#!/usr/bin/env python3
# MIT License
#
# Copyright (c) 2020 FABRIC Testbed
#
# 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.
#
#
# Author: <NAME> (<EMAIL>)
import bisect

from fabric_cf.actor.core.apis.abc_reservation_mixin import ABCReservationMixin
from fabric_cf.actor.core.common.constants import Constants
from fabric_cf.actor.core.common.exceptions import FrameworkException
from fabric_cf.actor.core.util.reservation_set import ReservationSet


class ReservationSetWrapper:
    """
    Internal representation for all reservations associated with a cycle.
    """
    def __init__(self, *, reservation_set: ReservationSet, cycle: int):
        """
        Constructor
        @params reservation_set: Reservation set
        @params cycle: cycle
        """
        self.reservation_set = reservation_set
        self.cycle = cycle

    def __lt__(self, other):
        if not isinstance(other, ReservationSetWrapper):
            # don't attempt to compare against unrelated types
            return NotImplemented

        return self.cycle < other.cycle

    def __gt__(self, other):
        if not isinstance(other, ReservationSetWrapper):
            # don't attempt to compare against unrelated types
            return NotImplemented

        return self.cycle > other.cycle

    def __str__(self):
        return "{}, cycle: {}".format(self.reservation_set, self.cycle)


class ReservationList:
    """
    Maintains a list of reservations associated with a cycle number. Allows for
    efficient retrieval and removal. Groups reservations by the cycle with which
    they are associated and maintains the reservation sets using a sorted list
    and a hash table. The hash table is used for quick lookup of a given
    reservation set. The sorted list allows for efficient reclaiming of sets,
    which are no longer needed.
    Cost of operations:
    - Insert: first insert to a cycle O(log(cycles)), subsequent inserts to an
    existing cycle: 0(1)
    - Remove: 0(1)
    - Reclaim: 0(k), where k is the number of cycles to reclaim.
    """

    def __init__(self):
        """
        Constructor
        """
        self.count = 0
        # list of ReservationSetWrapper
        self.rset_wrapper_list = []
        # map of <int(cycle), ReservationSet>
        self.cycle_to_rset = {}
        # map of <reservation_id, int(cycle)>
        self.reservation_id_to_cycle = {}

    def add_reservation(self, *, reservation: ABCReservationMixin, cycle: int):
        """
        Adds a reservation associated with a given cycle.
        @params reservation:  the reservation
        @params cycle: the cycle with which to associate the reservation
        """
        if reservation is None or cycle < 0 or reservation.get_reservation_id() is None:
            raise FrameworkException(Constants.INVALID_ARGUMENT)

        if reservation.get_reservation_id() in self.reservation_id_to_cycle:
            existing_cycle = self.reservation_id_to_cycle[reservation.get_reservation_id()]
            if existing_cycle == cycle:
                return
            else:
                raise RuntimeError(
                    "Reservation: #{} is already in the list at a different cycle. Please remove it first, "
                    "before adding to a different cycle".format(reservation.get_reservation_id()))

        reservation_set = None
        if cycle in self.cycle_to_rset:
            reservation_set = self.cycle_to_rset[cycle]
        else:
            reservation_set = ReservationSet()

        if reservation_set.contains(reservation=reservation) is False:
            reservation_set.add(reservation=reservation)
            self.count += 1

        if cycle not in self.cycle_to_rset:
            self.add_to_list(reservation_set=reservation_set, cycle=cycle)
            self.cycle_to_rset[cycle] = reservation_set

        self.reservation_id_to_cycle[reservation.get_reservation_id()] = cycle

    def add_to_list(self, *, reservation_set: ReservationSet, cycle: int):
        """
        Adds an entry to the sorted list
        @params reservation_set: reservation set
        @params cycle: cycle
        """
        entry = ReservationSetWrapper(reservation_set=reservation_set, cycle=cycle)
        bisect.insort(self.rset_wrapper_list, entry)

    def get_all_reservations(self, *, cycle: int) -> ReservationSet:
        """
        Returns all reservations associated with cycles up to and including the specified cycle
        @params cycle : cycle
        @returns a set of reservations associated with the cycles up to and including specified cycle.
        Note that removing from the set will not affect the ReservationList
        """
        result = ReservationSet()
        for entry in self.rset_wrapper_list:
            if entry.cycle <= cycle:
                for reservation in entry.reservation_set.values():
                    result.add(reservation=reservation)
            else:
                break
        return result

    def get_reservations(self, *, cycle: int) -> ReservationSet:
        """
        Returns all reservations associated with the specified cycle.
        @params cycle : cycle
        @return a set of reservations associated with the specified cycle. Note
        that removing from the set will not affect the ReservationList
        """
        result = ReservationSet()

        if cycle in self.cycle_to_rset:
            result = self.cycle_to_rset[cycle].clone()

        return result

    def remove_reservation(self, *, reservation: ABCReservationMixin):
        """
        Removes a reservation from the list.
        @params reservation: reservation to remove
        """
        rid = reservation.get_reservation_id()
        if rid in self.reservation_id_to_cycle:
            cycle = self.reservation_id_to_cycle[rid]
            self.reservation_id_to_cycle.pop(rid)

            if cycle in self.cycle_to_rset:
                reservation_set = self.cycle_to_rset[cycle]
                reservation_set.remove(reservation=reservation)

                if reservation_set.size() == 0:
                    self.cycle_to_rset.pop(cycle)
                self.count -= 1

    def size(self) -> int:
        """
        Returns the number of reservations in this collection
        @returns number of reservations in the collection
        """
        return self.count

    def tick(self, *, cycle: int):
        """
        Removes reservations associated with cycles less than or equal to the given cycle
        @params cycle: cycle
        """
        while True:
            if len(self.rset_wrapper_list) > 0:
                entry = self.rset_wrapper_list[0]
                if entry.cycle <= cycle:
                    self.rset_wrapper_list.remove(entry)

                    if entry.cycle in self.cycle_to_rset:
                        self.cycle_to_rset.pop(entry.cycle)

                    self.count -= entry.reservation_set.size()

                    for reservation in entry.reservation_set.values():
                        self.reservation_id_to_cycle.pop(reservation.get_reservation_id())
                    entry.reservation_set.clear()
                else:
                    break
            else:
                break

    def print(self):
        """
        Print the list (used for tests)
        :return:
        """
        print("rw_list: {} c_to_r: {} r_to_c: {}".format(len(self.rset_wrapper_list), len(self.cycle_to_rset),
                                                         len(self.reservation_id_to_cycle)))
        for rw in self.rset_wrapper_list:
            print("{}".format(rw))

        for k, v in self.cycle_to_rset.items():
            print("{}, cycle: {}".format(v, k))

        for k, v in self.reservation_id_to_cycle.items():
            print("rid: {}, cycle: {}".format(k, v))

#!/usr/bin/env python3
# MIT License
#
# Copyright (c) 2020 FABRIC Testbed
#
# 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.
#
#
# Author: <NAME> (<EMAIL>)
import bisect

from fabric_cf.actor.core.apis.abc_reservation_mixin import ABCReservationMixin
from fabric_cf.actor.core.common.constants import Constants
from fabric_cf.actor.core.common.exceptions import FrameworkException
from fabric_cf.actor.core.util.reservation_set import ReservationSet


class ReservationSetWrapper:
    """
    Internal representation for all reservations associated with a cycle.
    """
    def __init__(self, *, reservation_set: ReservationSet, cycle: int):
        """
        Constructor
        @params reservation_set: Reservation set
        @params cycle: cycle
        """
        self.reservation_set = reservation_set
        self.cycle = cycle

    def __lt__(self, other):
        if not isinstance(other, ReservationSetWrapper):
            # don't attempt to compare against unrelated types
            return NotImplemented

        return self.cycle < other.cycle

    def __gt__(self, other):
        if not isinstance(other, ReservationSetWrapper):
            # don't attempt to compare against unrelated types
            return NotImplemented

        return self.cycle > other.cycle

    def __str__(self):
        return "{}, cycle: {}".format(self.reservation_set, self.cycle)


class ReservationList:
    """
    Maintains a list of reservations associated with a cycle number. Allows for
    efficient retrieval and removal. Groups reservations by the cycle with which
    they are associated and maintains the reservation sets using a sorted list
    and a hash table. The hash table is used for quick lookup of a given
    reservation set. The sorted list allows for efficient reclaiming of sets,
    which are no longer needed.
    Cost of operations:
    - Insert: first insert to a cycle O(log(cycles)), subsequent inserts to an
    existing cycle: 0(1)
    - Remove: 0(1)
    - Reclaim: 0(k), where k is the number of cycles to reclaim.
    """

    def __init__(self):
        """
        Constructor
        """
        self.count = 0
        # list of ReservationSetWrapper
        self.rset_wrapper_list = []
        # map of <int(cycle), ReservationSet>
        self.cycle_to_rset = {}
        # map of <reservation_id, int(cycle)>
        self.reservation_id_to_cycle = {}

    def add_reservation(self, *, reservation: ABCReservationMixin, cycle: int):
        """
        Adds a reservation associated with a given cycle.
        @params reservation:  the reservation
        @params cycle: the cycle with which to associate the reservation
        """
        if reservation is None or cycle < 0 or reservation.get_reservation_id() is None:
            raise FrameworkException(Constants.INVALID_ARGUMENT)

        if reservation.get_reservation_id() in self.reservation_id_to_cycle:
            existing_cycle = self.reservation_id_to_cycle[reservation.get_reservation_id()]
            if existing_cycle == cycle:
                return
            else:
                raise RuntimeError(
                    "Reservation: #{} is already in the list at a different cycle. Please remove it first, "
                    "before adding to a different cycle".format(reservation.get_reservation_id()))

        reservation_set = None
        if cycle in self.cycle_to_rset:
            reservation_set = self.cycle_to_rset[cycle]
        else:
            reservation_set = ReservationSet()

        if reservation_set.contains(reservation=reservation) is False:
            reservation_set.add(reservation=reservation)
            self.count += 1

        if cycle not in self.cycle_to_rset:
            self.add_to_list(reservation_set=reservation_set, cycle=cycle)
            self.cycle_to_rset[cycle] = reservation_set

        self.reservation_id_to_cycle[reservation.get_reservation_id()] = cycle

    def add_to_list(self, *, reservation_set: ReservationSet, cycle: int):
        """
        Adds an entry to the sorted list
        @params reservation_set: reservation set
        @params cycle: cycle
        """
        entry = ReservationSetWrapper(reservation_set=reservation_set, cycle=cycle)
        bisect.insort(self.rset_wrapper_list, entry)

    def get_all_reservations(self, *, cycle: int) -> ReservationSet:
        """
        Returns all reservations associated with cycles up to and including the specified cycle
        @params cycle : cycle
        @returns a set of reservations associated with the cycles up to and including specified cycle.
        Note that removing from the set will not affect the ReservationList
        """
        result = ReservationSet()
        for entry in self.rset_wrapper_list:
            if entry.cycle <= cycle:
                for reservation in entry.reservation_set.values():
                    result.add(reservation=reservation)
            else:
                break
        return result

    def get_reservations(self, *, cycle: int) -> ReservationSet:
        """
        Returns all reservations associated with the specified cycle.
        @params cycle : cycle
        @return a set of reservations associated with the specified cycle. Note
        that removing from the set will not affect the ReservationList
        """
        result = ReservationSet()

        if cycle in self.cycle_to_rset:
            result = self.cycle_to_rset[cycle].clone()

        return result

    def remove_reservation(self, *, reservation: ABCReservationMixin):
        """
        Removes a reservation from the list.
        @params reservation: reservation to remove
        """
        rid = reservation.get_reservation_id()
        if rid in self.reservation_id_to_cycle:
            cycle = self.reservation_id_to_cycle[rid]
            self.reservation_id_to_cycle.pop(rid)

            if cycle in self.cycle_to_rset:
                reservation_set = self.cycle_to_rset[cycle]
                reservation_set.remove(reservation=reservation)

                if reservation_set.size() == 0:
                    self.cycle_to_rset.pop(cycle)
                self.count -= 1

    def size(self) -> int:
        """
        Returns the number of reservations in this collection
        @returns number of reservations in the collection
        """
        return self.count

    def tick(self, *, cycle: int):
        """
        Removes reservations associated with cycles less than or equal to the given cycle
        @params cycle: cycle
        """
        while True:
            if len(self.rset_wrapper_list) > 0:
                entry = self.rset_wrapper_list[0]
                if entry.cycle <= cycle:
                    self.rset_wrapper_list.remove(entry)

                    if entry.cycle in self.cycle_to_rset:
                        self.cycle_to_rset.pop(entry.cycle)

                    self.count -= entry.reservation_set.size()

                    for reservation in entry.reservation_set.values():
                        self.reservation_id_to_cycle.pop(reservation.get_reservation_id())
                    entry.reservation_set.clear()
                else:
                    break
            else:
                break

    def print(self):
        """
        Print the list (used for tests)
        :return:
        """
        print("rw_list: {} c_to_r: {} r_to_c: {}".format(len(self.rset_wrapper_list), len(self.cycle_to_rset),
                                                         len(self.reservation_id_to_cycle)))
        for rw in self.rset_wrapper_list:
            print("{}".format(rw))

        for k, v in self.cycle_to_rset.items():
            print("{}, cycle: {}".format(v, k))

        for k, v in self.reservation_id_to_cycle.items():
            print("rid: {}, cycle: {}".format(k, v))

#!/usr/bin/env python3 # MIT License # # Copyright (c) 2020 FABRIC Testbed # # 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. # # # Author: <NAME> (<EMAIL>) Internal representation for all reservations associated with a cycle. Constructor         @params reservation_set: Reservation set         @params cycle: cycle # don't attempt to compare against unrelated types # don't attempt to compare against unrelated types Maintains a list of reservations associated with a cycle number. Allows for     efficient retrieval and removal. Groups reservations by the cycle with which     they are associated and maintains the reservation sets using a sorted list     and a hash table. The hash table is used for quick lookup of a given     reservation set. The sorted list allows for efficient reclaiming of sets,     which are no longer needed.     Cost of operations:     - Insert: first insert to a cycle O(log(cycles)), subsequent inserts to an     existing cycle: 0(1)     - Remove: 0(1)     - Reclaim: 0(k), where k is the number of cycles to reclaim. Constructor # list of ReservationSetWrapper # map of <int(cycle), ReservationSet> # map of <reservation_id, int(cycle)> Adds a reservation associated with a given cycle.         @params reservation:  the reservation         @params cycle: the cycle with which to associate the reservation #{} is already in the list at a different cycle. Please remove it first, " Adds an entry to the sorted list         @params reservation_set: reservation set         @params cycle: cycle Returns all reservations associated with cycles up to and including the specified cycle         @params cycle : cycle         @returns a set of reservations associated with the cycles up to and including specified cycle.         Note that removing from the set will not affect the ReservationList Returns all reservations associated with the specified cycle.         @params cycle : cycle         @return a set of reservations associated with the specified cycle. Note         that removing from the set will not affect the ReservationList Removes a reservation from the list.         @params reservation: reservation to remove Returns the number of reservations in this collection         @returns number of reservations in the collection Removes reservations associated with cycles less than or equal to the given cycle         @params cycle: cycle Print the list (used for tests)         :return: