/*
 * SPDX-FileCopyrightText: 2012 David Goulet <dgoulet@efficios.com>
 *
 * SPDX-License-Identifier: GPL-2.0-only
 *
 */

#ifndef _RELAYD_H
#define _RELAYD_H

#include <common/dynamic-array.hpp>
#include <common/sessiond-comm/relayd.hpp>
#include <common/sessiond-comm/sessiond-comm.hpp>
#include <common/trace-chunk.hpp>

#include <lttng/session-descriptor.h>

#include <stdbool.h>
#include <unistd.h>

struct relayd_stream_rotation_position {
	uint64_t stream_id;
	/*
	 * Packet sequence number of the first packet belonging to the new
	 * "destination" trace chunk to which the stream is rotating.
	 *
	 * Ignored for metadata streams.
	 */
	uint64_t rotate_at_seq_num;
};

int relayd_connect(struct lttcomm_relayd_sock *sock);
int relayd_close(struct lttcomm_relayd_sock *sock);
int relayd_create_session(struct lttcomm_relayd_sock *rsock,
			  uint64_t *relayd_session_id,
			  const char *session_name,
			  const char *hostname,
			  const char *base_path,
			  int session_live_timer,
			  unsigned int snapshot,
			  uint64_t sessiond_session_id,
			  const lttng_uuid& sessiond_uuid,
			  const uint64_t *current_chunk_id,
			  time_t creation_time,
			  bool session_name_contains_creation_time,
			  enum lttng_trace_format trace_format,
			  char *output_path);
int relayd_add_stream(struct lttcomm_relayd_sock *sock,
		      const char *channel_name,
		      const char *domain_name,
		      const char *pathname,
		      uint64_t *stream_id,
		      uint64_t tracefile_size,
		      uint64_t tracefile_count,
		      struct lttng_trace_chunk *trace_chunk);
int relayd_streams_sent(struct lttcomm_relayd_sock *rsock);
int relayd_send_close_stream(struct lttcomm_relayd_sock *sock,
			     uint64_t stream_id,
			     uint64_t last_net_seq_num);
int relayd_version_check(struct lttcomm_relayd_sock *sock);
int relayd_start_data(struct lttcomm_relayd_sock *sock);
int relayd_send_metadata(struct lttcomm_relayd_sock *sock, size_t len);
int relayd_send_data_hdr(struct lttcomm_relayd_sock *sock,
			 struct lttcomm_relayd_data_hdr *hdr,
			 size_t size);
int relayd_data_pending(struct lttcomm_relayd_sock *sock,
			uint64_t stream_id,
			uint64_t last_net_seq_num);
int relayd_quiescent_control(struct lttcomm_relayd_sock *sock, uint64_t metadata_stream_id);
int relayd_begin_data_pending(struct lttcomm_relayd_sock *sock, uint64_t id);
int relayd_end_data_pending(struct lttcomm_relayd_sock *sock,
			    uint64_t id,
			    unsigned int *is_data_inflight);
int relayd_send_index(lttcomm_relayd_sock& rsock,
		      const ctf_packet_index& index,
		      uint64_t relay_stream_id,
		      uint64_t net_seq_num);
int relayd_reset_metadata(struct lttcomm_relayd_sock *rsock, uint64_t stream_id, uint64_t version);
/* `positions` is an array of `stream_count` relayd_stream_rotation_position. */
int relayd_rotate_streams(struct lttcomm_relayd_sock *sock,
			  unsigned int stream_count,
			  const uint64_t *new_chunk_id,
			  const struct relayd_stream_rotation_position *positions);
int relayd_create_trace_chunk(struct lttcomm_relayd_sock *sock, struct lttng_trace_chunk *chunk);
int relayd_close_trace_chunk(struct lttcomm_relayd_sock *sock,
			     struct lttng_trace_chunk *chunk,
			     char *path);
int relayd_trace_chunk_exists(struct lttcomm_relayd_sock *sock,
			      uint64_t chunk_id,
			      bool *chunk_exists);
int relayd_get_configuration(struct lttcomm_relayd_sock *sock,
			     uint64_t query_flags,
			     uint64_t *result_flags);

#endif /* _RELAYD_H */
