mirror of https://github.com/go-gitea/gitea.git
113 lines
3.0 KiB
Go
113 lines
3.0 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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// ScriptedMetricAggregation is a a metric aggregation that executes using scripts to provide a metric output.
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//
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// See: https://www.elastic.co/guide/en/elasticsearch/reference/7.0/search-aggregations-metrics-scripted-metric-aggregation.html
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type ScriptedMetricAggregation struct {
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initScript *Script
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mapScript *Script
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combineScript *Script
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reduceScript *Script
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params map[string]interface{}
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meta map[string]interface{}
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}
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func NewScriptedMetricAggregation() *ScriptedMetricAggregation {
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a := &ScriptedMetricAggregation{}
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return a
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}
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func (a *ScriptedMetricAggregation) InitScript(script *Script) *ScriptedMetricAggregation {
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a.initScript = script
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return a
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}
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func (a *ScriptedMetricAggregation) MapScript(script *Script) *ScriptedMetricAggregation {
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a.mapScript = script
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return a
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}
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func (a *ScriptedMetricAggregation) CombineScript(script *Script) *ScriptedMetricAggregation {
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a.combineScript = script
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return a
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}
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func (a *ScriptedMetricAggregation) ReduceScript(script *Script) *ScriptedMetricAggregation {
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a.reduceScript = script
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return a
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}
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func (a *ScriptedMetricAggregation) Params(params map[string]interface{}) *ScriptedMetricAggregation {
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a.params = params
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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 *ScriptedMetricAggregation) Meta(metaData map[string]interface{}) *ScriptedMetricAggregation {
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a.meta = metaData
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return a
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}
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func (a *ScriptedMetricAggregation) Source() (interface{}, error) {
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// Example:
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// {
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// "aggs" : {
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// "magic_script" : { "scripted_metric" : {
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// "init_script" : "state.transactions = []",
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// "map_script" : "state.transactions.add(doc.type.value == 'sale' ? doc.amount.value : -1 * doc.amount.value)",
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// "combine_script" : "double profit = 0; for (t in state.transactions) { profit += t } return profit",
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// "reduce_script" : "double profit = 0; for (a in states) { profit += a } return profit"
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// } }
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// }
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// }
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// This method returns only the { "scripted_metric" : { ... } } part.
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source := make(map[string]interface{})
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opts := make(map[string]interface{})
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source["scripted_metric"] = opts
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if a.initScript != nil {
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src, err := a.initScript.Source()
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if err != nil {
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return nil, err
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}
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opts["init_script"] = src
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}
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if a.mapScript != nil {
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src, err := a.mapScript.Source()
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if err != nil {
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return nil, err
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}
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opts["map_script"] = src
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}
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if a.combineScript != nil {
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src, err := a.combineScript.Source()
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if err != nil {
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return nil, err
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}
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opts["combine_script"] = src
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}
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if a.reduceScript != nil {
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src, err := a.reduceScript.Source()
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if err != nil {
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return nil, err
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}
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opts["reduce_script"] = src
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}
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if a.params != nil && len(a.params) > 0 {
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opts["params"] = a.params
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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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