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 | |
7cdc2bab MD |
29 | #include <stdio.h> |
30 | #include <stdint.h> | |
31 | #include <stdlib.h> | |
32 | #include <stdbool.h> | |
33 | #include <unistd.h> | |
34 | #include <glib.h> | |
35 | #include <inttypes.h> | |
7cdc2bab | 36 | #include <sys/types.h> |
7cdc2bab | 37 | #include <fcntl.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 | ||
14f28187 FD |
319 | static |
320 | void connection_release(bt_object *obj) | |
7cdc2bab | 321 | { |
14f28187 FD |
322 | struct live_viewer_connection *conn = |
323 | container_of(obj, struct live_viewer_connection, obj); | |
7cdc2bab | 324 | |
14f28187 | 325 | live_viewer_connection_destroy(conn); |
7cdc2bab MD |
326 | } |
327 | ||
328 | static | |
14f28187 | 329 | int list_update_session(bt_value *results, |
7cdc2bab | 330 | const struct lttng_viewer_session *session, |
c01594de | 331 | bool *_found, struct live_viewer_connection *viewer_connection) |
7cdc2bab | 332 | { |
1419db2b FD |
333 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
334 | bt_self_component *self_comp = viewer_connection->self_comp; | |
f80e9ec1 FD |
335 | int ret = 0; |
336 | uint64_t i, len; | |
b19ff26f PP |
337 | bt_value *map = NULL; |
338 | bt_value *hostname = NULL; | |
339 | bt_value *session_name = NULL; | |
340 | bt_value *btval = NULL; | |
7cdc2bab MD |
341 | bool found = false; |
342 | ||
393729a6 | 343 | len = bt_value_array_get_length(results); |
7cdc2bab MD |
344 | for (i = 0; i < len; i++) { |
345 | const char *hostname_str = NULL; | |
346 | const char *session_name_str = NULL; | |
347 | ||
f80e9ec1 | 348 | map = bt_value_array_borrow_element_by_index(results, i); |
14f28187 | 349 | hostname = bt_value_map_borrow_entry_value(map, "target-hostname"); |
7cdc2bab | 350 | if (!hostname) { |
1419db2b FD |
351 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
352 | self_comp_class, | |
353 | "Error borrowing \"target-hostname\" entry."); | |
14f28187 | 354 | ret = -1; |
7cdc2bab MD |
355 | goto end; |
356 | } | |
14f28187 | 357 | session_name = bt_value_map_borrow_entry_value(map, "session-name"); |
7cdc2bab | 358 | if (!session_name) { |
1419db2b FD |
359 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
360 | self_comp_class, | |
361 | "Error borrowing \"session-name\" entry."); | |
14f28187 | 362 | ret = -1; |
7cdc2bab MD |
363 | goto end; |
364 | } | |
601b0d3c PP |
365 | hostname_str = bt_value_string_get(hostname); |
366 | session_name_str = bt_value_string_get(session_name); | |
7cdc2bab | 367 | |
2242b43d PP |
368 | if (strcmp(session->hostname, hostname_str) == 0 |
369 | && strcmp(session->session_name, session_name_str) == 0) { | |
7cdc2bab MD |
370 | int64_t val; |
371 | uint32_t streams = be32toh(session->streams); | |
372 | uint32_t clients = be32toh(session->clients); | |
373 | ||
374 | found = true; | |
375 | ||
14f28187 | 376 | btval = bt_value_map_borrow_entry_value(map, "stream-count"); |
7cdc2bab | 377 | if (!btval) { |
1419db2b FD |
378 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( |
379 | self_comp, self_comp_class, | |
380 | "Error borrowing \"stream-count\" entry."); | |
14f28187 | 381 | ret = -1; |
7cdc2bab MD |
382 | goto end; |
383 | } | |
a91cb83e | 384 | val = bt_value_integer_unsigned_get(btval); |
7cdc2bab MD |
385 | /* sum */ |
386 | val += streams; | |
a91cb83e | 387 | bt_value_integer_unsigned_set(btval, val); |
7cdc2bab | 388 | |
14f28187 | 389 | btval = bt_value_map_borrow_entry_value(map, "client-count"); |
7cdc2bab | 390 | if (!btval) { |
1419db2b FD |
391 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE( |
392 | self_comp, self_comp_class, | |
393 | "Error borrowing \"client-count\" entry."); | |
14f28187 | 394 | ret = -1; |
7cdc2bab MD |
395 | goto end; |
396 | } | |
a91cb83e | 397 | val = bt_value_integer_unsigned_get(btval); |
7cdc2bab | 398 | /* max */ |
91d81473 | 399 | val = bt_max_t(int64_t, clients, val); |
a91cb83e | 400 | bt_value_integer_unsigned_set(btval, val); |
7cdc2bab MD |
401 | } |
402 | ||
7cdc2bab MD |
403 | if (found) { |
404 | break; | |
405 | } | |
406 | } | |
407 | end: | |
7cdc2bab MD |
408 | *_found = found; |
409 | return ret; | |
410 | } | |
411 | ||
412 | static | |
14f28187 | 413 | int list_append_session(bt_value *results, |
7cdc2bab | 414 | GString *base_url, |
c01594de PP |
415 | const struct lttng_viewer_session *session, |
416 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 417 | { |
14f28187 | 418 | int ret = 0; |
1419db2b | 419 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
d24d5663 PP |
420 | bt_value_map_insert_entry_status insert_status; |
421 | bt_value_array_append_element_status append_status; | |
b19ff26f | 422 | bt_value *map = NULL; |
7cdc2bab MD |
423 | GString *url = NULL; |
424 | bool found = false; | |
425 | ||
426 | /* | |
427 | * If the session already exists, add the stream count to it, | |
428 | * and do max of client counts. | |
429 | */ | |
c01594de | 430 | ret = list_update_session(results, session, &found, viewer_connection); |
14f28187 | 431 | if (ret || found) { |
7cdc2bab MD |
432 | goto end; |
433 | } | |
434 | ||
14f28187 | 435 | map = bt_value_map_create(); |
7cdc2bab | 436 | if (!map) { |
1419db2b FD |
437 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
438 | "Error creating map value."); | |
14f28187 | 439 | ret = -1; |
7cdc2bab MD |
440 | goto end; |
441 | } | |
442 | ||
443 | if (base_url->len < 1) { | |
1419db2b FD |
444 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
445 | "Error: base_url length smaller than 1."); | |
14f28187 | 446 | ret = -1; |
7cdc2bab MD |
447 | goto end; |
448 | } | |
449 | /* | |
450 | * key = "url", | |
451 | * value = <string>, | |
452 | */ | |
453 | url = g_string_new(base_url->str); | |
454 | g_string_append(url, "/host/"); | |
455 | g_string_append(url, session->hostname); | |
456 | g_string_append_c(url, '/'); | |
457 | g_string_append(url, session->session_name); | |
458 | ||
d24d5663 PP |
459 | insert_status = bt_value_map_insert_string_entry(map, "url", url->str); |
460 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
1419db2b FD |
461 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
462 | "Error inserting \"url\" entry."); | |
14f28187 | 463 | ret = -1; |
7cdc2bab MD |
464 | goto end; |
465 | } | |
466 | ||
467 | /* | |
468 | * key = "target-hostname", | |
469 | * value = <string>, | |
470 | */ | |
d24d5663 | 471 | insert_status = bt_value_map_insert_string_entry(map, "target-hostname", |
7cdc2bab | 472 | session->hostname); |
d24d5663 | 473 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
1419db2b FD |
474 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
475 | "Error inserting \"target-hostname\" entry."); | |
14f28187 | 476 | ret = -1; |
7cdc2bab MD |
477 | goto end; |
478 | } | |
479 | ||
480 | /* | |
481 | * key = "session-name", | |
482 | * value = <string>, | |
483 | */ | |
d24d5663 | 484 | insert_status = bt_value_map_insert_string_entry(map, "session-name", |
7cdc2bab | 485 | session->session_name); |
d24d5663 | 486 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
1419db2b FD |
487 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
488 | "Error inserting \"session-name\" entry."); | |
14f28187 | 489 | ret = -1; |
7cdc2bab MD |
490 | goto end; |
491 | } | |
492 | ||
493 | /* | |
494 | * key = "timer-us", | |
495 | * value = <integer>, | |
496 | */ | |
497 | { | |
498 | uint32_t live_timer = be32toh(session->live_timer); | |
499 | ||
a91cb83e | 500 | insert_status = bt_value_map_insert_unsigned_integer_entry( |
fdd3a2da | 501 | map, "timer-us", live_timer); |
d24d5663 | 502 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
1419db2b FD |
503 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
504 | "Error inserting \"timer-us\" entry."); | |
14f28187 | 505 | ret = -1; |
7cdc2bab MD |
506 | goto end; |
507 | } | |
508 | } | |
509 | ||
510 | /* | |
511 | * key = "stream-count", | |
512 | * value = <integer>, | |
513 | */ | |
514 | { | |
515 | uint32_t streams = be32toh(session->streams); | |
516 | ||
a91cb83e | 517 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, |
fdd3a2da | 518 | "stream-count", streams); |
d24d5663 | 519 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
1419db2b FD |
520 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
521 | "Error inserting \"stream-count\" entry."); | |
14f28187 | 522 | ret = -1; |
7cdc2bab MD |
523 | goto end; |
524 | } | |
525 | } | |
526 | ||
7cdc2bab MD |
527 | /* |
528 | * key = "client-count", | |
529 | * value = <integer>, | |
530 | */ | |
531 | { | |
532 | uint32_t clients = be32toh(session->clients); | |
533 | ||
a91cb83e | 534 | insert_status = bt_value_map_insert_unsigned_integer_entry(map, |
fdd3a2da | 535 | "client-count", clients); |
d24d5663 | 536 | if (insert_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
1419db2b FD |
537 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
538 | "Error inserting \"client-count\" entry."); | |
14f28187 | 539 | ret = -1; |
7cdc2bab MD |
540 | goto end; |
541 | } | |
542 | } | |
543 | ||
d24d5663 PP |
544 | append_status = bt_value_array_append_element(results, map); |
545 | if (append_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) { | |
1419db2b FD |
546 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
547 | "Error appending map to results."); | |
14f28187 FD |
548 | ret = -1; |
549 | } | |
550 | ||
7cdc2bab MD |
551 | end: |
552 | if (url) { | |
14f28187 | 553 | g_string_free(url, true); |
7cdc2bab | 554 | } |
c5b9b441 | 555 | BT_VALUE_PUT_REF_AND_RESET(map); |
7cdc2bab MD |
556 | return ret; |
557 | } | |
558 | ||
559 | /* | |
560 | * Data structure returned: | |
561 | * | |
562 | * { | |
563 | * <array> = { | |
564 | * [n] = { | |
565 | * <map> = { | |
566 | * { | |
567 | * key = "url", | |
568 | * value = <string>, | |
569 | * }, | |
570 | * { | |
571 | * key = "target-hostname", | |
572 | * value = <string>, | |
573 | * }, | |
574 | * { | |
575 | * key = "session-name", | |
576 | * value = <string>, | |
577 | * }, | |
578 | * { | |
579 | * key = "timer-us", | |
580 | * value = <integer>, | |
581 | * }, | |
582 | * { | |
583 | * key = "stream-count", | |
584 | * value = <integer>, | |
585 | * }, | |
586 | * { | |
587 | * key = "client-count", | |
588 | * value = <integer>, | |
589 | * }, | |
590 | * }, | |
591 | * } | |
592 | * } | |
593 | */ | |
594 | ||
595 | BT_HIDDEN | |
d24d5663 | 596 | bt_component_class_query_method_status live_viewer_connection_list_sessions( |
14f28187 FD |
597 | struct live_viewer_connection *viewer_connection, |
598 | const bt_value **user_result) | |
7cdc2bab | 599 | { |
1419db2b | 600 | bt_self_component_class *self_comp_class = viewer_connection->self_comp_class; |
d24d5663 PP |
601 | bt_component_class_query_method_status status = |
602 | BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_OK; | |
14f28187 | 603 | bt_value *result = NULL; |
7cdc2bab MD |
604 | struct lttng_viewer_cmd cmd; |
605 | struct lttng_viewer_list_sessions list; | |
606 | uint32_t i, sessions_count; | |
607 | ssize_t ret_len; | |
608 | ||
14f28187 FD |
609 | result = bt_value_array_create(); |
610 | if (!result) { | |
1419db2b FD |
611 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
612 | "Error creating array"); | |
d24d5663 | 613 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_MEMORY_ERROR; |
7cdc2bab MD |
614 | goto error; |
615 | } | |
616 | ||
617 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
618 | cmd.data_size = htobe64((uint64_t) 0); | |
619 | cmd.cmd_version = htobe32(0); | |
620 | ||
4c66436f | 621 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 | 622 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
623 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
624 | "Error sending cmd: %s", bt_socket_errormsg()); | |
d24d5663 | 625 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
626 | goto error; |
627 | } | |
f6ccaed9 | 628 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 629 | |
4c66436f | 630 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 631 | if (ret_len == 0) { |
1419db2b FD |
632 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
633 | "Remote side has closed connection"); | |
d24d5663 | 634 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
635 | goto error; |
636 | } | |
1cb3cdd7 | 637 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
638 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
639 | "Error receiving session list: %s", | |
640 | bt_socket_errormsg()); | |
d24d5663 | 641 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
642 | goto error; |
643 | } | |
f6ccaed9 | 644 | BT_ASSERT(ret_len == sizeof(list)); |
7cdc2bab MD |
645 | |
646 | sessions_count = be32toh(list.sessions_count); | |
647 | for (i = 0; i < sessions_count; i++) { | |
648 | struct lttng_viewer_session lsession; | |
649 | ||
14f28187 FD |
650 | ret_len = lttng_live_recv(viewer_connection, &lsession, |
651 | sizeof(lsession)); | |
7cdc2bab | 652 | if (ret_len == 0) { |
1419db2b FD |
653 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
654 | "Remote side has closed connection"); | |
d24d5663 | 655 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
656 | goto error; |
657 | } | |
1cb3cdd7 | 658 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
659 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
660 | "Error receiving session: %s", | |
661 | bt_socket_errormsg()); | |
d24d5663 | 662 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
663 | goto error; |
664 | } | |
f6ccaed9 | 665 | BT_ASSERT(ret_len == sizeof(lsession)); |
7cdc2bab MD |
666 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
667 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
14f28187 | 668 | if (list_append_session(result, viewer_connection->url, |
c01594de | 669 | &lsession, viewer_connection)) { |
1419db2b FD |
670 | BT_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp_class, |
671 | "Error appending session"); | |
d24d5663 | 672 | status = BT_COMPONENT_CLASS_QUERY_METHOD_STATUS_ERROR; |
7cdc2bab MD |
673 | goto error; |
674 | } | |
675 | } | |
14f28187 FD |
676 | |
677 | *user_result = result; | |
7cdc2bab MD |
678 | goto end; |
679 | error: | |
14f28187 | 680 | BT_VALUE_PUT_REF_AND_RESET(result); |
7cdc2bab | 681 | end: |
14f28187 | 682 | return status; |
7cdc2bab MD |
683 | } |
684 | ||
685 | static | |
14f28187 | 686 | int lttng_live_query_session_ids(struct lttng_live_msg_iter *lttng_live_msg_iter) |
7cdc2bab MD |
687 | { |
688 | struct lttng_viewer_cmd cmd; | |
689 | struct lttng_viewer_list_sessions list; | |
690 | struct lttng_viewer_session lsession; | |
691 | uint32_t i, sessions_count; | |
692 | ssize_t ret_len; | |
693 | uint64_t session_id; | |
14f28187 | 694 | struct live_viewer_connection *viewer_connection = |
1419db2b FD |
695 | lttng_live_msg_iter->viewer_connection; |
696 | bt_self_component *self_comp = viewer_connection->self_comp; | |
7cdc2bab MD |
697 | |
698 | cmd.cmd = htobe32(LTTNG_VIEWER_LIST_SESSIONS); | |
699 | cmd.data_size = htobe64((uint64_t) 0); | |
700 | cmd.cmd_version = htobe32(0); | |
701 | ||
4c66436f | 702 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 | 703 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
704 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Error sending cmd: %s", |
705 | bt_socket_errormsg()); | |
7cdc2bab MD |
706 | goto error; |
707 | } | |
f6ccaed9 | 708 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 709 | |
4c66436f | 710 | ret_len = lttng_live_recv(viewer_connection, &list, sizeof(list)); |
7cdc2bab | 711 | if (ret_len == 0) { |
1419db2b FD |
712 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
713 | "Remote side has closed connection"); | |
7cdc2bab MD |
714 | goto error; |
715 | } | |
1cb3cdd7 | 716 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
717 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
718 | "Error receiving session list: %s", | |
719 | bt_socket_errormsg()); | |
7cdc2bab MD |
720 | goto error; |
721 | } | |
f6ccaed9 | 722 | BT_ASSERT(ret_len == sizeof(list)); |
7cdc2bab MD |
723 | |
724 | sessions_count = be32toh(list.sessions_count); | |
725 | for (i = 0; i < sessions_count; i++) { | |
4c66436f | 726 | ret_len = lttng_live_recv(viewer_connection, |
7cdc2bab MD |
727 | &lsession, sizeof(lsession)); |
728 | if (ret_len == 0) { | |
1419db2b FD |
729 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
730 | "Remote side has closed connection"); | |
7cdc2bab MD |
731 | goto error; |
732 | } | |
1cb3cdd7 | 733 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
734 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
735 | "Error receiving session: %s", | |
736 | bt_socket_errormsg()); | |
7cdc2bab MD |
737 | goto error; |
738 | } | |
f6ccaed9 | 739 | BT_ASSERT(ret_len == sizeof(lsession)); |
7cdc2bab MD |
740 | lsession.hostname[LTTNG_VIEWER_HOST_NAME_MAX - 1] = '\0'; |
741 | lsession.session_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
742 | session_id = be64toh(lsession.id); | |
743 | ||
2ece7dd0 | 744 | BT_COMP_LOGI("Adding session %" PRIu64 " hostname: %s session_name: %s", |
06994c71 MD |
745 | session_id, lsession.hostname, lsession.session_name); |
746 | ||
7cdc2bab | 747 | if ((strncmp(lsession.session_name, |
94b828f3 | 748 | viewer_connection->session_name->str, |
1cb3cdd7 | 749 | LTTNG_VIEWER_NAME_MAX) == 0) && (strncmp(lsession.hostname, |
94b828f3 | 750 | viewer_connection->target_hostname->str, |
1cb3cdd7 | 751 | LTTNG_VIEWER_HOST_NAME_MAX) == 0)) { |
14f28187 | 752 | if (lttng_live_add_session(lttng_live_msg_iter, session_id, |
06994c71 MD |
753 | lsession.hostname, |
754 | lsession.session_name)) { | |
1419db2b FD |
755 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
756 | "Failed to add live session"); | |
7cdc2bab MD |
757 | goto error; |
758 | } | |
759 | } | |
760 | } | |
761 | ||
762 | return 0; | |
763 | ||
764 | error: | |
7cdc2bab MD |
765 | return -1; |
766 | } | |
767 | ||
768 | BT_HIDDEN | |
14f28187 FD |
769 | int lttng_live_create_viewer_session( |
770 | struct lttng_live_msg_iter *lttng_live_msg_iter) | |
7cdc2bab MD |
771 | { |
772 | struct lttng_viewer_cmd cmd; | |
773 | struct lttng_viewer_create_session_response resp; | |
774 | ssize_t ret_len; | |
14f28187 | 775 | struct live_viewer_connection *viewer_connection = |
1419db2b FD |
776 | lttng_live_msg_iter->viewer_connection; |
777 | bt_self_component *self_comp = viewer_connection->self_comp; | |
7cdc2bab MD |
778 | |
779 | cmd.cmd = htobe32(LTTNG_VIEWER_CREATE_SESSION); | |
780 | cmd.data_size = htobe64((uint64_t) 0); | |
781 | cmd.cmd_version = htobe32(0); | |
782 | ||
4c66436f | 783 | ret_len = lttng_live_send(viewer_connection, &cmd, sizeof(cmd)); |
1cb3cdd7 | 784 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
785 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Error sending cmd: %s", |
786 | bt_socket_errormsg()); | |
7cdc2bab MD |
787 | goto error; |
788 | } | |
f6ccaed9 | 789 | BT_ASSERT(ret_len == sizeof(cmd)); |
7cdc2bab | 790 | |
4c66436f | 791 | ret_len = lttng_live_recv(viewer_connection, &resp, sizeof(resp)); |
7cdc2bab | 792 | if (ret_len == 0) { |
1419db2b FD |
793 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
794 | "Remote side has closed connection"); | |
7cdc2bab MD |
795 | goto error; |
796 | } | |
1cb3cdd7 | 797 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
798 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
799 | "Error receiving create session reply: %s", | |
800 | bt_socket_errormsg()); | |
7cdc2bab MD |
801 | goto error; |
802 | } | |
f6ccaed9 | 803 | BT_ASSERT(ret_len == sizeof(resp)); |
7cdc2bab MD |
804 | |
805 | if (be32toh(resp.status) != LTTNG_VIEWER_CREATE_SESSION_OK) { | |
1419db2b FD |
806 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
807 | "Error creating viewer session"); | |
7cdc2bab MD |
808 | goto error; |
809 | } | |
14f28187 | 810 | if (lttng_live_query_session_ids(lttng_live_msg_iter)) { |
1419db2b FD |
811 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
812 | "Failed to query live viewer session ids"); | |
7cdc2bab MD |
813 | goto error; |
814 | } | |
815 | ||
816 | return 0; | |
817 | ||
818 | error: | |
819 | return -1; | |
820 | } | |
821 | ||
822 | static | |
823 | int receive_streams(struct lttng_live_session *session, | |
824 | uint32_t stream_count) | |
825 | { | |
826 | ssize_t ret_len; | |
827 | uint32_t i; | |
14f28187 | 828 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
0f1979c3 | 829 | session->lttng_live_msg_iter; |
14f28187 | 830 | struct live_viewer_connection *viewer_connection = |
0f1979c3 | 831 | lttng_live_msg_iter->viewer_connection; |
1419db2b | 832 | bt_self_component *self_comp = viewer_connection->self_comp; |
7cdc2bab | 833 | |
2ece7dd0 | 834 | BT_COMP_LOGI("Getting %" PRIu32 " new streams:", stream_count); |
7cdc2bab MD |
835 | for (i = 0; i < stream_count; i++) { |
836 | struct lttng_viewer_stream stream; | |
837 | struct lttng_live_stream_iterator *live_stream; | |
838 | uint64_t stream_id; | |
839 | uint64_t ctf_trace_id; | |
840 | ||
4c66436f | 841 | ret_len = lttng_live_recv(viewer_connection, &stream, sizeof(stream)); |
7cdc2bab | 842 | if (ret_len == 0) { |
1419db2b FD |
843 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
844 | "Remote side has closed connection"); | |
7cdc2bab MD |
845 | goto error; |
846 | } | |
1cb3cdd7 | 847 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
848 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
849 | "Error receiving stream"); | |
7cdc2bab MD |
850 | goto error; |
851 | } | |
f6ccaed9 | 852 | BT_ASSERT(ret_len == sizeof(stream)); |
7cdc2bab MD |
853 | stream.path_name[LTTNG_VIEWER_PATH_MAX - 1] = '\0'; |
854 | stream.channel_name[LTTNG_VIEWER_NAME_MAX - 1] = '\0'; | |
855 | stream_id = be64toh(stream.id); | |
856 | ctf_trace_id = be64toh(stream.ctf_trace_id); | |
857 | ||
858 | if (stream.metadata_flag) { | |
2ece7dd0 | 859 | BT_COMP_LOGI(" metadata stream %" PRIu64 " : %s/%s", |
0f1979c3 | 860 | stream_id, stream.path_name, stream.channel_name); |
7cdc2bab | 861 | if (lttng_live_metadata_create_stream(session, |
06994c71 MD |
862 | ctf_trace_id, stream_id, |
863 | stream.path_name)) { | |
1419db2b FD |
864 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
865 | "Error creating metadata stream"); | |
7cdc2bab MD |
866 | |
867 | goto error; | |
868 | } | |
d6e69534 | 869 | session->lazy_stream_msg_init = true; |
7cdc2bab | 870 | } else { |
2ece7dd0 | 871 | BT_COMP_LOGI(" stream %" PRIu64 " : %s/%s", |
0f1979c3 | 872 | stream_id, stream.path_name, stream.channel_name); |
7cdc2bab MD |
873 | live_stream = lttng_live_stream_iterator_create(session, |
874 | ctf_trace_id, stream_id); | |
875 | if (!live_stream) { | |
1419db2b FD |
876 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
877 | "Error creating stream"); | |
7cdc2bab MD |
878 | goto error; |
879 | } | |
880 | } | |
881 | } | |
882 | return 0; | |
883 | ||
884 | error: | |
885 | return -1; | |
886 | } | |
887 | ||
888 | BT_HIDDEN | |
eee8e741 FD |
889 | enum lttng_live_attach_session_status lttng_live_attach_session( |
890 | struct lttng_live_session *session) | |
7cdc2bab MD |
891 | { |
892 | struct lttng_viewer_cmd cmd; | |
eee8e741 | 893 | enum lttng_live_attach_session_status attach_status; |
7cdc2bab MD |
894 | struct lttng_viewer_attach_session_request rq; |
895 | struct lttng_viewer_attach_session_response rp; | |
0f1979c3 FD |
896 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
897 | session->lttng_live_msg_iter; | |
14f28187 | 898 | struct live_viewer_connection *viewer_connection = |
0f1979c3 | 899 | lttng_live_msg_iter->viewer_connection; |
1419db2b | 900 | bt_self_component *self_comp = viewer_connection->self_comp; |
7cdc2bab MD |
901 | uint64_t session_id = session->id; |
902 | uint32_t streams_count; | |
bdcbd52e JR |
903 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
904 | char cmd_buf[cmd_buf_len]; | |
0f1979c3 | 905 | ssize_t ret_len; |
7cdc2bab | 906 | |
7cdc2bab MD |
907 | cmd.cmd = htobe32(LTTNG_VIEWER_ATTACH_SESSION); |
908 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
909 | cmd.cmd_version = htobe32(0); | |
910 | ||
911 | memset(&rq, 0, sizeof(rq)); | |
912 | rq.session_id = htobe64(session_id); | |
913 | // TODO: add cmd line parameter to select seek beginning | |
914 | // rq.seek = htobe32(LTTNG_VIEWER_SEEK_BEGINNING); | |
915 | rq.seek = htobe32(LTTNG_VIEWER_SEEK_LAST); | |
916 | ||
bdcbd52e JR |
917 | /* |
918 | * Merge the cmd and connection request to prevent a write-write | |
919 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
920 | * second write to be performed quickly in presence of Nagle's algorithm. | |
921 | */ | |
922 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
923 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 924 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 925 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
926 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
927 | "Error sending attach request: %s", | |
928 | bt_socket_errormsg()); | |
7cdc2bab MD |
929 | goto error; |
930 | } | |
7cdc2bab | 931 | |
f6ccaed9 | 932 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 933 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 934 | if (ret_len == 0) { |
1419db2b FD |
935 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
936 | "Remote side has closed connection"); | |
7cdc2bab MD |
937 | goto error; |
938 | } | |
1cb3cdd7 | 939 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
940 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
941 | "Error receiving attach response: %s", | |
942 | bt_socket_errormsg()); | |
7cdc2bab MD |
943 | goto error; |
944 | } | |
f6ccaed9 | 945 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
946 | |
947 | streams_count = be32toh(rp.streams_count); | |
948 | switch(be32toh(rp.status)) { | |
949 | case LTTNG_VIEWER_ATTACH_OK: | |
950 | break; | |
951 | case LTTNG_VIEWER_ATTACH_UNK: | |
1419db2b FD |
952 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
953 | "Session id %" PRIu64 " is unknown", session_id); | |
7cdc2bab MD |
954 | goto error; |
955 | case LTTNG_VIEWER_ATTACH_ALREADY: | |
1419db2b FD |
956 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
957 | "There is already a viewer attached to this session"); | |
7cdc2bab MD |
958 | goto error; |
959 | case LTTNG_VIEWER_ATTACH_NOT_LIVE: | |
1419db2b | 960 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Not a live session"); |
7cdc2bab MD |
961 | goto error; |
962 | case LTTNG_VIEWER_ATTACH_SEEK_ERR: | |
1419db2b | 963 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Wrong seek parameter"); |
7cdc2bab MD |
964 | goto error; |
965 | default: | |
1419db2b FD |
966 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
967 | "Unknown attach return code %u", be32toh(rp.status)); | |
7cdc2bab MD |
968 | goto error; |
969 | } | |
970 | ||
971 | /* We receive the initial list of streams. */ | |
972 | if (receive_streams(session, streams_count)) { | |
1419db2b | 973 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Error receiving streams"); |
7cdc2bab MD |
974 | goto error; |
975 | } | |
976 | ||
977 | session->attached = true; | |
978 | session->new_streams_needed = false; | |
979 | ||
eee8e741 FD |
980 | attach_status = LTTNG_LIVE_ATTACH_SESSION_STATUS_OK; |
981 | goto end; | |
7cdc2bab MD |
982 | |
983 | error: | |
eee8e741 FD |
984 | attach_status = LTTNG_LIVE_ATTACH_SESSION_STATUS_ERROR; |
985 | ||
986 | end: | |
987 | return attach_status; | |
7cdc2bab MD |
988 | } |
989 | ||
990 | BT_HIDDEN | |
991 | int lttng_live_detach_session(struct lttng_live_session *session) | |
992 | { | |
993 | struct lttng_viewer_cmd cmd; | |
994 | struct lttng_viewer_detach_session_request rq; | |
995 | struct lttng_viewer_detach_session_response rp; | |
996 | ssize_t ret_len; | |
0f1979c3 FD |
997 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
998 | session->lttng_live_msg_iter; | |
14f28187 | 999 | struct live_viewer_connection *viewer_connection = |
0f1979c3 | 1000 | lttng_live_msg_iter->viewer_connection; |
7cdc2bab | 1001 | uint64_t session_id = session->id; |
bdcbd52e JR |
1002 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1003 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
1004 | |
1005 | if (!session->attached) { | |
1006 | return 0; | |
1007 | } | |
1008 | ||
1009 | cmd.cmd = htobe32(LTTNG_VIEWER_DETACH_SESSION); | |
1010 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1011 | cmd.cmd_version = htobe32(0); | |
1012 | ||
1013 | memset(&rq, 0, sizeof(rq)); | |
1014 | rq.session_id = htobe64(session_id); | |
1015 | ||
bdcbd52e JR |
1016 | /* |
1017 | * Merge the cmd and connection request to prevent a write-write | |
1018 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1019 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1020 | */ | |
1021 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1022 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1023 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1024 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1025 | BT_COMP_LOGE("Error sending detach request: %s", |
1026 | bt_socket_errormsg()); | |
7cdc2bab MD |
1027 | goto error; |
1028 | } | |
7cdc2bab | 1029 | |
f6ccaed9 | 1030 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1031 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1032 | if (ret_len == 0) { |
1419db2b | 1033 | BT_COMP_LOGE("Remote side has closed connection"); |
7cdc2bab MD |
1034 | goto error; |
1035 | } | |
1cb3cdd7 | 1036 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1037 | BT_COMP_LOGE("Error receiving detach response: %s", |
1038 | bt_socket_errormsg()); | |
7cdc2bab MD |
1039 | goto error; |
1040 | } | |
f6ccaed9 | 1041 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1042 | |
1043 | switch(be32toh(rp.status)) { | |
1044 | case LTTNG_VIEWER_DETACH_SESSION_OK: | |
1045 | break; | |
1046 | case LTTNG_VIEWER_DETACH_SESSION_UNK: | |
2ece7dd0 | 1047 | BT_COMP_LOGW("Session id %" PRIu64 " is unknown", session_id); |
7cdc2bab MD |
1048 | goto error; |
1049 | case LTTNG_VIEWER_DETACH_SESSION_ERR: | |
2ece7dd0 | 1050 | BT_COMP_LOGW("Error detaching session id %" PRIu64 "", session_id); |
7cdc2bab MD |
1051 | goto error; |
1052 | default: | |
2ece7dd0 | 1053 | BT_COMP_LOGE("Unknown detach return code %u", be32toh(rp.status)); |
7cdc2bab MD |
1054 | goto error; |
1055 | } | |
1056 | ||
1057 | session->attached = false; | |
1058 | ||
1059 | return 0; | |
1060 | ||
1061 | error: | |
1062 | return -1; | |
1063 | } | |
1064 | ||
1065 | BT_HIDDEN | |
c28512ab FD |
1066 | enum lttng_live_get_one_metadata_status lttng_live_get_one_metadata_packet( |
1067 | struct lttng_live_trace *trace, FILE *fp, size_t *reply_len) | |
7cdc2bab MD |
1068 | { |
1069 | uint64_t len = 0; | |
c28512ab | 1070 | enum lttng_live_get_one_metadata_status metadata_status; |
7cdc2bab MD |
1071 | struct lttng_viewer_cmd cmd; |
1072 | struct lttng_viewer_get_metadata rq; | |
1073 | struct lttng_viewer_metadata_packet rp; | |
1074 | char *data = NULL; | |
1075 | ssize_t ret_len; | |
1076 | struct lttng_live_session *session = trace->session; | |
0f1979c3 FD |
1077 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1078 | session->lttng_live_msg_iter; | |
7cdc2bab | 1079 | struct lttng_live_metadata *metadata = trace->metadata; |
14f28187 | 1080 | struct live_viewer_connection *viewer_connection = |
0f1979c3 | 1081 | lttng_live_msg_iter->viewer_connection; |
1419db2b | 1082 | bt_self_component *self_comp = viewer_connection->self_comp; |
bdcbd52e JR |
1083 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1084 | char cmd_buf[cmd_buf_len]; | |
7cdc2bab MD |
1085 | |
1086 | rq.stream_id = htobe64(metadata->stream_id); | |
1087 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_METADATA); | |
1088 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1089 | cmd.cmd_version = htobe32(0); | |
1090 | ||
bdcbd52e JR |
1091 | /* |
1092 | * Merge the cmd and connection request to prevent a write-write | |
1093 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1094 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1095 | */ | |
1096 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1097 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1098 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1099 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1100 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1101 | "Error sending get_metadata request: %s", | |
1102 | bt_socket_errormsg()); | |
7cdc2bab MD |
1103 | goto error; |
1104 | } | |
7cdc2bab | 1105 | |
f6ccaed9 | 1106 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1107 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1108 | if (ret_len == 0) { |
1419db2b FD |
1109 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1110 | "Remote side has closed connection"); | |
7cdc2bab MD |
1111 | goto error; |
1112 | } | |
1cb3cdd7 | 1113 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1114 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1115 | "Error receiving get_metadata response: %s", | |
1116 | bt_socket_errormsg()); | |
7cdc2bab MD |
1117 | goto error; |
1118 | } | |
f6ccaed9 | 1119 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1120 | |
1121 | switch (be32toh(rp.status)) { | |
1122 | case LTTNG_VIEWER_METADATA_OK: | |
1419db2b | 1123 | BT_COMP_LOGD("Received get_metadata response: ok"); |
7cdc2bab MD |
1124 | break; |
1125 | case LTTNG_VIEWER_NO_NEW_METADATA: | |
c28512ab FD |
1126 | BT_COMP_LOGD("Received get_metadata response: no new"); |
1127 | metadata_status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_END; | |
7cdc2bab MD |
1128 | goto end; |
1129 | case LTTNG_VIEWER_METADATA_ERR: | |
c28512ab FD |
1130 | /* |
1131 | * The Relayd cannot find this stream id. Maybe its | |
1132 | * gone already. This can happen in short lived UST app | |
1133 | * in a per-pid session. | |
1134 | */ | |
1135 | BT_COMP_LOGD("Received get_metadata response: error"); | |
1136 | metadata_status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_CLOSED; | |
1137 | goto end; | |
7cdc2bab | 1138 | default: |
1419db2b FD |
1139 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1140 | "Received get_metadata response: unknown"); | |
7cdc2bab MD |
1141 | goto error; |
1142 | } | |
1143 | ||
1144 | len = be64toh(rp.len); | |
2ece7dd0 | 1145 | BT_COMP_LOGD("Writing %" PRIu64" bytes to metadata", len); |
7cdc2bab | 1146 | if (len <= 0) { |
1419db2b FD |
1147 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1148 | "Erroneous response length"); | |
7cdc2bab MD |
1149 | goto error; |
1150 | } | |
1151 | ||
91d81473 | 1152 | data = calloc(1, len); |
7cdc2bab | 1153 | if (!data) { |
1419db2b FD |
1154 | BT_COMP_LOGE_APPEND_CAUSE_ERRNO(self_comp, |
1155 | "Failed to allocate data buffer", "."); | |
7cdc2bab MD |
1156 | goto error; |
1157 | } | |
4c66436f | 1158 | ret_len = lttng_live_recv(viewer_connection, data, len); |
7cdc2bab | 1159 | if (ret_len == 0) { |
2ece7dd0 | 1160 | BT_COMP_LOGI("Remote side has closed connection"); |
7cdc2bab MD |
1161 | goto error_free_data; |
1162 | } | |
1cb3cdd7 | 1163 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1164 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1165 | "Error receiving trace packet: %s", bt_socket_errormsg()); | |
7cdc2bab MD |
1166 | goto error_free_data; |
1167 | } | |
f6ccaed9 | 1168 | BT_ASSERT(ret_len == len); |
7cdc2bab MD |
1169 | |
1170 | do { | |
1171 | ret_len = fwrite(data, 1, len, fp); | |
1172 | } while (ret_len < 0 && errno == EINTR); | |
1173 | if (ret_len < 0) { | |
1419db2b FD |
1174 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1175 | "Writing in the metadata file stream"); | |
7cdc2bab MD |
1176 | goto error_free_data; |
1177 | } | |
f6ccaed9 | 1178 | BT_ASSERT(ret_len == len); |
7cdc2bab | 1179 | free(data); |
c28512ab FD |
1180 | *reply_len = len; |
1181 | metadata_status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_OK; | |
1182 | ||
1183 | goto end; | |
7cdc2bab MD |
1184 | |
1185 | error_free_data: | |
1186 | free(data); | |
1187 | error: | |
c28512ab FD |
1188 | metadata_status = LTTNG_LIVE_GET_ONE_METADATA_STATUS_ERROR; |
1189 | ||
1190 | end: | |
1191 | return metadata_status; | |
7cdc2bab MD |
1192 | } |
1193 | ||
1194 | /* | |
1195 | * Assign the fields from a lttng_viewer_index to a packet_index. | |
1196 | */ | |
1197 | static | |
1198 | void lttng_index_to_packet_index(struct lttng_viewer_index *lindex, | |
1199 | struct packet_index *pindex) | |
1200 | { | |
f6ccaed9 PP |
1201 | BT_ASSERT(lindex); |
1202 | BT_ASSERT(pindex); | |
7cdc2bab MD |
1203 | |
1204 | pindex->offset = be64toh(lindex->offset); | |
1205 | pindex->packet_size = be64toh(lindex->packet_size); | |
1206 | pindex->content_size = be64toh(lindex->content_size); | |
1207 | pindex->ts_cycles.timestamp_begin = be64toh(lindex->timestamp_begin); | |
1208 | pindex->ts_cycles.timestamp_end = be64toh(lindex->timestamp_end); | |
1209 | pindex->events_discarded = be64toh(lindex->events_discarded); | |
1210 | } | |
1211 | ||
1212 | BT_HIDDEN | |
14f28187 FD |
1213 | enum lttng_live_iterator_status lttng_live_get_next_index( |
1214 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
7cdc2bab MD |
1215 | struct lttng_live_stream_iterator *stream, |
1216 | struct packet_index *index) | |
1217 | { | |
1218 | struct lttng_viewer_cmd cmd; | |
1219 | struct lttng_viewer_get_next_index rq; | |
7cdc2bab | 1220 | struct lttng_viewer_index rp; |
0f1979c3 | 1221 | enum lttng_live_iterator_status retstatus = LTTNG_LIVE_ITERATOR_STATUS_OK; |
14f28187 | 1222 | struct live_viewer_connection *viewer_connection = |
1419db2b FD |
1223 | lttng_live_msg_iter->viewer_connection; |
1224 | bt_self_component *self_comp = viewer_connection->self_comp; | |
7cdc2bab | 1225 | struct lttng_live_trace *trace = stream->trace; |
bdcbd52e JR |
1226 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1227 | char cmd_buf[cmd_buf_len]; | |
0f1979c3 FD |
1228 | uint32_t flags, status; |
1229 | ssize_t ret_len; | |
7cdc2bab MD |
1230 | |
1231 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEXT_INDEX); | |
1232 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1233 | cmd.cmd_version = htobe32(0); | |
1234 | ||
bdcbd52e | 1235 | |
7cdc2bab MD |
1236 | memset(&rq, 0, sizeof(rq)); |
1237 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1238 | ||
bdcbd52e JR |
1239 | /* |
1240 | * Merge the cmd and connection request to prevent a write-write | |
1241 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1242 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1243 | */ | |
1244 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1245 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1246 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1247 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1248 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1249 | "Error sending get_next_index request: %s", | |
1250 | bt_socket_errormsg()); | |
7cdc2bab MD |
1251 | goto error; |
1252 | } | |
7cdc2bab | 1253 | |
f6ccaed9 | 1254 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1255 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1256 | if (ret_len == 0) { |
1419db2b FD |
1257 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1258 | "Remote side has closed connection"); | |
7cdc2bab MD |
1259 | goto error; |
1260 | } | |
1cb3cdd7 | 1261 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1262 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1263 | "Error receiving get_next_index response: %s", | |
1264 | bt_socket_errormsg()); | |
7cdc2bab MD |
1265 | goto error; |
1266 | } | |
f6ccaed9 | 1267 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1268 | |
1269 | flags = be32toh(rp.flags); | |
1270 | status = be32toh(rp.status); | |
1271 | ||
1272 | switch (status) { | |
1273 | case LTTNG_VIEWER_INDEX_INACTIVE: | |
1274 | { | |
1275 | uint64_t ctf_stream_class_id; | |
1276 | ||
1419db2b | 1277 | BT_COMP_LOGD("Received get_next_index response: inactive"); |
7cdc2bab MD |
1278 | memset(index, 0, sizeof(struct packet_index)); |
1279 | index->ts_cycles.timestamp_end = be64toh(rp.timestamp_end); | |
14f28187 | 1280 | stream->current_inactivity_ts = index->ts_cycles.timestamp_end; |
7cdc2bab MD |
1281 | ctf_stream_class_id = be64toh(rp.stream_id); |
1282 | if (stream->ctf_stream_class_id != -1ULL) { | |
f6ccaed9 | 1283 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1284 | ctf_stream_class_id); |
1285 | } else { | |
1286 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1287 | } | |
1288 | stream->state = LTTNG_LIVE_STREAM_QUIESCENT; | |
1289 | break; | |
1290 | } | |
1291 | case LTTNG_VIEWER_INDEX_OK: | |
1292 | { | |
1293 | uint64_t ctf_stream_class_id; | |
1294 | ||
1419db2b | 1295 | BT_COMP_LOGD("Received get_next_index response: OK"); |
7cdc2bab MD |
1296 | lttng_index_to_packet_index(&rp, index); |
1297 | ctf_stream_class_id = be64toh(rp.stream_id); | |
1298 | if (stream->ctf_stream_class_id != -1ULL) { | |
f6ccaed9 | 1299 | BT_ASSERT(stream->ctf_stream_class_id == |
7cdc2bab MD |
1300 | ctf_stream_class_id); |
1301 | } else { | |
1302 | stream->ctf_stream_class_id = ctf_stream_class_id; | |
1303 | } | |
1304 | ||
1305 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_DATA; | |
7cdc2bab MD |
1306 | |
1307 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
1419db2b | 1308 | BT_COMP_LOGD("Received get_next_index response: new metadata needed"); |
7cdc2bab MD |
1309 | trace->new_metadata_needed = true; |
1310 | } | |
1311 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
1419db2b | 1312 | BT_COMP_LOGD("Received get_next_index response: new streams needed"); |
14f28187 | 1313 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab MD |
1314 | } |
1315 | break; | |
1316 | } | |
1317 | case LTTNG_VIEWER_INDEX_RETRY: | |
1419db2b | 1318 | BT_COMP_LOGD("Received get_next_index response: retry"); |
7cdc2bab | 1319 | memset(index, 0, sizeof(struct packet_index)); |
14f28187 | 1320 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
7cdc2bab MD |
1321 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; |
1322 | goto end; | |
1323 | case LTTNG_VIEWER_INDEX_HUP: | |
1419db2b | 1324 | BT_COMP_LOGD("Received get_next_index response: stream hung up"); |
7cdc2bab MD |
1325 | memset(index, 0, sizeof(struct packet_index)); |
1326 | index->offset = EOF; | |
14f28187 | 1327 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab | 1328 | stream->state = LTTNG_LIVE_STREAM_EOF; |
4a39caef | 1329 | stream->has_stream_hung_up = true; |
7cdc2bab MD |
1330 | break; |
1331 | case LTTNG_VIEWER_INDEX_ERR: | |
1419db2b | 1332 | BT_COMP_LOGD("Received get_next_index response: error"); |
7cdc2bab MD |
1333 | memset(index, 0, sizeof(struct packet_index)); |
1334 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1335 | goto error; | |
1336 | default: | |
1419db2b | 1337 | BT_COMP_LOGD("Received get_next_index response: unknown value"); |
7cdc2bab MD |
1338 | memset(index, 0, sizeof(struct packet_index)); |
1339 | stream->state = LTTNG_LIVE_STREAM_ACTIVE_NO_DATA; | |
1340 | goto error; | |
1341 | } | |
1342 | end: | |
1343 | return retstatus; | |
1344 | ||
1345 | error: | |
9b4f9b42 | 1346 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
14f28187 | 1347 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1348 | } else { |
14f28187 | 1349 | retstatus = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
4c66436f | 1350 | } |
7cdc2bab MD |
1351 | return retstatus; |
1352 | } | |
1353 | ||
1354 | BT_HIDDEN | |
14f28187 FD |
1355 | enum bt_msg_iter_medium_status lttng_live_get_stream_bytes( |
1356 | struct lttng_live_msg_iter *lttng_live_msg_iter, | |
1357 | struct lttng_live_stream_iterator *stream, uint8_t *buf, | |
1358 | uint64_t offset, uint64_t req_len, uint64_t *recv_len) | |
7cdc2bab | 1359 | { |
d6e69534 | 1360 | enum bt_msg_iter_medium_status retstatus = BT_MSG_ITER_MEDIUM_STATUS_OK; |
0f1979c3 | 1361 | struct lttng_viewer_trace_packet rp; |
7cdc2bab MD |
1362 | struct lttng_viewer_cmd cmd; |
1363 | struct lttng_viewer_get_packet rq; | |
14f28187 | 1364 | struct live_viewer_connection *viewer_connection = |
1419db2b FD |
1365 | lttng_live_msg_iter->viewer_connection; |
1366 | bt_self_component *self_comp = viewer_connection->self_comp; | |
7cdc2bab | 1367 | struct lttng_live_trace *trace = stream->trace; |
bdcbd52e JR |
1368 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1369 | char cmd_buf[cmd_buf_len]; | |
0f1979c3 FD |
1370 | uint32_t flags, status; |
1371 | ssize_t ret_len; | |
7cdc2bab | 1372 | |
2ece7dd0 | 1373 | BT_COMP_LOGD("lttng_live_get_stream_bytes: offset=%" PRIu64 ", req_len=%" PRIu64, |
7cdc2bab MD |
1374 | offset, req_len); |
1375 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_PACKET); | |
1376 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1377 | cmd.cmd_version = htobe32(0); | |
1378 | ||
1379 | memset(&rq, 0, sizeof(rq)); | |
1380 | rq.stream_id = htobe64(stream->viewer_stream_id); | |
1381 | rq.offset = htobe64(offset); | |
1382 | rq.len = htobe32(req_len); | |
1383 | ||
bdcbd52e JR |
1384 | /* |
1385 | * Merge the cmd and connection request to prevent a write-write | |
1386 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1387 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1388 | */ | |
1389 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1390 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1391 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1392 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1393 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1394 | "Error sending get_data_packet request: %s", | |
1395 | bt_socket_errormsg()); | |
7cdc2bab MD |
1396 | goto error; |
1397 | } | |
7cdc2bab | 1398 | |
f6ccaed9 | 1399 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1400 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1401 | if (ret_len == 0) { |
1419db2b FD |
1402 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1403 | "Remote side has closed connection"); | |
7cdc2bab MD |
1404 | goto error; |
1405 | } | |
1cb3cdd7 | 1406 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1407 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1408 | "Socket error receiving get_data response: %s", | |
1409 | bt_socket_errormsg()); | |
7cdc2bab MD |
1410 | goto error; |
1411 | } | |
1412 | if (ret_len != sizeof(rp)) { | |
1419db2b FD |
1413 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "get_data_packet: " |
1414 | "expected %zu, received %zd", sizeof(rp), ret_len); | |
7cdc2bab MD |
1415 | goto error; |
1416 | } | |
1417 | ||
1418 | flags = be32toh(rp.flags); | |
1419 | status = be32toh(rp.status); | |
1420 | ||
1421 | switch (status) { | |
1422 | case LTTNG_VIEWER_GET_PACKET_OK: | |
1423 | req_len = be32toh(rp.len); | |
1419db2b FD |
1424 | BT_COMP_LOGD("Received get_data_packet response: Ok, " |
1425 | "packet size : %" PRIu64 "", req_len); | |
7cdc2bab MD |
1426 | break; |
1427 | case LTTNG_VIEWER_GET_PACKET_RETRY: | |
1428 | /* Unimplemented by relay daemon */ | |
1419db2b | 1429 | BT_COMP_LOGD("Received get_data_packet response: retry"); |
d6e69534 | 1430 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1431 | goto end; |
1432 | case LTTNG_VIEWER_GET_PACKET_ERR: | |
1433 | if (flags & LTTNG_VIEWER_FLAG_NEW_METADATA) { | |
2ece7dd0 | 1434 | BT_COMP_LOGD("get_data_packet: new metadata needed, try again later"); |
7cdc2bab MD |
1435 | trace->new_metadata_needed = true; |
1436 | } | |
1437 | if (flags & LTTNG_VIEWER_FLAG_NEW_STREAM) { | |
2ece7dd0 | 1438 | BT_COMP_LOGD("get_data_packet: new streams needed, try again later"); |
14f28187 | 1439 | lttng_live_need_new_streams(lttng_live_msg_iter); |
7cdc2bab MD |
1440 | } |
1441 | if (flags & (LTTNG_VIEWER_FLAG_NEW_METADATA | |
1442 | | LTTNG_VIEWER_FLAG_NEW_STREAM)) { | |
d6e69534 | 1443 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
7cdc2bab MD |
1444 | goto end; |
1445 | } | |
1419db2b FD |
1446 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1447 | "Received get_data_packet response: error"); | |
7cdc2bab MD |
1448 | goto error; |
1449 | case LTTNG_VIEWER_GET_PACKET_EOF: | |
d6e69534 | 1450 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_EOF; |
7cdc2bab MD |
1451 | goto end; |
1452 | default: | |
1419db2b FD |
1453 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1454 | "Received get_data_packet response: unknown"); | |
7cdc2bab MD |
1455 | goto error; |
1456 | } | |
1457 | ||
1458 | if (req_len == 0) { | |
1459 | goto error; | |
1460 | } | |
1461 | ||
4c66436f | 1462 | ret_len = lttng_live_recv(viewer_connection, buf, req_len); |
7cdc2bab | 1463 | if (ret_len == 0) { |
1419db2b FD |
1464 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1465 | "Remote side has closed connection"); | |
7cdc2bab MD |
1466 | goto error; |
1467 | } | |
1cb3cdd7 | 1468 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1469 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1470 | "Error receiving trace packet: %s", | |
1471 | bt_socket_errormsg()); | |
7cdc2bab MD |
1472 | goto error; |
1473 | } | |
f6ccaed9 | 1474 | BT_ASSERT(ret_len == req_len); |
7cdc2bab MD |
1475 | *recv_len = ret_len; |
1476 | end: | |
1477 | return retstatus; | |
1478 | ||
1479 | error: | |
9b4f9b42 | 1480 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
d6e69534 | 1481 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_AGAIN; |
4c66436f | 1482 | } else { |
d6e69534 | 1483 | retstatus = BT_MSG_ITER_MEDIUM_STATUS_ERROR; |
4c66436f | 1484 | } |
7cdc2bab MD |
1485 | return retstatus; |
1486 | } | |
1487 | ||
1488 | /* | |
1489 | * Request new streams for a session. | |
1490 | */ | |
1491 | BT_HIDDEN | |
14f28187 | 1492 | enum lttng_live_iterator_status lttng_live_get_new_streams( |
7cdc2bab MD |
1493 | struct lttng_live_session *session) |
1494 | { | |
14f28187 FD |
1495 | enum lttng_live_iterator_status status = |
1496 | LTTNG_LIVE_ITERATOR_STATUS_OK; | |
7cdc2bab MD |
1497 | struct lttng_viewer_cmd cmd; |
1498 | struct lttng_viewer_new_streams_request rq; | |
1499 | struct lttng_viewer_new_streams_response rp; | |
14f28187 FD |
1500 | struct lttng_live_msg_iter *lttng_live_msg_iter = |
1501 | session->lttng_live_msg_iter; | |
1502 | struct live_viewer_connection *viewer_connection = | |
1503 | lttng_live_msg_iter->viewer_connection; | |
1419db2b | 1504 | bt_self_component *self_comp = viewer_connection->self_comp; |
7cdc2bab | 1505 | uint32_t streams_count; |
bdcbd52e JR |
1506 | const size_t cmd_buf_len = sizeof(cmd) + sizeof(rq); |
1507 | char cmd_buf[cmd_buf_len]; | |
0f1979c3 | 1508 | ssize_t ret_len; |
7cdc2bab MD |
1509 | |
1510 | if (!session->new_streams_needed) { | |
14f28187 | 1511 | return LTTNG_LIVE_ITERATOR_STATUS_OK; |
7cdc2bab MD |
1512 | } |
1513 | ||
1514 | cmd.cmd = htobe32(LTTNG_VIEWER_GET_NEW_STREAMS); | |
1515 | cmd.data_size = htobe64((uint64_t) sizeof(rq)); | |
1516 | cmd.cmd_version = htobe32(0); | |
1517 | ||
1518 | memset(&rq, 0, sizeof(rq)); | |
1519 | rq.session_id = htobe64(session->id); | |
1520 | ||
bdcbd52e JR |
1521 | /* |
1522 | * Merge the cmd and connection request to prevent a write-write | |
1523 | * sequence on the TCP socket. Otherwise, a delayed ACK will prevent the | |
1524 | * second write to be performed quickly in presence of Nagle's algorithm. | |
1525 | */ | |
1526 | memcpy(cmd_buf, &cmd, sizeof(cmd)); | |
1527 | memcpy(cmd_buf + sizeof(cmd), &rq, sizeof(rq)); | |
bdcbd52e | 1528 | ret_len = lttng_live_send(viewer_connection, &cmd_buf, cmd_buf_len); |
1cb3cdd7 | 1529 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1530 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1531 | "Error sending get_new_streams request: %s", | |
1532 | bt_socket_errormsg()); | |
7cdc2bab MD |
1533 | goto error; |
1534 | } | |
7cdc2bab | 1535 | |
f6ccaed9 | 1536 | BT_ASSERT(ret_len == cmd_buf_len); |
4c66436f | 1537 | ret_len = lttng_live_recv(viewer_connection, &rp, sizeof(rp)); |
7cdc2bab | 1538 | if (ret_len == 0) { |
1419db2b FD |
1539 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1540 | "Remote side has closed connection"); | |
7cdc2bab MD |
1541 | goto error; |
1542 | } | |
1cb3cdd7 | 1543 | if (ret_len == BT_SOCKET_ERROR) { |
1419db2b FD |
1544 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1545 | "Error receiving get_new_streams response"); | |
7cdc2bab MD |
1546 | goto error; |
1547 | } | |
f6ccaed9 | 1548 | BT_ASSERT(ret_len == sizeof(rp)); |
7cdc2bab MD |
1549 | |
1550 | streams_count = be32toh(rp.streams_count); | |
1551 | ||
1552 | switch(be32toh(rp.status)) { | |
1553 | case LTTNG_VIEWER_NEW_STREAMS_OK: | |
1554 | session->new_streams_needed = false; | |
1555 | break; | |
1556 | case LTTNG_VIEWER_NEW_STREAMS_NO_NEW: | |
1557 | session->new_streams_needed = false; | |
1558 | goto end; | |
1559 | case LTTNG_VIEWER_NEW_STREAMS_HUP: | |
1560 | session->new_streams_needed = false; | |
1561 | session->closed = true; | |
14f28187 | 1562 | status = LTTNG_LIVE_ITERATOR_STATUS_END; |
7cdc2bab MD |
1563 | goto end; |
1564 | case LTTNG_VIEWER_NEW_STREAMS_ERR: | |
1419db2b | 1565 | BT_COMP_LOGD("Received get_new_streams response: error"); |
7cdc2bab MD |
1566 | goto error; |
1567 | default: | |
1419db2b FD |
1568 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, |
1569 | "Received get_new_streams response: Unknown:" | |
1570 | "return code %u", be32toh(rp.status)); | |
7cdc2bab MD |
1571 | goto error; |
1572 | } | |
1573 | ||
1574 | if (receive_streams(session, streams_count)) { | |
1419db2b | 1575 | BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Error receiving streams"); |
7cdc2bab MD |
1576 | goto error; |
1577 | } | |
1578 | end: | |
1579 | return status; | |
1580 | ||
1581 | error: | |
9b4f9b42 | 1582 | if (lttng_live_graph_is_canceled(lttng_live_msg_iter)) { |
14f28187 | 1583 | status = LTTNG_LIVE_ITERATOR_STATUS_AGAIN; |
4c66436f | 1584 | } else { |
14f28187 | 1585 | status = LTTNG_LIVE_ITERATOR_STATUS_ERROR; |
1419db2b | 1586 | BT_COMP_LOGE("Error receiving streams."); |
4c66436f | 1587 | } |
7cdc2bab MD |
1588 | return status; |
1589 | } | |
1590 | ||
1591 | BT_HIDDEN | |
14f28187 FD |
1592 | struct live_viewer_connection *live_viewer_connection_create( |
1593 | const char *url, bool in_query, | |
550004b4 | 1594 | struct lttng_live_msg_iter *lttng_live_msg_iter, |
1419db2b FD |
1595 | bt_self_component *self_comp, |
1596 | bt_self_component_class *self_comp_class, | |
550004b4 | 1597 | bt_logging_level log_level) |
7cdc2bab | 1598 | { |
14f28187 | 1599 | struct live_viewer_connection *viewer_connection; |
7cdc2bab | 1600 | |
14f28187 | 1601 | viewer_connection = g_new0(struct live_viewer_connection, 1); |
7cdc2bab | 1602 | |
550004b4 | 1603 | if (bt_socket_init(log_level) != 0) { |
1419db2b FD |
1604 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
1605 | self_comp_class, "Failed to init socket"); | |
1cb3cdd7 MJ |
1606 | goto error; |
1607 | } | |
1608 | ||
550004b4 PP |
1609 | viewer_connection->log_level = log_level; |
1610 | ||
1419db2b FD |
1611 | viewer_connection->self_comp = self_comp; |
1612 | viewer_connection->self_comp_class = self_comp_class; | |
550004b4 | 1613 | |
14f28187 | 1614 | bt_object_init_shared(&viewer_connection->obj, connection_release); |
1cb3cdd7 | 1615 | viewer_connection->control_sock = BT_INVALID_SOCKET; |
7cdc2bab | 1616 | viewer_connection->port = -1; |
14f28187 FD |
1617 | viewer_connection->in_query = in_query; |
1618 | viewer_connection->lttng_live_msg_iter = lttng_live_msg_iter; | |
7cdc2bab MD |
1619 | viewer_connection->url = g_string_new(url); |
1620 | if (!viewer_connection->url) { | |
1419db2b FD |
1621 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
1622 | self_comp_class, "Failed to allocate URL buffer"); | |
7cdc2bab MD |
1623 | goto error; |
1624 | } | |
1625 | ||
2ece7dd0 | 1626 | BT_COMP_LOGI("Establishing connection to url \"%s\"...", url); |
7cdc2bab | 1627 | if (lttng_live_connect_viewer(viewer_connection)) { |
1419db2b FD |
1628 | BT_COMP_OR_COMP_CLASS_LOGE_APPEND_CAUSE(self_comp, |
1629 | self_comp_class, "Failed to establish connection: " | |
1630 | "url=\"%s\"", url); | |
1631 | goto error; | |
7cdc2bab | 1632 | } |
2ece7dd0 | 1633 | BT_COMP_LOGI("Connection to url \"%s\" is established", url); |
7cdc2bab MD |
1634 | return viewer_connection; |
1635 | ||
7cdc2bab | 1636 | error: |
2f767475 PP |
1637 | if (viewer_connection) { |
1638 | live_viewer_connection_destroy(viewer_connection); | |
1639 | } | |
1640 | ||
7cdc2bab MD |
1641 | return NULL; |
1642 | } | |
1643 | ||
1644 | BT_HIDDEN | |
14f28187 FD |
1645 | void live_viewer_connection_destroy( |
1646 | struct live_viewer_connection *viewer_connection) | |
7cdc2bab | 1647 | { |
2ece7dd0 | 1648 | BT_COMP_LOGI("Closing connection to url \"%s\"", viewer_connection->url->str); |
7cdc2bab | 1649 | lttng_live_disconnect_viewer(viewer_connection); |
2f767475 PP |
1650 | if (viewer_connection->url) { |
1651 | g_string_free(viewer_connection->url, true); | |
1652 | } | |
94b828f3 | 1653 | if (viewer_connection->relay_hostname) { |
14f28187 | 1654 | g_string_free(viewer_connection->relay_hostname, true); |
94b828f3 MD |
1655 | } |
1656 | if (viewer_connection->target_hostname) { | |
14f28187 | 1657 | g_string_free(viewer_connection->target_hostname, true); |
94b828f3 MD |
1658 | } |
1659 | if (viewer_connection->session_name) { | |
14f28187 | 1660 | g_string_free(viewer_connection->session_name, true); |
94b828f3 | 1661 | } |
7cdc2bab | 1662 | g_free(viewer_connection); |
1cb3cdd7 MJ |
1663 | |
1664 | bt_socket_fini(); | |
7cdc2bab | 1665 | } |