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package transactional
import "gopkg.in/src-d/go-git.v4/config"
// ConfigStorage implements the storer.ConfigStorage for the transactional package.
type ConfigStorage struct {
config.ConfigStorer
temporal config.ConfigStorer
set bool
}
// NewConfigStorage returns a new ConfigStorer based on a base storer and a
// temporal storer.
func NewConfigStorage(s, temporal config.ConfigStorer) *ConfigStorage {
return &ConfigStorage{ConfigStorer: s, temporal: temporal}
}
// SetConfig honors the storer.ConfigStorer interface.
func (c *ConfigStorage) SetConfig(cfg *config.Config) error {
if err := c.temporal.SetConfig(cfg); err != nil {
return err
}
c.set = true
return nil
}
// Config honors the storer.ConfigStorer interface.
func (c *ConfigStorage) Config() (*config.Config, error) {
if !c.set {
return c.ConfigStorer.Config()
}
return c.temporal.Config()
}
// Commit it copies the config from the temporal storage into the base storage.
func (c *ConfigStorage) Commit() error {
if !c.set {
return nil
}
cfg, err := c.temporal.Config()
if err != nil {
return err
}
return c.ConfigStorer.SetConfig(cfg)
}
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