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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'
require 'histogram'
require 'src/proto/grpc/testing/services_services'
class Poisson
def interarrival
@lambda_recip * (-Math.log(1.0-rand))
end
def advance
t = @next_time
@next_time += interarrival
t
end
def initialize(lambda)
@lambda_recip = 1.0/lambda
@next_time = Time.now + interarrival
end
end
class BenchmarkClient
def initialize(config)
opts = {}
if config.security_params
if config.security_params.use_test_ca
certs = load_test_certs
cred = GRPC::Core::ChannelCredentials.new(certs[0])
else
cred = GRPC::Core::ChannelCredentials.new()
end
if config.security_params.server_host_override
opts[GRPC::Core::Channel::SSL_TARGET] =
config.security_params.server_host_override
end
else
cred = :this_channel_is_insecure
end
@histres = config.histogram_params.resolution
@histmax = config.histogram_params.max_possible
@start_time = Time.now
@histogram = Histogram.new(@histres, @histmax)
@done = false
(0..config.client_channels-1).each do |i|
Thread.new {
gtsr = Grpc::Testing::SimpleRequest
gtpt = Grpc::Testing::PayloadType
gtp = Grpc::Testing::Payload
simple_params = config.payload_config.simple_params
req = gtsr.new(response_type: gtpt::COMPRESSABLE,
response_size: simple_params.resp_size,
payload: gtp.new(type: gtpt::COMPRESSABLE,
body: nulls(simple_params.req_size)))
case config.load_params.load.to_s
when 'closed_loop'
waiter = nil
when 'poisson'
waiter = Poisson.new(config.load_params.poisson.offered_load /
config.client_channels)
end
gtbss = Grpc::Testing::BenchmarkService::Stub
st = config.server_targets
stub = gtbss.new(st[i % st.length], cred, **opts)
case config.rpc_type
when :UNARY
unary_ping_ponger(req,stub,config,waiter)
when :STREAMING
streaming_ping_ponger(req,stub,config,waiter)
end
}
end
end
def wait_to_issue(waiter)
if waiter
delay = waiter.advance-Time.now
sleep delay if delay > 0
end
end
def unary_ping_ponger(req, stub, config,waiter)
while !@done
wait_to_issue(waiter)
start = Time.now
resp = stub.unary_call(req)
@histogram.add((Time.now-start)*1e9)
end
end
def streaming_ping_ponger(req, stub, config, waiter)
q = EnumeratorQueue.new(self)
resp = stub.streaming_call(q.each_item)
start = Time.now
q.push(req)
resp.each do |r|
@histogram.add((Time.now-start)*1e9)
if !@done
wait_to_issue(waiter)
start = Time.now
q.push(req)
else
q.push(self)
break
end
end
end
def mark(reset)
lat = Grpc::Testing::HistogramData.new(
bucket: @histogram.contents,
min_seen: @histogram.minimum,
max_seen: @histogram.maximum,
sum: @histogram.sum,
sum_of_squares: @histogram.sum_of_squares,
count: @histogram.count
)
elapsed = Time.now-@start_time
if reset
@start_time = Time.now
@histogram = Histogram.new(@histres, @histmax)
end
Grpc::Testing::ClientStats.new(latencies: lat, time_elapsed: elapsed)
end
def shutdown
@done = true
end
end
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