# Source code for spinn_front_end_common.interface.interface_functions.process_partition_constraints

# Copyright (c) 2017-2019 The University of Manchester
#
# This program is free software: you can redistribute it and/or modify
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

from spinn_utilities.progress_bar import ProgressBar
from pacman.model.constraints.key_allocator_constraints import (
AbstractKeyAllocatorConstraint)
from spinn_front_end_common.abstract_models import (
AbstractProvidesOutgoingPartitionConstraints,
AbstractProvidesIncomingPartitionConstraints)

[docs]class ProcessPartitionConstraints(object):
""" Adds constraints to partitions if the vertices at either end of the\
partition request it.
"""

[docs]    def __call__(self, machine_graph):
"""
:param ~pacman.model.graphs.machine.MachineGraph machine_graph:
"""
# generate progress bar
progress = ProgressBar(
machine_graph.n_vertices,
"Getting constraints for machine graph")

# iterate over each partition in the graph
for vertex in progress.over(machine_graph.vertices):
for partition in machine_graph.\
get_multicast_edge_partitions_starting_at_vertex(
vertex):
self._process_partition(partition)

@staticmethod
def _process_partition(partition):
"""
Process the partition by checking the pre_vertex and post vertices

Note: The machine level is checked first and only only if that does
not provide the api the app vertex is check next
:param ~.OutgoingEdgePartition partition:
"""
vertex = partition.pre_vertex
for constraint in vertex.constraints:
if isinstance(constraint, AbstractKeyAllocatorConstraint):

# call get_outgoing_partition_constraints method on pre_vertex
if isinstance(vertex, AbstractProvidesOutgoingPartitionConstraints):
vertex.get_outgoing_partition_constraints(partition))
else:
vertex = vertex.app_vertex
if isinstance(vertex,
AbstractProvidesOutgoingPartitionConstraints):
vertex.get_outgoing_partition_constraints(partition))

# call get_incoming_partition_constraints on post_vertex
for edge in partition.edges:
post_vertex = edge.post_vertex
if isinstance(post_vertex,
AbstractProvidesIncomingPartitionConstraints):