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https://github.com/ClickHouse/ClickHouse.git
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Merge pull request #38169 from ClickHouse/trace-visualizer
improve trace-visualizer UX
This commit is contained in:
Sergei Trifonov
GitHub
commit
c0a275984f
@ -1,17 +1,12 @@
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Trace visualizer is a tool for representation of a tracing data as a Gantt diagram.
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# Quick start
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For now this tool is not integrated into ClickHouse and requires a lot of manual adjustments.
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```bash
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cd utils/trace-visualizer
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python3 -m http.server
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```
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Open [localhost](http://localhost:8000). It will show an example of data. To show your tracing data you have to put it in JSON format near `index.html` and change call to `fetchData()` function at the bottom of `index.html`. (Do not forget to disable browser caching while changing it).
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For now this tool is not integrated into ClickHouse and requires manual actions. Open `trace-visualizer/index.html` in your browser. It will show an example of data. To visualize your data click `Load` button and select your trace data JSON file.
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# Visualizing query trace
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First of all [opentelemetry_span_log](https://clickhouse.com/docs/en/operations/opentelemetry/) system table must be enabled to save query traces. Then run a query you want to trace with a setting:
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```sql
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set opentelemetry_start_trace_probability=1;
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SET opentelemetry_start_trace_probability=1;
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SELECT 1;
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```
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@ -22,10 +17,9 @@ SELECT DISTINCT trace_id FROM system.opentelemetry_span_log ORDER BY query_start
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To obtain JSON data suitable for visualizing run:
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```sql
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SELECT tuple (parent_span_id, attribute['clickhouse.thread_id'] || attribute['thread_number'] as thread_id)::Tuple(parent_span_id UInt64, thread_id String) as group, operation_name, start_time_us, finish_time_us, sipHash64(operation_name) as color, attribute
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from system.opentelemetry_span_log
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SELECT tuple (leftPad(attribute['clickhouse.thread_id'] || attribute['thread_number'], 10, '0') as thread_id, parent_span_id)::Tuple(thread_id String, parent_span_id UInt64) as group, operation_name, start_time_us, finish_time_us, sipHash64(operation_name) as color, attribute
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FROM system.opentelemetry_span_log
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WHERE trace_id = 'your-trace-id'
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ORDER BY group ASC
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FORMAT JSON SETTINGS output_format_json_named_tuples_as_objects = 1;
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```
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@ -8,7 +8,6 @@
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}
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rect.zoom-panel {
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/*cursor: ew-resize;*/
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fill: none;
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pointer-events: all;
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}
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@ -20,18 +19,18 @@ rect.zoom-panel {
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}
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.axis.y {
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font-size: 16px;
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font-size: 9px;
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cursor: ns-resize;
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}
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.axis.x {
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font-size: 16px;
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font-size: 9px;
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}
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#ruler {
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text-anchor: middle;
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alignment-baseline: before-edge;
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font-size: 16px;
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font-size: 9px;
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font-family: sans-serif;
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pointer-events: none;
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}
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@ -14,26 +14,77 @@
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<script language="javascript" type="text/javascript" src="js/d3.v4.min.js"></script>
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<script language="javascript" type="text/javascript" src="js/d3-tip-0.8.0-alpha.1.js"></script>
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<script language="javascript" type="text/javascript" src="js/d3-gantt.js"></script>
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<nav class="navbar navbar-default">
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<div class="container-fluid">
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<div class="navbar-header">
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<a class="navbar-brand" href="#">ClickHouse trace-visualizer</a>
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</div>
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<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
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<form class="navbar-form navbar-left">
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<button type="button" class="btn btn-primary" id="toolbar-load" data-toggle="modal" data-target="#loadModal">Load</button>
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</form>
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</div>
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</div>
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</nav>
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<div id="placeholder" class="chart-placeholder"></div>
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<div class="modal fade" id="loadModal" tabindex="-1" role="dialog" aria-labelledby="loadModalLabel">
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<div class="modal-dialog" role="document">
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<div class="modal-content">
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<div class="modal-header">
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<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span
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aria-hidden="true">×</span></button>
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<h4 class="modal-title" id="loadModalLabel">Load Trace JSON</h4>
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</div>
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<div class="modal-body">
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<input type="file" id="loadFiles" value="Load" /><br />
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</div>
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<div class="modal-footer">
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<button type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
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<button type="button" class="btn btn-primary" id="btnDoLoad">Load</button>
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</div>
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</div>
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</div>
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</div>
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</body>
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</html>
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<script language="javascript">
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var example_json = [
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{ t1: 100, t2: 200, band: "band1", color: "#888", text: "text1" },
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{ t1: 300, t2: 400, band: "band2", color: "#ff8", text: "text2" },
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{ t1: 100, t2: 400, band: "band3", color: "#888", text: "some very long text with a lot of letters in it" },
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{ t1: 300, t2: 400, band: "band1", color: "#8ff", text: "some_very_long_identifier_with_a_lot_of_letters_in_it" },
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{ t1: 500, t2: 800, band: "band2", color: "#f8f", text: "test\nif\nnew\nline\nworks\nhere?" }
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];
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var chart = d3.gantt()
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.height(window.innerHeight - $("#placeholder")[0].getBoundingClientRect().y - window.scrollY)
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.selector("#placeholder");
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var example_json = [];
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var example_colors = ["#f88", "#8f8", "#88f", "#888", "#aaa"];
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for (let i = 0; i < 1024; i++) {
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example_json.push({
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t1: i + 50 - Math.random() * 60,
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t2: i + 50 + Math.random() * 60,
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band: "band" + (i % 128),
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color: example_colors[i % example_colors.length],
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text: "it is span #" + i
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});
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}
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example_json.bands = new Set(example_json.map(x => x.band));
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example_json.max_time_ms = Math.max(...example_json.map(x => x.t2));
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var data = null;
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var chart = null;
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function renderChart(parsed) {
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data = parsed;
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if (chart != null) {
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chart.destroy();
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}
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let view_height = window.innerHeight - $("#placeholder")[0].getBoundingClientRect().y - 40;
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let data_height = parsed.bands.size * 8;
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chart = d3.gantt()
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.height(Math.max(view_height, data_height))
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.view_height(view_height)
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.selector("#placeholder")
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.timeDomain([0, parsed.max_time_ms])
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;
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chart(data);
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}
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// Error message popup
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$("<div id='errmsg'></div>").css({
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position: "absolute",
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display: "none",
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@ -46,8 +97,7 @@
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function fetchData(dataurl, parser = x => x) {
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function onDataReceived(json, textStatus, xhr) {
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$("#errmsg").hide();
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data = parser(json);
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chart(data);
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renderChart(parser(json));
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}
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function onDataError(xhr, error) {
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@ -70,6 +120,22 @@
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}
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}
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$("#btnDoLoad").click(function(){
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let element = document.getElementById('loadFiles');
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let files = element.files;
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if (files.length <= 0) {
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return false;
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}
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let fr = new FileReader();
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fr.onload = function(e) {
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$("#errmsg").hide();
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renderChart(parseClickHouseTrace(JSON.parse(e.target.result)));
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}
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fr.readAsText(files.item(0));
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element.value = '';
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$('#loadModal').modal('hide');
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});
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function parseClickHouseTrace(json) {
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let min_time_us = Number.MAX_VALUE;
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for (let i = 0; i < json.data.length; i++) {
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@ -98,21 +164,25 @@
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}
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let result = [];
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let bands = new Set();
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for (let i = 0; i < json.data.length; i++) {
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let span = json.data[i];
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let band = Object.values(span.group).join(' ');
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bands.add(band);
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result.push({
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t1: convertTime(+span.start_time_us),
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t2: convertTime(+span.finish_time_us),
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band: Object.values(span.group).join(' '),
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band,
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color: d3.interpolateRainbow((strHash(span.color) % 256) / 256),
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text: span.operation_name
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});
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}
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chart.timeDomain([0, max_time_ms]);
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result.bands = bands;
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result.max_time_ms = max_time_ms;
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return result;
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}
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fetchData(); // do not fetch, just draw example_json w/o parsing
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//fetchData("your-traces.json" , parseClickHouseTrace);
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//fetchData("your-traces.json", parseClickHouseTrace);
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</script>
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50
utils/trace-visualizer/js/d3-gantt.js
vendored
50
utils/trace-visualizer/js/d3-gantt.js
vendored
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.on("zoom", function() {
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if (tipShown != null) {
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tip.hide(tipShown);
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tipShown = null;
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}
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var tr = d3.event.transform;
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xZoomed = tr.rescaleX(x);
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@ -51,7 +52,7 @@
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zoomContainer1.attr("transform", "translate(" + tr.x + ",0) scale(" + tr.k + ",1)");
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zoomContainer2.attr("transform", "translate(" + tr.x + ",0) scale(" + tr.k + ",1)");
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render();
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//render();
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})
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.on("start", function() {
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zoom.startScreenY = d3.event.sourceEvent.screenY;
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@ -116,6 +117,12 @@
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.call(xAxis)
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;
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// ruler should be drawn above x axis and under y axis
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ruler = fixedContainer.append("g")
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.attr("id", "ruler")
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.attr("transform", "translate(0, 0)")
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;
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// create y axis
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fixedContainer.append("g")
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.attr("class", "y axis")
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@ -186,10 +193,6 @@
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;
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// ruler
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ruler = fixedContainer.append("g")
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.attr("id", "ruler")
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.attr("transform", "translate(0, 0)")
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;
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ruler.append("rect")
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.attr("id", "ruler-line")
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.attr("x", 0)
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@ -218,10 +221,9 @@
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// scroll handling
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window.onscroll = function myFunction() {
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documentBodyScrollLeft(document.body.scrollLeft);
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documentBodyScrollTop(document.body.scrollTop);
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documentBodyScrollLeft(window.scrollX);
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documentBodyScrollTop(window.scrollY);
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var scroll = scrollParams();
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svgChartContainer
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.attr("transform", "translate(" + margin.left
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+ ", " + (margin.top + scroll.y1) + ")");
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@ -282,7 +284,7 @@
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.attr("class", "bar")
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.attr("vector-effect", "non-scaling-stroke")
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.style("fill", d => d.color)
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.on('click', function(d) {
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.on('mouseover', function(d) {
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if (tipShown != d) {
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tipShown = d;
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tip.show(d);
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@ -314,12 +316,11 @@
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//.clamp(true); // dosn't work with zoom/pan
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xZoomed = x;
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y = d3.scaleBand()
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.domain(Object.values(data).map(d => d.band).sort())
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.rangeRound([0, height - margin.top - margin.bottom])
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.padding(0.5);
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.domain([...data.bands])
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.range([1, height - margin.top - margin.bottom])
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.padding(1/8);
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xAxis = d3.axisBottom()
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.scale(x)
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//.tickSubdivide(true)
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.tickSize(8)
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.tickPadding(8);
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yAxis = d3.axisLeft()
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@ -331,7 +332,7 @@
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var documentBodyScrollLeft = function(value) {
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if (!arguments.length) {
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if (documentBodyScrollLeft.value === undefined) {
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documentBodyScrollLeft.value = document.body.scrollLeft;
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documentBodyScrollLeft.value = window.scrollX;
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}
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return documentBodyScrollLeft.value;
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} else {
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@ -343,7 +344,7 @@
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var documentBodyScrollTop = function(value) {
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if (!arguments.length) {
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if (!documentBodyScrollTop.value === undefined) {
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documentBodyScrollTop.value = document.body.scrollTop;
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documentBodyScrollTop.value = window.scrollY;
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}
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return documentBodyScrollTop.value;
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} else {
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@ -353,7 +354,7 @@
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var scrollParams = function() {
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var y1 = documentBodyScrollTop();
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var y2 = y1 + window.innerHeight - margin.footer;
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var y2 = y1 + view_height;
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y2 = Math.min(y2, height - margin.top - margin.bottom);
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var h = y2 - y1;
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return {
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@ -401,7 +402,7 @@
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var textWidth = 10 * posText.length;
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ruler.select("#bgrect")
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.attr("x", -textWidth/2 - xpadding)
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.attr("y", positionRuler.bbox.y - ypadding)
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.attr("y", positionRuler.bbox.y - ypadding + window.scrollY)
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.attr("width", textWidth + (xpadding*2))
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.attr("height", positionRuler.bbox.height + (ypadding*2))
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;
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@ -425,6 +426,13 @@
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return gantt;
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}
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gantt.view_height = function(value) {
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if (!arguments.length)
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return view_height;
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view_height = +value;
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return gantt;
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}
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gantt.selector = function(value) {
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if (!arguments.length)
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return selector;
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@ -444,12 +452,18 @@
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return data;
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}
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gantt.destroy = function() {
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tip.destroy();
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d3.select(selector).selectAll("svg").remove();
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}
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// constructor
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// Config
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var margin = { top: 20, right: 40, bottom: 20, left: 200, footer: 100 },
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var margin = { top: 0, right: 30, bottom: 20, left: 150 },
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height = document.body.clientHeight - margin.top - margin.bottom - 5,
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width = document.body.clientWidth - margin.right - margin.left - 5,
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view_height = window.innerHeight,
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selector = 'body',
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timeDomainStart = 0,
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timeDomainEnd = 1000,
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