dex/storage/ent/sqlite.go

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package ent
import (
"context"
"crypto/sha256"
"strings"
"entgo.io/ent/dialect/sql"
"entgo.io/ent/dialect/sql/schema"
_ "github.com/mattn/go-sqlite3" // Register sqlite driver.
"github.com/dexidp/dex/pkg/log"
"github.com/dexidp/dex/storage"
"github.com/dexidp/dex/storage/ent/client"
"github.com/dexidp/dex/storage/ent/db"
)
// SQLite3 options for creating an SQL db.
type SQLite3 struct {
File string `json:"file"`
}
// Open always returns a new in sqlite3 storage.
func (s *SQLite3) Open(logger log.Logger) (storage.Storage, error) {
logger.Debug("experimental ent-based storage driver is enabled")
// Implicitly set foreign_keys pragma to "on" because it is required by ent
s.File = addFK(s.File)
drv, err := sql.Open("sqlite3", s.File)
if err != nil {
return nil, err
}
// always allow only one connection to sqlite3, any other thread/go-routine
// attempting concurrent access will have to wait
pool := drv.DB()
pool.SetMaxOpenConns(1)
databaseClient := client.NewDatabase(
client.WithClient(db.NewClient(db.Driver(drv))),
client.WithHasher(sha256.New),
)
if err := databaseClient.Schema().Create(context.TODO(), schema.WithAtlas(false)); err != nil {
return nil, err
}
return databaseClient, nil
}
func addFK(dsn string) string {
if strings.Contains(dsn, "_fk") {
return dsn
}
delim := "?"
if strings.Contains(dsn, "?") {
delim = "&"
}
return dsn + delim + "_fk=1"
}