92 lines
2.5 KiB
Go
92 lines
2.5 KiB
Go
package acme
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import (
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"fmt"
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"sync"
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"time"
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"github.com/cenk/backoff"
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"github.com/containous/traefik/cluster"
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"github.com/containous/traefik/log"
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"github.com/containous/traefik/safe"
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acme "github.com/xenolf/lego/acmev2"
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)
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var _ acme.ChallengeProviderTimeout = (*challengeHTTPProvider)(nil)
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type challengeHTTPProvider struct {
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store cluster.Store
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lock sync.RWMutex
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}
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func (c *challengeHTTPProvider) getTokenValue(token, domain string) []byte {
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log.Debugf("Looking for an existing ACME challenge for token %v...", token)
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c.lock.RLock()
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defer c.lock.RUnlock()
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account := c.store.Get().(*Account)
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if account.HTTPChallenge == nil {
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return []byte{}
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}
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var result []byte
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operation := func() error {
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var ok bool
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if result, ok = account.HTTPChallenge[token][domain]; !ok {
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return fmt.Errorf("cannot find challenge for token %v", token)
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}
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return nil
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}
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notify := func(err error, time time.Duration) {
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log.Errorf("Error getting challenge for token retrying in %s", time)
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}
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ebo := backoff.NewExponentialBackOff()
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ebo.MaxElapsedTime = 60 * time.Second
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err := backoff.RetryNotify(safe.OperationWithRecover(operation), ebo, notify)
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if err != nil {
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log.Errorf("Error getting challenge for token: %v", err)
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return []byte{}
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}
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return result
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}
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func (c *challengeHTTPProvider) Present(domain, token, keyAuth string) error {
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log.Debugf("Challenge Present %s", domain)
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c.lock.Lock()
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defer c.lock.Unlock()
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transaction, object, err := c.store.Begin()
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if err != nil {
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return err
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}
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account := object.(*Account)
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if account.HTTPChallenge == nil {
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account.HTTPChallenge = map[string]map[string][]byte{}
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}
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if _, ok := account.HTTPChallenge[token]; !ok {
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account.HTTPChallenge[token] = map[string][]byte{}
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}
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account.HTTPChallenge[token][domain] = []byte(keyAuth)
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return transaction.Commit(account)
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}
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func (c *challengeHTTPProvider) CleanUp(domain, token, keyAuth string) error {
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log.Debugf("Challenge CleanUp %s", domain)
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c.lock.Lock()
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defer c.lock.Unlock()
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transaction, object, err := c.store.Begin()
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if err != nil {
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return err
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}
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account := object.(*Account)
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if _, ok := account.HTTPChallenge[token]; ok {
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if _, domainOk := account.HTTPChallenge[token][domain]; domainOk {
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delete(account.HTTPChallenge[token], domain)
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}
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if len(account.HTTPChallenge[token]) == 0 {
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delete(account.HTTPChallenge, token)
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}
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}
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return transaction.Commit(account)
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}
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func (c *challengeHTTPProvider) Timeout() (timeout, interval time.Duration) {
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return 60 * time.Second, 5 * time.Second
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}
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