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PR feedback: simplified fallback implementation

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Co-Authored-By: Gabriel MABILLE <gamab@users.noreply.github.com>
This commit is contained in:
Claudiu Dragalina-Paraipan 2024-10-16 18:28:31 +03:00
parent b5209dba64
commit e9e2b11ba2
1 changed files with 6 additions and 4 deletions
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10
pkg/services/authn/grpcutils/grpc_authenticator.go
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@ -67,7 +67,6 @@ func NewInProcGrpcAuthenticator() *authnlib.GrpcAuthenticator {
type AuthenticatorWithFallback struct {
authenticator *authnlib.GrpcAuthenticator
legacyAuthenticator *grpc.Authenticator
fallbackEnabled bool
metrics *metrics
}
@ -82,12 +81,15 @@ func NewGrpcAuthenticatorWithFallback(cfg *setting.Cfg, reg prometheus.Registere
return nil, err
}
if !authCfg.LegacyFallback {
return authenticator, nil
}
legacyAuthenticator := &grpc.Authenticator{}
return &AuthenticatorWithFallback{
authenticator: authenticator,
legacyAuthenticator: legacyAuthenticator,
fallbackEnabled: authCfg.LegacyFallback,
metrics: newMetrics(reg),
}, nil
}
@ -95,8 +97,8 @@ func NewGrpcAuthenticatorWithFallback(cfg *setting.Cfg, reg prometheus.Registere
func (f *AuthenticatorWithFallback) Authenticate(ctx context.Context) (context.Context, error) {
// Try to authenticate with the new authenticator first
newCtx, err := f.authenticator.Authenticate(ctx)
// If allowed fallback to the legacy authenticator
if err != nil && f.fallbackEnabled {
if err != nil {
// In case of error, fallback to the legacy authenticator
newCtx, err = f.legacyAuthenticator.Authenticate(ctx)
f.metrics.fallbackCounter.WithLabelValues(fmt.Sprintf("%t", err == nil)).Inc()
}