proto/telemetry_frontend.proto

@@ -16,10 +16,10 @@ message CollectorId {
 }
 
 message Collector {
-  CollectorId collector_id = 1; // The Collector ID
-  kpi_manager.KpiId kpi_id = 2; // The KPI Id to be associated to the collected samples
-  float duration_s         = 3; // Terminate data collection after duration[seconds]; duration==0 means indefinitely
-  float interval_s         = 4; // Interval between collected samples
+  CollectorId collector_id = 1;     // The Collector ID
+  kpi_manager.KpiId kpi_id = 2;     // The KPI Id to be associated to the collected samples
+  float duration_s         = 3;     // Terminate data collection after duration[seconds]; duration==0 means indefinitely
+  float interval_s         = 4;     // Interval between collected samples
 }
 
 message CollectorFilter {

src/common/Constants.py

@@ -44,6 +44,7 @@ class ServiceNameEnum(Enum):
     POLICY                 = 'policy'
     MONITORING             = 'monitoring'
     KPIMANAGER             = 'kpiManager'
+    TELEMETRYFRONTEND      = 'telemetryfrontend'
     DLT                    = 'dlt'
     NBI                    = 'nbi'
     CYBERSECURITY          = 'cybersecurity'
@@ -75,6 +76,7 @@ DEFAULT_SERVICE_GRPC_PORTS = {
     ServiceNameEnum.POLICY                 .value :  6060,
     ServiceNameEnum.MONITORING             .value :  7070,
     ServiceNameEnum.KPIMANAGER             .value :  7071,
+    ServiceNameEnum.TELEMETRYFRONTEND      .value :  7072,
     ServiceNameEnum.DLT                    .value :  8080,
     ServiceNameEnum.NBI                    .value :  9090,
     ServiceNameEnum.L3_CAD                 .value : 10001,

src/kpi_manager/client/KpiManagerClient.py

@@ -16,14 +16,14 @@ import grpc, logging
 from common.Constants import ServiceNameEnum
 from common.Settings import get_service_host, get_service_port_grpc
 
-from common.tools.client.RetryDecorator import retry, delay_exponential
-from common.tools.grpc.Tools import grpc_message_to_json_string
 from common.proto.context_pb2 import Empty
-from common.proto.kpi_manager_pb2 import KpiId, KpiDescriptor, KpiDescriptorFilter, KpiDescriptorList
+from common.tools.grpc.Tools import grpc_message_to_json_string
+from common.tools.client.RetryDecorator import retry, delay_exponential
 from common.proto.kpi_manager_pb2_grpc import KpiManagerServiceStub
+from common.proto.kpi_manager_pb2 import KpiId, KpiDescriptor, KpiDescriptorFilter, KpiDescriptorList
 
 LOGGER = logging.getLogger(__name__)
-MAX_RETRIES = 15
+MAX_RETRIES = 10
 DELAY_FUNCTION = delay_exponential(initial=0.01, increment=2.0, maximum=5.0)
 RETRY_DECORATOR = retry(max_retries=MAX_RETRIES, delay_function=DELAY_FUNCTION, prepare_method_name='connect')
 

src/telemetry_frontend/__init__.py

+...

src/telemetry_frontend/client/TelemetryFrontendClient.py

+# Copyright 2022-2023 ETSI TeraFlowSDN - TFS OSG (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 common.Constants import ServiceNameEnum
+from common.Settings import get_service_host, get_service_port_grpc
+
+from common.proto.context_pb2 import Empty
+from common.tools.grpc.Tools import grpc_message_to_json_string
+from common.tools.client.RetryDecorator import retry, delay_exponential
+from common.proto.telemetry_frontend_pb2_grpc import TelemetryFrontendServiceStub
+from comment.proto.telemetry_frontend_pb2 import Collector, CollectorId, CollectorFilter, CollectorList
+
+LOGGER = logging.getLogger(__name__)
+MAX_RETRIES = 10
+DELAY_FUNCTION = delay_exponential(initial=0.01, increment=2.0, maximum=5.0)
+RETRY_DECORATOR = retry(max_retries=MAX_RETRIES, delay_function=DELAY_FUNCTION, prepare_method_name='connect')
+
+class TelemetryFrontendClient:
+    def __init__(self, host=None, port=None):
+        if not host: host = get_service_host(ServiceNameEnum.TELEMETRYFRONTEND)
+        if not port: port = get_service_port_grpc(ServiceNameEnum.TELEMETRYFRONTEND)
+        self.endpoint = '{:s}:{:s}'.format(str(host), str(port))
+        LOGGER.debug('Creating channel to {:s}...'.format(str(self.endpoint)))
+        self.channel = None
+        self.stub = None
+        self.connect()
+        LOGGER.debug('Channel created')        
+
+    def connect(self):
+        self.channel = grpc.insecure_channel(self.endpoint)
+        self.stub = TelemetryFrontendServiceStub(self.channel)
+
+    def close(self):
+        if self.channel is not None: self.channel.close()
+        self.channel = None
+        self.stub = None
+
+    @RETRY_DECORATOR
+    def StartCollector(self, request : Collector) --> CollectorId:
+        LOGGER.debug('StartCollector: {:s}'.format(grpc_message_to_json_string(request)))
+        response = self.stub.StartCollector(request)
+        LOGGER.debug('StartCollector result: {:s}'.format(grpc_message_to_json_string(response)))
+        return response
+
+    @RETRY_DECORATOR
+    def StopCollector(self, request : CollectorId) --> Empty:
+        LOGGER.debug('StopCollector: {:s}'.format(grpc_message_to_json_string(request)))
+        response = self.stub.StopCollector(request)
+        LOGGER.debug('StopCollector result: {:s}'.format(grpc_message_to_json_string(response)))
+        return response
+
+    @RETRY_DECORATOR
+    def SelectCollectors(self, request : CollectorFilter) --> CollectorList:
+        LOGGER.debug('SelectCollectors: {:s}'.format(grpc_message_to_json_string(request)))
+        response = self.stub.SelectCollectors(request)
+        LOGGER.debug('SelectCollectors result: {:s}'.format(grpc_message_to_json_string(response)))
+        return response
+

src/telemetry_frontend/client/__init__.py

+# Copyright 2022-2023 ETSI TeraFlowSDN - TFS OSG (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.
+