# Path: pyisis/lib/util.py
# def debug_exception ():
#     if debug_exception.entered:
#         return
#     debug_exception.entered = True
#     traceback.print_exc()
#     pdb.set_trace()
# 
# Path: pyisis/lib/util.py
# def stringify3 (b):
#     if type(b) == memoryview:
#         return b.tobytes()
#     else:
#         return str(buffer(b))                           # pylint: disable=E0602
# 
# def tlvrdb (val):
#     # In python3 byte strings return integers when indexed
#     return val
# 
# Path: pyisis/lib/cksum.py
# def iso_cksum (mess, ckoff=None):
#     # RFC1008 calls this k and points to the 2nd byte (calling it the first)
#     # so ckoff = k -1, our ckoff points at the actual first byte of the chksum
#     # or None if not required.
# 
#     p3 = len(mess)
# 
#     # We can't modify the data so we look for it later while iterating
#     # if k > 0:
#     #     mess[k - 1] = 0
#     #     mess[k] = 0
#     c0 = 0
#     c1 = 0
#     p1 = 0
# 
#     # Outer sum accumulation loop
#     while p1 < p3:
#         p2 = p1 + MODX
#         if p2 > p3:
#             p2 = p3
# 
#         # Inner sum accumulation loop
#         for p in xrange3(p1, p2):
#             # if these are the cksum bytes skip addition (treat as zero)
#             if not ckoff or (p != ckoff and p != (ckoff + 1)):
#                 c0 = c0 + ord3(mess[p])
#             c1 = c1 + c0
# 
#         # Adjust accumulated sums to mod 255
#         c0 = c0 % 255
#         c1 = c1 % 255
#         p1 = p2
# 
#     # concatenate c1 and c0
#     ip = ((c1 & 0xFF) << 8) + (c0 & 0xFF)
#     if ckoff is None:
#         return ip
# 
#     # iq = ((mlen - k) * c0 - c1) % 255
#     iq = ((p3 - (ckoff + 1)) * c0 - c1) % 255
#     if iq <= 0:
#         iq = iq + 255
#     # mess[ckoff] = chr(iq)     # Can't modify data
# 
#     ir = (510 - c0 - iq)
#     if ir > 255:
#         ir = ir - 255
#     # mess[ckoff + 1] = chr(ir)         # Can't modify data
# 
#     # Return in host order
#     return ((iq & 0xFF) << 8) | (ir & 0xFF)


from pyisis.lib.util import debug_exception
from ctypes import sizeof
from pyisis.lib.util import stringify3, tlvrdb
from pyisis.lib.cksum import iso_cksum
import logbook
import threading
import pyisis.clns as clns
import pyisis.lsp as lsp
import pyisis.pdu as pdu
import pyisis.lib.timers as timers
import pyisis.tlv as tlv
import pyisis.lib.util as util
                import pdb
# Copyright (c) 2014 by Christian E. Hopps.
# 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.
#
from __future__ import absolute_import, division, nested_scopes, print_function, unicode_literals
# from pyisis.lib.util import buffer3

# import rbtree
# import pyisis.lib.debug as debug

logger = logbook.Logger(__name__)

OLDER = -1
SAME = 0
NEWER = 1


class UpdateProcess (object):
    def __init__ (self, inst, lindex):

# Path: pyisis/lib/util.py
# def debug_exception ():
#     if debug_exception.entered:
#         return
#     debug_exception.entered = True
#     traceback.print_exc()
#     pdb.set_trace()
# 
# Path: pyisis/lib/util.py
# def stringify3 (b):
#     if type(b) == memoryview:
#         return b.tobytes()
#     else:
#         return str(buffer(b))                           # pylint: disable=E0602
# 
# def tlvrdb (val):
#     # In python3 byte strings return integers when indexed
#     return val
# 
# Path: pyisis/lib/cksum.py
# def iso_cksum (mess, ckoff=None):
#     # RFC1008 calls this k and points to the 2nd byte (calling it the first)
#     # so ckoff = k -1, our ckoff points at the actual first byte of the chksum
#     # or None if not required.
# 
#     p3 = len(mess)
# 
#     # We can't modify the data so we look for it later while iterating
#     # if k > 0:
#     #     mess[k - 1] = 0
#     #     mess[k] = 0
#     c0 = 0
#     c1 = 0
#     p1 = 0
# 
#     # Outer sum accumulation loop
#     while p1 < p3:
#         p2 = p1 + MODX
#         if p2 > p3:
#             p2 = p3
# 
#         # Inner sum accumulation loop
#         for p in xrange3(p1, p2):
#             # if these are the cksum bytes skip addition (treat as zero)
#             if not ckoff or (p != ckoff and p != (ckoff + 1)):
#                 c0 = c0 + ord3(mess[p])
#             c1 = c1 + c0
# 
#         # Adjust accumulated sums to mod 255
#         c0 = c0 % 255
#         c1 = c1 % 255
#         p1 = p2
# 
#     # concatenate c1 and c0
#     ip = ((c1 & 0xFF) << 8) + (c0 & 0xFF)
#     if ckoff is None:
#         return ip
# 
#     # iq = ((mlen - k) * c0 - c1) % 255
#     iq = ((p3 - (ckoff + 1)) * c0 - c1) % 255
#     if iq <= 0:
#         iq = iq + 255
#     # mess[ckoff] = chr(iq)     # Can't modify data
# 
#     ir = (510 - c0 - iq)
#     if ir > 255:
#         ir = ir - 255
#     # mess[ckoff + 1] = chr(ir)         # Can't modify data
# 
#     # Return in host order
#     return ((iq & 0xFF) << 8) | (ir & 0xFF)


# Path: pyisis/update.py
from pyisis.lib.util import debug_exception
from ctypes import sizeof
from pyisis.lib.util import stringify3, tlvrdb
from pyisis.lib.cksum import iso_cksum
import logbook
import threading
import pyisis.clns as clns
import pyisis.lsp as lsp
import pyisis.pdu as pdu
import pyisis.lib.timers as timers
import pyisis.tlv as tlv
import pyisis.lib.util as util
                import pdb

# Copyright (c) 2014 by Christian E. Hopps.
# 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.
#
from __future__ import absolute_import, division, nested_scopes, print_function, unicode_literals
# from pyisis.lib.util import buffer3

# import rbtree
# import pyisis.lib.debug as debug

logger = logbook.Logger(__name__)

OLDER = -1
SAME = 0
NEWER = 1


class UpdateProcess (object):
    def __init__ (self, inst, lindex):

        self.inst = inst