157 lines
3.4 KiB
Go
157 lines
3.4 KiB
Go
package ent
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import (
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"context"
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"crypto/sha256"
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"database/sql"
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"fmt"
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"net"
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"regexp"
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"strconv"
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"strings"
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"time"
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entSQL "entgo.io/ent/dialect/sql"
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"entgo.io/ent/dialect/sql/schema"
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// Register postgres driver.
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_ "github.com/lib/pq"
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"github.com/dexidp/dex/pkg/log"
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"github.com/dexidp/dex/storage"
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"github.com/dexidp/dex/storage/ent/client"
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"github.com/dexidp/dex/storage/ent/db"
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)
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// nolint
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const (
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// postgres SSL modes
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pgSSLDisable = "disable"
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pgSSLRequire = "require"
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pgSSLVerifyCA = "verify-ca"
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pgSSLVerifyFull = "verify-full"
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)
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// Postgres options for creating an SQL db.
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type Postgres struct {
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NetworkDB
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SSL SSL `json:"ssl"`
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}
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// Open always returns a new in sqlite3 storage.
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func (p *Postgres) Open(logger log.Logger) (storage.Storage, error) {
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logger.Debug("experimental ent-based storage driver is enabled")
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drv, err := p.driver()
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if err != nil {
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return nil, err
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}
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databaseClient := client.NewDatabase(
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client.WithClient(db.NewClient(db.Driver(drv))),
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client.WithHasher(sha256.New),
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// The default behavior for Postgres transactions is consistent reads, not consistent writes.
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// For each transaction opened, ensure it has the correct isolation level.
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//
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// See: https://www.postgresql.org/docs/9.3/static/sql-set-transaction.html
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client.WithTxIsolationLevel(sql.LevelSerializable),
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)
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if err := databaseClient.Schema().Create(context.TODO(), schema.WithAtlas(true)); err != nil {
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return nil, err
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}
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return databaseClient, nil
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}
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func (p *Postgres) driver() (*entSQL.Driver, error) {
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drv, err := entSQL.Open("postgres", p.dsn())
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if err != nil {
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return nil, err
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}
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// set database/sql tunables if configured
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if p.ConnMaxLifetime != 0 {
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drv.DB().SetConnMaxLifetime(time.Duration(p.ConnMaxLifetime) * time.Second)
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}
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if p.MaxIdleConns == 0 {
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drv.DB().SetMaxIdleConns(5)
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} else {
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drv.DB().SetMaxIdleConns(p.MaxIdleConns)
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}
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if p.MaxOpenConns == 0 {
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drv.DB().SetMaxOpenConns(5)
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} else {
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drv.DB().SetMaxOpenConns(p.MaxOpenConns)
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}
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return drv, nil
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}
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func (p *Postgres) dsn() string {
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// detect host:port for backwards-compatibility
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host, port, err := net.SplitHostPort(p.Host)
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if err != nil {
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// not host:port, probably unix socket or bare address
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host = p.Host
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if p.Port != 0 {
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port = strconv.Itoa(int(p.Port))
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}
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}
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var parameters []string
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addParam := func(key, val string) {
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parameters = append(parameters, fmt.Sprintf("%s=%s", key, val))
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}
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addParam("connect_timeout", strconv.Itoa(p.ConnectionTimeout))
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if host != "" {
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addParam("host", dataSourceStr(host))
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}
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if port != "" {
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addParam("port", port)
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}
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if p.User != "" {
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addParam("user", dataSourceStr(p.User))
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}
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if p.Password != "" {
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addParam("password", dataSourceStr(p.Password))
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}
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if p.Database != "" {
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addParam("dbname", dataSourceStr(p.Database))
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}
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if p.SSL.Mode == "" {
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// Assume the strictest mode if unspecified.
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addParam("sslmode", dataSourceStr(pgSSLVerifyFull))
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} else {
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addParam("sslmode", dataSourceStr(p.SSL.Mode))
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}
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if p.SSL.CAFile != "" {
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addParam("sslrootcert", dataSourceStr(p.SSL.CAFile))
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}
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if p.SSL.CertFile != "" {
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addParam("sslcert", dataSourceStr(p.SSL.CertFile))
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}
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if p.SSL.KeyFile != "" {
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addParam("sslkey", dataSourceStr(p.SSL.KeyFile))
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}
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return strings.Join(parameters, " ")
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}
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var strEsc = regexp.MustCompile(`([\\'])`)
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func dataSourceStr(str string) string {
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return "'" + strEsc.ReplaceAllString(str, `\$1`) + "'"
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}
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