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sqldb.go
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sqldb.go
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package sqldb
import (
"context"
"code.cloudfoundry.org/bbs/db/sqldb/helpers"
"code.cloudfoundry.org/bbs/encryption"
"code.cloudfoundry.org/bbs/format"
"code.cloudfoundry.org/bbs/guidprovider"
"code.cloudfoundry.org/bbs/models"
"code.cloudfoundry.org/clock"
loggingclient "code.cloudfoundry.org/diego-logging-client"
"code.cloudfoundry.org/lager"
)
type SQLDB struct {
db helpers.QueryableDB
convergenceWorkersSize int
updateWorkersSize int
clock clock.Clock
guidProvider guidprovider.GUIDProvider
serializer format.Serializer
cryptor encryption.Cryptor
encoder format.Encoder
flavor string
helper helpers.SQLHelper
metronClient loggingclient.IngressClient
}
func NewSQLDB(
db helpers.QueryableDB,
convergenceWorkersSize int,
updateWorkersSize int,
cryptor encryption.Cryptor,
guidProvider guidprovider.GUIDProvider,
clock clock.Clock,
flavor string,
metronClient loggingclient.IngressClient,
) *SQLDB {
helper := helpers.NewSQLHelper(flavor)
return &SQLDB{
db: db,
convergenceWorkersSize: convergenceWorkersSize,
updateWorkersSize: updateWorkersSize,
clock: clock,
guidProvider: guidProvider,
serializer: format.NewSerializer(cryptor),
cryptor: cryptor,
encoder: format.NewEncoder(cryptor),
flavor: flavor,
helper: helper,
metronClient: metronClient,
}
}
func (db *SQLDB) transact(ctx context.Context, logger lager.Logger, f func(logger lager.Logger, tx helpers.Tx) error) error {
err := db.helper.Transact(ctx, logger, db.db, f)
if err != nil {
return db.convertSQLError(err)
}
return nil
}
func (db *SQLDB) serializeModel(logger lager.Logger, model format.Model) ([]byte, error) {
encodedPayload, err := db.serializer.Marshal(logger, model)
if err != nil {
logger.Error("failed-to-serialize-model", err)
return nil, models.NewError(models.Error_InvalidRecord, err.Error())
}
return encodedPayload, nil
}
func (db *SQLDB) deserializeModel(logger lager.Logger, data []byte, model format.Model) error {
err := db.serializer.Unmarshal(logger, data, model)
if err != nil {
logger.Error("failed-to-deserialize-model", err)
return models.NewError(models.Error_InvalidRecord, err.Error())
}
return nil
}
func (db *SQLDB) convertSQLError(err error) *models.Error {
converted := db.helper.ConvertSQLError(err)
switch converted {
case helpers.ErrResourceExists:
return models.ErrResourceExists
case helpers.ErrDeadlock:
return models.ErrDeadlock
case helpers.ErrBadRequest:
return models.ErrBadRequest
case helpers.ErrUnrecoverableError:
return models.NewUnrecoverableError(err)
case helpers.ErrResourceNotFound:
return models.ErrResourceNotFound
default:
return models.ConvertError(err)
}
}