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// 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
import (
"encoding/json"
"strings"
)
// SearchRequest combines a search request and its
// query details (see SearchSource).
// It is used in combination with MultiSearch.
type SearchRequest struct {
searchType string // default in ES is "query_then_fetch"
indices []string
types []string
routing *string
preference *string
requestCache *bool
ignoreUnavailable *bool
allowNoIndices *bool
expandWildcards string
scroll string
source interface{}
}
// NewSearchRequest creates a new search request.
func NewSearchRequest() *SearchRequest {
return &SearchRequest{}
}
// SearchRequest must be one of "query_then_fetch", "query_and_fetch",
// "scan", "count", "dfs_query_then_fetch", or "dfs_query_and_fetch".
// Use one of the constants defined via SearchType.
func (r *SearchRequest) SearchType(searchType string) *SearchRequest {
r.searchType = searchType
return r
}
func (r *SearchRequest) SearchTypeDfsQueryThenFetch() *SearchRequest {
return r.SearchType("dfs_query_then_fetch")
}
func (r *SearchRequest) SearchTypeDfsQueryAndFetch() *SearchRequest {
return r.SearchType("dfs_query_and_fetch")
}
func (r *SearchRequest) SearchTypeQueryThenFetch() *SearchRequest {
return r.SearchType("query_then_fetch")
}
func (r *SearchRequest) SearchTypeQueryAndFetch() *SearchRequest {
return r.SearchType("query_and_fetch")
}
func (r *SearchRequest) SearchTypeScan() *SearchRequest {
return r.SearchType("scan")
}
func (r *SearchRequest) SearchTypeCount() *SearchRequest {
return r.SearchType("count")
}
func (r *SearchRequest) Index(indices ...string) *SearchRequest {
r.indices = append(r.indices, indices...)
return r
}
func (r *SearchRequest) HasIndices() bool {
return len(r.indices) > 0
}
func (r *SearchRequest) Type(types ...string) *SearchRequest {
r.types = append(r.types, types...)
return r
}
func (r *SearchRequest) Routing(routing string) *SearchRequest {
r.routing = &routing
return r
}
func (r *SearchRequest) Routings(routings ...string) *SearchRequest {
if routings != nil {
routings := strings.Join(routings, ",")
r.routing = &routings
} else {
r.routing = nil
}
return r
}
func (r *SearchRequest) Preference(preference string) *SearchRequest {
r.preference = &preference
return r
}
func (r *SearchRequest) RequestCache(requestCache bool) *SearchRequest {
r.requestCache = &requestCache
return r
}
// IgnoreUnavailable indicates whether specified concrete indices should be
// ignored when unavailable (missing or closed).
func (s *SearchRequest) IgnoreUnavailable(ignoreUnavailable bool) *SearchRequest {
s.ignoreUnavailable = &ignoreUnavailable
return s
}
// AllowNoIndices indicates whether to ignore if a wildcard indices
// expression resolves into no concrete indices. (This includes `_all` string or when no indices have been specified).
func (s *SearchRequest) AllowNoIndices(allowNoIndices bool) *SearchRequest {
s.allowNoIndices = &allowNoIndices
return s
}
// ExpandWildcards indicates whether to expand wildcard expression to
// concrete indices that are open, closed or both.
func (s *SearchRequest) ExpandWildcards(expandWildcards string) *SearchRequest {
s.expandWildcards = expandWildcards
return s
}
func (r *SearchRequest) Scroll(scroll string) *SearchRequest {
r.scroll = scroll
return r
}
func (r *SearchRequest) SearchSource(searchSource *SearchSource) *SearchRequest {
return r.Source(searchSource)
}
func (r *SearchRequest) Source(source interface{}) *SearchRequest {
r.source = source
return r
}
// header is used e.g. by MultiSearch to get information about the search header
// of one SearchRequest.
// See https://www.elastic.co/guide/en/elasticsearch/reference/6.0/search-multi-search.html
func (r *SearchRequest) header() interface{} {
h := make(map[string]interface{})
if r.searchType != "" {
h["search_type"] = r.searchType
}
switch len(r.indices) {
case 0:
case 1:
h["index"] = r.indices[0]
default:
h["indices"] = r.indices
}
switch len(r.types) {
case 0:
case 1:
h["type"] = r.types[0]
default:
h["types"] = r.types
}
if r.routing != nil && *r.routing != "" {
h["routing"] = *r.routing
}
if r.preference != nil && *r.preference != "" {
h["preference"] = *r.preference
}
if r.requestCache != nil {
h["request_cache"] = *r.requestCache
}
if r.ignoreUnavailable != nil {
h["ignore_unavailable"] = *r.ignoreUnavailable
}
if r.allowNoIndices != nil {
h["allow_no_indices"] = *r.allowNoIndices
}
if r.expandWildcards != "" {
h["expand_wildcards"] = r.expandWildcards
}
if r.scroll != "" {
h["scroll"] = r.scroll
}
return h
}
// Body allows to access the search body of the request, as generated by the DSL.
// Notice that Body is read-only. You must not change the request body.
//
// Body is used e.g. by MultiSearch to get information about the search body
// of one SearchRequest.
// See https://www.elastic.co/guide/en/elasticsearch/reference/6.0/search-multi-search.html
func (r *SearchRequest) Body() (string, error) {
switch t := r.source.(type) {
default:
body, err := json.Marshal(r.source)
if err != nil {
return "", err
}
return string(body), nil
case *SearchSource:
src, err := t.Source()
if err != nil {
return "", err
}
body, err := json.Marshal(src)
if err != nil {
return "", err
}
return string(body), nil
case json.RawMessage:
return string(t), nil
case *json.RawMessage:
return string(*t), nil
case string:
return t, nil
case *string:
if t != nil {
return *t, nil
}
return "{}", nil
}
}
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