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/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef GRPCXX_IMPL_CALL_H
#define GRPCXX_IMPL_CALL_H
#include <grpc/grpc.h>
#include <grpc++/completion_queue.h>
#include <grpc++/config.h>
#include <grpc++/status.h>
#include <memory>
#include <map>
struct grpc_call;
struct grpc_op;
namespace grpc {
class ByteBuffer;
class Call;
class CallOpBuffer : public CompletionQueueTag {
public:
CallOpBuffer();
~CallOpBuffer();
void Reset(void* next_return_tag);
// Does not take ownership.
void AddSendInitialMetadata(
std::multimap<grpc::string, grpc::string>* metadata);
void AddSendInitialMetadata(ClientContext* ctx);
void AddRecvInitialMetadata(ClientContext* ctx);
void AddSendMessage(const grpc::protobuf::Message& message);
void AddSendMessage(const ByteBuffer& message);
void AddRecvMessage(grpc::protobuf::Message* message);
void AddRecvMessage(ByteBuffer* message);
void AddClientSendClose();
void AddClientRecvStatus(ClientContext* ctx, Status* status);
void AddServerSendStatus(std::multimap<grpc::string, grpc::string>* metadata,
const Status& status);
void AddServerRecvClose(bool* cancelled);
// INTERNAL API:
// Convert to an array of grpc_op elements
void FillOps(grpc_op* ops, size_t* nops);
// Called by completion queue just prior to returning from Next() or Pluck()
bool FinalizeResult(void** tag, bool* status) GRPC_OVERRIDE;
void set_max_message_size(int max_message_size) {
max_message_size_ = max_message_size;
}
bool got_message;
private:
void* return_tag_;
// Send initial metadata
bool send_initial_metadata_;
size_t initial_metadata_count_;
grpc_metadata* initial_metadata_;
// Recv initial metadta
std::multimap<grpc::string, grpc::string>* recv_initial_metadata_;
grpc_metadata_array recv_initial_metadata_arr_;
// Send message
const grpc::protobuf::Message* send_message_;
const ByteBuffer* send_message_buffer_;
grpc_byte_buffer* send_buf_;
// Recv message
grpc::protobuf::Message* recv_message_;
ByteBuffer* recv_message_buffer_;
grpc_byte_buffer* recv_buf_;
int max_message_size_;
// Client send close
bool client_send_close_;
// Client recv status
std::multimap<grpc::string, grpc::string>* recv_trailing_metadata_;
Status* recv_status_;
grpc_metadata_array recv_trailing_metadata_arr_;
grpc_status_code status_code_;
char* status_details_;
size_t status_details_capacity_;
// Server send status
bool send_status_available_;
grpc_status_code send_status_code_;
grpc::string send_status_details_;
size_t trailing_metadata_count_;
grpc_metadata* trailing_metadata_;
int cancelled_buf_;
bool* recv_closed_;
};
// Channel and Server implement this to allow them to hook performing ops
class CallHook {
public:
virtual ~CallHook() {}
virtual void PerformOpsOnCall(CallOpBuffer* ops, Call* call) = 0;
};
// Straightforward wrapping of the C call object
class Call GRPC_FINAL {
public:
/* call is owned by the caller */
Call(grpc_call* call, CallHook* call_hook_, CompletionQueue* cq);
Call(grpc_call* call, CallHook* call_hook_, CompletionQueue* cq,
int max_message_size);
void PerformOps(CallOpBuffer* buffer);
grpc_call* call() { return call_; }
CompletionQueue* cq() { return cq_; }
int max_message_size() { return max_message_size_; }
private:
CallHook* call_hook_;
CompletionQueue* cq_;
grpc_call* call_;
int max_message_size_;
};
} // namespace grpc
#endif // GRPCXX_IMPL_CALL_H
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