traefik/provider/acme/local_store.go

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2018-03-05 19:54:04 +00:00
package acme
import (
"encoding/json"
"io/ioutil"
"os"
"github.com/containous/traefik/log"
"github.com/containous/traefik/safe"
)
var _ Store = (*LocalStore)(nil)
// LocalStore Store implementation for local file
type LocalStore struct {
filename string
storedData *StoredData
SaveDataChan chan *StoredData
}
// NewLocalStore initializes a new LocalStore with a file name
func NewLocalStore(filename string) LocalStore {
store := LocalStore{filename: filename, SaveDataChan: make(chan *StoredData)}
store.listenSaveAction()
return store
}
func (s *LocalStore) get() (*StoredData, error) {
if s.storedData == nil {
s.storedData = &StoredData{HTTPChallenges: make(map[string]map[string][]byte)}
f, err := os.Open(s.filename)
if err != nil {
return nil, err
}
defer f.Close()
file, err := ioutil.ReadAll(f)
if err != nil {
return nil, err
}
if len(file) > 0 {
if err := json.Unmarshal(file, s.storedData); err != nil {
return nil, err
}
}
}
return s.storedData, nil
}
// listenSaveAction listens to a chan to store ACME data in json format into LocalStore.filename
func (s *LocalStore) listenSaveAction() {
safe.Go(func() {
for object := range s.SaveDataChan {
data, err := json.MarshalIndent(object, "", " ")
if err != nil {
log.Error(err)
}
err = ioutil.WriteFile(s.filename, data, 0600)
if err != nil {
log.Error(err)
}
}
})
}
// GetAccount returns ACME Account
func (s *LocalStore) GetAccount() (*Account, error) {
storedData, err := s.get()
if err != nil {
return nil, err
}
return storedData.Account, nil
}
// SaveAccount stores ACME Account
func (s *LocalStore) SaveAccount(account *Account) error {
storedData, err := s.get()
if err != nil {
return err
}
storedData.Account = account
s.SaveDataChan <- storedData
return nil
}
// GetCertificates returns ACME Certificates list
func (s *LocalStore) GetCertificates() ([]*Certificate, error) {
storedData, err := s.get()
if err != nil {
return nil, err
}
return storedData.Certificates, nil
}
// SaveCertificates stores ACME Certificates list
func (s *LocalStore) SaveCertificates(certificates []*Certificate) error {
storedData, err := s.get()
if err != nil {
return err
}
storedData.Certificates = certificates
s.SaveDataChan <- storedData
return nil
}
// GetHTTPChallenges returns ACME HTTP Challenges list
func (s *LocalStore) GetHTTPChallenges() (map[string]map[string][]byte, error) {
return s.storedData.HTTPChallenges, nil
}
// SaveHTTPChallenges stores ACME HTTP Challenges list
func (s *LocalStore) SaveHTTPChallenges(httpChallenges map[string]map[string][]byte) error {
s.storedData.HTTPChallenges = httpChallenges
return nil
}