/*-
 *   BSD LICENSE
 *
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 *   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.
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 *       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
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 */

/**
 * \file
 * JSON-RPC 2.0 server implementation
 */

#ifndef SPDK_JSONRPC_H_
#define SPDK_JSONRPC_H_

#include "spdk/json.h"

#include <stdlib.h>
#include <inttypes.h>
#include <stdbool.h>
#include <stddef.h>

#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/socket.h>

#define SPDK_JSONRPC_ERROR_PARSE_ERROR		-32700
#define SPDK_JSONRPC_ERROR_INVALID_REQUEST	-32600
#define SPDK_JSONRPC_ERROR_METHOD_NOT_FOUND	-32601
#define SPDK_JSONRPC_ERROR_INVALID_PARAMS	-32602
#define SPDK_JSONRPC_ERROR_INTERNAL_ERROR	-32603

struct spdk_jsonrpc_server;
struct spdk_jsonrpc_server_conn;

/**
 * User callback to handle a single JSON-RPC request.
 *
 * The user should respond by calling one of spdk_jsonrpc_begin_result() or
 *  spdk_jsonrpc_send_error_response().
 */
typedef void (*spdk_jsonrpc_handle_request_fn)(
	struct spdk_jsonrpc_server_conn *conn,
	const struct spdk_json_val *method,
	const struct spdk_json_val *params,
	const struct spdk_json_val *id);

struct spdk_jsonrpc_server *spdk_jsonrpc_server_listen(int domain, int protocol,
		struct sockaddr *listen_addr, socklen_t addrlen, spdk_jsonrpc_handle_request_fn handle_request);

int spdk_jsonrpc_server_poll(struct spdk_jsonrpc_server *server);

void spdk_jsonrpc_server_shutdown(struct spdk_jsonrpc_server *server);

struct spdk_json_write_ctx *spdk_jsonrpc_begin_result(struct spdk_jsonrpc_server_conn *conn,
		const struct spdk_json_val *id);
void spdk_jsonrpc_end_result(struct spdk_jsonrpc_server_conn *conn, struct spdk_json_write_ctx *w);

void spdk_jsonrpc_send_error_response(struct spdk_jsonrpc_server_conn *conn,
				      const struct spdk_json_val *id, int error_code, const char *msg);

#endif