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# Copyright 2017 gRPC 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.
# GRPC contains the General RPC module.
module GRPC
##
# Represents a registry of added interceptors available for enumeration.
# The registry can be used for both server and client interceptors.
# This class is internal to gRPC and not meant for public usage.
#
class InterceptorRegistry
##
# An error raised when an interceptor is attempted to be added
# that does not extend GRPC::Interceptor
#
class DescendantError < StandardError; end
##
# Initialize the registry with an empty interceptor list
# This is an EXPERIMENTAL API.
#
def initialize(interceptors = [])
@interceptors = []
interceptors.each do |i|
base = GRPC::Interceptor
unless i.class.ancestors.include?(base)
fail DescendantError, "Interceptors must descend from #{base}"
end
@interceptors << i
end
end
##
# Builds an interception context from this registry
#
# @return [InterceptionContext]
#
def build_context
InterceptionContext.new(@interceptors)
end
end
end
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