C++GRPC::实验性:拦截器如何从自定义拦截器返回状态和消息
我正在我的c++GRPC项目中创建一个自定义的inteceptor,以检查授权持有者令牌是否有效或用户是否经过身份验证,因此我创建了一个拦截器来获取元数据并验证令牌,如果令牌是OK的,我将执行继续方法,此时一切正常,但是...
当令牌无效时,如何从侦听器返回GRPC::Status::未经身份验证的错误?
我尝试了方法。ModifySendMessage和Status,但它不工作和崩溃
void AuthInterceptor::Intercept(grpc::experimental::InterceptorBatchMethods *methods) {
if (methods->QueryInterceptionHookPoint(
grpc::experimental::InterceptionHookPoints::POST_RECV_INITIAL_METADATA)) {
auto map = methods->GetRecvInitialMetadata();
std::multimap<grpc::string_ref, grpc::string_ref>::iterator itr;
for (itr = map->begin(); itr != map->end(); ++itr) {
if (itr->first == "authorization") {
std::string erase = "Bearer ";
std::size_t pos = itr->second.find(erase);
std::string value = itr->second.data();
std::string token = value.erase(pos, erase.length());
TokenStatus tokenStatus = Security::Token::validateToken(token);
if (tokenStatus.valid) {
std::cout << " token is valid " << token << "
";
//continue
methods->Proceed();
} else {
std::cout << " token is no valid " << token << "
";
// i need to return or throw
// return Status(grpc::StatusCode::UNAUTHENTICATED, "you are not UNAUTHENTICATED");
}
} else {
// i need to return or throw
// return Status(grpc::StatusCode::UNAUTHENTICATED, "you are not UNAUTHENTICATED");
}
}
}
}
我如何才能返回 返回状态(GRPC::StatusCode::未验证,e.What()); 拦截器中的令牌无效时
解决方案
这是旧的,但请尝试methods->ModifySendStatus(grpc::Status const & status);
。
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