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delete.go
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delete.go
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package query
import (
"bytes"
"encoding/json"
"github.com/opensearch-project/opensearch-go/v2"
"github.com/opensearch-project/opensearch-go/v2/opensearchapi"
)
// DeleteRequest represents a request to ElasticSearch's Delete By Query API,
// described in
// https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-delete-by-query.html
type DeleteRequest struct {
index []string
query Mappable
}
// Delete creates a new DeleteRequest object, to be filled via method chaining.
func Delete() *DeleteRequest {
return &DeleteRequest{}
}
// Index sets the index names for the request
func (req *DeleteRequest) Index(index ...string) *DeleteRequest {
req.index = index
return req
}
// Query sets a query for the request.
func (req *DeleteRequest) Query(q Mappable) *DeleteRequest {
req.query = q
return req
}
// Run executes the request using the provided ElasticSearch client.
func (req *DeleteRequest) Run(
api *opensearch.Client,
o ...func(*opensearchapi.DeleteByQueryRequest),
) (res *opensearchapi.Response, err error) {
return req.RunDelete(api.DeleteByQuery, o...)
}
// RunDelete is the same as the Run method, except that it accepts a value of
// type esapi.DeleteByQuery (usually this is the DeleteByQuery field of an
// elasticsearch.Client object). Since the ElasticSearch client does not provide
// an interface type for its API (which would allow implementation of mock
// clients), this provides a workaround. The Delete function in the ES client is
// actually a field of a function type.
func (req *DeleteRequest) RunDelete(
del opensearchapi.DeleteByQuery,
o ...func(*opensearchapi.DeleteByQueryRequest),
) (res *opensearchapi.Response, err error) {
var b bytes.Buffer
err = json.NewEncoder(&b).Encode(map[string]interface{}{
"query": req.query.Map(),
})
if err != nil {
return nil, err
}
return del(req.index, &b, o...)
}