status-im/status-go
2
0
Fork 0
mirror of https://github.com/status-im/status-go.git synced 2025-02-19 18:28:18 +00:00
Code Issues Projects Releases Wiki Activity

feat: enable multiple db connections with sqlcipher

Browse Source 
part of: status-im/status-desktop#10558
This commit is contained in:
Patryk Osmaczko 2023-05-18 23:42:22 +02:00 committed by osmaczko
parent 75864528b1
commit 5777bb429a
1 changed files with 50 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

62
sqlite/sqlite.go
View File

@ -2,11 +2,13 @@ package sqlite
import ( import (
"database/sql" "database/sql"
"database/sql/driver"
"errors" "errors"
"fmt" "fmt"
"os" "os"
"runtime"
_ "github.com/mutecomm/go-sqlcipher" // We require go sqlcipher that overrides default implementation sqlcipher "github.com/mutecomm/go-sqlcipher" // We require go sqlcipher that overrides default implementation
"github.com/status-im/status-go/protocol/sqlite" "github.com/status-im/status-go/protocol/sqlite"
) )
@ -75,52 +77,60 @@ func EncryptDB(unencryptedPath string, encryptedPath string, key string, kdfIter
return err return err
} }
func openCipher(db *sql.DB, key string, kdfIterationsNumber int, inMemory bool) error { func openDB(path string, key string, kdfIterationsNumber int) (*sql.DB, error) {
keyString := fmt.Sprintf("PRAGMA key = '%s'", key) driverName := fmt.Sprintf("sqlcipher_with_extensions-%d", len(sql.Drivers()))
if _, err := db.Exec(keyString); err != nil { sql.Register(driverName, &sqlcipher.SQLiteDriver{
return errors.New("failed to set key pragma") ConnectHook: func(conn *sqlcipher.SQLiteConn) error {
if _, err := conn.Exec("PRAGMA foreign_keys=ON", []driver.Value{}); err != nil {
return errors.New("failed to set `foreign_keys` pragma")
}
if _, err := conn.Exec(fmt.Sprintf("PRAGMA key = '%s'", key), []driver.Value{}); err != nil {
return errors.New("failed to set `key` pragma")
} }
if kdfIterationsNumber <= 0 { if kdfIterationsNumber <= 0 {
kdfIterationsNumber = sqlite.ReducedKDFIterationsNumber kdfIterationsNumber = sqlite.ReducedKDFIterationsNumber
} }
if _, err := db.Exec(fmt.Sprintf("PRAGMA kdf_iter = '%d'", kdfIterationsNumber)); err != nil { if _, err := conn.Exec(fmt.Sprintf("PRAGMA kdf_iter = '%d'", kdfIterationsNumber), []driver.Value{}); err != nil {
return err return errors.New("failed to set `kdf_iter` pragma")
} }
// readers do not block writers and faster i/o operations // readers do not block writers and faster i/o operations
// https://www.sqlite.org/draft/wal.html if _, err := conn.Exec("PRAGMA journal_mode=WAL", []driver.Value{}); err != nil && path != InMemoryPath {
// must be set after db is encrypted return errors.New("failed to set `journal_mode` pragma")
var mode string
err := db.QueryRow("PRAGMA journal_mode=WAL").Scan(&mode)
if err != nil {
return err
} }
if mode != WALMode && !inMemory {
return fmt.Errorf("unable to set journal_mode to WAL. actual mode %s", mode) // workaround to mitigate the issue of "database is locked" errors during concurrent write operations
if _, err := conn.Exec("PRAGMA busy_timeout=60000", []driver.Value{}); err != nil {
return errors.New("failed to set `busy_timeout` pragma")
} }
return nil return nil
} },
})
func openDB(path string, key string, kdfIterationsNumber int) (*sql.DB, error) { db, err := sql.Open(driverName, path)
db, err := sql.Open("sqlite3", path)
if err != nil { if err != nil {
return nil, err return nil, err
} }
// Disable concurrent access as not supported by the driver if path == InMemoryPath {
db.SetMaxOpenConns(1) db.SetMaxOpenConns(1)
} else {
if _, err = db.Exec("PRAGMA foreign_keys=ON"); err != nil { nproc := func() int {
return nil, err maxProcs := runtime.GOMAXPROCS(0)
numCPU := runtime.NumCPU()
if maxProcs < numCPU {
return maxProcs
}
return numCPU
}()
db.SetMaxOpenConns(nproc)
db.SetMaxIdleConns(nproc)
} }
err = openCipher(db, key, kdfIterationsNumber, path == InMemoryPath)
if err != nil {
return nil, err
}
return db, nil return db, nil
} }