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# Copyright 2022-2024 ETSI OSG/SDG TeraFlowSDN (TFS) (https://tfs.etsi.org/)
#
# 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.
import grpc, logging
from typing import Iterator
from common.method_wrappers.Decorator import MetricsPool, safe_and_metered_rpc_method
from common.proto.context_pb2 import QoDConstraintsRequest, Constraint, ConstraintActionEnum, Constraint_QoSProfile, Constraint_Schedule, Empty, QoSProfileId, QoSProfile
from common.proto.qos_profile_pb2_grpc import QoSProfileServiceServicer
from context.client.ContextClient import ContextClient
LOGGER = logging.getLogger(__name__)
METRICS_POOL = MetricsPool('QoSProfile', 'RPC')
class QoSProfileServiceServicerImpl(QoSProfileServiceServicer):
def __init__(self ) -> None:
LOGGER.debug('Servicer Created')
@safe_and_metered_rpc_method(METRICS_POOL, LOGGER)
def CreateQoSProfile(self, request: QoSProfile, context: grpc.ServicerContext) -> QoSProfile:
context_client = ContextClient()
try:
qos_profile_get = context_client.GetQoSProfile(request.qos_profile_id)
context.set_details(f'QoSProfile {request.qos_profile_id.qos_profile_id.uuid} already exists')
context.set_code(grpc.StatusCode.ALREADY_EXISTS)
return QoSProfile()
except grpc._channel._InactiveRpcError as exc:
if exc.code() != grpc.StatusCode.NOT_FOUND:
raise exc
qos_profile = context_client.CreateQoSProfile(request)
return qos_profile
@safe_and_metered_rpc_method(METRICS_POOL, LOGGER)
def UpdateQoSProfile(self, request: QoSProfile, context: grpc.ServicerContext) -> QoSProfile:
context_client = ContextClient()
try:
_ = context_client.GetQoSProfile(request.qos_profile_id)
except grpc._channel._InactiveRpcError as exc:
if exc.code() == grpc.StatusCode.NOT_FOUND:
context.set_details(f'QoSProfile {request.qos_profile_id.qos_profile_id.uuid} not found')
context.set_code(grpc.StatusCode.NOT_FOUND)
return QoSProfile()
qos_profile = context_client.UpdateQoSProfile(request)
return qos_profile
@safe_and_metered_rpc_method(METRICS_POOL, LOGGER)
def DeleteQoSProfile(self, request: QoSProfileId, context: grpc.ServicerContext) -> Empty:
context_client = ContextClient()
try:
_ = context_client.GetQoSProfile(request)
except grpc._channel._InactiveRpcError as exc:
if exc.code() == grpc.StatusCode.NOT_FOUND:
context.set_details(f'QoSProfile {request.qos_profile_id.uuid} not found')
context.set_code(grpc.StatusCode.NOT_FOUND)
return QoSProfile()
empty = context_client.DeleteQoSProfile(request)
return empty
@safe_and_metered_rpc_method(METRICS_POOL, LOGGER)
def GetQoSProfile(self, request: QoSProfileId, context: grpc.ServicerContext) -> QoSProfile:
context_client = ContextClient()
try:
qos_profile = context_client.GetQoSProfile(request)
except grpc._channel._InactiveRpcError as exc:
if exc.code() == grpc.StatusCode.NOT_FOUND:
context.set_details(f'QoSProfile {request.qos_profile_id.uuid} not found')
context.set_code(grpc.StatusCode.NOT_FOUND)
return QoSProfile()
return qos_profile
@safe_and_metered_rpc_method(METRICS_POOL, LOGGER)
def GetQoSProfiles(self, request: Empty, context: grpc.ServicerContext) -> Iterator[QoSProfile]:
context_client = ContextClient()
yield from context_client.GetQoSProfiles(request)
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@safe_and_metered_rpc_method(METRICS_POOL, LOGGER)
def GetConstraintListFromQoSProfile(self, request: QoDConstraintsRequest, context: grpc.ServicerContext) -> Iterator[Constraint]:
context_client = ContextClient()
try:
qos_profile = context_client.GetQoSProfile(request.qos_profile_id)
except grpc._channel._InactiveRpcError as exc:
if exc.code() == grpc.StatusCode.NOT_FOUND:
context.set_details(f'QoSProfile {request.qos_profile_id.qos_profile_id.uuid} not found')
context.set_code(grpc.StatusCode.NOT_FOUND)
yield Constraint()
qos_profile_constraint = Constraint_QoSProfile()
qos_profile_constraint.target_min_upstream_rate.CopyFrom(qos_profile.targetMinUpstreamRate)
qos_profile_constraint.max_upstream_rate.CopyFrom(qos_profile.maxUpstreamRate)
qos_profile_constraint.max_upstream_burst_rate.CopyFrom(qos_profile.maxUpstreamBurstRate)
qos_profile_constraint.target_min_downstream_rate.CopyFrom(qos_profile.targetMinDownstreamRate)
qos_profile_constraint.max_downstream_rate.CopyFrom(qos_profile.maxDownstreamRate)
qos_profile_constraint.max_downstream_burst_rate.CopyFrom(qos_profile.maxDownstreamBurstRate)
qos_profile_constraint.min_duration.CopyFrom(qos_profile.minDuration)
qos_profile_constraint.max_duration.CopyFrom(qos_profile.maxDuration)
qos_profile_constraint.priority = qos_profile.priority
qos_profile_constraint.packet_delay_budget.CopyFrom(qos_profile.packetDelayBudget)
qos_profile_constraint.jitter.CopyFrom(qos_profile.jitter)
qos_profile_constraint.packet_error_loss_rate =qos_profile.packetErrorLossRate
constraint_qos = Constraint()
constraint_qos.action = ConstraintActionEnum.CONSTRAINTACTION_SET
constraint_qos.qos_profile.CopyFrom(qos_profile_constraint)
yield constraint_qos
constraint_schedule = Constraint()
constraint_schedule.action = ConstraintActionEnum.CONSTRAINTACTION_SET
constraint_schedule.schedule.CopyFrom(Constraint_Schedule(start_timestamp=request.start_timestamp, duration_days=request.duration/86400))
yield constraint_schedule