Example #1
0
// GoBlessingStore creates an instance of security.BlessingStore that uses the
// provided Java BlessingStore as its underlying implementation.
func GoBlessingStore(env jutil.Env, jBlessingStore jutil.Object) (security.BlessingStore, error) {
	if jBlessingStore.IsNull() {
		return nil, nil
	}
	if jutil.IsInstanceOf(env, jBlessingStore, jBlessingStoreImplClass) {
		// Called with our implementation of BlessingStore, which maintains a Go reference - use it.
		ref, err := jutil.JLongField(env, jBlessingStore, "nativeRef")
		if err != nil {
			return nil, err
		}
		return (*(*security.BlessingStore)(jutil.GoRefValue(jutil.Ref(ref)))), nil
	}
	// Reference Java BlessingStore; it will be de-referenced when the Go
	// BlessingStore created below is garbage-collected (through the finalizer
	// callback we setup just below).
	jBlessingStore = jutil.NewGlobalRef(env, jBlessingStore)
	s := &blessingStore{
		jBlessingStore: jBlessingStore,
	}
	runtime.SetFinalizer(s, func(s *blessingStore) {
		env, freeFunc := jutil.GetEnv()
		defer freeFunc()
		jutil.DeleteGlobalRef(env, s.jBlessingStore)
	})
	return s, nil
}
Example #2
0
// GoAuthorizer converts the given Java authorizer into a Go authorizer.
func GoAuthorizer(env jutil.Env, jAuth jutil.Object) (security.Authorizer, error) {
	if jAuth.IsNull() {
		return nil, nil
	}
	if jutil.IsInstanceOf(env, jAuth, jPermissionsAuthorizerClass) {
		// Called with our implementation of Authorizer, which maintains a Go reference - use it.
		ref, err := jutil.JLongField(env, jAuth, "nativeRef")
		if err != nil {
			return nil, err
		}
		return *(*security.Authorizer)(jutil.GoRefValue(jutil.Ref(ref))), nil
	}
	// Reference Java dispatcher; it will be de-referenced when the go
	// dispatcher created below is garbage-collected (through the finalizer
	// callback we setup below).
	jAuth = jutil.NewGlobalRef(env, jAuth)
	a := &authorizer{
		jAuth: jAuth,
	}
	runtime.SetFinalizer(a, func(a *authorizer) {
		env, freeFunc := jutil.GetEnv()
		defer freeFunc()
		jutil.DeleteGlobalRef(env, a.jAuth)
	})
	return a, nil
}