The commit consists of:
1) Support metadata (e.g. get-depth) for rpc request.
2) Support parameters in rpc requests
3) Generate the code for netconf rpc to Voltha grpc mapping
4) Initial Support custom rpc requests (those defined in the voltha YANG schemas).
Change-Id: I24dc7fd75b5f71d0d8591637579672b25fda57ec
diff --git a/netconf/nc_rpc/ext/voltha_rpc.py b/netconf/nc_rpc/ext/voltha_rpc.py
new file mode 100644
index 0000000..37ba305
--- /dev/null
+++ b/netconf/nc_rpc/ext/voltha_rpc.py
@@ -0,0 +1,117 @@
+#!/usr/bin/env python
+#
+# Copyright 2017 the original author or authors.
+#
+# 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 structlog
+from netconf.nc_rpc.rpc import Rpc
+import netconf.nc_common.error as ncerror
+from twisted.internet.defer import inlineCallbacks, returnValue
+import dicttoxml
+from netconf.nc_common.utils import qmap, ns
+from netconf.constants import Constants as C
+from netconf.grpc_client.nc_rpc_mapper import \
+ get_nc_rpc_mapper_instance
+
+log = structlog.get_logger()
+
+
+class VolthaRpc(Rpc):
+ def __init__(self, request, request_xml, grpc_client, session,
+ capabilities):
+ super(VolthaRpc, self).__init__(request, request_xml, grpc_client,
+ session, capabilities)
+ self.service = None
+ self.method = None
+ self.metadata = None
+ self._extract_parameters()
+ if not self.rpc_response.is_error:
+ self._validate_parameters()
+
+ @inlineCallbacks
+ def execute(self):
+ if self.rpc_response.is_error:
+ returnValue(self.rpc_response)
+
+ log.info('voltha-rpc-request', session=self.session.session_id,
+ request=self.request)
+
+ # Execute the request
+ res_dict = yield self.grpc_client.invoke_voltha_rpc(
+ service=self.service,
+ method=self.method,
+ params=self.request['params'],
+ metadata=self.metadata)
+
+ # convert dict to xml
+ xml = dicttoxml.dicttoxml(res_dict, attr_type=True)
+ log.info('voltha-info', res=res_dict, xml=xml)
+
+ root_elem = self.get_root_element(xml)
+
+ # Build the yang response
+ self.rpc_response.node = self.rpc_response.build_yang_response(
+ root_elem, self.request, custom_rpc=True)
+ self.rpc_response.is_error = False
+
+ returnValue(self.rpc_response)
+
+ def _validate_parameters(self):
+ log.info('validate-parameters', session=self.session.session_id)
+ # For now just validate that the command is presenf
+ if self.request:
+ try:
+ if self.request['command'] is None:
+ self.rpc_response.is_error = True
+ self.rpc_response.node = ncerror.BadMsg(self.request_xml)
+ return
+
+ except Exception as e:
+ self.rpc_response.is_error = True
+ self.rpc_response.node = ncerror.ServerException(
+ self.request_xml)
+ return
+
+ def _extract_parameters(self):
+ try:
+ rpc_node = self.request_xml.find(''.join(
+ [qmap(C.VOLTHA),
+ self.request['command']])
+ )
+ self.request['params'] = {}
+ if rpc_node is not None:
+ for r in rpc_node:
+ self.request['params'][
+ r.tag.replace(qmap(C.VOLTHA), "")] = r.text
+
+ # Remove the subclass element in the request if it is present as
+ # it is not required for rpc calls
+ if self.request.has_key('subclass'):
+ self.request.pop('subclass', None)
+
+ # Extract the service and method from the rpc command
+ command = self.request['command'].split('-')
+ if len(command) != 2:
+ log.debug('invalid-format', command=self.request['command'])
+ raise
+
+ self.service = command[0]
+ self.method = command[1]
+ if self.request.has_key('metadata'):
+ self.metadata = self.request['metadata']
+
+ except Exception as e:
+ self.rpc_response.is_error = True
+ self.rpc_response.node = ncerror.BadMsg(self.request_xml)
+ log.exception('params-parsing-error', xml=self.request_xml, e=e)