sessiond: notification: add support for async commands
[lttng-tools.git] / src / bin / lttng-sessiond / notification-thread-commands.h
1 /*
2 * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
3 *
4 * SPDX-License-Identifier: GPL-2.0-only
5 *
6 */
7
8 #ifndef NOTIFICATION_THREAD_COMMANDS_H
9 #define NOTIFICATION_THREAD_COMMANDS_H
10
11 #include <lttng/domain.h>
12 #include <lttng/lttng-error.h>
13 #include <urcu/rculfhash.h>
14 #include "notification-thread.h"
15 #include "notification-thread-internal.h"
16 #include "notification-thread-events.h"
17 #include <common/waiter.h>
18 #include <stdbool.h>
19
20 struct notification_thread_data;
21 struct lttng_trigger;
22
23 enum notification_thread_command_type {
24 NOTIFICATION_COMMAND_TYPE_REGISTER_TRIGGER,
25 NOTIFICATION_COMMAND_TYPE_UNREGISTER_TRIGGER,
26 NOTIFICATION_COMMAND_TYPE_ADD_CHANNEL,
27 NOTIFICATION_COMMAND_TYPE_REMOVE_CHANNEL,
28 NOTIFICATION_COMMAND_TYPE_SESSION_ROTATION_ONGOING,
29 NOTIFICATION_COMMAND_TYPE_SESSION_ROTATION_COMPLETED,
30 NOTIFICATION_COMMAND_TYPE_QUIT,
31 };
32
33 struct notification_thread_command {
34 struct cds_list_head cmd_list_node;
35
36 enum notification_thread_command_type type;
37 union {
38 /* Register/Unregister trigger. */
39 struct lttng_trigger *trigger;
40 /* Add channel. */
41 struct {
42 struct {
43 const char *name;
44 uid_t uid;
45 gid_t gid;
46 } session;
47 struct {
48 const char *name;
49 enum lttng_domain_type domain;
50 uint64_t key;
51 uint64_t capacity;
52 } channel;
53 } add_channel;
54 /* Remove channel. */
55 struct {
56 uint64_t key;
57 enum lttng_domain_type domain;
58 } remove_channel;
59 struct {
60 const char *session_name;
61 uid_t uid;
62 gid_t gid;
63 uint64_t trace_archive_chunk_id;
64 struct lttng_trace_archive_location *location;
65 } session_rotation;
66 } parameters;
67
68 /* lttng_waiter on which to wait for command reply (optional). */
69 struct lttng_waiter reply_waiter;
70 enum lttng_error_code reply_code;
71 bool is_async;
72 };
73
74 enum lttng_error_code notification_thread_command_register_trigger(
75 struct notification_thread_handle *handle,
76 struct lttng_trigger *trigger);
77
78 enum lttng_error_code notification_thread_command_unregister_trigger(
79 struct notification_thread_handle *handle,
80 struct lttng_trigger *trigger);
81
82 enum lttng_error_code notification_thread_command_add_channel(
83 struct notification_thread_handle *handle,
84 char *session_name, uid_t session_uid, gid_t session_gid,
85 char *channel_name, uint64_t key,
86 enum lttng_domain_type domain, uint64_t capacity);
87
88 enum lttng_error_code notification_thread_command_remove_channel(
89 struct notification_thread_handle *handle,
90 uint64_t key, enum lttng_domain_type domain);
91
92 enum lttng_error_code notification_thread_command_session_rotation_ongoing(
93 struct notification_thread_handle *handle,
94 const char *session_name, uid_t session_uid, gid_t session_gid,
95 uint64_t trace_archive_chunk_id);
96
97 /* Ownership of location is transferred. */
98 enum lttng_error_code notification_thread_command_session_rotation_completed(
99 struct notification_thread_handle *handle,
100 const char *session_name, uid_t session_uid, gid_t session_gid,
101 uint64_t trace_archive_chunk_id,
102 struct lttng_trace_archive_location *location);
103
104 void notification_thread_command_quit(
105 struct notification_thread_handle *handle);
106
107 #endif /* NOTIFICATION_THREAD_COMMANDS_H */
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