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OpenTSDB is a distributed, scalable Time Series Database (TSDB)
written on top of HBase. OpenTSDB was written to address a common need:
store, index and serve metrics collected from computer systems (network
gear, operating systems, applications) at a large scale, and make this
data easily accessible and graphable.
// This file is part of OpenTSDB.
// Copyright (C) 2010-2012 The OpenTSDB Authors.
//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 2.1 of the License, or (at your
// option) any later version. This program is distributed in the hope that it
// will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
// General Public License for more details. You should have received a copy
// of the GNU Lesser General Public License along with this program. If not,
// see stylesMap = new HashMap();
static {
Map map = new HashMap();
map.put("linespoint", 0);
map.put("points", 1);
map.put("circles", 3);
map.put("dots", 4);
stylesMap = Collections.unmodifiableMap(map);
}
// Some URLs we use to fetch data from the TSD.
private static final String AGGREGATORS_URL = "aggregators";
private static final String LOGS_URL = "logs?json";
private static final String STATS_URL = "stats?json";
private static final String VERSION_URL = "version?json";
private static final DateTimeFormat FULLDATE =
DateTimeFormat.getFormat("yyyy/MM/dd-HH:mm:ss");
private final Label current_error = new Label();
private final DateTimeBox start_datebox = new DateTimeBox();
private final DateTimeBox end_datebox = new DateTimeBox();
private final CheckBox autoreload = new CheckBox("Autoreload");
private final ValidatedTextBox autoreoload_interval = new ValidatedTextBox();
private Timer autoreoload_timer;
private final ValidatedTextBox yrange = new ValidatedTextBox();
private final ValidatedTextBox y2range = new ValidatedTextBox();
private final CheckBox ylog = new CheckBox();
private final CheckBox y2log = new CheckBox();
private final TextBox ylabel = new TextBox();
private final TextBox y2label = new TextBox();
private final ValidatedTextBox yformat = new ValidatedTextBox();
private final ValidatedTextBox y2format = new ValidatedTextBox();
private final ValidatedTextBox wxh = new ValidatedTextBox();
private String keypos = ""; // Position of the key on the graph.
private final CheckBox horizontalkey = new CheckBox("Horizontal layout");
private final CheckBox keybox = new CheckBox("Box");
private final CheckBox nokey = new CheckBox("No key (overrides others)");
// Styling options.
private final CheckBox smooth = new CheckBox();
private final ListBox styles = new ListBox();
private String timezone = "";
// Annotations handling flags.
private boolean hide_annotations = false;
private boolean show_global_annotations = false;
/**
* Handles every change to the query form and gets a new graph.
* Whenever the user changes one of the parameters of the graph, we want
* to automatically get a new graph.
*/
private final EventsHandler refreshgraph = new EventsHandler() {
protected void onEvent(final DomEvent event) {
refreshGraph();
}
};
final MetricForm.MetricChangeHandler metric_change_handler =
new MetricForm.MetricChangeHandler() {
public void onMetricChange(final MetricForm metric) {
final int index = metrics.getWidgetIndex(metric);
metrics.getTabBar().setTabText(index, getTabTitle(metric));
}
private String getTabTitle(final MetricForm metric) {
final String metrictext = metric.getMetric();
final int last_period = metrictext.lastIndexOf('.');
if (last_period < 0) {
return metrictext;
}
return metrictext.substring(last_period + 1);
}
};
final EventsHandler updatey2range = new EventsHandler() {
protected void onEvent(final DomEvent event) {
for (final Widget metric : metrics) {
if (!(metric instanceof MetricForm)) {
continue;
}
if (((MetricForm) metric).x1y2().getValue()) {
y2range.setEnabled(true);
y2log.setEnabled(true);
y2label.setEnabled(true);
y2format.setEnabled(true);
return;
}
}
y2range.setEnabled(false);
y2log.setEnabled(false);
y2label.setEnabled(false);
y2format.setEnabled(false);
}
};
/** List of known aggregation functions. Fetched once from the server. */
private final ArrayList aggregators = new ArrayList();
/**
* List of known downsampling fill policies.
* TODO: fetch from server.
*/
private final List fill_policies = Arrays.asList("none", "nan",
"zero", "null");
private final DecoratedTabPanel metrics = new DecoratedTabPanel();
/** Panel to place generated graphs and a box for zoom highlighting. */
private final AbsolutePanel graphbox = new AbsolutePanel();
private final Image graph = new Image();
private final ZoomBox zoom_box = new ZoomBox();
private final Label graphstatus = new Label();
/** Remember the last URI requested to avoid requesting twice the same. */
private String lastgraphuri;
/**
* We only send one request at a time, how many have we not sent yet?.
* Note that we don't buffer pending requests. When there are multiple
* ones pending, we will only execute the last one and discard the other
* intermediate ones, since the user is no longer interested in them.
*/
private int pending_requests = 0;
/** How many graph requests we make. */
private int nrequests = 0;
// Other misc panels.
private final FlexTable logs = new FlexTable();
private final FlexTable stats_table = new FlexTable();
private final HTML build_data = new HTML("Loading...");
/**
* This is the entry point method.
*/
public void onModuleLoad() {
asyncGetJson(AGGREGATORS_URL, new GotJsonCallback() {
public void got(final JSONValue json) {
// Do we need more manual type checking? Not sure what will happen
// in the browser if something other than an array is returned.
final JSONArray aggs = json.isArray();
for (int i = 0; i < aggs.size(); i++) {
aggregators.add(aggs.get(i).isString().stringValue());
}
((MetricForm) metrics.getWidget(0)).setAggregators(aggregators);
refreshFromQueryString();
refreshGraph();
}
});
// All UI elements need to regenerate the graph when changed.
{
final ValueChangeHandler vch = new ValueChangeHandler() {
public void onValueChange(final ValueChangeEvent event) {
refreshGraph();
}
};
TextBox tb = start_datebox.getTextBox();
tb.addBlurHandler(refreshgraph);
tb.addKeyPressHandler(refreshgraph);
start_datebox.addValueChangeHandler(vch);
tb = end_datebox.getTextBox();
tb.addBlurHandler(refreshgraph);
tb.addKeyPressHandler(refreshgraph);
end_datebox.addValueChangeHandler(vch);
}
autoreoload_interval.addBlurHandler(refreshgraph);
autoreoload_interval.addKeyPressHandler(refreshgraph);
yrange.addBlurHandler(refreshgraph);
yrange.addKeyPressHandler(refreshgraph);
y2range.addBlurHandler(refreshgraph);
y2range.addKeyPressHandler(refreshgraph);
ylog.addClickHandler(new AdjustYRangeCheckOnClick(ylog, yrange));
y2log.addClickHandler(new AdjustYRangeCheckOnClick(y2log, y2range));
ylog.addClickHandler(refreshgraph);
y2log.addClickHandler(refreshgraph);
ylabel.addBlurHandler(refreshgraph);
ylabel.addKeyPressHandler(refreshgraph);
y2label.addBlurHandler(refreshgraph);
y2label.addKeyPressHandler(refreshgraph);
yformat.addBlurHandler(refreshgraph);
yformat.addKeyPressHandler(refreshgraph);
y2format.addBlurHandler(refreshgraph);
y2format.addKeyPressHandler(refreshgraph);
wxh.addBlurHandler(refreshgraph);
wxh.addKeyPressHandler(refreshgraph);
horizontalkey.addClickHandler(refreshgraph);
keybox.addClickHandler(refreshgraph);
nokey.addClickHandler(refreshgraph);
smooth.addClickHandler(refreshgraph);
styles.addChangeHandler(refreshgraph);
yrange.setValidationRegexp("^(" // Nothing or
+ "|\\[([-+.0-9eE]+|\\*)?" // "[start
+ ":([-+.0-9eE]+|\\*)?\\])$"); // :end]"
yrange.setVisibleLength(5);
yrange.setMaxLength(44); // MAX=2^26=20 chars: "[-$MAX:$MAX]"
yrange.setText("[0:]");
y2range.setValidationRegexp("^(" // Nothing or
+ "|\\[([-+.0-9eE]+|\\*)?" // "[start
+ ":([-+.0-9eE]+|\\*)?\\])$"); // :end]"
y2range.setVisibleLength(5);
y2range.setMaxLength(44); // MAX=2^26=20 chars: "[-$MAX:$MAX]"
y2range.setText("[0:]");
y2range.setEnabled(false);
y2log.setEnabled(false);
ylabel.setVisibleLength(10);
ylabel.setMaxLength(50); // Arbitrary limit.
y2label.setVisibleLength(10);
y2label.setMaxLength(50); // Arbitrary limit.
y2label.setEnabled(false);
yformat.setValidationRegexp("^(|.*%..*)$"); // Nothing or at least one %?
yformat.setVisibleLength(10);
yformat.setMaxLength(16); // Arbitrary limit.
y2format.setValidationRegexp("^(|.*%..*)$"); // Nothing or at least one %?
y2format.setVisibleLength(10);
y2format.setMaxLength(16); // Arbitrary limit.
y2format.setEnabled(false);
wxh.setValidationRegexp("^[1-9][0-9]{2,}x[1-9][0-9]{2,}$"); // 100x100
wxh.setVisibleLength(9);
wxh.setMaxLength(11); // 99999x99999
wxh.setText((Window.getClientWidth() - 20) + "x"
+ (Window.getClientHeight() * 4 / 5));
final FlexTable table = new FlexTable();
table.setText(0, 0, "From");
{
final HorizontalPanel hbox = new HorizontalPanel();
hbox.add(new InlineLabel("To"));
final Anchor now = new Anchor("(now)");
now.addClickHandler(new ClickHandler() {
public void onClick(final ClickEvent event) {
end_datebox.setValue(new Date());
refreshGraph();
}
});
hbox.add(now);
hbox.add(autoreload);
hbox.setWidth("100%");
table.setWidget(0, 1, hbox);
}
autoreload.addValueChangeHandler(new ValueChangeHandler() {
@Override
public void onValueChange(final ValueChangeEvent event) {
if (autoreload.getValue()) {
final HorizontalPanel hbox = new HorizontalPanel();
hbox.setWidth("100%");
hbox.add(new InlineLabel("Every:"));
hbox.add(autoreoload_interval);
hbox.add(new InlineLabel("seconds"));
table.setWidget(1, 1, hbox);
if (autoreoload_interval.getValue().isEmpty()) {
autoreoload_interval.setValue("15");
}
autoreoload_interval.setFocus(true);
lastgraphuri = ""; // Force refreshGraph.
refreshGraph(); // Trigger the 1st auto-reload
} else {
table.setWidget(1, 1, end_datebox);
}
}
});
autoreoload_interval.setValidationRegexp("^([5-9]|[1-9][0-9]+)$"); // >=5s
autoreoload_interval.setMaxLength(4);
autoreoload_interval.setVisibleLength(8);
table.setWidget(1, 0, start_datebox);
table.setWidget(1, 1, end_datebox);
{
final HorizontalPanel hbox = new HorizontalPanel();
hbox.add(new InlineLabel("WxH:"));
hbox.add(wxh);
table.setWidget(0, 3, hbox);
}
{
addMetricForm("metric 1", 0);
metrics.selectTab(0);
metrics.add(new InlineLabel("Loading..."), "+");
metrics.addBeforeSelectionHandler(new BeforeSelectionHandler() {
public void onBeforeSelection(final BeforeSelectionEvent event) {
final int item = event.getItem();
final int nitems = metrics.getWidgetCount();
if (item == nitems - 1) { // Last item: the "+" was clicked.
event.cancel();
final MetricForm metric = addMetricForm("metric " + nitems, item);
metrics.selectTab(item);
metric.setFocus(true);
}
}
});
table.setWidget(2, 0, metrics);
}
table.getFlexCellFormatter().setColSpan(2, 0, 2);
table.getFlexCellFormatter().setRowSpan(1, 3, 2);
final DecoratedTabPanel optpanel = new DecoratedTabPanel();
optpanel.add(makeAxesPanel(), "Axes");
optpanel.add(makeKeyPanel(), "Key");
optpanel.add(makeStylePanel(), "Style");
optpanel.selectTab(0);
table.setWidget(1, 3, optpanel);
final DecoratorPanel decorator = new DecoratorPanel();
decorator.setWidget(table);
final VerticalPanel graphpanel = new VerticalPanel();
graphpanel.add(decorator);
{
final VerticalPanel graphvbox = new VerticalPanel();
graphvbox.add(graphstatus);
graph.setVisible(false);
// Put the graph image element and the zoombox elements inside the absolute panel
graphbox.add(graph, 0, 0);
zoom_box.setVisible(false);
graphbox.add(zoom_box, 0, 0);
graph.addMouseOverHandler(new MouseOverHandler() {
public void onMouseOver(final MouseOverEvent event) {
final Style style = graphbox.getElement().getStyle();
style.setCursor(Cursor.CROSSHAIR);
}
});
graph.addMouseOutHandler(new MouseOutHandler() {
public void onMouseOut(final MouseOutEvent event) {
final Style style = graphbox.getElement().getStyle();
style.setCursor(Cursor.AUTO);
}
});
graphvbox.add(graphbox);
graph.addErrorHandler(new ErrorHandler() {
public void onError(final ErrorEvent event) {
graphstatus.setText("Oops, failed to load the graph.");
}
});
graph.addLoadHandler(new LoadHandler() {
public void onLoad(final LoadEvent event) {
graphbox.setWidth(graph.getWidth() + "px");
graphbox.setHeight(graph.getHeight() + "px");
}
});
graphpanel.add(graphvbox);
}
final DecoratedTabPanel mainpanel = new DecoratedTabPanel();
mainpanel.setWidth("100%");
mainpanel.add(graphpanel, "Graph");
mainpanel.add(stats_table, "Stats");
mainpanel.add(logs, "Logs");
mainpanel.add(build_data, "Version");
mainpanel.selectTab(0);
mainpanel.addBeforeSelectionHandler(new BeforeSelectionHandler() {
public void onBeforeSelection(final BeforeSelectionEvent event) {
clearError();
final int item = event.getItem();
switch (item) {
case 1: refreshStats(); return;
case 2: refreshLogs(); return;
case 3: refreshVersion(); return;
}
}
});
final VerticalPanel root = new VerticalPanel();
root.setWidth("100%");
root.add(current_error);
current_error.setVisible(false);
current_error.addStyleName("dateBoxFormatError");
root.add(mainpanel);
RootPanel.get("queryuimain").add(root);
// Must be done at the end, once all the widgets are attached.
ensureSameWidgetSize(optpanel);
History.addHistoryListener(this);
}
@Override
public void onHistoryChanged(String historyToken) {
refreshFromQueryString();
refreshGraph();
}
/** Additional styling options. */
private Grid makeStylePanel() {
for (Entry item : stylesMap.entrySet()) {
styles.insertItem(item.getKey(), item.getValue());
}
final Grid grid = new Grid(5, 3);
grid.setText(0, 1, "Smooth");
grid.setWidget(0, 2, smooth);
grid.setText(1, 1, "Style");
grid.setWidget(1, 2, styles);
return grid;
}
/**
* Builds the panel containing customizations for the axes of the graph.
*/
private Grid makeAxesPanel() {
final Grid grid = new Grid(5, 3);
grid.setText(0, 1, "Y");
grid.setText(0, 2, "Y2");
setTextAlignCenter(grid.getRowFormatter().getElement(0));
grid.setText(1, 0, "Label");
grid.setWidget(1, 1, ylabel);
grid.setWidget(1, 2, y2label);
grid.setText(2, 0, "Format");
grid.setWidget(2, 1, yformat);
grid.setWidget(2, 2, y2format);
grid.setText(3, 0, "Range");
grid.setWidget(3, 1, yrange);
grid.setWidget(3, 2, y2range);
grid.setText(4, 0, "Log scale");
grid.setWidget(4, 1, ylog);
grid.setWidget(4, 2, y2log);
setTextAlignCenter(grid.getCellFormatter().getElement(4, 1));
setTextAlignCenter(grid.getCellFormatter().getElement(4, 2));
return grid;
}
private MetricForm addMetricForm(final String label, final int item) {
final MetricForm metric = new MetricForm(refreshgraph);
metric.x1y2().addClickHandler(updatey2range);
metric.setMetricChangeHandler(metric_change_handler);
metric.setAggregators(aggregators);
metric.setFillPolicies(fill_policies);
metrics.insert(metric, label, item);
return metric;
}
private final HashMap keypos_map =
new HashMap(17);
/**
* Small helper to build a radio button used to change the position of the
* key of the graph.
*/
private RadioButton addKeyRadioButton(final Grid grid,
final int row, final int col,
final String pos) {
final RadioButton rb = new RadioButton("keypos");
rb.addClickHandler(new ClickHandler() {
public void onClick(final ClickEvent event) {
keypos = pos;
}
});
rb.addClickHandler(refreshgraph);
grid.setWidget(row, col, rb);
keypos_map.put(pos, rb);
return rb;
}
/**
* Builds the panel containing the customizations for the key of the graph.
*/
private Widget makeKeyPanel() {
final Grid grid = new Grid(5, 5);
addKeyRadioButton(grid, 0, 0, "out left top");
addKeyRadioButton(grid, 0, 2, "out center top");
addKeyRadioButton(grid, 0, 4, "out right top");
addKeyRadioButton(grid, 1, 1, "top left");
addKeyRadioButton(grid, 1, 2, "top center");
addKeyRadioButton(grid, 1, 3, "top right").setValue(true);
addKeyRadioButton(grid, 2, 0, "out center left");
addKeyRadioButton(grid, 2, 1, "center left");
addKeyRadioButton(grid, 2, 2, "center");
addKeyRadioButton(grid, 2, 3, "center right");
addKeyRadioButton(grid, 2, 4, "out center right");
addKeyRadioButton(grid, 3, 1, "bottom left");
addKeyRadioButton(grid, 3, 2, "bottom center");
addKeyRadioButton(grid, 3, 3, "bottom right");
addKeyRadioButton(grid, 4, 0, "out bottom left");
addKeyRadioButton(grid, 4, 2, "out bottom center");
addKeyRadioButton(grid, 4, 4, "out bottom right");
final Grid.CellFormatter cf = grid.getCellFormatter();
cf.getElement(1, 1).getStyle().setProperty("borderLeft", "1px solid #000");
cf.getElement(1, 1).getStyle().setProperty("borderTop", "1px solid #000");
cf.getElement(1, 2).getStyle().setProperty("borderTop", "1px solid #000");
cf.getElement(1, 3).getStyle().setProperty("borderTop", "1px solid #000");
cf.getElement(1, 3).getStyle().setProperty("borderRight", "1px solid #000");
cf.getElement(2, 1).getStyle().setProperty("borderLeft", "1px solid #000");
cf.getElement(2, 3).getStyle().setProperty("borderRight", "1px solid #000");
cf.getElement(3, 1).getStyle().setProperty("borderLeft", "1px solid #000");
cf.getElement(3, 1).getStyle().setProperty("borderBottom", "1px solid #000");
cf.getElement(3, 2).getStyle().setProperty("borderBottom", "1px solid #000");
cf.getElement(3, 3).getStyle().setProperty("borderBottom", "1px solid #000");
cf.getElement(3, 3).getStyle().setProperty("borderRight", "1px solid #000");
final VerticalPanel vbox = new VerticalPanel();
vbox.add(new InlineLabel("Key location:"));
vbox.add(grid);
vbox.add(horizontalkey);
keybox.setValue(true);
vbox.add(keybox);
vbox.add(nokey);
return vbox;
}
private void refreshStats() {
asyncGetJson(STATS_URL, new GotJsonCallback() {
public void got(final JSONValue json) {
final JSONArray stats = json.isArray();
final int nstats = stats.size();
for (int i = 0; i < nstats; i++) {
final String stat = stats.get(i).isString().stringValue();
String part = stat.substring(0, stat.indexOf(' '));
stats_table.setText(i, 0, part); // metric
int pos = part.length() + 1;
part = stat.substring(pos, stat.indexOf(' ', pos));
stats_table.setText(i, 1, part); // timestamp
pos += part.length() + 1;
part = stat.substring(pos, stat.indexOf(' ', pos));
stats_table.setText(i, 2, part); // value
pos += part.length() + 1;
stats_table.setText(i, 3, stat.substring(pos)); // tags
}
}
});
}
private void refreshVersion() {
asyncGetJson(VERSION_URL, new GotJsonCallback() {
public void got(final JSONValue json) {
final JSONObject bd = json.isObject();
final JSONString shortrev = bd.get("short_revision").isString();
final JSONString status = bd.get("repo_status").isString();
final JSONString stamp = bd.get("timestamp").isString();
final JSONString user = bd.get("user").isString();
final JSONString host = bd.get("host").isString();
final JSONString repo = bd.get("repo").isString();
final JSONString version = bd.get("version").isString();
build_data.setHTML(
"OpenTSDB version [" + version.stringValue() + "] built from revision "
+ shortrev.stringValue()
+ " in a " + status.stringValue() + " state
"
+ "Built on " + new Date((Long.parseLong(stamp.stringValue()) * 1000))
+ " by " + user.stringValue() + '@' + host.stringValue()
+ ':' + repo.stringValue());
}
});
}
private void refreshLogs() {
asyncGetJson(LOGS_URL, new GotJsonCallback() {
public void got(final JSONValue json) {
final JSONArray logmsgs = json.isArray();
final int nmsgs = logmsgs.size();
final FlexTable.FlexCellFormatter fcf = logs.getFlexCellFormatter();
final FlexTable.RowFormatter rf = logs.getRowFormatter();
for (int i = 0; i < nmsgs; i++) {
final String msg = logmsgs.get(i).isString().stringValue();
String part = msg.substring(0, msg.indexOf('\t'));
logs.setText(i * 2, 0,
new Date(Integer.valueOf(part) * 1000L).toString());
logs.setText(i * 2 + 1, 0, ""); // So we can change the style ahead.
int pos = part.length() + 1;
part = msg.substring(pos, msg.indexOf('\t', pos));
if ("WARN".equals(part)) {
rf.getElement(i * 2).getStyle().setBackgroundColor("#FCC");
rf.getElement(i * 2 + 1).getStyle().setBackgroundColor("#FCC");
} else if ("ERROR".equals(part)) {
rf.getElement(i * 2).getStyle().setBackgroundColor("#F99");
rf.getElement(i * 2 + 1).getStyle().setBackgroundColor("#F99");
} else {
rf.getElement(i * 2).getStyle().clearBackgroundColor();
rf.getElement(i * 2 + 1).getStyle().clearBackgroundColor();
if ((i % 2) == 0) {
rf.addStyleName(i * 2, "subg");
rf.addStyleName(i * 2 + 1, "subg");
}
}
pos += part.length() + 1;
logs.setText(i * 2, 1, part); // level
part = msg.substring(pos, msg.indexOf('\t', pos));
pos += part.length() + 1;
logs.setText(i * 2, 2, part); // thread
part = msg.substring(pos, msg.indexOf('\t', pos));
pos += part.length() + 1;
if (part.startsWith("net.opentsdb.")) {
part = part.substring(13);
} else if (part.startsWith("org.hbase.")) {
part = part.substring(10);
}
logs.setText(i * 2, 3, part); // logger
logs.setText(i * 2 + 1, 0, msg.substring(pos)); // message
fcf.setColSpan(i * 2 + 1, 0, 4);
rf.addStyleName(i * 2, "fwf");
rf.addStyleName(i * 2 + 1, "fwf");
}
}
});
}
private void addLabels(final StringBuilder url) {
final String ylabel = this.ylabel.getText();
if (!ylabel.isEmpty()) {
url.append("&ylabel=").append(ylabel);
}
if (y2label.isEnabled()) {
final String y2label = this.y2label.getText();
if (!y2label.isEmpty()) {
url.append("&y2label=").append(y2label);
}
}
}
private void addFormats(final StringBuilder url) {
final String yformat = this.yformat.getText();
if (!yformat.isEmpty()) {
url.append("&yformat=").append(yformat);
}
if (y2format.isEnabled()) {
final String y2format = this.y2format.getText();
if (!y2format.isEmpty()) {
url.append("&y2format=").append(y2format);
}
}
}
private void addYRanges(final StringBuilder url) {
final String yrange = this.yrange.getText();
if (!yrange.isEmpty()) {
url.append("&yrange=").append(yrange);
}
if (y2range.isEnabled()) {
final String y2range = this.y2range.getText();
if (!y2range.isEmpty()) {
url.append("&y2range=").append(y2range);
}
}
}
private void addLogscales(final StringBuilder url) {
if (ylog.getValue()) {
url.append("&ylog");
}
if (y2log.isEnabled() && y2log.getValue()) {
url.append("&y2log");
}
}
/**
* Maybe sets the text of a {@link TextBox} from a query string parameter.
* @param qs A parsed query string.
* @param key Name of the query string parameter.
* If this parameter wasn't passed, the {@link TextBox} will be emptied.
* @param tb The {@link TextBox} to change.
*/
private static void maybeSetTextbox(final QueryString qs,
final String key,
final TextBox tb) {
final ArrayList values = qs.get(key);
if (values == null) {
tb.setText("");
return;
}
tb.setText(values.get(0));
}
/**
* Sets the text of a {@link TextBox} from a query string parameter.
* @param qs A parsed query string.
* @param key Name of the query string parameter.
* @param tb The {@link TextBox} to change.
*/
private static void setTextbox(final QueryString qs,
final String key,
final TextBox tb) {
final ArrayList values = qs.get(key);
if (values != null) {
tb.setText(values.get(0));
}
}
private static QueryString getQueryString(final String qs) {
return qs.isEmpty() ? new QueryString() : QueryString.decode(qs);
}
private void refreshFromQueryString() {
final QueryString qs = getQueryString(URL.decode(History.getToken()));
maybeSetTextbox(qs, "start", start_datebox.getTextBox());
maybeSetTextbox(qs, "end", end_datebox.getTextBox());
setTextbox(qs, "wxh", wxh);
autoreload.setValue(qs.containsKey("autoreload"), true);
maybeSetTextbox(qs, "autoreload", autoreoload_interval);
show_global_annotations = qs.containsKey("global_annotations") ? true : false;
hide_annotations = qs.containsKey("no_annotations") ? true : false;
//get the tz param value
final ArrayList tzvalues = qs.get("tz");
if (tzvalues == null)
timezone = "";
else
timezone = tzvalues.get(0);
final ArrayList newmetrics = qs.get("m");
if (newmetrics == null) { // Clear all metric forms.
final int toremove = metrics.getWidgetCount() - 1;
addMetricForm("metric 1", 0);
metrics.selectTab(0);
for (int i = 0; i < toremove; i++) {
metrics.remove(1);
}
return;
}
final int n = newmetrics.size(); // We want this many metrics.
ArrayList options = qs.get("o");
if (options == null) {
options = new ArrayList(n);
}
for (int i = options.size(); i < n; i++) { // Make both arrays equal size.
options.add(""); // Add missing o's.
}
for (int i = 0; i < newmetrics.size(); ++i) {
if (i == metrics.getWidgetCount() - 1) {
addMetricForm("", i);
}
final MetricForm metric = (MetricForm) metrics.getWidget(i);
metric.updateFromQueryString(newmetrics.get(i), options.get(i));
}
// Remove extra metric forms.
final int m = metrics.getWidgetCount() - 1; // We have this many metrics.
int showing = metrics.getTabBar().getSelectedTab(); // Currently selected.
for (int i = m - 1; i >= n; i--) {
if (showing == i) { // If we're about to remove the currently selected,
metrics.selectTab(--showing); // fix focus to not wind up nowhere.
}
metrics.remove(i);
}
updatey2range.onEvent(null);
maybeSetTextbox(qs, "ylabel", ylabel);
maybeSetTextbox(qs, "y2label", y2label);
maybeSetTextbox(qs, "yformat", yformat);
maybeSetTextbox(qs, "y2format", y2format);
maybeSetTextbox(qs, "yrange", yrange);
maybeSetTextbox(qs, "y2range", y2range);
ylog.setValue(qs.containsKey("ylog"));
y2log.setValue(qs.containsKey("y2log"));
if (qs.containsKey("key")) {
final String key = qs.getFirst("key");
keybox.setValue(key.contains(" box"));
horizontalkey.setValue(key.contains(" horiz"));
keypos = key.replaceAll(" (box|horiz\\w*)", "");
keypos_map.get(keypos).setChecked(true);
} else {
keybox.setValue(false);
horizontalkey.setValue(false);
keypos_map.get("top right").setChecked(true);
keypos = "";
}
nokey.setValue(qs.containsKey("nokey"));
smooth.setValue(qs.containsKey("smooth"));
if (stylesMap.containsKey(qs.getFirst("style"))) {
styles.setSelectedIndex(stylesMap.get(qs.getFirst("style")));
}
}
private void refreshGraph() {
final Date start = start_datebox.getValue();
if (start == null) {
graphstatus.setText("Please specify a start time.");
return;
}
final Date end = end_datebox.getValue();
if (end != null && !autoreload.getValue()) {
if (end.getTime() <= start.getTime()) {
end_datebox.addStyleName("dateBoxFormatError");
graphstatus.setText("End time must be after start time!");
return;
}
}
final StringBuilder url = new StringBuilder();
url.append("q?start=");
final String start_text = start_datebox.getTextBox().getText();
if (start_text.endsWith(" ago") || start_text.endsWith("-ago")) {
url.append(start_text);
} else {
url.append(FULLDATE.format(start));
}
if (end != null && !autoreload.getValue()) {
url.append("&end=");
final String end_text = end_datebox.getTextBox().getText();
if (end_text.endsWith(" ago") || end_text.endsWith("-ago")) {
url.append(end_text);
} else {
url.append(FULLDATE.format(end));
}
} else {
// If there's no end-time, the graph may change while the URL remains
// the same. No browser seems to re-fetch an image once it's been
// fetched, even if we destroy the DOM object and re-created it with the
// same src attribute. This has nothing to do with caching headers sent
// by the server. The browsers simply won't retrieve the same URL again
// through JavaScript manipulations, period. So as a workaround, we add
// a special parameter that the server will delete from the query.
url.append("&ignore=" + nrequests++);
}
if(timezone.length() > 1)
url.append("&tz=").append(timezone);
if (!addAllMetrics(url)) {
return;
}
addLabels(url);
addFormats(url);
addYRanges(url);
addLogscales(url);
if (nokey.getValue()) {
url.append("&nokey");
} else if (!keypos.isEmpty() || horizontalkey.getValue()) {
url.append("&key=");
if (!keypos.isEmpty()) {
url.append(keypos);
}
if (horizontalkey.getValue()) {
url.append(" horiz");
}
if (keybox.getValue()) {
url.append(" box");
}
}
url.append("&wxh=").append(wxh.getText());
if (smooth.getValue()) {
url.append("&smooth=csplines");
}
url.append("&style=").append(styles.getValue(styles.getSelectedIndex()));
if (hide_annotations) {
url.append("&no_annotations=true");
}
if (show_global_annotations) {
url.append("&global_annotations=true");
}
final String unencodedUri = url.toString();
final String uri = URL.encode(unencodedUri);
if (uri.equals(lastgraphuri)) {
return; // Don't re-request the same graph.
} else if (pending_requests++ > 0) {
return;
}
lastgraphuri = uri;
graphstatus.setText("Loading graph...");
asyncGetJson(uri + "&json", new GotJsonCallback() {
public void got(final JSONValue json) {
if (autoreoload_timer != null) {
autoreoload_timer.cancel();
autoreoload_timer = null;
}
final JSONObject result = json.isObject();
final JSONValue err = result.get("err");
String msg = "";
if (err != null) {
displayError("An error occurred while generating the graph: "
+ err.isString().stringValue());
graphstatus.setText("Please correct the error above.");
} else {
clearError();
String history = unencodedUri.substring(2) // Remove "q?".
.replaceFirst("ignore=[^&]*&", ""); // Unnecessary cruft.
if (autoreload.getValue()) {
history += "&autoreload=" + autoreoload_interval.getText();
}
if (!history.equals(URL.decode(History.getToken()))) {
History.newItem(history, false);
}
final JSONValue nplotted = result.get("plotted");
final JSONValue cachehit = result.get("cachehit");
if (cachehit != null) {
msg += "Cache hit (" + cachehit.isString().stringValue() + "). ";
}
if (nplotted != null && nplotted.isNumber().doubleValue() > 0) {
graph.setUrl(uri + "&png");
graph.setVisible(true);
msg += result.get("points").isNumber() + " points retrieved, "
+ nplotted + " points plotted";
} else {
graph.setVisible(false);
msg += "Your query didn't return anything";
}
final JSONValue timing = result.get("timing");
if (timing != null) {
msg += " in " + timing + "ms.";
} else {
msg += '.';
}
}
final JSONValue info = result.get("info");
if (info != null) {
if (!msg.isEmpty()) {
msg += ' ';
}
msg += info.isString().stringValue();
}
graphstatus.setText(msg);
if (result.get("etags") != null) {
final JSONArray etags = result.get("etags").isArray();
final int netags = etags.size();
for (int i = 0; i < netags; i++) {
if (i >= metrics.getWidgetCount()) {
break;
}
final Widget widget = metrics.getWidget(i);
if (!(widget instanceof MetricForm)) {
break;
}
final MetricForm metric = (MetricForm) widget;
final JSONArray tags = etags.get(i).isArray();
// Skip if no tags were associated with the query.
if (null != tags) {
for (int j = 0; j < tags.size(); j++) {
metric.autoSuggestTag(tags.get(j).isString().stringValue());
}
}
}
}
if (autoreload.getValue()) {
final int reload_in = Integer.parseInt(autoreoload_interval.getValue());
if (reload_in >= 5) {
autoreoload_timer = new Timer() {
public void run() {
// Verify that we still want auto reload and that the graph
// hasn't been updated in the mean time.
if (autoreload.getValue() && lastgraphuri == uri) {
// Force refreshGraph to believe that we want a new graph.
lastgraphuri = "";
refreshGraph();
}
}
};
autoreoload_timer.schedule(reload_in * 1000);
}
}
if (--pending_requests > 0) {
pending_requests = 0;
refreshGraph();
}
}
});
}
private boolean addAllMetrics(final StringBuilder url) {
boolean found_metric = false;
for (final Widget widget : metrics) {
if (!(widget instanceof MetricForm)) {
continue;
}
final MetricForm metric = (MetricForm) widget;
found_metric |= metric.buildQueryString(url);
}
if (!found_metric) {
graphstatus.setText("Please specify a metric.");
}
return found_metric;
}
private void asyncGetJson(final String url, final GotJsonCallback callback) {
final RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, url);
try {
builder.sendRequest(null, new RequestCallback() {
public void onError(final Request request, final Throwable e) {
displayError("Failed to get " + url + ": " + e.getMessage());
// Since we don't call the callback we've been given, reset this
// bit of state as we're not going to retry anything right now.
pending_requests = 0;
}
public void onResponseReceived(final Request request,
final Response response) {
final int code = response.getStatusCode();
if (code == Response.SC_OK) {
clearError();
callback.got(JSONParser.parse(response.getText()));
return;
} else if (code >= Response.SC_BAD_REQUEST) { // 400+ => Oops.
// Since we don't call the callback we've been given, reset this
// bit of state as we're not going to retry anything right now.
pending_requests = 0;
String err = response.getText();
// If the response looks like a JSON object, it probably contains
// an error message.
if (!err.isEmpty() && err.charAt(0) == '{') {
final JSONValue json = JSONParser.parse(err);
final JSONObject result = json == null ? null : json.isObject();
final JSONValue jerr = result == null ? null : result.get("err");
final JSONString serr = jerr == null ? null : jerr.isString();
err = serr.stringValue();
// If the error message has multiple lines (which is common if
// it contains a stack trace), show only the first line and
// hide the rest in a panel users can expand.
final int newline = err.indexOf('\n', 1);
final String msg = "Request failed: " + response.getStatusText();
if (newline < 0) {
displayError(msg + ": " + err);
} else {
displayError(msg);
final DisclosurePanel dp =
new DisclosurePanel(err.substring(0, newline));
RootPanel.get("queryuimain").add(dp); // Attach the widget.
final InlineLabel content =
new InlineLabel(err.substring(newline, err.length()));
content.addStyleName("fwf"); // For readable stack traces.
dp.setContent(content);
current_error.getElement().appendChild(dp.getElement());
}
} else {
displayError("Request failed while getting " + url + ": "
+ response.getStatusText());
// Since we don't call the callback we've been given, reset this
// bit of state as we're not going to retry anything right now.
pending_requests = 0;
}
graphstatus.setText("");
}
}
});
} catch (RequestException e) {
displayError("Failed to get " + url + ": " + e.getMessage());
}
}
private void displayError(final String errmsg) {
current_error.setText(errmsg);
current_error.setVisible(true);
}
private void clearError() {
current_error.setVisible(false);
}
static void setTextAlignCenter(final Element element) {
element.getStyle().setProperty("textAlign", "center");
}
/** Zoom box and associated event handlers. */
private final class ZoomBox extends HTML
implements MouseUpHandler, MouseMoveHandler, MouseDownHandler {
/** "Fudge factor" to account for the axes present on the image. */
private static final int OFFSET_WITH_AXIS = 45;
private static final int OFFSET_WITHOUT_AXIS = 15;
private boolean zoom_selection_active = false;
/** Rectangle of the selection. */
private int start_x;
private int end_x;
private int start_y;
private int end_y;
private HandlerRegistration graph_move_handler;
private HandlerRegistration box_move_handler;
ZoomBox() {
// Set ourselves up as the event handler for all mouse-draggable events.
graph.addMouseDownHandler(this);
graph.addMouseUpHandler(this);
// Also add the handlers on the actual zoom highlight box (this is in
// case the cursor gets on the zoombox, so that it keeps responding
// correctly).
super.addMouseUpHandler(this);
final Style style = super.getElement().getStyle();
style.setProperty("background", "red");
style.setProperty("filter", "alpha(opacity=50)");
style.setProperty("opacity", "0.4");
// Needed to make this object focusable.
super.getElement().setAttribute("tabindex", "-1");
}
@Override
public void onMouseDown(final MouseDownEvent event) {
event.preventDefault();
// Check if the zoom selection is active, if so, it's possible that the
// mouse left the browser mid-selection and got stuck enabled even
// though the mouse isn't still pressed. If that's the case, do a similar
// operation to the onMouseUp event.
if (zoom_selection_active) {
endSelection(event);
return;
}
final Element image = graph.getElement();
zoom_selection_active = true;
start_x = event.getRelativeX(image);
start_y = event.getRelativeY(image);
end_x = 0;
end_y = 0;
graphbox.setWidgetPosition(this, start_x, start_y);
super.setWidth("0px");
super.setHeight("0px");
super.setVisible(true);
// Workaround to steal the focus from whatever had it previously,
// which may cause the graph to reload as a side effect.
super.getElement().focus();
graph_move_handler = graph.addMouseMoveHandler(this);
box_move_handler = super.addMouseMoveHandler(this);
}
@Override
public void onMouseMove(final MouseMoveEvent event) {
event.preventDefault();
final int x = event.getRelativeX(graph.getElement());
final int y = event.getRelativeY(graph.getElement());
int left;
int top;
int width;
int height;
// Figure out the top, left, height, and width of the box based
// on current cursor location.
if (x < start_x) {
left = x;
width = start_x - x;
} else {
left = start_x;
width = x - start_x;
}
if (y < start_y) {
top = y;
height = start_y - y;
} else {
top = start_y;
height = y - start_y;
}
// Resize / move the box as needed based on cursor location.
super.setVisible(false);
graphbox.setWidgetPosition(this, left, top);
super.setWidth(width + "px");
super.setHeight(height + "px");
super.setVisible(true);
}
@Override
public void onMouseUp(final MouseUpEvent event) {
if (zoom_selection_active) {
endSelection(event);
}
}
/**
* Perform operations for when a user completes their selection.
* This involves removing the highlight box and kicking off the
* zoom in operation.
* @param event The event that triggered the end of the selection.
*/
private void endSelection(final MouseEvent event) {
zoom_selection_active = false;
// Stop tracking cursor movements to improve performance.
graph_move_handler.removeHandler();
graph_move_handler = null;
box_move_handler.removeHandler();
box_move_handler = null;
final Element image = graph.getElement();
end_x = event.getRelativeX(image);
end_y = event.getRelativeY(image);
// Hide the zoom box
super.setVisible(false);
super.setWidth("0px");
super.setHeight("0px");
// Calculate the true start/end points of the zoom area selected by
// mouse. If the mouse was dragged left on the graph before being
// let up, then start_x is the right-most edge of the zoomable area.
// If the mouse was dragged right on the graph before being let up,
// then start_x is the left-most edge of the zoomable area.
if (start_x < end_x) {
start_x = start_x - OFFSET_WITH_AXIS;
end_x = end_x - OFFSET_WITH_AXIS;
} else {
final int saved_start = start_x;
start_x = end_x - OFFSET_WITH_AXIS;
end_x = saved_start - OFFSET_WITH_AXIS;
}
int actual_width = graph.getWidth() - OFFSET_WITH_AXIS;
if (y2range.isEnabled()) { // If we have a second Y axis.
actual_width -= OFFSET_WITH_AXIS;
} else {
actual_width -= OFFSET_WITHOUT_AXIS;
}
// Prevent division by zero if image is pathologically small.
// or: Prevent changing anything if the distance the cursor traveled was
// too small (as happens during a simple click or unintentional click).
if (actual_width < 1 || end_x - start_x <= 5) {
return;
}
// Total span of time represented between the start and end times.
final long duration;
final long start = start_datebox.getValue().getTime();
{
final long end;
final Date end_date = end_datebox.getValue();
if (end_date != null) {
end = end_date.getTime();
} else {
end = new Date().getTime();
}
duration = end - start;
}
// Get the start and end positions of the mouse drag operation on the
// image as a percentage of the image size.
final long start_change = start_x * duration / actual_width;
final long end_change = end_x * duration / actual_width;
start_datebox.setValue(new Date(start + start_change));
end_datebox.setValue(new Date(start + end_change));
refreshGraph();
}
};
private final class AdjustYRangeCheckOnClick implements ClickHandler {
private final CheckBox box;
private final ValidatedTextBox range;
public AdjustYRangeCheckOnClick(final CheckBox box,
final ValidatedTextBox range) {
this.box = box;
this.range = range;
}
public void onClick(final ClickEvent event) {
if (box.isEnabled() && box.getValue()
&& "[0:]".equals(range.getValue())) {
range.setValue("[1:]");
} else if (box.isEnabled() && !box.getValue()
&& "[1:]".equals(range.getValue())) {
range.setValue("[0:]");
}
}
};
/**
* Ensures all the widgets in the given panel have the same size.
* Otherwise by default the panel will automatically resize itself to the
* contents of the currently active panel's widget, which is annoying
* because it makes a number of things move around in the UI.
* @param panel The panel containing the widgets to resize.
*/
private static void ensureSameWidgetSize(final DecoratedTabPanel panel) {
if (!panel.isAttached()) {
throw new IllegalArgumentException("panel not attached: " + panel);
}
int maxw = 0;
int maxh = 0;
for (final Widget widget : panel) {
final int w = widget.getOffsetWidth();
final int h = widget.getOffsetHeight();
if (w > maxw) {
maxw = w;
}
if (h > maxh) {
maxh = h;
}
}
if (maxw == 0 || maxh == 0) {
throw new IllegalArgumentException("maxw=" + maxw + " maxh=" + maxh);
}
for (final Widget widget : panel) {
setOffsetWidth(widget, maxw);
setOffsetHeight(widget, maxh);
}
}
/**
* Properly sets the total width of a widget.
* This takes into account decorations such as border, margin, and padding.
*/
private static void setOffsetWidth(final Widget widget, int width) {
widget.setWidth(width + "px");
final int offset = widget.getOffsetWidth();
if (offset > 0) {
width -= offset - width;
if (width > 0) {
widget.setWidth(width + "px");
}
}
}
/**
* Properly sets the total height of a widget.
* This takes into account decorations such as border, margin, and padding.
*/
private static void setOffsetHeight(final Widget widget, int height) {
widget.setHeight(height + "px");
final int offset = widget.getOffsetHeight();
if (offset > 0) {
height -= offset - height;
if (height > 0) {
widget.setHeight(height + "px");
}
}
}
}