#
# MIT License
#
# (C) Copyright 2019, 2021-2022 Hewlett Packard Enterprise Development LP
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
#
"""Node data to support Compute Rolling Upgrade.  Provides mappings
between different naming methods (XNAME, NID, NID Name) for nodes.

"""
import re
from ..bss_hosts import BSSHostTable


class NodeTable:
    """Singleton class to hold the list of known nodes (by XNAME) and
    mappings between NID and XNAME for use by other mocks that need to
    know about nodes.

    """
    _instance = None

    @classmethod
    def create(cls):
        """ Singleton table creator.
        """
        if cls._instance is None:
            cls._instance = cls()

    @classmethod
    def get_nid(cls, xname):
        """Get a NID for a node based on its XNAME

        """
        cls.create()
        return cls._instance.nids_by_xname[xname]

    @classmethod
    def get_nidname(cls, xname):
        """Get a NID based name for a node based on its XNAME

        """
        cls.create()
        nid = cls._instance.nids_by_xname[xname]
        return "nid%6.6d" % nid

    @classmethod
    def get_xname(cls, nid):
        """Get an XNAME for a node based on its NID

        """
        cls.create()
        return cls._instance.xnames_by_nid[nid]

    @classmethod
    def get_all_xnames(cls):
        """ Get the list of all recognized XNAMEs in the NodeTable.

        """
        cls.create()
        # Comprehension used here to avoid returning the list
        # reference
        #
        # pylint: disable=unnecessary-comprehension
        return [xname for xname in cls._instance.nodes]

    @staticmethod
    def nidname_to_nid(nidname):
        """Translate a nidname of the form 'nidNNNNNN' into the integer NID
        that it represents.

        """
        pat = r"^nid(?P<nid>[0-9]+)$"
        match = re.match(pat, nidname)
        return int(match.group('nid'), 10)

    @staticmethod
    def _learn_nodes():
        """Learn the node list from the BSS

        """
        host_table = BSSHostTable()
        xnames = host_table.get_all_xnames()
        nodes = {xname: host_table.get_nid(xname) for xname in xnames
                 if host_table.get_role(xname) == "Compute"}
        return nodes

    def __init__(self):
        """Constructor

        """
        self.nodes = self._learn_nodes()
        self.nids_by_xname = {}
        self.xnames_by_nid = {}
        for xname in self.nodes:
            nid = self.nodes[xname]
            self.nids_by_xname[xname] = nid
            self.xnames_by_nid[nid] = xname

#
# MIT License
#
# (C) Copyright 2019, 2021-2022 Hewlett Packard Enterprise Development LP
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
#
"""Node data to support Compute Rolling Upgrade.  Provides mappings
between different naming methods (XNAME, NID, NID Name) for nodes.

"""
import re
from ..bss_hosts import BSSHostTable


class NodeTable:
    """Singleton class to hold the list of known nodes (by XNAME) and
    mappings between NID and XNAME for use by other mocks that need to
    know about nodes.

    """
    _instance = None

    @classmethod
    def create(cls):
        """ Singleton table creator.
        """
        if cls._instance is None:
            cls._instance = cls()

    @classmethod
    def get_nid(cls, xname):
        """Get a NID for a node based on its XNAME

        """
        cls.create()
        return cls._instance.nids_by_xname[xname]

    @classmethod
    def get_nidname(cls, xname):
        """Get a NID based name for a node based on its XNAME

        """
        cls.create()
        nid = cls._instance.nids_by_xname[xname]
        return "nid%6.6d" % nid

    @classmethod
    def get_xname(cls, nid):
        """Get an XNAME for a node based on its NID

        """
        cls.create()
        return cls._instance.xnames_by_nid[nid]

    @classmethod
    def get_all_xnames(cls):
        """ Get the list of all recognized XNAMEs in the NodeTable.

        """
        cls.create()
        # Comprehension used here to avoid returning the list
        # reference
        #
        # pylint: disable=unnecessary-comprehension
        return [xname for xname in cls._instance.nodes]

    @staticmethod
    def nidname_to_nid(nidname):
        """Translate a nidname of the form 'nidNNNNNN' into the integer NID
        that it represents.

        """
        pat = r"^nid(?P<nid>[0-9]+)$"
        match = re.match(pat, nidname)
        return int(match.group('nid'), 10)

    @staticmethod
    def _learn_nodes():
        """Learn the node list from the BSS

        """
        host_table = BSSHostTable()
        xnames = host_table.get_all_xnames()
        nodes = {xname: host_table.get_nid(xname) for xname in xnames
                 if host_table.get_role(xname) == "Compute"}
        return nodes

    def __init__(self):
        """Constructor

        """
        self.nodes = self._learn_nodes()
        self.nids_by_xname = {}
        self.xnames_by_nid = {}
        for xname in self.nodes:
            nid = self.nodes[xname]
            self.nids_by_xname[xname] = nid
            self.xnames_by_nid[nid] = xname

# # MIT License # # (C) Copyright 2019, 2021-2022 Hewlett Packard Enterprise Development LP # # Permission is hereby granted, free of charge, to any person obtaining a # copy of this software and associated documentation files (the "Software"), # to deal in the Software without restriction, including without limitation # the rights to use, copy, modify, merge, publish, distribute, sublicense, # and/or sell copies of the Software, and to permit persons to whom the # Software is furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included # in all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL # THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR # OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, # ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR # OTHER DEALINGS IN THE SOFTWARE. # Node data to support Compute Rolling Upgrade.  Provides mappings between different naming methods (XNAME, NID, NID Name) for nodes. Singleton class to hold the list of known nodes (by XNAME) and     mappings between NID and XNAME for use by other mocks that need to     know about nodes. Singleton table creator. Get a NID for a node based on its XNAME Get a NID based name for a node based on its XNAME Get an XNAME for a node based on its NID Get the list of all recognized XNAMEs in the NodeTable. # Comprehension used here to avoid returning the list # reference # # pylint: disable=unnecessary-comprehension Translate a nidname of the form 'nidNNNNNN' into the integer NID         that it represents. Learn the node list from the BSS Constructor