Commit | Line | Data |
---|---|---|
7cdc2bab | 1 | /* |
14f28187 | 2 | * Copyright 2019 - Francis Deslauriers <francis.deslauriers@efficios.com> |
7cdc2bab MD |
3 | * Copyright 2016 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
6 | * of this software and associated documentation files (the "Software"), to deal | |
7 | * in the Software without restriction, including without limitation the rights | |
8 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
9 | * copies of the Software, and to permit persons to whom the Software is | |
10 | * furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice shall be included in | |
13 | * all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
21 | * SOFTWARE. | |
22 | */ | |
23 | ||
2ece7dd0 | 24 | #define BT_COMP_LOG_SELF_COMP (viewer_connection->self_comp) |
c01594de | 25 | #define BT_LOG_OUTPUT_LEVEL (viewer_connection->log_level) |
350ad6c1 | 26 | #define BT_LOG_TAG "PLUGIN/SRC.CTF.LTTNG-LIVE/VIEWER" |
d9c39b0a | 27 | #include "logging/comp-logging.h" |
020bc26f | 28 | |
3c22a242 FD |
29 | #include <fcntl.h> |
30 | #include <stdbool.h> | |
7cdc2bab | 31 | #include <stdint.h> |
3c22a242 | 32 | #include <stdio.h> |
7cdc2bab | 33 | #include <stdlib.h> |
3c22a242 | 34 | #include <sys/types.h> |
7cdc2bab | 35 | #include <unistd.h> |
3c22a242 | 36 | |
7cdc2bab | 37 | #include <glib.h> |
7cdc2bab | 38 | |
578e048b MJ |
39 | #include "compat/socket.h" |
40 | #include "compat/endian.h" | |
41 | #include "compat/compiler.h" | |
42 | #include "common/common.h" | |
3fadfbc0 | 43 | #include <babeltrace2/babeltrace.h> |
7cdc2bab | 44 | |
14f28187 | 45 | #include "lttng-live.h" |
7cdc2bab MD |
46 | #include "viewer-connection.h" |
47 | #include "lttng-viewer-abi.h" | |
48 | #include "data-stream.h" | |
49 | #include "metadata.h" | |
50 | ||
14f28187 FD |
51 | static |
52 | ssize_t lttng_live_recv(struct live_viewer_connection *viewer_connection, | |
4c66436f | 53 | void *buf, size_t len) |
7cdc2bab MD |
54 | { |
55 | ssize_t ret; | |
56 | size_t copied = 0, to_copy = len; | |
14f28187 FD |
57 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
58 | viewer_connection->lttng_live_msg_iter; | |
1cb3cdd7 | 59 | BT_SOCKET sock = viewer_connection->control_sock; |
7cdc2bab MD |
60 | |
61 | do { | |
1cb3cdd7 | 62 | ret = bt_socket_recv(sock, buf + copied, to_copy, 0); |
7cdc2bab | 63 | if (ret > 0) { |
f6ccaed9 | 64 | BT_ASSERT(ret <= to_copy); |
7cdc2bab MD |
65 | copied += ret; |
66 | to_copy -= ret; | |
67 | } | |
1cb3cdd7 | 68 | if (ret == BT_SOCKET_ERROR && bt_socket_interrupted()) { |
14f28187 | 69 | if (!viewer_connection->in_query && |
9b4f9b42 | 70 | lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
4c66436f MD |
71 | break; |
72 | } else { | |
73 | continue; | |
74 | } | |
75 | } | |
76 | } while (ret > 0 && to_copy > 0); | |
710d900e FD |
77 | |
78 | if (ret > 0) { | |
7cdc2bab | 79 | ret = copied; |
710d900e FD |
80 | } |
81 | ||
1cb3cdd7 | 82 | /* ret = 0 means orderly shutdown, ret == BT_SOCKET_ERROR is error. */ |
7cdc2bab MD |
83 | return ret; |
84 | } | |
85 | ||
14f28187 FD |
86 | static |
87 | ssize_t lttng_live_send(struct live_viewer_connection *viewer_connection, | |
4c66436f | 88 | const void *buf, size_t len) |
7cdc2bab | 89 | { |
14f28187 FD |
90 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
91 | viewer_connection->lttng_live_msg_iter; | |
1cb3cdd7 | 92 | BT_SOCKET sock = viewer_connection->control_sock; |
7cdc2bab MD |
93 | ssize_t ret; |
94 | ||
4c66436f | 95 | for (;;) { |
1cb3cdd7 MJ |
96 | ret = bt_socket_send_nosigpipe(sock, buf, len); |
97 | if (ret == BT_SOCKET_ERROR && bt_socket_interrupted()) { | |
14f28187 | 98 | if (!viewer_connection->in_query && |
9b4f9b42 | 99 | lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
4c66436f MD |
100 | break; |
101 | } else { | |
102 | continue; | |
103 | } | |
104 | } else { | |
105 | break; | |
106 | } | |
107 | } | |
7cdc2bab MD |
108 | return ret; |
109 | } | |
110 | ||
14f28187 FD |
111 | static |
112 | int parse_url(struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 113 | { |
94b828f3 | 114 | char error_buf[256] = { 0 }; |
1419db2b FD |
115 | bt_self_component *self_comp = viewer_connection->self_comp; |
116 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; | |
94b828f3 MD |
117 | struct bt_common_lttng_live_url_parts lttng_live_url_parts = { 0 }; |
118 | int ret = -1; | |
7cdc2bab | 119 | const char *path = viewer_connection->url->str; |
7cdc2bab MD |
120 | |
121 | if (!path) { | |
122 | goto end; | |
123 | } | |
7cdc2bab | 124 | |
0f1979c3 FD |
125 | lttng_live_url_parts = bt_common_parse_lttng_live_url(path, error_buf, |
126 | sizeof(error_buf)); | |
94b828f3 | 127 | if (!lttng_live_url_parts.proto) { |
1419db2b FD |
128 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
129 | self_comp_class,"Invalid LTTng live URL format: %s", | |
130 | error_buf); | |
7cdc2bab MD |
131 | goto end; |
132 | } | |
7cdc2bab | 133 | |
0f1979c3 | 134 | viewer_connection->relay_hostname = lttng_live_url_parts.hostname; |
94b828f3 MD |
135 | lttng_live_url_parts.hostname = NULL; |
136 | ||
137 | if (lttng_live_url_parts.port >= 0) { | |
138 | viewer_connection->port = lttng_live_url_parts.port; | |
139 | } else { | |
7cdc2bab MD |
140 | viewer_connection->port = LTTNG_DEFAULT_NETWORK_VIEWER_PORT; |
141 | } | |
142 | ||
0f1979c3 | 143 | viewer_connection->target_hostname = lttng_live_url_parts.target_hostname; |
94b828f3 MD |
144 | lttng_live_url_parts.target_hostname = NULL; |
145 | ||
146 | if (lttng_live_url_parts.session_name) { | |
0f1979c3 | 147 | viewer_connection->session_name = lttng_live_url_parts.session_name; |
94b828f3 | 148 | lttng_live_url_parts.session_name = NULL; |
7cdc2bab MD |
149 | } |
150 | ||
2ece7dd0 | 151 | BT_COMP_LOGI("Connecting to hostname : %s, port : %d, " |
0f1979c3 FD |
152 | "target hostname : %s, session name : %s, proto : %s", |
153 | viewer_connection->relay_hostname->str, | |
154 | viewer_connection->port, | |
155 | !viewer_connection->target_hostname ? | |
156 | "<none>" : viewer_connection->target_hostname->str, | |
157 | !viewer_connection->session_name ? | |
158 | "<none>" : viewer_connection->session_name->str, | |
159 | lttng_live_url_parts.proto->str); | |
7cdc2bab MD |
160 | ret = 0; |
161 | ||
162 | end: | |
94b828f3 | 163 | bt_common_destroy_lttng_live_url_parts(<tng_live_url_parts); |
7cdc2bab MD |
164 | return ret; |
165 | } | |
166 | ||
14f28187 FD |
167 | static |
168 | int lttng_live_handshake(struct live_viewer_connection *viewer_connection) | |
7cdc2bab MD |
169 | { |
170 | struct lttng_viewer_cmd cmd; | |
171 | struct lttng_viewer_connect connect; | |
1419db2b FD |
172 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
173 | bt_self_component *self_comp = viewer_connection->self_comp; | |
bdcbd52e JR |
174 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(connect); |
175 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
176 | int ret; |
177 | ssize_t ret_len; | |
178 | ||
179 | cmd.cmd = htobe32(LTTNG_VIEWER_CONNECT); | |
180 | cmd.data_size = htobe64((uint64_t) sizeof(connect)); | |
181 | cmd.cmd_version = htobe32(0); | |
182 | ||
183 | connect.viewer_session_id = -1ULL; /* will be set on recv */ | |
184 | connect.major = htobe32(LTTNG_LIVE_MAJOR); | |
185 | connect.minor = htobe32(LTTNG_LIVE_MINOR); | |
186 | connect.type = htobe32(LTTNG_VIEWER_CLIENT_COMMAND); | |
187 | ||
bdcbd52e JR |
188 | /* |
189 | * Merge the cmd and connection request to prevent a write-write | |
190 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
191 | * second write to be performed quickly in presence of Nagle's algorithm | |
192 | */ | |
193 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
194 | memcpy(cmd_buf + sizeof(cmd), &connect, sizeof(connect)); | |
bdcbd52e | 195 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 196 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
197 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
198 | self_comp_class, "Error sending version: %s", | |
199 | bt_socket_errormsg()); | |
7cdc2bab MD |
200 | goto error; |
201 | } | |
f6ccaed9 PP |
202 | |
203 | BT_ASSERT(ret_len == cmd_buf_len); | |
7cdc2bab | 204 | |
4c66436f | 205 | ret_len = lttng_live_recv(viewer_connection, &connect, sizeof(connect)); |
7cdc2bab | 206 | if (ret_len == 0) { |
1419db2b FD |
207 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
208 | self_comp_class, "Remote side has closed connection"); | |
7cdc2bab MD |
209 | goto error; |
210 | } | |
1cb3cdd7 | 211 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
212 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
213 | self_comp_class, "Error receiving version: %s", | |
214 | bt_socket_errormsg()); | |
7cdc2bab MD |
215 | goto error; |
216 | } | |
f6ccaed9 | 217 | BT_ASSERT(ret_len == sizeof(connect)); |
7cdc2bab | 218 | |
2ece7dd0 | 219 | BT_COMP_LOGI("Received viewer session ID : %" PRIu64, |
83c78c35 | 220 | (uint64_t) be64toh(connect.viewer_session_id)); |
2ece7dd0 | 221 | BT_COMP_LOGI("Relayd version : %u.%u", be32toh(connect.major), |
7cdc2bab MD |
222 | be32toh(connect.minor)); |
223 | ||
224 | if (LTTNG_LIVE_MAJOR != be32toh(connect.major)) { | |
1419db2b FD |
225 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
226 | self_comp_class, "Incompatible lttng-relayd protocol"); | |
7cdc2bab MD |
227 | goto error; |
228 | } | |
229 | /* Use the smallest protocol version implemented. */ | |
230 | if (LTTNG_LIVE_MINOR > be32toh(connect.minor)) { | |
231 | viewer_connection->minor = be32toh(connect.minor); | |
232 | } else { | |
233 | viewer_connection->minor = LTTNG_LIVE_MINOR; | |
234 | } | |
235 | viewer_connection->major = LTTNG_LIVE_MAJOR; | |
236 | ret = 0; | |
237 | return ret; | |
238 | ||
239 | error: | |
7cdc2bab MD |
240 | return -1; |
241 | } | |
242 | ||
14f28187 FD |
243 | static |
244 | int lttng_live_connect_viewer(struct live_viewer_connection *viewer_connection) | |
7cdc2bab MD |
245 | { |
246 | struct hostent *host; | |
247 | struct sockaddr_in server_addr; | |
1419db2b FD |
248 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
249 | bt_self_component *self_comp = viewer_connection->self_comp; | |
7cdc2bab MD |
250 | int ret; |
251 | ||
252 | if (parse_url(viewer_connection)) { | |
1419db2b FD |
253 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
254 | self_comp_class, "Failed to parse URL"); | |
7cdc2bab MD |
255 | goto error; |
256 | } | |
257 | ||
94b828f3 | 258 | host = gethostbyname(viewer_connection->relay_hostname->str); |
7cdc2bab | 259 | if (!host) { |
1419db2b FD |
260 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
261 | self_comp_class, "Cannot lookup hostname: hostname=\"%s\"", | |
94b828f3 | 262 | viewer_connection->relay_hostname->str); |
7cdc2bab MD |
263 | goto error; |
264 | } | |
265 | ||
1cb3cdd7 | 266 | if ((viewer_connection->control_sock = socket(AF_INET, SOCK_STREAM, 0)) == BT_INVALID_SOCKET) { |
1419db2b FD |
267 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
268 | self_comp_class, "Socket creation failed: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
269 | goto error; |
270 | } | |
271 | ||
272 | server_addr.sin_family = AF_INET; | |
273 | server_addr.sin_port = htons(viewer_connection->port); | |
274 | server_addr.sin_addr = *((struct in_addr *) host->h_addr); | |
275 | memset(&(server_addr.sin_zero), 0, 8); | |
276 | ||
277 | if (connect(viewer_connection->control_sock, (struct sockaddr *) &server_addr, | |
1cb3cdd7 | 278 | sizeof(struct sockaddr)) == BT_SOCKET_ERROR) { |
1419db2b FD |
279 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
280 | self_comp_class, "Connection failed: %s", | |
281 | bt_socket_errormsg()); | |
7cdc2bab MD |
282 | goto error; |
283 | } | |
284 | if (lttng_live_handshake(viewer_connection)) { | |
1419db2b FD |
285 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
286 | self_comp_class, "Viewer handshake failed"); | |
7cdc2bab MD |
287 | goto error; |
288 | } | |
289 | ||
290 | ret = 0; | |
291 | ||
292 | return ret; | |
293 | ||
294 | error: | |
1cb3cdd7 MJ |
295 | if (viewer_connection->control_sock != BT_INVALID_SOCKET) { |
296 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { | |
1419db2b FD |
297 | BT_COMP_OR_COMP_CLASS_LOGE(self_comp, self_comp_class, |
298 | "Error closing socket: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
299 | } |
300 | } | |
1cb3cdd7 | 301 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab MD |
302 | return -1; |
303 | } | |
304 | ||
14f28187 FD |
305 | static |
306 | void lttng_live_disconnect_viewer( | |
307 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 308 | { |
1cb3cdd7 | 309 | if (viewer_connection->control_sock == BT_INVALID_SOCKET) { |
7cdc2bab MD |
310 | return; |
311 | } | |
1cb3cdd7 | 312 | if (bt_socket_close(viewer_connection->control_sock) == BT_SOCKET_ERROR) { |
1419db2b FD |
313 | BT_COMP_LOGE("Error closing socket: %s", |
314 | bt_socket_errormsg()); | |
1cb3cdd7 | 315 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab MD |
316 | } |
317 | } | |
318 | ||
7cdc2bab | 319 | static |
14f28187 | 320 | int list_update_session(bt_value *results, |
7cdc2bab | 321 | const struct lttng_viewer_session *session, |
c01594de | 322 | bool *_found, struct live_viewer_connection *viewer_connection) |
7cdc2bab | 323 | { |
1419db2b FD |
324 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
325 | bt_self_component *self_comp = viewer_connection->self_comp; | |
f80e9ec1 FD |
326 | int ret = 0; |
327 | uint64_t i, len; | |
b19ff26f PP |
328 | bt_value *map = NULL; |
329 | bt_value *hostname = NULL; | |
330 | bt_value *session_name = NULL; | |
331 | bt_value *btval = NULL; | |
7cdc2bab MD |
332 | bool found = false; |
333 | ||
393729a6 | 334 | len = bt_value_array_get_length(results); |
7cdc2bab MD |
335 | for (i = 0; i < len; i++) { |
336 | const char *hostname_str = NULL; | |
337 | const char *session_name_str = NULL; | |
338 | ||
f80e9ec1 | 339 | map = bt_value_array_borrow_element_by_index(results, i); |
14f28187 | 340 | hostname = bt_value_map_borrow_entry_value(map, "target-hostname"); |
7cdc2bab | 341 | if (!hostname) { |
1419db2b FD |
342 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
343 | self_comp_class, | |
344 | "Error borrowing \"target-hostname\" entry."); | |
14f28187 | 345 | ret = -1; |
7cdc2bab MD |
346 | goto end; |
347 | } | |
14f28187 | 348 | session_name = bt_value_map_borrow_entry_value(map, "session-name"); |
7cdc2bab | 349 | if (!session_name) { |
1419db2b FD |
350 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
351 | self_comp_class, | |
352 | "Error borrowing \"session-name\" entry."); | |
14f28187 | 353 | ret = -1; |
7cdc2bab MD |
354 | goto end; |
355 | } | |
601b0d3c PP |
356 | hostname_str = bt_value_string_get(hostname); |
357 | session_name_str = bt_value_string_get(session_name); | |
7cdc2bab | 358 | |
2242b43d PP |
359 | if (strcmp(session->hostname, hostname_str) == 0 |
360 | && strcmp(session->session_name, session_name_str) == 0) { | |
7cdc2bab MD |
361 | int64_t val; |
362 | uint32_t streams = be32toh(session->streams); | |
363 | uint32_t clients = be32toh(session->clients); | |
364 | ||
365 | found = true; | |
366 | ||
14f28187 | 367 | btval = bt_value_map_borrow_entry_value(map, "stream-count"); |
7cdc2bab | 368 | if (!btval) { |
1419db2b FD |
369 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( |
370 | self_comp, self_comp_class, | |
371 | "Error borrowing \"stream-count\" entry."); | |
14f28187 | 372 | ret = -1; |
7cdc2bab MD |
373 | goto end; |
374 | } | |
a91cb83e | 375 | val = bt_value_integer_unsigned_get(btval); |
7cdc2bab MD |
376 | /* sum */ |
377 | val += streams; | |
a91cb83e | 378 | bt_value_integer_unsigned_set(btval, val); |
7cdc2bab | 379 | |
14f28187 | 380 | btval = bt_value_map_borrow_entry_value(map, "client-count"); |
7cdc2bab | 381 | if (!btval) { |
1419db2b FD |
382 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( |
383 | self_comp, self_comp_class, | |
384 | "Error borrowing \"client-count\" entry."); | |
14f28187 | 385 | ret = -1; |
7cdc2bab MD |
386 | goto end; |
387 | } | |
a91cb83e | 388 | val = bt_value_integer_unsigned_get(btval); |
7cdc2bab | 389 | /* max */ |
91d81473 | 390 | val = bt_max_t(int64_t, clients, val); |
a91cb83e | 391 | bt_value_integer_unsigned_set(btval, val); |
7cdc2bab MD |
392 | } |
393 | ||
7cdc2bab MD |
394 | if (found) { |
395 | break; | |
396 | } | |
397 | } | |
398 | end: | |
7cdc2bab MD |
399 | *_found = found; |
400 | return ret; | |
401 | } | |
402 | ||
403 | static | |
14f28187 | 404 | int list_append_session(bt_value *results, |
7cdc2bab | 405 | GString *base_url, |
c01594de PP |
406 | const struct lttng_viewer_session *session, |
407 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 408 | { |
14f28187 | 409 | int ret = 0; |
1419db2b | 410 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
d24d5663 PP |
411 | bt_value_map_insert_entry_status insert_status; |
412 | bt_value_array_append_element_status append_status; | |
b19ff26f | 413 | bt_value *map = NULL; |
7cdc2bab MD |
414 | GString *url = NULL; |
415 | bool found = false; | |
416 | ||
417 | /* | |
418 | * If the session already exists, add the stream count to it, | |
419 | * and do max of client counts. | |
420 | */ | |
c01594de | 421 | ret = list_update_session(results, session, &found, viewer_connection); |
14f28187 | 422 | if (ret || found) { |
7cdc2bab MD |
423 | goto end; |
424 | } | |
425 | ||
14f28187 | 426 | map = bt_value_map_create(); |
7cdc2bab | 427 | if (!map) { |
1419db2b FD |
428 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
429 | "Error creating map value."); | |
14f28187 | 430 | ret = -1; |
7cdc2bab MD |
431 | goto end; |
432 | } | |
433 | ||
434 | if (base_url->len < 1) { | |
1419db2b FD |
435 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
436 | "Error: base_url length smaller than 1."); | |
14f28187 | 437 | ret = -1; |
7cdc2bab MD |
438 | goto end; |
439 | } | |
440 | /* | |
441 | * key = "url", | |
442 | * value = <string>, | |
443 | */ | |
444 | url = g_string_new(base_url->str); | |
445 | g_string_append(url, "/host/"); | |
446 | g_string_append(url, session->hostname); | |
447 | g_string_append_c(url, '/'); | |
448 | g_string_append(url, session->session_name); | |
449 | ||
d24d5663 PP |
450 | insert_status = bt_value_map_insert_string_entry(map, "url", url->str); |
451 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
1419db2b FD |
452 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
453 | "Error inserting \"url\" entry."); | |
14f28187 | 454 | ret = -1; |
7cdc2bab MD |
455 | goto end; |
456 | } | |
457 | ||
458 | /* | |
459 | * key = "target-hostname", | |
460 | * value = <string>, | |
461 | */ | |
d24d5663 | 462 | insert_status = bt_value_map_insert_string_entry(map, "target-hostname", |
7cdc2bab | 463 | session->hostname); |
d24d5663 | 464 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
1419db2b FD |
465 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
466 | "Error inserting \"target-hostname\" entry."); | |
14f28187 | 467 | ret = -1; |
7cdc2bab MD |
468 | goto end; |
469 | } | |
470 | ||
471 | /* | |
472 | * key = "session-name", | |
473 | * value = <string>, | |
474 | */ | |
d24d5663 | 475 | insert_status = bt_value_map_insert_string_entry(map, "session-name", |
7cdc2bab | 476 | session->session_name); |
d24d5663 | 477 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
1419db2b FD |
478 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
479 | "Error inserting \"session-name\" entry."); | |
14f28187 | 480 | ret = -1; |
7cdc2bab MD |
481 | goto end; |
482 | } | |
483 | ||
484 | /* | |
485 | * key = "timer-us", | |
486 | * value = <integer>, | |
487 | */ | |
488 | { | |
489 | uint32_t live_timer = be32toh(session->live_timer); | |
490 | ||
a91cb83e | 491 | insert_status = bt_value_map_insert_unsigned_integer_entry( |
fdd3a2da | 492 | map, "timer-us", live_timer); |
d24d5663 | 493 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
1419db2b FD |
494 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
495 | "Error inserting \"timer-us\" entry."); | |
14f28187 | 496 | ret = -1; |
7cdc2bab MD |
497 | goto end; |
498 | } | |
499 | } | |
500 | ||
501 | /* | |
502 | * key = "stream-count", | |
503 | * value = <integer>, | |
504 | */ | |
505 | { | |
506 | uint32_t streams = be32toh(session->streams); | |
507 | ||
a91cb83e | 508 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, |
fdd3a2da | 509 | "stream-count", streams); |
d24d5663 | 510 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
1419db2b FD |
511 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
512 | "Error inserting \"stream-count\" entry."); | |
14f28187 | 513 | ret = -1; |
7cdc2bab MD |
514 | goto end; |
515 | } | |
516 | } | |
517 | ||
7cdc2bab MD |
518 | /* |
519 | * key = "client-count", | |
520 | * value = <integer>, | |
521 | */ | |
522 | { | |
523 | uint32_t clients = be32toh(session->clients); | |
524 | ||
a91cb83e | 525 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, |
fdd3a2da | 526 | "client-count", clients); |
d24d5663 | 527 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
1419db2b FD |
528 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
529 | "Error inserting \"client-count\" entry."); | |
14f28187 | 530 | ret = -1; |
7cdc2bab MD |
531 | goto end; |
532 | } | |
533 | } | |
534 | ||
d24d5663 PP |
535 | append_status = bt_value_array_append_element(results, map); |
536 | if (append_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) { | |
1419db2b FD |
537 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
538 | "Error appending map to results."); | |
14f28187 FD |
539 | ret = -1; |
540 | } | |
541 | ||
7cdc2bab MD |
542 | end: |
543 | if (url) { | |
14f28187 | 544 | g_string_free(url, true); |
7cdc2bab | 545 | } |
c5b9b441 | 546 | BT_VALUE_PUT_REF_AND_RESET(map); |
7cdc2bab MD |
547 | return ret; |
548 | } | |
549 | ||
550 | /* | |
551 | * Data structure returned: | |
552 | * | |
553 | * { | |
554 | * <array> = { | |
555 | * [n] = { | |
556 | * <map> = { | |
557 | * { | |
558 | * key = "url", | |
559 | * value = <string>, | |
560 | * }, | |
561 | * { | |
562 | * key = "target-hostname", | |
563 | * value = <string>, | |
564 | * }, | |
565 | * { | |
566 | * key = "session-name", | |
567 | * value = <string>, | |
568 | * }, | |
569 | * { | |
570 | * key = "timer-us", | |
571 | * value = <integer>, | |
572 | * }, | |
573 | * { | |
574 | * key = "stream-count", | |
575 | * value = <integer>, | |
576 | * }, | |
577 | * { | |
578 | * key = "client-count", | |
579 | * value = <integer>, | |
580 | * }, | |
581 | * }, | |
582 | * } | |
583 | * } | |
584 | */ | |
585 | ||
586 | BT_HIDDEN | |
d24d5663 | 587 | bt_component_class_query_method_status live_viewer_connection_list_sessions( |
14f28187 FD |
588 | struct live_viewer_connection *viewer_connection, |
589 | const bt_value **user_result) | |
7cdc2bab | 590 | { |
1419db2b | 591 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
d24d5663 PP |
592 | bt_component_class_query_method_status status = |
593 | BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_OK; | |
14f28187 | 594 | bt_value *result = NULL; |
7cdc2bab MD |
595 | struct lttng_viewer_cmd cmd; |
596 | struct lttng_viewer_list_sessions list; | |
597 | uint32_t i, sessions_count; | |
598 | ssize_t ret_len; | |
599 | ||
14f28187 FD |
600 | result = bt_value_array_create(); |
601 | if (!result) { | |
1419db2b FD |
602 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
603 | "Error creating array"); | |
d24d5663 | 604 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR; |
7cdc2bab MD |
605 | goto error; |
606 | } | |
607 | ||
608 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
609 | cmd.data_size = htobe64((uint64_t) 0); | |
610 | cmd.cmd_version = htobe32(0); | |
611 | ||
4c66436f | 612 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 | 613 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
614 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
615 | "Error sending cmd: %s", bt_socket_errormsg()); | |
d24d5663 | 616 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
617 | goto error; |
618 | } | |
f6ccaed9 | 619 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 620 | |
4c66436f | 621 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 622 | if (ret_len == 0) { |
1419db2b FD |
623 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
624 | "Remote side has closed connection"); | |
d24d5663 | 625 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
626 | goto error; |
627 | } | |
1cb3cdd7 | 628 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
629 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
630 | "Error receiving session list: %s", | |
631 | bt_socket_errormsg()); | |
d24d5663 | 632 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
633 | goto error; |
634 | } | |
f6ccaed9 | 635 | BT_ASSERT(ret_len == sizeof(list)); |
7cdc2bab MD |
636 | |
637 | sessions_count = be32toh(list.sessions_count); | |
638 | for (i = 0; i < sessions_count; i++) { | |
639 | struct lttng_viewer_session lsession; | |
640 | ||
14f28187 FD |
641 | ret_len = lttng_live_recv(viewer_connection, &lsession, |
642 | sizeof(lsession)); | |
7cdc2bab | 643 | if (ret_len == 0) { |
1419db2b FD |
644 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
645 | "Remote side has closed connection"); | |
d24d5663 | 646 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
647 | goto error; |
648 | } | |
1cb3cdd7 | 649 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
650 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
651 | "Error receiving session: %s", | |
652 | bt_socket_errormsg()); | |
d24d5663 | 653 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
654 | goto error; |
655 | } | |
f6ccaed9 | 656 | BT_ASSERT(ret_len == sizeof(lsession)); |
7cdc2bab MD |
657 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
658 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
14f28187 | 659 | if (list_append_session(result, viewer_connection->url, |
c01594de | 660 | &lsession, viewer_connection)) { |
1419db2b FD |
661 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
662 | "Error appending session"); | |
d24d5663 | 663 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
664 | goto error; |
665 | } | |
666 | } | |
14f28187 FD |
667 | |
668 | *user_result = result; | |
7cdc2bab MD |
669 | goto end; |
670 | error: | |
14f28187 | 671 | BT_VALUE_PUT_REF_AND_RESET(result); |
7cdc2bab | 672 | end: |
14f28187 | 673 | return status; |
7cdc2bab MD |
674 | } |
675 | ||
676 | static | |
14f28187 | 677 | int lttng_live_query_session_ids(struct lttng_live_msg_iter *lttng_live_msg_iter) |
7cdc2bab MD |
678 | { |
679 | struct lttng_viewer_cmd cmd; | |
680 | struct lttng_viewer_list_sessions list; | |
681 | struct lttng_viewer_session lsession; | |
682 | uint32_t i, sessions_count; | |
683 | ssize_t ret_len; | |
684 | uint64_t session_id; | |
14f28187 | 685 | struct live_viewer_connection *viewer_connection = |
1419db2b FD |
686 | lttng_live_msg_iter->viewer_connection; |
687 | bt_self_component *self_comp = viewer_connection->self_comp; | |
7cdc2bab MD |
688 | |
689 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
690 | cmd.data_size = htobe64((uint64_t) 0); | |
691 | cmd.cmd_version = htobe32(0); | |
692 | ||
4c66436f | 693 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 | 694 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
695 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Error sending cmd: %s", |
696 | bt_socket_errormsg()); | |
7cdc2bab MD |
697 | goto error; |
698 | } | |
f6ccaed9 | 699 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 700 | |
4c66436f | 701 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 702 | if (ret_len == 0) { |
1419db2b FD |
703 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
704 | "Remote side has closed connection"); | |
7cdc2bab MD |
705 | goto error; |
706 | } | |
1cb3cdd7 | 707 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
708 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
709 | "Error receiving session list: %s", | |
710 | bt_socket_errormsg()); | |
7cdc2bab MD |
711 | goto error; |
712 | } | |
f6ccaed9 | 713 | BT_ASSERT(ret_len == sizeof(list)); |
7cdc2bab MD |
714 | |
715 | sessions_count = be32toh(list.sessions_count); | |
716 | for (i = 0; i < sessions_count; i++) { | |
4c66436f | 717 | ret_len = lttng_live_recv(viewer_connection, |
7cdc2bab MD |
718 | &lsession, sizeof(lsession)); |
719 | if (ret_len == 0) { | |
1419db2b FD |
720 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
721 | "Remote side has closed connection"); | |
7cdc2bab MD |
722 | goto error; |
723 | } | |
1cb3cdd7 | 724 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
725 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
726 | "Error receiving session: %s", | |
727 | bt_socket_errormsg()); | |
7cdc2bab MD |
728 | goto error; |
729 | } | |
f6ccaed9 | 730 | BT_ASSERT(ret_len == sizeof(lsession)); |
7cdc2bab MD |
731 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
732 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
733 | session_id = be64toh(lsession.id); | |
734 | ||
2ece7dd0 | 735 | BT_COMP_LOGI("Adding session %" PRIu64 " hostname: %s session_name: %s", |
06994c71 MD |
736 | session_id, lsession.hostname, lsession.session_name); |
737 | ||
7cdc2bab | 738 | if ((strncmp(lsession.session_name, |
94b828f3 | 739 | viewer_connection->session_name->str, |
1cb3cdd7 | 740 | LTTNG_VIEWER_NAME_MAX) == 0) && (strncmp(lsession.hostname, |
94b828f3 | 741 | viewer_connection->target_hostname->str, |
1cb3cdd7 | 742 | LTTNG_VIEWER_HOST_NAME_MAX) == 0)) { |
14f28187 | 743 | if (lttng_live_add_session(lttng_live_msg_iter, session_id, |
06994c71 MD |
744 | lsession.hostname, |
745 | lsession.session_name)) { | |
1419db2b FD |
746 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
747 | "Failed to add live session"); | |
7cdc2bab MD |
748 | goto error; |
749 | } | |
750 | } | |
751 | } | |
752 | ||
753 | return 0; | |
754 | ||
755 | error: | |
7cdc2bab MD |
756 | return -1; |
757 | } | |
758 | ||
759 | BT_HIDDEN | |
14f28187 FD |
760 | int lttng_live_create_viewer_session( |
761 | struct lttng_live_msg_iter *lttng_live_msg_iter) | |
7cdc2bab MD |
762 | { |
763 | struct lttng_viewer_cmd cmd; | |
764 | struct lttng_viewer_create_session_response resp; | |
765 | ssize_t ret_len; | |
14f28187 | 766 | struct live_viewer_connection *viewer_connection = |
1419db2b FD |
767 | lttng_live_msg_iter->viewer_connection; |
768 | bt_self_component *self_comp = viewer_connection->self_comp; | |
7cdc2bab MD |
769 | |
770 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); | |
771 | cmd.data_size = htobe64((uint64_t) 0); | |
772 | cmd.cmd_version = htobe32(0); | |
773 | ||
4c66436f | 774 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 | 775 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
776 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Error sending cmd: %s", |
777 | bt_socket_errormsg()); | |
7cdc2bab MD |
778 | goto error; |
779 | } | |
f6ccaed9 | 780 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 781 | |
4c66436f | 782 | ret_len = lttng_live_recv(viewer_connection, &resp, sizeof(resp)); |
7cdc2bab | 783 | if (ret_len == 0) { |
1419db2b FD |
784 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
785 | "Remote side has closed connection"); | |
7cdc2bab MD |
786 | goto error; |
787 | } | |
1cb3cdd7 | 788 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
789 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
790 | "Error receiving create session reply: %s", | |
791 | bt_socket_errormsg()); | |
7cdc2bab MD |
792 | goto error; |
793 | } | |
f6ccaed9 | 794 | BT_ASSERT(ret_len == sizeof(resp)); |
7cdc2bab MD |
795 | |
796 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
1419db2b FD |
797 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
798 | "Error creating viewer session"); | |
7cdc2bab MD |
799 | goto error; |
800 | } | |
14f28187 | 801 | if (lttng_live_query_session_ids(lttng_live_msg_iter)) { |
1419db2b FD |
802 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
803 | "Failed to query live viewer session ids"); | |
7cdc2bab MD |
804 | goto error; |
805 | } | |
806 | ||
807 | return 0; | |
808 | ||
809 | error: | |
810 | return -1; | |
811 | } | |
812 | ||
813 | static | |
814 | int receive_streams(struct lttng_live_session *session, | |
851de941 SM |
815 | uint32_t stream_count, |
816 | bt_self_message_iterator *self_msg_iter) | |
7cdc2bab MD |
817 | { |
818 | ssize_t ret_len; | |
819 | uint32_t i; | |
14f28187 | 820 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
0f1979c3 | 821 | session->lttng_live_msg_iter; |
14f28187 | 822 | struct live_viewer_connection *viewer_connection = |
0f1979c3 | 823 | lttng_live_msg_iter->viewer_connection; |
1419db2b | 824 | bt_self_component *self_comp = viewer_connection->self_comp; |
7cdc2bab | 825 | |
2ece7dd0 | 826 | BT_COMP_LOGI("Getting %" PRIu32 " new streams:", stream_count); |
7cdc2bab MD |
827 | for (i = 0; i < stream_count; i++) { |
828 | struct lttng_viewer_stream stream; | |
829 | struct lttng_live_stream_iterator *live_stream; | |
830 | uint64_t stream_id; | |
831 | uint64_t ctf_trace_id; | |
832 | ||
4c66436f | 833 | ret_len = lttng_live_recv(viewer_connection, &stream, sizeof(stream)); |
7cdc2bab | 834 | if (ret_len == 0) { |
1419db2b FD |
835 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
836 | "Remote side has closed connection"); | |
7cdc2bab MD |
837 | goto error; |
838 | } | |
1cb3cdd7 | 839 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
840 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
841 | "Error receiving stream"); | |
7cdc2bab MD |
842 | goto error; |
843 | } | |
f6ccaed9 | 844 | BT_ASSERT(ret_len == sizeof(stream)); |
7cdc2bab MD |
845 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; |
846 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
847 | stream_id = be64toh(stream.id); | |
848 | ctf_trace_id = be64toh(stream.ctf_trace_id); | |
849 | ||
850 | if (stream.metadata_flag) { | |
2ece7dd0 | 851 | BT_COMP_LOGI(" metadata stream %" PRIu64 " : %s/%s", |
0f1979c3 | 852 | stream_id, stream.path_name, stream.channel_name); |
7cdc2bab | 853 | if (lttng_live_metadata_create_stream(session, |
06994c71 MD |
854 | ctf_trace_id, stream_id, |
855 | stream.path_name)) { | |
1419db2b FD |
856 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
857 | "Error creating metadata stream"); | |
7cdc2bab MD |
858 | |
859 | goto error; | |
860 | } | |
d6e69534 | 861 | session->lazy_stream_msg_init = true; |
7cdc2bab | 862 | } else { |
2ece7dd0 | 863 | BT_COMP_LOGI(" stream %" PRIu64 " : %s/%s", |
0f1979c3 | 864 | stream_id, stream.path_name, stream.channel_name); |
7cdc2bab | 865 | live_stream = lttng_live_stream_iterator_create(session, |
851de941 | 866 | ctf_trace_id, stream_id, self_msg_iter); |
7cdc2bab | 867 | if (!live_stream) { |
1419db2b FD |
868 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
869 | "Error creating stream"); | |
7cdc2bab MD |
870 | goto error; |
871 | } | |
872 | } | |
873 | } | |
874 | return 0; | |
875 | ||
876 | error: | |
877 | return -1; | |
878 | } | |
879 | ||
880 | BT_HIDDEN | |
eee8e741 | 881 | enum lttng_live_attach_session_status lttng_live_attach_session( |
851de941 SM |
882 | struct lttng_live_session *session, |
883 | bt_self_message_iterator *self_msg_iter) | |
7cdc2bab MD |
884 | { |
885 | struct lttng_viewer_cmd cmd; | |
eee8e741 | 886 | enum lttng_live_attach_session_status attach_status; |
7cdc2bab MD |
887 | struct lttng_viewer_attach_session_request rq; |
888 | struct lttng_viewer_attach_session_response rp; | |
0f1979c3 FD |
889 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
890 | session->lttng_live_msg_iter; | |
14f28187 | 891 | struct live_viewer_connection *viewer_connection = |
0f1979c3 | 892 | lttng_live_msg_iter->viewer_connection; |
1419db2b | 893 | bt_self_component *self_comp = viewer_connection->self_comp; |
7cdc2bab MD |
894 | uint64_t session_id = session->id; |
895 | uint32_t streams_count; | |
bdcbd52e JR |
896 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
897 | char cmd_buf[cmd_buf_len]; | |
0f1979c3 | 898 | ssize_t ret_len; |
7cdc2bab | 899 | |
7cdc2bab MD |
900 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); |
901 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
902 | cmd.cmd_version = htobe32(0); | |
903 | ||
904 | memset(&rq, 0, sizeof(rq)); | |
905 | rq.session_id = htobe64(session_id); | |
906 | // TODO: add cmd line parameter to select seek beginning | |
907 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); | |
908 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); | |
909 | ||
bdcbd52e JR |
910 | /* |
911 | * Merge the cmd and connection request to prevent a write-write | |
912 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
913 | * second write to be performed quickly in presence of Nagle's algorithm. | |
914 | */ | |
915 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
916 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 917 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 918 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
919 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
920 | "Error sending attach request: %s", | |
921 | bt_socket_errormsg()); | |
7cdc2bab MD |
922 | goto error; |
923 | } | |
7cdc2bab | 924 | |
f6ccaed9 | 925 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 926 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 927 | if (ret_len == 0) { |
1419db2b FD |
928 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
929 | "Remote side has closed connection"); | |
7cdc2bab MD |
930 | goto error; |
931 | } | |
1cb3cdd7 | 932 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
933 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
934 | "Error receiving attach response: %s", | |
935 | bt_socket_errormsg()); | |
7cdc2bab MD |
936 | goto error; |
937 | } | |
f6ccaed9 | 938 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
939 | |
940 | streams_count = be32toh(rp.streams_count); | |
941 | switch(be32toh(rp.status)) { | |
942 | case LTTNG_VIEWER_ATTACH_OK: | |
943 | break; | |
944 | case LTTNG_VIEWER_ATTACH_UNK: | |
1419db2b FD |
945 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
946 | "Session id %" PRIu64 " is unknown", session_id); | |
7cdc2bab MD |
947 | goto error; |
948 | case LTTNG_VIEWER_ATTACH_ALREADY: | |
1419db2b FD |
949 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
950 | "There is already a viewer attached to this session"); | |
7cdc2bab MD |
951 | goto error; |
952 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: | |
1419db2b | 953 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Not a live session"); |
7cdc2bab MD |
954 | goto error; |
955 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: | |
1419db2b | 956 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Wrong seek parameter"); |
7cdc2bab MD |
957 | goto error; |
958 | default: | |
1419db2b FD |
959 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
960 | "Unknown attach return code %u", be32toh(rp.status)); | |
7cdc2bab MD |
961 | goto error; |
962 | } | |
963 | ||
964 | /* We receive the initial list of streams. */ | |
851de941 | 965 | if (receive_streams(session, streams_count, self_msg_iter)) { |
1419db2b | 966 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Error receiving streams"); |
7cdc2bab MD |
967 | goto error; |
968 | } | |
969 | ||
970 | session->attached = true; | |
971 | session->new_streams_needed = false; | |
972 | ||
eee8e741 FD |
973 | attach_status = LTTNG_LIVE_ATTACH_SESSION_STATUS_OK; |
974 | goto end; | |
7cdc2bab MD |
975 | |
976 | error: | |
eee8e741 FD |
977 | attach_status = LTTNG_LIVE_ATTACH_SESSION_STATUS_ERROR; |
978 | ||
979 | end: | |
980 | return attach_status; | |
7cdc2bab MD |
981 | } |
982 | ||
983 | BT_HIDDEN | |
984 | int lttng_live_detach_session(struct lttng_live_session *session) | |
985 | { | |
986 | struct lttng_viewer_cmd cmd; | |
987 | struct lttng_viewer_detach_session_request rq; | |
988 | struct lttng_viewer_detach_session_response rp; | |
989 | ssize_t ret_len; | |
0f1979c3 FD |
990 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
991 | session->lttng_live_msg_iter; | |
14f28187 | 992 | struct live_viewer_connection *viewer_connection = |
0f1979c3 | 993 | lttng_live_msg_iter->viewer_connection; |
7cdc2bab | 994 | uint64_t session_id = session->id; |
bdcbd52e JR |
995 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
996 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
997 | |
998 | if (!session->attached) { | |
999 | return 0; | |
1000 | } | |
1001 | ||
1002 | cmd.cmd = htobe32(LTTNG_VIEWER_DETACH_SESSION); | |
1003 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1004 | cmd.cmd_version = htobe32(0); | |
1005 | ||
1006 | memset(&rq, 0, sizeof(rq)); | |
1007 | rq.session_id = htobe64(session_id); | |
1008 | ||
bdcbd52e JR |
1009 | /* |
1010 | * Merge the cmd and connection request to prevent a write-write | |
1011 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1012 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1013 | */ | |
1014 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1015 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1016 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1017 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1018 | BT_COMP_LOGE("Error sending detach request: %s", |
1019 | bt_socket_errormsg()); | |
7cdc2bab MD |
1020 | goto error; |
1021 | } | |
7cdc2bab | 1022 | |
f6ccaed9 | 1023 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1024 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1025 | if (ret_len == 0) { |
1419db2b | 1026 | BT_COMP_LOGE("Remote side has closed connection"); |
7cdc2bab MD |
1027 | goto error; |
1028 | } | |
1cb3cdd7 | 1029 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1030 | BT_COMP_LOGE("Error receiving detach response: %s", |
1031 | bt_socket_errormsg()); | |
7cdc2bab MD |
1032 | goto error; |
1033 | } | |
f6ccaed9 | 1034 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1035 | |
1036 | switch(be32toh(rp.status)) { | |
1037 | case LTTNG_VIEWER_DETACH_SESSION_OK: | |
1038 | break; | |
1039 | case LTTNG_VIEWER_DETACH_SESSION_UNK: | |
2ece7dd0 | 1040 | BT_COMP_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
1041 | goto error; |
1042 | case LTTNG_VIEWER_DETACH_SESSION_ERR: | |
2ece7dd0 | 1043 | BT_COMP_LOGW("Error detaching session id %" PRIu64 "", session_id); |
7cdc2bab MD |
1044 | goto error; |
1045 | default: | |
2ece7dd0 | 1046 | BT_COMP_LOGE("Unknown detach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
1047 | goto error; |
1048 | } | |
1049 | ||
1050 | session->attached = false; | |
1051 | ||
1052 | return 0; | |
1053 | ||
1054 | error: | |
1055 | return -1; | |
1056 | } | |
1057 | ||
1058 | BT_HIDDEN | |
c28512ab FD |
1059 | enum lttng_live_get_one_metadata_status lttng_live_get_one_metadata_packet( |
1060 | struct lttng_live_trace *trace, FILE *fp, size_t *reply_len) | |
7cdc2bab MD |
1061 | { |
1062 | uint64_t len = 0; | |
c28512ab | 1063 | enum lttng_live_get_one_metadata_status metadata_status; |
7cdc2bab MD |
1064 | struct lttng_viewer_cmd cmd; |
1065 | struct lttng_viewer_get_metadata rq; | |
1066 | struct lttng_viewer_metadata_packet rp; | |
1067 | char *data = NULL; | |
1068 | ssize_t ret_len; | |
1069 | struct lttng_live_session *session = trace->session; | |
0f1979c3 FD |
1070 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1071 | session->lttng_live_msg_iter; | |
7cdc2bab | 1072 | struct lttng_live_metadata *metadata = trace->metadata; |
14f28187 | 1073 | struct live_viewer_connection *viewer_connection = |
0f1979c3 | 1074 | lttng_live_msg_iter->viewer_connection; |
1419db2b | 1075 | bt_self_component *self_comp = viewer_connection->self_comp; |
bdcbd52e JR |
1076 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1077 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
1078 | |
1079 | rq.stream_id = htobe64(metadata->stream_id); | |
1080 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); | |
1081 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1082 | cmd.cmd_version = htobe32(0); | |
1083 | ||
bdcbd52e JR |
1084 | /* |
1085 | * Merge the cmd and connection request to prevent a write-write | |
1086 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1087 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1088 | */ | |
1089 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1090 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1091 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1092 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1093 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1094 | "Error sending get_metadata request: %s", | |
1095 | bt_socket_errormsg()); | |
7cdc2bab MD |
1096 | goto error; |
1097 | } | |
7cdc2bab | 1098 | |
f6ccaed9 | 1099 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1100 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1101 | if (ret_len == 0) { |
1419db2b FD |
1102 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1103 | "Remote side has closed connection"); | |
7cdc2bab MD |
1104 | goto error; |
1105 | } | |
1cb3cdd7 | 1106 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1107 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1108 | "Error receiving get_metadata response: %s", | |
1109 | bt_socket_errormsg()); | |
7cdc2bab MD |
1110 | goto error; |
1111 | } | |
f6ccaed9 | 1112 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1113 | |
1114 | switch (be32toh(rp.status)) { | |
1115 | case LTTNG_VIEWER_METADATA_OK: | |
1419db2b | 1116 | BT_COMP_LOGD("Received get_metadata response: ok"); |
7cdc2bab MD |
1117 | break; |
1118 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
c28512ab FD |
1119 | BT_COMP_LOGD("Received get_metadata response: no new"); |
1120 | metadata_status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_END; | |
7cdc2bab MD |
1121 | goto end; |
1122 | case LTTNG_VIEWER_METADATA_ERR: | |
c28512ab FD |
1123 | /* |
1124 | * The Relayd cannot find this stream id. Maybe its | |
1125 | * gone already. This can happen in short lived UST app | |
1126 | * in a per-pid session. | |
1127 | */ | |
1128 | BT_COMP_LOGD("Received get_metadata response: error"); | |
1129 | metadata_status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_CLOSED; | |
1130 | goto end; | |
7cdc2bab | 1131 | default: |
1419db2b FD |
1132 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1133 | "Received get_metadata response: unknown"); | |
7cdc2bab MD |
1134 | goto error; |
1135 | } | |
1136 | ||
1137 | len = be64toh(rp.len); | |
2ece7dd0 | 1138 | BT_COMP_LOGD("Writing %" PRIu64" bytes to metadata", len); |
7cdc2bab | 1139 | if (len <= 0) { |
1419db2b FD |
1140 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1141 | "Erroneous response length"); | |
7cdc2bab MD |
1142 | goto error; |
1143 | } | |
1144 | ||
91d81473 | 1145 | data = calloc(1, len); |
7cdc2bab | 1146 | if (!data) { |
1419db2b FD |
1147 | BT_COMP_LOGE_APPEND_CAUSE_ERRNO(self_comp, |
1148 | "Failed to allocate data buffer", "."); | |
7cdc2bab MD |
1149 | goto error; |
1150 | } | |
4c66436f | 1151 | ret_len = lttng_live_recv(viewer_connection, data, len); |
7cdc2bab | 1152 | if (ret_len == 0) { |
2ece7dd0 | 1153 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1154 | goto error_free_data; |
1155 | } | |
1cb3cdd7 | 1156 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1157 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1158 | "Error receiving trace packet: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1159 | goto error_free_data; |
1160 | } | |
f6ccaed9 | 1161 | BT_ASSERT(ret_len == len); |
7cdc2bab MD |
1162 | |
1163 | do { | |
1164 | ret_len = fwrite(data, 1, len, fp); | |
1165 | } while (ret_len < 0 && errno == EINTR); | |
1166 | if (ret_len < 0) { | |
1419db2b FD |
1167 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1168 | "Writing in the metadata file stream"); | |
7cdc2bab MD |
1169 | goto error_free_data; |
1170 | } | |
f6ccaed9 | 1171 | BT_ASSERT(ret_len == len); |
7cdc2bab | 1172 | free(data); |
c28512ab FD |
1173 | *reply_len = len; |
1174 | metadata_status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_OK; | |
1175 | ||
1176 | goto end; | |
7cdc2bab MD |
1177 | |
1178 | error_free_data: | |
1179 | free(data); | |
1180 | error: | |
c28512ab FD |
1181 | metadata_status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR; |
1182 | ||
1183 | end: | |
1184 | return metadata_status; | |
7cdc2bab MD |
1185 | } |
1186 | ||
1187 | /* | |
1188 | * Assign the fields from a lttng_viewer_index to a packet_index. | |
1189 | */ | |
1190 | static | |
1191 | void lttng_index_to_packet_index(struct lttng_viewer_index *lindex, | |
1192 | struct packet_index *pindex) | |
1193 | { | |
f6ccaed9 PP |
1194 | BT_ASSERT(lindex); |
1195 | BT_ASSERT(pindex); | |
7cdc2bab MD |
1196 | |
1197 | pindex->offset = be64toh(lindex->offset); | |
1198 | pindex->packet_size = be64toh(lindex->packet_size); | |
1199 | pindex->content_size = be64toh(lindex->content_size); | |
1200 | pindex->ts_cycles.timestamp_begin = be64toh(lindex->timestamp_begin); | |
1201 | pindex->ts_cycles.timestamp_end = be64toh(lindex->timestamp_end); | |
1202 | pindex->events_discarded = be64toh(lindex->events_discarded); | |
1203 | } | |
1204 | ||
1205 | BT_HIDDEN | |
14f28187 FD |
1206 | enum lttng_live_iterator_status lttng_live_get_next_index( |
1207 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
7cdc2bab MD |
1208 | struct lttng_live_stream_iterator *stream, |
1209 | struct packet_index *index) | |
1210 | { | |
1211 | struct lttng_viewer_cmd cmd; | |
1212 | struct lttng_viewer_get_next_index rq; | |
7cdc2bab | 1213 | struct lttng_viewer_index rp; |
0f1979c3 | 1214 | enum lttng_live_iterator_status retstatus = LTTNG_LIVE_ITERATOR_STATUS_OK; |
14f28187 | 1215 | struct live_viewer_connection *viewer_connection = |
1419db2b FD |
1216 | lttng_live_msg_iter->viewer_connection; |
1217 | bt_self_component *self_comp = viewer_connection->self_comp; | |
7cdc2bab | 1218 | struct lttng_live_trace *trace = stream->trace; |
bdcbd52e JR |
1219 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1220 | char cmd_buf[cmd_buf_len]; | |
0f1979c3 FD |
1221 | uint32_t flags, status; |
1222 | ssize_t ret_len; | |
7cdc2bab MD |
1223 | |
1224 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); | |
1225 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1226 | cmd.cmd_version = htobe32(0); | |
1227 | ||
bdcbd52e | 1228 | |
7cdc2bab MD |
1229 | memset(&rq, 0, sizeof(rq)); |
1230 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1231 | ||
bdcbd52e JR |
1232 | /* |
1233 | * Merge the cmd and connection request to prevent a write-write | |
1234 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1235 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1236 | */ | |
1237 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1238 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1239 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1240 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1241 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1242 | "Error sending get_next_index request: %s", | |
1243 | bt_socket_errormsg()); | |
7cdc2bab MD |
1244 | goto error; |
1245 | } | |
7cdc2bab | 1246 | |
f6ccaed9 | 1247 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1248 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1249 | if (ret_len == 0) { |
1419db2b FD |
1250 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1251 | "Remote side has closed connection"); | |
7cdc2bab MD |
1252 | goto error; |
1253 | } | |
1cb3cdd7 | 1254 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1255 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1256 | "Error receiving get_next_index response: %s", | |
1257 | bt_socket_errormsg()); | |
7cdc2bab MD |
1258 | goto error; |
1259 | } | |
f6ccaed9 | 1260 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1261 | |
1262 | flags = be32toh(rp.flags); | |
1263 | status = be32toh(rp.status); | |
1264 | ||
1265 | switch (status) { | |
1266 | case LTTNG_VIEWER_INDEX_INACTIVE: | |
1267 | { | |
1268 | uint64_t ctf_stream_class_id; | |
1269 | ||
1419db2b | 1270 | BT_COMP_LOGD("Received get_next_index response: inactive"); |
7cdc2bab MD |
1271 | memset(index, 0, sizeof(struct packet_index)); |
1272 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); | |
14f28187 | 1273 | stream->current_inactivity_ts = index->ts_cycles.timestamp_end; |
7cdc2bab MD |
1274 | ctf_stream_class_id = be64toh(rp.stream_id); |
1275 | if (stream->ctf_stream_class_id != -1ULL) { | |
f6ccaed9 | 1276 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1277 | ctf_stream_class_id); |
1278 | } else { | |
1279 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1280 | } | |
1281 | stream->state = LTTNG_LIVE_STREAM_QUIESCENT; | |
1282 | break; | |
1283 | } | |
1284 | case LTTNG_VIEWER_INDEX_OK: | |
1285 | { | |
1286 | uint64_t ctf_stream_class_id; | |
1287 | ||
1419db2b | 1288 | BT_COMP_LOGD("Received get_next_index response: OK"); |
7cdc2bab MD |
1289 | lttng_index_to_packet_index(&rp, index); |
1290 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1291 | if (stream->ctf_stream_class_id != -1ULL) { | |
f6ccaed9 | 1292 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1293 | ctf_stream_class_id); |
1294 | } else { | |
1295 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1296 | } | |
1297 | ||
1298 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_DATA; | |
7cdc2bab MD |
1299 | |
1300 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
1419db2b | 1301 | BT_COMP_LOGD("Received get_next_index response: new metadata needed"); |
7cdc2bab MD |
1302 | trace->new_metadata_needed = true; |
1303 | } | |
1304 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
1419db2b | 1305 | BT_COMP_LOGD("Received get_next_index response: new streams needed"); |
14f28187 | 1306 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab MD |
1307 | } |
1308 | break; | |
1309 | } | |
1310 | case LTTNG_VIEWER_INDEX_RETRY: | |
1419db2b | 1311 | BT_COMP_LOGD("Received get_next_index response: retry"); |
7cdc2bab | 1312 | memset(index, 0, sizeof(struct packet_index)); |
14f28187 | 1313 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
7cdc2bab MD |
1314 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; |
1315 | goto end; | |
1316 | case LTTNG_VIEWER_INDEX_HUP: | |
1419db2b | 1317 | BT_COMP_LOGD("Received get_next_index response: stream hung up"); |
7cdc2bab MD |
1318 | memset(index, 0, sizeof(struct packet_index)); |
1319 | index->offset = EOF; | |
14f28187 | 1320 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab | 1321 | stream->state = LTTNG_LIVE_STREAM_EOF; |
4a39caef | 1322 | stream->has_stream_hung_up = true; |
7cdc2bab MD |
1323 | break; |
1324 | case LTTNG_VIEWER_INDEX_ERR: | |
1419db2b | 1325 | BT_COMP_LOGD("Received get_next_index response: error"); |
7cdc2bab MD |
1326 | memset(index, 0, sizeof(struct packet_index)); |
1327 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1328 | goto error; | |
1329 | default: | |
1419db2b | 1330 | BT_COMP_LOGD("Received get_next_index response: unknown value"); |
7cdc2bab MD |
1331 | memset(index, 0, sizeof(struct packet_index)); |
1332 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1333 | goto error; | |
1334 | } | |
1335 | end: | |
1336 | return retstatus; | |
1337 | ||
1338 | error: | |
9b4f9b42 | 1339 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
14f28187 | 1340 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1341 | } else { |
14f28187 | 1342 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
4c66436f | 1343 | } |
7cdc2bab MD |
1344 | return retstatus; |
1345 | } | |
1346 | ||
1347 | BT_HIDDEN | |
18a1979b | 1348 | enum ctf_msg_iter_medium_status lttng_live_get_stream_bytes( |
14f28187 FD |
1349 | struct lttng_live_msg_iter *lttng_live_msg_iter, |
1350 | struct lttng_live_stream_iterator *stream, uint8_t *buf, | |
1351 | uint64_t offset, uint64_t req_len, uint64_t *recv_len) | |
7cdc2bab | 1352 | { |
18a1979b | 1353 | enum ctf_msg_iter_medium_status retstatus = CTF_MSG_ITER_MEDIUM_STATUS_OK; |
0f1979c3 | 1354 | struct lttng_viewer_trace_packet rp; |
7cdc2bab MD |
1355 | struct lttng_viewer_cmd cmd; |
1356 | struct lttng_viewer_get_packet rq; | |
14f28187 | 1357 | struct live_viewer_connection *viewer_connection = |
1419db2b FD |
1358 | lttng_live_msg_iter->viewer_connection; |
1359 | bt_self_component *self_comp = viewer_connection->self_comp; | |
7cdc2bab | 1360 | struct lttng_live_trace *trace = stream->trace; |
bdcbd52e JR |
1361 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1362 | char cmd_buf[cmd_buf_len]; | |
0f1979c3 FD |
1363 | uint32_t flags, status; |
1364 | ssize_t ret_len; | |
7cdc2bab | 1365 | |
2ece7dd0 | 1366 | BT_COMP_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64 ", req_len=%" PRIu64, |
7cdc2bab MD |
1367 | offset, req_len); |
1368 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); | |
1369 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1370 | cmd.cmd_version = htobe32(0); | |
1371 | ||
1372 | memset(&rq, 0, sizeof(rq)); | |
1373 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1374 | rq.offset = htobe64(offset); | |
1375 | rq.len = htobe32(req_len); | |
1376 | ||
bdcbd52e JR |
1377 | /* |
1378 | * Merge the cmd and connection request to prevent a write-write | |
1379 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1380 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1381 | */ | |
1382 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1383 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1384 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1385 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1386 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1387 | "Error sending get_data_packet request: %s", | |
1388 | bt_socket_errormsg()); | |
7cdc2bab MD |
1389 | goto error; |
1390 | } | |
7cdc2bab | 1391 | |
f6ccaed9 | 1392 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1393 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1394 | if (ret_len == 0) { |
1419db2b FD |
1395 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1396 | "Remote side has closed connection"); | |
7cdc2bab MD |
1397 | goto error; |
1398 | } | |
1cb3cdd7 | 1399 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1400 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1401 | "Socket error receiving get_data response: %s", | |
1402 | bt_socket_errormsg()); | |
7cdc2bab MD |
1403 | goto error; |
1404 | } | |
1405 | if (ret_len != sizeof(rp)) { | |
1419db2b FD |
1406 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "get_data_packet: " |
1407 | "expected %zu, received %zd", sizeof(rp), ret_len); | |
7cdc2bab MD |
1408 | goto error; |
1409 | } | |
1410 | ||
1411 | flags = be32toh(rp.flags); | |
1412 | status = be32toh(rp.status); | |
1413 | ||
1414 | switch (status) { | |
1415 | case LTTNG_VIEWER_GET_PACKET_OK: | |
1416 | req_len = be32toh(rp.len); | |
1419db2b FD |
1417 | BT_COMP_LOGD("Received get_data_packet response: Ok, " |
1418 | "packet size : %" PRIu64 "", req_len); | |
7cdc2bab MD |
1419 | break; |
1420 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
1421 | /* Unimplemented by relay daemon */ | |
1419db2b | 1422 | BT_COMP_LOGD("Received get_data_packet response: retry"); |
18a1979b | 1423 | retstatus = CTF_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1424 | goto end; |
1425 | case LTTNG_VIEWER_GET_PACKET_ERR: | |
1426 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
2ece7dd0 | 1427 | BT_COMP_LOGD("get_data_packet: new metadata needed, try again later"); |
7cdc2bab MD |
1428 | trace->new_metadata_needed = true; |
1429 | } | |
1430 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
2ece7dd0 | 1431 | BT_COMP_LOGD("get_data_packet: new streams needed, try again later"); |
14f28187 | 1432 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab MD |
1433 | } |
1434 | if (flags & (LTTNG_VIEWER_FLAG_NEW_METADATA | |
1435 | | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
18a1979b | 1436 | retstatus = CTF_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1437 | goto end; |
1438 | } | |
1419db2b FD |
1439 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1440 | "Received get_data_packet response: error"); | |
7cdc2bab MD |
1441 | goto error; |
1442 | case LTTNG_VIEWER_GET_PACKET_EOF: | |
18a1979b | 1443 | retstatus = CTF_MSG_ITER_MEDIUM_STATUS_EOF; |
7cdc2bab MD |
1444 | goto end; |
1445 | default: | |
1419db2b FD |
1446 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1447 | "Received get_data_packet response: unknown"); | |
7cdc2bab MD |
1448 | goto error; |
1449 | } | |
1450 | ||
1451 | if (req_len == 0) { | |
1452 | goto error; | |
1453 | } | |
1454 | ||
4c66436f | 1455 | ret_len = lttng_live_recv(viewer_connection, buf, req_len); |
7cdc2bab | 1456 | if (ret_len == 0) { |
1419db2b FD |
1457 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1458 | "Remote side has closed connection"); | |
7cdc2bab MD |
1459 | goto error; |
1460 | } | |
1cb3cdd7 | 1461 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1462 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1463 | "Error receiving trace packet: %s", | |
1464 | bt_socket_errormsg()); | |
7cdc2bab MD |
1465 | goto error; |
1466 | } | |
f6ccaed9 | 1467 | BT_ASSERT(ret_len == req_len); |
7cdc2bab MD |
1468 | *recv_len = ret_len; |
1469 | end: | |
1470 | return retstatus; | |
1471 | ||
1472 | error: | |
9b4f9b42 | 1473 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
18a1979b | 1474 | retstatus = CTF_MSG_ITER_MEDIUM_STATUS_AGAIN; |
4c66436f | 1475 | } else { |
18a1979b | 1476 | retstatus = CTF_MSG_ITER_MEDIUM_STATUS_ERROR; |
4c66436f | 1477 | } |
7cdc2bab MD |
1478 | return retstatus; |
1479 | } | |
1480 | ||
1481 | /* | |
1482 | * Request new streams for a session. | |
1483 | */ | |
1484 | BT_HIDDEN | |
14f28187 | 1485 | enum lttng_live_iterator_status lttng_live_get_new_streams( |
851de941 SM |
1486 | struct lttng_live_session *session, |
1487 | bt_self_message_iterator *self_msg_iter) | |
7cdc2bab | 1488 | { |
14f28187 FD |
1489 | enum lttng_live_iterator_status status = |
1490 | LTTNG_LIVE_ITERATOR_STATUS_OK; | |
7cdc2bab MD |
1491 | struct lttng_viewer_cmd cmd; |
1492 | struct lttng_viewer_new_streams_request rq; | |
1493 | struct lttng_viewer_new_streams_response rp; | |
14f28187 FD |
1494 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1495 | session->lttng_live_msg_iter; | |
1496 | struct live_viewer_connection *viewer_connection = | |
1497 | lttng_live_msg_iter->viewer_connection; | |
1419db2b | 1498 | bt_self_component *self_comp = viewer_connection->self_comp; |
7cdc2bab | 1499 | uint32_t streams_count; |
bdcbd52e JR |
1500 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1501 | char cmd_buf[cmd_buf_len]; | |
0f1979c3 | 1502 | ssize_t ret_len; |
7cdc2bab MD |
1503 | |
1504 | if (!session->new_streams_needed) { | |
14f28187 | 1505 | return LTTNG_LIVE_ITERATOR_STATUS_OK; |
7cdc2bab MD |
1506 | } |
1507 | ||
1508 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); | |
1509 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1510 | cmd.cmd_version = htobe32(0); | |
1511 | ||
1512 | memset(&rq, 0, sizeof(rq)); | |
1513 | rq.session_id = htobe64(session->id); | |
1514 | ||
bdcbd52e JR |
1515 | /* |
1516 | * Merge the cmd and connection request to prevent a write-write | |
1517 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1518 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1519 | */ | |
1520 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1521 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1522 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1523 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1524 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1525 | "Error sending get_new_streams request: %s", | |
1526 | bt_socket_errormsg()); | |
7cdc2bab MD |
1527 | goto error; |
1528 | } | |
7cdc2bab | 1529 | |
f6ccaed9 | 1530 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1531 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1532 | if (ret_len == 0) { |
1419db2b FD |
1533 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1534 | "Remote side has closed connection"); | |
7cdc2bab MD |
1535 | goto error; |
1536 | } | |
1cb3cdd7 | 1537 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1538 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1539 | "Error receiving get_new_streams response"); | |
7cdc2bab MD |
1540 | goto error; |
1541 | } | |
f6ccaed9 | 1542 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1543 | |
1544 | streams_count = be32toh(rp.streams_count); | |
1545 | ||
1546 | switch(be32toh(rp.status)) { | |
1547 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1548 | session->new_streams_needed = false; | |
1549 | break; | |
1550 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1551 | session->new_streams_needed = false; | |
1552 | goto end; | |
1553 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1554 | session->new_streams_needed = false; | |
1555 | session->closed = true; | |
14f28187 | 1556 | status = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab MD |
1557 | goto end; |
1558 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
1419db2b | 1559 | BT_COMP_LOGD("Received get_new_streams response: error"); |
7cdc2bab MD |
1560 | goto error; |
1561 | default: | |
1419db2b FD |
1562 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1563 | "Received get_new_streams response: Unknown:" | |
1564 | "return code %u", be32toh(rp.status)); | |
7cdc2bab MD |
1565 | goto error; |
1566 | } | |
1567 | ||
851de941 | 1568 | if (receive_streams(session, streams_count, self_msg_iter)) { |
1419db2b | 1569 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Error receiving streams"); |
7cdc2bab MD |
1570 | goto error; |
1571 | } | |
1572 | end: | |
1573 | return status; | |
1574 | ||
1575 | error: | |
9b4f9b42 | 1576 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
14f28187 | 1577 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1578 | } else { |
14f28187 | 1579 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
1419db2b | 1580 | BT_COMP_LOGE("Error receiving streams."); |
4c66436f | 1581 | } |
7cdc2bab MD |
1582 | return status; |
1583 | } | |
1584 | ||
1585 | BT_HIDDEN | |
14f28187 FD |
1586 | struct live_viewer_connection *live_viewer_connection_create( |
1587 | const char *url, bool in_query, | |
550004b4 | 1588 | struct lttng_live_msg_iter *lttng_live_msg_iter, |
1419db2b FD |
1589 | bt_self_component *self_comp, |
1590 | bt_self_component_class *self_comp_class, | |
550004b4 | 1591 | bt_logging_level log_level) |
7cdc2bab | 1592 | { |
14f28187 | 1593 | struct live_viewer_connection *viewer_connection; |
7cdc2bab | 1594 | |
14f28187 | 1595 | viewer_connection = g_new0(struct live_viewer_connection, 1); |
7cdc2bab | 1596 | |
550004b4 | 1597 | if (bt_socket_init(log_level) != 0) { |
1419db2b FD |
1598 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
1599 | self_comp_class, "Failed to init socket"); | |
1cb3cdd7 MJ |
1600 | goto error; |
1601 | } | |
1602 | ||
550004b4 PP |
1603 | viewer_connection->log_level = log_level; |
1604 | ||
1419db2b FD |
1605 | viewer_connection->self_comp = self_comp; |
1606 | viewer_connection->self_comp_class = self_comp_class; | |
550004b4 | 1607 | |
1cb3cdd7 | 1608 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab | 1609 | viewer_connection->port = -1; |
14f28187 FD |
1610 | viewer_connection->in_query = in_query; |
1611 | viewer_connection->lttng_live_msg_iter = lttng_live_msg_iter; | |
7cdc2bab MD |
1612 | viewer_connection->url = g_string_new(url); |
1613 | if (!viewer_connection->url) { | |
1419db2b FD |
1614 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
1615 | self_comp_class, "Failed to allocate URL buffer"); | |
7cdc2bab MD |
1616 | goto error; |
1617 | } | |
1618 | ||
2ece7dd0 | 1619 | BT_COMP_LOGI("Establishing connection to url \"%s\"...", url); |
7cdc2bab | 1620 | if (lttng_live_connect_viewer(viewer_connection)) { |
1419db2b FD |
1621 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
1622 | self_comp_class, "Failed to establish connection: " | |
1623 | "url=\"%s\"", url); | |
1624 | goto error; | |
7cdc2bab | 1625 | } |
2ece7dd0 | 1626 | BT_COMP_LOGI("Connection to url \"%s\" is established", url); |
7cdc2bab MD |
1627 | return viewer_connection; |
1628 | ||
7cdc2bab | 1629 | error: |
2f767475 PP |
1630 | if (viewer_connection) { |
1631 | live_viewer_connection_destroy(viewer_connection); | |
1632 | } | |
1633 | ||
7cdc2bab MD |
1634 | return NULL; |
1635 | } | |
1636 | ||
1637 | BT_HIDDEN | |
14f28187 FD |
1638 | void live_viewer_connection_destroy( |
1639 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 1640 | { |
2ece7dd0 | 1641 | BT_COMP_LOGI("Closing connection to url \"%s\"", viewer_connection->url->str); |
b9e6ec43 FD |
1642 | |
1643 | if (!viewer_connection) { | |
1644 | goto end; | |
1645 | } | |
1646 | ||
7cdc2bab | 1647 | lttng_live_disconnect_viewer(viewer_connection); |
b9e6ec43 | 1648 | |
2f767475 PP |
1649 | if (viewer_connection->url) { |
1650 | g_string_free(viewer_connection->url, true); | |
1651 | } | |
b9e6ec43 | 1652 | |
94b828f3 | 1653 | if (viewer_connection->relay_hostname) { |
14f28187 | 1654 | g_string_free(viewer_connection->relay_hostname, true); |
94b828f3 | 1655 | } |
b9e6ec43 | 1656 | |
94b828f3 | 1657 | if (viewer_connection->target_hostname) { |
14f28187 | 1658 | g_string_free(viewer_connection->target_hostname, true); |
94b828f3 | 1659 | } |
b9e6ec43 | 1660 | |
94b828f3 | 1661 | if (viewer_connection->session_name) { |
14f28187 | 1662 | g_string_free(viewer_connection->session_name, true); |
94b828f3 | 1663 | } |
b9e6ec43 | 1664 | |
7cdc2bab | 1665 | g_free(viewer_connection); |
1cb3cdd7 MJ |
1666 | |
1667 | bt_socket_fini(); | |
b9e6ec43 FD |
1668 | |
1669 | end: | |
1670 | return; | |
7cdc2bab | 1671 | } |