-
Notifications
You must be signed in to change notification settings - Fork 0
/
sql.go
175 lines (153 loc) · 3.8 KB
/
sql.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
/*
* 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 sync
import (
"context"
sql2 "database/sql"
"github.com/pydio/cells/common/log"
"go.uber.org/zap"
"github.com/pydio/packr"
migrate "github.com/rubenv/sql-migrate"
"github.com/pydio/cells/common/sql"
"github.com/pydio/cells/x/configx"
)
var (
queries = map[string]string{
"insertOne": `INSERT INTO %%PREFIX%%_checksums (etag,csum) VALUES (?,?)`,
"selectAll": `SELECT etag FROM %%PREFIX%%_checksums`,
"deleteOne": `DELETE FROM %%PREFIX%%_checksums WHERE etag=?`,
"selectOne": `SELECT csum FROM %%PREFIX%%_checksums WHERE etag=?`,
}
)
// Impl of the SQL interface
type sqlImpl struct {
sql.DAO
}
// Init handler for the SQL DAO
func (h *sqlImpl) Init(options configx.Values) error {
// super
h.DAO.Init(options)
// Doing the database migrations
migrations := &sql.PackrMigrationSource{
Box: packr.NewBox("../../source/sync/migrations"),
Dir: h.Driver(),
TablePrefix: h.Prefix(),
}
_, err := sql.ExecMigration(h.DB(), h.Driver(), migrations, migrate.Up, h.Prefix())
if err != nil {
return err
}
// Preparing the db statements
if options.Val("prepare").Default(true).Bool() {
for key, query := range queries {
if err := h.Prepare(key, query); err != nil {
return err
}
}
}
return nil
}
func (h *sqlImpl) CleanResourcesOnDeletion() (error, string) {
migrations := &sql.PackrMigrationSource{
Box: packr.NewBox("../../source/sync/migrations"),
Dir: h.Driver(),
TablePrefix: h.Prefix(),
}
_, err := sql.ExecMigration(h.DB(), h.Driver(), migrations, migrate.Down, h.Prefix())
if err != nil {
return err, ""
}
return nil, "Removed tables for checksums"
}
func (h *sqlImpl) Get(eTag string) (string, bool) {
stmt, er := h.GetStmt("selectOne")
if er != nil {
h.logError(er)
return "", false
}
row := stmt.QueryRow(eTag)
var checksum string
if er := row.Scan(&checksum); er == nil {
return checksum, true
} else if er == sql2.ErrNoRows {
return "", false
} else {
h.logError(er)
return "", false
}
}
func (h *sqlImpl) Set(eTag, checksum string) {
stmt, er := h.GetStmt("insertOne")
if er != nil {
h.logError(er)
return
}
_, er = stmt.Exec(eTag, checksum)
if er != nil {
h.logError(er)
}
}
func (h *sqlImpl) Purge(knownETags []string) int {
stmt, er := h.GetStmt("selectAll")
if er != nil {
h.logError(er)
return 0
}
var dbTags []string
res, e := stmt.Query()
if e != nil {
h.logError(e)
return 0
}
defer res.Close()
for res.Next() {
var cs string
if e := res.Scan(&cs); e == nil {
dbTags = append(dbTags, cs)
}
}
count := 0
delStmt, e := h.GetStmt("deleteOne")
if e != nil {
h.logError(e)
return 0
}
for _, t := range dbTags {
var found bool
for _, k := range knownETags {
if k == t {
found = true
break
}
}
if found {
continue
}
if _, e := delStmt.Exec(t); e == nil {
count++
} else {
h.logError(e)
}
}
return count
}
func (h *sqlImpl) logError(e error) {
log.Logger(context.Background()).Error("[SLQ Checksum Mapper]", zap.Error(e))
}