// UpdateRecord updates a record to a resource(domain)
func UpdateRecord(domain string, resource *sham.Resource) error {
resource.Validate()
sham.SanitizeDomain(&domain)
// in case of some update to domain name...
if domain != resource.Domain {
// delete old domain
err := DeleteRecord(domain)
if err != nil {
return fmt.Errorf("Failed to clean up old domain - %v", err)
}
}
// store in cache
config.Log.Trace("Updating record in persistent cache...")
err := cache.UpdateRecord(domain, resource)
if err != nil {
return err
}
// set new resource to domain
// todo: atomic
Answers[resource.Domain] = *resource
return nil
}
// DeleteRecord removes a record from the persistent cache
func DeleteRecord(domain string) error {
if storage == nil {
return nil
}
shaman.SanitizeDomain(&domain)
return storage.deleteRecord(domain)
}
// UpdateRecord updates a record in the persistent cache
func UpdateRecord(domain string, resource *shaman.Resource) error {
if storage == nil {
return nil
}
shaman.SanitizeDomain(&domain)
resource.Validate()
return storage.updateRecord(domain, *resource)
}
// GetRecord gets a record to the persistent cache
func GetRecord(domain string) (*shaman.Resource, error) {
if storage == nil {
return nil, nil
}
shaman.SanitizeDomain(&domain)
return storage.getRecord(domain)
}
// DeleteRecord deletes the resource(domain)
func DeleteRecord(domain string) error {
sham.SanitizeDomain(&domain)
// update cache
config.Log.Trace("Removing record from persistent cache...")
err := cache.DeleteRecord(domain)
if err != nil {
return err
}
// todo: atomic
delete(Answers, domain)
// otherwise, be idempotent and report it was deleted...
return nil
}
// GetRecord returns a resource for the specified domain
func GetRecord(domain string) (sham.Resource, error) {
sham.SanitizeDomain(&domain)
resource, ok := Answers[domain]
// if domain not cached in memory...
if !ok {
// fetch from cache
record, err := cache.GetRecord(domain)
if record == nil {
return resource, fmt.Errorf("Failed to find domain - %v", err)
}
// update local cache
config.Log.Debug("Cache differs from local, updating...")
Answers[domain] = *record
}
return Answers[domain], nil
}
// Exists returns whether or not that domain exists
func Exists(domain string) bool {
sham.SanitizeDomain(&domain)
_, ok := Answers[domain]
return ok
}