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var switches = [];
var linknets = [];
var last_dataset = [];
get_switches();
get_ping();
function json_request(url, func, repeat_ms) {
var request = new XMLHttpRequest();
request.open('GET', url, true);
request.onload = function() {
if (this.status >= 200 && this.status < 400) {
func(JSON.parse(this.response));
} else if (this.status != 410) {
json_request(url, func, repeat_ms);
}
};
request.onerror = function() {
json_request(url, func, repeat_ms);
};
request.send();
}
function get_switches() {
json_request(switches_url, draw_switches, 1000);
}
function get_ping() {
json_request(ping_url, update_ping, 1000);
}
function draw_switches(json) {
for (var switchnum in switches) {
document.body.removeChild(switches[switchnum]);
}
switches = [];
var lines = document.getElementById("lines");
for (var linknetnum in linknets) {
lines.removeChild(linknets[linknetnum][0]);
lines.removeChild(linknets[linknetnum][1]);
lines.removeChild(linknets[linknetnum][2]);
}
linknets = [];
for (var switchnum in json['switches']) {
var s = json['switches'][switchnum];
create_switch(switchnum,
s['sysname'],
parseInt(s['x']),
parseInt(s['y']),
parseInt(s['zorder']),
parseInt(s['width']),
parseInt(s['height']));
}
if (draw_linknets) {
for (var i = 0; i < json['linknets'].length; ++i) {
var linknet = json['linknets'][i];
create_linknet(linknet['linknet'], linknet['switch1'], linknet['switch2']);
}
}
setTimeout(get_switches, 60000);
really_update_ping(last_dataset);
}
function create_linknet(linknetnum, switch1, switch2) {
var s1 = switches[switch1];
var s2 = switches[switch2];
var s1x = parseInt(s1.style.left.replace("px", "")) + 0.5 * parseInt(s1.style.width.replace("px", ""));
var s1y = parseInt(s1.style.top.replace("px", "")) + 0.5 * parseInt(s1.style.height.replace("px", ""));
var s2x = parseInt(s2.style.left.replace("px", "")) + 0.5 * parseInt(s2.style.width.replace("px", ""));
var s2y = parseInt(s2.style.top.replace("px", "")) + 0.5 * parseInt(s2.style.height.replace("px", ""));
var midx = 0.5 * (s1x + s2x);
var midy = 0.5 * (s1y + s2y);
var outline = document.createElementNS("http://www.w3.org/2000/svg", "line");
outline.setAttribute("x1", s1x);
outline.setAttribute("y1", s1y);
outline.setAttribute("x2", s2x);
outline.setAttribute("y2", s2y);
outline.style.stroke = "rgb(0, 0, 0)";
outline.style.strokeWidth = 4;
document.getElementById("lines").appendChild(outline);
var line1 = document.createElementNS("http://www.w3.org/2000/svg", "line");
line1.setAttribute("x1", s1x);
line1.setAttribute("y1", s1y);
line1.setAttribute("x2", midx);
line1.setAttribute("y2", midy);
line1.style.stroke = "rgb(0, 0, 255)";
line1.style.strokeWidth = 3;
document.getElementById("lines").appendChild(line1);
var line2 = document.createElementNS("http://www.w3.org/2000/svg", "line");
line2.setAttribute("x1", midx);
line2.setAttribute("y1", midy);
line2.setAttribute("x2", s2x);
line2.setAttribute("y2", s2y);
line2.style.stroke = "rgb(0, 0, 255)";
line2.style.strokeWidth = 3;
document.getElementById("lines").appendChild(line2);
linknets[linknetnum] = [ line1, line2, outline ];
}
function update_ping(json) {
last_dataset = json;
really_update_ping(json);
setTimeout(get_ping, 1000);
}
function gradient_from_latency(latency_ms, latency_secondary_ms) {
if (latency_secondary_ms === undefined) {
return rgb_from_latency(latency_ms);
}
return 'linear-gradient(' +
rgb_from_latency(latency_ms) + ', ' +
rgb_from_latency(latency_secondary_ms) + ')';
}
function rgb_from_latency(latency_ms) {
if (latency_ms === null || latency_ms === undefined) {
return '#0000ff';
}
// 10ms is max
var l = latency_ms / 50.0;
if (l >= 2.0) {
return 'rgb(255, 0, 0)';
} else if (l >= 1.0) {
l = 2.0 - l;
l = Math.pow(l, 1.0/2.2);
l = Math.round(l * 255.0);
return 'rgb(255, ' + l + ', 0)';
} else {
l = Math.pow(l, 1.0/2.2);
l = Math.round(l * 255.0);
return 'rgb(' + l + ', 255, 0)';
}
}
function really_update_ping(json) {
if (json['switches']) {
for (var switchnum in switches) {
if (json['switches'][switchnum]) {
if (json['switches'][switchnum]['color']) {
switches[switchnum].style.background = json['switches'][switchnum]['color'];
} else {
switches[switchnum].style.background =
gradient_from_latency(json['switches'][switchnum]['latency'],
json['switches'][switchnum]['latency_secondary']);
}
} else {
switches[switchnum].style.background = '#0000ff';
}
}
}
if (json['linknets']) {
for (var linknetnum in linknets) {
linknets[linknetnum][0].style.stroke = rgb_from_latency(json['linknets'][linknetnum][0]);
linknets[linknetnum][1].style.stroke = rgb_from_latency(json['linknets'][linknetnum][1]);
}
}
}
function create_switch(switchnum, sysname, x, y, zorder, width, height) {
var s = document.createElement("div");
var map = document.getElementById('map');
var top_offset = map.getBoundingClientRect().top;
var left_offset = map.getBoundingClientRect().left;
s.style.position = 'absolute';
s.style.left = (left_offset + x) + 'px';
s.style.top = (top_offset + y) + 'px';
s.style.width = width + 'px';
s.style.height = height + 'px';
s.style.backgroundColor = '#0000ff';
s.style.border = '1px solid black';
s.style.padding = "0";
s.style.zIndex = zorder + 100;
switches[switchnum] = s;
var span = document.createElement("div");
span.className = "switchname";
if (width < 1.5 * height) {
span.className = "switchname rot";
}
span.style.border = "0";
span.style.padding = "0";
s.appendChild(span);
var text = document.createTextNode(sysname);
span.appendChild(text);
s.setAttribute("data-switchnum", switchnum);
document.body.appendChild(s);
}
var dragging_switch = null;
var delta_x = null, delta_y = null;
if (can_edit) {
document.onmousedown = function(e) {
var switchnum = e.target.getAttribute("data-switchnum");
if (switchnum === null) {
return;
}
dragging_switch = switchnum;
delta_x = parseInt(e.target.style.left.replace("px", "")) - e.clientX;
delta_y = parseInt(e.target.style.top.replace("px", "")) - e.clientY;
}
document.onmousemove = function(e) {
if (dragging_switch === null) {
return;
}
switches[dragging_switch].style.left = (e.clientX + delta_x) + 'px';
switches[dragging_switch].style.top = (e.clientY + delta_y) + 'px';
}
document.onmouseup = function(e) {
if (dragging_switch === null) {
return;
}
var x = e.clientX + delta_x - map.getBoundingClientRect().top;
var y = e.clientY + delta_y - map.getBoundingClientRect().left;
var request = new XMLHttpRequest();
request.open('POST', '/change-switch-pos.pl', true);
request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=UTF-8');
request.send("switch=" + dragging_switch + "&x=" + x + "&y=" + y);
dragging_switch = null;
}
}
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