forked from hashicorp/vault
-
Notifications
You must be signed in to change notification settings - Fork 0
/
mssql.go
266 lines (212 loc) · 6.15 KB
/
mssql.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
package mssql
import (
"context"
"database/sql"
"fmt"
"sort"
"strconv"
"strings"
"time"
metrics "github.com/armon/go-metrics"
_ "github.com/denisenkom/go-mssqldb"
"github.com/hashicorp/errwrap"
log "github.com/hashicorp/go-hclog"
"github.com/hashicorp/vault/helper/strutil"
"github.com/hashicorp/vault/physical"
)
// Verify MSSQLBackend satisfies the correct interfaces
var _ physical.Backend = (*MSSQLBackend)(nil)
type MSSQLBackend struct {
dbTable string
client *sql.DB
statements map[string]*sql.Stmt
logger log.Logger
permitPool *physical.PermitPool
}
func NewMSSQLBackend(conf map[string]string, logger log.Logger) (physical.Backend, error) {
username, ok := conf["username"]
if !ok {
username = ""
}
password, ok := conf["password"]
if !ok {
password = ""
}
server, ok := conf["server"]
if !ok || server == "" {
return nil, fmt.Errorf("missing server")
}
port, ok := conf["port"]
if !ok {
port = ""
}
maxParStr, ok := conf["max_parallel"]
var maxParInt int
var err error
if ok {
maxParInt, err = strconv.Atoi(maxParStr)
if err != nil {
return nil, errwrap.Wrapf("failed parsing max_parallel parameter: {{err}}", err)
}
if logger.IsDebug() {
logger.Debug("max_parallel set", "max_parallel", maxParInt)
}
} else {
maxParInt = physical.DefaultParallelOperations
}
database, ok := conf["database"]
if !ok {
database = "Vault"
}
table, ok := conf["table"]
if !ok {
table = "Vault"
}
appname, ok := conf["appname"]
if !ok {
appname = "Vault"
}
connectionTimeout, ok := conf["connectiontimeout"]
if !ok {
connectionTimeout = "30"
}
logLevel, ok := conf["loglevel"]
if !ok {
logLevel = "0"
}
schema, ok := conf["schema"]
if !ok || schema == "" {
schema = "dbo"
}
connectionString := fmt.Sprintf("server=%s;app name=%s;connection timeout=%s;log=%s", server, appname, connectionTimeout, logLevel)
if username != "" {
connectionString += ";user id=" + username
}
if password != "" {
connectionString += ";password=" + password
}
if port != "" {
connectionString += ";port=" + port
}
db, err := sql.Open("mssql", connectionString)
if err != nil {
return nil, errwrap.Wrapf("failed to connect to mssql: {{err}}", err)
}
db.SetMaxOpenConns(maxParInt)
if _, err := db.Exec("IF NOT EXISTS(SELECT * FROM sys.databases WHERE name = '" + database + "') CREATE DATABASE " + database); err != nil {
return nil, errwrap.Wrapf("failed to create mssql database: {{err}}", err)
}
dbTable := database + "." + schema + "." + table
createQuery := "IF NOT EXISTS(SELECT 1 FROM " + database + ".INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE='BASE TABLE' AND TABLE_NAME='" + table + "' AND TABLE_SCHEMA='" + schema +
"') CREATE TABLE " + dbTable + " (Path VARCHAR(512) PRIMARY KEY, Value VARBINARY(MAX))"
if schema != "dbo" {
if _, err := db.Exec("USE " + database); err != nil {
return nil, errwrap.Wrapf("failed to switch mssql database: {{err}}", err)
}
var num int
err = db.QueryRow("SELECT 1 FROM sys.schemas WHERE name = '" + schema + "'").Scan(&num)
switch {
case err == sql.ErrNoRows:
if _, err := db.Exec("CREATE SCHEMA " + schema); err != nil {
return nil, errwrap.Wrapf("failed to create mssql schema: {{err}}", err)
}
case err != nil:
return nil, errwrap.Wrapf("failed to check if mssql schema exists: {{err}}", err)
}
}
if _, err := db.Exec(createQuery); err != nil {
return nil, errwrap.Wrapf("failed to create mssql table: {{err}}", err)
}
m := &MSSQLBackend{
dbTable: dbTable,
client: db,
statements: make(map[string]*sql.Stmt),
logger: logger,
permitPool: physical.NewPermitPool(maxParInt),
}
statements := map[string]string{
"put": "IF EXISTS(SELECT 1 FROM " + dbTable + " WHERE Path = ?) UPDATE " + dbTable + " SET Value = ? WHERE Path = ?" +
" ELSE INSERT INTO " + dbTable + " VALUES(?, ?)",
"get": "SELECT Value FROM " + dbTable + " WHERE Path = ?",
"delete": "DELETE FROM " + dbTable + " WHERE Path = ?",
"list": "SELECT Path FROM " + dbTable + " WHERE Path LIKE ?",
}
for name, query := range statements {
if err := m.prepare(name, query); err != nil {
return nil, err
}
}
return m, nil
}
func (m *MSSQLBackend) prepare(name, query string) error {
stmt, err := m.client.Prepare(query)
if err != nil {
return errwrap.Wrapf(fmt.Sprintf("failed to prepare %q: {{err}}", name), err)
}
m.statements[name] = stmt
return nil
}
func (m *MSSQLBackend) Put(ctx context.Context, entry *physical.Entry) error {
defer metrics.MeasureSince([]string{"mssql", "put"}, time.Now())
m.permitPool.Acquire()
defer m.permitPool.Release()
_, err := m.statements["put"].Exec(entry.Key, entry.Value, entry.Key, entry.Key, entry.Value)
if err != nil {
return err
}
return nil
}
func (m *MSSQLBackend) Get(ctx context.Context, key string) (*physical.Entry, error) {
defer metrics.MeasureSince([]string{"mssql", "get"}, time.Now())
m.permitPool.Acquire()
defer m.permitPool.Release()
var result []byte
err := m.statements["get"].QueryRow(key).Scan(&result)
if err == sql.ErrNoRows {
return nil, nil
}
if err != nil {
return nil, err
}
ent := &physical.Entry{
Key: key,
Value: result,
}
return ent, nil
}
func (m *MSSQLBackend) Delete(ctx context.Context, key string) error {
defer metrics.MeasureSince([]string{"mssql", "delete"}, time.Now())
m.permitPool.Acquire()
defer m.permitPool.Release()
_, err := m.statements["delete"].Exec(key)
if err != nil {
return err
}
return nil
}
func (m *MSSQLBackend) List(ctx context.Context, prefix string) ([]string, error) {
defer metrics.MeasureSince([]string{"mssql", "list"}, time.Now())
m.permitPool.Acquire()
defer m.permitPool.Release()
likePrefix := prefix + "%"
rows, err := m.statements["list"].Query(likePrefix)
if err != nil {
return nil, err
}
var keys []string
for rows.Next() {
var key string
err = rows.Scan(&key)
if err != nil {
return nil, errwrap.Wrapf("failed to scan rows: {{err}}", err)
}
key = strings.TrimPrefix(key, prefix)
if i := strings.Index(key, "/"); i == -1 {
keys = append(keys, key)
} else if i != -1 {
keys = strutil.AppendIfMissing(keys, string(key[:i+1]))
}
}
sort.Strings(keys)
return keys, nil
}