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Prometheus: Fix ad-hoc filters (#66521)

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* refactor label names back to getTagKeys to fulfill contract with parent class required for ad-hoc functionality
This commit is contained in:
Galen Kistler
2023-04-13 15:05:20 -05:00
committed by GitHub
parent d208324331
commit 4a7f27489e
5 changed files with 17 additions and 5 deletions
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2
public/app/plugins/datasource/prometheus/components/VariableQueryEditor.tsx
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@@ -72,7 +72,7 @@ export const PromVariableQueryEditor = ({ onChange, query, datasource }: Props)
return;
}
datasource.getLabelNames().then((labelNames: Array<{ text: string }>) => {
datasource.getTagKeys().then((labelNames: Array<{ text: string }>) => {
setLabelOptions(labelNames.map(({ text }) => ({ label: text, value: text })));
});
}, [datasource, qryType]);

12
public/app/plugins/datasource/prometheus/datasource.test.ts
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@@ -94,6 +94,16 @@ describe('PrometheusDatasource', () => {
ds = new PrometheusDatasource(instanceSettings, templateSrvStub, timeSrvStub);
});
// Some functions are required by the parent datasource class to provide functionality such as ad-hoc filters, which requires the definition of the getTagKeys, and getTagValues functions
describe('Datasource contract', () => {
it('has function called getTagKeys', () => {
expect(Object.getOwnPropertyNames(Object.getPrototypeOf(ds))).toContain('getTagKeys');
});
it('has function called getTagValues', () => {
expect(Object.getOwnPropertyNames(Object.getPrototypeOf(ds))).toContain('getTagValues');
});
});
describe('Query', () => {
it('returns empty array when no queries', async () => {
await expect(ds.query(createDataRequest([]))).toEmitValuesWith((response) => {
@@ -167,7 +177,7 @@ describe('PrometheusDatasource', () => {
).rejects.toMatchObject({
message: expect.stringMatching('Browser access'),
});
await expect(directDs.getLabelNames()).rejects.toMatchObject({
await expect(directDs.getTagKeys()).rejects.toMatchObject({
message: expect.stringMatching('Browser access'),
});
await expect(directDs.getTagValues()).rejects.toMatchObject({

4
public/app/plugins/datasource/prometheus/datasource.tsx
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@@ -934,10 +934,11 @@ export class PrometheusDatasource
);
}
// By implementing getTagKeys and getTagValues we add ad-hoc filters functionality
// this is used to get label keys, a.k.a label names
// it is used in metric_find_query.ts
// and in Tempo here grafana/public/app/plugins/datasource/tempo/QueryEditor/ServiceGraphSection.tsx
async getLabelNames(options?: any) {
async getTagKeys(options?: any) {
if (options?.series) {
// Get tags for the provided series only
const seriesLabels: Array<Record<string, string[]>> = await Promise.all(
@@ -956,6 +957,7 @@ export class PrometheusDatasource
}
}
// By implementing getTagKeys and getTagValues we add ad-hoc filters functionality
async getTagValues(options: { key?: string } = {}) {
const params = this.getTimeRangeParams();
const result = await this.metadataRequest(`/api/v1/label/${options.key}/values`, params);

2
public/app/plugins/datasource/prometheus/metric_find_query.ts
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@@ -25,7 +25,7 @@ export default class PrometheusMetricFindQuery {
const queryResultRegex = /^query_result\((.+)\)\s*$/;
const labelNamesQuery = this.query.match(labelNamesRegex);
if (labelNamesQuery) {
return this.datasource.getLabelNames();
return this.datasource.getTagKeys();
}
const labelValuesQuery = this.query.match(labelValuesRegex);