Context compoent:

- progress on migration to CockroachDB (partial)

scripts/run_tests_locally-context.sh

@@ -36,14 +36,16 @@ cd $PROJECTDIR/src
 #export REDIS_SERVICE_HOST=$(kubectl get node $TFS_K8S_HOSTNAME -o 'jsonpath={.status.addresses[?(@.type=="InternalIP")].address}')
 #export REDIS_SERVICE_PORT=$(kubectl --namespace $TFS_K8S_NAMESPACE get service redis-tests -o 'jsonpath={.spec.ports[?(@.port==6379)].nodePort}')
 
-export CRDB_URI="cockroachdb://tfs:tfs123@10.1.7.195:26257/tfs?sslmode=require"
+#export CRDB_URI="cockroachdb://tfs:tfs123@127.0.0.1:26257/tfs_test?sslmode=require"
+export CRDB_URI="cockroachdb://tfs:tfs123@10.1.7.195:26257/tfs_test?sslmode=require"
 export PYTHONPATH=/home/tfs/tfs-ctrl/src
 
 # Run unitary tests and analyze coverage of code at same time
 #coverage run --rcfile=$RCFILE --append -m pytest --log-level=INFO --verbose --maxfail=1 \
 #    context/tests/test_unitary.py
 
-pytest --log-level=INFO --verbose -o log_cli=true --maxfail=1 \
+# --log-level=INFO -o log_cli=true
+pytest --verbose --maxfail=1 --durations=0 \
     context/tests/test_unitary.py
 
 #kubectl --namespace $TFS_K8S_NAMESPACE delete service redis-tests

src/context/service/Engine.py

@@ -20,21 +20,31 @@ LOGGER = logging.getLogger(__name__)
 APP_NAME = 'tfs'
 
 class Engine:
-    def get_engine(self) -> sqlalchemy.engine.Engine:
+    @staticmethod
+    def get_engine() -> sqlalchemy.engine.Engine:
         crdb_uri = get_setting('CRDB_URI')
 
         try:
             engine = sqlalchemy.create_engine(
-                crdb_uri, connect_args={'application_name': APP_NAME}, echo=False, future=True)
+                crdb_uri, connect_args={'application_name': APP_NAME}, echo=True, future=True)
         except: # pylint: disable=bare-except
             LOGGER.exception('Failed to connect to database: {:s}'.format(crdb_uri))
             return None
 
         try:
-            if not sqlalchemy_utils.database_exists(engine.url):
-                sqlalchemy_utils.create_database(engine.url)
+            Engine.create_database(engine)
         except: # pylint: disable=bare-except
-            LOGGER.exception('Failed to check/create to database: {:s}'.format(crdb_uri))
+            LOGGER.exception('Failed to check/create to database: {:s}'.format(engine.url))
             return None
 
         return engine
+
+    @staticmethod
+    def create_database(engine : sqlalchemy.engine.Engine) -> None:
+        if not sqlalchemy_utils.database_exists(engine.url):
+            sqlalchemy_utils.create_database(engine.url)
+
+    @staticmethod
+    def drop_database(engine : sqlalchemy.engine.Engine) -> None:
+        if sqlalchemy_utils.database_exists(engine.url):
+            sqlalchemy_utils.drop_database(engine.url)

src/context/service/__main__.py

@@ -45,7 +45,7 @@ def main():
     metrics_port = get_metrics_port()
     start_http_server(metrics_port)
 
-    db_engine = Engine().get_engine()
+    db_engine = Engine.get_engine()
     rebuild_database(db_engine, drop_if_exists=False)
 
     # Get message broker instance

src/context/service/database/ContextModel.py

@@ -12,15 +12,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import logging
-from typing import Dict
+from typing import Dict, List
 from sqlalchemy import Column, Float, String
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import relationship
 from ._Base import _Base
 
-LOGGER = logging.getLogger(__name__)
-
 class ContextModel(_Base):
     __tablename__ = 'context'
     context_uuid = Column(UUID(as_uuid=False), primary_key=True)
@@ -28,33 +25,20 @@ class ContextModel(_Base):
     created_at   = Column(Float)
 
     topology = relationship('TopologyModel', back_populates='context')
+    #service  = relationship('ServiceModel', back_populates='context')
+    #slice    = relationship('SliceModel', back_populates='context')
 
     def dump_id(self) -> Dict:
         return {'context_uuid': {'uuid': self.context_uuid}}
 
-    #@staticmethod
-    #def main_pk_name():
-    #    return 'context_uuid'
-
-    """    
-    def dump_service_ids(self) -> List[Dict]:
-        from .ServiceModel import ServiceModel # pylint: disable=import-outside-toplevel
-        db_service_pks = self.references(ServiceModel)
-        return [ServiceModel(self.database, pk).dump_id() for pk,_ in db_service_pks]
-
     def dump_topology_ids(self) -> List[Dict]:
-        from .TopologyModel import TopologyModel # pylint: disable=import-outside-toplevel
-        db_topology_pks = self.references(TopologyModel)
-        return [TopologyModel(self.database, pk).dump_id() for pk,_ in db_topology_pks]
-    """
-
-    def dump(self,
-        include_services : bool = True,     # pylint: disable=arguments-differ
-        include_slices : bool = True,       # pylint: disable=arguments-differ
-        include_topologies : bool = True    # pylint: disable=arguments-differ
-    ) -> Dict:
-        result = {'context_id': self.dump_id(), 'name': self.context_name}
-        # if include_services: result['service_ids'] = self.dump_service_ids()
-        # if include_slices: result['slice_ids'] = self.dump_slice_ids()
-        # if include_topologies: result['topology_ids'] = self.dump_topology_ids()
-        return result
+        return 
+
+    def dump(self) -> Dict:
+        return {
+            'context_id'  : self.dump_id(),
+            'name'        : self.context_name,
+            'topology_ids': [obj.dump_id() for obj in self.topology],
+            #'service_ids' : [obj.dump_id() for obj in self.service ],
+            #'slice_ids'   : [obj.dump_id() for obj in self.slice   ],
+        }

src/context/service/database/DeviceModel.py

@@ -11,17 +11,18 @@
 # 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 enum
 import functools, logging
-import uuid
-from typing import Dict, List
-from common.orm.Database import Database
-from common.orm.backend.Tools import key_to_str
+#import uuid
+from typing import Dict #, List
+#from common.orm.Database import Database
+#from common.orm.backend.Tools import key_to_str
 from common.proto.context_pb2 import DeviceDriverEnum, DeviceOperationalStatusEnum
-from sqlalchemy import Column, ForeignKey, String, Enum
+from sqlalchemy import Column, Float, ForeignKey, String, Enum
 from sqlalchemy.dialects.postgresql import UUID, ARRAY
-from context.service.database._Base import Base
 from sqlalchemy.orm import relationship
+from context.service.database._Base import _Base
 from .Tools import grpc_to_enum
 
 LOGGER = logging.getLogger(__name__)
@@ -46,80 +47,152 @@ class ORM_DeviceOperationalStatusEnum(enum.Enum):
 grpc_to_enum__device_operational_status = functools.partial(
     grpc_to_enum, DeviceOperationalStatusEnum, ORM_DeviceOperationalStatusEnum)
 
-class DeviceModel(Base):
-    __tablename__ = 'Device'
+class DeviceModel(_Base):
+    __tablename__ = 'device'
     device_uuid = Column(UUID(as_uuid=False), primary_key=True)
-    device_type = Column(String)
-    device_config_uuid = Column(UUID(as_uuid=False), ForeignKey("Config.config_uuid", ondelete='CASCADE'))
-    device_operational_status = Column(Enum(ORM_DeviceOperationalStatusEnum, create_constraint=False,
-                                            native_enum=False))
+    device_name = Column(String(), nullable=False)
+    device_type = Column(String(), nullable=False)
+    #device_config_uuid = Column(UUID(as_uuid=False), ForeignKey('config.config_uuid', ondelete='CASCADE'))
+    device_operational_status = Column(Enum(ORM_DeviceOperationalStatusEnum))
+    device_drivers = Column(ARRAY(Enum(ORM_DeviceDriverEnum), dimensions=1))
+    created_at = Column(Float)
 
     # Relationships
-    device_config = relationship("ConfigModel", passive_deletes=True, lazy="joined")
-    driver = relationship("DriverModel", passive_deletes=True, back_populates="device")
-    endpoints = relationship("EndPointModel", passive_deletes=True, back_populates="device")
+    topology_device = relationship('TopologyDeviceModel', back_populates='devices')
+    #device_config = relationship("ConfigModel", passive_deletes=True, lazy="joined")
+    endpoints = relationship('EndPointModel', passive_deletes=True, back_populates='device')
 
     def dump_id(self) -> Dict:
         return {'device_uuid': {'uuid': self.device_uuid}}
 
-    def dump_config(self) -> Dict:
-        return self.device_config.dump()
-
-    def dump_drivers(self) -> List[int]:
-        response = []
-        for a in self.driver:
-            response.append(a.dump())
-
-        return response
-
-    def dump_endpoints(self) -> List[Dict]:
-        response = []
-
-        for a in self.endpoints:
-            response.append(a.dump())
-
-        return response
-
-    def dump(   # pylint: disable=arguments-differ
-            self, include_config_rules=True, include_drivers=True, include_endpoints=True
-        ) -> Dict:
-        result = {
-            'device_id': self.dump_id(),
-            'device_type': self.device_type,
+    def dump(self) -> Dict:
+        return {
+            'device_id'                : self.dump_id(),
+            'name'                     : self.device_name,
+            'device_type'              : self.device_type,
             'device_operational_status': self.device_operational_status.value,
+            'device_drivers'           : [d.value for d in self.device_drivers],
+            #'device_config'            : {'config_rules': self.device_config.dump()},
+            #'device_endpoints'         : [ep.dump() for ep in self.endpoints],
         }
-        if include_config_rules: result.setdefault('device_config', {})['config_rules'] = self.dump_config()
-        if include_drivers: result['device_drivers'] = self.dump_drivers()
-        if include_endpoints: result['device_endpoints'] = self.dump_endpoints()
-        return result
-
-    @staticmethod
-    def main_pk_name():
-        return 'device_uuid'
 
-class DriverModel(Base): # pylint: disable=abstract-method
-    __tablename__ = 'Driver'
-    # driver_uuid = Column(UUID(as_uuid=False), primary_key=True)
-    device_uuid = Column(UUID(as_uuid=False), ForeignKey("Device.device_uuid", ondelete='CASCADE'), primary_key=True)
-    driver = Column(Enum(ORM_DeviceDriverEnum, create_constraint=False, native_enum=False))
-
-    # Relationships
-    device = relationship("DeviceModel", back_populates="driver")
-
-
-    def dump(self) -> Dict:
-        return self.driver.value
-
-    @staticmethod
-    def main_pk_name():
-        return 'device_uuid'
+#def set_drivers(database : Database, db_device : DeviceModel, grpc_device_drivers):
+#    db_device_pk = db_device.device_uuid
+#    for driver in grpc_device_drivers:
+#        orm_driver = grpc_to_enum__device_driver(driver)
+#        str_device_driver_key = key_to_str([db_device_pk, orm_driver.name])
+#        db_device_driver = DriverModel(database, str_device_driver_key)
+#        db_device_driver.device_fk = db_device
+#        db_device_driver.driver = orm_driver
+#        db_device_driver.save()
+
+#    def set_kpi_sample_types(self, db_endpoint: EndPointModel, grpc_endpoint_kpi_sample_types):
+#        db_endpoint_pk = db_endpoint.endpoint_uuid
+#        for kpi_sample_type in grpc_endpoint_kpi_sample_types:
+#            orm_kpi_sample_type = grpc_to_enum__kpi_sample_type(kpi_sample_type)
+#            # str_endpoint_kpi_sample_type_key = key_to_str([db_endpoint_pk, orm_kpi_sample_type.name])
+#            data = {'endpoint_uuid': db_endpoint_pk,
+#                    'kpi_sample_type': orm_kpi_sample_type.name,
+#                    'kpi_uuid': str(uuid.uuid4())}
+#            db_endpoint_kpi_sample_type = KpiSampleTypeModel(**data)
+#            self.database.create(db_endpoint_kpi_sample_type)
+
+#    def set_drivers(self, db_device: DeviceModel, grpc_device_drivers):
+#        db_device_pk = db_device.device_uuid
+#        for driver in grpc_device_drivers:
+#            orm_driver = grpc_to_enum__device_driver(driver)
+#            str_device_driver_key = key_to_str([db_device_pk, orm_driver.name])
+#            driver_config = {
+#                # "driver_uuid": str(uuid.uuid4()),
+#                "device_uuid": db_device_pk,
+#                "driver": orm_driver.name
+#            }
+#            db_device_driver = DriverModel(**driver_config)
+#            db_device_driver.device_fk = db_device
+#            db_device_driver.driver = orm_driver
+#
+#            self.database.create_or_update(db_device_driver)
 
-def set_drivers(database : Database, db_device : DeviceModel, grpc_device_drivers):
-    db_device_pk = db_device.device_uuid
-    for driver in grpc_device_drivers:
-        orm_driver = grpc_to_enum__device_driver(driver)
-        str_device_driver_key = key_to_str([db_device_pk, orm_driver.name])
-        db_device_driver = DriverModel(database, str_device_driver_key)
-        db_device_driver.device_fk = db_device
-        db_device_driver.driver = orm_driver
-        db_device_driver.save()
+#    def update_config(
+#            self, session, db_parent_pk: str, config_name: str,
+#            raw_config_rules: List[Tuple[ORM_ConfigActionEnum, str, str]]
+#    ) -> List[Tuple[Union[ConfigModel, ConfigRuleModel], bool]]:
+#
+#        created = False
+#
+#        db_config = session.query(ConfigModel).filter_by(**{ConfigModel.main_pk_name(): db_parent_pk}).one_or_none()
+#        if not db_config:
+#            db_config = ConfigModel()
+#            setattr(db_config, ConfigModel.main_pk_name(), db_parent_pk)
+#            session.add(db_config)
+#            session.commit()
+#            created = True
+#
+#        LOGGER.info('UPDATED-CONFIG: {}'.format(db_config.dump()))
+#
+#        db_objects: List[Tuple[Union[ConfigModel, ConfigRuleModel], bool]] = [(db_config, created)]
+#
+#        for position, (action, resource_key, resource_value) in enumerate(raw_config_rules):
+#            if action == ORM_ConfigActionEnum.SET:
+#                result : Tuple[ConfigRuleModel, bool] = self.set_config_rule(
+#                    db_config, position, resource_key, resource_value)
+#                db_config_rule, updated = result
+#                db_objects.append((db_config_rule, updated))
+#            elif action == ORM_ConfigActionEnum.DELETE:
+#                self.delete_config_rule(db_config, resource_key)
+#            else:
+#                msg = 'Unsupported action({:s}) for resource_key({:s})/resource_value({:s})'
+#                raise AttributeError(
+#                    msg.format(str(ConfigActionEnum.Name(action)), str(resource_key), str(resource_value)))
+#
+#        return db_objects
+#
+#    def set_config_rule(self, db_config: ConfigModel, position: int, resource_key: str, resource_value: str,
+#    ):  # -> Tuple[ConfigRuleModel, bool]:
+#
+#        from src.context.service.database.Tools import fast_hasher
+#        str_rule_key_hash = fast_hasher(resource_key)
+#        str_config_rule_key = key_to_str([db_config.config_uuid, str_rule_key_hash], separator=':')
+#        pk = str(uuid.uuid5(uuid.UUID('9566448d-e950-425e-b2ae-7ead656c7e47'), str_config_rule_key))
+#        data = {'config_rule_uuid': pk, 'config_uuid': db_config.config_uuid, 'position': position,
+#                'action': ORM_ConfigActionEnum.SET, 'key': resource_key, 'value': resource_value}
+#        to_add = ConfigRuleModel(**data)
+#
+#        result, updated = self.database.create_or_update(to_add)
+#        return result, updated
+#
+#    def delete_config_rule(
+#            self, db_config: ConfigModel, resource_key: str
+#    ) -> None:
+#
+#        from src.context.service.database.Tools import fast_hasher
+#        str_rule_key_hash = fast_hasher(resource_key)
+#        str_config_rule_key = key_to_str([db_config.pk, str_rule_key_hash], separator=':')
+#
+#        db_config_rule = self.database.get_object(ConfigRuleModel, str_config_rule_key, raise_if_not_found=False)
+#
+#        if db_config_rule is None:
+#            return
+#        db_config_rule.delete()
+#
+#    def delete_all_config_rules(self, db_config: ConfigModel) -> None:
+#
+#        db_config_rule_pks = db_config.references(ConfigRuleModel)
+#        for pk, _ in db_config_rule_pks: ConfigRuleModel(self.database, pk).delete()
+#
+#        """
+#        for position, (action, resource_key, resource_value) in enumerate(raw_config_rules):
+#            if action == ORM_ConfigActionEnum.SET:
+#                result: Tuple[ConfigRuleModel, bool] = set_config_rule(
+#                    database, db_config, position, resource_key, resource_value)
+#                db_config_rule, updated = result
+#                db_objects.append((db_config_rule, updated))
+#            elif action == ORM_ConfigActionEnum.DELETE:
+#                delete_config_rule(database, db_config, resource_key)
+#            else:
+#                msg = 'Unsupported action({:s}) for resource_key({:s})/resource_value({:s})'
+#                raise AttributeError(
+#                    msg.format(str(ConfigActionEnum.Name(action)), str(resource_key), str(resource_value)))
+#
+#        return db_objects
+#        """

src/context/service/database/EndPointModel.py

@@ -12,93 +12,63 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import logging
-from typing import Dict, List, Optional, Tuple
-from common.orm.Database import Database
-from common.orm.HighLevel import get_object
-from common.orm.backend.Tools import key_to_str
-from common.proto.context_pb2 import EndPointId
-from .KpiSampleType import ORM_KpiSampleTypeEnum, grpc_to_enum__kpi_sample_type
-from sqlalchemy import Column, ForeignKey, String, Enum, ForeignKeyConstraint
-from sqlalchemy.dialects.postgresql import UUID
-from context.service.database._Base import Base
+import enum, functools
+from typing import Dict
+from sqlalchemy import Column, String, Enum, ForeignKeyConstraint
+from sqlalchemy.dialects.postgresql import ARRAY, UUID
 from sqlalchemy.orm import relationship
-LOGGER = logging.getLogger(__name__)
+from common.proto.kpi_sample_types_pb2 import KpiSampleType
+from ._Base import _Base
+from .Tools import grpc_to_enum
 
-class EndPointModel(Base):
-    __tablename__ = 'EndPoint'
-    topology_uuid = Column(UUID(as_uuid=False), ForeignKey("Topology.topology_uuid"), primary_key=True)
-    device_uuid = Column(UUID(as_uuid=False), ForeignKey("Device.device_uuid", ondelete='CASCADE'), primary_key=True)
-    endpoint_uuid = Column(UUID(as_uuid=False), primary_key=True, unique=True)
-    endpoint_type = Column(String)
+class ORM_KpiSampleTypeEnum(enum.Enum):
+    UNKNOWN             = KpiSampleType.KPISAMPLETYPE_UNKNOWN
+    PACKETS_TRANSMITTED = KpiSampleType.KPISAMPLETYPE_PACKETS_TRANSMITTED
+    PACKETS_RECEIVED    = KpiSampleType.KPISAMPLETYPE_PACKETS_RECEIVED
+    BYTES_TRANSMITTED   = KpiSampleType.KPISAMPLETYPE_BYTES_TRANSMITTED
+    BYTES_RECEIVED      = KpiSampleType.KPISAMPLETYPE_BYTES_RECEIVED
+
+grpc_to_enum__kpi_sample_type = functools.partial(
+    grpc_to_enum, KpiSampleType, ORM_KpiSampleTypeEnum)
 
-    # Relationships
-    kpi_sample_types = relationship("KpiSampleTypeModel", passive_deletes=True, back_populates="EndPoint")
-    device = relationship("DeviceModel", back_populates="endpoints")
+class EndPointModel(_Base):
+    __tablename__ = 'endpoint'
+    context_uuid  = Column(UUID(as_uuid=False), primary_key=True)
+    topology_uuid = Column(UUID(as_uuid=False), primary_key=True)
+    device_uuid   = Column(UUID(as_uuid=False), primary_key=True)
+    endpoint_uuid = Column(UUID(as_uuid=False), primary_key=True)
+    endpoint_type = Column(String)
+    kpi_sample_types = Column(ARRAY(Enum(ORM_KpiSampleTypeEnum), dimensions=1))
 
-    @staticmethod
-    def main_pk_name():
-        return 'endpoint_uuid'
+    __table_args__ = (
+        ForeignKeyConstraint(
+            ['context_uuid', 'topology_uuid'],
+            ['topology.context_uuid', 'topology.topology_uuid'],
+            ondelete='CASCADE'),
+        ForeignKeyConstraint(
+            ['device_uuid'],
+            ['device.device_uuid'],
+            ondelete='CASCADE'),
+    )
 
-    def delete(self) -> None:
-        for db_kpi_sample_type_pk,_ in self.references(KpiSampleTypeModel):
-            KpiSampleTypeModel(self.database, db_kpi_sample_type_pk).delete()
-        super().delete()
+    topology = relationship('TopologyModel', back_populates='endpoints')
+    device   = relationship('DeviceModel', back_populates='endpoints')
 
     def dump_id(self) -> Dict:
         result = {
+            'topology_id': self.topology.dump_id(),
             'device_id': self.device.dump_id(),
             'endpoint_uuid': {'uuid': self.endpoint_uuid},
         }
         return result
 
-    def dump_kpi_sample_types(self) -> List[int]:
-        # db_kpi_sample_type_pks = self.references(KpiSampleTypeModel)
-        # return [KpiSampleTypeModel(self.database, pk).dump() for pk,_ in db_kpi_sample_type_pks]
-        response = []
-        for a in self.kpi_sample_types:
-            response.append(a.dump())
-        return response
-
-    def dump(   # pylint: disable=arguments-differ
-            self, include_kpi_sample_types=True
-        ) -> Dict:
-        result = {
-            'endpoint_id': self.dump_id(),
-            'endpoint_type': self.endpoint_type,
-        }
-        if include_kpi_sample_types: result['kpi_sample_types'] = self.dump_kpi_sample_types()
-        return result
-
-
-class KpiSampleTypeModel(Base): # pylint: disable=abstract-method
-    __tablename__ = 'KpiSampleType'
-    kpi_uuid = Column(UUID(as_uuid=False), primary_key=True)
-    endpoint_uuid = Column(UUID(as_uuid=False), ForeignKey("EndPoint.endpoint_uuid",  ondelete='CASCADE'))
-    kpi_sample_type = Column(Enum(ORM_KpiSampleTypeEnum, create_constraint=False,
-                                                  native_enum=False))
-    # __table_args__ = (ForeignKeyConstraint([endpoint_uuid], [EndPointModel.endpoint_uuid]), {})
-
-    # Relationships
-    EndPoint = relationship("EndPointModel", passive_deletes=True, back_populates="kpi_sample_types")
-
     def dump(self) -> Dict:
-        return self.kpi_sample_type.value
-
-    def main_pk_name(self):
-        return 'kpi_uuid'
+        return {
+            'endpoint_id'     : self.dump_id(),
+            'endpoint_type'   : self.endpoint_type,
+            'kpi_sample_types': [kst.value for kst in self.kpi_sample_types],
+        }
 
-"""
-def set_kpi_sample_types(database : Database, db_endpoint : EndPointModel, grpc_endpoint_kpi_sample_types):
-    db_endpoint_pk = db_endpoint.pk
-    for kpi_sample_type in grpc_endpoint_kpi_sample_types:
-        orm_kpi_sample_type = grpc_to_enum__kpi_sample_type(kpi_sample_type)
-        str_endpoint_kpi_sample_type_key = key_to_str([db_endpoint_pk, orm_kpi_sample_type.name])
-        db_endpoint_kpi_sample_type = KpiSampleTypeModel(database, str_endpoint_kpi_sample_type_key)
-        db_endpoint_kpi_sample_type.endpoint_fk = db_endpoint
-        db_endpoint_kpi_sample_type.kpi_sample_type = orm_kpi_sample_type
-        db_endpoint_kpi_sample_type.save()
-"""
 # def get_endpoint(
 #     database : Database, grpc_endpoint_id : EndPointId,
 #     validate_topology_exists : bool = True, validate_device_in_topology : bool = True

src/context/service/database/KpiSampleType.py

-# Copyright 2021-2023 H2020 TeraFlow (https://www.teraflow-h2020.eu/)
-#
-# 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 functools
-import enum
-from common.proto.kpi_sample_types_pb2 import KpiSampleType
-from .Tools import grpc_to_enum
-
-class ORM_KpiSampleTypeEnum(enum.Enum):
-    UNKNOWN             = KpiSampleType.KPISAMPLETYPE_UNKNOWN
-    PACKETS_TRANSMITTED = KpiSampleType.KPISAMPLETYPE_PACKETS_TRANSMITTED
-    PACKETS_RECEIVED    = KpiSampleType.KPISAMPLETYPE_PACKETS_RECEIVED
-    BYTES_TRANSMITTED   = KpiSampleType.KPISAMPLETYPE_BYTES_TRANSMITTED
-    BYTES_RECEIVED      = KpiSampleType.KPISAMPLETYPE_BYTES_RECEIVED
-
-grpc_to_enum__kpi_sample_type = functools.partial(
-    grpc_to_enum, KpiSampleType, ORM_KpiSampleTypeEnum)

src/context/service/database/RelationModels.py

@@ -13,39 +13,39 @@
 # limitations under the License.
 
 import logging
-from sqlalchemy import Column, ForeignKey
+from sqlalchemy import Column, ForeignKey, ForeignKeyConstraint
 from sqlalchemy.dialects.postgresql import UUID
-from context.service.database._Base import Base
+from sqlalchemy.orm import relationship
+from context.service.database._Base import _Base
 
 LOGGER = logging.getLogger(__name__)
-#
-# class ConnectionSubServiceModel(Model): # pylint: disable=abstract-method
+
+# class ConnectionSubServiceModel(Model):
 #     pk = PrimaryKeyField()
 #     connection_fk = ForeignKeyField(ConnectionModel)
 #     sub_service_fk = ForeignKeyField(ServiceModel)
 #
-class LinkEndPointModel(Base): # pylint: disable=abstract-method
-    __tablename__ = 'LinkEndPoint'
-    # uuid = Column(UUID(as_uuid=False), primary_key=True, unique=True)
-    link_uuid = Column(UUID(as_uuid=False), ForeignKey("Link.link_uuid"))
-    endpoint_uuid = Column(UUID(as_uuid=False), ForeignKey("EndPoint.endpoint_uuid"), primary_key=True)
-
-    @staticmethod
-    def main_pk_name():
-        return 'endpoint_uuid'
-
+#class LinkEndPointModel(Base):
+#    __tablename__ = 'LinkEndPoint'
+#    # uuid = Column(UUID(as_uuid=False), primary_key=True, unique=True)
+#    link_uuid = Column(UUID(as_uuid=False), ForeignKey("Link.link_uuid"))
+#    endpoint_uuid = Column(UUID(as_uuid=False), ForeignKey("EndPoint.endpoint_uuid"), primary_key=True)
 #
-# class ServiceEndPointModel(Model): # pylint: disable=abstract-method
+#    @staticmethod
+#    def main_pk_name():
+#        return 'endpoint_uuid'
+#
+# class ServiceEndPointModel(Model):
 #     pk = PrimaryKeyField()
 #     service_fk = ForeignKeyField(ServiceModel)
 #     endpoint_fk = ForeignKeyField(EndPointModel)
 #
-# class SliceEndPointModel(Model): # pylint: disable=abstract-method
+# class SliceEndPointModel(Model):
 #     pk = PrimaryKeyField()
 #     slice_fk = ForeignKeyField(SliceModel)
 #     endpoint_fk = ForeignKeyField(EndPointModel)
 #
-# class SliceServiceModel(Model): # pylint: disable=abstract-method
+# class SliceServiceModel(Model):
 #     pk = PrimaryKeyField()
 #     slice_fk = ForeignKeyField(SliceModel)
 #     service_fk = ForeignKeyField(ServiceMo# pylint: disable=abstract-method
@@ -55,26 +55,32 @@ class LinkEndPointModel(Base): # pylint: disable=abstract-method
 #     endpoint_uuid = Column(UUID(as_uuid=False), ForeignKey("EndPoint.endpoint_uuid"))
 #del)
 #
-# class SliceSubSliceModel(Model): # pylint: disable=abstract-method
+# class SliceSubSliceModel(Model):
 #     pk = PrimaryKeyField()
 #     slice_fk = ForeignKeyField(SliceModel)
 #     sub_slice_fk = ForeignKeyField(SliceModel)
 
-class TopologyDeviceModel(Base): # pylint: disable=abstract-method
-    __tablename__ = 'TopologyDevice'
-    # uuid = Column(UUID(as_uuid=False), primary_key=True, unique=True)
-    topology_uuid = Column(UUID(as_uuid=False), ForeignKey("Topology.topology_uuid"))
-    device_uuid = Column(UUID(as_uuid=False), ForeignKey("Device.device_uuid"), primary_key=True)
+class TopologyDeviceModel(_Base):
+    __tablename__ = 'topology_device'
+    context_uuid  = Column(UUID(as_uuid=False), primary_key=True)
+    topology_uuid = Column(UUID(as_uuid=False), primary_key=True)
+    device_uuid   = Column(UUID(as_uuid=False), primary_key=True)
 
-    @staticmethod
-    def main_pk_name():
-        return 'device_uuid'
-#
-class TopologyLinkModel(Base): # pylint: disable=abstract-method
-    __tablename__ = 'TopologyLink'
-    topology_uuid = Column(UUID(as_uuid=False), ForeignKey("Topology.topology_uuid"))
-    link_uuid = Column(UUID(as_uuid=False), ForeignKey("Link.link_uuid"), primary_key=True)
+    topologies = relationship('TopologyModel', back_populates='topology_device')
+    devices    = relationship('DeviceModel', back_populates='topology_device')
+
+    __table_args__ = (
+        ForeignKeyConstraint(
+            ['context_uuid', 'topology_uuid'],
+            ['topology.context_uuid', 'topology.topology_uuid'],
+            ondelete='CASCADE'),
+        ForeignKeyConstraint(
+            ['device_uuid'],
+            ['device.device_uuid'],
+            ondelete='CASCADE'),
+    )
 
-    @staticmethod
-    def main_pk_name():
-        return 'link_uuid'
\ No newline at end of file
+#class TopologyLinkModel(Base):
+#    __tablename__ = 'TopologyLink'
+#    topology_uuid = Column(UUID(as_uuid=False), ForeignKey("Topology.topology_uuid"))
+#    link_uuid = Column(UUID(as_uuid=False), ForeignKey("Link.link_uuid"), primary_key=True)

src/context/service/database/TopologyModel.py

@@ -12,40 +12,35 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import logging #, operator
-from typing import Dict #, List
-from sqlalchemy import Column, ForeignKey
+from typing import Dict
+from sqlalchemy import Column, Float, ForeignKey, String
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import relationship
 from ._Base import _Base
 
-LOGGER = logging.getLogger(__name__)
-
 class TopologyModel(_Base):
-    __tablename__ = 'Topology'
+    __tablename__ = 'topology'
     context_uuid = Column(UUID(as_uuid=False), ForeignKey('context.context_uuid'), primary_key=True)
     topology_uuid = Column(UUID(as_uuid=False), primary_key=True, unique=True)
+    topology_name = Column(String(), nullable=False)
+    created_at   = Column(Float)
 
     # Relationships
-    context = relationship('ContextModel', back_populates='topology')
+    context         = relationship('ContextModel', back_populates='topology')
+    topology_device = relationship('TopologyDeviceModel', back_populates='topologies')
+    #topology_link   = relationship('TopologyLinkModel', back_populates='topology')
+    endpoints       = relationship('EndPointModel', back_populates='topology')
 
     def dump_id(self) -> Dict:
-        context_id = self.context.dump_id()
         return {
-            'context_id': context_id,
+            'context_id': self.context.dump_id(),
             'topology_uuid': {'uuid': self.topology_uuid},
         }
 
-    #@staticmethod
-    #def main_pk_name() -> str:
-    #    return 'topology_uuid'
-
     def dump(self) -> Dict:
-        # pylint: disable=arguments-differ
-        result = {'topology_id': self.dump_id()}
-        # params: , devices=None, links=None
-        #if devices:
-        #    result['device_ids'] = [device.dump_id() for device in devices]
-        #if links:
-        #    result['link_ids'] = [link.dump_id() for link in links]
-        return result
+        return {
+            'topology_id': self.dump_id(),
+            'name'       : self.topology_name,
+            'device_ids' : [{'device_uuid': {'uuid': td.device_uuid}} for td in self.topology_device],
+            #'link_ids'   : [{'link_uuid'  : {'uuid': td.link_uuid  }} for td in self.topology_link  ],
+        }

src/context/service/database/__init__.py

@@ -11,7 +11,3 @@
 # 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.
-
-from ._Base import _Base, rebuild_database
-from .ContextModel import ContextModel
-from .TopologyModel import TopologyModel