1#!/usr/bin/env ruby 2# 3# Copyright 2016 gRPC authors. 4# 5# Licensed under the Apache License, Version 2.0 (the "License"); 6# you may not use this file except in compliance with the License. 7# You may obtain a copy of the License at 8# 9# http://www.apache.org/licenses/LICENSE-2.0 10# 11# Unless required by applicable law or agreed to in writing, software 12# distributed under the License is distributed on an "AS IS" BASIS, 13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14# See the License for the specific language governing permissions and 15# limitations under the License. 16 17ENV['GRPC_ENABLE_FORK_SUPPORT'] = "1" 18fail "forking only supported on linux" unless RUBY_PLATFORM =~ /linux/ 19 20this_dir = File.expand_path(File.dirname(__FILE__)) 21protos_lib_dir = File.join(this_dir, 'lib') 22grpc_lib_dir = File.join(File.dirname(this_dir), 'lib') 23$LOAD_PATH.unshift(grpc_lib_dir) unless $LOAD_PATH.include?(grpc_lib_dir) 24$LOAD_PATH.unshift(protos_lib_dir) unless $LOAD_PATH.include?(protos_lib_dir) 25$LOAD_PATH.unshift(this_dir) unless $LOAD_PATH.include?(this_dir) 26 27require 'grpc' 28require 'end2end_common' 29 30def do_rpc(stub) 31 stub.echo(Echo::EchoRequest.new(request: 'hello'), deadline: Time.now + 300) 32end 33 34def create_channel_creds 35 test_root = File.join(File.dirname(__FILE__), '..', 'spec', 'testdata') 36 files = ['ca.pem', 'client.key', 'client.pem'] 37 creds = files.map { |f| File.open(File.join(test_root, f)).read } 38 GRPC::Core::ChannelCredentials.new(creds[0], creds[1], creds[2]) 39end 40 41def client_cert 42 test_root = File.join(File.dirname(__FILE__), '..', 'spec', 'testdata') 43 cert = File.open(File.join(test_root, 'client.pem')).read 44 fail unless cert.is_a?(String) 45 cert 46end 47 48def run_client(stub) 49 do_rpc(stub) 50 with_logging("parent: GRPC.prefork") { GRPC.prefork } 51 pid = fork do 52 with_logging("child1: GRPC.postfork_child") { GRPC.postfork_child } 53 with_logging("child1: first post-fork RPC") { do_rpc(stub) } 54 with_logging("child1: GRPC.prefork") { GRPC.prefork } 55 pid2 = fork do 56 with_logging("child2: GRPC.postfork_child") { GRPC.postfork_child } 57 with_logging("child2: first post-fork RPC") { do_rpc(stub) } 58 with_logging("child2: second post-fork RPC") { do_rpc(stub) } 59 STDERR.puts "child2: done" 60 end 61 with_logging("child1: GRPC.postfork_parent") { GRPC.postfork_parent } 62 with_logging("child1: second post-fork RPC") { do_rpc(stub) } 63 Process.wait(pid2) 64 STDERR.puts "child1: done" 65 end 66 with_logging("parent: GRPC.postfork_parent") { GRPC.postfork_parent } 67 with_logging("parent: first post-fork RPC") { do_rpc(stub) } 68 with_logging("parent: second post-fork RPC") { do_rpc(stub) } 69 Process.wait pid 70 STDERR.puts "parent: done" 71end 72 73# This is designed to test fork support around three key things: 74# - call credentials (relies on a special background thread) 75# - channel credentials (ownership semantics are interesting for re-creating channels) 76# - channel args (ownership semantics are interesting for re-creating channels) 77def main 78 this_dir = File.expand_path(File.dirname(__FILE__)) 79 echo_server_path = File.join(this_dir, 'echo_server.rb') 80 to_child_r, _to_child_w = IO.pipe 81 to_parent_r, to_parent_w = IO.pipe 82 Process.spawn(RbConfig.ruby, echo_server_path, "--secure", in: to_child_r, out: to_parent_w, err: "server_log") 83 to_child_r.close 84 to_parent_w.close 85 child_port = to_parent_r.gets.strip 86 STDERR.puts "server running on port: #{child_port}" 87 channel_creds = create_channel_creds.compose( 88 GRPC::Core::CallCredentials.new(proc do |args| 89 { 'authorization' => 'test' }.merge(args) 90 end)) 91 stub = Echo::EchoServer::Stub.new( 92 "localhost:#{child_port}", channel_creds, 93 channel_args: { GRPC::Core::Channel::SSL_TARGET => 'foo.test.google.fr' }) 94 2.times do 95 run_client(stub) 96 end 97end 98 99main 100