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
|
/*
* This file is part of caronte (https://github.com/eciavatta/caronte).
* Copyright (c) 2020 Emiliano Ciavatta.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package main
import (
"context"
log "github.com/sirupsen/logrus"
"strings"
"sync"
"time"
)
const (
secondsToNano = 1000 * 1000 * 1000
maxSearchTimeout = 10 * secondsToNano
maxRecentSearches = 200
)
type PerformedSearch struct {
ID RowID `bson:"_id" json:"id"`
SearchOptions SearchOptions `bson:"search_options" json:"search_options"`
AffectedConnections []RowID `bson:"affected_connections" json:"-"`
AffectedConnectionsCount int `bson:"affected_connections_count" json:"affected_connections_count"`
StartedAt time.Time `bson:"started_at" json:"started_at"`
FinishedAt time.Time `bson:"finished_at" json:"finished_at"`
UpdatedAt time.Time `bson:"updated_at" json:"updated_at"`
Timeout time.Duration `bson:"timeout" json:"timeout"`
}
type SearchOptions struct {
TextSearch TextSearch `bson:"text_search" json:"text_search"`
RegexSearch RegexSearch `bson:"regex_search" json:"regex_search"`
Timeout time.Duration `bson:"timeout" json:"timeout" binding:"max=60"`
}
type TextSearch struct {
Terms []string `bson:"terms" json:"terms" binding:"isdefault|min=1,dive,min=3"`
ExcludedTerms []string `bson:"excluded_terms" json:"excluded_terms" binding:"isdefault|min=1,dive,min=3"`
ExactPhrase string `bson:"exact_phrase" json:"exact_phrase" binding:"isdefault|min=3"`
CaseSensitive bool `bson:"case_sensitive" json:"case_sensitive"`
}
type RegexSearch struct {
Pattern string `bson:"pattern" json:"pattern" binding:"isdefault|min=3"`
NotPattern string `bson:"not_pattern" json:"not_pattern" binding:"isdefault|min=3"`
CaseInsensitive bool `bson:"case_insensitive" json:"case_insensitive"`
MultiLine bool `bson:"multi_line" json:"multi_line"`
IgnoreWhitespaces bool `bson:"ignore_whitespaces" json:"ignore_whitespaces"`
DotCharacter bool `bson:"dot_character" json:"dot_character"`
}
type SearchController struct {
storage Storage
performedSearches []PerformedSearch
mutex sync.Mutex
}
func NewSearchController(storage Storage) *SearchController {
var searches []PerformedSearch
if err := storage.Find(Searches).Limit(maxRecentSearches).All(&searches); err != nil {
log.WithError(err).Panic("failed to retrieve performed searches")
}
return &SearchController{
storage: storage,
performedSearches: searches,
}
}
func (sc *SearchController) GetPerformedSearches() []PerformedSearch {
sc.mutex.Lock()
defer sc.mutex.Unlock()
return sc.performedSearches
}
func (sc *SearchController) GetPerformedSearch(id RowID) PerformedSearch {
sc.mutex.Lock()
defer sc.mutex.Unlock()
var performedSearch PerformedSearch
for _, search := range sc.performedSearches {
if search.ID == id {
performedSearch = search
}
}
return performedSearch
}
func (sc *SearchController) PerformSearch(c context.Context, options SearchOptions) PerformedSearch {
findQuery := sc.storage.Find(ConnectionStreams).Projection(OrderedDocument{{"connection_id", 1}}).Context(c)
timeout := options.Timeout * secondsToNano
if timeout <= 0 || timeout > maxSearchTimeout {
timeout = maxSearchTimeout
}
findQuery = findQuery.MaxTime(timeout)
if !options.TextSearch.isZero() {
var text string
if options.TextSearch.ExactPhrase != "" {
text = "\"" + options.TextSearch.ExactPhrase + "\""
} else {
text = strings.Join(options.TextSearch.Terms, " ")
if options.TextSearch.ExcludedTerms != nil {
text += " -" + strings.Join(options.TextSearch.ExcludedTerms, " -")
}
}
findQuery = findQuery.Filter(OrderedDocument{{"$text", UnorderedDocument{
"$search": text,
"$language": "none",
"$caseSensitive": options.TextSearch.CaseSensitive,
"$diacriticSensitive": false,
}}})
} else {
var regexOptions string
if options.RegexSearch.CaseInsensitive {
regexOptions += "i"
}
if options.RegexSearch.MultiLine {
regexOptions += "m"
}
if options.RegexSearch.IgnoreWhitespaces {
regexOptions += "x"
}
if options.RegexSearch.DotCharacter {
regexOptions += "s"
}
var regex UnorderedDocument
if options.RegexSearch.Pattern != "" {
regex = UnorderedDocument{"$regex": options.RegexSearch.Pattern, "$options": regexOptions}
} else {
regex = UnorderedDocument{"$not":
UnorderedDocument{"$regex": options.RegexSearch.NotPattern, "$options": regexOptions}}
}
findQuery = findQuery.Filter(OrderedDocument{{"payload_string", regex}})
}
var connections []ConnectionStream
startedAt := time.Now()
if err := findQuery.All(&connections); err != nil {
log.WithError(err).Error("oh no")
}
affectedConnections := uniqueConnectionIds(connections)
finishedAt := time.Now()
performedSearch := PerformedSearch{
ID: NewRowID(),
SearchOptions: options,
AffectedConnections: affectedConnections,
AffectedConnectionsCount: len(affectedConnections),
StartedAt: startedAt,
FinishedAt: finishedAt,
UpdatedAt: finishedAt,
Timeout: options.Timeout,
}
if _, err := sc.storage.Insert(Searches).Context(c).One(performedSearch); err != nil {
log.WithError(err).Panic("failed to insert a new performed search")
}
sc.mutex.Lock()
sc.performedSearches = append([]PerformedSearch{performedSearch}, sc.performedSearches...)
if len(sc.performedSearches) > maxRecentSearches {
sc.performedSearches = sc.performedSearches[:200]
}
sc.mutex.Unlock()
return performedSearch
}
func (sc TextSearch) isZero() bool {
return sc.Terms == nil && sc.ExcludedTerms == nil && sc.ExactPhrase == ""
}
func (sc RegexSearch) isZero() bool {
return RegexSearch{} == sc
}
func uniqueConnectionIds(connections []ConnectionStream) []RowID {
keys := make(map[RowID]bool)
var out []RowID
for _, entry := range connections {
if _, value := keys[entry.ConnectionID]; !value {
keys[entry.ConnectionID] = true
out = append(out, entry.ConnectionID)
}
}
return out
}
|
