src/plugins/ctf/lttng-live/viewer-connection.hpp

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   5  */
   6
   7 #ifndef LTTNG_LIVE_VIEWER_CONNECTION_H
   8 #define LTTNG_LIVE_VIEWER_CONNECTION_H
   9
  10 #include <string>
  11
  12 #include <glib.h>
  13 #include <stdint.h>
  14
  15 #include <babeltrace2/babeltrace.h>
  16
  17 #include "compat/socket.hpp"
  18 #include "cpp-common/bt2c/glib-up.hpp"
  19 #include "cpp-common/bt2c/logging.hpp"
  20
  21 #define LTTNG_DEFAULT_NETWORK_VIEWER_PORT 5344
  22
  23 #define LTTNG_LIVE_MAJOR 2
  24 #define LTTNG_LIVE_MINOR 4
  25
  26 enum lttng_live_viewer_status
  27 {
  28     LTTNG_LIVE_VIEWER_STATUS_OK = 0,
  29     LTTNG_LIVE_VIEWER_STATUS_ERROR = -1,
  30     LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED = -2,
  31 };
  32
  33 enum lttng_live_get_one_metadata_status
  34 {
  35     /* The end of the metadata stream was reached. */
  36     LTTNG_LIVE_GET_ONE_METADATA_STATUS_END = 1,
  37     /* One metadata packet was received and written to file. */
  38     LTTNG_LIVE_GET_ONE_METADATA_STATUS_OK = LTTNG_LIVE_VIEWER_STATUS_OK,
  39     /*
  40      * A critical error occurred when contacting the relay or while
  41      * handling its response.
  42      */
  43     LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR = LTTNG_LIVE_VIEWER_STATUS_ERROR,
  44
  45     LTTNG_LIVE_GET_ONE_METADATA_STATUS_INTERRUPTED = LTTNG_LIVE_VIEWER_STATUS_INTERRUPTED,
  46
  47     /* The metadata stream was not found on the relay. */
  48     LTTNG_LIVE_GET_ONE_METADATA_STATUS_CLOSED = -3,
  49 };
  50
  51 struct live_viewer_connection
  52 {
  53     using UP = std::unique_ptr<live_viewer_connection>;
  54
  55     explicit live_viewer_connection(const bt2c::Logger& parentLogger) :
  56         logger {parentLogger, "PLUGIN/SRC.CTF.LTTNG-LIVE/VIEWER"}
  57     {
  58     }
  59
  60     ~live_viewer_connection();
  61
  62     bt2c::Logger logger;
  63
  64     std::string url;
  65
  66     bt2c::GStringUP relay_hostname;
  67     bt2c::GStringUP target_hostname;
  68     bt2c::GStringUP session_name;
  69     bt2c::GStringUP proto;
  70
  71     BT_SOCKET control_sock {};
  72     int port = 0;
  73
  74     int32_t major = 0;
  75     int32_t minor = 0;
  76
  77     bool in_query = false;
  78     struct lttng_live_msg_iter *lttng_live_msg_iter = nullptr;
  79 };
  80
  81 struct packet_index_time
  82 {
  83     uint64_t timestamp_begin;
  84     uint64_t timestamp_end;
  85 };
  86
  87 struct packet_index
  88 {
  89     off_t offset;          /* offset of the packet in the file, in bytes */
  90     int64_t data_offset;   /* offset of data within the packet, in bits */
  91     uint64_t packet_size;  /* packet size, in bits */
  92     uint64_t content_size; /* content size, in bits */
  93     uint64_t events_discarded;
  94     uint64_t events_discarded_len;      /* length of the field, in bits */
  95     struct packet_index_time ts_cycles; /* timestamp in cycles */
  96     struct packet_index_time ts_real;   /* realtime timestamp */
  97     /* CTF_INDEX 1.0 limit */
  98     uint64_t stream_instance_id; /* ID of the channel instance */
  99     uint64_t packet_seq_num;     /* packet sequence number */
 100 };
 101
 102 enum lttng_live_viewer_status
 103 live_viewer_connection_create(const char *url, bool in_query,
 104                               struct lttng_live_msg_iter *lttng_live_msg_iter,
 105                               const bt2c::Logger& parentLogger, live_viewer_connection::UP& viewer);
 106
 107 enum lttng_live_viewer_status
 108 lttng_live_create_viewer_session(struct lttng_live_msg_iter *lttng_live_msg_iter);
 109
 110 bt_component_class_query_method_status
 111 live_viewer_connection_list_sessions(struct live_viewer_connection *viewer_connection,
 112                                      bt2::Value::Shared& user_result);
 113
 114 #endif /* LTTNG_LIVE_VIEWER_CONNECTION_H */