grpc/include/grpc++/server_context.h

/*
 *
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#ifndef __GRPCPP_SERVER_CONTEXT_H_
#define __GRPCPP_SERVER_CONTEXT_H_

#include <chrono>
#include <map>

#include "config.h"

struct grpc_metadata;
struct gpr_timespec;

namespace grpc {

template <class R> class ServerAsyncReader;
template <class W> class ServerAsyncWriter;
template <class R, class W> class ServerAsyncReaderWriter;
template <class R> class ServerReader;
template <class W> class ServerWriter;
template <class R, class W> class ServerReaderWriter;

class CallOpBuffer;
class Server;

// Interface of server side rpc context.
class ServerContext {
 public:
  virtual ~ServerContext() {}

  std::chrono::system_clock::time_point absolute_deadline() { return deadline_; }

  void AddInitialMetadata(const grpc::string& key, const grpc::string& value);
  void AddTrailingMetadata(const grpc::string& key, const grpc::string& value);

 private:
  friend class ::grpc::Server;
  template <class R> friend class ::grpc::ServerAsyncReader;
  template <class W> friend class ::grpc::ServerAsyncWriter;
  template <class R, class W> friend class ::grpc::ServerAsyncReaderWriter;
  template <class R> friend class ::grpc::ServerReader;
  template <class W> friend class ::grpc::ServerWriter;
  template <class R, class W> friend class ::grpc::ServerReaderWriter;
  
  ServerContext(gpr_timespec deadline, grpc_metadata *metadata, size_t metadata_count);

  const std::chrono::system_clock::time_point deadline_;
  bool sent_initial_metadata_ = false;
  std::multimap<grpc::string, grpc::string> client_metadata_;
  std::multimap<grpc::string, grpc::string> initial_metadata_;
  std::multimap<grpc::string, grpc::string> trailing_metadata_;
};

}  // namespace grpc

#endif  // __GRPCPP_SERVER_CONTEXT_H_