File: search_request.go

package info (click to toggle)
golang-gopkg-olivere-elastic.v5 5.0.83-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, sid
  • size: 2,848 kB
  • sloc: makefile: 18; sh: 2
file content (217 lines) | stat: -rw-r--r-- 5,625 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
// 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
	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 dfs_query_then_fetch, query_then_fetch
// or query_and_fetch (deprecated in 5.3).
func (r *SearchRequest) SearchType(searchType string) *SearchRequest {
	r.searchType = searchType
	return r
}

// SearchTypeDfsQueryThenFetch sets search type to dfs_query_then_fetch.
func (r *SearchRequest) SearchTypeDfsQueryThenFetch() *SearchRequest {
	return r.SearchType("dfs_query_then_fetch")
}

// SearchTypeQueryThenFetch sets search type to query_then_fetch.
func (r *SearchRequest) SearchTypeQueryThenFetch() *SearchRequest {
	return r.SearchType("query_then_fetch")
}

// SearchTypeQueryAndFetch sets search type to query_and_fetch which
// was deprecated in 5.3.
func (r *SearchRequest) SearchTypeQueryAndFetch() *SearchRequest {
	return r.SearchType("query_and_fetch")
}

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/5.2/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/5.6/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
	}
}