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chore: generate tag data source (#5)
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# SystemLink Tag data source | ||
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This is a plugin for the Tag Service. It allows you to: | ||
- Populate a Stat, Gauge, table, or other panel with the current value, min, max, average values, of a tag. The tag datatype may be numeric or string. |
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import { | ||
DataQueryRequest, | ||
DataQueryResponse, | ||
DataSourceApi, | ||
DataSourceInstanceSettings, | ||
MutableDataFrame, | ||
FieldType, | ||
} from '@grafana/data'; | ||
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import { TestingStatus, getBackendSrv } from '@grafana/runtime'; | ||
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import { TagQuery } from './types'; | ||
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export class TagDataSource extends DataSourceApi<TagQuery> { | ||
baseUrl: string; | ||
constructor(private instanceSettings: DataSourceInstanceSettings) { | ||
super(instanceSettings); | ||
// TODO: set base path of the service | ||
this.baseUrl = this.instanceSettings.url + '/nifoo/v2'; | ||
} | ||
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async query(options: DataQueryRequest<TagQuery>): Promise<DataQueryResponse> { | ||
const { range } = options; | ||
const from = range!.from.valueOf(); | ||
const to = range!.to.valueOf(); | ||
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// Return a constant for each query. | ||
const data = options.targets.map((target) => { | ||
return new MutableDataFrame({ | ||
refId: target.refId, | ||
fields: [ | ||
{ name: 'Time', values: [from, to], type: FieldType.time }, | ||
{ name: 'Value', values: [target.constant, target.constant], type: FieldType.number }, | ||
], | ||
}); | ||
}); | ||
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return { data }; | ||
} | ||
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async testDatasource(): Promise<TestingStatus> { | ||
// TODO: Implement a health and authentication check | ||
await getBackendSrv().get(this.baseUrl + '/bar'); | ||
return { status: 'success', message: 'Data source connected and authentication successful!' }; | ||
} | ||
} |
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import React, { ChangeEvent } from 'react'; | ||
import { InlineField, Input } from '@grafana/ui'; | ||
import { QueryEditorProps } from '@grafana/data'; | ||
import { TagDataSource } from '../TagDataSource'; | ||
import { TagQuery } from '../types'; | ||
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type Props = QueryEditorProps<TagDataSource, TagQuery>; | ||
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export function TagQueryEditor({ query, onChange, onRunQuery }: Props) { | ||
const onQueryTextChange = (event: ChangeEvent<HTMLInputElement>) => { | ||
onChange({ ...query, queryText: event.target.value }); | ||
}; | ||
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const onConstantChange = (event: ChangeEvent<HTMLInputElement>) => { | ||
onChange({ ...query, constant: parseFloat(event.target.value) }); | ||
// executes the query | ||
onRunQuery(); | ||
}; | ||
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const { queryText, constant } = query; | ||
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return ( | ||
<div className="gf-form"> | ||
<InlineField label="Constant"> | ||
<Input onChange={onConstantChange} value={constant} width={8} type="number" step="0.1" /> | ||
</InlineField> | ||
<InlineField label="Query Text" labelWidth={16} tooltip="Not used yet"> | ||
<Input onChange={onQueryTextChange} value={queryText || ''} /> | ||
</InlineField> | ||
</div> | ||
); | ||
} |
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import { DataSourcePlugin } from '@grafana/data'; | ||
import { TagDataSource } from './TagDataSource'; | ||
import { TagQueryEditor } from './components/TagQueryEditor'; | ||
import { HttpConfigEditor } from 'core/HttpConfigEditor'; | ||
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export const plugin = new DataSourcePlugin(TagDataSource) | ||
.setConfigEditor(HttpConfigEditor) | ||
.setQueryEditor(TagQueryEditor); |
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{ | ||
"type": "datasource", | ||
"name": "SystemLink Tags", | ||
"id": "ni-sltag-datasource", | ||
"metrics": true, | ||
"info": { | ||
"author": { | ||
"name": "NI" | ||
}, | ||
"logos": { | ||
"small": "img/logo-ni.svg", | ||
"large": "img/logo-ni.svg" | ||
} | ||
} | ||
} |
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import { DataQuery } from '@grafana/schema' | ||
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export interface TagQuery extends DataQuery { | ||
queryText?: string; | ||
constant: number; | ||
} |