Tracing: Add ability to write trace to metrics query (#48824)

* Tracing: Add ability to write trace to metrics query

docs/sources/datasources/jaeger.md

@@ -40,6 +40,15 @@ This is a configuration for the [trace to logs feature]({{< relref "../explore/t
 
 ![Trace to logs settings](/static/img/docs/explore/trace-to-logs-settings-8-2.png 'Screenshot of the trace to logs settings')
 
+### Trace to metrics
+
+> **Note:** This feature is behind the `traceToMetrics` feature toggle.
+
+To configure trace to metrics, select the target Prometheus data source and enter the desired query.
+
+-- **Data source -** Target data source.
+-- **Query -** Query that runs when navigating from a trace to the metrics data source.
+
 ### Node Graph
 
 This is a configuration for the beta Node Graph visualization. The Node Graph is shown after the trace view is loaded and is disabled by default.

docs/sources/datasources/tempo.md

@@ -39,6 +39,15 @@ This is a configuration for the [trace to logs feature]({{< relref "../explore/t
 
 {{< figure src="/static/img/docs/explore/traces-to-logs-settings-8-2.png" class="docs-image--no-shadow" caption="Screenshot of the trace to logs settings" >}}
 
+### Trace to metrics
+
+> **Note:** This feature is behind the `traceToMetrics` feature toggle.
+
+To configure trace to metrics, select the target Prometheus data source and enter the desired query.
+
+-- **Data source -** Target data source.
+-- **Query -** Query that runs when navigating from a trace to the metrics data source.
+
 ### Service Graph
 
 This is a configuration for the Service Graph feature.

docs/sources/datasources/zipkin.md

@@ -40,6 +40,15 @@ This is a configuration for the [trace to logs feature]({{< relref "../explore/t
 
 ![Trace to logs settings](/static/img/docs/explore/trace-to-logs-settings-8-2.png 'Screenshot of the trace to logs settings')
 
+### Trace to metrics
+
+> **Note:** This feature is behind the `traceToMetrics` feature toggle.
+
+To configure trace to metrics, select the target Prometheus data source and enter the desired query.
+
+-- **Data source -** Target data source.
+-- **Query -** Query that runs when navigating from a trace to the metrics data source.
+
 ### Node Graph
 
 This is a configuration for the beta Node Graph visualization. The Node Graph is shown after the trace view is loaded and is disabled by default.

public/app/core/components/TraceToMetrics/TraceToMetricsSettings.tsx

@@ -8,10 +8,11 @@ import {
   updateDatasourcePluginJsonDataOption,
 } from '@grafana/data';
 import { DataSourcePicker } from '@grafana/runtime';
-import { Button, InlineField, InlineFieldRow, useStyles } from '@grafana/ui';
+import { Button, InlineField, InlineFieldRow, Input, useStyles } from '@grafana/ui';
 
 export interface TraceToMetricsOptions {
   datasourceUid?: string;
+  query: string;
 }
 
 export interface TraceToMetricsData extends DataSourceJsonData {
@@ -49,10 +50,10 @@ export function TraceToMetricsSettings({ options, onOptionsChange }: Props) {
         </InlineField>
         {options.jsonData.tracesToMetrics?.datasourceUid ? (
           <Button
-            type={'button'}
-            variant={'secondary'}
-            size={'sm'}
-            fill={'text'}
+            type="button"
+            variant="secondary"
+            size="sm"
+            fill="text"
             onClick={() => {
               updateDatasourcePluginJsonDataOption({ onOptionsChange, options }, 'tracesToMetrics', {
                 ...options.jsonData.tracesToMetrics,
@@ -64,6 +65,28 @@ export function TraceToMetricsSettings({ options, onOptionsChange }: Props) {
           </Button>
         ) : null}
       </InlineFieldRow>
+
+      <InlineFieldRow>
+        <InlineField
+          label="Query"
+          labelWidth={26}
+          tooltip="The Prometheus query that will run when navigating from a trace to metrics"
+          grow
+        >
+          <Input
+            label="Query"
+            type="text"
+            allowFullScreen
+            value={options.jsonData.tracesToMetrics?.query}
+            onChange={(e) => {
+              updateDatasourcePluginJsonDataOption({ onOptionsChange, options }, 'tracesToMetrics', {
+                ...options.jsonData.tracesToMetrics,
+                query: e.currentTarget.value,
+              });
+            }}
+          />
+        </InlineField>
+      </InlineFieldRow>
     </div>
   );
 }

public/app/features/explore/TraceView/createSpanLink.test.ts

@@ -1,6 +1,7 @@
 import { DataSourceInstanceSettings, MutableDataFrame } from '@grafana/data';
 import { setDataSourceSrv, setTemplateSrv } from '@grafana/runtime';
 import { TraceSpan } from '@jaegertracing/jaeger-ui-components';
+import { TraceToMetricsOptions } from 'app/core/components/TraceToMetrics/TraceToMetricsSettings';
 import { DatasourceSrv } from 'app/features/plugins/datasource_srv';
 
 import { TraceToLogsOptions } from '../../../core/components/TraceToLogs/TraceToLogsSettings';
@@ -399,6 +400,7 @@ describe('createSpanLinkFactory', () => {
         splitOpenFn,
         traceToMetricsOptions: {
           datasourceUid: 'prom1',
+          query: 'customQuery',
         },
       });
       expect(createLink).toBeDefined();
@@ -406,6 +408,27 @@ describe('createSpanLinkFactory', () => {
       const links = createLink!(createTraceSpan());
       const linkDef = links?.metricLinks?.[0];
 
+      expect(linkDef).toBeDefined();
+      expect(linkDef!.href).toBe(
+        `/explore?left=${encodeURIComponent(
+          '{"range":{"from":"2020-10-14T01:00:00.000Z","to":"2020-10-14T01:00:01.000Z"},"datasource":"prom1","queries":[{"expr":"customQuery","refId":""}],"panelsState":{}}'
+        )}`
+      );
+    });
+
+    it('uses default query if no query specified', () => {
+      const splitOpenFn = jest.fn();
+      const createLink = createSpanLinkFactory({
+        splitOpenFn,
+        traceToMetricsOptions: {
+          datasourceUid: 'prom1',
+        } as TraceToMetricsOptions,
+      });
+      expect(createLink).toBeDefined();
+
+      const links = createLink!(createTraceSpan());
+      const linkDef = links?.metricLinks?.[0];
+
       expect(linkDef).toBeDefined();
       expect(linkDef!.href).toBe(
         `/explore?left=${encodeURIComponent(

public/app/features/explore/TraceView/createSpanLink.tsx

@@ -150,6 +150,7 @@ function legacyCreateSpanLinkFactory(
 
     // Get metrics links
     if (metricsDataSourceSettings && traceToMetricsOptions) {
+      const defaultQuery = `histogram_quantile(0.5, sum(rate(tempo_spanmetrics_latency_bucket{operation="${span.operationName}"}[5m])) by (le))`;
       const dataLink: DataLink<PromQuery> = {
         title: metricsDataSourceSettings.name,
         url: '',
@@ -157,7 +158,7 @@ function legacyCreateSpanLinkFactory(
           datasourceUid: metricsDataSourceSettings.uid,
           datasourceName: metricsDataSourceSettings.name,
           query: {
-            expr: `histogram_quantile(0.5, sum(rate(tempo_spanmetrics_latency_bucket{operation="${span.operationName}"}[5m])) by (le))`,
+            expr: traceToMetricsOptions.query ?? defaultQuery,
             refId: '',
           },
         },