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-rw-r--r--web/gui/src/dashboard.js/chart-registry.js94
1 files changed, 94 insertions, 0 deletions
diff --git a/web/gui/src/dashboard.js/chart-registry.js b/web/gui/src/dashboard.js/chart-registry.js
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+++ b/web/gui/src/dashboard.js/chart-registry.js
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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);
+ }
+ });
+ }
+ }
+};