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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. 

 

 

""" 

ActionCacheService 

================== 

 

Allows clients to manually query/update the action cache. 

""" 

 

import logging 

 

import grpc 

 

from buildgrid._exceptions import InvalidArgumentError, NotFoundError 

from buildgrid._protos.build.bazel.remote.execution.v2 import remote_execution_pb2 

from buildgrid._protos.build.bazel.remote.execution.v2 import remote_execution_pb2_grpc 

from buildgrid.server._authentication import AuthContext, authorize 

 

 

class ActionCacheService(remote_execution_pb2_grpc.ActionCacheServicer): 

 

def __init__(self, server): 

self.__logger = logging.getLogger(__name__) 

 

self._instances = {} 

 

remote_execution_pb2_grpc.add_ActionCacheServicer_to_server(self, server) 

 

# --- Public API --- 

 

def add_instance(self, name, instance): 

self._instances[name] = instance 

 

# --- Public API: Servicer --- 

 

@authorize(AuthContext) 

def GetActionResult(self, request, context): 

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

 

try: 

instance = self._get_instance(request.instance_name) 

return instance.get_action_result(request.action_digest) 

 

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 remote_execution_pb2.ActionResult() 

 

@authorize(AuthContext) 

def UpdateActionResult(self, request, context): 

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

 

try: 

instance = self._get_instance(request.instance_name) 

instance.update_action_result(request.action_digest, request.action_result) 

return request.action_result 

 

except InvalidArgumentError as e: 

self.__logger.error(e) 

context.set_details(str(e)) 

context.set_code(grpc.StatusCode.INVALID_ARGUMENT) 

 

except NotImplementedError as e: 

self.__logger.error(e) 

context.set_code(grpc.StatusCode.UNIMPLEMENTED) 

 

return remote_execution_pb2.ActionResult() 

 

# --- Private API --- 

 

def _get_instance(self, instance_name): 

try: 

return self._instances[instance_name] 

 

except KeyError: 

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