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Diffstat (limited to 'src/ruby/spec/channel_connection_spec.rb')
-rw-r--r-- | src/ruby/spec/channel_connection_spec.rb | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/src/ruby/spec/channel_connection_spec.rb b/src/ruby/spec/channel_connection_spec.rb new file mode 100644 index 0000000000..940d68b9b0 --- /dev/null +++ b/src/ruby/spec/channel_connection_spec.rb @@ -0,0 +1,141 @@ +# Copyright 2015, Google Inc. +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are +# met: +# +# * Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# * Redistributions in binary form must reproduce the above +# copyright notice, this list of conditions and the following disclaimer +# in the documentation and/or other materials provided with the +# distribution. +# * Neither the name of Google Inc. nor the names of its +# contributors may be used to endorse or promote products derived from +# this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +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 + 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 +end + +EchoStub = EchoService.rpc_stub_class + +def start_server(port = 0) + @srv = GRPC::RpcServer.new + server_port = @srv.add_http2_port("localhost:#{port}", :this_port_is_insecure) + @srv.handle(EchoService) + @server_thd = Thread.new { @srv.run } + @srv.wait_till_running + server_port +end + +def stop_server + expect(@srv.stopped?).to be(false) + @srv.stop + @server_thd.join + expect(@srv.stopped?).to be(true) +end + +describe 'channel connection behavior' do + it 'the client channel handles temporary loss of a transport' do + port = start_server + stub = EchoStub.new("localhost:#{port}", :this_channel_is_insecure) + req = EchoMsg.new + expect(stub.an_rpc(req)).to be_a(EchoMsg) + stop_server + sleep 1 + # TODO(apolcyn) grabbing the same port might fail, is this stable enough? + start_server(port) + expect(stub.an_rpc(req)).to be_a(EchoMsg) + stop_server + end + + it 'observably connects and reconnects to transient server' \ + ' when using the channel state API' do + port = start_server + ch = GRPC::Core::Channel.new("localhost:#{port}", {}, + :this_channel_is_insecure) + + expect(ch.connectivity_state).to be(GRPC::Core::ConnectivityStates::IDLE) + + state = ch.connectivity_state(true) + + count = 0 + while count < 20 && state != GRPC::Core::ConnectivityStates::READY + ch.watch_connectivity_state(state, Time.now + 60) + state = ch.connectivity_state(true) + count += 1 + end + + expect(state).to be(GRPC::Core::ConnectivityStates::READY) + + stop_server + + state = ch.connectivity_state + + count = 0 + while count < 20 && state == GRPC::Core::ConnectivityStates::READY + ch.watch_connectivity_state(state, Time.now + 60) + state = ch.connectivity_state + count += 1 + end + + expect(state).to_not be(GRPC::Core::ConnectivityStates::READY) + + start_server(port) + + state = ch.connectivity_state(true) + + count = 0 + while count < 20 && state != GRPC::Core::ConnectivityStates::READY + ch.watch_connectivity_state(state, Time.now + 60) + state = ch.connectivity_state(true) + count += 1 + end + + expect(state).to be(GRPC::Core::ConnectivityStates::READY) + + stop_server + end +end |