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132 lines
4.9 KiB
132 lines
4.9 KiB
<html>
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<meta charset="ISO-8859-1">
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<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
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<head>
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<title>HotROD - Rides On Demand</title>
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<script src="./code.jquery.com_jquery-3.7.0.min.js"></script>
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<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
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<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
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<style>
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.uuid { margin-top: 15px; }
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.hotrod-button { padding: 20px; cursor: pointer; margin-top: 10px; }
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.hotrod-button:hover { cursor: pointer; filter: brightness(85%); }
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#hotrod-log { margin-top: 15px; }
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#tip { margin-top: 15px; }
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</style>
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</head>
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<body>
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<div class="container">
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<div class="uuid alert alert-info"></div>
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<center>
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<h1>Hot R.O.D.</h1>
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<h4>🚗 <em>Rides On Demand</em> 🚗</h4>
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<div class="row">
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<div class="col-md-3 col-sm-6">
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<span
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class="btn btn-info btn-block hotrod-button"
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data-customer="123">Rachel's Floral Designs</span>
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</div>
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<div class="col-md-3 col-sm-6">
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<span
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class="btn btn-info btn-block hotrod-button"
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data-customer="392">Trom Chocolatier</span>
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</div>
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<div class="col-md-3 col-sm-6">
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<span
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class="btn btn-info btn-block hotrod-button"
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data-customer="731">Japanese Desserts</span>
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</div>
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<div class="col-md-3 col-sm-6">
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<span
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class="btn btn-info btn-block hotrod-button"
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data-customer="567">Amazing Coffee Roasters</span>
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</div>
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</div>
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<div id="tip">Click on customer name above to order a car.</div>
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<div id="hotrod-log" class="lead"></div>
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</center>
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</div>
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</body>
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<script>
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function formatDuration(duration) {
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const d = duration / (1000000 * 1000 * 60);
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const units = 'min';
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return Math.round(d) + units;
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}
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function parseTraceResponse(value) {
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const VERSION = '00';
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const VERSION_PART = '(?!ff)[\\da-f]{2}';
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const TRACE_ID_PART = '(?![0]{32})[\\da-f]{32}';
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const PARENT_ID_PART = '(?![0]{16})[\\da-f]{16}';
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const FLAGS_PART = '[\\da-f]{2}';
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const TRACE_PARENT_REGEX = new RegExp(
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`^\\s?(${VERSION_PART})-(${TRACE_ID_PART})-(${PARENT_ID_PART})-(${FLAGS_PART})(-.*)?\\s?$`
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);
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const match = TRACE_PARENT_REGEX.exec(value);
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return (match) ? match[2] : null;
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}
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const clientUUID = Math.round(Math.random() * 10000);
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var lastRequestID = 0;
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$(".uuid").html(`Your web client's id: <strong>${clientUUID}</strong>`);
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$(".hotrod-button").click(function(evt) {
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lastRequestID++;
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const requestID = clientUUID + "-" + lastRequestID;
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const freshCar = $($("#hotrod-log").prepend('<div class="fresh-car"><em>Dispatching a car...[req: '+requestID+']</em></div>').children()[0]);
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const customer = evt.target.dataset.customer;
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const headers = {
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'baggage': 'session=' + clientUUID + ', request=' + requestID
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};
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console.log('sending headers', headers);
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// Use current URI as basepath for ajax requests
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var pathPrefix = window.location.pathname;
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pathPrefix = pathPrefix != "/" ? pathPrefix : '';
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// TODO this should be done on page load, not on every button click
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var config = {};
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$.ajax(pathPrefix + '/config?nonse=' + Math.random(), {
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method: 'GET',
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success: function(data, textStatus) {
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console.log('config', data);
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config = data;
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},
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});
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const before = Date.now();
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$.ajax(pathPrefix + '/dispatch?customer=' + customer + '&nonse=' + Math.random(), {
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headers: headers,
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method: 'GET',
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success: function(data, textStatus, xhr) {
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const after = Date.now();
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const traceResponse = xhr.getResponseHeader('traceresponse');
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const traceID = parseTraceResponse(traceResponse);
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console.log('response', data);
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console.log('traceResponse', traceResponse, 'traceID', traceID);
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const duration = formatDuration(data.ETA);
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var traceLink = '';
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if (config && config['jaeger']) {
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const jaeger = config['jaeger'];
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const findURL = `/search?limit=20&lookback=1h&service=frontend&tags=%7B%22driver%22%3A%22${data.Driver}%22%7D`;
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traceLink = ` [<a href="${jaeger}${findURL}" target="_blank">find trace</a>]`;
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if (traceID) {
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traceLink += ` [<a href="${jaeger}/trace/${traceID}" target="_blank">open trace</a>]`;
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}
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}
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freshCar.html(`HotROD <b>${data.Driver}</b> arriving in ${duration} [req: ${requestID}, latency: ${after-before}ms] ${traceLink}`);
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},
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});
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});
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</script>
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</html>
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