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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.
# Test stubs for various scenarios
require 'grpc'
# A test message
class EchoMsg
def self.marshal(_o)
''
end
def self.unmarshal(_o)
EchoMsg.new
end
end
# A test service with an echo implementation.
class EchoService
include GRPC::GenericService
rpc :an_rpc, EchoMsg, EchoMsg
rpc :a_client_streaming_rpc, stream(EchoMsg), EchoMsg
rpc :a_server_streaming_rpc, EchoMsg, stream(EchoMsg)
rpc :a_bidi_rpc, stream(EchoMsg), stream(EchoMsg)
attr_reader :received_md
def initialize(**kw)
@trailing_metadata = kw
@received_md = []
end
def an_rpc(req, call)
GRPC.logger.info('echo service received a request')
call.output_metadata.update(@trailing_metadata)
@received_md << call.metadata unless call.metadata.nil?
req
end
def a_client_streaming_rpc(call)
# iterate through requests so call can complete
call.output_metadata.update(@trailing_metadata)
call.each_remote_read.each { |r| p r }
EchoMsg.new
end
def a_server_streaming_rpc(_req, call)
call.output_metadata.update(@trailing_metadata)
[EchoMsg.new, EchoMsg.new]
end
def a_bidi_rpc(requests, call)
call.output_metadata.update(@trailing_metadata)
requests.each { |r| p r }
[EchoMsg.new, EchoMsg.new]
end
end
EchoStub = EchoService.rpc_stub_class
# For testing server interceptors
class TestServerInterceptor < GRPC::ServerInterceptor
def request_response(request:, call:, method:)
p "Received request/response call at method #{method}" \
" with request #{request} for call #{call}"
call.output_metadata[:interc] = 'from_request_response'
p "[GRPC::Ok] (#{method.owner.name}.#{method.name})"
yield
end
def client_streamer(call:, method:)
call.output_metadata[:interc] = 'from_client_streamer'
call.each_remote_read.each do |r|
p "In interceptor: #{r}"
end
p "Received client streamer call at method #{method} for call #{call}"
yield
end
def server_streamer(request:, call:, method:)
p "Received server streamer call at method #{method} with request" \
" #{request} for call #{call}"
call.output_metadata[:interc] = 'from_server_streamer'
yield
end
def bidi_streamer(requests:, call:, method:)
requests.each do |r|
p "Bidi request: #{r}"
end
p "Received bidi streamer call at method #{method} with requests" \
" #{requests} for call #{call}"
call.output_metadata[:interc] = 'from_bidi_streamer'
yield
end
end
# For testing client interceptors
class TestClientInterceptor < GRPC::ClientInterceptor
def request_response(request:, call:, method:, metadata: {})
p "Intercepted request/response call at method #{method}" \
" with request #{request} for call #{call}" \
" and metadata: #{metadata}"
metadata['foo'] = 'bar_from_request_response'
yield
end
def client_streamer(requests:, call:, method:, metadata: {})
p "Received client streamer call at method #{method}" \
" with requests #{requests} for call #{call}" \
" and metadata: #{metadata}"
requests.each do |r|
p "In client interceptor: #{r}"
end
metadata['foo'] = 'bar_from_client_streamer'
yield
end
def server_streamer(request:, call:, method:, metadata: {})
p "Received server streamer call at method #{method}" \
" with request #{request} for call #{call}" \
" and metadata: #{metadata}"
metadata['foo'] = 'bar_from_server_streamer'
yield
end
def bidi_streamer(requests:, call:, method:, metadata: {})
p "Received bidi streamer call at method #{method}" \
"with requests #{requests} for call #{call}" \
" and metadata: #{metadata}"
requests.each do |r|
p "In client interceptor: #{r}"
end
metadata['foo'] = 'bar_from_bidi_streamer'
yield
end
end
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