turbobreaker
Version:
Exposes circuit breaker metrics through a Hystrix compliant stream
220 lines (218 loc) • 6.16 kB
HTML
<html lang="en">
<head>
<title>Code coverage report for src/turbobreaker.js</title>
<meta charset="utf-8">
<link rel="stylesheet" href="../prettify.css">
<link rel="stylesheet" href="../base.css">
<style type='text/css'>
div.coverage-summary .sorter {
background-image: url(../sort-arrow-sprite.png);
}
</style>
</head>
<body>
<div class="header high">
<h1>Code coverage report for <span class="entity">src/turbobreaker.js</span></h1>
<h2>
Statements: <span class="metric">100% <small>(44 / 44)</small></span>
Branches: <span class="metric">100% <small>(20 / 20)</small></span>
Functions: <span class="metric">100% <small>(11 / 11)</small></span>
Lines: <span class="metric">100% <small>(27 / 27)</small></span>
Ignored: <span class="metric">1 branch</span>
</h2>
<div class="path"><a href="../index.html">All files</a> » <a href="index.html">src/</a> » turbobreaker.js</div>
</div>
<div class="body">
<pre><table class="coverage">
<tr><td class="line-count">1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59</td><td class="line-coverage"><span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-yes">1</span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-yes">1</span>
<span class="cline-any cline-yes">1</span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-yes">1</span>
<span class="cline-any cline-yes">1</span>
<span class="cline-any cline-yes">7</span>
<span class="cline-any cline-yes">5</span>
<span class="cline-any cline-yes">5</span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-yes">7</span>
<span class="cline-any cline-yes">7</span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-yes">3</span>
<span class="cline-any cline-yes">5</span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-yes">7</span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-yes">7</span>
<span class="cline-any cline-yes">6</span>
<span class="cline-any cline-yes">6</span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-yes">5</span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-yes">5</span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-yes">5</span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-yes">5</span>
<span class="cline-any cline-yes">5</span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-yes">5</span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-yes">1</span>
<span class="cline-any cline-yes">1</span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-yes">7</span>
<span class="cline-any cline-yes">7</span>
<span class="cline-any cline-neutral"> </span>
<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">import http from 'http';
import {parse} from 'url';
import 'es6-collections';
const HYSTRIX_STREAM_PATH = '/hystrix.stream';
const clients = new Set();
const noop = () => {};
export class TurboBreaker {
constructor(config = {}, callback = noop) {
if (typeof config === 'function') {
callback = config;
config = {};
}
this.config = config;
this.server = this.createServer(callback);
}
command(data) {
clients.forEach(res => {
res.write("data: " + JSON.stringify(data) + "\n\n");
});
}
stop() {
this.server.close();
}
createServer(callback) {
const server = http.createServer((req, res) => {
const path = parse(req.url).path;
if (path === HYSTRIX_STREAM_PATH) {
// Stop the connection from timing out:
req.setTimeout(0);
// Get the client to understand us:
res.writeHead(200, {
'Content-Type': 'text/event-stream',
'Cache-Control': 'no-cache',
'Connection': 'keep-alive'
});
res.write("\n");
req.on('close', () => {
clients.delete(res);
});
clients.add(res);
} else {
// Reject the request:
res.writeHead(404);
res.end();
}
});
server.listen(this.config.port || 8080, callback);
return server;
}
}</pre></td></tr>
</table></pre>
</div>
<div class="footer">
<div class="meta">Generated by <a href="http://istanbul-js.org/" target="_blank">istanbul</a> at Fri Sep 04 2015 15:10:43 GMT-0700 (PDT)</div>
</div>
<script src="../prettify.js"></script>
<script>
window.onload = function () {
if (typeof prettyPrint === 'function') {
prettyPrint();
}
};
</script>
<script src="../sorter.js"></script>
</body>
</html>