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# 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.
from flask import make_response
from flask.json import jsonify
from flask_restful import Resource
from common.orm.Database import Database
from common.tools.grpc.Tools import grpc_message_to_json
from context.proto.context_pb2 import ConnectionId, ContextId, DeviceId, Empty, LinkId, ServiceId, TopologyId
from context.service.grpc_server.ContextServiceServicerImpl import ContextServiceServicerImpl
def format_grpc_to_json(grpc_reply):
return jsonify(grpc_message_to_json(grpc_reply))
def grpc_connection_id(connection_uuid):
return ConnectionId(**{
'connection_uuid': {'uuid': connection_uuid}
def grpc_context_id(context_uuid):
return ContextId(**{
'context_uuid': {'uuid': context_uuid}
})
def grpc_device_id(device_uuid):
return DeviceId(**{
'device_uuid': {'uuid': device_uuid}
})
def grpc_link_id(link_uuid):
return LinkId(**{
'link_uuid': {'uuid': link_uuid}
})
def grpc_service_id(context_uuid, service_uuid):
return ServiceId(**{
'context_id': {'context_uuid': {'uuid': context_uuid}},
'service_uuid': {'uuid': service_uuid}
})
def grpc_topology_id(context_uuid, topology_uuid):
return TopologyId(**{
'context_id': {'context_uuid': {'uuid': context_uuid}},
'topology_uuid': {'uuid': topology_uuid}
})
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class _Resource(Resource):
def __init__(self, database : Database) -> None:
super().__init__()
self.database = database
self.servicer = ContextServiceServicerImpl(self.database, None)
class ContextIds(_Resource):
def get(self):
return format_grpc_to_json(self.servicer.ListContextIds(Empty(), None))
class Contexts(_Resource):
def get(self):
return format_grpc_to_json(self.servicer.ListContexts(Empty(), None))
class Context(_Resource):
def get(self, context_uuid : str):
return format_grpc_to_json(self.servicer.GetContext(grpc_context_id(context_uuid), None))
class TopologyIds(_Resource):
def get(self, context_uuid : str):
return format_grpc_to_json(self.servicer.ListTopologyIds(grpc_context_id(context_uuid), None))
class Topologies(_Resource):
def get(self, context_uuid : str):
return format_grpc_to_json(self.servicer.ListTopologies(grpc_context_id(context_uuid), None))
class Topology(_Resource):
def get(self, context_uuid : str, topology_uuid : str):
return format_grpc_to_json(self.servicer.GetTopology(grpc_topology_id(context_uuid, topology_uuid), None))
class ServiceIds(_Resource):
def get(self, context_uuid : str):
return format_grpc_to_json(self.servicer.ListServiceIds(grpc_context_id(context_uuid), None))
class Services(_Resource):
def get(self, context_uuid : str):
return format_grpc_to_json(self.servicer.ListServices(grpc_context_id(context_uuid), None))
class Service(_Resource):
def get(self, context_uuid : str, service_uuid : str):
return format_grpc_to_json(self.servicer.GetService(grpc_service_id(context_uuid, service_uuid), None))
class DeviceIds(_Resource):
def get(self):
return format_grpc_to_json(self.servicer.ListDeviceIds(Empty(), None))
class Devices(_Resource):
def get(self):
return format_grpc_to_json(self.servicer.ListDevices(Empty(), None))
class Device(_Resource):
def get(self, device_uuid : str):
return format_grpc_to_json(self.servicer.GetDevice(grpc_device_id(device_uuid), None))
class LinkIds(_Resource):
def get(self):
return format_grpc_to_json(self.servicer.ListLinkIds(Empty(), None))
class Links(_Resource):
def get(self):
return format_grpc_to_json(self.servicer.ListLinks(Empty(), None))
class Link(_Resource):
def get(self, link_uuid : str):
return format_grpc_to_json(self.servicer.GetLink(grpc_link_id(link_uuid), None))
class ConnectionIds(_Resource):
def get(self, context_uuid : str, service_uuid : str):
return format_grpc_to_json(self.servicer.ListConnectionIds(grpc_service_id(context_uuid, service_uuid), None))
class Connections(_Resource):
def get(self, context_uuid : str, service_uuid : str):
return format_grpc_to_json(self.servicer.ListConnections(grpc_service_id(context_uuid, service_uuid), None))
class Connection(_Resource):
def get(self, connection_uuid : str):
return format_grpc_to_json(self.servicer.GetConnection(grpc_connection_id(connection_uuid), None))
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class DumpText(Resource):
def __init__(self, database : Database) -> None:
super().__init__()
self.database = database
def get(self):
db_entries = self.database.dump()
num_entries = len(db_entries)
response = ['----- Database Dump [{:3d} entries] -------------------------'.format(len(db_entries))]
for db_entry in db_entries:
response.append(' [{:>4s}] {:40s} :: {:s}'.format(*db_entry)) # pragma: no cover
response.append('-----------------------------------------------------------')
headers = {'Content-Type': 'text/plain'}
return make_response('\n'.join(response), 200, headers)
class DumpHtml(Resource):
def __init__(self, database : Database) -> None:
super().__init__()
self.database = database
def get(self):
db_entries = self.database.dump()
num_entries = len(db_entries)
response = []
response.append('<HTML><HEAD><TITLE>Database Dump [{:3d} entries]</TITLE></HEAD><BODY>'.format(num_entries))
response.append('<H3>Database Dump [{:3d} entries]</H3><HR/>'.format(num_entries))
response.append('<TABLE border=1>')
response.append('<TR><TH>Type</TH><TH>Key</TH><TH>Value</TH></TR>')
for db_entry in db_entries:
response.append('<TR><TD>{:s}</TD><TD>{:s}</TD><TD>{:s}</TD></TR>'.format(*db_entry))
response.append('</TABLE></BODY></HTML>')
headers = {'Content-Type': 'text/html'}
return make_response(''.join(response), 200, headers)
# Use 'path' type in Service and Sink because service_uuid and link_uuid might contain char '/' and Flask is unable to
# recognize them in 'string' type.
RESOURCES = [
# (endpoint_name, resource_class, resource_url)
('api.context_ids', ContextIds, '/context_ids'),
('api.contexts', Contexts, '/contexts'),
('api.context', Context, '/context/<string:context_uuid>'),
('api.topology_ids', TopologyIds, '/context/<string:context_uuid>/topology_ids'),
('api.topologies', Topologies, '/context/<string:context_uuid>/topologies'),
('api.topology', Topology, '/context/<string:context_uuid>/topology/<string:topology_uuid>'),
('api.service_ids', ServiceIds, '/context/<string:context_uuid>/service_ids'),
('api.services', Services, '/context/<string:context_uuid>/services'),
('api.service', Service, '/context/<string:context_uuid>/service/<path:service_uuid>'),
('api.device_ids', DeviceIds, '/device_ids'),
('api.devices', Devices, '/devices'),
('api.device', Device, '/device/<string:device_uuid>'),
('api.link_ids', LinkIds, '/link_ids'),
('api.links', Links, '/links'),
('api.link', Link, '/link/<path:link_uuid>'),
('api.connection_ids', ConnectionIds, '/context/<string:context_uuid>/service/<path:service_uuid>/connection_ids'),
('api.connections', Connections, '/context/<string:context_uuid>/service/<path:service_uuid>/connections'),
('api.connection', Connection, '/connection/<path:connection_uuid>'),
('api.dump.text', DumpText, '/dump/text'),
('api.dump.html', DumpHtml, '/dump/html'),