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inflightRequests.js
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inflightRequests.js
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'use strict';
// external files
var _ = require('lodash');
var assert = require('chai').assert;
var bunyan = require('bunyan');
var restify = require('restify');
// local files
var clients = require('../lib');
describe('inflightRequests', function () {
var SERVER;
var HTTPCLIENT = clients.createHttpClient({
url: 'http://localhost:3000/',
requestTimeout: 100
});
var STRINGCLIENT = clients.createStringClient({
url: 'http://localhost:3000/',
requestTimeout: 100
});
var LOG = bunyan.createLogger({
name: 'clientlog'
});
beforeEach(function (done) {
assert.strictEqual(HTTPCLIENT.inflightRequests(), 0);
assert.strictEqual(STRINGCLIENT.inflightRequests(), 0);
SERVER = restify.createServer({
name: 'unittest',
log: LOG
});
SERVER.get('/200', function (req, res, next) {
res.send(200, { hello: 'world' });
return next();
});
SERVER.get('/500', function (req, res, next) {
res.send(500, { empty: 'world' });
return next();
});
SERVER.get('/timeout', function (req, res, next) {
setTimeout(function () {
return next();
}, 1000);
});
SERVER.use(restify.plugins.queryParser());
SERVER.listen(3000, done);
});
afterEach(function (done) {
assert.strictEqual(HTTPCLIENT.inflightRequests(), 0);
assert.strictEqual(STRINGCLIENT.inflightRequests(), 0);
HTTPCLIENT.close();
STRINGCLIENT.close();
SERVER.close(done);
});
it('StringClient should increment and decrement inflight requests',
function (done) {
// request count decremented right before callback is fired.
STRINGCLIENT.get('/200', function (err, req, res, data) {
assert.ifError(err);
assert.strictEqual(STRINGCLIENT.inflightRequests(), 0);
return done();
});
// after firing one request
assert.strictEqual(STRINGCLIENT.inflightRequests(), 1);
});
it('StringClient should increment and decrement inflight on connection ' +
'timeout',
function (done) {
// setup client to point to unresolvable IP
var client = clients.createStringClient({
url: 'http://10.255.255.1/',
connectTimeout: 100,
retry: {
minTimeout: 100,
maxTimeout: 500,
// ensure even with retries we do correct counting
retries: 3
}
});
client.get('/foo', function (err, req, res, data) {
assert.strictEqual(err.name, 'ConnectTimeoutError');
assert.strictEqual(STRINGCLIENT.inflightRequests(), 0);
return done();
});
assert.strictEqual(client.inflightRequests(), 1);
});
it('StringClient should increment and decrement inflight on request ' +
'timeout', function (done) {
// setup client to point to unresolvable IP
STRINGCLIENT.get('/timeout', function (err, req, res, data) {
assert.strictEqual(err.name, 'RequestTimeoutError');
assert.strictEqual(STRINGCLIENT.inflightRequests(), 0);
return done();
});
assert.strictEqual(STRINGCLIENT.inflightRequests(), 1);
});
it('HttpClient should increment and decrement inflight requests',
function (done) {
HTTPCLIENT.get('/200', function (err, req) {
assert.ifError(err);
assert.strictEqual(HTTPCLIENT.inflightRequests(), 1);
req.on('result', function (_err, res) {
assert.ifError(_err);
res.on('data', _.noop);
res.on('end', function () {
assert.strictEqual(HTTPCLIENT.inflightRequests(), 0);
return done();
});
});
});
});
it('HttpClient should increment and decrement connect timeout',
function (done) {
// setup client to point to unresolvable IP
var client = clients.createHttpClient({
url: 'http://10.255.255.1/',
connectTimeout: 100,
retry: false
});
client.get('/timeout', function (err, req) {
assert.ok(err);
assert.strictEqual(err.name, 'ConnectTimeoutError');
assert.strictEqual(client.inflightRequests(), 0);
return done();
});
assert.strictEqual(client.inflightRequests(), 1);
});
it('HttpClient should increment and decrement request timeout',
function (done) {
HTTPCLIENT.get('/timeout', function (err, req) {
// no connect timeout
assert.ifError(err);
assert.strictEqual(HTTPCLIENT.inflightRequests(), 1);
req.on('result', function (_err, res) {
assert.ok(_err);
assert.strictEqual(_err.name, 'RequestTimeoutError');
assert.notOk(res);
assert.strictEqual(HTTPCLIENT.inflightRequests(), 0);
return done();
});
});
});
it('HttpClient should increment and decrement on forced req abort',
function (done) {
var client = clients.createHttpClient({
url: 'http://localhost:3000'
});
client.get('/timeout', function (err, req) {
// no connect timeout
assert.ifError(err);
assert.strictEqual(client.inflightRequests(), 1);
req.on('result', function (_err, res) {
assert.strictEqual(client.inflightRequests(), 0);
assert.ok(_err);
assert.ok(_err.message, 'socket hang up');
assert.isNull(res);
return done();
});
req.abort();
});
});
it('should count multiple inflight requests', function (done) {
STRINGCLIENT.get('/200', _.noop);
assert.strictEqual(STRINGCLIENT.inflightRequests(), 1);
STRINGCLIENT.get('/200', _.noop);
assert.strictEqual(STRINGCLIENT.inflightRequests(), 2);
STRINGCLIENT.get('/200', _.noop);
assert.strictEqual(STRINGCLIENT.inflightRequests(), 3);
STRINGCLIENT.get('/200', _.noop);
assert.strictEqual(STRINGCLIENT.inflightRequests(), 4);
setTimeout(function () {
// wait for all requests to complete
assert.strictEqual(STRINGCLIENT.inflightRequests(), 0);
return done();
}, 500);
});
});