src/common/relayd/relayd.hpp

   1 /*
   2  * Copyright (C) 2012 David Goulet <dgoulet@efficios.com>
   3  *
   4  * SPDX-License-Identifier: GPL-2.0-only
   5  *
   6  */
   7
   8 #ifndef _RELAYD_H
   9 #define _RELAYD_H
  10
  11 #include <stdbool.h>
  12 #include <unistd.h>
  13
  14 #include <common/dynamic-array.hpp>
  15 #include <common/sessiond-comm/relayd.hpp>
  16 #include <common/sessiond-comm/sessiond-comm.hpp>
  17 #include <common/trace-chunk.hpp>
  18 #include <lttng/trace-format-descriptor-internal.hpp>
  19
  20 struct relayd_stream_rotation_position {
  21         uint64_t stream_id;
  22         /*
  23          * Packet sequence number of the first packet belonging to the new
  24          * "destination" trace chunk to which the stream is rotating.
  25          *
  26          * Ignored for metadata streams.
  27          */
  28         uint64_t rotate_at_seq_num;
  29 };
  30
  31 int relayd_connect(struct lttcomm_relayd_sock *sock);
  32 int relayd_close(struct lttcomm_relayd_sock *sock);
  33 int relayd_create_session(struct lttcomm_relayd_sock *rsock,
  34                 uint64_t *relayd_session_id,
  35                 const char *session_name,
  36                 const char *hostname,
  37                 const char *base_path,
  38                 int session_live_timer,
  39                 unsigned int snapshot,
  40                 uint64_t sessiond_session_id,
  41                 const lttng_uuid& sessiond_uuid,
  42                 const uint64_t *current_chunk_id,
  43                 time_t creation_time,
  44                 bool session_name_contains_creation_time,
  45                 char *output_path,
  46                 lttng::trace_format_descriptor& trace_format);
  47 int relayd_add_stream(struct lttcomm_relayd_sock *sock,
  48                 const char *channel_name,
  49                 const char *domain_name,
  50                 const char *pathname,
  51                 uint64_t *stream_id,
  52                 uint64_t tracefile_size,
  53                 uint64_t tracefile_count,
  54                 struct lttng_trace_chunk *trace_chunk);
  55 int relayd_streams_sent(struct lttcomm_relayd_sock *rsock);
  56 int relayd_send_close_stream(struct lttcomm_relayd_sock *sock, uint64_t stream_id,
  57                 uint64_t last_net_seq_num);
  58 int relayd_version_check(struct lttcomm_relayd_sock *sock);
  59 int relayd_start_data(struct lttcomm_relayd_sock *sock);
  60 int relayd_send_metadata(struct lttcomm_relayd_sock *sock, size_t len);
  61 int relayd_send_data_hdr(struct lttcomm_relayd_sock *sock,
  62                 struct lttcomm_relayd_data_hdr *hdr, size_t size);
  63 int relayd_data_pending(struct lttcomm_relayd_sock *sock, uint64_t stream_id,
  64                 uint64_t last_net_seq_num);
  65 int relayd_quiescent_control(struct lttcomm_relayd_sock *sock,
  66                 uint64_t metadata_stream_id);
  67 int relayd_begin_data_pending(struct lttcomm_relayd_sock *sock, uint64_t id);
  68 int relayd_end_data_pending(struct lttcomm_relayd_sock *sock, uint64_t id,
  69                 unsigned int *is_data_inflight);
  70 int relayd_send_index(struct lttcomm_relayd_sock *rsock,
  71                 struct ctf_packet_index *index, uint64_t relay_stream_id,
  72                 uint64_t net_seq_num);
  73 int relayd_reset_metadata(struct lttcomm_relayd_sock *rsock,
  74                 uint64_t stream_id, uint64_t version);
  75 /* `positions` is an array of `stream_count` relayd_stream_rotation_position. */
  76 int relayd_rotate_streams(struct lttcomm_relayd_sock *sock,
  77                 unsigned int stream_count, const uint64_t *new_chunk_id,
  78                 const struct relayd_stream_rotation_position *positions);
  79 int relayd_create_trace_chunk(struct lttcomm_relayd_sock *sock,
  80                 struct lttng_trace_chunk *chunk);
  81 int relayd_close_trace_chunk(
  82                 struct lttcomm_relayd_sock *sock, struct lttng_trace_chunk *chunk, char *path);
  83 int relayd_trace_chunk_exists(
  84                 struct lttcomm_relayd_sock *sock, uint64_t chunk_id, bool *chunk_exists);
  85 enum lttng_error_code relayd_get_configuration(struct lttcomm_relayd_sock *sock,
  86                 uint64_t query_flags,
  87                 uint64_t& result_flags,
  88                 uint64_t *supported_trace_format);
  89
  90 #endif /* _RELAYD_H */