Adding dep files and dependencies.

vendor/github.com/mesos/mesos-go/api/v0/auth/interface.go

@@ -0,0 +1,63 @@
+package auth
+
+import (
+	"errors"
+	"fmt"
+	"sync"
+
+	log "github.com/golang/glog"
+	"github.com/mesos/mesos-go/api/v0/auth/callback"
+	"golang.org/x/net/context"
+)
+
+// SPI interface: login provider implementations support this interface, clients
+// do not authenticate against this directly, instead they should use Login()
+type Authenticatee interface {
+	// Returns no errors if successfully authenticated, otherwise a single
+	// error.
+	Authenticate(ctx context.Context, handler callback.Handler) error
+}
+
+// Func adapter for interface: allow func's to implement the Authenticatee interface
+// as long as the func signature matches
+type AuthenticateeFunc func(ctx context.Context, handler callback.Handler) error
+
+func (f AuthenticateeFunc) Authenticate(ctx context.Context, handler callback.Handler) error {
+	return f(ctx, handler)
+}
+
+var (
+	// Authentication was attempted and failed (likely due to incorrect credentials, too
+	// many retries within a time window, etc). Distinctly different from authentication
+	// errors (e.g. network errors, configuration errors, etc).
+	AuthenticationFailed = errors.New("authentication failed")
+
+	authenticateeProviders = make(map[string]Authenticatee) // authentication providers dict
+	providerLock           sync.Mutex
+)
+
+// Register an authentication provider (aka "login provider"). packages that
+// provide Authenticatee implementations should invoke this func in their
+// init() to register.
+func RegisterAuthenticateeProvider(name string, auth Authenticatee) (err error) {
+	providerLock.Lock()
+	defer providerLock.Unlock()
+
+	if _, found := authenticateeProviders[name]; found {
+		err = fmt.Errorf("authentication provider already registered: %v", name)
+	} else {
+		authenticateeProviders[name] = auth
+		log.V(1).Infof("registered authentication provider: %v", name)
+	}
+	return
+}
+
+// Look up an authentication provider by name, returns non-nil and true if such
+// a provider is found.
+func getAuthenticateeProvider(name string) (provider Authenticatee, ok bool) {
+	providerLock.Lock()
+	defer providerLock.Unlock()
+
+	provider, ok = authenticateeProviders[name]
+	return
+}