Got Ruby stress client working, with some modifications to interop tests

src/ruby/pb/grpc/testing/metrics.rb

+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: grpc/testing/metrics.proto
+
+require 'google/protobuf'
+
+Google::Protobuf::DescriptorPool.generated_pool.build do
+  add_message "grpc.testing.GaugeResponse" do
+    optional :name, :string, 1
+    oneof :value do
+      optional :long_value, :int64, 2
+      optional :double_value, :double, 3
+      optional :string_value, :string, 4
+    end
+  end
+  add_message "grpc.testing.GaugeRequest" do
+    optional :name, :string, 1
+  end
+  add_message "grpc.testing.EmptyMessage" do
+  end
+end
+
+module Grpc
+  module Testing
+    GaugeResponse = Google::Protobuf::DescriptorPool.generated_pool.lookup("grpc.testing.GaugeResponse").msgclass
+    GaugeRequest = Google::Protobuf::DescriptorPool.generated_pool.lookup("grpc.testing.GaugeRequest").msgclass
+    EmptyMessage = Google::Protobuf::DescriptorPool.generated_pool.lookup("grpc.testing.EmptyMessage").msgclass
+  end
+end

src/ruby/pb/grpc/testing/metrics_services.rb

+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# Source: grpc/testing/metrics.proto for package 'grpc.testing'
+
+require 'grpc'
+require 'grpc/testing/metrics'
+
+module Grpc
+  module Testing
+    module MetricsService
+
+      # TODO: add proto service documentation here
+      class Service
+
+        include GRPC::GenericService
+
+        self.marshal_class_method = :encode
+        self.unmarshal_class_method = :decode
+        self.service_name = 'grpc.testing.MetricsService'
+
+        rpc :GetAllGauges, EmptyMessage, stream(GaugeResponse)
+        rpc :GetGauge, GaugeRequest, GaugeResponse
+      end
+
+      Stub = Service.rpc_stub_class
+    end
+  end
+end

src/ruby/pb/test/client.rb

@@ -38,23 +38,23 @@
 #                            --server_port=<port> \
 #                            --test_case=<testcase_name>
 
+# These lines are required for the generated files to load grpc
 this_dir = File.expand_path(File.dirname(__FILE__))
 lib_dir = File.join(File.dirname(File.dirname(this_dir)), 'lib')
-pb_dir = File.dirname(File.dirname(this_dir))
+pb_dir = File.dirname(this_dir)
 $LOAD_PATH.unshift(lib_dir) unless $LOAD_PATH.include?(lib_dir)
 $LOAD_PATH.unshift(pb_dir) unless $LOAD_PATH.include?(pb_dir)
-$LOAD_PATH.unshift(this_dir) unless $LOAD_PATH.include?(this_dir)
 
 require 'optparse'
 require 'logger'
 
-require 'grpc'
+require_relative '../../lib/grpc'
 require 'googleauth'
 require 'google/protobuf'
 
-require 'test/proto/empty'
-require 'test/proto/messages'
-require 'test/proto/test_services'
+require_relative 'proto/empty'
+require_relative 'proto/messages'
+require_relative 'proto/test_services'
 
 AUTH_ENV = Google::Auth::CredentialsLoader::ENV_VAR
 
@@ -208,12 +208,10 @@ class NamedTests
   def empty_unary
     resp = @stub.empty_call(Empty.new)
     assert('empty_unary: invalid response') { resp.is_a?(Empty) }
-    p 'OK: empty_unary'
   end
 
   def large_unary
     perform_large_unary
-    p 'OK: large_unary'
   end
 
   def service_account_creds
@@ -230,7 +228,6 @@ class NamedTests
     assert("#{__callee__}: bad oauth scope") do
       @args.oauth_scope.include?(resp.oauth_scope)
     end
-    p "OK: #{__callee__}"
   end
 
   def jwt_token_creds
@@ -238,7 +235,6 @@ class NamedTests
     wanted_email = MultiJson.load(json_key)['client_email']
     resp = perform_large_unary(fill_username: true)
     assert("#{__callee__}: bad username") { wanted_email == resp.username }
-    p "OK: #{__callee__}"
   end
 
   def compute_engine_creds
@@ -247,7 +243,6 @@ class NamedTests
     assert("#{__callee__}: bad username") do
       @args.default_service_account == resp.username
     end
-    p "OK: #{__callee__}"
   end
 
   def oauth2_auth_token
@@ -259,7 +254,6 @@ class NamedTests
     assert("#{__callee__}: bad oauth scope") do
       @args.oauth_scope.include?(resp.oauth_scope)
     end
-    p "OK: #{__callee__}"
   end
 
   def per_rpc_creds
@@ -279,7 +273,6 @@ class NamedTests
     assert("#{__callee__}: bad oauth scope") do
       @args.oauth_scope.include?(resp.oauth_scope)
     end
-    p "OK: #{__callee__}"
   end
 
   def client_streaming
@@ -293,7 +286,6 @@ class NamedTests
     assert("#{__callee__}: aggregate payload size is incorrect") do
       wanted_aggregate_size == resp.aggregated_payload_size
     end
-    p "OK: #{__callee__}"
   end
 
   def server_streaming
@@ -311,7 +303,6 @@ class NamedTests
         :COMPRESSABLE == r.payload.type
       end
     end
-    p "OK: #{__callee__}"
   end
 
   def ping_pong
@@ -319,7 +310,6 @@ class NamedTests
     ppp = PingPongPlayer.new(msg_sizes)
     resps = @stub.full_duplex_call(ppp.each_item)
     resps.each { |r| ppp.queue.push(r) }
-    p "OK: #{__callee__}"
   end
 
   def timeout_on_sleeping_server
@@ -332,7 +322,6 @@ class NamedTests
     assert("#{__callee__}: status was wrong") do
       e.code == GRPC::Core::StatusCodes::DEADLINE_EXCEEDED
     end
-    p "OK: #{__callee__}"
   end
 
   def empty_stream
@@ -346,7 +335,6 @@ class NamedTests
     assert("#{__callee__}: too many responses expected 0") do
       count == 0
     end
-    p "OK: #{__callee__}"
   end
 
   def cancel_after_begin
@@ -361,7 +349,6 @@ class NamedTests
     fail 'Should have raised GRPC:Cancelled'
   rescue GRPC::Cancelled
     assert("#{__callee__}: call operation should be CANCELLED") { op.cancelled }
-    p "OK: #{__callee__}"
   end
 
   def cancel_after_first_response
@@ -374,7 +361,6 @@ class NamedTests
   rescue GRPC::Cancelled
     assert("#{__callee__}: call operation should be CANCELLED") { op.cancelled }
     op.wait
-    p "OK: #{__callee__}"
   end
 
   def all
@@ -442,7 +428,7 @@ def parse_args
     opts.on('--use_tls USE_TLS', ['false', 'true'],
             'require a secure connection?') do |v|
       args['secure'] = v == 'true'
-    end
+p    end
     opts.on('--use_test_ca USE_TEST_CA', ['false', 'true'],
             'if secure, use the test certificate?') do |v|
       args['use_test_ca'] = v == 'true'

src/ruby/pb/test/server.rb

@@ -39,7 +39,7 @@
 
 this_dir = File.expand_path(File.dirname(__FILE__))
 lib_dir = File.join(File.dirname(File.dirname(this_dir)), 'lib')
-pb_dir = File.dirname(File.dirname(this_dir))
+pb_dir = File.dirname(this_dir)
 $LOAD_PATH.unshift(lib_dir) unless $LOAD_PATH.include?(lib_dir)
 $LOAD_PATH.unshift(pb_dir) unless $LOAD_PATH.include?(pb_dir)
 $LOAD_PATH.unshift(this_dir) unless $LOAD_PATH.include?(this_dir)

src/ruby/stress/metrics_server.rb

+# Copyright 2016, 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_relative '../pb/grpc/testing/metrics.rb'
+require_relative '../pb/grpc/testing/metrics_services.rb'
+
+class Gauge
+  def get_name
+    raise NoMethodError.new
+  end
+
+  def get_type
+    raise NoMethodError.new
+  end
+
+  def get_value
+    raise NoMethodError.new
+  end
+end
+
+class MetricsServiceImpl < Grpc::Testing::MetricsService::Service
+  include Grpc::Testing
+  @gauges
+
+  def initialize
+    @gauges = {}
+  end
+
+  def register_gauge(gauge)
+    @gauges[gauge.get_name] = gauge
+  end
+
+  def make_gauge_response(gauge)
+    response = GaugeResponse.new(:name => gauge.get_name)
+    value = gauge.get_value
+    case gauge.get_type
+    when 'long'
+      response.long_value = value
+    when 'double'
+      response.double_value = value
+    when 'string'
+      response.string_value = value
+    end
+    response
+  end
+
+  def get_all_gauges(_empty, _call)
+    @gauges.values.map do |gauge|
+      make_gauge_response gauge
+    end
+  end
+
+  def get_gauge(gauge_req, _call)
+    gauge = @gauges[gauge_req.name]
+    make_gauge_response gauge
+  end
+end

src/ruby/stress/stress_client.rb

+#!/usr/bin/env ruby
+
+# Copyright 2016, 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 'optparse'
+require 'thread'
+require_relative '../pb/test/client'
+require_relative './metrics_server'
+require_relative '../lib/grpc'
+
+class QpsGauge < Gauge
+  @query_count
+  @query_mutex
+  @start_time
+
+  def initialize
+    @query_count = 0
+    @query_mutex = Mutex.new
+    @start_time = Time.now
+  end
+
+  def increment_queries
+    @query_mutex.synchronize { @query_count += 1}
+  end
+
+  def get_name
+    'qps'
+  end
+
+  def get_type
+    'long'
+  end
+
+  def get_value
+    (@query_mutex.synchronize { @query_count / (Time.now - @start_time) }).to_i
+  end
+end
+
+def start_metrics_server(port)
+  host = "0.0.0.0:#{port}"
+  server = GRPC::RpcServer.new
+  server.add_http2_port(host, :this_port_is_insecure)
+  service = MetricsServiceImpl.new
+  server.handle(service)
+  server_thread = Thread.new { server.run_till_terminated }
+  [server, service, server_thread]
+end
+
+StressArgs = Struct.new(:server_addresses, :test_cases, :duration,
+                        :channels_per_server, :concurrent_calls, :metrics_port)
+
+def start(stress_args)
+  running = true
+  threads = []
+  qps_gauge = QpsGauge.new
+  metrics_server, metrics_service, metrics_thread =
+    start_metrics_server(stress_args.metrics_port)
+  metrics_service.register_gauge(qps_gauge)
+  stress_args.server_addresses.each do |address|
+    stress_args.channels_per_server.times do
+      client_args = Args.new
+      client_args.host, client_args.port = address.split(':')
+      client_args.secure = false
+      client_args.test_case = ''
+      stub = create_stub(client_args)
+      named_tests = NamedTests.new(stub, client_args)
+      stress_args.concurrent_calls.times do
+        threads << Thread.new do
+          while running
+            named_tests.method(stress_args.test_cases.sample).call
+            qps_gauge.increment_queries
+          end
+        end
+      end
+    end
+  end
+  if stress_args.duration >= 0
+    sleep stress_args.duration
+    running = false
+    metrics_server.stop
+    p "QPS: #{qps_gauge.get_value}"
+    threads.each { |thd| thd.join; }
+  end
+  metrics_thread.join
+end
+
+def parse_stress_args
+  stress_args = StressArgs.new
+  stress_args.server_addresses = ['localhost:8080']
+  stress_args.test_cases = []
+  stress_args.duration = -1
+  stress_args.channels_per_server = 1
+  stress_args.concurrent_calls = 1
+  stress_args.metrics_port = '8081'
+  OptionParser.new do |opts|
+    opts.on('--server_addresses [LIST]', Array) do |addrs|
+      stress_args.server_addresses = addrs
+    end
+    opts.on('--test_cases cases', Array) do |cases|
+      stress_args.test_cases = (cases.map do |item|
+                                  split = item.split(':')
+                                  [split[0]] * split[1].to_i
+                                end).reduce([], :+)
+    end
+    opts.on('--test_duration_secs [INT]', OptionParser::DecimalInteger) do |time|
+      stress_args.duration = time
+    end
+    opts.on('--num_channels_per_server [INT]', OptionParser::DecimalInteger) do |channels|
+      stress_args.channels_per_server = channels
+    end
+    opts.on('--num_stubs_per_channel [INT]', OptionParser::DecimalInteger) do |stubs|
+      stress_args.concurrent_calls = stubs
+    end
+    opts.on('--metrics_port [port]') do |port|
+      stress_args.metrics_port = port
+    end
+  end.parse!
+  stress_args
+end
+
+def main
+  opts = parse_stress_args
+  start(opts)
+end
+
+if __FILE__ == $0
+  main
+end