Commit | Line | Data |
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f1e16794 | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2012 David Goulet <dgoulet@efficios.com> |
f1e16794 | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: GPL-2.0-only |
f1e16794 | 5 | * |
f1e16794 DG |
6 | */ |
7 | ||
8 | #ifndef _CONSUMER_H | |
9 | #define _CONSUMER_H | |
10 | ||
c9e313bc SM |
11 | #include <common/consumer/consumer.hpp> |
12 | #include <common/hashtable/hashtable.hpp> | |
00e2e675 | 13 | #include <lttng/lttng.h> |
6addfa37 | 14 | #include <urcu/ref.h> |
7966af57 | 15 | #include <algorithm> |
00e2e675 | 16 | |
c9e313bc | 17 | #include "snapshot.hpp" |
6dc3064a DG |
18 | |
19 | struct snapshot; | |
20 | struct snapshot_output; | |
b178f53e | 21 | struct ltt_session; |
6dc3064a | 22 | |
7966af57 SM |
23 | /* |
24 | * Needed until we use C++14, where std::max is constexpr. | |
25 | * | |
26 | * Use a static_assert so we remember to remove it when we upgrade to a newer | |
27 | * C++. | |
28 | */ | |
29 | static_assert(__cplusplus == 201103L, ""); | |
30 | template <typename T> | |
31 | constexpr T max_constexpr(T l, T r) | |
32 | { | |
33 | return l > r ? l : r; | |
34 | } | |
35 | ||
00e2e675 DG |
36 | enum consumer_dst_type { |
37 | CONSUMER_DST_LOCAL, | |
38 | CONSUMER_DST_NET, | |
39 | }; | |
f1e16794 | 40 | |
d2956687 JG |
41 | enum consumer_trace_chunk_exists_status { |
42 | CONSUMER_TRACE_CHUNK_EXISTS_STATUS_EXISTS_LOCAL, | |
43 | CONSUMER_TRACE_CHUNK_EXISTS_STATUS_EXISTS_REMOTE, | |
44 | CONSUMER_TRACE_CHUNK_EXISTS_STATUS_UNKNOWN_CHUNK, | |
45 | }; | |
46 | ||
173af62f | 47 | struct consumer_socket { |
4ce514c4 DG |
48 | /* |
49 | * File descriptor. This is just a reference to the consumer data meaning | |
9363801e DG |
50 | * that every access must be locked and checked for a possible invalid |
51 | * value. | |
4ce514c4 | 52 | */ |
9363801e | 53 | int *fd_ptr; |
4ce514c4 | 54 | |
173af62f DG |
55 | /* |
56 | * To use this socket (send/recv), this lock MUST be acquired. | |
57 | */ | |
58 | pthread_mutex_t *lock; | |
2f77fc4b DG |
59 | |
60 | /* | |
61 | * Indicates if the socket was registered by a third part | |
62 | * (REGISTER_CONSUMER) or is the spawn consumer of the session daemon. | |
63 | * During the destroy phase of a consumer output, we close the socket if | |
64 | * this flag is set to 1 since we don't need the fd anymore. | |
65 | */ | |
66 | unsigned int registered; | |
67 | ||
ffe60014 DG |
68 | /* Flag if network sockets were sent to the consumer. */ |
69 | unsigned int control_sock_sent; | |
70 | unsigned int data_sock_sent; | |
71 | ||
173af62f | 72 | struct lttng_ht_node_ulong node; |
6dc3064a DG |
73 | |
74 | enum lttng_consumer_type type; | |
173af62f DG |
75 | }; |
76 | ||
f1e16794 | 77 | struct consumer_data { |
cd9adb8b | 78 | explicit consumer_data (lttng_consumer_type type_) |
7966af57 SM |
79 | : type(type_) |
80 | {} | |
81 | ||
f1e16794 DG |
82 | enum lttng_consumer_type type; |
83 | ||
f1e16794 | 84 | /* Mutex to control consumerd pid assignation */ |
7966af57 SM |
85 | pthread_mutex_t pid_mutex = PTHREAD_MUTEX_INITIALIZER; |
86 | pid_t pid = 0; | |
f1e16794 | 87 | |
7966af57 | 88 | int err_sock = -1; |
331744e3 | 89 | /* These two sockets uses the cmd_unix_sock_path. */ |
7966af57 | 90 | int cmd_sock = -1; |
e9404c27 JG |
91 | /* |
92 | * Write-end of the channel monitoring pipe to be passed to the | |
93 | * consumer. | |
94 | */ | |
7966af57 | 95 | int channel_monitor_pipe = -1; |
4ce514c4 DG |
96 | /* |
97 | * The metadata socket object is handled differently and only created | |
98 | * locally in this object thus it's the only reference available in the | |
9363801e DG |
99 | * session daemon. For that reason, a variable for the fd is required and |
100 | * the metadata socket fd points to it. | |
4ce514c4 | 101 | */ |
7966af57 SM |
102 | int metadata_fd = 0; |
103 | struct consumer_socket metadata_sock {}; | |
f1e16794 DG |
104 | |
105 | /* consumer error and command Unix socket path */ | |
7966af57 SM |
106 | const char *err_unix_sock_path = nullptr; |
107 | const char *cmd_unix_sock_path = nullptr; | |
44a5e5eb | 108 | |
92db7cdc DG |
109 | /* |
110 | * This lock has two purposes. It protects any change to the consumer | |
111 | * socket and make sure only one thread uses this object for read/write | |
112 | * operations. | |
113 | */ | |
7966af57 | 114 | pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; |
f1e16794 DG |
115 | }; |
116 | ||
00e2e675 DG |
117 | /* |
118 | * Network URIs | |
119 | */ | |
120 | struct consumer_net { | |
121 | /* | |
122 | * Indicate if URI type is set. Those flags should only be set when the | |
123 | * created URI is done AND valid. | |
124 | */ | |
125 | int control_isset; | |
126 | int data_isset; | |
127 | ||
128 | /* | |
129 | * The following two URIs MUST have the same destination address for | |
130 | * network streaming to work. Network hop are not yet supported. | |
131 | */ | |
132 | ||
133 | /* Control path for network streaming. */ | |
134 | struct lttng_uri control; | |
135 | ||
136 | /* Data path for network streaming. */ | |
137 | struct lttng_uri data; | |
2b29c638 JD |
138 | |
139 | /* <hostname>/<session-name> */ | |
140 | char base_dir[PATH_MAX]; | |
00e2e675 DG |
141 | }; |
142 | ||
143 | /* | |
144 | * Consumer output object describing where and how to send data. | |
145 | */ | |
146 | struct consumer_output { | |
6addfa37 MD |
147 | struct urcu_ref ref; /* Refcount */ |
148 | ||
00e2e675 DG |
149 | /* If the consumer is enabled meaning that should be used */ |
150 | unsigned int enabled; | |
151 | enum consumer_dst_type type; | |
173af62f | 152 | |
00e2e675 DG |
153 | /* |
154 | * The net_seq_index is the index of the network stream on the consumer | |
3f8e211f DG |
155 | * side. It tells the consumer which streams goes to which relayd with this |
156 | * index. The relayd sockets are index with it on the consumer side. | |
00e2e675 | 157 | */ |
d88aee68 | 158 | uint64_t net_seq_index; |
b31610f2 JD |
159 | /* Store the relay protocol in use if the session is remote. */ |
160 | uint32_t relay_major_version; | |
161 | uint32_t relay_minor_version; | |
173af62f | 162 | |
eacb7b6f MD |
163 | /* True if relayd supports the clear feature. */ |
164 | bool relay_allows_clear; | |
165 | ||
00e2e675 | 166 | /* |
366a9222 | 167 | * Subdirectory path name used for both local and network |
d2956687 | 168 | * consumer ("kernel", "ust", or empty). |
00e2e675 | 169 | */ |
7966af57 SM |
170 | char domain_subdir[ |
171 | max_constexpr(sizeof(DEFAULT_KERNEL_TRACE_DIR), | |
b178f53e | 172 | sizeof(DEFAULT_UST_TRACE_DIR))]; |
173af62f DG |
173 | |
174 | /* | |
175 | * Hashtable of consumer_socket index by the file descriptor value. For | |
b178f53e JG |
176 | * multiarch consumer support, we can have more than one consumer (ex: |
177 | * 32 and 64 bit). | |
173af62f DG |
178 | */ |
179 | struct lttng_ht *socks; | |
180 | ||
7d2f7452 DG |
181 | /* Tell if this output is used for snapshot. */ |
182 | unsigned int snapshot:1; | |
183 | ||
00e2e675 | 184 | union { |
61ba6b6d | 185 | char session_root_path[LTTNG_PATH_MAX]; |
00e2e675 DG |
186 | struct consumer_net net; |
187 | } dst; | |
366a9222 JD |
188 | |
189 | /* | |
190 | * Sub-directory below the session_root_path where the next chunk of | |
191 | * trace will be stored (\0 before the first session rotation). | |
192 | */ | |
61ba6b6d | 193 | char chunk_path[LTTNG_PATH_MAX]; |
00e2e675 DG |
194 | }; |
195 | ||
173af62f | 196 | struct consumer_socket *consumer_find_socket(int key, |
348a81dc | 197 | const struct consumer_output *consumer); |
7972aab2 | 198 | struct consumer_socket *consumer_find_socket_by_bitness(int bits, |
348a81dc | 199 | const struct consumer_output *consumer); |
4ce514c4 | 200 | struct consumer_socket *consumer_allocate_socket(int *fd); |
173af62f DG |
201 | void consumer_add_socket(struct consumer_socket *sock, |
202 | struct consumer_output *consumer); | |
203 | void consumer_del_socket(struct consumer_socket *sock, | |
204 | struct consumer_output *consumer); | |
205 | void consumer_destroy_socket(struct consumer_socket *sock); | |
6dc3064a DG |
206 | int consumer_copy_sockets(struct consumer_output *dst, |
207 | struct consumer_output *src); | |
af706bb7 | 208 | void consumer_destroy_output_sockets(struct consumer_output *obj); |
04ed9e10 | 209 | int consumer_socket_send(struct consumer_socket *socket, const void *msg, |
52898cb1 DG |
210 | size_t len); |
211 | int consumer_socket_recv(struct consumer_socket *socket, void *msg, | |
212 | size_t len); | |
173af62f | 213 | |
00e2e675 DG |
214 | struct consumer_output *consumer_create_output(enum consumer_dst_type type); |
215 | struct consumer_output *consumer_copy_output(struct consumer_output *obj); | |
6addfa37 MD |
216 | void consumer_output_get(struct consumer_output *obj); |
217 | void consumer_output_put(struct consumer_output *obj); | |
b178f53e JG |
218 | int consumer_set_network_uri(const struct ltt_session *session, |
219 | struct consumer_output *obj, | |
00e2e675 | 220 | struct lttng_uri *uri); |
ac2f30af JG |
221 | int consumer_send_fds(struct consumer_socket *sock, const int *fds, |
222 | size_t nb_fd); | |
ffe60014 | 223 | int consumer_send_msg(struct consumer_socket *sock, |
04ed9e10 | 224 | const struct lttcomm_consumer_msg *msg); |
f50f23d9 DG |
225 | int consumer_send_stream(struct consumer_socket *sock, |
226 | struct consumer_output *dst, struct lttcomm_consumer_msg *msg, | |
ac2f30af | 227 | const int *fds, size_t nb_fd); |
f50f23d9 DG |
228 | int consumer_send_channel(struct consumer_socket *sock, |
229 | struct lttcomm_consumer_msg *msg); | |
230 | int consumer_send_relayd_socket(struct consumer_socket *consumer_sock, | |
6151a90f | 231 | struct lttcomm_relayd_sock *rsock, struct consumer_output *consumer, |
d3e2ba59 | 232 | enum lttng_stream_type type, uint64_t session_id, |
fb9a95c4 | 233 | const char *session_name, const char *hostname, |
6fa5fe7c | 234 | const char *base_path, int session_live_timer, |
46ef2188 MD |
235 | const uint64_t *current_chunk_id, time_t session_creation_time, |
236 | bool session_name_contains_creation_time); | |
e9404c27 JG |
237 | int consumer_send_channel_monitor_pipe(struct consumer_socket *consumer_sock, |
238 | int pipe); | |
173af62f DG |
239 | int consumer_send_destroy_relayd(struct consumer_socket *sock, |
240 | struct consumer_output *consumer); | |
f50f23d9 | 241 | int consumer_recv_status_reply(struct consumer_socket *sock); |
ffe60014 | 242 | int consumer_recv_status_channel(struct consumer_socket *sock, |
d88aee68 | 243 | uint64_t *key, unsigned int *stream_count); |
2f77fc4b | 244 | void consumer_output_send_destroy_relayd(struct consumer_output *consumer); |
a4b92340 DG |
245 | int consumer_create_socket(struct consumer_data *data, |
246 | struct consumer_output *output); | |
37278a1e | 247 | |
ffe60014 DG |
248 | void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg, |
249 | uint64_t subbuf_size, | |
250 | uint64_t num_subbuf, | |
251 | int overwrite, | |
252 | unsigned int switch_timer_interval, | |
253 | unsigned int read_timer_interval, | |
ecc48a90 | 254 | unsigned int live_timer_interval, |
a2814ea7 | 255 | bool is_in_live_session, |
e9404c27 | 256 | unsigned int monitor_timer_interval, |
ffe60014 DG |
257 | int output, |
258 | int type, | |
259 | uint64_t session_id, | |
260 | const char *pathname, | |
261 | const char *name, | |
d88aee68 DG |
262 | uint64_t relayd_id, |
263 | uint64_t key, | |
328c2fe7 | 264 | const lttng_uuid& uuid, |
1624d5b7 JD |
265 | uint32_t chan_id, |
266 | uint64_t tracefile_size, | |
2bba9e53 | 267 | uint64_t tracefile_count, |
1950109e | 268 | uint64_t session_id_per_pid, |
567eb353 | 269 | unsigned int monitor, |
d7ba1388 | 270 | uint32_t ust_app_uid, |
491d1539 | 271 | int64_t blocking_timeout, |
3d071855 | 272 | const char *root_shm_path, |
e098433c | 273 | const char *shm_path, |
1b0bebcb JG |
274 | struct lttng_trace_chunk *trace_chunk, |
275 | const struct lttng_credentials *buffer_credentials); | |
e098433c | 276 | void consumer_init_add_stream_comm_msg(struct lttcomm_consumer_msg *msg, |
d88aee68 DG |
277 | uint64_t channel_key, |
278 | uint64_t stream_key, | |
d2956687 | 279 | int32_t cpu); |
a4baae1b JD |
280 | void consumer_init_streams_sent_comm_msg(struct lttcomm_consumer_msg *msg, |
281 | enum lttng_consumer_command cmd, | |
282 | uint64_t channel_key, uint64_t net_seq_idx); | |
638e7b4e | 283 | void consumer_init_add_channel_comm_msg(struct lttcomm_consumer_msg *msg, |
d88aee68 | 284 | uint64_t channel_key, |
ffe60014 DG |
285 | uint64_t session_id, |
286 | const char *pathname, | |
d88aee68 | 287 | uint64_t relayd_id, |
c30aaa51 | 288 | const char *name, |
ffe60014 DG |
289 | unsigned int nb_init_streams, |
290 | enum lttng_event_output output, | |
1624d5b7 JD |
291 | int type, |
292 | uint64_t tracefile_size, | |
2bba9e53 | 293 | uint64_t tracefile_count, |
ecc48a90 | 294 | unsigned int monitor, |
e9404c27 | 295 | unsigned int live_timer_interval, |
a2814ea7 | 296 | bool is_in_live_session, |
d2956687 JG |
297 | unsigned int monitor_timer_interval, |
298 | struct lttng_trace_chunk *trace_chunk); | |
d88aee68 | 299 | int consumer_is_data_pending(uint64_t session_id, |
806e2684 | 300 | struct consumer_output *consumer); |
7972aab2 DG |
301 | int consumer_close_metadata(struct consumer_socket *socket, |
302 | uint64_t metadata_key); | |
303 | int consumer_setup_metadata(struct consumer_socket *socket, | |
304 | uint64_t metadata_key); | |
305 | int consumer_push_metadata(struct consumer_socket *socket, | |
306 | uint64_t metadata_key, char *metadata_str, size_t len, | |
93ec662e | 307 | size_t target_offset, uint64_t version); |
7972aab2 | 308 | int consumer_flush_channel(struct consumer_socket *socket, uint64_t key); |
0dd01979 | 309 | int consumer_clear_quiescent_channel(struct consumer_socket *socket, uint64_t key); |
fb83fe64 JD |
310 | int consumer_get_discarded_events(uint64_t session_id, uint64_t channel_key, |
311 | struct consumer_output *consumer, uint64_t *discarded); | |
312 | int consumer_get_lost_packets(uint64_t session_id, uint64_t channel_key, | |
313 | struct consumer_output *consumer, uint64_t *lost); | |
00e2e675 | 314 | |
6dc3064a | 315 | /* Snapshot command. */ |
9a654598 | 316 | enum lttng_error_code consumer_snapshot_channel(struct consumer_socket *socket, |
348a81dc | 317 | uint64_t key, const struct consumer_output *output, int metadata, |
f46376a1 | 318 | const char *channel_path, uint64_t nb_packets_per_stream); |
6dc3064a | 319 | |
92816cc3 | 320 | /* Rotation commands. */ |
5c408ad8 | 321 | int consumer_rotate_channel(struct consumer_socket *socket, uint64_t key, |
f46376a1 | 322 | struct consumer_output *output, bool is_metadata_channel); |
09ede842 | 323 | int consumer_init(struct consumer_socket *socket, |
328c2fe7 | 324 | const lttng_uuid& sessiond_uuid); |
a1ae2ea5 | 325 | |
d2956687 JG |
326 | int consumer_create_trace_chunk(struct consumer_socket *socket, |
327 | uint64_t relayd_id, uint64_t session_id, | |
5da88b0f MD |
328 | struct lttng_trace_chunk *chunk, |
329 | const char *domain_subdir); | |
d2956687 JG |
330 | int consumer_close_trace_chunk(struct consumer_socket *socket, |
331 | uint64_t relayd_id, uint64_t session_id, | |
ecd1a12f MD |
332 | struct lttng_trace_chunk *chunk, |
333 | char *closed_trace_chunk_path); | |
d2956687 JG |
334 | int consumer_trace_chunk_exists(struct consumer_socket *socket, |
335 | uint64_t relayd_id, uint64_t session_id, | |
336 | struct lttng_trace_chunk *chunk, | |
337 | enum consumer_trace_chunk_exists_status *result); | |
04ed9e10 | 338 | int consumer_open_channel_packets(struct consumer_socket *socket, uint64_t key); |
d2956687 | 339 | |
3b967712 | 340 | char *setup_channel_trace_path(struct consumer_output *consumer, |
5da88b0f | 341 | const char *session_path, size_t *consumer_path_offset); |
3b967712 | 342 | |
51a4828f MD |
343 | /* Clear command */ |
344 | int consumer_clear_channel(struct consumer_socket *socket, uint64_t key); | |
345 | ||
f1e16794 | 346 | #endif /* _CONSUMER_H */ |