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/*
*
* 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.
*
*/
'use strict';
var _ = require('lodash');
var grpc = require('../../..');
var interop_client = require('../interop/interop_client');
var MetricsServer = require('./metrics_server');
var running;
var metrics_server;
var start_time;
var query_count;
function makeCall(client, test_cases) {
if (!running) {
return;
}
var test_case = test_cases[_.random(test_cases.length - 1)];
interop_client.test_cases[test_case].run(client, function() {
query_count += 1;
makeCall(client, test_cases);
});
}
function makeCalls(client, test_cases, parallel_calls_per_channel) {
_.times(parallel_calls_per_channel, function() {
makeCall(client, test_cases);
});
}
function getQps() {
var diff = process.hrtime(start_time);
var seconds = diff[0] + diff[1] / 1e9;
return {long_value: query_count / seconds};
}
function start(server_addresses, test_cases, channels_per_server,
parallel_calls_per_channel, metrics_port) {
running = true;
/* Assuming that we are not calling unimplemented_method. The client class
* used by empty_unary is (currently) the client class used by every interop
* test except unimplemented_method */
var Client = interop_client.test_cases.empty_unary.Client;
/* Make channels_per_server clients connecting to each server address */
var channels = _.flatten(_.times(
channels_per_server, _.partial(_.map, server_addresses, function(address) {
return new Client(address, grpc.credentials.createInsecure());
})));
metrics_server = new MetricsServer(metrics_port);
metrics_server.registerGauge('qps', getQps);
start_time = process.hrtime();
query_count = 0;
_.each(channels, _.partial(makeCalls, _, test_cases,
parallel_calls_per_channel));
metrics_server.start();
}
function stop() {
running = false;
metrics_server.shutdown();
console.log('QPS: ' + getQps().long_value);
}
function main() {
var parseArgs = require('minimist');
var argv = parseArgs(process.argv, {
string: ['server_addresses', 'test_cases', 'metrics_port'],
default: {'server_addresses': 'localhost:8080',
'test_duration_secs': -1,
'num_channels_per_server': 1,
'num_stubs_per_channel': 1,
'metrics_port': '8081'}
});
var server_addresses = argv.server_addresses.split(',');
/* Generate an array of test cases, where the number of instances of each name
* corresponds to the number given in the argument.
* e.g. 'empty_unary:1,large_unary:2' =>
* ['empty_unary', 'large_unary', 'large_unary'] */
var test_cases = _.flatten(_.map(argv.test_cases.split(','), function(value) {
var split = value.split(':');
return _.times(split[1], _.constant(split[0]));
}));
start(server_addresses, test_cases, argv.num_channels_per_server,
argv.num_stubs_per_channel, argv.metrics_port);
if (argv.test_duration_secs > -1) {
setTimeout(stop, argv.test_duration_secs * 1000);
}
}
main();
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