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-rw-r--r--src/node/performance/benchmark_client_express.js287
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diff --git a/src/node/performance/benchmark_client_express.js b/src/node/performance/benchmark_client_express.js
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-/*
- *
- * Copyright 2015 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.
- *
- */
-
-/**
- * Benchmark client module
- * @module
- */
-
-'use strict';
-
-var fs = require('fs');
-var path = require('path');
-var util = require('util');
-var EventEmitter = require('events');
-var http = require('http');
-var https = require('https');
-
-var async = require('async');
-var _ = require('lodash');
-var PoissonProcess = require('poisson-process');
-var Histogram = require('./histogram');
-
-/**
- * Convert a time difference, as returned by process.hrtime, to a number of
- * nanoseconds.
- * @param {Array.<number>} time_diff The time diff, represented as
- * [seconds, nanoseconds]
- * @return {number} The total number of nanoseconds
- */
-function timeDiffToNanos(time_diff) {
- return time_diff[0] * 1e9 + time_diff[1];
-}
-
-function BenchmarkClient(server_targets, channels, histogram_params,
- security_params) {
- var options = {
- method: 'PUT',
- headers: {
- 'Content-Type': 'application/json'
- }
- };
- var protocol;
- if (security_params) {
- var ca_path;
- protocol = https;
- this.request = _.bind(https.request, https);
- if (security_params.use_test_ca) {
- ca_path = path.join(__dirname, '../test/data/ca.pem');
- var ca_data = fs.readFileSync(ca_path);
- options.ca = ca_data;
- }
- if (security_params.server_host_override) {
- var host_override = security_params.server_host_override;
- options.servername = host_override;
- }
- } else {
- protocol = http;
- }
-
- this.request = _.bind(protocol.request, protocol);
-
- this.client_options = [];
-
- for (var i = 0; i < channels; i++) {
- var host_port;
- host_port = server_targets[i % server_targets.length].split(':');
- var new_options = _.assign({hostname: host_port[0], port: +host_port[1]}, options);
- this.client_options[i] = new_options;
- }
-
- this.histogram = new Histogram(histogram_params.resolution,
- histogram_params.max_possible);
-
- this.running = false;
-
- this.pending_calls = 0;
-}
-
-util.inherits(BenchmarkClient, EventEmitter);
-
-function startAllClients(client_options_list, outstanding_rpcs_per_channel,
- makeCall, emitter) {
- _.each(client_options_list, function(client_options) {
- _.times(outstanding_rpcs_per_channel, function() {
- makeCall(client_options);
- });
- });
-}
-
-BenchmarkClient.prototype.startClosedLoop = function(
- outstanding_rpcs_per_channel, rpc_type, req_size, resp_size, generic) {
- var self = this;
-
- var options = {};
-
- self.running = true;
-
- if (rpc_type == 'UNARY') {
- options.path = '/serviceProto.BenchmarkService.service/unaryCall';
- } else {
- self.emit('error', new Error('Unsupported rpc_type: ' + rpc_type));
- }
-
- if (generic) {
- self.emit('error', new Error('Generic client not supported'));
- }
-
- self.last_wall_time = process.hrtime();
- self.last_usage = process.cpuUsage();
-
- var argument = {
- response_size: resp_size,
- payload: {
- body: '0'.repeat(req_size)
- }
- };
-
- function makeCall(client_options) {
- if (self.running) {
- self.pending_calls++;
- var start_time = process.hrtime();
- function finishCall(success) {
- if (success) {
- var time_diff = process.hrtime(start_time);
- self.histogram.add(timeDiffToNanos(time_diff));
- }
- makeCall(client_options);
- self.pending_calls--;
- if ((!self.running) && self.pending_calls == 0) {
- self.emit('finished');
- }
- }
- var req = self.request(client_options, function(res) {
- var res_data = '';
- res.on('data', function(data) {
- res_data += data;
- });
- res.on('end', function() {
- JSON.parse(res_data);
- finishCall(true);
- });
- });
- req.write(JSON.stringify(argument));
- req.end();
- req.on('error', function(error) {
- if (error.code === 'ECONNRESET' || error.code === 'ETIMEDOUT') {
- finishCall(false);
- return;
- }
- self.emit('error', new Error('Client error: ' + error.message));
- self.running = false;
- });
- }
- }
-
- startAllClients(_.map(self.client_options, _.partial(_.assign, options)),
- outstanding_rpcs_per_channel, makeCall, self);
-};
-
-BenchmarkClient.prototype.startPoisson = function(
- outstanding_rpcs_per_channel, rpc_type, req_size, resp_size, offered_load,
- generic) {
- var self = this;
-
- var options = {};
-
- self.running = true;
-
- if (rpc_type == 'UNARY') {
- options.path = '/serviceProto.BenchmarkService.service/unaryCall';
- } else {
- self.emit('error', new Error('Unsupported rpc_type: ' + rpc_type));
- }
-
- if (generic) {
- self.emit('error', new Error('Generic client not supported'));
- }
-
- self.last_wall_time = process.hrtime();
- self.last_usage = process.cpuUsage();
-
- var argument = {
- response_size: resp_size,
- payload: {
- body: '0'.repeat(req_size)
- }
- };
-
- function makeCall(client_options, poisson) {
- if (self.running) {
- self.pending_calls++;
- var start_time = process.hrtime();
- var req = self.request(client_options, function(res) {
- var res_data = '';
- res.on('data', function(data) {
- res_data += data;
- });
- res.on('end', function() {
- JSON.parse(res_data);
- var time_diff = process.hrtime(start_time);
- self.histogram.add(timeDiffToNanos(time_diff));
- self.pending_calls--;
- if ((!self.running) && self.pending_calls == 0) {
- self.emit('finished');
- }
- });
- });
- req.write(JSON.stringify(argument));
- req.end();
- req.on('error', function(error) {
- self.emit('error', new Error('Client error: ' + error.message));
- self.running = false;
- });
- } else {
- poisson.stop();
- }
- }
-
- var averageIntervalMs = (1 / offered_load) * 1000;
-
- startAllClients(_.map(self.client_options, _.partial(_.assign, options)),
- outstanding_rpcs_per_channel, function(opts){
- var p = PoissonProcess.create(averageIntervalMs, function() {
- makeCall(opts, p);
- });
- p.start();
- }, self);
-};
-
-/**
- * Return curent statistics for the client. If reset is set, restart
- * statistic collection.
- * @param {boolean} reset Indicates that statistics should be reset
- * @return {object} Client statistics
- */
-BenchmarkClient.prototype.mark = function(reset) {
- var wall_time_diff = process.hrtime(this.last_wall_time);
- var usage_diff = process.cpuUsage(this.last_usage);
- var histogram = this.histogram;
- if (reset) {
- this.last_wall_time = process.hrtime();
- this.last_usage = process.cpuUsage();
- this.histogram = new Histogram(histogram.resolution,
- histogram.max_possible);
- }
-
- return {
- latencies: {
- bucket: histogram.getContents(),
- min_seen: histogram.minimum(),
- max_seen: histogram.maximum(),
- sum: histogram.getSum(),
- sum_of_squares: histogram.sumOfSquares(),
- count: histogram.getCount()
- },
- time_elapsed: wall_time_diff[0] + wall_time_diff[1] / 1e9,
- time_user: usage_diff.user / 1000000,
- time_system: usage_diff.system / 1000000
- };
-};
-
-/**
- * Stop the clients.
- * @param {function} callback Called when the clients have finished shutting
- * down
- */
-BenchmarkClient.prototype.stop = function(callback) {
- this.running = false;
- this.on('finished', callback);
-};
-
-module.exports = BenchmarkClient;
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-20 04:03:51 +0000