forked from pydio/cells
-
Notifications
You must be signed in to change notification settings - Fork 0
/
bleve.go
340 lines (295 loc) · 9.33 KB
/
bleve.go
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
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
/*
* Copyright (c) 2018. Abstrium SAS <team (at) pydio.com>
* This file is part of Pydio Cells.
*
* Pydio Cells is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pydio Cells is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Pydio Cells. If not, see <http://www.gnu.org/licenses/>.
*
* The latest code can be found at <https://pydio.com>.
*/
// Package bleve implements the search engine using a Bleve indexer.
package bleve
import (
"context"
"fmt"
"os"
"path/filepath"
"strings"
"time"
"github.com/blevesearch/bleve"
_ "github.com/blevesearch/bleve/analysis/analyzer/keyword"
"github.com/blevesearch/bleve/search/query"
"github.com/sajari/docconv"
"go.uber.org/zap"
"github.com/golang/protobuf/proto"
"github.com/pydio/cells/common/log"
"github.com/pydio/cells/common/proto/tree"
"github.com/pydio/cells/common/views"
)
var (
BleveIndexPath = ""
)
type BleveServer struct {
Router views.Handler
Engine bleve.Index
IndexContent bool
}
func NewBleveEngine(indexContent bool) (*BleveServer, error) {
if BleveIndexPath == "" {
return nil, fmt.Errorf("please setup BleveIndexPath before opening engine")
}
_, e := os.Stat(BleveIndexPath)
var index bleve.Index
var err error
if e == nil {
index, err = bleve.Open(BleveIndexPath)
} else {
mapping := bleve.NewIndexMapping()
nodeMapping := bleve.NewDocumentMapping()
mapping.AddDocumentMapping("node", nodeMapping)
// Path to keyword
pathFieldMapping := bleve.NewTextFieldMapping()
pathFieldMapping.Analyzer = "keyword"
nodeMapping.AddFieldMappingsAt("Path", pathFieldMapping)
// Node type to keyword
nodeType := bleve.NewTextFieldMapping()
nodeType.Analyzer = "keyword"
nodeMapping.AddFieldMappingsAt("NodeType", nodeType)
// Extension to keyword
extType := bleve.NewTextFieldMapping()
extType.Analyzer = "keyword"
nodeMapping.AddFieldMappingsAt("Extension", extType)
// Modification Time as Date
modifTime := bleve.NewDateTimeFieldMapping()
nodeMapping.AddFieldMappingsAt("ModifTime", modifTime)
// GeoPoint
geoPosition := bleve.NewGeoPointFieldMapping()
nodeMapping.AddFieldMappingsAt("GeoPoint", geoPosition)
// Text Content
textContent := bleve.NewTextFieldMapping()
textContent.Analyzer = "en" // See detect_lang in the blevesearch/blevex package?
textContent.Store = false
textContent.IncludeInAll = false
nodeMapping.AddFieldMappingsAt("TextContent", textContent)
index, err = bleve.New(BleveIndexPath, mapping)
}
if err != nil {
return nil, err
}
return &BleveServer{
Engine: index,
IndexContent: indexContent,
}, nil
}
type IndexableNode struct {
tree.Node
ModifTime time.Time
Basename string
NodeType string
Extension string
TextContent string
GeoPoint map[string]interface{}
Meta map[string]interface{}
}
func (i *IndexableNode) BleveType() string {
return "node"
}
func (s *BleveServer) MakeIndexableNode(ctx context.Context, node *tree.Node) *IndexableNode {
indexNode := &IndexableNode{Node: *node}
indexNode.Meta = indexNode.AllMetaDeserialized()
indexNode.ModifTime = time.Unix(indexNode.MTime, 0)
var basename string
indexNode.GetMeta("name", &basename)
indexNode.Basename = basename
if indexNode.Type == 1 {
indexNode.NodeType = "file"
indexNode.Extension = filepath.Ext(basename)
} else {
indexNode.NodeType = "folder"
}
indexNode.GetMeta("GeoLocation", &indexNode.GeoPoint)
if s.IndexContent && indexNode.IsLeaf() {
if s.Router == nil {
s.Router = views.NewStandardRouter(views.RouterOptions{AdminView: false, WatchRegistry: false})
}
s.Router = views.NewStandardRouter(views.RouterOptions{AdminView: true, WatchRegistry: false})
reader, err := s.Router.GetObject(ctx, proto.Clone(node).(*tree.Node), &views.GetRequestData{Length: -1})
//reader, err := node.ReadFile(ctx)
if err == nil {
convertResp, er := docconv.Convert(reader, docconv.MimeTypeByExtension(basename), true)
if er == nil {
// Todo : do something with convertResp.Meta?
log.Logger(ctx).Debug("[BLEVE] Indexing content body for file")
indexNode.TextContent = convertResp.Body
}
} else {
log.Logger(ctx).Debug("[BLEVE] Index content: error while trying to read file for content indexation")
}
}
indexNode.MetaStore = nil
return indexNode
}
func (s *BleveServer) Close() error {
return s.Engine.Close()
}
func (s *BleveServer) IndexNode(c context.Context, n *tree.Node) error {
indexNode := s.MakeIndexableNode(c, n)
err := s.Engine.Index(n.GetUuid(), indexNode)
log.Logger(c).Debug("IndexNode", indexNode.Zap())
if err != nil {
return err
}
return nil
}
func (s *BleveServer) DeleteNode(c context.Context, n *tree.Node) error {
return s.Engine.Delete(n.GetUuid())
}
func (s *BleveServer) ClearIndex(ctx context.Context) error {
// List all nodes and remove them
request := bleve.NewSearchRequest(bleve.NewMatchAllQuery())
MaxUint := ^uint(0)
MaxInt := int(MaxUint >> 1)
request.Size = MaxInt
searchResult, err := s.Engine.Search(request)
if err != nil {
return err
}
for _, hit := range searchResult.Hits {
log.Logger(ctx).Info("ClearIndex", zap.String("hit", hit.ID))
s.Engine.Delete(hit.ID)
}
return nil
}
func (s *BleveServer) SearchNodes(c context.Context, queryObject *tree.Query, from int32, size int32, resultChan chan *tree.Node, doneChan chan bool) error {
boolean := bleve.NewBooleanQuery()
// FileName
if len(queryObject.GetFileName()) > 0 {
wCard := bleve.NewWildcardQuery("*" + strings.Trim(strings.ToLower(queryObject.GetFileName()), "*") + "*")
wCard.SetField("Basename")
boolean.AddMust(wCard)
}
// File Size Range
if queryObject.MinSize > 0 || queryObject.MaxSize > 0 {
var min = float64(queryObject.MinSize)
var max = float64(queryObject.MaxSize)
var numRange *query.NumericRangeQuery
if max == 0 {
numRange = bleve.NewNumericRangeQuery(&min, nil)
} else {
numRange = bleve.NewNumericRangeQuery(&min, &max)
}
numRange.SetField("Size")
boolean.AddMust(numRange)
}
// Date Range
if queryObject.MinDate > 0 || queryObject.MaxDate > 0 {
var dateRange *query.DateRangeQuery
if queryObject.MaxDate > 0 {
dateRange = bleve.NewDateRangeQuery(time.Unix(queryObject.MinDate, 0), time.Unix(queryObject.MaxDate, 0))
} else {
dateRange = bleve.NewDateRangeQuery(time.Unix(queryObject.MinDate, 0), time.Now())
}
dateRange.SetField("ModifTime")
boolean.AddMust(dateRange)
}
// Limit to a SubTree
if len(queryObject.PathPrefix) > 0 {
subQ := bleve.NewBooleanQuery()
for _, pref := range queryObject.PathPrefix {
prefix := bleve.NewPrefixQuery(pref)
prefix.SetField("Path")
subQ.AddShould(prefix)
}
boolean.AddMust(subQ)
}
// Limit to a given node type
if queryObject.Type > 0 {
nodeType := "file"
if queryObject.Type == 2 {
nodeType = "folder"
}
typeQuery := bleve.NewTermQuery(nodeType)
typeQuery.SetField("NodeType")
boolean.AddMust(typeQuery)
}
if len(queryObject.Extension) > 0 {
extQuery := bleve.NewTermQuery(queryObject.Extension)
extQuery.SetField("Extension")
boolean.AddMust(extQuery)
}
if len(queryObject.FreeString) > 0 {
qStringQuery := bleve.NewQueryStringQuery(queryObject.FreeString)
boolean.AddMust(qStringQuery)
}
if queryObject.GeoQuery != nil {
if queryObject.GeoQuery.Center != nil && len(queryObject.GeoQuery.Distance) > 0 {
distanceQuery := bleve.NewGeoDistanceQuery(queryObject.GeoQuery.Center.Lon, queryObject.GeoQuery.Center.Lat, queryObject.GeoQuery.Distance)
distanceQuery.SetField("GeoPoint")
boolean.AddMust(distanceQuery)
} else if queryObject.GeoQuery.TopLeft != nil && queryObject.GeoQuery.BottomRight != nil {
boundingBoxQuery := bleve.NewGeoBoundingBoxQuery(
queryObject.GeoQuery.TopLeft.Lon,
queryObject.GeoQuery.TopLeft.Lat,
queryObject.GeoQuery.BottomRight.Lon,
queryObject.GeoQuery.BottomRight.Lat,
)
boundingBoxQuery.SetField("GeoPoint")
boolean.AddMust(boundingBoxQuery)
}
}
log.Logger(c).Info("SearchObjects", zap.Any("query", boolean))
searchRequest := bleve.NewSearchRequest(boolean)
if size > 0 {
searchRequest.Size = int(size)
}
searchRequest.From = int(from)
searchResult, err := s.Engine.SearchInContext(c, searchRequest)
if err != nil {
doneChan <- true
return err
}
log.Logger(c).Info("SearchObjects", zap.Any("result", searchResult))
for _, hit := range searchResult.Hits {
doc, docErr := s.Engine.Document(hit.ID)
if docErr != nil || doc == nil {
continue
}
node := &tree.Node{}
for _, f := range doc.Fields {
stringValue := string(f.Value())
switch f.Name() {
case "Uuid":
node.Uuid = stringValue
break
case "Path":
node.Path = stringValue
break
case "NodeType":
if stringValue == "file" {
node.Type = 1
} else if stringValue == "folder" {
node.Type = 2
}
break
case "Basename":
node.SetMeta("name", stringValue)
default:
break
}
}
log.Logger(c).Info("SearchObjects", zap.Any("node", node))
resultChan <- node
}
doneChan <- true
return nil
}