeSetParseError, RangeSetParseError), exc:
print >> sys.stderr, "%s: Parse error:" % prog, exc
except GroupResolverSourceError, exc:
print >> sys.stderr, "%s: Unknown group source: \"%s\"" % (prog, exc)
except GroupSourceNoUpcall, exc:
print >> sys.stderr, "%s: No %s upcall defined for group " \
"source \"%s\"" % (prog, exc, exc.group_source.name)
except GroupSourceException, exc:
print >> sys.stderr, "%s: Other group error:" % prog, exc
except TopologyError, exc:
print >> sys.stderr, "%s: TREE MODE:" % prog, exc
except IOError:
# ignore broken pipe
pass
except KeyboardInterrupt, exc:
return 128 + signal.SIGINT
except:
assert False, "wrong GENERIC_ERRORS"
# Exit with error code 1 (generic failure)
return 1
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