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index.html
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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<link rel="icon" href="favicon.png">
<title>ADS-B Massive Visualizer</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.9.4/leaflet.min.css" />
<style>
:root {
--progress: 0%;
--progress-background-color1: #320;
--progress-foreground-color1: #840;
--progress-background-color2: #330;
--progress-foreground-color2: #880;
--progress-background-color3: #033;
--progress-foreground-color3: #088;
--progress-background-color4: #333;
--progress-foreground-color4: #666;
--progress-background-color: var(--progress-background-color4);
--progress-foreground-color: var(--progress-foreground-color4);
--report-width: 0%;
}
* {
box-sizing: border-box;
}
html, body {
background: #101213;
width: 100%;
height: 100%;
padding: 0;
margin: 0;
}
body {
display: grid;
grid-template-columns: auto var(--report-width);
grid-template-rows: fit-content(10%) fit-content(2em) 1em auto;
grid-gap: 0;
}
#query {
grid-column: span 2;
width: 100%;
min-width: 100%;
max-width: 100vw;
height: 4.5em;
max-height: 50vh;
margin: 0;
padding: .5em;
outline: none;
border: none;
background: #101213;
color: lightgray;
font-size: 14pt;
border-bottom: 1px #333 solid;
}
#map {
width: 100%;
height: 100%;
background: #111;
image-rendering: pixelated;
}
.leaflet-fade-anim .leaflet-popup {
transition: none;
font-family: monospace;
}
.leaflet-control-attribution {
font-size: 12pt;
}
#error {
display: none;
position: absolute;
z-index: 1001;
bottom: max(5%, 1em);
left: 50%;
transform: translate(-50%, 0);
background: #300;
color: white;
font-family: monospace;
white-space: pre-wrap;
font-size: 16pt;
padding: 1em;
min-width: 50%;
max-width: 80%;
}
#selection {
display: none;
position: absolute;
z-index: 1001;
border: 1px dashed white;
backdrop-filter: brightness(150%);
-webkit-backdrop-filter: brightness(150%); /* Safari */
}
#stats {
grid-column: span 2;
background: linear-gradient(to right,
var(--progress-background-color) 0%,
var(--progress-foreground-color) var(--progress),
var(--progress-background-color) var(--progress));
color: white;
padding-right: .5em;
font-family: monospace;
text-align: right;
}
#examples {
grid-column: span 2;
background: #202020;
color: white;
font-size: 12pt;
font-family: monospace;
padding: .125em .5em;
}
#examples span {
display: inline-block;
padding: .25em .5em;
background: #444;
user-select: none;
}
#examples span:hover {
background: #840;
cursor: pointer;
}
#examples span.selected {
background: #666;
}
#report {
color: white;
font-size: 12pt;
font-family: monospace;
background: #202020;
padding: .5em;
display: none;
max-height: 100%;
overflow-y: scroll;
}
#report div {
margin-bottom: 1em;
white-space: pre-wrap;
color: lightgray;
}
#report a {
color: white;
border-bottom: 1px dashed #888;
cursor: pointer;
}
#report a:hover {
color: #FC0;
background: black;
border-bottom: 1px dashed #FC0;
box-shadow: 0px 0px 10px rgba(0,0,0,1);
font-weight: bold;
}
#picture {
position: absolute;
left: 1em;
bottom: 4em;
font-size: 16pt;
z-index: 1001;
display: none;
box-shadow: 2px 2px 10px rgba(0,0,0,1);
line-height: 0;
min-width: 500px;
min-height: 1em;
}
#picture-copyright {
position: absolute;
left: 0;
bottom: 0;
font-family: sans-serif;
font-size: 12pt;
line-height: 1;
background: rgba(255, 255, 255, 0.5);
}
#picture-copyright a {
text-decoration: none;
color: #088;
}
#layers, #provider, #select {
position: absolute;
padding: .3em .5em .2em .5em;
font-family: monospace;
color: black;
background: lightgray;
box-shadow: 2px 2px 10px rgba(0,0,0,1);
z-index: 1001;
user-select: none;
}
#layers:hover, #provider:hover, #select:hover {
filter: brightness(125%);
}
#layers {
left: 1em;
bottom: 1em;
width: 2em;
height: 2em;
padding: .3em .5em .2em .5em;
font-size: 16pt;
text-align: center;
cursor: pointer;
}
#select {
left: 4em;
bottom: 1em;
width: 2em;
height: 2em;
padding: .3em .5em .2em .5em;
font-size: 16pt;
text-align: center;
cursor: pointer;
}
#select img {
padding-top: 13%;
width: 120%;
}
#provider {
right: 0.25em;
bottom: 1.25em;
height: 3em;
padding: 0.1em .3em 0.1em 0.3em;
font-size: 16pt;
}
#provider form {
font-size: 12pt;
color: #333;
}
#provider * {
margin: 0;
padding: 0;
}
</style>
</head>
<body>
<textarea spellcheck="false" data-gramm="false" id="query"></textarea>
<div id="examples">Examples:
<span class="selected">Altitude & Velocity</span>
<span>Boeing vs. Airbus</span>
<span>Helicopters</span>
<span>Hi-Performance</span>
<span>Light</span>
<span>Gliders</span>
<span>Ultralight</span>
<span>Military</span>
<span>Vertical Speed</span>
<span>Roll Angle</span>
<span>Steep</span>
<span>Year</span>
<span>A380</span>
<span>IL-76</span>
<span>F-16</span>
<span>KLM</span>
<span>N2163J</span>
<span>Event Time</span>
<span>Weekends</span>
<span>Emergency</span>
<span>Balloons</span>
<span>Ground Vehicles</span>
<span>Elon Musk</span>
<span>All Airlines</span>
</div>
<div id="stats"></div>
<div id="map"><div id="selection"></div></div>
<div id="report">
<div id="report_total"></div>
<div id="report_time"></div>
<div id="report_types"></div>
<div id="report_flights"></div>
<div id="report_owners"></div>
<div id="report_regs"></div>
</div>
<div id="picture"><img/><span id="picture-copyright">Picture from Wikipedia, © the details at the corresponding page.</span></div>
<div id="error"></div>
<div id="layers">👁</div>
<div id="select"><img src="pointer.svg"/></div>
<div id="provider">
<form>
<label>
<input type="radio" name="provider" value="any" checked>
Any
</label>
<br/>
<label>
<input type="radio" name="provider" value="cloud">
Cloud (Real-Time)
</label>
<br/>
<label>
<input type="radio" name="provider" value="self-hosted-intel">
Self-hosted (Snapshot)
</label>
</form>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.9.4/leaflet.min.js"></script>
<script src="examples.js"></script>
<script>
let uuid = crypto.randomUUID();
let base_layer = L.tileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', {
zoomOffset: 0,
minZoom: 2,
maxZoom: 19,
attribution: '© OpenStreetMap',
opacity: 0.1,
});
let map = L.map('map', {
center: [52.3676, 4.9041],
zoom: 5,
worldCopyJump: true,
layers: [base_layer]
});
map.attributionControl.setPrefix('<a href="https://github.com/ClickHouse/adsb.exposed/">About</a>');
let query_elem = document.getElementById('query');
let map_elem = document.getElementById('map');
let selected_box = [];
let cached_tiles = {};
/// Protect from race conditions.
let report_sequence_num = 0;
/// Query editor
function expandQueryEditor() {
query_elem.style.height = query_elem.scrollHeight + 'px';
}
function collapseQueryEditor() {
query_elem.style.height = '4.5em';
query_elem.blur();
}
function updateMap() {
let selected_example = document.querySelector('#examples .selected');
if (selected_example && query_elem.value != queries[selected_example.textContent]) {
selected_example.classList.remove('selected');
}
main_layer_sample100.redraw();
if (selected_box.length == 2) showReport();
}
function setQuery(value) {
query_elem.value = value;
collapseQueryEditor();
updateMap();
}
for (elem of document.querySelectorAll('#examples span')) {
elem.addEventListener('click', e => {
for (other of document.querySelectorAll('#examples span')) {
other.classList.remove('selected');
}
e.target.classList.add('selected');
setQuery(queries[e.target.textContent]);
});
}
query_elem.addEventListener('input', expandQueryEditor);
query_elem.addEventListener('focus', expandQueryEditor);
query_elem.addEventListener('blur', updateMap);
map_elem.addEventListener('focus', collapseQueryEditor);
query_elem.addEventListener('keydown', e => {
/// Firefox has code 13 for Enter and Chromium has code 10.
if ((event.metaKey || event.ctrlKey) && (event.keyCode == 13 || event.keyCode == 10)) {
collapseQueryEditor();
updateMap();
}
});
function getHosts(stick) {
const provider = document.querySelector('input[name="provider"]:checked').value;
if (provider == 'self-hosted-intel') {
return ['https://fly-selfhosted-backend-3.clickhouse.com'];
} else {
let prefix = '';
if (stick) {
const hash = sipHash128(JSON.stringify(stick)).substr(0, 3);
prefix = `${hash}.sticky.`;
}
const cloud_host = `https://${prefix}kvzqttvc2n.eu-west-1.aws.clickhouse-staging.com`;
if (provider == 'cloud') {
return [cloud_host];
} else {
return [cloud_host, 'https://fly-selfhosted-backend-3.clickhouse.com'];
}
}
}
class CustomError extends Error {
constructor(message, payload) {
super(message);
this.name = this.constructor.name;
this.payload = payload;
}
}
/// Returns the first successful (HTTP 2xx) response or an error if all of them failed.
/// Cancels other requests on first success.
function fetchAny(urls, params) {
const abort_controllers = {};
urls.forEach(url => abort_controllers[url] = new AbortController);
const requests = urls.map(url => {
const abort_controller = abort_controllers[url];
params.signal = abort_controller.signal;
return fetch(url, params).then(response => {
if (response.ok) {
urls.filter(other => other != url).map(other => abort_controllers[other].abort());
return response;
}
throw new CustomError(response.statusText, response);
}).catch(error => {
return Promise.reject(error);
})
});
return Promise.any(requests);
}
document.querySelector('form').addEventListener('change', e => {
cached_tiles = {};
updateMap();
});
/// Rendering
let progress_update_period = null;
let query_sequence_num = 0;
async function render(table, priority, coords, tile) {
const sql = query_elem.value;
const key = `${sql}-${coords.z}-${coords.x}-${coords.y}`;
if (!cached_tiles[key]) cached_tiles[key] = [];
buf = cached_tiles[key][priority];
if (!buf) {
++query_sequence_num;
const query_id = `${uuid}-${query_sequence_num}-${table}-${coords.z - 2}-${coords.x}-${coords.y}`;
const hosts = getHosts(key);
const url = host => `${host}/?user=website&default_format=RowBinary` +
`&query_id=${query_id}&replace_running_query=1` +
`¶m_table=${table}¶m_sampling=${[0, 100, 10, 1][priority]}` +
`¶m_z=${coords.z - 2}¶m_x=${coords.x}¶m_y=${coords.y}`;
progress_update_period = 1;
try {
const response = await fetchAny(hosts.map(host => url(host)), { method: 'POST', body: sql });
buf = await response.arrayBuffer();
cached_tiles[key][priority] = buf;
} catch (error) {
const response = error.errors[0].payload;
const text = await response.text();
if (!text.includes('QUERY_WAS_CANCELLED') &&
!text.includes('QUERY_WITH_SAME_ID_IS_ALREADY_RUNNING')) {
let err = document.getElementById('error');
err.textContent = text;
err.style.display = 'block';
}
return;
}
}
let ctx = tile.getContext('2d');
let image = ctx.createImageData(1024, 1024, {colorSpace: 'display-p3'});
let arr = new Uint8ClampedArray(buf);
for (let i = 0; i < 1024 * 1024 * 4; ++i) { image.data[i] = arr[i]; }
ctx.putImageData(image, 0, 0, 0, 0, 1024, 1024);
let err = document.getElementById('error');
err.style.display = 'none';
}
L.GridLayer.ClickHouse = L.GridLayer.extend({
createTile: function(coords, done) {
let tile = L.DomUtil.create('canvas', 'leaflet-tile');
tile.width = 1024;
tile.height = 1024;
render(this.options.table, this.options.priority, coords, tile).then(err => done(err, tile));
return tile;
}
});
const layer_options = {
tileSize: 1024,
minZoom: 2,
maxZoom: 19,
minNativeZoom: 2,
maxNativeZoom: 16,
attribution: '© Alexey Milovidov, ClickHouse, Inc. (data: © adsb.lol (ODbL v1.0), © airplanes.live, © adsbexchange.com)'
};
let layer_options_full = layer_options;
layer_options_full.table = 'planes_mercator';
layer_options_full.priority = 3;
let main_layer_full = new L.GridLayer.ClickHouse(layer_options_full);
let layer_options_sample10 = layer_options;
layer_options_sample10.table = 'planes_mercator_sample10';
layer_options_full.priority = 2;
let main_layer_sample10 = new L.GridLayer.ClickHouse(layer_options_sample10);
let layer_options_sample100 = layer_options;
layer_options_sample100.table = 'planes_mercator_sample100';
layer_options_full.priority = 1;
let main_layer_sample100 = new L.GridLayer.ClickHouse(layer_options_sample100);
setQuery(queries[document.querySelector('#examples .selected').textContent]);
/// Restore from a saved link
function latlngToMercator(latlng) {
return {
x: Math.round(0xFFFFFFFF * ((latlng.lng + 180) / 360)),
y: Math.round(0xFFFFFFFF * (1/2 - Math.log(Math.tan((latlng.lat + 90) / 360 * Math.PI)) / 2 / Math.PI)),
lat: latlng.lat,
lng: latlng.lng
};
}
let initial_load = true;
if (window.location.search) {
const params = new URLSearchParams(window.location.search);
const hash = params.get('query');
if (hash) {
loadQuery(hash).then(query => {
query_elem.value = query;
map.setView({lat: params.get('lat'), lng: params.get('lng')}, params.get('zoom'));
});
} else {
map.setView({lat: params.get('lat'), lng: params.get('lng')}, params.get('zoom'));
}
const box = params.get('box');
if (box) {
const arr = box.split(',');
selected_box = [latlngToMercator({lat: +arr[0], lng: +arr[1]}), latlngToMercator({lat: +arr[2], lng: +arr[3]})];
showReport();
}
} else {
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(position => {
map.setView([position.coords.latitude, position.coords.longitude]);
});
}
}
main_layer_sample100.addTo(map);
/// Sequential loading for different levels of details
main_layer_sample100.on('load', e => {
main_layer_sample10.addTo(map);
document.documentElement.style.setProperty('--progress-background-color', 'var(--progress-background-color2)');
document.documentElement.style.setProperty('--progress-foreground-color', 'var(--progress-foreground-color2)');
updateHistory();
});
main_layer_sample10.on('load', e => {
main_layer_full.addTo(map);
document.documentElement.style.setProperty('--progress-background-color', 'var(--progress-background-color3)');
document.documentElement.style.setProperty('--progress-foreground-color', 'var(--progress-foreground-color3)');
});
main_layer_full.on('load', e => {
document.documentElement.style.setProperty('--progress', '0');
document.documentElement.style.setProperty('--progress-background-color', 'var(--progress-background-color4)');
document.documentElement.style.setProperty('--progress-foreground-color', 'var(--progress-foreground-color4)');
});
main_layer_sample100.on('loading', e => {
main_layer_full.removeFrom(map);
main_layer_sample10.removeFrom(map);
document.documentElement.style.setProperty('--progress-background-color', 'var(--progress-background-color1)');
document.documentElement.style.setProperty('--progress-foreground-color', 'var(--progress-foreground-color1)');
});
/// Rectangle selection and reports
let select_toggle = document.getElementById('select');
let select_toggle_active = false;
select_toggle.addEventListener('click', e => {
select_toggle_active = !select_toggle_active;
select_toggle.style.backgroundColor = select_toggle_active ? 'orange' : '';
if (select_toggle_active) {
map.dragging.disable();
map_elem.style.cursor = 'crosshair';
} else {
map.dragging.enable();
map_elem.style.cursor = '';
hideSelection();
hideReport();
}
});
let selecting = false;
let selection_origin_point = {x: 0, y: 0};
let selection = document.getElementById('selection');
function clearContainer(elem) {
while (elem.firstChild) elem.removeChild(elem.firstChild);
}
function showReport() {
++report_sequence_num;
const current_report_sequence_num = report_sequence_num;
for (node of document.getElementById('report').childNodes) { node.textContent = '' };
document.getElementById('report').style.display = 'block';
document.documentElement.style.setProperty('--report-width', 'fit-content(20%)');
const current_query = query_elem.value;
/// This is fairly dirty.
const condition = /WHERE(.+)GROUP BY/is.exec(current_query)[1];
const sql_total = `
WITH mercator_x >= {left:UInt32} AND mercator_x < {right:UInt32}
AND mercator_y >= {top:UInt32} AND mercator_y < {bottom:UInt32} AS in_tile
SELECT
count() AS traces,
uniq(r) AS aircrafts,
uniq(t) AS types,
uniqIf(aircraft_flight,
aircraft_flight != '') AS flights,
min(time) AS first, max(time) AS last
FROM {table:Identifier}
WHERE ${condition}`;
const sql_flights = `
WITH mercator_x >= {left:UInt32} AND mercator_x < {right:UInt32}
AND mercator_y >= {top:UInt32} AND mercator_y < {bottom:UInt32} AS in_tile
SELECT aircraft_flight, count() AS c
FROM {table:Identifier}
WHERE aircraft_flight != '' AND NOT startsWith(aircraft_flight, '@@@') AND ${condition}
GROUP BY aircraft_flight
ORDER BY c DESC
LIMIT 100`;
const sql_types = `
WITH mercator_x >= {left:UInt32} AND mercator_x < {right:UInt32}
AND mercator_y >= {top:UInt32} AND mercator_y < {bottom:UInt32} AS in_tile
SELECT t, anyIf(desc, desc != '') AS desc, count() AS c
FROM {table:Identifier}
WHERE t != '' AND ${condition}
GROUP BY t
ORDER BY c DESC
LIMIT 100`;
const sql_registration = `
WITH mercator_x >= {left:UInt32} AND mercator_x < {right:UInt32}
AND mercator_y >= {top:UInt32} AND mercator_y < {bottom:UInt32} AS in_tile
SELECT r, count() AS c
FROM {table:Identifier}
WHERE r != '' AND ${condition}
GROUP BY r
ORDER BY c DESC
LIMIT 100`;
const sql_owner = `
WITH mercator_x >= {left:UInt32} AND mercator_x < {right:UInt32}
AND mercator_y >= {top:UInt32} AND mercator_y < {bottom:UInt32} AS in_tile
SELECT ownOp, count() AS c
FROM {table:Identifier}
WHERE ownOp != '' AND ${condition}
GROUP BY ownOp
ORDER BY c DESC
LIMIT 100`;
async function calculateReport(sql, field) {
const query_id = `${uuid}-${field}-${current_report_sequence_num}`;
const hosts = getHosts([field, selected_box, sql]);
const url = host => `${host}/?user=website&default_format=JSON&query_id=${query_id}` +
`¶m_table=planes_mercator` +
`¶m_left=${Math.min(selected_box[0].x, selected_box[1].x)}` +
`¶m_right=${Math.max(selected_box[0].x, selected_box[1].x)}` +
`¶m_top=${Math.min(selected_box[0].y, selected_box[1].y)}` +
`¶m_bottom=${Math.max(selected_box[0].y, selected_box[1].y)}`;
progress_update_period = 1;
const response = await fetchAny(hosts.map(host => url(host)), { method: 'POST', body: sql });
if (!response.ok) {
const text = await response.text();
if (!text.includes('QUERY_WAS_CANCELLED') && !text.includes('QUERY_WITH_SAME_ID_IS_ALREADY_RUNNING')) {
let err = document.getElementById('error');
err.textContent = text;
err.style.display = 'block';
}
return;
}
const json = await response.json();
return json;
}
async function findPicture(name) {
const wiki_api_url = 'https://en.wikipedia.org/w/api.php';
const search_url = wiki_api_url + '?' + new URLSearchParams({
action: 'query',
list: 'search',
srsearch: name,
format: 'json',
origin: '*'
});
const response = await fetch(search_url);
const search_data = await response.json();
if (search_data.query && search_data.query.search && search_data.query.search.length > 0) {
const title = search_data.query.search[0].title;
const page_url = wiki_api_url + '?' + new URLSearchParams({
action: 'query',
titles: title,
prop: 'pageimages',
format: 'json',
origin: '*'
});
const response = await fetch(page_url);
const pages_data = await response.json();
const pages = pages_data.query.pages;
const page_id = Object.keys(pages)[0];
if (pages[page_id].thumbnail) {
const image_info_url = wiki_api_url + '?' + new URLSearchParams({
action: 'query',
titles: 'File:' + pages[page_id].pageimage,
prop: 'imageinfo',
iiprop: 'extmetadata',
format: 'json',
origin: '*'
});
const image_info_response = await fetch(image_info_url);
const image_info_data = await image_info_response.json();
const metadata = image_info_data.query.pages["-1"].imageinfo[0].extmetadata;
const attribution = `${metadata.LicenseShortName.value}, ${metadata.Artist.value}`;
return {src: pages[page_id].thumbnail.source.replace('50px', '500px'), attr: attribution};
}
}
}
let cached_pictures = {};
async function findPictureCached(name) {
if (cached_pictures[name]) return cached_pictures[name];
const result = await findPicture(name);
cached_pictures[name] = result;
return result;
}
function createList(sql, field, elem_id, title, separator, link_content_func) {
calculateReport(sql, field).then(json => {
if (current_report_sequence_num != report_sequence_num) return;
let elem = document.getElementById(elem_id);
clearContainer(elem);
elem.appendChild(document.createTextNode(title));
for (const [idx, row] of json.data.entries()) {
if (idx) {
let comma = document.createTextNode(separator);
elem.appendChild(comma);
}
let link = document.createElement('a');
link.textContent = link_content_func(row);
link.addEventListener('click', e => {
let condition = `${field} = '${row[field]}'`; /// SQL injection, but ok.
let changed_query = current_query.replace(
/(WHERE.+?)(\/\* Filter: \*\/ AND .+)?(GROUP BY)/is,
'$1' + '/* Filter: */ AND ' + condition + '\n$3');
setQuery(changed_query);
});
/// Pictures from Wikipedia
if (field == 't') {
link.addEventListener('mouseover', e => {
findPictureCached(row.desc).then(data => {
if (data) {
let picture = document.getElementById('picture');
picture.style.display = 'block';
picture.firstChild.src = data.src;
let copyright = document.getElementById('picture-copyright');
copyright.innerHTML = data.attr;
/// Sometimes there are tables, paragraphs, etc. Strip them.
copyright.innerHTML = copyright.innerText;
}
});
});
link.addEventListener('mouseout', e => {
let picture = document.getElementById('picture');
picture.style.display = 'none';
picture.firstChild.src = '';
});
}
elem.appendChild(link);
}
if (json.data.length >= 100) elem.appendChild(document.createTextNode('…'));
});
}
calculateReport(sql_total).then(json => {
const row = json.data[0];
let text = `Total ${Number(row.traces).toLocaleString()} traces, ${Number(row.aircrafts).toLocaleString()} aircrafts of ${Number(row.types).toLocaleString()} types, ${Number(row.aircrafts).toLocaleString()} flight nums.`;
if (json.statistics.rows_read > 1) {
text += ` Processed ${Number(json.statistics.rows_read).toLocaleString()} rows.`;
}
document.getElementById('report_total').textContent = text;
if (row.traces > 0) {
document.getElementById('report_time').textContent = `Time: ${row.first} — ${row.last}`;
}
});
createList(sql_flights, 'aircraft_flight', 'report_flights', 'Flights: ', ', ', (row => row.aircraft_flight));
createList(sql_types, 't', 'report_types', 'Types:\n', ',\n', (row => `${row.t} (${row.desc})`));
createList(sql_registration, 'r', 'report_regs', 'Registration: ', ', ', (row => row.r));
createList(sql_owner, 'ownOp', 'report_owners', 'Owner:\n', ',\n', (row => row.ownOp));
}
function hideReport() {
selected_box = [];
document.getElementById('report').style.display = 'none';
document.documentElement.style.setProperty('--report-width', '0%');
let picture = document.getElementById('picture');
picture.style.display = 'none';
picture.firstChild.src = '';
}
function hideSelection() {
selection.style.display = 'none';
hideReport();
}
map.on('contextmenu', e => {
return false;
});
function selectStart(e) {
if (e.button !== 2 && !select_toggle_active) return;
const rect = map_elem.getBoundingClientRect();
const x = e.clientX - rect.x;
const y = e.clientY - rect.y;
selection_origin_point.x = Math.round(x);
selection_origin_point.y = Math.round(y);
selected_box[0] = latlngToMercator(map.containerPointToLatLng([x, y]));
selection.style.display = 'block';
selection.style.left = selection_origin_point.x + 'px';
selection.style.top = selection_origin_point.y + 'px';
selection.style.width = 0;
selection.style.height = 0;
selecting = true;
e.preventDefault();
}
map_elem.addEventListener('pointerdown', selectStart);
/// https://www.redblobgames.com/making-of/draggable/
map_elem.addEventListener('touchstart', e => e.preventDefault());
function selectMove(e) {
if (!selecting) return;
const rect = map_elem.getBoundingClientRect();
const x = e.clientX - rect.x;
const y = e.clientY - rect.y;
if (x >= selection_origin_point.x) {
selection.style.width = Math.round(x - selection_origin_point.x) + 'px';
} else {
selection.style.left = Math.round(x) + 'px';
selection.style.width = Math.round(selection_origin_point.x - x) + 'px';
}
if (y >= selection_origin_point.y) {
selection.style.height = Math.round(y - selection_origin_point.y) + 'px';
} else {
selection.style.top = Math.round(y) + 'px';
selection.style.height = Math.round(selection_origin_point.y - y) + 'px';
}
e.preventDefault();
};
map_elem.addEventListener('pointermove', selectMove);
function selectStop(e) {
if ((e.button !== 2 && !select_toggle_active) || !selecting) return;
selecting = false;
const rect = map_elem.getBoundingClientRect();
const x = e.clientX - rect.x;
const y = e.clientY - rect.y;
if (selection_origin_point.x == Math.round(x) &&
selection_origin_point.y == Math.round(y)) {
hideSelection();
} else {
selected_box[1] = latlngToMercator(map.containerPointToLatLng([x, y]));
showReport();
updateHistory();
}
e.preventDefault();
};
map_elem.addEventListener('pointerup', selectStop);
map_elem.addEventListener('pointercancel', selectStop);
/// Progress bar
const progress_min_interval = 100;
let progress_update_counter = 0;
let previous_progress_update = 0;
async function getStats() {
++progress_update_counter;
if (!progress_update_period || (progress_update_counter - previous_progress_update) < progress_update_period) {
setTimeout(getStats, progress_min_interval);
return;
}
const sql = `SELECT
sum(read_rows) AS r,
sum(total_rows_approx) AS t,
sum(read_bytes) AS b,
r / max(elapsed) AS rps,
b / max(elapsed) AS bps,
formatReadableQuantity(r) AS formatted_rows,
formatReadableSize(b) AS formatted_bytes,
formatReadableQuantity(rps) AS formatted_rps,
formatReadableSize(bps) AS formatted_bps
FROM clusterAllReplicas(default, system.processes)
WHERE user = 'website' AND startsWith(query_id, {uuid:String})`;
const hosts = getHosts(uuid);
const url = host => `${host}/?user=website_progress&default_format=JSON¶m_uuid=${uuid}`;
let responses = await Promise.all(hosts.map(host => fetch(url(host), { method: 'POST', body: sql })));
let datas = await Promise.all(responses.map(response => response.json()));
/// Which of the hosts are processing our queries?
const stat = datas.map(d => d.data[0]).filter(d => d.t && d.t > 0).sort((a, b) => b.bps - a.bps)[0];