This change adds `access` format support for notifications to a Elasticsearch server, and it refactors `namespace` format support. In the case of `access` format, for each event in Minio, a JSON document is inserted into Elasticsearch with its timestamp set to the event's timestamp, and with the ID generated automatically by elasticsearch. No events are modified or deleted in this mode. In the case of `namespace` format, for each event in Minio, a JSON document is keyed together by the bucket and object name is updated in Elasticsearch. In the case of an object being created or over-written in Minio, a new document or an existing document is inserted into the Elasticsearch index. If an object is deleted in Minio, the corresponding document is deleted from the Elasticsearch index. Additionally, this change upgrades Elasticsearch support to the 5.x series. This is a breaking change, and users of previous elasticsearch versions should upgrade. Also updates documentation on Elasticsearch notification target usage and has a link to an elasticsearch upgrade guide. This is the last patch that finally resolves #3928.
233 lines
6.2 KiB
Go
233 lines
6.2 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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import (
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"time"
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)
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// RangeAggregation is a multi-bucket value source based aggregation that
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// enables the user to define a set of ranges - each representing a bucket.
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// During the aggregation process, the values extracted from each document
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// will be checked against each bucket range and "bucket" the
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// relevant/matching document. Note that this aggregration includes the
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// from value and excludes the to value for each range.
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// See: https://www.elastic.co/guide/en/elasticsearch/reference/5.2/search-aggregations-bucket-range-aggregation.html
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type RangeAggregation struct {
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field string
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script *Script
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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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keyed *bool
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unmapped *bool
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entries []rangeAggregationEntry
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}
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type rangeAggregationEntry struct {
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Key string
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From interface{}
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To interface{}
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}
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func NewRangeAggregation() *RangeAggregation {
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return &RangeAggregation{
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subAggregations: make(map[string]Aggregation),
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entries: make([]rangeAggregationEntry, 0),
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}
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}
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func (a *RangeAggregation) Field(field string) *RangeAggregation {
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a.field = field
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return a
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}
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func (a *RangeAggregation) Script(script *Script) *RangeAggregation {
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a.script = script
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return a
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}
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// Missing configures the value to use when documents miss a value.
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func (a *RangeAggregation) Missing(missing interface{}) *RangeAggregation {
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a.missing = missing
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return a
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}
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func (a *RangeAggregation) SubAggregation(name string, subAggregation Aggregation) *RangeAggregation {
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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 *RangeAggregation) Meta(metaData map[string]interface{}) *RangeAggregation {
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a.meta = metaData
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return a
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}
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func (a *RangeAggregation) Keyed(keyed bool) *RangeAggregation {
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a.keyed = &keyed
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return a
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}
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func (a *RangeAggregation) Unmapped(unmapped bool) *RangeAggregation {
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a.unmapped = &unmapped
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return a
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}
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func (a *RangeAggregation) AddRange(from, to interface{}) *RangeAggregation {
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a.entries = append(a.entries, rangeAggregationEntry{From: from, To: to})
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return a
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}
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func (a *RangeAggregation) AddRangeWithKey(key string, from, to interface{}) *RangeAggregation {
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a.entries = append(a.entries, rangeAggregationEntry{Key: key, From: from, To: to})
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return a
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}
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func (a *RangeAggregation) AddUnboundedTo(from interface{}) *RangeAggregation {
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a.entries = append(a.entries, rangeAggregationEntry{From: from, To: nil})
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return a
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}
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func (a *RangeAggregation) AddUnboundedToWithKey(key string, from interface{}) *RangeAggregation {
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a.entries = append(a.entries, rangeAggregationEntry{Key: key, From: from, To: nil})
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return a
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}
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func (a *RangeAggregation) AddUnboundedFrom(to interface{}) *RangeAggregation {
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a.entries = append(a.entries, rangeAggregationEntry{From: nil, To: to})
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return a
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}
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func (a *RangeAggregation) AddUnboundedFromWithKey(key string, to interface{}) *RangeAggregation {
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a.entries = append(a.entries, rangeAggregationEntry{Key: key, From: nil, To: to})
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return a
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}
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func (a *RangeAggregation) Lt(to interface{}) *RangeAggregation {
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a.entries = append(a.entries, rangeAggregationEntry{From: nil, To: to})
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return a
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}
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func (a *RangeAggregation) LtWithKey(key string, to interface{}) *RangeAggregation {
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a.entries = append(a.entries, rangeAggregationEntry{Key: key, From: nil, To: to})
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return a
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}
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func (a *RangeAggregation) Between(from, to interface{}) *RangeAggregation {
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a.entries = append(a.entries, rangeAggregationEntry{From: from, To: to})
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return a
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}
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func (a *RangeAggregation) BetweenWithKey(key string, from, to interface{}) *RangeAggregation {
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a.entries = append(a.entries, rangeAggregationEntry{Key: key, From: from, To: to})
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return a
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}
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func (a *RangeAggregation) Gt(from interface{}) *RangeAggregation {
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a.entries = append(a.entries, rangeAggregationEntry{From: from, To: nil})
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return a
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}
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func (a *RangeAggregation) GtWithKey(key string, from interface{}) *RangeAggregation {
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a.entries = append(a.entries, rangeAggregationEntry{Key: key, From: from, To: nil})
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return a
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}
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func (a *RangeAggregation) Source() (interface{}, error) {
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// Example:
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// {
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// "aggs" : {
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// "price_ranges" : {
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// "range" : {
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// "field" : "price",
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// "ranges" : [
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// { "to" : 50 },
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// { "from" : 50, "to" : 100 },
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// { "from" : 100 }
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// ]
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// }
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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 { "range" : { ... } } part.
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source := make(map[string]interface{})
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opts := make(map[string]interface{})
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source["range"] = 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.missing != nil {
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opts["missing"] = a.missing
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}
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if a.keyed != nil {
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opts["keyed"] = *a.keyed
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}
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if a.unmapped != nil {
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opts["unmapped"] = *a.unmapped
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}
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var ranges []interface{}
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for _, ent := range a.entries {
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r := make(map[string]interface{})
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if ent.Key != "" {
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r["key"] = ent.Key
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}
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if ent.From != nil {
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switch from := ent.From.(type) {
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case int, int16, int32, int64, float32, float64:
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r["from"] = from
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case time.Time:
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r["from"] = from.Format(time.RFC3339)
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case string:
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r["from"] = from
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}
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}
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if ent.To != nil {
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switch to := ent.To.(type) {
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case int, int16, int32, int64, float32, float64:
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r["to"] = to
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case time.Time:
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r["to"] = to.Format(time.RFC3339)
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case string:
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r["to"] = to
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}
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}
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ranges = append(ranges, r)
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}
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opts["ranges"] = ranges
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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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