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#!/usr/bin/env ruby
# Copyright 2016 gRPC authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# 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_pb'
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
channel_args = {}
channel_args[GRPC::Core::Channel::SSL_TARGET] =
config.security_params.server_host_override
opts[:channel_args] = channel_args
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
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)))
@child_threads = []
(0..config.client_channels-1).each do |chan|
gtbss = Grpc::Testing::BenchmarkService::Stub
st = config.server_targets
stub = gtbss.new(st[chan % st.length], cred, **opts)
(0..config.outstanding_rpcs_per_channel-1).each do |r|
@child_threads << Thread.new {
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 *
config.outstanding_rpcs_per_channel))
end
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
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)
pushed_sentinal = false
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) unless pushed_sentinal
# Continue polling on the responses to consume and release resources
pushed_sentinal = true
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
@child_threads.each do |thread|
thread.join
end
end
end
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