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
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
|
// 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 (
"time"
)
// DateRangeAggregation is a range aggregation that is dedicated for
// date values. The main difference between this aggregation and the
// normal range aggregation is that the from and to values can be expressed
// in Date Math expressions, and it is also possible to specify a
// date format by which the from and to response fields will be returned.
// Note that this aggregration includes the from value and excludes the to
// value for each range.
// See: https://www.elastic.co/guide/en/elasticsearch/reference/6.0/search-aggregations-bucket-daterange-aggregation.html
type DateRangeAggregation struct {
field string
script *Script
subAggregations map[string]Aggregation
meta map[string]interface{}
keyed *bool
unmapped *bool
format string
entries []DateRangeAggregationEntry
}
type DateRangeAggregationEntry struct {
Key string
From interface{}
To interface{}
}
func NewDateRangeAggregation() *DateRangeAggregation {
return &DateRangeAggregation{
subAggregations: make(map[string]Aggregation),
entries: make([]DateRangeAggregationEntry, 0),
}
}
func (a *DateRangeAggregation) Field(field string) *DateRangeAggregation {
a.field = field
return a
}
func (a *DateRangeAggregation) Script(script *Script) *DateRangeAggregation {
a.script = script
return a
}
func (a *DateRangeAggregation) SubAggregation(name string, subAggregation Aggregation) *DateRangeAggregation {
a.subAggregations[name] = subAggregation
return a
}
// Meta sets the meta data to be included in the aggregation response.
func (a *DateRangeAggregation) Meta(metaData map[string]interface{}) *DateRangeAggregation {
a.meta = metaData
return a
}
func (a *DateRangeAggregation) Keyed(keyed bool) *DateRangeAggregation {
a.keyed = &keyed
return a
}
func (a *DateRangeAggregation) Unmapped(unmapped bool) *DateRangeAggregation {
a.unmapped = &unmapped
return a
}
func (a *DateRangeAggregation) Format(format string) *DateRangeAggregation {
a.format = format
return a
}
func (a *DateRangeAggregation) AddRange(from, to interface{}) *DateRangeAggregation {
a.entries = append(a.entries, DateRangeAggregationEntry{From: from, To: to})
return a
}
func (a *DateRangeAggregation) AddRangeWithKey(key string, from, to interface{}) *DateRangeAggregation {
a.entries = append(a.entries, DateRangeAggregationEntry{Key: key, From: from, To: to})
return a
}
func (a *DateRangeAggregation) AddUnboundedTo(from interface{}) *DateRangeAggregation {
a.entries = append(a.entries, DateRangeAggregationEntry{From: from, To: nil})
return a
}
func (a *DateRangeAggregation) AddUnboundedToWithKey(key string, from interface{}) *DateRangeAggregation {
a.entries = append(a.entries, DateRangeAggregationEntry{Key: key, From: from, To: nil})
return a
}
func (a *DateRangeAggregation) AddUnboundedFrom(to interface{}) *DateRangeAggregation {
a.entries = append(a.entries, DateRangeAggregationEntry{From: nil, To: to})
return a
}
func (a *DateRangeAggregation) AddUnboundedFromWithKey(key string, to interface{}) *DateRangeAggregation {
a.entries = append(a.entries, DateRangeAggregationEntry{Key: key, From: nil, To: to})
return a
}
func (a *DateRangeAggregation) Lt(to interface{}) *DateRangeAggregation {
a.entries = append(a.entries, DateRangeAggregationEntry{From: nil, To: to})
return a
}
func (a *DateRangeAggregation) LtWithKey(key string, to interface{}) *DateRangeAggregation {
a.entries = append(a.entries, DateRangeAggregationEntry{Key: key, From: nil, To: to})
return a
}
func (a *DateRangeAggregation) Between(from, to interface{}) *DateRangeAggregation {
a.entries = append(a.entries, DateRangeAggregationEntry{From: from, To: to})
return a
}
func (a *DateRangeAggregation) BetweenWithKey(key string, from, to interface{}) *DateRangeAggregation {
a.entries = append(a.entries, DateRangeAggregationEntry{Key: key, From: from, To: to})
return a
}
func (a *DateRangeAggregation) Gt(from interface{}) *DateRangeAggregation {
a.entries = append(a.entries, DateRangeAggregationEntry{From: from, To: nil})
return a
}
func (a *DateRangeAggregation) GtWithKey(key string, from interface{}) *DateRangeAggregation {
a.entries = append(a.entries, DateRangeAggregationEntry{Key: key, From: from, To: nil})
return a
}
func (a *DateRangeAggregation) Source() (interface{}, error) {
// Example:
// {
// "aggs" : {
// "range" : {
// "date_range": {
// "field": "date",
// "format": "MM-yyy",
// "ranges": [
// { "to": "now-10M/M" },
// { "from": "now-10M/M" }
// ]
// }
// }
// }
// }
// }
//
// This method returns only the { "date_range" : { ... } } part.
source := make(map[string]interface{})
opts := make(map[string]interface{})
source["date_range"] = opts
// ValuesSourceAggregationBuilder
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.keyed != nil {
opts["keyed"] = *a.keyed
}
if a.unmapped != nil {
opts["unmapped"] = *a.unmapped
}
if a.format != "" {
opts["format"] = a.format
}
var ranges []interface{}
for _, ent := range a.entries {
r := make(map[string]interface{})
if ent.Key != "" {
r["key"] = ent.Key
}
if ent.From != nil {
switch from := ent.From.(type) {
case int, int16, int32, int64, float32, float64:
r["from"] = from
case *int, *int16, *int32, *int64, *float32, *float64:
r["from"] = from
case time.Time:
r["from"] = from.Format(time.RFC3339)
case *time.Time:
r["from"] = from.Format(time.RFC3339)
case string:
r["from"] = from
case *string:
r["from"] = from
}
}
if ent.To != nil {
switch to := ent.To.(type) {
case int, int16, int32, int64, float32, float64:
r["to"] = to
case *int, *int16, *int32, *int64, *float32, *float64:
r["to"] = to
case time.Time:
r["to"] = to.Format(time.RFC3339)
case *time.Time:
r["to"] = to.Format(time.RFC3339)
case string:
r["to"] = to
case *string:
r["to"] = to
}
}
ranges = append(ranges, r)
}
opts["ranges"] = ranges
// 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
}
|
