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netdata/web/gui/src/dashboard.js/main.js

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// *** src/dashboard.js/main.js
// Codacy declarations
/* global clipboard */
/* global Ps */
if (NETDATA.options.debug.main_loop) {
console.log('welcome to NETDATA');
}
NETDATA.onresizeCallback = null;
NETDATA.onresize = function () {
NETDATA.options.last_page_resize = Date.now();
NETDATA.onscroll();
if (typeof NETDATA.onresizeCallback === 'function') {
NETDATA.onresizeCallback();
}
};
NETDATA.abortAllRefreshes = function () {
let targets = NETDATA.options.targets;
let len = targets.length;
while (len--) {
if (targets[len].fetching_data) {
if (typeof targets[len].xhr !== 'undefined') {
targets[len].xhr.abort();
targets[len].running = false;
targets[len].fetching_data = false;
}
}
}
};
NETDATA.onscrollStartDelay = function () {
NETDATA.options.last_page_scroll = Date.now();
NETDATA.options.on_scroll_refresher_stop_until =
NETDATA.options.last_page_scroll
+ (NETDATA.options.current.async_on_scroll ? 1000 : 0);
};
NETDATA.onscrollEndDelay = function () {
NETDATA.options.on_scroll_refresher_stop_until =
Date.now()
+ (NETDATA.options.current.async_on_scroll ? NETDATA.options.current.onscroll_worker_duration_threshold : 0);
};
NETDATA.onscroll_updater_timeout_id = undefined;
NETDATA.onscrollUpdater = function () {
NETDATA.globalSelectionSync.stop();
if (NETDATA.options.abort_ajax_on_scroll) {
NETDATA.abortAllRefreshes();
}
// when the user scrolls he sees that we have
// hidden all the not-visible charts
// using this little function we try to switch
// the charts back to visible quickly
if (!NETDATA.intersectionObserver.enabled()) {
if (!NETDATA.options.current.parallel_refresher) {
let targets = NETDATA.options.targets;
let len = targets.length;
while (len--) {
if (!targets[len].running) {
targets[len].isVisible();
}
}
}
}
NETDATA.onscrollEndDelay();
};
NETDATA.scrollUp = false;
NETDATA.scrollY = window.scrollY;
NETDATA.onscroll = function () {
//console.log('onscroll() begin');
NETDATA.onscrollStartDelay();
NETDATA.chartRefresherReschedule();
NETDATA.scrollUp = (window.scrollY > NETDATA.scrollY);
NETDATA.scrollY = window.scrollY;
if (NETDATA.onscroll_updater_timeout_id) {
NETDATA.timeout.clear(NETDATA.onscroll_updater_timeout_id);
}
NETDATA.onscroll_updater_timeout_id = NETDATA.timeout.set(NETDATA.onscrollUpdater, 0);
//console.log('onscroll() end');
};
NETDATA.supportsPassiveEvents = function () {
if (NETDATA.options.passive_events === null) {
let supportsPassive = false;
try {
let opts = Object.defineProperty({}, 'passive', {
get: function () {
supportsPassive = true;
}
});
window.addEventListener("test", null, opts);
} catch (e) {
console.log('browser does not support passive events');
}
NETDATA.options.passive_events = supportsPassive;
}
// console.log('passive ' + NETDATA.options.passive_events);
return NETDATA.options.passive_events;
};
window.addEventListener('resize', NETDATA.onresize, NETDATA.supportsPassiveEvents() ? {passive: true} : false);
window.addEventListener('scroll', NETDATA.onscroll, NETDATA.supportsPassiveEvents() ? {passive: true} : false);
// window.onresize = NETDATA.onresize;
// window.onscroll = NETDATA.onscroll;
// ----------------------------------------------------------------------------------------------------------------
// Global Pan and Zoom on charts
// Using this structure are synchronize all the charts, so that
// when you pan or zoom one, all others are automatically refreshed
// to the same timespan.
NETDATA.globalPanAndZoom = {
seq: 0, // timestamp ms
// every time a chart is panned or zoomed
// we set the timestamp here
// then we use it as a sequence number
// to find if other charts are synchronized
// to this time-range
master: null, // the master chart (state), to which all others
// are synchronized
force_before_ms: null, // the timespan to sync all other charts
force_after_ms: null,
callback: null,
globalReset: function () {
this.clearMaster();
this.seq = 0;
this.master = null;
this.force_after_ms = null;
this.force_before_ms = null;
this.callback = null;
},
delay: function () {
if (NETDATA.options.debug.globalPanAndZoom) {
console.log('globalPanAndZoom.delay()');
}
NETDATA.options.auto_refresher_stop_until = Date.now() + NETDATA.options.current.global_pan_sync_time;
},
// set a new master
setMaster: function (state, after, before) {
this.delay();
if (!NETDATA.options.current.sync_pan_and_zoom) {
return;
}
if (this.master === null) {
if (NETDATA.options.debug.globalPanAndZoom) {
console.log('globalPanAndZoom.setMaster(' + state.id + ', ' + after + ', ' + before + ') SET MASTER');
}
} else if (this.master !== state) {
if (NETDATA.options.debug.globalPanAndZoom) {
console.log('globalPanAndZoom.setMaster(' + state.id + ', ' + after + ', ' + before + ') CHANGED MASTER');
}
this.master.resetChart(true, true);
}
let now = Date.now();
this.master = state;
this.seq = now;
this.force_after_ms = after;
this.force_before_ms = before;
if (typeof this.callback === 'function') {
this.callback(true, after, before);
}
},
// clear the master
clearMaster: function () {
// if (NETDATA.options.debug.globalPanAndZoom === true)
// console.log('globalPanAndZoom.clearMaster()');
if (NETDATA.options.debug.globalPanAndZoom) {
console.log('globalPanAndZoom.clearMaster()');
}
if (this.master !== null) {
let st = this.master;
this.master = null;
st.resetChart();
}
this.master = null;
this.seq = 0;
this.force_after_ms = null;
this.force_before_ms = null;
NETDATA.options.auto_refresher_stop_until = 0;
if (typeof this.callback === 'function') {
this.callback(false, 0, 0);
}
},
// is the given state the master of the global
// pan and zoom sync?
isMaster: function (state) {
return (this.master === state);
},
// are we currently have a global pan and zoom sync?
isActive: function () {
return (this.master !== null && this.force_before_ms !== null && this.force_after_ms !== null && this.seq !== 0);
},
// check if a chart, other than the master
// needs to be refreshed, due to the global pan and zoom
shouldBeAutoRefreshed: function (state) {
if (this.master === null || this.seq === 0) {
return false;
}
//if (state.needsRecreation())
// return true;
return (state.tm.pan_and_zoom_seq !== this.seq);
}
};
// ----------------------------------------------------------------------------------------------------------------
// global chart underlay (time-frame highlighting)
NETDATA.globalChartUnderlay = {
callback: null, // what to call when a highlighted range is setup
after: null, // highlight after this time
before: null, // highlight before this time
view_after: null, // the charts after_ms viewport when the highlight was setup
view_before: null, // the charts before_ms viewport, when the highlight was setup
state: null, // the chart the highlight was setup
isActive: function () {
return (this.after !== null && this.before !== null);
},
hasViewport: function () {
return (this.state !== null && this.view_after !== null && this.view_before !== null);
},
init: function (state, after, before, view_after, view_before) {
this.state = (typeof state !== 'undefined') ? state : null;
this.after = (typeof after !== 'undefined' && after !== null && after > 0) ? after : null;
this.before = (typeof before !== 'undefined' && before !== null && before > 0) ? before : null;
this.view_after = (typeof view_after !== 'undefined' && view_after !== null && view_after > 0) ? view_after : null;
this.view_before = (typeof view_before !== 'undefined' && view_before !== null && view_before > 0) ? view_before : null;
},
setup: function () {
if (this.isActive()) {
if (this.state === null) {
this.state = NETDATA.options.targets[0];
}
if (typeof this.callback === 'function') {
this.callback(true, this.after, this.before);
}
} else {
if (typeof this.callback === 'function') {
this.callback(false, 0, 0);
}
}
},
set: function (state, after, before, view_after, view_before) {
if (after > before) {
let t = after;
after = before;
before = t;
}
this.init(state, after, before, view_after, view_before);
// if (this.hasViewport() === true)
// NETDATA.globalPanAndZoom.setMaster(this.state, this.view_after, this.view_before);
if (this.hasViewport()) {
NETDATA.globalPanAndZoom.setMaster(this.state, this.view_after, this.view_before);
}
this.setup();
},
clear: function () {
this.after = null;
this.before = null;
this.state = null;
this.view_after = null;
this.view_before = null;
if (typeof this.callback === 'function') {
this.callback(false, 0, 0);
}
},
focus: function () {
if (this.isActive() && this.hasViewport()) {
if (this.state === null) {
this.state = NETDATA.options.targets[0];
}
if (NETDATA.globalPanAndZoom.isMaster(this.state)) {
NETDATA.globalPanAndZoom.clearMaster();
}
NETDATA.globalPanAndZoom.setMaster(this.state, this.view_after, this.view_before, true);
}
}
};
// ----------------------------------------------------------------------------------------------------------------
// dimensions selection
// TODO
// move color assignment to dimensions, here
let dimensionStatus = function (parent, label, name_div, value_div, color) {
this.enabled = false;
this.parent = parent;
this.label = label;
this.name_div = null;
this.value_div = null;
this.color = NETDATA.themes.current.foreground;
this.selected = (parent.unselected_count === 0);
this.setOptions(name_div, value_div, color);
};
dimensionStatus.prototype.invalidate = function () {
this.name_div = null;
this.value_div = null;
this.enabled = false;
};
dimensionStatus.prototype.setOptions = function (name_div, value_div, color) {
this.color = color;
if (this.name_div !== name_div) {
this.name_div = name_div;
this.name_div.title = this.label;
this.name_div.style.setProperty('color', this.color, 'important');
if (!this.selected) {
this.name_div.className = 'netdata-legend-name not-selected';
} else {
this.name_div.className = 'netdata-legend-name selected';
}
}
if (this.value_div !== value_div) {
this.value_div = value_div;
this.value_div.title = this.label;
this.value_div.style.setProperty('color', this.color, 'important');
if (!this.selected) {
this.value_div.className = 'netdata-legend-value not-selected';
} else {
this.value_div.className = 'netdata-legend-value selected';
}
}
this.enabled = true;
this.setHandler();
};
dimensionStatus.prototype.setHandler = function () {
if (!this.enabled) {
return;
}
let ds = this;
// this.name_div.onmousedown = this.value_div.onmousedown = function(e) {
this.name_div.onclick = this.value_div.onclick = function (e) {
e.preventDefault();
if (ds.isSelected()) {
// this is selected
if (e.shiftKey || e.ctrlKey) {
// control or shift key is pressed -> unselect this (except is none will remain selected, in which case select all)
ds.unselect();
if (ds.parent.countSelected() === 0) {
ds.parent.selectAll();
}
} else {
// no key is pressed -> select only this (except if it is the only selected already, in which case select all)
if (ds.parent.countSelected() === 1) {
ds.parent.selectAll();
} else {
ds.parent.selectNone();
ds.select();
}
}
}
else {
// this is not selected
if (e.shiftKey || e.ctrlKey) {
// control or shift key is pressed -> select this too
ds.select();
} else {
// no key is pressed -> select only this
ds.parent.selectNone();
ds.select();
}
}
ds.parent.state.redrawChart();
}
};
dimensionStatus.prototype.select = function () {
if (!this.enabled) {
return;
}
this.name_div.className = 'netdata-legend-name selected';
this.value_div.className = 'netdata-legend-value selected';
this.selected = true;
};
dimensionStatus.prototype.unselect = function () {
if (!this.enabled) {
return;
}
this.name_div.className = 'netdata-legend-name not-selected';
this.value_div.className = 'netdata-legend-value hidden';
this.selected = false;
};
dimensionStatus.prototype.isSelected = function () {
// return(this.enabled === true && this.selected === true);
return this.enabled && this.selected;
};
// ----------------------------------------------------------------------------------------------------------------
let dimensionsVisibility = function (state) {
this.state = state;
this.len = 0;
this.dimensions = {};
this.selected_count = 0;
this.unselected_count = 0;
};
dimensionsVisibility.prototype.dimensionAdd = function (label, name_div, value_div, color) {
if (typeof this.dimensions[label] === 'undefined') {
this.len++;
this.dimensions[label] = new dimensionStatus(this, label, name_div, value_div, color);
} else {
this.dimensions[label].setOptions(name_div, value_div, color);
}
return this.dimensions[label];
};
dimensionsVisibility.prototype.dimensionGet = function (label) {
return this.dimensions[label];
};
dimensionsVisibility.prototype.invalidateAll = function () {
let keys = Object.keys(this.dimensions);
let len = keys.length;
while (len--) {
this.dimensions[keys[len]].invalidate();
}
};
dimensionsVisibility.prototype.selectAll = function () {
let keys = Object.keys(this.dimensions);
let len = keys.length;
while (len--) {
this.dimensions[keys[len]].select();
}
};
dimensionsVisibility.prototype.countSelected = function () {
let selected = 0;
let keys = Object.keys(this.dimensions);
let len = keys.length;
while (len--) {
if (this.dimensions[keys[len]].isSelected()) {
selected++;
}
}
return selected;
};
dimensionsVisibility.prototype.selectNone = function () {
let keys = Object.keys(this.dimensions);
let len = keys.length;
while (len--) {
this.dimensions[keys[len]].unselect();
}
};
dimensionsVisibility.prototype.selected2BooleanArray = function (array) {
let ret = [];
this.selected_count = 0;
this.unselected_count = 0;
let len = array.length;
while (len--) {
let ds = this.dimensions[array[len]];
if (typeof ds === 'undefined') {
// console.log(array[i] + ' is not found');
ret.unshift(false);
} else if (ds.isSelected()) {
ret.unshift(true);
this.selected_count++;
} else {
ret.unshift(false);
this.unselected_count++;
}
}
if (this.selected_count === 0 && this.unselected_count !== 0) {
this.selectAll();
return this.selected2BooleanArray(array);
}
return ret;
};
// ----------------------------------------------------------------------------------------------------------------
// date/time conversion
NETDATA.dateTime = {
using_timezone: false,
// these are the old netdata functions
// we fallback to these, if the new ones fail
localeDateStringNative: function (d) {
return d.toLocaleDateString();
},
localeTimeStringNative: function (d) {
return d.toLocaleTimeString();
},
xAxisTimeStringNative: function (d) {
return NETDATA.zeropad(d.getHours()) + ":"
+ NETDATA.zeropad(d.getMinutes()) + ":"
+ NETDATA.zeropad(d.getSeconds());
},
// initialize the new date/time conversion
// functions.
// if this fails, we fallback to the above
init: function (timezone) {
//console.log('init with timezone: ' + timezone);
// detect browser timezone
try {
NETDATA.options.browser_timezone = Intl.DateTimeFormat().resolvedOptions().timeZone;
} catch (e) {
console.log('failed to detect browser timezone: ' + e.toString());
NETDATA.options.browser_timezone = 'cannot-detect-it';
}
let ret = false;
try {
let dateOptions = {
localeMatcher: 'best fit',
formatMatcher: 'best fit',
weekday: 'short',
year: 'numeric',
month: 'short',
day: '2-digit'
};
let timeOptions = {
localeMatcher: 'best fit',
hour12: false,
formatMatcher: 'best fit',
hour: '2-digit',
minute: '2-digit',
second: '2-digit'
};
let xAxisOptions = {
localeMatcher: 'best fit',
hour12: false,
formatMatcher: 'best fit',
hour: '2-digit',
minute: '2-digit',
second: '2-digit'
};
if (typeof timezone === 'string' && timezone !== '' && timezone !== 'default') {
dateOptions.timeZone = timezone;
timeOptions.timeZone = timezone;
timeOptions.timeZoneName = 'short';
xAxisOptions.timeZone = timezone;
this.using_timezone = true;
} else {
timezone = 'default';
this.using_timezone = false;
}
this.dateFormat = new Intl.DateTimeFormat(navigator.language, dateOptions);
this.timeFormat = new Intl.DateTimeFormat(navigator.language, timeOptions);
this.xAxisFormat = new Intl.DateTimeFormat(navigator.language, xAxisOptions);
this.localeDateString = function (d) {
return this.dateFormat.format(d);
};
this.localeTimeString = function (d) {
return this.timeFormat.format(d);
};
this.xAxisTimeString = function (d) {
return this.xAxisFormat.format(d);
};
//let d = new Date();
//let t = this.dateFormat.format(d) + ' ' + this.timeFormat.format(d) + ' ' + this.xAxisFormat.format(d);
ret = true;
} catch (e) {
console.log('Cannot setup Date/Time formatting: ' + e.toString());
timezone = 'default';
this.localeDateString = this.localeDateStringNative;
this.localeTimeString = this.localeTimeStringNative;
this.xAxisTimeString = this.xAxisTimeStringNative;
this.using_timezone = false;
ret = false;
}
// save it
//console.log('init setOption timezone: ' + timezone);
NETDATA.setOption('timezone', timezone);
return ret;
}
};
NETDATA.dateTime.init(NETDATA.options.current.timezone);
// ----------------------------------------------------------------------------------------------------------------
// global selection sync
NETDATA.globalSelectionSync = {
state: null,
dontSyncBefore: 0,
last_t: 0,
slaves: [],
timeoutId: undefined,
globalReset: function () {
this.stop();
this.state = null;
this.dontSyncBefore = 0;
this.last_t = 0;
this.slaves = [];
this.timeoutId = undefined;
},
active: function () {
return (this.state !== null);
},
// return true if global selection sync can be enabled now
enabled: function () {
// console.log('enabled()');
// can we globally apply selection sync?
if (!NETDATA.options.current.sync_selection) {
return false;
}
return (this.dontSyncBefore <= Date.now());
},
// set the global selection sync master
setMaster: function (state) {
if (!this.enabled()) {
this.stop();
return;
}
if (this.state === state) {
return;
}
if (this.state !== null) {
this.stop();
}
if (NETDATA.options.debug.globalSelectionSync) {
console.log('globalSelectionSync.setMaster(' + state.id + ')');
}
state.selected = true;
this.state = state;
this.last_t = 0;
// find all slaves
let targets = NETDATA.intersectionObserver.targets();
this.slaves = [];
let len = targets.length;
while (len--) {
let st = targets[len];
if (this.state !== st && st.globalSelectionSyncIsEligible()) {
this.slaves.push(st);
}
}
// this.delay(100);
},
// stop global selection sync
stop: function () {
if (this.state !== null) {
if (NETDATA.options.debug.globalSelectionSync) {
console.log('globalSelectionSync.stop()');
}
let len = this.slaves.length;
while (len--) {
this.slaves[len].clearSelection();
}
this.state.clearSelection();
this.last_t = 0;
this.slaves = [];
this.state = null;
}
},
// delay global selection sync for some time
delay: function (ms) {
if (NETDATA.options.current.sync_selection) {
// if (NETDATA.options.debug.globalSelectionSync === true) {
if (NETDATA.options.debug.globalSelectionSync) {
console.log('globalSelectionSync.delay()');
}
if (typeof ms === 'number') {
this.dontSyncBefore = Date.now() + ms;
} else {
this.dontSyncBefore = Date.now() + NETDATA.options.current.sync_selection_delay;
}
}
},
__syncSlaves: function () {
// if (NETDATA.globalSelectionSync.enabled() === true) {
if (NETDATA.globalSelectionSync.enabled()) {
// if (NETDATA.options.debug.globalSelectionSync === true)
if (NETDATA.options.debug.globalSelectionSync) {
console.log('globalSelectionSync.__syncSlaves()');
}
let t = NETDATA.globalSelectionSync.last_t;
let len = NETDATA.globalSelectionSync.slaves.length;
while (len--) {
NETDATA.globalSelectionSync.slaves[len].setSelection(t);
}
this.timeoutId = undefined;
}
},
// sync all the visible charts to the given time
// this is to be called from the chart libraries
sync: function (state, t) {
// if (NETDATA.options.current.sync_selection === true) {
if (NETDATA.options.current.sync_selection) {
// if (NETDATA.options.debug.globalSelectionSync === true)
if (NETDATA.options.debug.globalSelectionSync) {
console.log('globalSelectionSync.sync(' + state.id + ', ' + t.toString() + ')');
}
this.setMaster(state);
if (t === this.last_t) {
return;
}
this.last_t = t;
if (state.foreignElementSelection !== null) {
state.foreignElementSelection.innerText = NETDATA.dateTime.localeDateString(t) + ' ' + NETDATA.dateTime.localeTimeString(t);
}
if (this.timeoutId) {
NETDATA.timeout.clear(this.timeoutId);
}
this.timeoutId = NETDATA.timeout.set(this.__syncSlaves, 0);
}
}
};
NETDATA.intersectionObserver = {
observer: null,
visible_targets: [],
options: {
root: null,
rootMargin: "0px",
threshold: null
},
enabled: function () {
return this.observer !== null;
},
globalReset: function () {
if (this.observer !== null) {
this.visible_targets = [];
this.observer.disconnect();
this.init();
}
},
targets: function () {
if (this.enabled() && this.visible_targets.length > 0) {
return this.visible_targets;
} else {
return NETDATA.options.targets;
}
},
switchChartVisibility: function () {
let old = this.__visibilityRatioOld;
if (old !== this.__visibilityRatio) {
if (old === 0 && this.__visibilityRatio > 0) {
this.unhideChart();
} else if (old > 0 && this.__visibilityRatio === 0) {
this.hideChart();
}
this.__visibilityRatioOld = this.__visibilityRatio;
}
},
handler: function (entries, observer) {
entries.forEach(function (entry) {
let state = NETDATA.chartState(entry.target);
let idx;
if (entry.intersectionRatio > 0) {
idx = NETDATA.intersectionObserver.visible_targets.indexOf(state);
if (idx === -1) {
if (NETDATA.scrollUp) {
NETDATA.intersectionObserver.visible_targets.push(state);
} else {
NETDATA.intersectionObserver.visible_targets.unshift(state);
}
}
else if (state.__visibilityRatio === 0) {
state.log("was not visible until now, but was already in visible_targets");
}
} else {
idx = NETDATA.intersectionObserver.visible_targets.indexOf(state);
if (idx !== -1) {
NETDATA.intersectionObserver.visible_targets.splice(idx, 1);
} else if (state.__visibilityRatio > 0) {
state.log("was visible, but not found in visible_targets");
}
}
state.__visibilityRatio = entry.intersectionRatio;
if (!NETDATA.options.current.async_on_scroll) {
if (window.requestIdleCallback) {
window.requestIdleCallback(function () {
NETDATA.intersectionObserver.switchChartVisibility.call(state);
}, {timeout: 100});
} else {
NETDATA.intersectionObserver.switchChartVisibility.call(state);
}
}
});
},
observe: function (state) {
if (this.enabled()) {
state.__visibilityRatioOld = 0;
state.__visibilityRatio = 0;
this.observer.observe(state.element);
state.isVisible = function () {
if (!NETDATA.options.current.update_only_visible) {
return true;
}
NETDATA.intersectionObserver.switchChartVisibility.call(this);
return this.__visibilityRatio > 0;
}
}
},
init: function () {
if (typeof netdataIntersectionObserver === 'undefined' || netdataIntersectionObserver) {
try {
this.observer = new IntersectionObserver(this.handler, this.options);
} catch (e) {
console.log("IntersectionObserver is not supported on this browser");
this.observer = null;
}
}
//else {
// console.log("IntersectionObserver is disabled");
//}
}
};
NETDATA.intersectionObserver.init();
// ----------------------------------------------------------------------------------------------------------------
// Our state object, where all per-chart values are stored
let chartState = function (element) {
this.element = element;
// IMPORTANT:
// all private functions should use 'that', instead of 'this'
// Alternatively, you can use arrow functions (related issue #4514)
let that = this;
// ============================================================================================================
// ERROR HANDLING
/* error() - private
* show an error instead of the chart
*/
let error = (msg) => {
let ret = true;
if (typeof netdataErrorCallback === 'function') {
ret = netdataErrorCallback('chart', this.id, msg);
}
if (ret) {
this.element.innerHTML = this.id + ': ' + msg;
this.enabled = false;
this.current = this.pan;
}
};
// console logging
this.log = function (msg) {
console.log(this.id + ' (' + this.library_name + ' ' + this.uuid + '): ' + msg);
};
this.debugLog = function (msg) {
if (this.debug) {
this.log(msg);
}
};
// ============================================================================================================
// EARLY INITIALIZATION
// These are variables that should exist even if the chart is never to be rendered.
// Be careful what you add here - there may be thousands of charts on the page.
// GUID - a unique identifier for the chart
this.uuid = NETDATA.guid();
// string - the name of chart
this.id = NETDATA.dataAttribute(this.element, 'netdata', undefined);
if (typeof this.id === 'undefined') {
error("netdata elements need data-netdata");
return;
}
// string - the key for localStorage settings
this.settings_id = NETDATA.dataAttribute(this.element, 'id', null);
// the user given dimensions of the element
this.width = NETDATA.dataAttribute(this.element, 'width', NETDATA.chartDefaults.width);
this.height = NETDATA.dataAttribute(this.element, 'height', NETDATA.chartDefaults.height);
this.height_original = this.height;
if (this.settings_id !== null) {
this.height = NETDATA.localStorageGet('chart_heights.' + this.settings_id, this.height, function (height) {
// this is the callback that will be called
// if and when the user resets all localStorage variables
// to their defaults
resizeChartToHeight(height);
});
}
// the chart library requested by the user
this.library_name = NETDATA.dataAttribute(this.element, 'chart-library', NETDATA.chartDefaults.library);
// check the requested library is available
// we don't initialize it here - it will be initialized when
// this chart will be first used
if (typeof NETDATA.chartLibraries[this.library_name] === 'undefined') {
NETDATA.error(402, this.library_name);
error('chart library "' + this.library_name + '" is not found');
this.enabled = false;
} else if (!NETDATA.chartLibraries[this.library_name].enabled) {
NETDATA.error(403, this.library_name);
error('chart library "' + this.library_name + '" is not enabled');
this.enabled = false;
} else {
this.library = NETDATA.chartLibraries[this.library_name];
}
this.auto = {
name: 'auto',
autorefresh: true,
force_update_at: 0, // the timestamp to force the update at
force_before_ms: null,
force_after_ms: null
};
this.pan = {
name: 'pan',
autorefresh: false,
force_update_at: 0, // the timestamp to force the update at
force_before_ms: null,
force_after_ms: null
};
this.zoom = {
name: 'zoom',
autorefresh: false,
force_update_at: 0, // the timestamp to force the update at
force_before_ms: null,
force_after_ms: null
};
// this is a pointer to one of the sub-classes below
// auto, pan, zoom
this.current = this.auto;
this.running = false; // boolean - true when the chart is being refreshed now
this.enabled = true; // boolean - is the chart enabled for refresh?
this.force_update_every = null; // number - overwrite the visualization update frequency of the chart
this.tmp = {};
this.foreignElementBefore = null;
this.foreignElementAfter = null;
this.foreignElementDuration = null;
this.foreignElementUpdateEvery = null;
this.foreignElementSelection = null;
// ============================================================================================================
// PRIVATE FUNCTIONS
// reset the runtime status variables to their defaults
const runtimeInit = () => {
this.paused = false; // boolean - is the chart paused for any reason?
this.selected = false; // boolean - is the chart shown a selection?
this.chart_created = false; // boolean - is the library.create() been called?
this.dom_created = false; // boolean - is the chart DOM been created?
this.fetching_data = false; // boolean - true while we fetch data via ajax
this.updates_counter = 0; // numeric - the number of refreshes made so far
this.updates_since_last_unhide = 0; // numeric - the number of refreshes made since the last time the chart was unhidden
this.updates_since_last_creation = 0; // numeric - the number of refreshes made since the last time the chart was created
this.tm = {
last_initialized: 0, // milliseconds - the timestamp it was last initialized
last_dom_created: 0, // milliseconds - the timestamp its DOM was last created
last_mode_switch: 0, // milliseconds - the timestamp it switched modes
last_info_downloaded: 0, // milliseconds - the timestamp we downloaded the chart
last_updated: 0, // the timestamp the chart last updated with data
pan_and_zoom_seq: 0, // the sequence number of the global synchronization
// between chart.
// Used with NETDATA.globalPanAndZoom.seq
last_visible_check: 0, // the time we last checked if it is visible
last_resized: 0, // the time the chart was resized
last_hidden: 0, // the time the chart was hidden
last_unhidden: 0, // the time the chart was unhidden
last_autorefreshed: 0 // the time the chart was last refreshed
};
this.data = null; // the last data as downloaded from the netdata server
this.data_url = 'invalid://'; // string - the last url used to update the chart
this.data_points = 0; // number - the number of points returned from netdata
this.data_after = 0; // milliseconds - the first timestamp of the data
this.data_before = 0; // milliseconds - the last timestamp of the data
this.data_update_every = 0; // milliseconds - the frequency to update the data
this.tmp = {}; // members that can be destroyed to save memory
};
// initialize all the variables that are required for the chart to be rendered
const lateInitialization = () => {
if (typeof this.host !== 'undefined') {
return;
}
// string - the netdata server URL, without any path
this.host = NETDATA.dataAttribute(this.element, 'host', NETDATA.serverDefault);
// make sure the host does not end with /
// all netdata API requests use absolute paths
while (this.host.slice(-1) === '/') {
this.host = this.host.substring(0, this.host.length - 1);
}
// string - the grouping method requested by the user
this.method = NETDATA.dataAttribute(this.element, 'method', NETDATA.chartDefaults.method);
this.gtime = NETDATA.dataAttribute(this.element, 'gtime', 0);
// the time-range requested by the user
this.after = NETDATA.dataAttribute(this.element, 'after', NETDATA.chartDefaults.after);
this.before = NETDATA.dataAttribute(this.element, 'before', NETDATA.chartDefaults.before);
// the pixels per point requested by the user
this.pixels_per_point = NETDATA.dataAttribute(this.element, 'pixels-per-point', 1);
this.points = NETDATA.dataAttribute(this.element, 'points', null);
// the forced update_every
this.force_update_every = NETDATA.dataAttribute(this.element, 'update-every', null);
if (typeof this.force_update_every !== 'number' || this.force_update_every <= 1) {
if (this.force_update_every !== null) {
this.log('ignoring invalid value of property data-update-every');
}
this.force_update_every = null;
} else {
this.force_update_every *= 1000;
}
// the dimensions requested by the user
this.dimensions = NETDATA.encodeURIComponent(NETDATA.dataAttribute(this.element, 'dimensions', null));
this.title = NETDATA.dataAttribute(this.element, 'title', null); // the title of the chart
this.units = NETDATA.dataAttribute(this.element, 'units', null); // the units of the chart dimensions
this.units_desired = NETDATA.dataAttribute(this.element, 'desired-units', NETDATA.options.current.units); // the units of the chart dimensions
this.units_current = this.units;
this.units_common = NETDATA.dataAttribute(this.element, 'common-units', null);
// additional options to pass to netdata
this.append_options = NETDATA.encodeURIComponent(NETDATA.dataAttribute(this.element, 'append-options', null));
// override options to pass to netdata
this.override_options = NETDATA.encodeURIComponent(NETDATA.dataAttribute(this.element, 'override-options', null));
this.debug = NETDATA.dataAttributeBoolean(this.element, 'debug', false);
this.value_decimal_detail = -1;
let d = NETDATA.dataAttribute(this.element, 'decimal-digits', -1);
if (typeof d === 'number') {
this.value_decimal_detail = d;
} else if (typeof d !== 'undefined') {
this.log('ignoring decimal-digits value: ' + d.toString());
}
// if we need to report the rendering speed
// find the element that needs to be updated
let refresh_dt_element_name = NETDATA.dataAttribute(this.element, 'dt-element-name', null); // string - the element to print refresh_dt_ms
if (refresh_dt_element_name !== null) {
this.refresh_dt_element = document.getElementById(refresh_dt_element_name) || null;
}
else {
this.refresh_dt_element = null;
}
this.dimensions_visibility = new dimensionsVisibility(that);
this.netdata_first = 0; // milliseconds - the first timestamp in netdata
this.netdata_last = 0; // milliseconds - the last timestamp in netdata
this.requested_after = null; // milliseconds - the timestamp of the request after param
this.requested_before = null; // milliseconds - the timestamp of the request before param
this.requested_padding = null;
this.view_after = 0;
this.view_before = 0;
this.refresh_dt_ms = 0; // milliseconds - the time the last refresh took
// how many retries we have made to load chart data from the server
this.retries_on_data_failures = 0;
// color management
this.colors = null;
this.colors_assigned = null;
this.colors_available = null;
this.colors_custom = null;
this.element_message = null; // the element already created by the user
this.element_chart = null; // the element with the chart
this.element_legend = null; // the element with the legend of the chart (if created by us)
this.element_legend_childs = {
content: null,
hidden: null,
title_date: null,
title_time: null,
title_units: null,
perfect_scroller: null, // the container to apply perfect scroller to
series: null
};
this.chart_url = null; // string - the url to download chart info
this.chart = null; // object - the chart as downloaded from the server
const getForeignElementById = (opt) => {
let id = NETDATA.dataAttribute(this.element, opt, null);
if (id === null) {
//this.log('option "' + opt + '" is undefined');
return null;
}
let el = document.getElementById(id);
if (typeof el === 'undefined') {
this.log('cannot find an element with name "' + id.toString() + '"');
return null;
}
return el;
};
this.foreignElementBefore = getForeignElementById('show-before-at');
this.foreignElementAfter = getForeignElementById('show-after-at');
this.foreignElementDuration = getForeignElementById('show-duration-at');
this.foreignElementUpdateEvery = getForeignElementById('show-update-every-at');
this.foreignElementSelection = getForeignElementById('show-selection-at');
};
const destroyDOM = () => {
if (!this.enabled) {
return;
}
if (this.debug) {
this.log('destroyDOM()');
}
// this.element.className = 'netdata-message icon';
// this.element.innerHTML = '<i class="fas fa-sync"></i> netdata';
this.element.innerHTML = '';
this.element_message = null;
this.element_legend = null;
this.element_chart = null;
this.element_legend_childs.series = null;
this.chart_created = false;
this.dom_created = false;
this.tm.last_resized = 0;
this.tm.last_dom_created = 0;
};
const maxMessageFontSize = () => {
let screenHeight = screen.height;
let el = this.element;
// normally we want a font size, as tall as the element
let h = el.clientHeight;
// but give it some air, 20% let's say, or 5 pixels min
let lost = Math.max(h * 0.2, 5);
h -= lost;
// center the text, vertically
let paddingTop = (lost - 5) / 2;
// but check the width too
// it should fit 10 characters in it
let w = el.clientWidth / 10;
if (h > w) {
paddingTop += (h - w) / 2;
h = w;
}
// and don't make it too huge
// 5% of the screen size is good
if (h > screenHeight / 20) {
paddingTop += (h - (screenHeight / 20)) / 2;
h = screenHeight / 20;
}
// set it
this.element_message.style.fontSize = h.toString() + 'px';
this.element_message.style.paddingTop = paddingTop.toString() + 'px';
};
const showMessageIcon = (icon) => {
this.element_message.innerHTML = icon;
maxMessageFontSize();
$(this.element_message).removeClass('hidden');
this.tmp.___messageHidden___ = undefined;
};
const showLoading = () => {
if (!this.chart_created) {
showMessageIcon(NETDATA.icons.loading + ' netdata');
return true;
}
return false;
};
let createDOM = () => {
if (!this.enabled) {
return;
}
lateInitialization();
destroyDOM();
if (this.debug) {
this.log('createDOM()');
}
this.element_message = document.createElement('div');
this.element_message.className = 'netdata-message icon hidden';
this.element.appendChild(this.element_message);
this.dom_created = true;
this.chart_created = false;
this.tm.last_dom_created = this.tm.last_resized = Date.now();
showLoading();
};
const initDOM = () => {
this.element.className = this.library.container_class(that);
if (typeof(this.width) === 'string') {
this.element.style.width = this.width;
} else if (typeof(this.width) === 'number') {
this.element.style.width = this.width.toString() + 'px';
}
if (typeof(this.library.aspect_ratio) === 'undefined') {
if (typeof(this.height) === 'string') {
this.element.style.height = this.height;
} else if (typeof(this.height) === 'number') {
this.element.style.height = this.height.toString() + 'px';
}
}
if (NETDATA.chartDefaults.min_width !== null) {
this.element.style.min_width = NETDATA.chartDefaults.min_width;
}
};
const invisibleSearchableText = () => {
return '<span style="position:absolute; opacity: 0; width: 0px;">' + this.id + '</span>';
};
/* init() private
* initialize state variables
* destroy all (possibly) created state elements
* create the basic DOM for a chart
*/
const init = (opt) => {
if (!this.enabled) {
return;
}
runtimeInit();
this.element.innerHTML = invisibleSearchableText();
this.tm.last_initialized = Date.now();
this.setMode('auto');
if (opt !== 'fast') {
if (this.isVisible(true) || opt === 'force') {
createDOM();
}
}
};
const hideMessage = () => {
if (typeof this.tmp.___messageHidden___ === 'undefined') {
this.tmp.___messageHidden___ = true;
$(this.element_message).addClass('hidden');
}
};
const showRendering = () => {
let icon;
if (this.chart !== null) {
if (this.chart.chart_type === 'line') {
icon = NETDATA.icons.lineChart;
} else {
icon = NETDATA.icons.areaChart;
}
}
else {
icon = NETDATA.icons.noChart;
}
showMessageIcon(icon + ' netdata' + invisibleSearchableText());
};
const isHidden = () => {
return (typeof this.tmp.___chartIsHidden___ !== 'undefined');
};
// hide the chart, when it is not visible - called from isVisible()
this.hideChart = function () {
// hide it, if it is not already hidden
if (isHidden()) {
return;
}
if (this.chart_created) {
if (NETDATA.options.current.show_help) {
if (this.element_legend_childs.toolbox !== null) {
if (this.debug) {
this.log('hideChart(): hidding legend popovers');
}
$(this.element_legend_childs.toolbox_left).popover('hide');
$(this.element_legend_childs.toolbox_reset).popover('hide');
$(this.element_legend_childs.toolbox_right).popover('hide');
$(this.element_legend_childs.toolbox_zoomin).popover('hide');
$(this.element_legend_childs.toolbox_zoomout).popover('hide');
}
if (this.element_legend_childs.resize_handler !== null) {
$(this.element_legend_childs.resize_handler).popover('hide');
}
if (this.element_legend_childs.content !== null) {
$(this.element_legend_childs.content).popover('hide');
}
}
if (NETDATA.options.current.destroy_on_hide) {
if (this.debug) {
this.log('hideChart(): initializing chart');
}
// we should destroy it
init('force');
} else {
if (this.debug) {
this.log('hideChart(): hiding chart');
}
showRendering();
this.element_chart.style.display = 'none';
this.element.style.willChange = 'auto';
if (this.element_legend !== null) {
this.element_legend.style.display = 'none';
}
if (this.element_legend_childs.toolbox !== null) {
this.element_legend_childs.toolbox.style.display = 'none';
}
if (this.element_legend_childs.resize_handler !== null) {
this.element_legend_childs.resize_handler.style.display = 'none';
}
this.tm.last_hidden = Date.now();
// de-allocate data
// This works, but I not sure there are no corner cases somewhere
// so it is commented - if the user has memory issues he can
// set Destroy on Hide for all charts
// this.data = null;
}
}
this.tmp.___chartIsHidden___ = true;
};
// unhide the chart, when it is visible - called from isVisible()
this.unhideChart = function () {
if (!isHidden()) {
return;
}
this.tmp.___chartIsHidden___ = undefined;
this.updates_since_last_unhide = 0;
if (!this.chart_created) {
if (this.debug) {
this.log('unhideChart(): initializing chart');
}
// we need to re-initialize it, to show our background
// logo in bootstrap tabs, until the chart loads
init('force');
} else {
if (this.debug) {
this.log('unhideChart(): unhiding chart');
}
this.element.style.willChange = 'transform';
this.tm.last_unhidden = Date.now();
this.element_chart.style.display = '';
if (this.element_legend !== null) {
this.element_legend.style.display = '';
}
if (this.element_legend_childs.toolbox !== null) {
this.element_legend_childs.toolbox.style.display = '';
}
if (this.element_legend_childs.resize_handler !== null) {
this.element_legend_childs.resize_handler.style.display = '';
}
resizeChart();
hideMessage();
}
if (this.__redraw_on_unhide) {
if (this.debug) {
this.log("redrawing chart on unhide");
}
this.__redraw_on_unhide = undefined;
this.redrawChart();
}
};
const canBeRendered = (uncached_visibility) => {
if (this.debug) {
this.log('canBeRendered() called');
}
if (!NETDATA.options.current.update_only_visible) {
return true;
}
let ret = (
(
NETDATA.options.page_is_visible ||
NETDATA.options.current.stop_updates_when_focus_is_lost === false ||
this.updates_since_last_unhide === 0
)
&& isHidden() === false && this.isVisible(uncached_visibility)
);
if (this.debug) {
this.log('canBeRendered(): ' + ret);
}
return ret;
};
// https://github.com/petkaantonov/bluebird/wiki/Optimization-killers
const callChartLibraryUpdateSafely = (data) => {
let status;
// we should not do this here
// if we prevent rendering the chart then:
// 1. globalSelectionSync will be wrong
// 2. globalPanAndZoom will be wrong
//if (canBeRendered(true) === false)
// return false;
if (NETDATA.options.fake_chart_rendering) {
return true;
}
this.updates_counter++;
this.updates_since_last_unhide++;
this.updates_since_last_creation++;
if (NETDATA.options.debug.chart_errors) {
status = this.library.update(that, data);
} else {
try {
status = this.library.update(that, data);
} catch (err) {
status = false;
}
}
if (!status) {
error('chart failed to be updated as ' + this.library_name);
return false;
}
return true;
};
// https://github.com/petkaantonov/bluebird/wiki/Optimization-killers
const callChartLibraryCreateSafely = (data) => {
let status;
// we should not do this here
// if we prevent rendering the chart then:
// 1. globalSelectionSync will be wrong
// 2. globalPanAndZoom will be wrong
//if (canBeRendered(true) === false)
// return false;
if (NETDATA.options.fake_chart_rendering) {
return true;
}
this.updates_counter++;
this.updates_since_last_unhide++;
this.updates_since_last_creation++;
if (NETDATA.options.debug.chart_errors) {
status = this.library.create(that, data);
} else {
try {
status = this.library.create(that, data);
} catch (err) {
status = false;
}
}
if (!status) {
error('chart failed to be created as ' + this.library_name);
return false;
}
this.chart_created = true;
this.updates_since_last_creation = 0;
return true;
};
// ----------------------------------------------------------------------------------------------------------------
// Chart Resize
// resizeChart() - private
// to be called just before the chart library to make sure that
// a properly sized dom is available
const resizeChart = () => {
if (this.tm.last_resized < NETDATA.options.last_page_resize) {
if (!this.chart_created) {
return;
}
if (this.needsRecreation()) {
if (this.debug) {
this.log('resizeChart(): initializing chart');
}
init('force');
} else if (typeof this.library.resize === 'function') {
if (this.debug) {
this.log('resizeChart(): resizing chart');
}
this.library.resize(that);
if (this.element_legend_childs.perfect_scroller !== null) {
Ps.update(this.element_legend_childs.perfect_scroller);
}
maxMessageFontSize();
}
this.tm.last_resized = Date.now();
}
};
// this is the actual chart resize algorithm
// it will:
// - resize the entire container
// - update the internal states
// - resize the chart as the div changes height
// - update the scrollbar of the legend
const resizeChartToHeight = (h) => {
// console.log(h);
this.element.style.height = h;
if (this.settings_id !== null) {
NETDATA.localStorageSet('chart_heights.' + this.settings_id, h);
}
let now = Date.now();
NETDATA.options.last_page_scroll = now;
NETDATA.options.auto_refresher_stop_until = now + NETDATA.options.current.stop_updates_while_resizing;
// force a resize
this.tm.last_resized = 0;
resizeChart();
};
this.resizeForPrint = function () {
if (typeof this.element_legend_childs !== 'undefined' && this.element_legend_childs.perfect_scroller !== null) {
let current = this.element.clientHeight;
let optimal = current
+ this.element_legend_childs.perfect_scroller.scrollHeight
- this.element_legend_childs.perfect_scroller.clientHeight;
if (optimal > current) {
// this.log('resized');
this.element.style.height = optimal + 'px';
this.library.resize(this);
}
}
};
this.resizeHandler = function (e) {
e.preventDefault();
if (typeof this.event_resize === 'undefined'
|| this.event_resize.chart_original_w === 'undefined'
|| this.event_resize.chart_original_h === 'undefined') {
this.event_resize = {
chart_original_w: this.element.clientWidth,
chart_original_h: this.element.clientHeight,
last: 0
};
}
if (e.type === 'touchstart') {
this.event_resize.mouse_start_x = e.touches.item(0).pageX;
this.event_resize.mouse_start_y = e.touches.item(0).pageY;
} else {
this.event_resize.mouse_start_x = e.clientX;
this.event_resize.mouse_start_y = e.clientY;
}
this.event_resize.chart_start_w = this.element.clientWidth;
this.event_resize.chart_start_h = this.element.clientHeight;
this.event_resize.chart_last_w = this.element.clientWidth;
this.event_resize.chart_last_h = this.element.clientHeight;
let now = Date.now();
if (now - this.event_resize.last <= NETDATA.options.current.double_click_speed && this.element_legend_childs.perfect_scroller !== null) {
// double click / double tap event
// console.dir(this.element_legend_childs.content);
// console.dir(this.element_legend_childs.perfect_scroller);
// the optimal height of the chart
// showing the entire legend
let optimal = this.event_resize.chart_last_h
+ this.element_legend_childs.perfect_scroller.scrollHeight
- this.element_legend_childs.perfect_scroller.clientHeight;
// if we are not optimal, be optimal
if (this.event_resize.chart_last_h !== optimal) {
// this.log('resize to optimal, current = ' + this.event_resize.chart_last_h.toString() + 'px, original = ' + this.event_resize.chart_original_h.toString() + 'px, optimal = ' + optimal.toString() + 'px, internal = ' + this.height_original.toString());
resizeChartToHeight(optimal.toString() + 'px');
}
// else if the current height is not the original/saved height
// reset to the original/saved height
else if (this.event_resize.chart_last_h !== this.event_resize.chart_original_h) {
// this.log('resize to original, current = ' + this.event_resize.chart_last_h.toString() + 'px, original = ' + this.event_resize.chart_original_h.toString() + 'px, optimal = ' + optimal.toString() + 'px, internal = ' + this.height_original.toString());
resizeChartToHeight(this.event_resize.chart_original_h.toString() + 'px');
}
// else if the current height is not the internal default height
// reset to the internal default height
else if ((this.event_resize.chart_last_h.toString() + 'px') !== this.height_original) {
// this.log('resize to internal default, current = ' + this.event_resize.chart_last_h.toString() + 'px, original = ' + this.event_resize.chart_original_h.toString() + 'px, optimal = ' + optimal.toString() + 'px, internal = ' + this.height_original.toString());
resizeChartToHeight(this.height_original.toString());
}
// else if the current height is not the firstchild's clientheight
// resize to it
else if (typeof this.element_legend_childs.perfect_scroller.firstChild !== 'undefined') {
let parent_rect = this.element.getBoundingClientRect();
let content_rect = this.element_legend_childs.perfect_scroller.firstElementChild.getBoundingClientRect();
let wanted = content_rect.top - parent_rect.top + this.element_legend_childs.perfect_scroller.firstChild.clientHeight + 18; // 15 = toolbox + 3 space
// console.log(parent_rect);
// console.log(content_rect);
// console.log(wanted);
// this.log('resize to firstChild, current = ' + this.event_resize.chart_last_h.toString() + 'px, original = ' + this.event_resize.chart_original_h.toString() + 'px, optimal = ' + optimal.toString() + 'px, internal = ' + this.height_original.toString() + 'px, firstChild = ' + wanted.toString() + 'px' );
if (this.event_resize.chart_last_h !== wanted) {
resizeChartToHeight(wanted.toString() + 'px');
}
}
} else {
this.event_resize.last = now;
// process movement event
document.onmousemove =
document.ontouchmove =
this.element_legend_childs.resize_handler.onmousemove =
this.element_legend_childs.resize_handler.ontouchmove =
function (e) {
let y = null;
switch (e.type) {
case 'mousemove':
y = e.clientY;
break;
case 'touchmove':
y = e.touches.item(e.touches - 1).pageY;
break;
}
if (y !== null) {
let newH = that.event_resize.chart_start_h + y - that.event_resize.mouse_start_y;
if (newH >= 70 && newH !== that.event_resize.chart_last_h) {
resizeChartToHeight(newH.toString() + 'px');
that.event_resize.chart_last_h = newH;
}
}
};
// process end event
document.onmouseup =
document.ontouchend =
this.element_legend_childs.resize_handler.onmouseup =
this.element_legend_childs.resize_handler.ontouchend =
function (e) {
void(e);
// remove all the hooks
document.onmouseup =
document.onmousemove =
document.ontouchmove =
document.ontouchend =
that.element_legend_childs.resize_handler.onmousemove =
that.element_legend_childs.resize_handler.ontouchmove =
that.element_legend_childs.resize_handler.onmouseout =
that.element_legend_childs.resize_handler.onmouseup =
that.element_legend_childs.resize_handler.ontouchend =
null;
// allow auto-refreshes
NETDATA.options.auto_refresher_stop_until = 0;
};
}
};
const noDataToShow = () => {
showMessageIcon(NETDATA.icons.noData + ' empty');
this.legendUpdateDOM();
this.tm.last_autorefreshed = Date.now();
// this.data_update_every = 30 * 1000;
//this.element_chart.style.display = 'none';
//if (this.element_legend !== null) this.element_legend.style.display = 'none';
//this.tmp.___chartIsHidden___ = true;
};
// ============================================================================================================
// PUBLIC FUNCTIONS
this.error = function (msg) {
error(msg);
};
this.setMode = function (m) {
if (this.current !== null && this.current.name === m) {
return;
}
if (m === 'auto') {
this.current = this.auto;
} else if (m === 'pan') {
this.current = this.pan;
} else if (m === 'zoom') {
this.current = this.zoom;
} else {
this.current = this.auto;
}
this.current.force_update_at = 0;
this.current.force_before_ms = null;
this.current.force_after_ms = null;
this.tm.last_mode_switch = Date.now();
};
// ----------------------------------------------------------------------------------------------------------------
// global selection sync for slaves
// can the chart participate to the global selection sync as a slave?
this.globalSelectionSyncIsEligible = function () {
return (
this.enabled &&
this.library !== null &&
typeof this.library.setSelection === 'function' &&
this.isVisible() &&
this.chart_created
);
};
this.setSelection = function (t) {
if (typeof this.library.setSelection === 'function') {
// this.selected = this.library.setSelection(this, t) === true;
this.selected = this.library.setSelection(this, t);
} else {
this.selected = true;
}
if (this.selected && this.debug) {
this.log('selection set to ' + t.toString());
}
if (this.foreignElementSelection !== null) {
this.foreignElementSelection.innerText = NETDATA.dateTime.localeDateString(t) + ' ' + NETDATA.dateTime.localeTimeString(t);
}
return this.selected;
};
this.clearSelection = function () {
if (this.selected) {
if (typeof this.library.clearSelection === 'function') {
this.selected = (this.library.clearSelection(this) !== true);
} else {
this.selected = false;
}
if (this.selected === false && this.debug) {
this.log('selection cleared');
}
if (this.foreignElementSelection !== null) {
this.foreignElementSelection.innerText = '';
}
this.legendReset();
}
return this.selected;
};
// ----------------------------------------------------------------------------------------------------------------
// find if a timestamp (ms) is shown in the current chart
this.timeIsVisible = function (t) {
return (t >= this.data_after && t <= this.data_before);
};
this.calculateRowForTime = function (t) {
if (!this.timeIsVisible(t)) {
return -1;
}
return Math.floor((t - this.data_after) / this.data_update_every);
};
// ----------------------------------------------------------------------------------------------------------------
this.pauseChart = function () {
if (!this.paused) {
if (this.debug) {
this.log('pauseChart()');
}
this.paused = true;
}
};
this.unpauseChart = function () {
if (this.paused) {
if (this.debug) {
this.log('unpauseChart()');
}
this.paused = false;
}
};
this.resetChart = function (dontClearMaster, dontUpdate) {
if (this.debug) {
this.log('resetChart(' + dontClearMaster + ', ' + dontUpdate + ') called');
}
if (typeof dontClearMaster === 'undefined') {
dontClearMaster = false;
}
if (typeof dontUpdate === 'undefined') {
dontUpdate = false;
}
if (dontClearMaster !== true && NETDATA.globalPanAndZoom.isMaster(this)) {
if (this.debug) {
this.log('resetChart() diverting to clearMaster().');
}
// this will call us back with master === true
NETDATA.globalPanAndZoom.clearMaster();
return;
}
this.clearSelection();
this.tm.pan_and_zoom_seq = 0;
this.setMode('auto');
this.current.force_update_at = 0;
this.current.force_before_ms = null;
this.current.force_after_ms = null;
this.tm.last_autorefreshed = 0;
this.paused = false;
this.selected = false;
this.enabled = true;
// this.debug = false;
// do not update the chart here
// or the chart will flip-flop when it is the master
// of a selection sync and another chart becomes
// the new master
if (dontUpdate !== true && this.isVisible()) {
this.updateChart();
}
};
this.updateChartPanOrZoom = function (after, before, callback) {
let logme = 'updateChartPanOrZoom(' + after + ', ' + before + '): ';
let ret = true;
NETDATA.globalPanAndZoom.delay();
NETDATA.globalSelectionSync.delay();
if (this.debug) {
this.log(logme);
}
if (before < after) {
if (this.debug) {
this.log(logme + 'flipped parameters, rejecting it.');
}
return false;
}
if (typeof this.fixed_min_duration === 'undefined') {
this.fixed_min_duration = Math.round((this.chartWidth() / 30) * this.chart.update_every * 1000);
}
let min_duration = this.fixed_min_duration;
let current_duration = Math.round(this.view_before - this.view_after);
// round the numbers
after = Math.round(after);
before = Math.round(before);
// align them to update_every
// stretching them further away
after -= after % this.data_update_every;
before += this.data_update_every - (before % this.data_update_every);
// the final wanted duration
let wanted_duration = before - after;
// to allow panning, accept just a point below our minimum
if ((current_duration - this.data_update_every) < min_duration) {
min_duration = current_duration - this.data_update_every;
}
// we do it, but we adjust to minimum size and return false
// when the wanted size is below the current and the minimum
// and we zoom
if (wanted_duration < current_duration && wanted_duration < min_duration) {
if (this.debug) {
this.log(logme + 'too small: min_duration: ' + (min_duration / 1000).toString() + ', wanted: ' + (wanted_duration / 1000).toString());
}
min_duration = this.fixed_min_duration;
let dt = (min_duration - wanted_duration) / 2;
before += dt;
after -= dt;
wanted_duration = before - after;
ret = false;
}
let tolerance = this.data_update_every * 2;
let movement = Math.abs(before - this.view_before);
if (Math.abs(current_duration - wanted_duration) <= tolerance && movement <= tolerance && ret) {
if (this.debug) {
this.log(logme + 'REJECTING UPDATE: current/min duration: ' + (current_duration / 1000).toString() + '/' + (this.fixed_min_duration / 1000).toString() + ', wanted duration: ' + (wanted_duration / 1000).toString() + ', duration diff: ' + (Math.round(Math.abs(current_duration - wanted_duration) / 1000)).toString() + ', movement: ' + (movement / 1000).toString() + ', tolerance: ' + (tolerance / 1000).toString() + ', returning: ' + false);
}
return false;
}
if (this.current.name === 'auto') {
this.log(logme + 'caller called me with mode: ' + this.current.name);
this.setMode('pan');
}
if (this.debug) {
this.log(logme + 'ACCEPTING UPDATE: current/min duration: ' + (current_duration / 1000).toString() + '/' + (this.fixed_min_duration / 1000).toString() + ', wanted duration: ' + (wanted_duration / 1000).toString() + ', duration diff: ' + (Math.round(Math.abs(current_duration - wanted_duration) / 1000)).toString() + ', movement: ' + (movement / 1000).toString() + ', tolerance: ' + (tolerance / 1000).toString() + ', returning: ' + ret);
}
this.current.force_update_at = Date.now() + NETDATA.options.current.pan_and_zoom_delay;
this.current.force_after_ms = after;
this.current.force_before_ms = before;
NETDATA.globalPanAndZoom.setMaster(this, after, before);
if (ret && typeof callback === 'function') {
callback();
}
return ret;
};
this.updateChartPanOrZoomAsyncTimeOutId = undefined;
this.updateChartPanOrZoomAsync = function (after, before, callback) {
NETDATA.globalPanAndZoom.delay();
NETDATA.globalSelectionSync.delay();
if (!NETDATA.globalPanAndZoom.isMaster(this)) {
this.pauseChart();
NETDATA.globalPanAndZoom.setMaster(this, after, before);
// NETDATA.globalSelectionSync.stop();
NETDATA.globalSelectionSync.setMaster(this);
}
if (this.updateChartPanOrZoomAsyncTimeOutId) {
NETDATA.timeout.clear(this.updateChartPanOrZoomAsyncTimeOutId);
}
NETDATA.timeout.set(function () {
that.updateChartPanOrZoomAsyncTimeOutId = undefined;
that.updateChartPanOrZoom(after, before, callback);
}, 0);
};
let _unitsConversionLastUnits = undefined;
let _unitsConversionLastUnitsDesired = undefined;
let _unitsConversionLastMin = undefined;
let _unitsConversionLastMax = undefined;
let _unitsConversion = function (value) {
return value;
};
this.unitsConversionSetup = function (min, max) {
if (this.units !== _unitsConversionLastUnits
|| this.units_desired !== _unitsConversionLastUnitsDesired
|| min !== _unitsConversionLastMin
|| max !== _unitsConversionLastMax) {
_unitsConversionLastUnits = this.units;
_unitsConversionLastUnitsDesired = this.units_desired;
_unitsConversionLastMin = min;
_unitsConversionLastMax = max;
_unitsConversion = NETDATA.unitsConversion.get(this.uuid, min, max, this.units, this.units_desired, this.units_common, function (units) {
// console.log('switching units from ' + that.units.toString() + ' to ' + units.toString());
that.units_current = units;
that.legendSetUnitsString(that.units_current);
});
}
};
let _legendFormatValueChartDecimalsLastMin = undefined;
let _legendFormatValueChartDecimalsLastMax = undefined;
let _legendFormatValueChartDecimals = -1;
let _intlNumberFormat = null;
this.legendFormatValueDecimalsFromMinMax = function (min, max) {
if (min === _legendFormatValueChartDecimalsLastMin && max === _legendFormatValueChartDecimalsLastMax) {
return;
}
this.unitsConversionSetup(min, max);
if (_unitsConversion !== null) {
min = _unitsConversion(min);
max = _unitsConversion(max);
if (typeof min !== 'number' || typeof max !== 'number') {
return;
}
}
_legendFormatValueChartDecimalsLastMin = min;
_legendFormatValueChartDecimalsLastMax = max;
let old = _legendFormatValueChartDecimals;
if (this.data !== null && this.data.min === this.data.max)
// it is a fixed number, let the visualizer decide based on the value
{
_legendFormatValueChartDecimals = -1;
} else if (this.value_decimal_detail !== -1)
// there is an override
{
_legendFormatValueChartDecimals = this.value_decimal_detail;
} else {
// ok, let's calculate the proper number of decimal points
let delta;
if (min === max) {
delta = Math.abs(min);
} else {
delta = Math.abs(max - min);
}
if (delta > 1000) {
_legendFormatValueChartDecimals = 0;
} else if (delta > 10) {
_legendFormatValueChartDecimals = 1;
} else if (delta > 1) {
_legendFormatValueChartDecimals = 2;
} else if (delta > 0.1) {
_legendFormatValueChartDecimals = 2;
} else if (delta > 0.01) {
_legendFormatValueChartDecimals = 4;
} else if (delta > 0.001) {
_legendFormatValueChartDecimals = 5;
} else if (delta > 0.0001) {
_legendFormatValueChartDecimals = 6;
} else {
_legendFormatValueChartDecimals = 7;
}
}
if (_legendFormatValueChartDecimals !== old) {
if (_legendFormatValueChartDecimals < 0) {
_intlNumberFormat = null;
} else {
_intlNumberFormat = NETDATA.fastNumberFormat.get(
_legendFormatValueChartDecimals,
_legendFormatValueChartDecimals
);
}
}
};
this.legendFormatValue = function (value) {
if (typeof value !== 'number') {
return '-';
}
value = _unitsConversion(value);
if (typeof value !== 'number') {
return value;
}
if (_intlNumberFormat !== null) {
return _intlNumberFormat.format(value);
}
let dmin, dmax;
if (this.value_decimal_detail !== -1) {
dmin = dmax = this.value_decimal_detail;
} else {
dmin = 0;
let abs = (value < 0) ? -value : value;
if (abs > 1000) {
dmax = 0;
} else if (abs > 10) {
dmax = 1;
} else if (abs > 1) {
dmax = 2;
} else if (abs > 0.1) {
dmax = 2;
} else if (abs > 0.01) {
dmax = 4;
} else if (abs > 0.001) {
dmax = 5;
} else if (abs > 0.0001) {
dmax = 6;
} else {
dmax = 7;
}
}
return NETDATA.fastNumberFormat.get(dmin, dmax).format(value);
};
this.legendSetLabelValue = function (label, value) {
let series = this.element_legend_childs.series[label];
if (typeof series === 'undefined') {
return;
}
if (series.value === null && series.user === null) {
return;
}
/*
// this slows down firefox and edge significantly
// since it requires to use innerHTML(), instead of innerText()
// if the value has not changed, skip DOM update
//if (series.last === value) return;
let s, r;
if (typeof value === 'number') {
let v = Math.abs(value);
s = r = this.legendFormatValue(value);
if (typeof series.last === 'number') {
if (v > series.last) s += '<i class="fas fa-angle-up" style="width: 8px; text-align: center; overflow: hidden; vertical-align: middle;"></i>';
else if (v < series.last) s += '<i class="fas fa-angle-down" style="width: 8px; text-align: center; overflow: hidden; vertical-align: middle;"></i>';
else s += '<i class="fas fa-angle-left" style="width: 8px; text-align: center; overflow: hidden; vertical-align: middle;"></i>';
}
else s += '<i class="fas fa-angle-right" style="width: 8px; text-align: center; overflow: hidden; vertical-align: middle;"></i>';
series.last = v;
}
else {
if (value === null)
s = r = '';
else
s = r = value;
series.last = value;
}
*/
let s = this.legendFormatValue(value);
// caching: do not update the update to show the same value again
if (s === series.last_shown_value) {
return;
}
series.last_shown_value = s;
if (series.value !== null) {
series.value.innerText = s;
}
if (series.user !== null) {
series.user.innerText = s;
}
};
this.legendSetDateString = function (date) {
if (this.element_legend_childs.title_date !== null && date !== this.tmp.__last_shown_legend_date) {
this.element_legend_childs.title_date.innerText = date;
this.tmp.__last_shown_legend_date = date;
}
};
this.legendSetTimeString = function (time) {
if (this.element_legend_childs.title_time !== null && time !== this.tmp.__last_shown_legend_time) {
this.element_legend_childs.title_time.innerText = time;
this.tmp.__last_shown_legend_time = time;
}
};
this.legendSetUnitsString = function (units) {
if (this.element_legend_childs.title_units !== null && units !== this.tmp.__last_shown_legend_units) {
this.element_legend_childs.title_units.innerText = units;
this.tmp.__last_shown_legend_units = units;
}
};
this.legendSetDateLast = {
ms: 0,
date: undefined,
time: undefined
};
this.legendSetDate = function (ms) {
if (typeof ms !== 'number') {
this.legendShowUndefined();
return;
}
if (this.legendSetDateLast.ms !== ms) {
let d = new Date(ms);
this.legendSetDateLast.ms = ms;
this.legendSetDateLast.date = NETDATA.dateTime.localeDateString(d);
this.legendSetDateLast.time = NETDATA.dateTime.localeTimeString(d);
}
this.legendSetDateString(this.legendSetDateLast.date);
this.legendSetTimeString(this.legendSetDateLast.time);
this.legendSetUnitsString(this.units_current)
};
this.legendShowUndefined = function () {
this.legendSetDateString(this.legendPluginModuleString(false));
this.legendSetTimeString(this.chart.context.toString());
// this.legendSetUnitsString(' ');
if (this.data && this.element_legend_childs.series !== null) {
let labels = this.data.dimension_names;
let i = labels.length;
while (i--) {
let label = labels[i];
if (typeof label === 'undefined' || typeof this.element_legend_childs.series[label] === 'undefined') {
continue;
}
this.legendSetLabelValue(label, null);
}
}
};
this.legendShowLatestValues = function () {
if (this.chart === null) {
return;
}
if (this.selected) {
return;
}
if (this.data === null || this.element_legend_childs.series === null) {
this.legendShowUndefined();
return;
}
let show_undefined = true;
if (Math.abs(this.netdata_last - this.view_before) <= this.data_update_every) {
show_undefined = false;
}
if (show_undefined) {
this.legendShowUndefined();
return;
}
this.legendSetDate(this.view_before);
let labels = this.data.dimension_names;
let i = labels.length;
while (i--) {
let label = labels[i];
if (typeof label === 'undefined') {
continue;
}
if (typeof this.element_legend_childs.series[label] === 'undefined') {
continue;
}
this.legendSetLabelValue(label, this.data.view_latest_values[i]);
}
};
this.legendReset = function () {
this.legendShowLatestValues();
};
// this should be called just ONCE per dimension per chart
this.__chartDimensionColor = function (label) {
let c = NETDATA.commonColors.get(this, label);
// it is important to maintain a list of colors
// for this chart only, since the chart library
// uses this to assign colors to dimensions in the same
// order the dimension are given to it
this.colors.push(c);
return c;
};
this.chartPrepareColorPalette = function () {
NETDATA.commonColors.refill(this);
};
// get the ordered list of chart colors
// this includes user defined colors
this.chartCustomColors = function () {
this.chartPrepareColorPalette();
let colors;
if (this.colors_custom.length) {
colors = this.colors_custom;
} else {
colors = this.colors;
}
if (this.debug) {
this.log("chartCustomColors() returns:");
this.log(colors);
}
return colors;
};
// get the ordered list of chart ASSIGNED colors
// (this returns only the colors that have been
// assigned to dimensions, prepended with any
// custom colors defined)
this.chartColors = function () {
this.chartPrepareColorPalette();
if (this.debug) {
this.log("chartColors() returns:");
this.log(this.colors);
}
return this.colors;
};
this.legendPluginModuleString = function (withContext) {
let str = ' ';
let context = '';
if (typeof this.chart !== 'undefined') {
if (withContext && typeof this.chart.context === 'string') {
context = this.chart.context;
}
if (typeof this.chart.plugin === 'string' && this.chart.plugin !== '') {
str = this.chart.plugin;
if (str.endsWith(".plugin")) {
str = str.substring(0, str.length - 7);
}
if (typeof this.chart.module === 'string' && this.chart.module !== '') {
str += ':' + this.chart.module;
}
if (withContext && context !== '') {
str += ', ' + context;
}
}
else if (withContext && context !== '') {
str = context;
}
}
return str;
};
this.legendResolutionTooltip = function () {
if (!this.chart) {
return '';
}
let collected = this.chart.update_every;
let viewed = (this.data) ? this.data.view_update_every : collected;
if (collected === viewed) {
return "resolution " + NETDATA.seconds4human(collected);
}
return "resolution " + NETDATA.seconds4human(viewed) + ", collected every " + NETDATA.seconds4human(collected);
};
this.legendUpdateDOM = function () {
let needed = false, dim, keys, len;
// check that the legend DOM is up to date for the downloaded dimensions
if (typeof this.element_legend_childs.series !== 'object' || this.element_legend_childs.series === null) {
// this.log('the legend does not have any series - requesting legend update');
needed = true;
} else if (this.data === null) {
// this.log('the chart does not have any data - requesting legend update');
needed = true;
} else if (typeof this.element_legend_childs.series.labels_key === 'undefined') {
needed = true;
} else {
let labels = this.data.dimension_names.toString();
if (labels !== this.element_legend_childs.series.labels_key) {
needed = true;
if (this.debug) {
this.log('NEW LABELS: "' + labels + '" NOT EQUAL OLD LABELS: "' + this.element_legend_childs.series.labels_key + '"');
}
}
}
if (!needed) {
// make sure colors available
this.chartPrepareColorPalette();
// do we have to update the current values?
// we do this, only when the visible chart is current
if (Math.abs(this.netdata_last - this.view_before) <= this.data_update_every) {
if (this.debug) {
this.log('chart is in latest position... updating values on legend...');
}
//let labels = this.data.dimension_names;
//let i = labels.length;
//while (i--)
// this.legendSetLabelValue(labels[i], this.data.view_latest_values[i]);
}
return;
}
if (this.colors === null) {
// this is the first time we update the chart
// let's assign colors to all dimensions
if (this.library.track_colors()) {
this.colors = [];
keys = Object.keys(this.chart.dimensions);
len = keys.length;
for (let i = 0; i < len; i++) {
NETDATA.commonColors.get(this, this.chart.dimensions[keys[i]].name);
}
}
}
// we will re-generate the colors for the chart
// based on the dimensions this result has data for
this.colors = [];
if (this.debug) {
this.log('updating Legend DOM');
}
// mark all dimensions as invalid
this.dimensions_visibility.invalidateAll();
const genLabel = function (state, parent, dim, name, count) {
let color = state.__chartDimensionColor(name);
let user_element = null;
let user_id = NETDATA.dataAttribute(state.element, 'show-value-of-' + name.toLowerCase() + '-at', null);
if (user_id === null) {
user_id = NETDATA.dataAttribute(state.element, 'show-value-of-' + dim.toLowerCase() + '-at', null);
}
if (user_id !== null) {
user_element = document.getElementById(user_id) || null;
if (user_element === null) {
state.log('Cannot find element with id: ' + user_id);
}
}
state.element_legend_childs.series[name] = {
name: document.createElement('span'),
value: document.createElement('span'),
user: user_element,
last: null,
last_shown_value: null
};
let label = state.element_legend_childs.series[name];
// create the dimension visibility tracking for this label
state.dimensions_visibility.dimensionAdd(name, label.name, label.value, color);
let rgb = NETDATA.colorHex2Rgb(color);
label.name.innerHTML = '<table class="netdata-legend-name-table-'
+ state.chart.chart_type
+ '" style="background-color: '
+ 'rgba(' + rgb.r + ',' + rgb.g + ',' + rgb.b + ',' + NETDATA.options.current['color_fill_opacity_' + state.chart.chart_type] + ') !important'
+ '"><tr class="netdata-legend-name-tr"><td class="netdata-legend-name-td"></td></tr></table>';
let text = document.createTextNode(' ' + name);
label.name.appendChild(text);
if (count > 0) {
parent.appendChild(document.createElement('br'));
}
parent.appendChild(label.name);
parent.appendChild(label.value);
};
let content = document.createElement('div');
if (this.element_chart === null) {
this.element_chart = document.createElement('div');
this.element_chart.id = this.library_name + '-' + this.uuid + '-chart';
this.element.appendChild(this.element_chart);
if (this.hasLegend()) {
this.element_chart.className = 'netdata-chart-with-legend-right netdata-' + this.library_name + '-chart-with-legend-right';
} else {
this.element_chart.className = ' netdata-chart netdata-' + this.library_name + '-chart';
}
}
if (this.hasLegend()) {
if (this.element_legend === null) {
this.element_legend = document.createElement('div');
this.element_legend.className = 'netdata-chart-legend netdata-' + this.library_name + '-legend';
this.element.appendChild(this.element_legend);
} else {
this.element_legend.innerHTML = '';
}
this.element_legend_childs = {
content: content,
resize_handler: null,
toolbox: null,
toolbox_left: null,
toolbox_right: null,
toolbox_reset: null,
toolbox_zoomin: null,
toolbox_zoomout: null,
toolbox_volume: null,
title_date: document.createElement('span'),
title_time: document.createElement('span'),
title_units: document.createElement('span'),
perfect_scroller: document.createElement('div'),
series: {}
};
if (NETDATA.options.current.legend_toolbox && this.library.toolboxPanAndZoom !== null) {
this.element_legend_childs.toolbox = document.createElement('div');
this.element_legend_childs.toolbox_left = document.createElement('div');
this.element_legend_childs.toolbox_right = document.createElement('div');
this.element_legend_childs.toolbox_reset = document.createElement('div');
this.element_legend_childs.toolbox_zoomin = document.createElement('div');
this.element_legend_childs.toolbox_zoomout = document.createElement('div');
this.element_legend_childs.toolbox_volume = document.createElement('div');
const getPanAndZoomStep = function (event) {
if (event.ctrlKey) {
return NETDATA.options.current.pan_and_zoom_factor * NETDATA.options.current.pan_and_zoom_factor_multiplier_control;
} else if (event.shiftKey) {
return NETDATA.options.current.pan_and_zoom_factor * NETDATA.options.current.pan_and_zoom_factor_multiplier_shift;
} else if (event.altKey) {
return NETDATA.options.current.pan_and_zoom_factor * NETDATA.options.current.pan_and_zoom_factor_multiplier_alt;
} else {
return NETDATA.options.current.pan_and_zoom_factor;
}
};
this.element_legend_childs.toolbox.className += ' netdata-legend-toolbox';
this.element.appendChild(this.element_legend_childs.toolbox);
this.element_legend_childs.toolbox_left.className += ' netdata-legend-toolbox-button';
this.element_legend_childs.toolbox_left.innerHTML = NETDATA.icons.left;
this.element_legend_childs.toolbox.appendChild(this.element_legend_childs.toolbox_left);
this.element_legend_childs.toolbox_left.onclick = function (e) {
e.preventDefault();
let step = (that.view_before - that.view_after) * getPanAndZoomStep(e);
let before = that.view_before - step;
let after = that.view_after - step;
if (after >= that.netdata_first) {
that.library.toolboxPanAndZoom(that, after, before);
}
};
if (NETDATA.options.current.show_help) {
$(this.element_legend_childs.toolbox_left).popover({
container: "body",
animation: false,
html: true,
trigger: 'hover',
placement: 'bottom',
delay: {
show: NETDATA.options.current.show_help_delay_show_ms,
hide: NETDATA.options.current.show_help_delay_hide_ms
},
title: 'Pan Left',
content: 'Pan the chart to the left. You can also <b>drag it</b> with your mouse or your finger (on touch devices).<br/><small>Help can be disabled from the settings.</small>'
});
}
this.element_legend_childs.toolbox_reset.className += ' netdata-legend-toolbox-button';
this.element_legend_childs.toolbox_reset.innerHTML = NETDATA.icons.reset;
this.element_legend_childs.toolbox.appendChild(this.element_legend_childs.toolbox_reset);
this.element_legend_childs.toolbox_reset.onclick = function (e) {
e.preventDefault();
NETDATA.resetAllCharts(that);
};
if (NETDATA.options.current.show_help) {
$(this.element_legend_childs.toolbox_reset).popover({
container: "body",
animation: false,
html: true,
trigger: 'hover',
placement: 'bottom',
delay: {
show: NETDATA.options.current.show_help_delay_show_ms,
hide: NETDATA.options.current.show_help_delay_hide_ms
},
title: 'Chart Reset',
content: 'Reset all the charts to their default auto-refreshing state. You can also <b>double click</b> the chart contents with your mouse or your finger (on touch devices).<br/><small>Help can be disabled from the settings.</small>'
});
}
this.element_legend_childs.toolbox_right.className += ' netdata-legend-toolbox-button';
this.element_legend_childs.toolbox_right.innerHTML = NETDATA.icons.right;
this.element_legend_childs.toolbox.appendChild(this.element_legend_childs.toolbox_right);
this.element_legend_childs.toolbox_right.onclick = function (e) {
e.preventDefault();
let step = (that.view_before - that.view_after) * getPanAndZoomStep(e);
let before = that.view_before + step;
let after = that.view_after + step;
if (before <= that.netdata_last) {
that.library.toolboxPanAndZoom(that, after, before);
}
};
if (NETDATA.options.current.show_help) {
$(this.element_legend_childs.toolbox_right).popover({
container: "body",
animation: false,
html: true,
trigger: 'hover',
placement: 'bottom',
delay: {
show: NETDATA.options.current.show_help_delay_show_ms,
hide: NETDATA.options.current.show_help_delay_hide_ms
},
title: 'Pan Right',
content: 'Pan the chart to the right. You can also <b>drag it</b> with your mouse or your finger (on touch devices).<br/><small>Help, can be disabled from the settings.</small>'
});
}
this.element_legend_childs.toolbox_zoomin.className += ' netdata-legend-toolbox-button';
this.element_legend_childs.toolbox_zoomin.innerHTML = NETDATA.icons.zoomIn;
this.element_legend_childs.toolbox.appendChild(this.element_legend_childs.toolbox_zoomin);
this.element_legend_childs.toolbox_zoomin.onclick = function (e) {
e.preventDefault();
let dt = ((that.view_before - that.view_after) * (getPanAndZoomStep(e) * 0.8) / 2);
let before = that.view_before - dt;
let after = that.view_after + dt;
that.library.toolboxPanAndZoom(that, after, before);
};
if (NETDATA.options.current.show_help) {
$(this.element_legend_childs.toolbox_zoomin).popover({
container: "body",
animation: false,
html: true,
trigger: 'hover',
placement: 'bottom',
delay: {
show: NETDATA.options.current.show_help_delay_show_ms,
hide: NETDATA.options.current.show_help_delay_hide_ms
},
title: 'Chart Zoom In',
content: 'Zoom in the chart. You can also press SHIFT and select an area of the chart, or press SHIFT or ALT and use the mouse wheel or 2-finger touchpad scroll to zoom in or out.<br/><small>Help, can be disabled from the settings.</small>'
});
}
this.element_legend_childs.toolbox_zoomout.className += ' netdata-legend-toolbox-button';
this.element_legend_childs.toolbox_zoomout.innerHTML = NETDATA.icons.zoomOut;
this.element_legend_childs.toolbox.appendChild(this.element_legend_childs.toolbox_zoomout);
this.element_legend_childs.toolbox_zoomout.onclick = function (e) {
e.preventDefault();
let dt = (((that.view_before - that.view_after) / (1.0 - (getPanAndZoomStep(e) * 0.8)) - (that.view_before - that.view_after)) / 2);
let before = that.view_before + dt;
let after = that.view_after - dt;
that.library.toolboxPanAndZoom(that, after, before);
};
if (NETDATA.options.current.show_help) {
$(this.element_legend_childs.toolbox_zoomout).popover({
container: "body",
animation: false,
html: true,
trigger: 'hover',
placement: 'bottom',
delay: {
show: NETDATA.options.current.show_help_delay_show_ms,
hide: NETDATA.options.current.show_help_delay_hide_ms
},
title: 'Chart Zoom Out',
content: 'Zoom out the chart. You can also press SHIFT or ALT and use the mouse wheel, or 2-finger touchpad scroll to zoom in or out.<br/><small>Help, can be disabled from the settings.</small>'
});
}
//this.element_legend_childs.toolbox_volume.className += ' netdata-legend-toolbox-button';
//this.element_legend_childs.toolbox_volume.innerHTML = '<i class="fas fa-sort-amount-down"></i>';
//this.element_legend_childs.toolbox_volume.title = 'Visible Volume';
//this.element_legend_childs.toolbox.appendChild(this.element_legend_childs.toolbox_volume);
//this.element_legend_childs.toolbox_volume.onclick = function(e) {
//e.preventDefault();
//alert('clicked toolbox_volume on ' + that.id);
//}
}
if (NETDATA.options.current.resize_charts) {
this.element_legend_childs.resize_handler = document.createElement('div');
this.element_legend_childs.resize_handler.className += " netdata-legend-resize-handler";
this.element_legend_childs.resize_handler.innerHTML = NETDATA.icons.resize;
this.element.appendChild(this.element_legend_childs.resize_handler);
if (NETDATA.options.current.show_help) {
$(this.element_legend_childs.resize_handler).popover({
container: "body",
animation: false,
html: true,
trigger: 'hover',
placement: 'bottom',
delay: {
show: NETDATA.options.current.show_help_delay_show_ms,
hide: NETDATA.options.current.show_help_delay_hide_ms
},
title: 'Chart Resize',
content: 'Drag this point with your mouse or your finger (on touch devices), to resize the chart vertically. You can also <b>double click it</b> or <b>double tap it</b> to reset between 2 states: the default and the one that fits all the values.<br/><small>Help, can be disabled from the settings.</small>'
});
}
// mousedown event
this.element_legend_childs.resize_handler.onmousedown =
function (e) {
that.resizeHandler(e);
};
// touchstart event
this.element_legend_childs.resize_handler.addEventListener('touchstart', function (e) {
that.resizeHandler(e);
}, false);
}
if (this.chart) {
this.element_legend_childs.title_date.title = this.legendPluginModuleString(true);
this.element_legend_childs.title_time.title = this.legendResolutionTooltip();
}
this.element_legend_childs.title_date.className += " netdata-legend-title-date";
this.element_legend.appendChild(this.element_legend_childs.title_date);
this.tmp.__last_shown_legend_date = undefined;
this.element_legend.appendChild(document.createElement('br'));
this.element_legend_childs.title_time.className += " netdata-legend-title-time";
this.element_legend.appendChild(this.element_legend_childs.title_time);
this.tmp.__last_shown_legend_time = undefined;
this.element_legend.appendChild(document.createElement('br'));
this.element_legend_childs.title_units.className += " netdata-legend-title-units";
this.element_legend_childs.title_units.innerText = this.units_current;
this.element_legend.appendChild(this.element_legend_childs.title_units);
this.tmp.__last_shown_legend_units = undefined;
this.element_legend.appendChild(document.createElement('br'));
this.element_legend_childs.perfect_scroller.className = 'netdata-legend-series';
this.element_legend.appendChild(this.element_legend_childs.perfect_scroller);
content.className = 'netdata-legend-series-content';
this.element_legend_childs.perfect_scroller.appendChild(content);
this.element_legend_childs.content = content;
if (NETDATA.options.current.show_help) {
$(content).popover({
container: "body",
animation: false,
html: true,
trigger: 'hover',
placement: 'bottom',
title: 'Chart Legend',
delay: {
show: NETDATA.options.current.show_help_delay_show_ms,
hide: NETDATA.options.current.show_help_delay_hide_ms
},
content: 'You can click or tap on the values or the labels to select dimensions. By pressing SHIFT or CONTROL, you can enable or disable multiple dimensions.<br/><small>Help, can be disabled from the settings.</small>'
});
}
} else {
this.element_legend_childs = {
content: content,
resize_handler: null,
toolbox: null,
toolbox_left: null,
toolbox_right: null,
toolbox_reset: null,
toolbox_zoomin: null,
toolbox_zoomout: null,
toolbox_volume: null,
title_date: null,
title_time: null,
title_units: null,
perfect_scroller: null,
series: {}
};
}
if (this.data) {
this.element_legend_childs.series.labels_key = this.data.dimension_names.toString();
if (this.debug) {
this.log('labels from data: "' + this.element_legend_childs.series.labels_key + '"');
}
for (let i = 0, len = this.data.dimension_names.length; i < len; i++) {
genLabel(this, content, this.data.dimension_ids[i], this.data.dimension_names[i], i);
}
} else {
let tmp = [];
keys = Object.keys(this.chart.dimensions);
for (let i = 0, len = keys.length; i < len; i++) {
dim = keys[i];
tmp.push(this.chart.dimensions[dim].name);
genLabel(this, content, dim, this.chart.dimensions[dim].name, i);
}
this.element_legend_childs.series.labels_key = tmp.toString();
if (this.debug) {
this.log('labels from chart: "' + this.element_legend_childs.series.labels_key + '"');
}
}
// create a hidden div to be used for hidding
// the original legend of the chart library
let el = document.createElement('div');
if (this.element_legend !== null) {
this.element_legend.appendChild(el);
}
el.style.display = 'none';
this.element_legend_childs.hidden = document.createElement('div');
el.appendChild(this.element_legend_childs.hidden);
if (this.element_legend_childs.perfect_scroller !== null) {
Ps.initialize(this.element_legend_childs.perfect_scroller, {
wheelSpeed: 0.2,
wheelPropagation: true,
swipePropagation: true,
minScrollbarLength: null,
maxScrollbarLength: null,
useBothWheelAxes: false,
suppressScrollX: true,
suppressScrollY: false,
scrollXMarginOffset: 0,
scrollYMarginOffset: 0,
theme: 'default'
});
Ps.update(this.element_legend_childs.perfect_scroller);
}
this.legendShowLatestValues();
};
this.hasLegend = function () {
if (typeof this.tmp.___hasLegendCache___ !== 'undefined') {
return this.tmp.___hasLegendCache___;
}
let leg = false;
if (this.library && this.library.legend(this) === 'right-side') {
leg = true;
}
this.tmp.___hasLegendCache___ = leg;
return leg;
};
this.legendWidth = function () {
return (this.hasLegend()) ? 140 : 0;
};
this.legendHeight = function () {
return $(this.element).height();
};
this.chartWidth = function () {
return $(this.element).width() - this.legendWidth();
};
this.chartHeight = function () {
return $(this.element).height();
};
this.chartPixelsPerPoint = function () {
// force an options provided detail
let px = this.pixels_per_point;
if (this.library && px < this.library.pixels_per_point(this)) {
px = this.library.pixels_per_point(this);
}
if (px < NETDATA.options.current.pixels_per_point) {
px = NETDATA.options.current.pixels_per_point;
}
return px;
};
this.needsRecreation = function () {
let ret = (
this.chart_created &&
this.library &&
this.library.autoresize() === false &&
this.tm.last_resized < NETDATA.options.last_page_resize
);
if (this.debug) {
this.log('needsRecreation(): ' + ret.toString() + ', chart_created = ' + this.chart_created.toString());
}
return ret;
};
this.chartDataUniqueID = function () {
return this.id + ',' + this.library_name + ',' + this.dimensions + ',' + this.chartURLOptions();
};
this.chartURLOptions = function () {
let ret = '';
if (this.override_options !== null) {
ret = this.override_options.toString();
} else {
ret = this.library.options(this);
}
if (this.append_options !== null) {
ret += '%7C' + this.append_options.toString();
}
ret += '%7C' + 'jsonwrap';
if (NETDATA.options.current.eliminate_zero_dimensions) {
ret += '%7C' + 'nonzero';
}
return ret;
};
this.chartURL = function () {
let after, before, points_multiplier = 1;
if (NETDATA.globalPanAndZoom.isActive()) {
if (this.current.force_before_ms !== null && this.current.force_after_ms !== null) {
this.tm.pan_and_zoom_seq = 0;
before = Math.round(this.current.force_before_ms / 1000);
after = Math.round(this.current.force_after_ms / 1000);
this.view_after = after * 1000;
this.view_before = before * 1000;
if (NETDATA.options.current.pan_and_zoom_data_padding) {
this.requested_padding = Math.round((before - after) / 2);
after -= this.requested_padding;
before += this.requested_padding;
this.requested_padding *= 1000;
points_multiplier = 2;
}
this.current.force_before_ms = null;
this.current.force_after_ms = null;
} else {
this.tm.pan_and_zoom_seq = NETDATA.globalPanAndZoom.seq;
after = Math.round(NETDATA.globalPanAndZoom.force_after_ms / 1000);
before = Math.round(NETDATA.globalPanAndZoom.force_before_ms / 1000);
this.view_after = after * 1000;
this.view_before = before * 1000;
this.requested_padding = null;
points_multiplier = 1;
}
} else {
this.tm.pan_and_zoom_seq = 0;
before = this.before;
after = this.after;
this.view_after = after * 1000;
this.view_before = before * 1000;
this.requested_padding = null;
points_multiplier = 1;
}
this.requested_after = after * 1000;
this.requested_before = before * 1000;
let data_points;
if (NETDATA.options.force_data_points !== 0) {
data_points = NETDATA.options.force_data_points;
this.data_points = data_points;
} else {
this.data_points = this.points || Math.round(this.chartWidth() / this.chartPixelsPerPoint());
data_points = this.data_points * points_multiplier;
}
// build the data URL
this.data_url = this.host + this.chart.data_url;
this.data_url += "&format=" + this.library.format();
this.data_url += "&points=" + (data_points).toString();
this.data_url += "&group=" + this.method;
this.data_url += "&gtime=" + this.gtime;
this.data_url += "&options=" + this.chartURLOptions();
if (after) {
this.data_url += "&after=" + after.toString();
}
if (before) {
this.data_url += "&before=" + before.toString();
}
if (this.dimensions) {
this.data_url += "&dimensions=" + this.dimensions;
}
if (NETDATA.options.debug.chart_data_url || this.debug) {
this.log('chartURL(): ' + this.data_url + ' WxH:' + this.chartWidth() + 'x' + this.chartHeight() + ' points: ' + data_points.toString() + ' library: ' + this.library_name);
}
};
this.redrawChart = function () {
if (this.data !== null) {
this.updateChartWithData(this.data);
}
};
this.updateChartWithData = function (data) {
if (this.debug) {
this.log('updateChartWithData() called.');
}
// this may force the chart to be re-created
resizeChart();
this.data = data;
let started = Date.now();
let view_update_every = data.view_update_every * 1000;
if (this.data_update_every !== view_update_every) {
if (this.element_legend_childs.title_time) {
this.element_legend_childs.title_time.title = this.legendResolutionTooltip();
}
}
// if the result is JSON, find the latest update-every
this.data_update_every = view_update_every;
this.data_after = data.after * 1000;
this.data_before = data.before * 1000;
this.netdata_first = data.first_entry * 1000;
this.netdata_last = data.last_entry * 1000;
this.data_points = data.points;
data.state = this;
if (NETDATA.options.current.pan_and_zoom_data_padding && this.requested_padding !== null) {
if (this.view_after < this.data_after) {
// console.log('adjusting view_after from ' + this.view_after + ' to ' + this.data_after);
this.view_after = this.data_after;
}
if (this.view_before > this.data_before) {
// console.log('adjusting view_before from ' + this.view_before + ' to ' + this.data_before);
this.view_before = this.data_before;
}
} else {
this.view_after = this.data_after;
this.view_before = this.data_before;
}
if (this.debug) {
this.log('UPDATE No ' + this.updates_counter + ' COMPLETED');
if (this.current.force_after_ms) {
this.log('STATUS: forced : ' + (this.current.force_after_ms / 1000).toString() + ' - ' + (this.current.force_before_ms / 1000).toString());
} else {
this.log('STATUS: forced : unset');
}
this.log('STATUS: requested : ' + (this.requested_after / 1000).toString() + ' - ' + (this.requested_before / 1000).toString());
this.log('STATUS: downloaded: ' + (this.data_after / 1000).toString() + ' - ' + (this.data_before / 1000).toString());
this.log('STATUS: rendered : ' + (this.view_after / 1000).toString() + ' - ' + (this.view_before / 1000).toString());
this.log('STATUS: points : ' + (this.data_points).toString());
}
if (this.data_points === 0) {
noDataToShow();
return;
}
if (this.updates_since_last_creation >= this.library.max_updates_to_recreate()) {
if (this.debug) {
this.log('max updates of ' + this.updates_since_last_creation.toString() + ' reached. Forcing re-generation.');
}
init('force');
return;
}
// check and update the legend
this.legendUpdateDOM();
if (this.chart_created && typeof this.library.update === 'function') {
if (this.debug) {
this.log('updating chart...');
}
if (!callChartLibraryUpdateSafely(data)) {
return;
}
} else {
if (this.debug) {
this.log('creating chart...');
}
if (!callChartLibraryCreateSafely(data)) {
return;
}
}
if (this.isVisible()) {
hideMessage();
this.legendShowLatestValues();
} else {
this.__redraw_on_unhide = true;
if (this.debug) {
this.log("drawn while not visible");
}
}
if (this.selected) {
NETDATA.globalSelectionSync.stop();
}
// update the performance counters
let now = Date.now();
this.tm.last_updated = now;
// don't update last_autorefreshed if this chart is
// forced to be updated with global PanAndZoom
if (NETDATA.globalPanAndZoom.isActive()) {
this.tm.last_autorefreshed = 0;
} else {
if (NETDATA.options.current.parallel_refresher && NETDATA.options.current.concurrent_refreshes && typeof this.force_update_every !== 'number') {
this.tm.last_autorefreshed = now - (now % this.data_update_every);
} else {
this.tm.last_autorefreshed = now;
}
}
this.refresh_dt_ms = now - started;
NETDATA.options.auto_refresher_fast_weight += this.refresh_dt_ms;
if (this.refresh_dt_element !== null) {
this.refresh_dt_element.innerText = this.refresh_dt_ms.toString();
}
if (this.foreignElementBefore !== null) {
this.foreignElementBefore.innerText = NETDATA.dateTime.localeDateString(this.view_before) + ' ' + NETDATA.dateTime.localeTimeString(this.view_before);
}
if (this.foreignElementAfter !== null) {
this.foreignElementAfter.innerText = NETDATA.dateTime.localeDateString(this.view_after) + ' ' + NETDATA.dateTime.localeTimeString(this.view_after);
}
if (this.foreignElementDuration !== null) {
this.foreignElementDuration.innerText = NETDATA.seconds4human(Math.floor((this.view_before - this.view_after) / 1000) + 1);
}
if (this.foreignElementUpdateEvery !== null) {
this.foreignElementUpdateEvery.innerText = NETDATA.seconds4human(Math.floor(this.data_update_every / 1000));
}
};
this.getSnapshotData = function (key) {
if (this.debug) {
this.log('updating from snapshot: ' + key);
}
if (typeof netdataSnapshotData.data[key] === 'undefined') {
this.log('snapshot does not include data for key "' + key + '"');
return null;
}
if (typeof netdataSnapshotData.data[key] !== 'string') {
this.log('snapshot data for key "' + key + '" is not string');
return null;
}
let uncompressed;
try {
uncompressed = netdataSnapshotData.uncompress(netdataSnapshotData.data[key]);
if (uncompressed === null) {
this.log('uncompressed snapshot data for key ' + key + ' is null');
return null;
}
if (typeof uncompressed === 'undefined') {
this.log('uncompressed snapshot data for key ' + key + ' is undefined');
return null;
}
} catch (e) {
this.log('decompression of snapshot data for key ' + key + ' failed');
console.log(e);
uncompressed = null;
}
if (typeof uncompressed !== 'string') {
this.log('uncompressed snapshot data for key ' + key + ' is not string');
return null;
}
let data;
try {
data = JSON.parse(uncompressed);
} catch (e) {
this.log('parsing snapshot data for key ' + key + ' failed');
console.log(e);
data = null;
}
return data;
};
this.updateChart = function (callback) {
if (this.debug) {
this.log('updateChart()');
}
if (this.fetching_data) {
if (this.debug) {
this.log('updateChart(): I am already updating...');
}
if (typeof callback === 'function') {
return callback(false, 'already running');
}
return;
}
// due to late initialization of charts and libraries
// we need to check this too
if (!this.enabled) {
if (this.debug) {
this.log('updateChart(): I am not enabled');
}
if (typeof callback === 'function') {
return callback(false, 'not enabled');
}
return;
}
if (!canBeRendered()) {
if (this.debug) {
this.log('updateChart(): cannot be rendered');
}
if (typeof callback === 'function') {
return callback(false, 'cannot be rendered');
}
return;
}
if (that.dom_created !== true) {
if (this.debug) {
this.log('updateChart(): creating DOM');
}
createDOM();
}
if (this.chart === null) {
if (this.debug) {
this.log('updateChart(): getting chart');
}
return this.getChart(function () {
return that.updateChart(callback);
});
}
if (!this.library.initialized) {
if (this.library.enabled) {
if (this.debug) {
this.log('updateChart(): initializing chart library');
}
return this.library.initialize(function () {
return that.updateChart(callback);
});
} else {
error('chart library "' + this.library_name + '" is not available.');
if (typeof callback === 'function') {
return callback(false, 'library not available');
}
return;
}
}
this.clearSelection();
this.chartURL();
NETDATA.statistics.refreshes_total++;
NETDATA.statistics.refreshes_active++;
if (NETDATA.statistics.refreshes_active > NETDATA.statistics.refreshes_active_max) {
NETDATA.statistics.refreshes_active_max = NETDATA.statistics.refreshes_active;
}
let ok = false;
this.fetching_data = true;
if (netdataSnapshotData !== null) {
let key = this.chartDataUniqueID();
let data = this.getSnapshotData(key);
if (data !== null) {
ok = true;
data = NETDATA.xss.checkData('/api/v1/data', data, this.library.xssRegexIgnore);
this.updateChartWithData(data);
} else {
ok = false;
error('cannot get data from snapshot for key: "' + key + '"');
that.tm.last_autorefreshed = Date.now();
}
NETDATA.statistics.refreshes_active--;
this.fetching_data = false;
if (typeof callback === 'function') {
callback(ok, 'snapshot');
}
return;
}
if (this.debug) {
this.log('updating from ' + this.data_url);
}
this.xhr = $.ajax({
url: this.data_url,
cache: false,
async: true,
headers: {
'Cache-Control': 'no-cache, no-store',
'Pragma': 'no-cache'
},
xhrFields: {withCredentials: true} // required for the cookie
})
.done(function (data) {
data = NETDATA.xss.checkData('/api/v1/data', data, that.library.xssRegexIgnore);
that.xhr = undefined;
that.retries_on_data_failures = 0;
ok = true;
if (that.debug) {
that.log('data received. updating chart.');
}
that.updateChartWithData(data);
})
.fail(function (msg) {
that.xhr = undefined;
if (msg.statusText !== 'abort') {
that.retries_on_data_failures++;
if (that.retries_on_data_failures > NETDATA.options.current.retries_on_data_failures) {
// that.log('failed ' + that.retries_on_data_failures.toString() + ' times - giving up');
that.retries_on_data_failures = 0;
error('data download failed for url: ' + that.data_url);
}
else {
that.tm.last_autorefreshed = Date.now();
// that.log('failed ' + that.retries_on_data_failures.toString() + ' times, but I will retry');
}
}
})
.always(function () {
that.xhr = undefined;
NETDATA.statistics.refreshes_active--;
that.fetching_data = false;
if (typeof callback === 'function') {
return callback(ok, 'download');
}
});
};
const __isVisible = function () {
let ret = true;
if (NETDATA.options.current.update_only_visible !== false) {
// tolerance is the number of pixels a chart can be off-screen
// to consider it as visible and refresh it as if was visible
let tolerance = 0;
that.tm.last_visible_check = Date.now();
let rect = that.element.getBoundingClientRect();
let screenTop = window.scrollY;
let screenBottom = screenTop + window.innerHeight;
let chartTop = rect.top + screenTop;
let chartBottom = chartTop + rect.height;
ret = !(rect.width === 0 || rect.height === 0 || chartBottom + tolerance < screenTop || chartTop - tolerance > screenBottom);
}
if (that.debug) {
that.log('__isVisible(): ' + ret);
}
return ret;
};
this.isVisible = function (nocache) {
// this.log('last_visible_check: ' + this.tm.last_visible_check + ', last_page_scroll: ' + NETDATA.options.last_page_scroll);
// caching - we do not evaluate the charts visibility
// if the page has not been scrolled since the last check
if ((typeof nocache !== 'undefined' && nocache)
|| typeof this.tmp.___isVisible___ === 'undefined'
|| this.tm.last_visible_check <= NETDATA.options.last_page_scroll) {
this.tmp.___isVisible___ = __isVisible();
if (this.tmp.___isVisible___) {
this.unhideChart();
} else {
this.hideChart();
}
}
if (this.debug) {
this.log('isVisible(' + nocache + '): ' + this.tmp.___isVisible___);
}
return this.tmp.___isVisible___;
};
this.isAutoRefreshable = function () {
return (this.current.autorefresh);
};
this.canBeAutoRefreshed = function () {
if (!this.enabled) {
if (this.debug) {
this.log('canBeAutoRefreshed() -> not enabled');
}
return false;
}
if (this.running) {
if (this.debug) {
this.log('canBeAutoRefreshed() -> already running');
}
return false;
}
if (this.library === null || this.library.enabled === false) {
error('charting library "' + this.library_name + '" is not available');
if (this.debug) {
this.log('canBeAutoRefreshed() -> chart library ' + this.library_name + ' is not available');
}
return false;
}
if (!this.isVisible()) {
if (NETDATA.options.debug.visibility || this.debug) {
this.log('canBeAutoRefreshed() -> not visible');
}
return false;
}
let now = Date.now();
if (this.current.force_update_at !== 0 && this.current.force_update_at < now) {
if (this.debug) {
this.log('canBeAutoRefreshed() -> timed force update - allowing this update');
}
this.current.force_update_at = 0;
return true;
}
if (!this.isAutoRefreshable()) {
if (this.debug) {
this.log('canBeAutoRefreshed() -> not auto-refreshable');
}
return false;
}
// allow the first update, even if the page is not visible
if (NETDATA.options.page_is_visible === false && this.updates_counter && this.updates_since_last_unhide) {
if (NETDATA.options.debug.focus || this.debug) {
this.log('canBeAutoRefreshed() -> not the first update, and page does not have focus');
}
return false;
}
if (this.needsRecreation()) {
if (this.debug) {
this.log('canBeAutoRefreshed() -> needs re-creation.');
}
return true;
}
if (NETDATA.options.auto_refresher_stop_until >= now) {
if (this.debug) {
this.log('canBeAutoRefreshed() -> stopped until is in future.');
}
return false;
}
// options valid only for autoRefresh()
if (NETDATA.globalPanAndZoom.isActive()) {
if (NETDATA.globalPanAndZoom.shouldBeAutoRefreshed(this)) {
if (this.debug) {
this.log('canBeAutoRefreshed(): global panning: I need an update.');
}
return true;
}
else {
if (this.debug) {
this.log('canBeAutoRefreshed(): global panning: I am already up to date.');
}
return false;
}
}
if (this.selected) {
if (this.debug) {
this.log('canBeAutoRefreshed(): I have a selection in place.');
}
return false;
}
if (this.paused) {
if (this.debug) {
this.log('canBeAutoRefreshed(): I am paused.');
}
return false;
}
let data_update_every = this.data_update_every;
if (typeof this.force_update_every === 'number') {
data_update_every = this.force_update_every;
}
if (now - this.tm.last_autorefreshed >= data_update_every) {
if (this.debug) {
this.log('canBeAutoRefreshed(): It is time to update me. Now: ' + now.toString() + ', last_autorefreshed: ' + this.tm.last_autorefreshed + ', data_update_every: ' + data_update_every + ', delta: ' + (now - this.tm.last_autorefreshed).toString());
}
return true;
}
return false;
};
this.autoRefresh = function (callback) {
let state = that;
if (state.canBeAutoRefreshed() && state.running === false) {
state.running = true;
state.updateChart(function () {
state.running = false;
if (typeof callback === 'function') {
return callback();
}
});
} else {
if (typeof callback === 'function') {
return callback();
}
}
};
this.__defaultsFromDownloadedChart = function (chart) {
this.chart = chart;
this.chart_url = chart.url;
this.data_update_every = chart.update_every * 1000;
this.data_points = Math.round(this.chartWidth() / this.chartPixelsPerPoint());
this.tm.last_info_downloaded = Date.now();
if (this.title === null) {
this.title = chart.title;
}
if (this.units === null) {
this.units = chart.units;
this.units_current = this.units;
}
};
// fetch the chart description from the netdata server
this.getChart = function (callback) {
this.chart = NETDATA.chartRegistry.get(this.host, this.id);
if (this.chart) {
this.__defaultsFromDownloadedChart(this.chart);
if (typeof callback === 'function') {
return callback();
}
} else if (netdataSnapshotData !== null) {
// console.log(this);
// console.log(NETDATA.chartRegistry);
NETDATA.error(404, 'host: ' + this.host + ', chart: ' + this.id);
error('chart not found in snapshot');
if (typeof callback === 'function') {
return callback();
}
} else {
this.chart_url = "/api/v1/chart?chart=" + this.id;
if (this.debug) {
this.log('downloading ' + this.chart_url);
}
$.ajax({
url: this.host + this.chart_url,
cache: false,
async: true,
xhrFields: {withCredentials: true} // required for the cookie
})
.done(function (chart) {
chart = NETDATA.xss.checkOptional('/api/v1/chart', chart);
chart.url = that.chart_url;
that.__defaultsFromDownloadedChart(chart);
NETDATA.chartRegistry.add(that.host, that.id, chart);
})
.fail(function () {
NETDATA.error(404, that.chart_url);
error('chart not found on url "' + that.chart_url + '"');
})
.always(function () {
if (typeof callback === 'function') {
return callback();
}
});
}
};
// ============================================================================================================
// INITIALIZATION
initDOM();
init('fast');
};
NETDATA.resetAllCharts = function (state) {
// first clear the global selection sync
// to make sure no chart is in selected state
NETDATA.globalSelectionSync.stop();
// there are 2 possibilities here
// a. state is the global Pan and Zoom master
// b. state is not the global Pan and Zoom master
// let master = true;
// if (NETDATA.globalPanAndZoom.isMaster(state) === false) {
// master = false;
// }
const master = NETDATA.globalPanAndZoom.isMaster(state);
// clear the global Pan and Zoom
// this will also refresh the master
// and unblock any charts currently mirroring the master
NETDATA.globalPanAndZoom.clearMaster();
// if we were not the master, reset our status too
// this is required because most probably the mouse
// is over this chart, blocking it from auto-refreshing
if (master === false && (state.paused || state.selected)) {
state.resetChart();
}
};
// get or create a chart state, given a DOM element
NETDATA.chartState = function (element) {
let self = $(element);
let state = self.data('netdata-state-object') || null;
if (state === null) {
state = new chartState(element);
self.data('netdata-state-object', state);
}
return state;
};
// ----------------------------------------------------------------------------------------------------------------
// Library functions
// Load a script without jquery
// This is used to load jquery - after it is loaded, we use jquery
NETDATA._loadjQuery = function (callback) {
if (typeof jQuery === 'undefined') {
if (NETDATA.options.debug.main_loop) {
console.log('loading ' + NETDATA.jQuery);
}
let script = document.createElement('script');
script.type = 'text/javascript';
script.async = true;
script.src = NETDATA.jQuery;
// script.onabort = onError;
script.onerror = function () {
NETDATA.error(101, NETDATA.jQuery);
};
if (typeof callback === "function") {
script.onload = function () {
$ = jQuery;
return callback();
};
}
let s = document.getElementsByTagName('script')[0];
s.parentNode.insertBefore(script, s);
}
else if (typeof callback === "function") {
$ = jQuery;
return callback();
}
};
NETDATA._loadCSS = function (filename) {
// don't use jQuery here
// styles are loaded before jQuery
// to eliminate showing an unstyled page to the user
let fileref = document.createElement("link");
fileref.setAttribute("rel", "stylesheet");
fileref.setAttribute("type", "text/css");
fileref.setAttribute("href", filename);
if (typeof fileref !== 'undefined') {
document.getElementsByTagName("head")[0].appendChild(fileref);
}
};
// user function to signal us the DOM has been
// updated.
NETDATA.updatedDom = function () {
NETDATA.options.updated_dom = true;
};
NETDATA.ready = function (callback) {
NETDATA.options.pauseCallback = callback;
};
NETDATA.pause = function (callback) {
if (typeof callback === 'function') {
if (NETDATA.options.pause) {
return callback();
} else {
NETDATA.options.pauseCallback = callback;
}
}
};
NETDATA.unpause = function () {
NETDATA.options.pauseCallback = null;
NETDATA.options.updated_dom = true;
NETDATA.options.pause = false;
};
// ----------------------------------------------------------------------------------------------------------------
// this is purely sequential charts refresher
// it is meant to be autonomous
NETDATA.chartRefresherNoParallel = function (index, callback) {
let targets = NETDATA.intersectionObserver.targets();
if (NETDATA.options.debug.main_loop) {
console.log('NETDATA.chartRefresherNoParallel(' + index + ')');
}
if (NETDATA.options.updated_dom) {
// the dom has been updated
// get the dom parts again
NETDATA.parseDom(callback);
return;
}
if (index >= targets.length) {
if (NETDATA.options.debug.main_loop) {
console.log('waiting to restart main loop...');
}
NETDATA.options.auto_refresher_fast_weight = 0;
callback();
} else {
let state = targets[index];
if (NETDATA.options.auto_refresher_fast_weight < NETDATA.options.current.fast_render_timeframe) {
if (NETDATA.options.debug.main_loop) {
console.log('fast rendering...');
}
if (state.isVisible()) {
NETDATA.timeout.set(function () {
state.autoRefresh(function () {
NETDATA.chartRefresherNoParallel(++index, callback);
});
}, 0);
} else {
NETDATA.chartRefresherNoParallel(++index, callback);
}
} else {
if (NETDATA.options.debug.main_loop) {
console.log('waiting for next refresh...');
}
NETDATA.options.auto_refresher_fast_weight = 0;
NETDATA.timeout.set(function () {
state.autoRefresh(function () {
NETDATA.chartRefresherNoParallel(++index, callback);
});
}, NETDATA.options.current.idle_between_charts);
}
}
};
NETDATA.chartRefresherWaitTime = function () {
return NETDATA.options.current.idle_parallel_loops;
};
// the default refresher
NETDATA.chartRefresherLastRun = 0;
NETDATA.chartRefresherRunsAfterParseDom = 0;
NETDATA.chartRefresherTimeoutId = undefined;
NETDATA.chartRefresherReschedule = function () {
if (NETDATA.options.current.async_on_scroll) {
if (NETDATA.chartRefresherTimeoutId) {
NETDATA.timeout.clear(NETDATA.chartRefresherTimeoutId);
}
NETDATA.chartRefresherTimeoutId = NETDATA.timeout.set(NETDATA.chartRefresher, NETDATA.options.current.onscroll_worker_duration_threshold);
//console.log('chartRefresherReschedule()');
}
};
NETDATA.chartRefresher = function () {
// console.log('chartRefresher() begin ' + (Date.now() - NETDATA.chartRefresherLastRun).toString() + ' ms since last run');
if (NETDATA.options.page_is_visible === false
&& NETDATA.options.current.stop_updates_when_focus_is_lost
&& NETDATA.chartRefresherLastRun > NETDATA.options.last_page_resize
&& NETDATA.chartRefresherLastRun > NETDATA.options.last_page_scroll
&& NETDATA.chartRefresherRunsAfterParseDom > 10
) {
setTimeout(
NETDATA.chartRefresher,
NETDATA.options.current.idle_lost_focus
);
// console.log('chartRefresher() page without focus, will run in ' + NETDATA.options.current.idle_lost_focus.toString() + ' ms, ' + NETDATA.chartRefresherRunsAfterParseDom.toString());
return;
}
NETDATA.chartRefresherRunsAfterParseDom++;
let now = Date.now();
NETDATA.chartRefresherLastRun = now;
if (now < NETDATA.options.on_scroll_refresher_stop_until) {
NETDATA.chartRefresherTimeoutId = NETDATA.timeout.set(
NETDATA.chartRefresher,
NETDATA.chartRefresherWaitTime()
);
// console.log('chartRefresher() end1 will run in ' + NETDATA.chartRefresherWaitTime().toString() + ' ms');
return;
}
if (now < NETDATA.options.auto_refresher_stop_until) {
NETDATA.chartRefresherTimeoutId = NETDATA.timeout.set(
NETDATA.chartRefresher,
NETDATA.chartRefresherWaitTime()
);
// console.log('chartRefresher() end2 will run in ' + NETDATA.chartRefresherWaitTime().toString() + ' ms');
return;
}
if (NETDATA.options.pause) {
// console.log('auto-refresher is paused');
NETDATA.chartRefresherTimeoutId = NETDATA.timeout.set(
NETDATA.chartRefresher,
NETDATA.chartRefresherWaitTime()
);
// console.log('chartRefresher() end3 will run in ' + NETDATA.chartRefresherWaitTime().toString() + ' ms');
return;
}
if (typeof NETDATA.options.pauseCallback === 'function') {
// console.log('auto-refresher is calling pauseCallback');
NETDATA.options.pause = true;
NETDATA.options.pauseCallback();
NETDATA.chartRefresher();
// console.log('chartRefresher() end4 (nested)');
return;
}
if (!NETDATA.options.current.parallel_refresher) {
// console.log('auto-refresher is calling chartRefresherNoParallel(0)');
NETDATA.chartRefresherNoParallel(0, function () {
NETDATA.chartRefresherTimeoutId = NETDATA.timeout.set(
NETDATA.chartRefresher,
NETDATA.options.current.idle_between_loops
);
});
// console.log('chartRefresher() end5 (no parallel, nested)');
return;
}
if (NETDATA.options.updated_dom) {
// the dom has been updated
// get the dom parts again
// console.log('auto-refresher is calling parseDom()');
NETDATA.parseDom(NETDATA.chartRefresher);
// console.log('chartRefresher() end6 (parseDom)');
return;
}
if (!NETDATA.globalSelectionSync.active()) {
let parallel = [];
let targets = NETDATA.intersectionObserver.targets();
let len = targets.length;
let state;
while (len--) {
state = targets[len];
if (state.running || state.isVisible() === false) {
continue;
}
if (!state.library.initialized) {
if (state.library.enabled) {
state.library.initialize(NETDATA.chartRefresher);
//console.log('chartRefresher() end6 (library init)');
return;
}
else {
state.error('chart library "' + state.library_name + '" is not enabled.');
}
}
if (NETDATA.scrollUp) {
parallel.unshift(state);
} else {
parallel.push(state);
}
}
len = parallel.length;
while (len--) {
state = parallel[len];
// console.log('auto-refresher executing in parallel for ' + parallel.length.toString() + ' charts');
// this will execute the jobs in parallel
if (!state.running) {
NETDATA.timeout.set(state.autoRefresh, 0);
}
}
//else {
// console.log('auto-refresher nothing to do');
//}
}
// run the next refresh iteration
NETDATA.chartRefresherTimeoutId = NETDATA.timeout.set(
NETDATA.chartRefresher,
NETDATA.chartRefresherWaitTime()
);
//console.log('chartRefresher() completed in ' + (Date.now() - now).toString() + ' ms');
};
NETDATA.parseDom = function (callback) {
//console.log('parseDom()');
NETDATA.options.last_page_scroll = Date.now();
NETDATA.options.updated_dom = false;
NETDATA.chartRefresherRunsAfterParseDom = 0;
let targets = $('div[data-netdata]'); //.filter(':visible');
if (NETDATA.options.debug.main_loop) {
console.log('DOM updated - there are ' + targets.length + ' charts on page.');
}
NETDATA.intersectionObserver.globalReset();
NETDATA.options.targets = [];
let len = targets.length;
while (len--) {
// the initialization will take care of sizing
// and the "loading..." message
let state = NETDATA.chartState(targets[len]);
NETDATA.options.targets.push(state);
NETDATA.intersectionObserver.observe(state);
}
if (NETDATA.globalChartUnderlay.isActive()) {
NETDATA.globalChartUnderlay.setup();
} else {
NETDATA.globalChartUnderlay.clear();
}
if (typeof callback === 'function') {
return callback();
}
};
// this is the main function - where everything starts
NETDATA.started = false;
NETDATA.start = function () {
// this should be called only once
if (NETDATA.started) {
console.log('netdata is already started');
return;
}
NETDATA.started = true;
NETDATA.options.page_is_visible = true;
$(window).blur(function () {
if (NETDATA.options.current.stop_updates_when_focus_is_lost) {
NETDATA.options.page_is_visible = false;
if (NETDATA.options.debug.focus) {
console.log('Lost Focus!');
}
}
});
$(window).focus(function () {
if (NETDATA.options.current.stop_updates_when_focus_is_lost) {
NETDATA.options.page_is_visible = true;
if (NETDATA.options.debug.focus) {
console.log('Focus restored!');
}
}
});
if (typeof document.hasFocus === 'function' && !document.hasFocus()) {
if (NETDATA.options.current.stop_updates_when_focus_is_lost) {
NETDATA.options.page_is_visible = false;
if (NETDATA.options.debug.focus) {
console.log('Document has no focus!');
}
}
}
// bootstrap tab switching
$('a[data-toggle="tab"]').on('shown.bs.tab', NETDATA.onscroll);
// bootstrap modal switching
let $modal = $('.modal');
$modal.on('hidden.bs.modal', NETDATA.onscroll);
$modal.on('shown.bs.modal', NETDATA.onscroll);
// bootstrap collapse switching
let $collapse = $('.collapse');
$collapse.on('hidden.bs.collapse', NETDATA.onscroll);
$collapse.on('shown.bs.collapse', NETDATA.onscroll);
NETDATA.parseDom(NETDATA.chartRefresher);
// Alarms initialization
setTimeout(NETDATA.alarms.init, 1000);
// Registry initialization
setTimeout(NETDATA.registry.init, netdataRegistryAfterMs);
if (typeof netdataCallback === 'function') {
netdataCallback();
}
};
NETDATA.globalReset = function () {
NETDATA.intersectionObserver.globalReset();
NETDATA.globalSelectionSync.globalReset();
NETDATA.globalPanAndZoom.globalReset();
NETDATA.chartRegistry.globalReset();
NETDATA.commonMin.globalReset();
NETDATA.commonMax.globalReset();
NETDATA.commonColors.globalReset();
NETDATA.unitsConversion.globalReset();
NETDATA.options.targets = [];
NETDATA.parseDom();
NETDATA.unpause();
};
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