145 lines
3.7 KiB
Go
145 lines
3.7 KiB
Go
// Copyright 2012-present Oliver Eilhard. All rights reserved.
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// Use of this source code is governed by a MIT-license.
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// See http://olivere.mit-license.org/license.txt for details.
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package elastic
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// PercentilesAggregation is a multi-value metrics aggregation
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// that calculates one or more percentiles over numeric values
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// extracted from the aggregated documents. These values can
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// be extracted either from specific numeric fields in the documents,
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// or be generated by a provided script.
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//
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// See: https://www.elastic.co/guide/en/elasticsearch/reference/6.2/search-aggregations-metrics-percentile-aggregation.html
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type PercentilesAggregation struct {
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field string
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script *Script
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format string
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missing interface{}
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subAggregations map[string]Aggregation
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meta map[string]interface{}
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percentiles []float64
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compression *float64
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estimator string
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}
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func NewPercentilesAggregation() *PercentilesAggregation {
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return &PercentilesAggregation{
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subAggregations: make(map[string]Aggregation),
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percentiles: make([]float64, 0),
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}
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}
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func (a *PercentilesAggregation) Field(field string) *PercentilesAggregation {
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a.field = field
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return a
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}
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func (a *PercentilesAggregation) Script(script *Script) *PercentilesAggregation {
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a.script = script
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return a
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}
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func (a *PercentilesAggregation) Format(format string) *PercentilesAggregation {
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a.format = format
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return a
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}
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func (a *PercentilesAggregation) Missing(missing interface{}) *PercentilesAggregation {
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a.missing = missing
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return a
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}
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func (a *PercentilesAggregation) SubAggregation(name string, subAggregation Aggregation) *PercentilesAggregation {
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a.subAggregations[name] = subAggregation
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return a
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}
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// Meta sets the meta data to be included in the aggregation response.
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func (a *PercentilesAggregation) Meta(metaData map[string]interface{}) *PercentilesAggregation {
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a.meta = metaData
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return a
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}
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func (a *PercentilesAggregation) Percentiles(percentiles ...float64) *PercentilesAggregation {
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a.percentiles = append(a.percentiles, percentiles...)
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return a
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}
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func (a *PercentilesAggregation) Compression(compression float64) *PercentilesAggregation {
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a.compression = &compression
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return a
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}
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func (a *PercentilesAggregation) Estimator(estimator string) *PercentilesAggregation {
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a.estimator = estimator
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return a
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}
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func (a *PercentilesAggregation) Source() (interface{}, error) {
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// Example:
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// {
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// "aggs" : {
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// "load_time_outlier" : {
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// "percentiles" : {
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// "field" : "load_time"
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// }
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// }
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// }
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// }
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// This method returns only the
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// { "percentiles" : { "field" : "load_time" } }
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// part.
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source := make(map[string]interface{})
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opts := make(map[string]interface{})
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source["percentiles"] = opts
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// ValuesSourceAggregationBuilder
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if a.field != "" {
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opts["field"] = a.field
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}
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if a.script != nil {
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src, err := a.script.Source()
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if err != nil {
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return nil, err
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}
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opts["script"] = src
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}
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if a.format != "" {
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opts["format"] = a.format
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}
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if a.missing != nil {
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opts["missing"] = a.missing
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}
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if len(a.percentiles) > 0 {
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opts["percents"] = a.percentiles
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}
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if a.compression != nil {
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opts["compression"] = *a.compression
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}
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if a.estimator != "" {
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opts["estimator"] = a.estimator
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}
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// AggregationBuilder (SubAggregations)
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if len(a.subAggregations) > 0 {
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aggsMap := make(map[string]interface{})
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source["aggregations"] = aggsMap
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for name, aggregate := range a.subAggregations {
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src, err := aggregate.Source()
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if err != nil {
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return nil, err
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}
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aggsMap[name] = src
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}
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}
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// Add Meta data if available
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if len(a.meta) > 0 {
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source["meta"] = a.meta
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}
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return source, nil
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}
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