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86
x-pack/legacy/plugins/lens/public/indexpattern_plugin/auto_date.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| /* | ||
| * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one | ||
| * or more contributor license agreements. Licensed under the Elastic License; | ||
| * you may not use this file except in compliance with the Elastic License. | ||
| */ | ||
|
|
||
| import { TimeBuckets } from 'ui/time_buckets'; | ||
| import dateMath from '@elastic/datemath'; | ||
| import { | ||
| ExpressionFunction, | ||
| KibanaContext, | ||
| } from '../../../../../../src/plugins/expressions/common'; | ||
|
|
||
| interface LensAutoDateProps { | ||
| aggConfigs: string; | ||
| } | ||
|
|
||
| export function getAutoInterval(ctx?: KibanaContext | null) { | ||
| if (!ctx || !ctx.timeRange) { | ||
| return; | ||
| } | ||
|
|
||
| const { timeRange } = ctx; | ||
| const buckets = new TimeBuckets(); | ||
| buckets.setInterval('auto'); | ||
| buckets.setBounds({ | ||
| min: dateMath.parse(timeRange.from), | ||
| max: dateMath.parse(timeRange.to, { roundUp: true }), | ||
| }); | ||
|
|
||
| return buckets.getInterval(); | ||
| } | ||
|
|
||
| /** | ||
| * Convert all 'auto' date histograms into a concrete value (e.g. 2h). | ||
| * This allows us to support 'auto' on all date fields, and opens the | ||
| * door to future customizations (e.g. adjusting the level of detail, etc). | ||
| */ | ||
| export const autoDate: ExpressionFunction< | ||
| 'lens_auto_date', | ||
| KibanaContext | null, | ||
| LensAutoDateProps, | ||
| string | ||
| > = { | ||
| name: 'lens_auto_date', | ||
| aliases: [], | ||
| help: '', | ||
| context: { | ||
| types: ['kibana_context', 'null'], | ||
| }, | ||
| args: { | ||
| aggConfigs: { | ||
| types: ['string'], | ||
| default: '""', | ||
| help: '', | ||
| }, | ||
| }, | ||
| fn(ctx: KibanaContext, args: LensAutoDateProps) { | ||
| const interval = getAutoInterval(ctx); | ||
|
|
||
| if (!interval) { | ||
| return args.aggConfigs; | ||
| } | ||
|
|
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| const configs = JSON.parse(args.aggConfigs) as Array<{ | ||
| type: string; | ||
| params: { interval: string }; | ||
| }>; | ||
|
|
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| const updatedConfigs = configs.map(c => { | ||
| if (c.type !== 'date_histogram' || !c.params || c.params.interval !== 'auto') { | ||
| return c; | ||
| } | ||
|
|
||
| return { | ||
| ...c, | ||
| params: { | ||
| ...c.params, | ||
| interval: interval.expression, | ||
| }, | ||
| }; | ||
| }); | ||
|
|
||
| return JSON.stringify(updatedConfigs); | ||
| }, | ||
| }; |
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