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#!/usr/bin/env ruby
# 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.
# interop_server is a Testing app that runs a gRPC interop testing server.
#
# It helps validate interoperation b/w gRPC in different environments
#
# Helps validate interoperation b/w different gRPC implementations.
#
# Usage: $ path/to/interop_server.rb --port
this_dir = File.expand_path(File.dirname(__FILE__))
lib_dir = File.join(File.dirname(File.dirname(this_dir)), 'lib')
$LOAD_PATH.unshift(lib_dir) unless $LOAD_PATH.include?(lib_dir)
$LOAD_PATH.unshift(this_dir) unless $LOAD_PATH.include?(this_dir)
require 'forwardable'
require 'optparse'
require 'grpc'
require 'test/cpp/interop/test_services'
require 'test/cpp/interop/messages'
require 'test/cpp/interop/empty'
# loads the certificates by the test server.
def load_test_certs
this_dir = File.expand_path(File.dirname(__FILE__))
data_dir = File.join(File.dirname(File.dirname(this_dir)), 'spec/testdata')
files = ['ca.pem', 'server1.key', 'server1.pem']
files.map { |f| File.open(File.join(data_dir, f)).read }
end
# creates a ServerCredentials from the test certificates.
def test_server_creds
certs = load_test_certs
GRPC::Core::ServerCredentials.new(nil, certs[1], certs[2])
end
# produces a string of null chars (\0) of length l.
def nulls(l)
fail 'requires #{l} to be +ve' if l < 0
[].pack('x' * l).force_encoding('utf-8')
end
# A EnumeratorQueue wraps a Queue yielding the items added to it via each_item.
class EnumeratorQueue
extend Forwardable
def_delegators :@q, :push
def initialize(sentinel)
@q = Queue.new
@sentinel = sentinel
end
def each_item
return enum_for(:each_item) unless block_given?
loop do
r = @q.pop
break if r.equal?(@sentinel)
fail r if r.is_a? Exception
yield r
end
end
end
# A runnable implementation of the schema-specified testing service, with each
# service method implemented as required by the interop testing spec.
class TestTarget < Grpc::Testing::TestService::Service
include Grpc::Testing
include Grpc::Testing::PayloadType
def empty_call(_empty, _call)
Empty.new
end
def unary_call(simple_req, _call)
req_size = simple_req.response_size
SimpleResponse.new(payload: Payload.new(type: :COMPRESSABLE,
body: nulls(req_size)))
end
def streaming_input_call(call)
sizes = call.each_remote_read.map { |x| x.payload.body.length }
sum = sizes.inject { |s, x| s + x }
StreamingInputCallResponse.new(aggregated_payload_size: sum)
end
def streaming_output_call(req, _call)
cls = StreamingOutputCallResponse
req.response_parameters.map do |p|
cls.new(payload: Payload.new(type: req.response_type,
body: nulls(p.size)))
end
end
def full_duplex_call(reqs)
# reqs is a lazy Enumerator of the requests sent by the client.
q = EnumeratorQueue.new(self)
cls = StreamingOutputCallResponse
Thread.new do
begin
reqs.each do |req|
logger.info("read #{req.inspect}")
resp_size = req.response_parameters[0].size
resp = cls.new(payload: Payload.new(type: req.response_type,
body: nulls(resp_size)))
q.push(resp)
end
logger.info('finished reads')
q.push(self)
rescue StandardError => e
q.push(e) # share the exception with the enumerator
end
end
q.each_item
end
def half_duplex_call(reqs)
# TODO: update with unique behaviour of the half_duplex_call if that's
# ever required by any of the tests.
full_duplex_call(reqs)
end
end
# validates the the command line options, returning them as a Hash.
def parse_options
options = {
'port' => nil,
'secure' => false
}
OptionParser.new do |opts|
opts.banner = 'Usage: --port port'
opts.on('--port PORT', 'server port') do |v|
options['port'] = v
end
opts.on('-s', '--use_tls', 'require a secure connection?') do |v|
options['secure'] = v
end
end.parse!
if options['port'].nil?
fail(OptionParser::MissingArgument, 'please specify --port')
end
options
end
def main
opts = parse_options
host = "0.0.0.0:#{opts['port']}"
s = GRPC::RpcServer.new
if opts['secure']
s.add_http2_port(host, test_server_creds)
logger.info("... running securely on #{host}")
else
s.add_http2_port(host)
logger.info("... running insecurely on #{host}")
end
s.handle(TestTarget)
s.run
end
main
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