1 files changed, 126 insertions, 0 deletions
diff --git a/vendor/gopkg.in/olivere/elastic.v5/search_aggs_bucket_diversified_sampler.go b/vendor/gopkg.in/olivere/elastic.v5/search_aggs_bucket_diversified_sampler.go
new file mode 100644
index 000000000..a70b83a2d
--- /dev/null
+++ b/vendor/gopkg.in/olivere/elastic.v5/search_aggs_bucket_diversified_sampler.go
@@ -0,0 +1,126 @@
+// Copyright 2012-present Oliver Eilhard. All rights reserved.
+// Use of this source code is governed by a MIT-license.
+// See http://olivere.mit-license.org/license.txt for details.
+
+package elastic
+
+// DiversifiedSamplerAggregation Like the ‘sampler` aggregation this is a filtering aggregation used to limit any
+// sub aggregations’ processing to a sample of the top-scoring documents. The diversified_sampler aggregation adds
+// the ability to limit the number of matches that share a common value such as an "author".
+//
+// See: https://www.elastic.co/guide/en/elasticsearch/reference/5.6/search-aggregations-bucket-diversified-sampler-aggregation.html
+type DiversifiedSamplerAggregation struct {
+	subAggregations map[string]Aggregation
+	meta            map[string]interface{}
+	field           string
+	script          *Script
+	shardSize       int
+	maxDocsPerValue int
+	executionHint   string
+}
+
+func NewDiversifiedSamplerAggregation() *DiversifiedSamplerAggregation {
+	return &DiversifiedSamplerAggregation{
+		shardSize:       -1,
+		maxDocsPerValue: -1,
+		subAggregations: make(map[string]Aggregation),
+	}
+}
+
+func (a *DiversifiedSamplerAggregation) SubAggregation(name string, subAggregation Aggregation) *DiversifiedSamplerAggregation {
+	a.subAggregations[name] = subAggregation
+	return a
+}
+
+// Meta sets the meta data to be included in the aggregation response.
+func (a *DiversifiedSamplerAggregation) Meta(metaData map[string]interface{}) *DiversifiedSamplerAggregation {
+	a.meta = metaData
+	return a
+}
+
+// Field on which the aggregation is processed.
+func (a *DiversifiedSamplerAggregation) Field(field string) *DiversifiedSamplerAggregation {
+	a.field = field
+	return a
+}
+
+func (a *DiversifiedSamplerAggregation) Script(script *Script) *DiversifiedSamplerAggregation {
+	a.script = script
+	return a
+}
+
+// ShardSize sets the maximum number of docs returned from each shard.
+func (a *DiversifiedSamplerAggregation) ShardSize(shardSize int) *DiversifiedSamplerAggregation {
+	a.shardSize = shardSize
+	return a
+}
+
+func (a *DiversifiedSamplerAggregation) MaxDocsPerValue(maxDocsPerValue int) *DiversifiedSamplerAggregation {
+	a.maxDocsPerValue = maxDocsPerValue
+	return a
+}
+
+func (a *DiversifiedSamplerAggregation) ExecutionHint(hint string) *DiversifiedSamplerAggregation {
+	a.executionHint = hint
+	return a
+}
+
+func (a *DiversifiedSamplerAggregation) Source() (interface{}, error) {
+	// Example:
+	// {
+	//     "aggs": {
+	//			"my_unbiased_sample": {
+	//				"diversified_sampler": {
+	//					"shard_size": 200,
+	//					"field" : "author"
+	//				}
+	//			}
+	//		}
+	// }
+	//
+	// This method returns only the { "diversified_sampler" : { ... } } part.
+
+	source := make(map[string]interface{})
+	opts := make(map[string]interface{})
+	source["diversified_sampler"] = opts
+
+	if a.field != "" {
+		opts["field"] = a.field
+	}
+	if a.script != nil {
+		src, err := a.script.Source()
+		if err != nil {
+			return nil, err
+		}
+		opts["script"] = src
+	}
+	if a.shardSize >= 0 {
+		opts["shard_size"] = a.shardSize
+	}
+	if a.maxDocsPerValue >= 0 {
+		opts["max_docs_per_value"] = a.maxDocsPerValue
+	}
+	if a.executionHint != "" {
+		opts["execution_hint"] = a.executionHint
+	}
+
+	// AggregationBuilder (SubAggregations)
+	if len(a.subAggregations) > 0 {
+		aggsMap := make(map[string]interface{})
+		source["aggregations"] = aggsMap
+		for name, aggregate := range a.subAggregations {
+			src, err := aggregate.Source()
+			if err != nil {
+				return nil, err
+			}
+			aggsMap[name] = src
+		}
+	}
+
+	// Add Meta data if available
+	if len(a.meta) > 0 {
+		source["meta"] = a.meta
+	}
+
+	return source, nil
+}