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package bearer
import (
"context"
"time"
)
// Token provides a type wrapping a bearer token and expiration metadata.
type Token struct {
Value string
CanExpire bool
Expires time.Time
}
// Expired returns if the token's Expires time is before or equal to the time
// provided. If CanExpires is false, Expired will always return false.
func (t Token) Expired(now time.Time) bool {
if !t.CanExpire {
return false
}
now = now.Round(0)
return now.Equal(t.Expires) || now.After(t.Expires)
}
// TokenProvider provides interface for retrieving bearer tokens.
type TokenProvider interface {
RetrieveBearerToken(context.Context) (Token, error)
}
// TokenProviderFunc provides a helper utility to wrap a function as a type
// that implements the TokenProvider interface.
type TokenProviderFunc func(context.Context) (Token, error)
// RetrieveBearerToken calls the wrapped function, returning the Token or
// error.
func (fn TokenProviderFunc) RetrieveBearerToken(ctx context.Context) (Token, error) {
return fn(ctx)
}
// StaticTokenProvider provides a utility for wrapping a static bearer token
// value within an implementation of a token provider.
type StaticTokenProvider struct {
Token Token
}
// RetrieveBearerToken returns the static token specified.
func (s StaticTokenProvider) RetrieveBearerToken(context.Context) (Token, error) {
return s.Token, nil
}
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