Adding upstream version 1.34.4.

Signed-off-by: Daniel Baumann <daniel@debian.org>

plugins/inputs/opensearch_query/aggregation.bucket.go

@@ -0,0 +1,45 @@
+package opensearch_query
+
+import (
+	"errors"
+	"fmt"
+)
+
+type bucketAggregationRequest map[string]*aggregationFunction
+
+func (b bucketAggregationRequest) addAggregation(name, aggType, field string) error {
+	switch aggType {
+	case "terms":
+	default:
+		return fmt.Errorf("aggregation function %q not supported", aggType)
+	}
+
+	b[name] = &aggregationFunction{
+		aggType: aggType,
+		field:   field,
+	}
+
+	return nil
+}
+
+func (b bucketAggregationRequest) addNestedAggregation(name string, a aggregationRequest) {
+	b[name].nested = a
+}
+
+func (b bucketAggregationRequest) bucketSize(name string, size int) error {
+	if size <= 0 {
+		return errors.New("invalid size; must be integer value > 0")
+	}
+
+	if _, ok := b[name]; !ok {
+		return fmt.Errorf("aggregation %q not found", name)
+	}
+
+	b[name].setSize(size)
+
+	return nil
+}
+
+func (b bucketAggregationRequest) missing(name, missing string) {
+	b[name].setMissing(missing)
+}