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/*
*
* Copyright 2018 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GRPCPP_IMPL_CODEGEN_CLIENT_INTERCEPTOR_H
#define GRPCPP_IMPL_CODEGEN_CLIENT_INTERCEPTOR_H
#include <vector>
#include <grpc/impl/codegen/log.h>
#include <grpcpp/impl/codegen/interceptor.h>
#include <grpcpp/impl/codegen/string_ref.h>
namespace grpc {
class ClientContext;
class Channel;
namespace internal {
class InterceptorBatchMethodsImpl;
}
namespace experimental {
class ClientRpcInfo;
class ClientInterceptorFactoryInterface {
public:
virtual ~ClientInterceptorFactoryInterface() {}
virtual Interceptor* CreateClientInterceptor(ClientRpcInfo* info) = 0;
};
class ClientRpcInfo {
public:
ClientRpcInfo() {}
ClientRpcInfo(grpc::ClientContext* ctx, const char* method,
grpc::Channel* channel,
const std::vector<std::unique_ptr<
experimental::ClientInterceptorFactoryInterface>>& creators)
: ctx_(ctx), method_(method), channel_(channel) {
for (const auto& creator : creators) {
interceptors_.push_back(std::unique_ptr<experimental::Interceptor>(
creator->CreateClientInterceptor(this)));
}
}
~ClientRpcInfo(){};
ClientRpcInfo(const ClientRpcInfo&) = delete;
ClientRpcInfo(ClientRpcInfo&&) = default;
ClientRpcInfo& operator=(ClientRpcInfo&&) = default;
// Getter methods
const char* method() { return method_; }
Channel* channel() { return channel_; }
grpc::ClientContext* client_context() { return ctx_; }
public:
// Runs interceptor at pos \a pos.
void RunInterceptor(
experimental::InterceptorBatchMethods* interceptor_methods,
unsigned int pos) {
GPR_CODEGEN_ASSERT(pos < interceptors_.size());
interceptors_[pos]->Intercept(interceptor_methods);
}
private:
grpc::ClientContext* ctx_ = nullptr;
const char* method_ = nullptr;
grpc::Channel* channel_ = nullptr;
std::vector<std::unique_ptr<experimental::Interceptor>> interceptors_;
bool hijacked_ = false;
int hijacked_interceptor_ = false;
friend class internal::InterceptorBatchMethodsImpl;
};
} // namespace experimental
} // namespace grpc
#endif // GRPCPP_IMPL_CODEGEN_CLIENT_INTERCEPTOR_H
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