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# Copyright (C) 2018 Bloomberg LP 

# 

# 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 logging 

 

import grpc 

 

from buildgrid._exceptions import InvalidArgumentError, NotFoundError 

from buildgrid._protos.buildstream.v2 import buildstream_pb2 

from buildgrid._protos.buildstream.v2 import buildstream_pb2_grpc 

from buildgrid.server._authentication import AuthContext, authorize 

 

 

class ReferenceStorageService(buildstream_pb2_grpc.ReferenceStorageServicer): 

 

def __init__(self, server): 

self.__logger = logging.getLogger(__name__) 

 

self._instances = {} 

 

buildstream_pb2_grpc.add_ReferenceStorageServicer_to_server(self, server) 

 

# --- Public API --- 

 

def add_instance(self, name, instance): 

self._instances[name] = instance 

 

# --- Public API: Servicer --- 

 

@authorize(AuthContext) 

def GetReference(self, request, context): 

self.__logger.debug("GetReference request from [%s]", context.peer()) 

 

try: 

instance = self._get_instance(request.instance_name) 

digest = instance.get_digest_reference(request.key) 

response = buildstream_pb2.GetReferenceResponse() 

response.digest.CopyFrom(digest) 

return response 

 

except InvalidArgumentError as e: 

self.__logger.error(e) 

context.set_details(str(e)) 

context.set_code(grpc.StatusCode.INVALID_ARGUMENT) 

 

except NotFoundError as e: 

self.__logger.debug(e) 

context.set_code(grpc.StatusCode.NOT_FOUND) 

 

return buildstream_pb2.GetReferenceResponse() 

 

@authorize(AuthContext) 

def UpdateReference(self, request, context): 

self.__logger.debug("UpdateReference request from [%s]", context.peer()) 

 

try: 

instance = self._get_instance(request.instance_name) 

digest = request.digest 

 

for key in request.keys: 

instance.update_reference(key, digest) 

 

except InvalidArgumentError as e: 

self.__logger.error(e) 

context.set_details(str(e)) 

context.set_code(grpc.StatusCode.INVALID_ARGUMENT) 

 

except NotImplementedError: 

context.set_code(grpc.StatusCode.UNIMPLEMENTED) 

 

return buildstream_pb2.UpdateReferenceResponse() 

 

@authorize(AuthContext) 

def Status(self, request, context): 

self.__logger.debug("Status request from [%s]", context.peer()) 

 

try: 

instance = self._get_instance(request.instance_name) 

allow_updates = instance.allow_updates 

return buildstream_pb2.StatusResponse(allow_updates=allow_updates) 

 

except InvalidArgumentError as e: 

self.__logger.error(e) 

context.set_details(str(e)) 

context.set_code(grpc.StatusCode.INVALID_ARGUMENT) 

 

return buildstream_pb2.StatusResponse() 

 

# --- Private API --- 

 

def _get_instance(self, instance_name): 

try: 

return self._instances[instance_name] 

 

except KeyError: 

raise InvalidArgumentError("Invalid instance name: [{}]".format(instance_name))