82 lines
1.7 KiB
Go
82 lines
1.7 KiB
Go
package auth
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import (
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"fmt"
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"time"
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"github.com/micro/go-micro/v2/auth"
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"github.com/micro/go-micro/v2/logger"
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)
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// Generate generates a service account for and continually
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// refreshes the access token.
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func Generate(id string, name string, a auth.Auth) error {
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// extract the account creds from options, these can be set by flags
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accID := a.Options().ID
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accSecret := a.Options().Secret
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// if no credentials were provided, generate an account
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if len(accID) == 0 || len(accSecret) == 0 {
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name := fmt.Sprintf("%v-%v", name, id)
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opts := []auth.GenerateOption{
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auth.WithType("service"),
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auth.WithScopes("service"),
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}
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acc, err := a.Generate(name, opts...)
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if err != nil {
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return err
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}
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logger.Debugf("Auth [%v] Authenticated as %v issued by %v", a, name, acc.Issuer)
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accID = acc.ID
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accSecret = acc.Secret
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}
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// generate the first token
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token, err := a.Token(
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auth.WithCredentials(accID, accSecret),
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auth.WithExpiry(time.Minute*10),
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)
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if err != nil {
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return err
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}
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// set the credentials and token in auth options
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a.Init(
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auth.ClientToken(token),
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auth.Credentials(accID, accSecret),
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)
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// periodically check to see if the token needs refreshing
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go func() {
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timer := time.NewTicker(time.Second * 15)
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for {
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<-timer.C
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// don't refresh the token if it's not close to expiring
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tok := a.Options().Token
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if tok.Expiry.Unix() > time.Now().Add(time.Minute).Unix() {
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continue
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}
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// generate the first token
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tok, err := a.Token(
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auth.WithToken(tok.RefreshToken),
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auth.WithExpiry(time.Minute*10),
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)
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if err != nil {
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logger.Warnf("[Auth] Error refreshing token: %v", err)
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continue
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}
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// set the token
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a.Init(auth.ClientToken(tok))
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}
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}()
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return nil
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}
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