<commit_before># vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
#    Licensed under the Apache License, Version 2.0 (the "License"); you may
#    not use this file except in compliance with the License. You may obtain
#    a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#    License for the specific language governing permissions and limitations
#    under the License.

"""
Nova base exception handling, including decorator for re-raising
Nova-type exceptions. SHOULD include dedicated exception logging.
"""

from nova import log as logging
LOG = logging.getLogger('nova.exception')


class ProcessExecutionError(IOError):

    def __init__(self, stdout=None, stderr=None, exit_code=None, cmd=None,
                 description=None):
        if description is None:
            description = _("Unexpected error while running command.")
        if exit_code is None:
            exit_code = '-'
        message = _("%(description)s\nCommand: %(cmd)s\n"
                "Exit code: %(exit_code)s\nStdout: %(stdout)r\n"
                "Stderr: %(stderr)r") % locals()
        IOError.__init__(self, message)


class Error(Exception):

    def __init__(self, message=None):
        super(Error, self).__init__(message)


class ApiError(Error):
    def __init__(self, message='Unknown', code='Unknown'):
        self.message = message
        self.code = code
        super(ApiError, self).__init__('%s: %s' % (code, message))


class NotFound(Error):
    pass


class InstanceNotFound(NotFound):
    def __init__(self, message, instance_id):
        self.instance_id = instance_id
        super(InstanceNotFound, self).__init__(message)


class VolumeNotFound(NotFound):
    def __init__(self, message, volume_id):
        self.volume_id = volume_id
        super(VolumeNotFound, self).__init__(message)


class Duplicate(Error):
    pass


class NotAuthorized(Error):
    pass


class NotEmpty(Error):
    pass


class Invalid(Error):
    pass


class InvalidInputException(Error):
    pass


class InvalidContentType(Error):
    pass


class TimeoutException(Error):
    pass


class DBError(Error):
    """Wraps an implementation specific exception"""
    def __init__(self, inner_exception):
        self.inner_exception = inner_exception
        super(DBError, self).__init__(str(inner_exception))


def wrap_db_error(f):
    def _wrap(*args, **kwargs):
        try:
            return f(*args, **kwargs)
        except Exception, e:
            LOG.exception(_('DB exception wrapped'))
            raise DBError(e)
    return _wrap
    _wrap.func_name = f.func_name


def wrap_exception(f):
    def _wrap(*args, **kw):
        try:
            return f(*args, **kw)
        except Exception, e:
            if not isinstance(e, Error):
                #exc_type, exc_value, exc_traceback = sys.exc_info()
                LOG.exception(_('Uncaught exception'))
                #logging.error(traceback.extract_stack(exc_traceback))
                raise Error(str(e))
            raise
    _wrap.func_name = f.func_name
    return _wrap
<commit_msg>fix for lp712982, and likely a variety of other dashboard error handling  issues.  This fix simply causes the default error code for ApiError to be 'ApiError' rather than 'Unknown', which makes dashboard handle the error gracefully, and makes euca error output slightly prettier<commit_after># vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
#    Licensed under the Apache License, Version 2.0 (the "License"); you may
#    not use this file except in compliance with the License. You may obtain
#    a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#    License for the specific language governing permissions and limitations
#    under the License.

"""
Nova base exception handling, including decorator for re-raising
Nova-type exceptions. SHOULD include dedicated exception logging.
"""

from nova import log as logging
LOG = logging.getLogger('nova.exception')


class ProcessExecutionError(IOError):

    def __init__(self, stdout=None, stderr=None, exit_code=None, cmd=None,
                 description=None):
        if description is None:
            description = _("Unexpected error while running command.")
        if exit_code is None:
            exit_code = '-'
        message = _("%(description)s\nCommand: %(cmd)s\n"
                "Exit code: %(exit_code)s\nStdout: %(stdout)r\n"
                "Stderr: %(stderr)r") % locals()
        IOError.__init__(self, message)


class Error(Exception):

    def __init__(self, message=None):
        super(Error, self).__init__(message)


class ApiError(Error):
    def __init__(self, message='Unknown', code='ApiError'):
        self.message = message
        self.code = code
        super(ApiError, self).__init__('%s: %s' % (code, message))


class NotFound(Error):
    pass


class InstanceNotFound(NotFound):
    def __init__(self, message, instance_id):
        self.instance_id = instance_id
        super(InstanceNotFound, self).__init__(message)


class VolumeNotFound(NotFound):
    def __init__(self, message, volume_id):
        self.volume_id = volume_id
        super(VolumeNotFound, self).__init__(message)


class Duplicate(Error):
    pass


class NotAuthorized(Error):
    pass


class NotEmpty(Error):
    pass


class Invalid(Error):
    pass


class InvalidInputException(Error):
    pass


class InvalidContentType(Error):
    pass


class TimeoutException(Error):
    pass


class DBError(Error):
    """Wraps an implementation specific exception"""
    def __init__(self, inner_exception):
        self.inner_exception = inner_exception
        super(DBError, self).__init__(str(inner_exception))


def wrap_db_error(f):
    def _wrap(*args, **kwargs):
        try:
            return f(*args, **kwargs)
        except Exception, e:
            LOG.exception(_('DB exception wrapped'))
            raise DBError(e)
    return _wrap
    _wrap.func_name = f.func_name


def wrap_exception(f):
    def _wrap(*args, **kw):
        try:
            return f(*args, **kw)
        except Exception, e:
            if not isinstance(e, Error):
                #exc_type, exc_value, exc_traceback = sys.exc_info()
                LOG.exception(_('Uncaught exception'))
                #logging.error(traceback.extract_stack(exc_traceback))
                raise Error(str(e))
            raise
    _wrap.func_name = f.func_name
    return _wrap

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