Revert "Merge branch 'feat/context-service' into 'master'"

This reverts merge request !3

.gitignore

@@ -49,7 +49,6 @@ coverage.xml
 *.py,cover
 .hypothesis/
 .pytest_cache/
-.benchmarks/
 cover/
 
 # Translations
@@ -86,7 +85,7 @@ ipython_config.py
 # pyenv
 #   For a library or package, you might want to ignore these files since the code is
 #   intended to run in multiple environments; otherwise, check them in:
-.python-version
+# .python-version
 
 # pipenv
 #   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
@@ -118,9 +117,6 @@ venv.bak/
 .spyderproject
 .spyproject
 
-# VSCode project settings
-.vscode/
-
 # Rope project settings
 .ropeproject
 

manifests/contextservice.yaml

-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: contextservice
-spec:
-  selector:
-    matchLabels:
-      app: contextservice
-  template:
-    metadata:
-      labels:
-        app: contextservice
-    spec:
-      terminationGracePeriodSeconds: 5
-      containers:
-      - name: server
-        image: context_service:develop
-        imagePullPolicy: Never
-        ports:
-        - containerPort: 7070
-        env:
-        - name: DB_ENGINE
-          value: "redis"
-        - name: REDISDB_DATABASE_ID
-          value: "0"
-        - name: LOG_LEVEL
-          value: "DEBUG"
-        readinessProbe:
-          exec:
-            command: ["/bin/grpc_health_probe", "-addr=:7070"]
-        livenessProbe:
-          exec:
-            command: ["/bin/grpc_health_probe", "-addr=:7070"]
-        resources:
-          requests:
-            cpu: 250m
-            memory: 512Mi
-          limits:
-            cpu: 700m
-            memory: 1024Mi
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: contextservice
-spec:
-  type: ClusterIP
-  selector:
-    app: contextservice
-  ports:
-  - name: grpc
-    port: 7070
-    targetPort: 7070

manifests/redisdb.yaml

----
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: redisdb
-spec:
-  selector:
-    matchLabels:
-      app: redisdb
-  replicas: 1
-  template:
-    metadata:
-      labels:
-        app: redisdb
-        version: v1
-    spec:
-      containers:
-      - name: redisdb
-        image: redis:6.2
-        ports:
-        - containerPort: 6379
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: redisdb
-  labels:
-    app: redisdb
-spec:
-  type: ClusterIP
-  selector:
-    app: redisdb
-  ports:
-  - name: redisdb
-    protocol: TCP
-    port: 6379
-    targetPort: 6379
----

src/build.sh

 #!/usr/bin/env bash
 
-# Make folder containing the script the root folder for its execution
-cd $(dirname $0)
-
-echo "BUILD context"
-context/genproto.sh
-docker build -t "context_service:develop" -f context/Dockerfile_develop --quiet .
-docker build -t "context_service:test" -f context/Dockerfile_test --quiet .
-
 cd monitoring
 ./genproto.sh
 cd ..
@@ -15,5 +7,3 @@ cd ..
 echo "BUILD monitoring"
 docker build -t "monitoring:dockerfile" -f monitoring/Dockerfile .
 
-echo "Prune unused images"
-docker image prune --force

src/common/database/inmemory/InMemoryDatabase.py

-import logging, json
-
-LOGGER = logging.getLogger(__name__)
-
-FILEPATH = 'data/topo_nsfnet.json'
-
-class InMemoryDatabase:
-    def __init__(self, filepath=FILEPATH, **parameters):
-        with open(filepath, 'r') as f:
-            self.json_topology = json.loads(f.read())
-
-    def get_topology(self):
-        return(self.json_topology)

src/common/database/redis/RedisDatabase.py

-import logging, json, os, redis
-#from .context_api.Context import Context
-
-LOGGER = logging.getLogger(__name__)
-
-# 60.0 seconds (aprox) in incremental steps from 0.002 till 29.99 seconds
-RETRY_DELAY_INITIAL = 0.002
-RETRY_DELAY_INCREMENT = 1.831
-MAX_RETRIES = 15
-
-URL_TEMPLATE = 'redis://{host}:{port}/{dbid}'
-
-FILEPATH = 'data/topo_nsfnet.json'
-
-class RedisDatabase:
-    def __init__(self, **parameters):
-        host = os.environ.get('REDISDB_SERVICE_HOST')
-        if(host is None): raise Exception('EnvironmentVariable(REDISDB_SERVICE_HOST) not found')
-        port = os.environ.get('REDISDB_SERVICE_PORT')
-        if(port is None): raise Exception('EnvironmentVariable(REDISDB_SERVICE_PORT) not found')
-        dbid = os.environ.get('REDISDB_DATABASE_ID')
-        if(dbid is None): raise Exception('EnvironmentVariable(REDISDB_DATABASE_ID) not found')
-        self.redis_url = URL_TEMPLATE.format(host=host, port=port, dbid=dbid)
-        self.handler = None
-        self.connect() # initialize self.handler and connect to server
-
-    def connect(self):
-        self.handler = redis.Redis.from_url(self.redis_url)
-
-    def close(self):
-        if(self.handler is not None): del self.handler
-        self.handler = None
-
-    def get_topology(self):
-        str_topology = self.handler.get('topology')
-        if(str_topology is None):
-            with open(FILEPATH, 'r') as f:
-                json_topology = json.loads(f.read())
-            str_topology = json.dumps(json_topology)
-            self.handler.setnx('topology', str_topology)
-            json_topology['source'] = 'redis missing, loaded from file'
-        else:
-            json_topology = json.loads(str_topology)
-            json_topology['source'] = 'redis found!'
-        return(json_topology)
-
-    #def __getattr__(self, method_name):
-    #    # Expose all methods in the database engine as owned
-    #    def method(*args, **kwargs):
-    #        num_try, delay = 1, RETRY_DELAY_INITIAL
-    #        while num_try <= MAX_RETRIES:
-    #            try:
-    #                handler_method = getattr(self.handler, method_name, None)
-    #                if handler_method is None: raise Exception('Redis does not support method({})'.format(method_name))
-    #                return handler_method(*args, **kwargs)
-    #            except ConnectionError: # as e:
-    #                #if('Channel is closed' not in str(e)): raise
-    #                self.connect() # Try to reconnect
-    #                time.sleep(delay)
-    #                num_try, delay = num_try + 1, delay * RETRY_DELAY_INCREMENT
-    #        raise Exception('Unable to reconnect to Redis after {}'.format(MAX_RETRIES))
-    #    return(method)

src/common/tools/RetryDecorator.py

-# This decorator re-executes the decorated function when it raises an exception. It enables to control the exception
-# classes that should trigger the re-execution, the maximum number of retries, the delay between retries, and set the
-# execution of a preparation method before every retry. The delay is specfied by means of user-customizable functions.
-#
-# Delay functions should return a compute function with a single parameter, the number of retry. For instance:
-#   delay_linear(initial=0, increment=0):
-#       adds a constant delay of 0 seconds between retries
-#   delay_linear(initial=1, increment=0):
-#       adds a constant delay of 1 second between retries
-#   delay_linear(initial=1, increment=0.5, maximum=10):
-#       adds an increasing delay between retries, starting with 1 second, and incresing it linearly by steps of 0.5
-#       seconds, up to 10 seconds, every time an exception is caught within the current execution.
-#       E.g. 1.0, 1.5, 2.0, 2.5, ..., 10.0, 10.0, 10.0, ...
-#   delay_exponential(initial=1, increment=1): adds a constant delay of 1 second between retries
-#   delay_exponential(initial=1, increment=2, maximum=10):
-#       adds an increasing delay between retries, starting with 1 second, and incresing it exponentially by steps of 2
-#       seconds, up to 10 seconds,  every time an exception is caught within the current execution.
-#       E.g. 1.0, 2.0, 4.0, 8.0, 10.0, 10.0, 10.0, ...
-
-# Arguments:
-# - exceptions: defines the set of exception classes to be catched for reconnection. Others are re-raised.
-#   By default all exceptions are re-raised.
-# - max_retries: defines the maximum number of retries acceptable before giving up. By default, 0 retries are executed.
-# - delay_function: defines the delay computation method to be used. By default, delay_linear with a fixed delay of 0.1
-#   seconds is used.
-# - prepare_method_name: if not None, defines the name of the preparation method within the same class to be executed
-#   when an exception in exceptions is caught, and before running the next retry. By default, is None, meaning that no
-#   method is executed.
-# - prepare_method_args: defines the list of positional arguments to be provided to the preparation method. If no
-#   preparation method is specified, the argument is silently ignored. By default, an empty list is defined.
-# - prepare_method_kwargs: defines the dictionary of keyword arguments to be provided to the preparation method. If no
-#   preparation method is specified, the argument is silently ignored. By default, an empty dictionary is defined.
-
-import time
-
-def delay_linear(initial=0, increment=0, maximum=None):
-    def compute(num_try):
-        delay = initial + (num_try - 1) * increment
-        if maximum is not None: delay = max(delay, maximum)
-        return delay
-    return compute
-
-def delay_exponential(initial=1, increment=1, maximum=None):
-    def compute(num_try):
-        delay = initial * (num_try - 1) ^ increment
-        if maximum is not None: delay = max(delay, maximum)
-        return delay
-    return compute
-
-def retry(exceptions=set(), max_retries=0, delay_function=delay_linear(initial=0, increment=0),
-          prepare_method_name=None, prepare_method_args=[], prepare_method_kwargs={}):
-    def _reconnect(func):
-        def wrapper(self, *args, **kwargs):
-            if prepare_method_name is not None:
-                prepare_method = getattr(self, prepare_method_name, None)
-                if prepare_method is None: raise Exception('Prepare Method ({}) not found'.format(prepare_method_name))
-            num_try, given_up = 0, False
-            while not given_up:
-                try:
-                    return func(self, *args, **kwargs)
-                except Exception as e:
-                    if not isinstance(e, tuple(exceptions)): raise
-
-                    num_try += 1
-                    given_up = num_try > max_retries
-                    if given_up: raise Exception('Giving up... {} tries failed'.format(max_retries))
-                    if delay_function is not None: time.sleep(delay_function(num_try))
-
-                    if prepare_method_name is not None: prepare_method(*prepare_method_args, **prepare_method_kwargs)
-        return(wrapper)
-    return(_reconnect)

src/context/Config.py

-import logging
-
-# gRPC settings
-SERVICE_PORT = 7070
-MAX_WORKERS  = 10
-GRACE_PERIOD = 60
-LOG_LEVEL    = logging.WARNING
-
-# Prometheus settings
-METRICS_PORT = 8080

src/context/Dockerfile_develop

-FROM python:3-slim
-
-# Install dependencies
-RUN apt-get --yes --quiet --quiet update && \
-    apt-get --yes --quiet --quiet install wget g++ && \
-    rm -rf /var/lib/apt/lists/*
-
-# Set Python to show logs as they occur
-ENV PYTHONUNBUFFERED=0
-
-# Download the gRPC health probe
-RUN GRPC_HEALTH_PROBE_VERSION=v0.2.0 && \
-    wget -qO/bin/grpc_health_probe https://github.com/grpc-ecosystem/grpc-health-probe/releases/download/${GRPC_HEALTH_PROBE_VERSION}/grpc_health_probe-linux-amd64 && \
-    chmod +x /bin/grpc_health_probe
-
-# Get generic Python packages
-RUN python3 -m pip install --upgrade pip setuptools wheel pip-tools
-
-# Set working directory
-WORKDIR /var/teraflow
-
-# Create module sub-folders
-RUN mkdir -p /var/teraflow/context
-
-# Get Python packages per module
-COPY context/requirements.in context/requirements.in
-RUN pip-compile --output-file=context/requirements.txt context/requirements.in
-RUN python3 -m pip install -r context/requirements.in
-
-# Add files into working directory
-COPY common/. common
-COPY context/. context
-
-# Start context service
-ENTRYPOINT ["python", "-m", "context.service"]

src/context/Dockerfile_test

-FROM context_service:develop
-
-# Run integration tests
-ENTRYPOINT ["pytest", "-v", "--log-level=DEBUG", "context/tests/test_integration.py"]

src/context/client/ContextClient.py

-import grpc, logging
-from google.protobuf.json_format import MessageToDict
-from common.tools.RetryDecorator import retry, delay_exponential
-from context.proto.context_pb2_grpc import ContextServiceStub
-
-LOGGER = logging.getLogger(__name__)
-MAX_RETRIES = 15
-DELAY_FUNCTION = delay_exponential(initial=0.01, increment=2.0, maximum=5.0)
-
-class ContextClient:
-    def __init__(self, address, port):
-        self.endpoint = '{}:{}'.format(address, port)
-        LOGGER.debug('Creating channel to {}...'.format(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 = ContextServiceStub(self.channel)
-
-    def close(self):
-        if(self.channel is not None): self.channel.close()
-        self.channel = None
-        self.stub = None
-
-    @retry(exceptions=set(), max_retries=MAX_RETRIES, delay_function=DELAY_FUNCTION, prepare_method_name='connect')
-    def GetTopology(self, request):
-        LOGGER.debug('GetTopology request: {}'.format(request))
-        response = self.stub.GetTopology(request)
-        LOGGER.debug('GetTopology result: {}'.format(response))
-        return MessageToDict(
-            response, including_default_value_fields=True, preserving_proto_field_name=True,
-            use_integers_for_enums=False)

src/context/genproto.sh

-#!/bin/bash -eu
-#
-# Copyright 2018 Google LLC
-#
-# 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.
-
-#!/bin/bash -e
-
-# Make folder containing the script the root folder for its execution
-cd $(dirname $0)
-
-rm -rf proto/*.py
-touch proto/__init__.py
-
-python -m grpc_tools.protoc -I../../proto --python_out=proto --grpc_python_out=proto context.proto
-
-sed -i -E 's/(import\ .*)_pb2/from context.proto \1_pb2/g' proto/context_pb2.py
-sed -i -E 's/(import\ .*)_pb2/from context.proto \1_pb2/g' proto/context_pb2_grpc.py

src/context/proto/context_pb2.py

-# -*- coding: utf-8 -*-
-# Generated by the protocol buffer compiler.  DO NOT EDIT!
-# source: context.proto
-"""Generated protocol buffer code."""
-from google.protobuf.internal import enum_type_wrapper
-from google.protobuf import descriptor as _descriptor
-from google.protobuf import message as _message
-from google.protobuf import reflection as _reflection
-from google.protobuf import symbol_database as _symbol_database
-# @@protoc_insertion_point(imports)
-
-_sym_db = _symbol_database.Default()
-
-
-
-
-DESCRIPTOR = _descriptor.FileDescriptor(
-  name='context.proto',
-  package='context',
-  syntax='proto3',
-  serialized_options=None,
-  create_key=_descriptor._internal_create_key,
-  serialized_pb=b'\n\rcontext.proto\x12\x07\x63ontext\"\x07\n\x05\x45mpty\"{\n\x07\x43ontext\x12%\n\tcontextId\x18\x01 \x01(\x0b\x32\x12.context.ContextId\x12\x1f\n\x04topo\x18\x02 \x01(\x0b\x32\x11.context.Topology\x12(\n\x03\x63tl\x18\x03 \x01(\x0b\x32\x1b.context.TeraFlowController\"/\n\tContextId\x12\"\n\x0b\x63ontextUuid\x18\x01 \x01(\x0b\x32\r.context.Uuid\"m\n\x08Topology\x12#\n\x06topoId\x18\x02 \x01(\x0b\x32\x13.context.TopologyId\x12\x1f\n\x06\x64\x65vice\x18\x03 \x03(\x0b\x32\x0f.context.Device\x12\x1b\n\x04link\x18\x04 \x03(\x0b\x32\r.context.Link\"1\n\x04Link\x12)\n\x0c\x65ndpointList\x18\x01 \x03(\x0b\x32\x13.context.EndPointId\"R\n\nTopologyId\x12%\n\tcontextId\x18\x01 \x01(\x0b\x32\x12.context.ContextId\x12\x1d\n\x06topoId\x18\x02 \x01(\x0b\x32\r.context.Uuid\"?\n\nConstraint\x12\x17\n\x0f\x63onstraint_type\x18\x01 \x01(\t\x12\x18\n\x10\x63onstraint_value\x18\x02 \x01(\t\"\xda\x01\n\x06\x44\x65vice\x12$\n\tdevice_id\x18\x01 \x01(\x0b\x32\x11.context.DeviceId\x12\x13\n\x0b\x64\x65vice_type\x18\x02 \x01(\t\x12,\n\rdevice_config\x18\x03 \x01(\x0b\x32\x15.context.DeviceConfig\x12>\n\x14\x64\x65vOperationalStatus\x18\x04 \x01(\x0e\x32 .context.DeviceOperationalStatus\x12\'\n\x0c\x65ndpointList\x18\x05 \x03(\x0b\x32\x11.context.EndPoint\"%\n\x0c\x44\x65viceConfig\x12\x15\n\rdevice_config\x18\x01 \x01(\t\"C\n\x08\x45ndPoint\x12$\n\x07port_id\x18\x01 \x01(\x0b\x32\x13.context.EndPointId\x12\x11\n\tport_type\x18\x02 \x01(\t\"t\n\nEndPointId\x12#\n\x06topoId\x18\x01 \x01(\x0b\x32\x13.context.TopologyId\x12!\n\x06\x64\x65v_id\x18\x02 \x01(\x0b\x32\x11.context.DeviceId\x12\x1e\n\x07port_id\x18\x03 \x01(\x0b\x32\r.context.Uuid\",\n\x08\x44\x65viceId\x12 \n\tdevice_id\x18\x01 \x01(\x0b\x32\r.context.Uuid\"\x14\n\x04Uuid\x12\x0c\n\x04uuid\x18\x01 \x01(\t\"K\n\x12TeraFlowController\x12\"\n\x06\x63tl_id\x18\x01 \x01(\x0b\x32\x12.context.ContextId\x12\x11\n\tipaddress\x18\x02 \x01(\t\"Q\n\x14\x41uthenticationResult\x12\"\n\x06\x63tl_id\x18\x01 \x01(\x0b\x32\x12.context.ContextId\x12\x15\n\rauthenticated\x18\x02 \x01(\x08*4\n\x17\x44\x65viceOperationalStatus\x12\x0c\n\x08\x44ISABLED\x10\x00\x12\x0b\n\x07\x45NABLED\x10\x01\x32\x44\n\x0e\x43ontextService\x12\x32\n\x0bGetTopology\x12\x0e.context.Empty\x1a\x11.context.Topology\"\x00\x62\x06proto3'
-)
-
-_DEVICEOPERATIONALSTATUS = _descriptor.EnumDescriptor(
-  name='DeviceOperationalStatus',
-  full_name='context.DeviceOperationalStatus',
-  filename=None,
-  file=DESCRIPTOR,
-  create_key=_descriptor._internal_create_key,
-  values=[
-    _descriptor.EnumValueDescriptor(
-      name='DISABLED', index=0, number=0,
-      serialized_options=None,
-      type=None,
-      create_key=_descriptor._internal_create_key),
-    _descriptor.EnumValueDescriptor(
-      name='ENABLED', index=1, number=1,
-      serialized_options=None,
-      type=None,
-      create_key=_descriptor._internal_create_key),
-  ],
-  containing_type=None,
-  serialized_options=None,
-  serialized_start=1195,
-  serialized_end=1247,
-)
-_sym_db.RegisterEnumDescriptor(_DEVICEOPERATIONALSTATUS)
-
-DeviceOperationalStatus = enum_type_wrapper.EnumTypeWrapper(_DEVICEOPERATIONALSTATUS)
-DISABLED = 0
-ENABLED = 1
-
-
-
-_EMPTY = _descriptor.Descriptor(
-  name='Empty',
-  full_name='context.Empty',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=26,
-  serialized_end=33,
-)
-
-
-_CONTEXT = _descriptor.Descriptor(
-  name='Context',
-  full_name='context.Context',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='contextId', full_name='context.Context.contextId', index=0,
-      number=1, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='topo', full_name='context.Context.topo', index=1,
-      number=2, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='ctl', full_name='context.Context.ctl', index=2,
-      number=3, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=35,
-  serialized_end=158,
-)
-
-
-_CONTEXTID = _descriptor.Descriptor(
-  name='ContextId',
-  full_name='context.ContextId',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='contextUuid', full_name='context.ContextId.contextUuid', index=0,
-      number=1, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=160,
-  serialized_end=207,
-)
-
-
-_TOPOLOGY = _descriptor.Descriptor(
-  name='Topology',
-  full_name='context.Topology',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='topoId', full_name='context.Topology.topoId', index=0,
-      number=2, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='device', full_name='context.Topology.device', index=1,
-      number=3, type=11, cpp_type=10, label=3,
-      has_default_value=False, default_value=[],
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='link', full_name='context.Topology.link', index=2,
-      number=4, type=11, cpp_type=10, label=3,
-      has_default_value=False, default_value=[],
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=209,
-  serialized_end=318,
-)
-
-
-_LINK = _descriptor.Descriptor(
-  name='Link',
-  full_name='context.Link',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='endpointList', full_name='context.Link.endpointList', index=0,
-      number=1, type=11, cpp_type=10, label=3,
-      has_default_value=False, default_value=[],
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=320,
-  serialized_end=369,
-)
-
-
-_TOPOLOGYID = _descriptor.Descriptor(
-  name='TopologyId',
-  full_name='context.TopologyId',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='contextId', full_name='context.TopologyId.contextId', index=0,
-      number=1, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='topoId', full_name='context.TopologyId.topoId', index=1,
-      number=2, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=371,
-  serialized_end=453,
-)
-
-
-_CONSTRAINT = _descriptor.Descriptor(
-  name='Constraint',
-  full_name='context.Constraint',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='constraint_type', full_name='context.Constraint.constraint_type', index=0,
-      number=1, type=9, cpp_type=9, label=1,
-      has_default_value=False, default_value=b"".decode('utf-8'),
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='constraint_value', full_name='context.Constraint.constraint_value', index=1,
-      number=2, type=9, cpp_type=9, label=1,
-      has_default_value=False, default_value=b"".decode('utf-8'),
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=455,
-  serialized_end=518,
-)
-
-
-_DEVICE = _descriptor.Descriptor(
-  name='Device',
-  full_name='context.Device',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='device_id', full_name='context.Device.device_id', index=0,
-      number=1, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='device_type', full_name='context.Device.device_type', index=1,
-      number=2, type=9, cpp_type=9, label=1,
-      has_default_value=False, default_value=b"".decode('utf-8'),
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='device_config', full_name='context.Device.device_config', index=2,
-      number=3, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='devOperationalStatus', full_name='context.Device.devOperationalStatus', index=3,
-      number=4, type=14, cpp_type=8, label=1,
-      has_default_value=False, default_value=0,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='endpointList', full_name='context.Device.endpointList', index=4,
-      number=5, type=11, cpp_type=10, label=3,
-      has_default_value=False, default_value=[],
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=521,
-  serialized_end=739,
-)
-
-
-_DEVICECONFIG = _descriptor.Descriptor(
-  name='DeviceConfig',
-  full_name='context.DeviceConfig',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='device_config', full_name='context.DeviceConfig.device_config', index=0,
-      number=1, type=9, cpp_type=9, label=1,
-      has_default_value=False, default_value=b"".decode('utf-8'),
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=741,
-  serialized_end=778,
-)
-
-
-_ENDPOINT = _descriptor.Descriptor(
-  name='EndPoint',
-  full_name='context.EndPoint',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='port_id', full_name='context.EndPoint.port_id', index=0,
-      number=1, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='port_type', full_name='context.EndPoint.port_type', index=1,
-      number=2, type=9, cpp_type=9, label=1,
-      has_default_value=False, default_value=b"".decode('utf-8'),
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=780,
-  serialized_end=847,
-)
-
-
-_ENDPOINTID = _descriptor.Descriptor(
-  name='EndPointId',
-  full_name='context.EndPointId',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='topoId', full_name='context.EndPointId.topoId', index=0,
-      number=1, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='dev_id', full_name='context.EndPointId.dev_id', index=1,
-      number=2, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='port_id', full_name='context.EndPointId.port_id', index=2,
-      number=3, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=849,
-  serialized_end=965,
-)
-
-
-_DEVICEID = _descriptor.Descriptor(
-  name='DeviceId',
-  full_name='context.DeviceId',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='device_id', full_name='context.DeviceId.device_id', index=0,
-      number=1, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=967,
-  serialized_end=1011,
-)
-
-
-_UUID = _descriptor.Descriptor(
-  name='Uuid',
-  full_name='context.Uuid',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='uuid', full_name='context.Uuid.uuid', index=0,
-      number=1, type=9, cpp_type=9, label=1,
-      has_default_value=False, default_value=b"".decode('utf-8'),
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=1013,
-  serialized_end=1033,
-)
-
-
-_TERAFLOWCONTROLLER = _descriptor.Descriptor(
-  name='TeraFlowController',
-  full_name='context.TeraFlowController',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='ctl_id', full_name='context.TeraFlowController.ctl_id', index=0,
-      number=1, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='ipaddress', full_name='context.TeraFlowController.ipaddress', index=1,
-      number=2, type=9, cpp_type=9, label=1,
-      has_default_value=False, default_value=b"".decode('utf-8'),
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=1035,
-  serialized_end=1110,
-)
-
-
-_AUTHENTICATIONRESULT = _descriptor.Descriptor(
-  name='AuthenticationResult',
-  full_name='context.AuthenticationResult',
-  filename=None,
-  file=DESCRIPTOR,
-  containing_type=None,
-  create_key=_descriptor._internal_create_key,
-  fields=[
-    _descriptor.FieldDescriptor(
-      name='ctl_id', full_name='context.AuthenticationResult.ctl_id', index=0,
-      number=1, type=11, cpp_type=10, label=1,
-      has_default_value=False, default_value=None,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-    _descriptor.FieldDescriptor(
-      name='authenticated', full_name='context.AuthenticationResult.authenticated', index=1,
-      number=2, type=8, cpp_type=7, label=1,
-      has_default_value=False, default_value=False,
-      message_type=None, enum_type=None, containing_type=None,
-      is_extension=False, extension_scope=None,
-      serialized_options=None, file=DESCRIPTOR,  create_key=_descriptor._internal_create_key),
-  ],
-  extensions=[
-  ],
-  nested_types=[],
-  enum_types=[
-  ],
-  serialized_options=None,
-  is_extendable=False,
-  syntax='proto3',
-  extension_ranges=[],
-  oneofs=[
-  ],
-  serialized_start=1112,
-  serialized_end=1193,
-)
-
-_CONTEXT.fields_by_name['contextId'].message_type = _CONTEXTID
-_CONTEXT.fields_by_name['topo'].message_type = _TOPOLOGY
-_CONTEXT.fields_by_name['ctl'].message_type = _TERAFLOWCONTROLLER
-_CONTEXTID.fields_by_name['contextUuid'].message_type = _UUID
-_TOPOLOGY.fields_by_name['topoId'].message_type = _TOPOLOGYID
-_TOPOLOGY.fields_by_name['device'].message_type = _DEVICE
-_TOPOLOGY.fields_by_name['link'].message_type = _LINK
-_LINK.fields_by_name['endpointList'].message_type = _ENDPOINTID
-_TOPOLOGYID.fields_by_name['contextId'].message_type = _CONTEXTID
-_TOPOLOGYID.fields_by_name['topoId'].message_type = _UUID
-_DEVICE.fields_by_name['device_id'].message_type = _DEVICEID
-_DEVICE.fields_by_name['device_config'].message_type = _DEVICECONFIG
-_DEVICE.fields_by_name['devOperationalStatus'].enum_type = _DEVICEOPERATIONALSTATUS
-_DEVICE.fields_by_name['endpointList'].message_type = _ENDPOINT
-_ENDPOINT.fields_by_name['port_id'].message_type = _ENDPOINTID
-_ENDPOINTID.fields_by_name['topoId'].message_type = _TOPOLOGYID
-_ENDPOINTID.fields_by_name['dev_id'].message_type = _DEVICEID
-_ENDPOINTID.fields_by_name['port_id'].message_type = _UUID
-_DEVICEID.fields_by_name['device_id'].message_type = _UUID
-_TERAFLOWCONTROLLER.fields_by_name['ctl_id'].message_type = _CONTEXTID
-_AUTHENTICATIONRESULT.fields_by_name['ctl_id'].message_type = _CONTEXTID
-DESCRIPTOR.message_types_by_name['Empty'] = _EMPTY
-DESCRIPTOR.message_types_by_name['Context'] = _CONTEXT
-DESCRIPTOR.message_types_by_name['ContextId'] = _CONTEXTID
-DESCRIPTOR.message_types_by_name['Topology'] = _TOPOLOGY
-DESCRIPTOR.message_types_by_name['Link'] = _LINK
-DESCRIPTOR.message_types_by_name['TopologyId'] = _TOPOLOGYID
-DESCRIPTOR.message_types_by_name['Constraint'] = _CONSTRAINT
-DESCRIPTOR.message_types_by_name['Device'] = _DEVICE
-DESCRIPTOR.message_types_by_name['DeviceConfig'] = _DEVICECONFIG
-DESCRIPTOR.message_types_by_name['EndPoint'] = _ENDPOINT
-DESCRIPTOR.message_types_by_name['EndPointId'] = _ENDPOINTID
-DESCRIPTOR.message_types_by_name['DeviceId'] = _DEVICEID
-DESCRIPTOR.message_types_by_name['Uuid'] = _UUID
-DESCRIPTOR.message_types_by_name['TeraFlowController'] = _TERAFLOWCONTROLLER
-DESCRIPTOR.message_types_by_name['AuthenticationResult'] = _AUTHENTICATIONRESULT
-DESCRIPTOR.enum_types_by_name['DeviceOperationalStatus'] = _DEVICEOPERATIONALSTATUS
-_sym_db.RegisterFileDescriptor(DESCRIPTOR)
-
-Empty = _reflection.GeneratedProtocolMessageType('Empty', (_message.Message,), {
-  'DESCRIPTOR' : _EMPTY,
-  '__module__' : 'context_pb2'
-  # @@protoc_insertion_point(class_scope:context.Empty)
-  })
-_sym_db.RegisterMessage(Empty)
-
-Context = _reflection.GeneratedProtocolMessageType('Context', (_message.Message,), {
-  'DESCRIPTOR' : _CONTEXT,
-  '__module__' : 'context_pb2'
-  # @@protoc_insertion_point(class_scope:context.Context)
-  })
-_sym_db.RegisterMessage(Context)
-
-ContextId = _reflection.GeneratedProtocolMessageType('ContextId', (_message.Message,), {
-  'DESCRIPTOR' : _CONTEXTID,
-  '__module__' : 'context_pb2'
-  # @@protoc_insertion_point(class_scope:context.ContextId)
-  })
-_sym_db.RegisterMessage(ContextId)
-
-Topology = _reflection.GeneratedProtocolMessageType('Topology', (_message.Message,), {
-  'DESCRIPTOR' : _TOPOLOGY,
-  '__module__' : 'context_pb2'
-  # @@protoc_insertion_point(class_scope:context.Topology)
-  })
-_sym_db.RegisterMessage(Topology)
-
-Link = _reflection.GeneratedProtocolMessageType('Link', (_message.Message,), {
-  'DESCRIPTOR' : _LINK,
-  '__module__' : 'context_pb2'
-  # @@protoc_insertion_point(class_scope:context.Link)
-  })
-_sym_db.RegisterMessage(Link)
-
-TopologyId = _reflection.GeneratedProtocolMessageType('TopologyId', (_message.Message,), {
-  'DESCRIPTOR' : _TOPOLOGYID,
-  '__module__' : 'context_pb2'
-  # @@protoc_insertion_point(class_scope:context.TopologyId)
-  })
-_sym_db.RegisterMessage(TopologyId)
-
-Constraint = _reflection.GeneratedProtocolMessageType('Constraint', (_message.Message,), {
-  'DESCRIPTOR' : _CONSTRAINT,
-  '__module__' : 'context_pb2'
-  # @@protoc_insertion_point(class_scope:context.Constraint)
-  })
-_sym_db.RegisterMessage(Constraint)
-
-Device = _reflection.GeneratedProtocolMessageType('Device', (_message.Message,), {
-  'DESCRIPTOR' : _DEVICE,
-  '__module__' : 'context_pb2'
-  # @@protoc_insertion_point(class_scope:context.Device)
-  })
-_sym_db.RegisterMessage(Device)
-
-DeviceConfig = _reflection.GeneratedProtocolMessageType('DeviceConfig', (_message.Message,), {
-  'DESCRIPTOR' : _DEVICECONFIG,
-  '__module__' : 'context_pb2'
-  # @@protoc_insertion_point(class_scope:context.DeviceConfig)
-  })
-_sym_db.RegisterMessage(DeviceConfig)
-
-EndPoint = _reflection.GeneratedProtocolMessageType('EndPoint', (_message.Message,), {
-  'DESCRIPTOR' : _ENDPOINT,
-  '__module__' : 'context_pb2'
-  # @@protoc_insertion_point(class_scope:context.EndPoint)
-  })
-_sym_db.RegisterMessage(EndPoint)
-
-EndPointId = _reflection.GeneratedProtocolMessageType('EndPointId', (_message.Message,), {
-  'DESCRIPTOR' : _ENDPOINTID,
-  '__module__' : 'context_pb2'
-  # @@protoc_insertion_point(class_scope:context.EndPointId)
-  })
-_sym_db.RegisterMessage(EndPointId)
-
-DeviceId = _reflection.GeneratedProtocolMessageType('DeviceId', (_message.Message,), {
-  'DESCRIPTOR' : _DEVICEID,
-  '__module__' : 'context_pb2'
-  # @@protoc_insertion_point(class_scope:context.DeviceId)
-  })
-_sym_db.RegisterMessage(DeviceId)
-
-Uuid = _reflection.GeneratedProtocolMessageType('Uuid', (_message.Message,), {
-  'DESCRIPTOR' : _UUID,
-  '__module__' : 'context_pb2'
-  # @@protoc_insertion_point(class_scope:context.Uuid)
-  })
-_sym_db.RegisterMessage(Uuid)
-
-TeraFlowController = _reflection.GeneratedProtocolMessageType('TeraFlowController', (_message.Message,), {
-  'DESCRIPTOR' : _TERAFLOWCONTROLLER,
-  '__module__' : 'context_pb2'
-  # @@protoc_insertion_point(class_scope:context.TeraFlowController)
-  })
-_sym_db.RegisterMessage(TeraFlowController)
-
-AuthenticationResult = _reflection.GeneratedProtocolMessageType('AuthenticationResult', (_message.Message,), {
-  'DESCRIPTOR' : _AUTHENTICATIONRESULT,
-  '__module__' : 'context_pb2'
-  # @@protoc_insertion_point(class_scope:context.AuthenticationResult)
-  })
-_sym_db.RegisterMessage(AuthenticationResult)
-
-
-
-_CONTEXTSERVICE = _descriptor.ServiceDescriptor(
-  name='ContextService',
-  full_name='context.ContextService',
-  file=DESCRIPTOR,
-  index=0,
-  serialized_options=None,
-  create_key=_descriptor._internal_create_key,
-  serialized_start=1249,
-  serialized_end=1317,
-  methods=[
-  _descriptor.MethodDescriptor(
-    name='GetTopology',
-    full_name='context.ContextService.GetTopology',
-    index=0,
-    containing_service=None,
-    input_type=_EMPTY,
-    output_type=_TOPOLOGY,
-    serialized_options=None,
-    create_key=_descriptor._internal_create_key,
-  ),
-])
-_sym_db.RegisterServiceDescriptor(_CONTEXTSERVICE)
-
-DESCRIPTOR.services_by_name['ContextService'] = _CONTEXTSERVICE
-
-# @@protoc_insertion_point(module_scope)