Add `access` format support for Elasticsearch notification target (#4006)
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.
2017-03-31 23:11:27 +02:00
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// Copyright 2012-present Oliver Eilhard. All rights reserved.
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2016-07-24 07:51:12 +02:00
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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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// BucketSelectorAggregation is a parent pipeline aggregation which
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// determines whether the current bucket will be retained in the parent
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// multi-bucket aggregation. The specific metric must be numeric and
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// the script must return a boolean value. If the script language is
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// expression then a numeric return value is permitted. In this case 0.0
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// will be evaluated as false and all other values will evaluate to true.
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//
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// For more details, see
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Add `access` format support for Elasticsearch notification target (#4006)
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.
2017-03-31 23:11:27 +02:00
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// https://www.elastic.co/guide/en/elasticsearch/reference/5.2/search-aggregations-pipeline-bucket-selector-aggregation.html
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2016-07-24 07:51:12 +02:00
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type BucketSelectorAggregation struct {
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format string
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gapPolicy string
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script *Script
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subAggregations map[string]Aggregation
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meta map[string]interface{}
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bucketsPathsMap map[string]string
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}
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// NewBucketSelectorAggregation creates and initializes a new BucketSelectorAggregation.
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func NewBucketSelectorAggregation() *BucketSelectorAggregation {
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return &BucketSelectorAggregation{
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subAggregations: make(map[string]Aggregation),
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bucketsPathsMap: make(map[string]string),
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}
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}
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func (a *BucketSelectorAggregation) Format(format string) *BucketSelectorAggregation {
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a.format = format
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return a
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}
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// GapPolicy defines what should be done when a gap in the series is discovered.
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// Valid values include "insert_zeros" or "skip". Default is "insert_zeros".
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func (a *BucketSelectorAggregation) GapPolicy(gapPolicy string) *BucketSelectorAggregation {
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a.gapPolicy = gapPolicy
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return a
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}
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// GapInsertZeros inserts zeros for gaps in the series.
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func (a *BucketSelectorAggregation) GapInsertZeros() *BucketSelectorAggregation {
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a.gapPolicy = "insert_zeros"
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return a
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}
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// GapSkip skips gaps in the series.
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func (a *BucketSelectorAggregation) GapSkip() *BucketSelectorAggregation {
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a.gapPolicy = "skip"
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return a
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}
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// Script is the script to run.
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func (a *BucketSelectorAggregation) Script(script *Script) *BucketSelectorAggregation {
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a.script = script
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return a
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}
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// SubAggregation adds a sub-aggregation to this aggregation.
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func (a *BucketSelectorAggregation) SubAggregation(name string, subAggregation Aggregation) *BucketSelectorAggregation {
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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 *BucketSelectorAggregation) Meta(metaData map[string]interface{}) *BucketSelectorAggregation {
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a.meta = metaData
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return a
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}
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// BucketsPathsMap sets the paths to the buckets to use for this pipeline aggregator.
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func (a *BucketSelectorAggregation) BucketsPathsMap(bucketsPathsMap map[string]string) *BucketSelectorAggregation {
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a.bucketsPathsMap = bucketsPathsMap
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return a
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}
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// AddBucketsPath adds a bucket path to use for this pipeline aggregator.
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func (a *BucketSelectorAggregation) AddBucketsPath(name, path string) *BucketSelectorAggregation {
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if a.bucketsPathsMap == nil {
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a.bucketsPathsMap = make(map[string]string)
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}
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a.bucketsPathsMap[name] = path
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return a
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}
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func (a *BucketSelectorAggregation) Source() (interface{}, error) {
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source := make(map[string]interface{})
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params := make(map[string]interface{})
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source["bucket_selector"] = params
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if a.format != "" {
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params["format"] = a.format
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}
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if a.gapPolicy != "" {
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params["gap_policy"] = a.gapPolicy
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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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params["script"] = src
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}
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// Add buckets paths
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if len(a.bucketsPathsMap) > 0 {
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params["buckets_path"] = a.bucketsPathsMap
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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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