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# Copyright (c) 2014  Kontron Europe GmbH
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA

from .msgs.constants import COMPLETION_CODE_DESCR, CC_ERR_CMD_SPECIFIC_DESC


class DecodingError(Exception):
    """Error on message decoding."""
    pass


class EncodingError(Exception):
    """Error on message encoding."""
    pass


class IpmiTimeoutError(Exception):
    """Timeout occurred."""
    pass


class CompletionCodeError(Exception):
    """IPMI completion code not OK."""

    def __init__(self, cc, cmdid=None, netfn=None, group_extension=None):
        self.cc = cc
        self.cc_desc = self.find_cc_desc(cc, cmdid, netfn, group_extension)

    def __str__(self):
        return "%s cc=0x%02x desc=%s" \
            % (self.__class__.__name__, self.cc, self.cc_desc)

    @staticmethod
    def find_cc_desc(error_cc, cmdid=None, netfn=None, group_extension=None):
        # Search in global completion codes first
        for cc in COMPLETION_CODE_DESCR:
            if error_cc == cc[0]:
                return cc[1]
        # Then search in command specific completion codes
        if cmdid is not None:
            command_cc = CC_ERR_CMD_SPECIFIC_DESC.get((netfn, cmdid, group_extension), {})
            descr = command_cc.get(error_cc, "Unknown error description")
            return descr
        # Completion code description not found
        return "Unknown error description"


class NotSupportedError(Exception):
    """Not supported yet."""
    pass


class DescriptionError(Exception):
    """Message description incorrect."""
    pass


class RetryError(Exception):
    """Maxium number of retries exceeded."""
    pass


class DataNotFound(Exception):
    """Requested data not found."""
    pass


class HpmError(Exception):
    """HPM.1 error."""
    pass


class IpmiConnectionError(Exception):
    """Connection error."""
    def __init__(self, msg=None):
        self.msg = msg

    def __str__(self):
        return "{}".format(self.msg)

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