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#!/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.
# Worker and worker service implementation
this_dir = File.expand_path(File.dirname(__FILE__))
lib_dir = File.join(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 'grpc'
# produces a string of null chars (\0 aka pack 'x') of length l.
def nulls(l)
fail 'requires #{l} to be +ve' if l < 0
[].pack('x' * l).force_encoding('ascii-8bit')
end
# load the test-only certificates
def load_test_certs
this_dir = File.expand_path(File.dirname(__FILE__))
data_dir = File.join(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
# 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 PingPongEnumerator reads requests and responds one-by-one when enumerated
# via #each_item
class PingPongEnumerator
def initialize(reqs)
@reqs = reqs
end
def each_item
return enum_for(:each_item) unless block_given?
sr = Grpc::Testing::SimpleResponse
pl = Grpc::Testing::Payload
@reqs.each do |req|
yield sr.new(payload: pl.new(body: nulls(req.response_size)))
end
end
end
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