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from typing import Iterator
from common.Constants import DEFAULT_CONTEXT_UUID, DEFAULT_TOPOLOGY_UUID
#from common.exceptions.ServiceException import ServiceException
from common.metrics.Metrics import create_metrics, safe_and_metered_rpc_method
from common.orm.Database import Database
from context.proto.context_pb2 import \
Context, ContextEvent, ContextId, ContextIdList, ContextList, \
Device, DeviceEvent, DeviceId, DeviceIdList, DeviceList, \
Empty, \
Link, LinkEvent, LinkId, LinkIdList, LinkList, \
Service, ServiceEvent, ServiceId, ServiceIdList, ServiceList, \
Topology, TopologyEvent, TopologyId, TopologyIdList, TopologyList
from context.proto.context_pb2_grpc import ContextServiceServicer
from context.service.database.Models import ContextModel, TopologyModel
#from .Tools import check_link_id_request, check_link_request
LOGGER = logging.getLogger(__name__)
SERVICE_NAME = 'Context'
METHOD_NAMES = [
'ListContextIds', 'ListContexts', 'GetContext', 'SetContext', 'RemoveContext', 'GetContextEvents',
'ListTopologyIds', 'ListTopologies', 'GetTopology', 'SetTopology', 'RemoveTopology', 'GetTopologyEvents',
'ListDeviceIds', 'ListDevices', 'GetDevice', 'SetDevice', 'RemoveDevice', 'GetDeviceEvents',
'ListLinkIds', 'ListLinks', 'GetLink', 'SetLink', 'RemoveLink', 'GetLinkEvents',
'ListServiceIds', 'ListServices', 'GetService', 'SetService', 'RemoveService', 'GetServiceEvents',
]
METRICS = create_metrics(SERVICE_NAME, METHOD_NAMES)
class ContextServiceServicerImpl(ContextServiceServicer):
LOGGER.debug('Creating Servicer...')
self.database = database
LOGGER.debug('Servicer Created')
@safe_and_metered_rpc_method(METRICS, LOGGER)
def ListContextIds(self, request: Empty, context : grpc.ServicerContext) -> ContextIdList:
db_context_pks = sorted(list(ContextModel.get_primary_keys(self.database)))
return ContextIdList(context_ids=[ContextModel(self.database, pk).dump_id() for pk in db_context_pks])
@safe_and_metered_rpc_method(METRICS, LOGGER)
def ListContexts(self, request: Empty, context : grpc.ServicerContext) -> ContextList:
db_context_pks = sorted(list(ContextModel.get_primary_keys(self.database)))
return ContextList(contexts=[ContextModel(self.database, pk).dump() for pk in db_context_pks])
@safe_and_metered_rpc_method(METRICS, LOGGER)
def GetContext(self, request: ContextId, context : grpc.ServicerContext) -> Context:
str_key = key_to_str(request.context_uuid.uuid)
db_context = ContextModel(self.database, str_key, auto_load=False)
found = db_context.load()
if not found: return Context()
return Context(**db_context.dump(include_services=True, include_topologies=True))
@safe_and_metered_rpc_method(METRICS, LOGGER)
def SetContext(self, request: Context, context : grpc.ServicerContext) -> ContextId:
str_key = key_to_str(request.context_id.context_uuid.uuid)
db_context = ContextModel(self.database, str_key)
db_context.save()
# TODO: add topologies and services
return ContextId(**db_context.dump_id())
@safe_and_metered_rpc_method(METRICS, LOGGER)
def RemoveContext(self, request: ContextId, context : grpc.ServicerContext) -> Empty:
str_key = key_to_str(request.context_uuid.uuid)
db_context = ContextModel(self.database, str_key)
db_context.delete()
return Empty()
@safe_and_metered_rpc_method(METRICS, LOGGER)
def GetContextEvents(self, request: Empty, context : grpc.ServicerContext) -> Iterator[ContextEvent]:
pass
@safe_and_metered_rpc_method(METRICS, LOGGER)
def ListTopologyIds(self, request: ContextId, context : grpc.ServicerContext) -> TopologyIdList:
db_context = ContextModel(self.database, request.context_uuid.uuid)
db_topology_pks = db_context.references(TopologyModel)
db_topology_pks = sorted(map(operator.itemgetter(0), db_topology_pks))
topology_ids = [TopologyModel(self.database, pk).dump_id() for pk in db_topology_pks]
return TopologyIdList(topology_ids=topology_ids)
@safe_and_metered_rpc_method(METRICS, LOGGER)
def ListTopologies(self, request: ContextId, context : grpc.ServicerContext) -> TopologyList:
db_context = ContextModel(self.database, request.context_uuid.uuid)
db_topology_pks = db_context.references(TopologyModel)
db_topology_pks = sorted(map(operator.itemgetter(0), db_topology_pks))
print('db_topology_pks', db_topology_pks)
topologies = [TopologyModel(self.database, pk).dump() for pk in db_topology_pks]
return TopologyList(topologies=topologies)
@safe_and_metered_rpc_method(METRICS, LOGGER)
def GetTopology(self, request: TopologyId, context : grpc.ServicerContext) -> Topology:
str_key = key_to_str([request.context_id.context_uuid.uuid, request.topology_uuid.uuid])
db_topology = TopologyModel(self.database, str_key, auto_load=False)
found = db_topology.load()
if not found: return Topology()
return Topology(**db_topology.dump(include_devices=True, include_links=True))
@safe_and_metered_rpc_method(METRICS, LOGGER)
def SetTopology(self, request: Topology, context : grpc.ServicerContext) -> TopologyId:
str_context_key = key_to_str([request.topology_id.context_id.context_uuid.uuid])
str_topology_key = key_to_str([str_context_key, request.topology_id.topology_uuid.uuid])
db_context = ContextModel(self.database, str_context_key)
db_topology = TopologyModel(self.database, str_topology_key)
db_topology.context_fk = db_context
db_topology.save()
# TODO: add devices and links
return TopologyId(**db_topology.dump_id())
@safe_and_metered_rpc_method(METRICS, LOGGER)
def RemoveTopology(self, request: TopologyId, context : grpc.ServicerContext) -> Empty:
str_key = key_to_str([request.context_id.context_uuid.uuid, request.topology_uuid.uuid])
db_topology = TopologyModel(self.database, str_key)
db_topology.delete()
return Empty()
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@safe_and_metered_rpc_method(METRICS, LOGGER)
def GetTopologyEvents(self, request: Empty, context : grpc.ServicerContext) -> Iterator[TopologyEvent]:
pass
@safe_and_metered_rpc_method(METRICS, LOGGER)
def ListDeviceIds(self, request: Empty, context : grpc.ServicerContext) -> DeviceIdList:
pass
@safe_and_metered_rpc_method(METRICS, LOGGER)
def ListDevices(self, request: Empty, context : grpc.ServicerContext) -> DeviceList:
pass
@safe_and_metered_rpc_method(METRICS, LOGGER)
def GetDevice(self, request: DeviceId, context : grpc.ServicerContext) -> Device:
pass
@safe_and_metered_rpc_method(METRICS, LOGGER)
def SetDevice(self, request: Device, context : grpc.ServicerContext) -> DeviceId:
pass
@safe_and_metered_rpc_method(METRICS, LOGGER)
def RemoveDevice(self, request: DeviceId, context : grpc.ServicerContext) -> Empty:
pass
@safe_and_metered_rpc_method(METRICS, LOGGER)
def GetDeviceEvents(self, request: Empty, context : grpc.ServicerContext) -> Iterator[DeviceEvent]:
pass
@safe_and_metered_rpc_method(METRICS, LOGGER)
def ListLinkIds(self, request: Empty, context : grpc.ServicerContext) -> LinkIdList:
pass
@safe_and_metered_rpc_method(METRICS, LOGGER)
def ListLinks(self, request: Empty, context : grpc.ServicerContext) -> LinkList:
pass
@safe_and_metered_rpc_method(METRICS, LOGGER)
def GetLink(self, request: LinkId, context : grpc.ServicerContext) -> Link:
pass
@safe_and_metered_rpc_method(METRICS, LOGGER)
def SetLink(self, request: Link, context : grpc.ServicerContext) -> LinkId:
pass
@safe_and_metered_rpc_method(METRICS, LOGGER)
def RemoveLink(self, request: LinkId, context : grpc.ServicerContext) -> Empty:
pass
@safe_and_metered_rpc_method(METRICS, LOGGER)
def GetLinkEvents(self, request: Empty, context : grpc.ServicerContext) -> Iterator[LinkEvent]:
pass
@safe_and_metered_rpc_method(METRICS, LOGGER)
def ListServiceIds(self, request: ContextId, context : grpc.ServicerContext) -> ServiceIdList:
pass
@safe_and_metered_rpc_method(METRICS, LOGGER)
def ListServices(self, request: ContextId, context : grpc.ServicerContext) -> ServiceList:
pass
@safe_and_metered_rpc_method(METRICS, LOGGER)
def GetService(self, request: ServiceId, context : grpc.ServicerContext) -> Service:
pass
@safe_and_metered_rpc_method(METRICS, LOGGER)
def SetService(self, request: Service, context : grpc.ServicerContext) -> ServiceId:
pass
@safe_and_metered_rpc_method(METRICS, LOGGER)
def RemoveService(self, request: ServiceId, context : grpc.ServicerContext) -> Empty:
pass
@safe_and_metered_rpc_method(METRICS, LOGGER)
def GetServiceEvents(self, request: Empty, context : grpc.ServicerContext) -> Iterator[ServiceEvent]:
pass
# @safe_and_metered_rpc_method(METRICS, LOGGER)
# def GetTopology(self, request : Empty, grpc_context : grpc.ServicerContext) -> Topology:
# # ----- Validate request data and pre-conditions -----------------------------------------------------------
# db_context = self.database.context(DEFAULT_CONTEXT_UUID).create()
# db_topology = db_context.topology(DEFAULT_TOPOLOGY_UUID).create()
#
# # ----- Retrieve data from the database --------------------------------------------------------------------
# json_topology = db_topology.dump()
#
# # ----- Compose reply --------------------------------------------------------------------------------------
# return Topology(**json_topology)
#
# def CreaAddLink(self, request : Link, grpc_context : grpc.ServicerContext) -> LinkId:
# ADDLINK_COUNTER_STARTED.inc()
# try:
# LOGGER.debug('AddLink request: {}'.format(str(request)))
#
# # ----- Validate request data and pre-conditions -----------------------------------------------------------
# link_id, db_endpoints = check_link_request('AddLink', request, self.database, LOGGER)
#
# # ----- Implement changes in the database ------------------------------------------------------------------
# db_context = self.database.context(DEFAULT_CONTEXT_UUID).create()
# db_topology = db_context.topology(DEFAULT_TOPOLOGY_UUID).create()
# db_link = db_topology.link(link_id).create()
# for db_endpoint in db_endpoints:
# link_endpoint_id = '{}/{}'.format(
# db_endpoint.device_uuid, db_endpoint.endpoint_uuid)
# db_link.endpoint(link_endpoint_id).create(db_endpoint)
#
# # ----- Compose reply --------------------------------------------------------------------------------------
# reply = LinkId(**db_link.dump_id())
# LOGGER.debug('AddLink reply: {}'.format(str(reply)))
# ADDLINK_COUNTER_COMPLETED.inc()
# return reply
# except ServiceException as e:
# LOGGER.exception('AddLink exception')
# ADDLINK_COUNTER_FAILED.inc()
# grpc_context.abort(e.code, e.details)
# except Exception as e: # pragma: no cover
# LOGGER.exception('AddLink exception')
# ADDLINK_COUNTER_FAILED.inc()
# grpc_context.abort(grpc.StatusCode.INTERNAL, str(e))
#
# @DELETELINK_HISTOGRAM_DURATION.time()
# def DeleteLink(self, request : LinkId, grpc_context : grpc.ServicerContext) -> Empty:
# DELETELINK_COUNTER_STARTED.inc()
# try:
# LOGGER.debug('DeleteLink request: {}'.format(str(request)))
#
# # ----- Validate request data and pre-conditions -----------------------------------------------------------
# link_id = check_link_id_request('DeleteLink', request, self.database, LOGGER)
#
# # ----- Implement changes in the database ------------------------------------------------------------------
# db_context = self.database.context(DEFAULT_CONTEXT_UUID).create()
# db_topology = db_context.topology(DEFAULT_TOPOLOGY_UUID).create()
# db_topology.link(link_id).delete()
#
# # ----- Compose reply --------------------------------------------------------------------------------------
# reply = Empty()
# LOGGER.debug('DeleteLink reply: {}'.format(str(reply)))
# DELETELINK_COUNTER_COMPLETED.inc()
# return reply
# except ServiceException as e:
# LOGGER.exception('DeleteLink exception')
# DELETELINK_COUNTER_FAILED.inc()
# grpc_context.abort(e.code, e.details)
# except Exception as e: # pragma: no cover
# LOGGER.exception('DeleteLink exception')
# DELETELINK_COUNTER_FAILED.inc()
# grpc_context.abort(grpc.StatusCode.INTERNAL, str(e))