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// *** src/dashboard.js/chart-registry.js
// Chart Registry
// When multiple charts need the same chart, we avoid downloading it
// multiple times (and having it in browser memory multiple time)
// by using this registry.
// Every time we download a chart definition, we save it here with .add()
// Then we try to get it back with .get(). If that fails, we download it.
NETDATA.fixHost = function (host) {
while (host.slice(-1) === '/') {
host = host.substring(0, host.length - 1);
}
return host;
};
NETDATA.chartRegistry = {
charts: {},
globalReset: function () {
this.charts = {};
},
add: function (host, id, data) {
if (typeof this.charts[host] === 'undefined') {
this.charts[host] = {};
}
//console.log('added ' + host + '/' + id);
this.charts[host][id] = data;
},
get: function (host, id) {
if (typeof this.charts[host] === 'undefined') {
return null;
}
if (typeof this.charts[host][id] === 'undefined') {
return null;
}
//console.log('cached ' + host + '/' + id);
return this.charts[host][id];
},
downloadAll: function (host, callback) {
host = NETDATA.fixHost(host);
let self = this;
function got_data(h, data, callback) {
if (data !== null) {
self.charts[h] = data.charts;
// update the server timezone in our options
if (typeof data.timezone === 'string') {
NETDATA.options.server_timezone = data.timezone;
}
} else {
NETDATA.error(406, h + '/api/v1/charts');
}
if (typeof callback === 'function') {
callback(data);
}
}
if (netdataSnapshotData !== null) {
got_data(host, netdataSnapshotData.charts, callback);
} else {
$.ajax({
url: host + '/api/v1/charts',
async: true,
cache: false,
xhrFields: {withCredentials: true} // required for the cookie
})
.done(function (data) {
data = NETDATA.xss.checkOptional('/api/v1/charts', data);
got_data(host, data, callback);
})
.fail(function () {
NETDATA.error(405, host + '/api/v1/charts');
if (typeof callback === 'function') {
callback(null);
}
});
}
}
};
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