# -*- coding: utf-8 -*-
from operator import attrgetter
from pyangbind.lib.yangtypes import RestrictedPrecisionDecimalType
from pyangbind.lib.yangtypes import RestrictedClassType
from pyangbind.lib.yangtypes import TypedListType
from pyangbind.lib.yangtypes import YANGBool
from pyangbind.lib.yangtypes import YANGListType
from pyangbind.lib.yangtypes import YANGDynClass
from pyangbind.lib.yangtypes import ReferenceType
from pyangbind.lib.yangtypes import YANGBinary
from pyangbind.lib.yangtypes import YANGBitsType
from pyangbind.lib.base import PybindBase
from collections import OrderedDict
from decimal import Decimal
import six

# PY3 support of some PY2 keywords (needs improved)
if six.PY3:
  import builtins as __builtin__
  long = int
elif six.PY2:
  import __builtin__

from . import path_element
class backup_path(PybindBase):
  """
  This class was auto-generated by the PythonClass plugin for PYANG
  from YANG module ietf-network - based on the path /networks/network/link/te/te-link-attributes/underlay/backup-path. Each member element of
  the container is represented as a class variable - with a specific
  YANG type.

  YANG Description: A list of backup service paths on the underlay topology that
protect the underlay primary path.  If the primary path is
not protected, the list contains zero elements.  If the
primary path is protected, the list contains one or more
elements.
  """
  __slots__ = ('_path_helper', '_extmethods', '__index','__network_ref','__path_element',)

  _yang_name = 'backup-path'
  _yang_namespace = 'urn:ietf:params:xml:ns:yang:ietf-network'

  _pybind_generated_by = 'container'

  def __init__(self, *args, **kwargs):

    self._path_helper = False

    self._extmethods = False
    self.__index = YANGDynClass(base=RestrictedClassType(base_type=long, restriction_dict={'range': ['0..4294967295']}, int_size=32), is_leaf=True, yang_name="index", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, is_keyval=True, namespace='urn:ietf:params:xml:ns:yang:ietf-te-topology', defining_module='ietf-te-topology', yang_type='uint32', is_config=True)
    self.__network_ref = YANGDynClass(base=six.text_type, is_leaf=True, yang_name="network-ref", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, namespace='urn:ietf:params:xml:ns:yang:ietf-te-topology', defining_module='ietf-te-topology', yang_type='leafref', is_config=True)
    self.__path_element = YANGDynClass(base=YANGListType("path_element_id",path_element.path_element, yang_name="path-element", parent=self, is_container='list', user_ordered=False, path_helper=self._path_helper, yang_keys='path-element-id', extensions=None), is_container='list', yang_name="path-element", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, extensions=None, namespace='urn:ietf:params:xml:ns:yang:ietf-te-topology', defining_module='ietf-te-topology', yang_type='list', is_config=True)

    load = kwargs.pop("load", None)
    if args:
      if len(args) > 1:
        raise TypeError("cannot create a YANG container with >1 argument")
      all_attr = True
      for e in self._pyangbind_elements:
        if not hasattr(args[0], e):
          all_attr = False
          break
      if not all_attr:
        raise ValueError("Supplied object did not have the correct attributes")
      for e in self._pyangbind_elements:
        nobj = getattr(args[0], e)
        if nobj._changed() is False:
          continue
        setmethod = getattr(self, "_set_%s" % e)
        if load is None:
          setmethod(getattr(args[0], e))
        else:
          setmethod(getattr(args[0], e), load=load)

  def _path(self):
    if hasattr(self, "_parent"):
      return self._parent._path()+[self._yang_name]
    else:
      return ['networks', 'network', 'link', 'te', 'te-link-attributes', 'underlay', 'backup-path']

  def _get_index(self):
    """
    Getter method for index, mapped from YANG variable /networks/network/link/te/te_link_attributes/underlay/backup_path/index (uint32)

    YANG Description: A sequence number to identify a backup path.
    """
    return self.__index
      
  def _set_index(self, v, load=False):
    """
    Setter method for index, mapped from YANG variable /networks/network/link/te/te_link_attributes/underlay/backup_path/index (uint32)
    If this variable is read-only (config: false) in the
    source YANG file, then _set_index is considered as a private
    method. Backends looking to populate this variable should
    do so via calling thisObj._set_index() directly.

    YANG Description: A sequence number to identify a backup path.
    """
    parent = getattr(self, "_parent", None)
    if parent is not None and load is False:
      raise AttributeError("Cannot set keys directly when" +
                             " within an instantiated list")

    if hasattr(v, "_utype"):
      v = v._utype(v)
    try:
      t = YANGDynClass(v,base=RestrictedClassType(base_type=long, restriction_dict={'range': ['0..4294967295']}, int_size=32), is_leaf=True, yang_name="index", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, is_keyval=True, namespace='urn:ietf:params:xml:ns:yang:ietf-te-topology', defining_module='ietf-te-topology', yang_type='uint32', is_config=True)
    except (TypeError, ValueError):
      raise ValueError({
          'error-string': """index must be of a type compatible with uint32""",
          'defined-type': "uint32",
          'generated-type': """YANGDynClass(base=RestrictedClassType(base_type=long, restriction_dict={'range': ['0..4294967295']}, int_size=32), is_leaf=True, yang_name="index", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, is_keyval=True, namespace='urn:ietf:params:xml:ns:yang:ietf-te-topology', defining_module='ietf-te-topology', yang_type='uint32', is_config=True)""",
        })

    self.__index = t
    if hasattr(self, '_set'):
      self._set()

  def _unset_index(self):
    self.__index = YANGDynClass(base=RestrictedClassType(base_type=long, restriction_dict={'range': ['0..4294967295']}, int_size=32), is_leaf=True, yang_name="index", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, is_keyval=True, namespace='urn:ietf:params:xml:ns:yang:ietf-te-topology', defining_module='ietf-te-topology', yang_type='uint32', is_config=True)


  def _get_network_ref(self):
    """
    Getter method for network_ref, mapped from YANG variable /networks/network/link/te/te_link_attributes/underlay/backup_path/network_ref (leafref)

    YANG Description: Used to reference a network -- for example, an underlay
network.
    """
    return self.__network_ref
      
  def _set_network_ref(self, v, load=False):
    """
    Setter method for network_ref, mapped from YANG variable /networks/network/link/te/te_link_attributes/underlay/backup_path/network_ref (leafref)
    If this variable is read-only (config: false) in the
    source YANG file, then _set_network_ref is considered as a private
    method. Backends looking to populate this variable should
    do so via calling thisObj._set_network_ref() directly.

    YANG Description: Used to reference a network -- for example, an underlay
network.
    """
    if hasattr(v, "_utype"):
      v = v._utype(v)
    try:
      t = YANGDynClass(v,base=six.text_type, is_leaf=True, yang_name="network-ref", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, namespace='urn:ietf:params:xml:ns:yang:ietf-te-topology', defining_module='ietf-te-topology', yang_type='leafref', is_config=True)
    except (TypeError, ValueError):
      raise ValueError({
          'error-string': """network_ref must be of a type compatible with leafref""",
          'defined-type': "leafref",
          'generated-type': """YANGDynClass(base=six.text_type, is_leaf=True, yang_name="network-ref", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, namespace='urn:ietf:params:xml:ns:yang:ietf-te-topology', defining_module='ietf-te-topology', yang_type='leafref', is_config=True)""",
        })

    self.__network_ref = t
    if hasattr(self, '_set'):
      self._set()

  def _unset_network_ref(self):
    self.__network_ref = YANGDynClass(base=six.text_type, is_leaf=True, yang_name="network-ref", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, namespace='urn:ietf:params:xml:ns:yang:ietf-te-topology', defining_module='ietf-te-topology', yang_type='leafref', is_config=True)


  def _get_path_element(self):
    """
    Getter method for path_element, mapped from YANG variable /networks/network/link/te/te_link_attributes/underlay/backup_path/path_element (list)

    YANG Description: A list of path elements describing the backup service
path.
    """
    return self.__path_element
      
  def _set_path_element(self, v, load=False):
    """
    Setter method for path_element, mapped from YANG variable /networks/network/link/te/te_link_attributes/underlay/backup_path/path_element (list)
    If this variable is read-only (config: false) in the
    source YANG file, then _set_path_element is considered as a private
    method. Backends looking to populate this variable should
    do so via calling thisObj._set_path_element() directly.

    YANG Description: A list of path elements describing the backup service
path.
    """
    if hasattr(v, "_utype"):
      v = v._utype(v)
    try:
      t = YANGDynClass(v,base=YANGListType("path_element_id",path_element.path_element, yang_name="path-element", parent=self, is_container='list', user_ordered=False, path_helper=self._path_helper, yang_keys='path-element-id', extensions=None), is_container='list', yang_name="path-element", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, extensions=None, namespace='urn:ietf:params:xml:ns:yang:ietf-te-topology', defining_module='ietf-te-topology', yang_type='list', is_config=True)
    except (TypeError, ValueError):
      raise ValueError({
          'error-string': """path_element must be of a type compatible with list""",
          'defined-type': "list",
          'generated-type': """YANGDynClass(base=YANGListType("path_element_id",path_element.path_element, yang_name="path-element", parent=self, is_container='list', user_ordered=False, path_helper=self._path_helper, yang_keys='path-element-id', extensions=None), is_container='list', yang_name="path-element", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, extensions=None, namespace='urn:ietf:params:xml:ns:yang:ietf-te-topology', defining_module='ietf-te-topology', yang_type='list', is_config=True)""",
        })

    self.__path_element = t
    if hasattr(self, '_set'):
      self._set()

  def _unset_path_element(self):
    self.__path_element = YANGDynClass(base=YANGListType("path_element_id",path_element.path_element, yang_name="path-element", parent=self, is_container='list', user_ordered=False, path_helper=self._path_helper, yang_keys='path-element-id', extensions=None), is_container='list', yang_name="path-element", parent=self, path_helper=self._path_helper, extmethods=self._extmethods, register_paths=True, extensions=None, namespace='urn:ietf:params:xml:ns:yang:ietf-te-topology', defining_module='ietf-te-topology', yang_type='list', is_config=True)

  index = __builtin__.property(_get_index, _set_index)
  network_ref = __builtin__.property(_get_network_ref, _set_network_ref)
  path_element = __builtin__.property(_get_path_element, _set_path_element)


  _pyangbind_elements = OrderedDict([('index', index), ('network_ref', network_ref), ('path_element', path_element), ])


