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<!DOCTYPE html>
<html>
<head>
<title>H2O status</title>
<script type="text/javascript">
function $(id) {
return document.getElementById(id);
}
function toArray(list) {
return Array.prototype.map.call(list, function (e) {
return e;
});
}
function fetchJson(url, cb) {
var xhr = new XMLHttpRequest();
xhr.open("GET", url, true);
xhr.onreadystatechange = function () {
if (xhr.readyState != 4)
return;
if (xhr.status == 200) {
try {
cb(JSON.parse(xhr.responseText));
} catch (e) {
console.log(e);
cb(null);
}
} else {
cb(null);
}
}
xhr.send();
}
var update = function () {
var inFlight = false;
var timerId = null;
return function (force) {
if (timerId != null) {
clearTimeout(timerId);
timerId = null;
}
if (!inFlight && (force || $("refresh").checked)) {
inFlight = true;
update.doUpdate(function (result) {
inFlight = false;
if (result) {
if ($("refresh").checked) {
timerId = setTimeout(function () {
timerId = null;
update(false);
}.bind(this), 1000);
}
} else {
$("refresh").checked = false;
}
}.bind(this));
}
}
}();
update.doUpdate = function update(cb) {
var json_uri = (location.pathname + "/json").replace(/\/{2,}/g, "/");
fetchJson(json_uri, function (json) {
if (json == null) {
alert("an error occurred while trying to receive the status");
cb(false);
return;
}
for (var k in json) {
var slot = $("value:" + k);
if (slot != null)
slot.innerHTML = json[k] != null ? json[k] : "-";
}
$("value:uptime").innerHTML = (function () {
var d = json["uptime"];
if (isNaN(d))
return "-";
var s = "";
if (d >= 86400)
s += Math.floor(d / 86400) + "d";
if (d >= 3600)
s += Math.floor(d / 3600 % 24) + "h";
if (d >= 60)
s += Math.floor(d / 60 % 60) + "m";
s += (d % 60) + "s";
return s;
})();
function stringifyColumn(req, field) {
if (field == "id") {
var s = req["connection-id"];
if (req["http1.request-index"] != "-") {
s += "-" + req["http1.request-index"];
} else if (req["http2.stream-id"] != "-") {
s += "-" + req["http2.stream-id"];
}
return s;
} else if (field.match(/^HTTP\/2/)) {
if (req["http2.priority.actual.parent"] == "-")
return "-";
return ["actual.parent", "actual.weight", "received.parent", "received.weight", "received.exclusive"].map(function (n) {
return req["http2.priority." + n];
}).join("/");
} else if (field.match(/^SSL/)) {
if (req["ssl.protocol-version"] == "-")
return "-";
return req["ssl.protocol-version"] + "/" + req["ssl.cipher"] + "/" + (req["ssl.session-reused"] == "1" ? "Y" : "N");
} else if (field == "client") {
return req.host;
} else if (field == "URI") {
var scheme = req["ssl.cipher-bits"] != "-" ? "https" : "http";
return scheme + "://" + req.authority + req.path + req.query;
}
return req[field];
}
var table = $("reqs-in-flight");
var columns = toArray(table.getElementsByTagName("th"));
var oldRows = toArray(table.getElementsByTagName("tr"));
oldRows.shift(); // first tr is a list of headers
json.requests.map(function (req) {
if (!req.method)
return;
var row = document.createElement("tr");
columns.map(function (column) {
var text = stringifyColumn(req, column.innerHTML);
row.insertBefore((function () {
var node = document.createElement("td");
node.insertBefore(document.createTextNode(text), null);
return node;
})(), null);
table.insertBefore(row, oldRows.length != 0 ? oldRows[0] : null);
});
});
while (oldRows.length != 0)
table.removeChild(oldRows.shift());
cb(true);
});
}
window.addEventListener("load", function () {
$("refresh").addEventListener("click", function () {
update(false);
});
update(true);
});
</script>
<style type="text/css">
body {
font-family: sans-serif;
}
#summary {
border: 0;
margin: 1em 0;
}
#summary th,td {
border: 0;
margin: 0;
padding: 0;
}
#summary th {
font-weight: normal;
text-align: right;
padding-right: 0.5em;
}
#reqs-in-flight {
border: 1px solid gray;
border-collapse: collapse;
margin: 1em 0;
width: 100%;
}
#reqs-in-flight caption {
font-weight: bold;
margin: 1em auto 0.5em auto;
}
#reqs-in-flight td,th {
border: 1px solid gray;
line-height: 1.2em;
padding: 0.3em 0.5em;
}
#reqs-in-flight th {
text-align: center;
background: #ddd;
}
#reqs-in-flight td {
vertical-align: top;
}
</style>
</head>
<body>
<table id="summary">
<tr><th>Server Version:<td id="value:server-version">-
<tr><th>OpenSSL Version: <td id="value:openssl-version">-
<tr><th>Current Time: <td id="value:current-time">-
<tr><th>Restart Time: <td id="value:restart-time">-
<tr><th>Uptime: <td id="value:uptime">-
<tr><th>Generation: <td id="value:generation">-
<tr><th>Connections: <td><span id="value:connections">-</span> / <span id="value:max-connections"></span>
<tr><th>Worker threads: <td id="value:worker-threads">-
<tr><th>Refresh:<td><input id="refresh" type="checkbox">
</table>
<table id="reqs-in-flight">
<caption>Requests In-flight</caption>
<tr>
<th>id</th>
<th>HTTP/2<span style="font-weight: normal; font-size: 80%"><br>Pa/Wa/Pr/Wr/X</span></th>
<th>SSL<span style="font-weight: normal; font-size: 80%"><br>Ver/Cipher/Resume</th>
<th>client</th>
<th>method</th>
<th>URI</th>
<th>protocol</th>
<th>referer</th>
<th>user-agent</th>
</tr>
</table>
</body>
</html>
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