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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 __GRPC_INTERNAL_SURFACE_CALL_H__
#define __GRPC_INTERNAL_SURFACE_CALL_H__
#include "src/core/channel/channel_stack.h"
#include "src/core/channel/metadata_buffer.h"
#include <grpc/grpc.h>
/* Primitive operation types - grpc_op's get rewritten into these */
typedef enum {
GRPC_IOREQ_RECV_INITIAL_METADATA,
GRPC_IOREQ_RECV_MESSAGE,
GRPC_IOREQ_RECV_TRAILING_METADATA,
GRPC_IOREQ_RECV_STATUS,
GRPC_IOREQ_RECV_STATUS_DETAILS,
GRPC_IOREQ_RECV_CLOSE,
GRPC_IOREQ_SEND_INITIAL_METADATA,
GRPC_IOREQ_SEND_MESSAGE,
GRPC_IOREQ_SEND_TRAILING_METADATA,
GRPC_IOREQ_SEND_STATUS,
GRPC_IOREQ_SEND_CLOSE,
GRPC_IOREQ_OP_COUNT
} grpc_ioreq_op;
typedef union {
grpc_metadata_array *recv_metadata;
grpc_byte_buffer **recv_message;
struct {
void (*set_value)(grpc_status_code status, void *user_data);
void *user_data;
} recv_status;
struct {
char **details;
size_t *details_capacity;
} recv_status_details;
struct {
size_t count;
const grpc_metadata *metadata;
} send_metadata;
grpc_byte_buffer *send_message;
struct {
grpc_status_code code;
const char *details;
} send_status;
} grpc_ioreq_data;
typedef struct {
grpc_ioreq_op op;
grpc_ioreq_data data;
} grpc_ioreq;
typedef void (*grpc_ioreq_completion_func)(grpc_call *call,
grpc_op_error status,
void *user_data);
grpc_call *grpc_call_create(grpc_channel *channel, grpc_completion_queue *cq,
const void *server_transport_data);
void grpc_call_set_completion_queue(grpc_call *call, grpc_completion_queue *cq);
grpc_completion_queue *grpc_call_get_completion_queue(grpc_call *call);
void grpc_call_internal_ref(grpc_call *call);
void grpc_call_internal_unref(grpc_call *call, int allow_immediate_deletion);
/* Helpers for grpc_client, grpc_server filters to publish received data to
the completion queue/surface layer */
void grpc_call_recv_metadata(grpc_call_element *surface_element,
grpc_mdelem *md);
void grpc_call_recv_message(grpc_call_element *surface_element,
grpc_byte_buffer *message);
void grpc_call_read_closed(grpc_call_element *surface_element);
void grpc_call_stream_closed(grpc_call_element *surface_element);
void grpc_call_execute_op(grpc_call *call, grpc_call_op *op);
grpc_call_error grpc_call_start_ioreq_and_call_back(
grpc_call *call, const grpc_ioreq *reqs, size_t nreqs,
grpc_ioreq_completion_func on_complete, void *user_data);
/* Called when it's known that the initial batch of metadata is complete */
void grpc_call_initial_metadata_complete(grpc_call_element *surface_element);
void grpc_call_set_deadline(grpc_call_element *surface_element,
gpr_timespec deadline);
grpc_call_stack *grpc_call_get_call_stack(grpc_call *call);
/* Given the top call_element, get the call object. */
grpc_call *grpc_call_from_top_element(grpc_call_element *surface_element);
#endif /* __GRPC_INTERNAL_SURFACE_CALL_H__ */
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