Fix tests: link libpause_consumer on liblttng-ctl
[lttng-tools.git] / src / bin / lttng / commands / rotate.c
1 /*
2 * Copyright (C) 2017 - Julien Desfossez <jdesfossez@efficios.com>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License, version 2 only,
6 * as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
16 */
17
18 #define _LGPL_SOURCE
19 #include <popt.h>
20 #include <stdio.h>
21 #include <stdlib.h>
22 #include <string.h>
23 #include <sys/stat.h>
24 #include <sys/types.h>
25 #include <unistd.h>
26 #include <inttypes.h>
27 #include <ctype.h>
28 #include <assert.h>
29
30 #include <common/sessiond-comm/sessiond-comm.h>
31 #include <common/mi-lttng.h>
32
33 #include "../command.h"
34 #include <lttng/rotation.h>
35 #include <lttng/location.h>
36
37 static char *opt_session_name;
38 static int opt_no_wait;
39 static struct mi_writer *writer;
40
41 #ifdef LTTNG_EMBED_HELP
42 static const char help_msg[] =
43 #include <lttng-rotate.1.h>
44 ;
45 #endif
46
47 enum {
48 OPT_HELP = 1,
49 OPT_LIST_OPTIONS,
50 };
51
52 static struct poptOption long_options[] = {
53 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
54 {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
55 {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
56 {"no-wait", 'n', POPT_ARG_VAL, &opt_no_wait, 1, 0, 0},
57 {0, 0, 0, 0, 0, 0, 0}
58 };
59
60 static int output_trace_archive_location(
61 const struct lttng_trace_archive_location *location,
62 const char *session_name)
63 {
64 int ret = 0;
65 enum lttng_trace_archive_location_type location_type;
66 enum lttng_trace_archive_location_status status;
67 bool printed_location = false;
68
69 location_type = lttng_trace_archive_location_get_type(location);
70
71 _MSG("Trace chunk archive for session %s is now readable",
72 session_name);
73 switch (location_type) {
74 case LTTNG_TRACE_ARCHIVE_LOCATION_TYPE_LOCAL:
75 {
76 const char *absolute_path;
77
78 status = lttng_trace_archive_location_local_get_absolute_path(
79 location, &absolute_path);
80 if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) {
81 ret = -1;
82 goto end;
83 }
84 MSG(" at %s", absolute_path);
85 printed_location = true;
86 break;
87 }
88 case LTTNG_TRACE_ARCHIVE_LOCATION_TYPE_RELAY:
89 {
90 uint16_t control_port, data_port;
91 const char *host, *relative_path, *protocol_str;
92 enum lttng_trace_archive_location_relay_protocol_type protocol;
93
94 /* Fetch all relay location parameters. */
95 status = lttng_trace_archive_location_relay_get_protocol_type(
96 location, &protocol);
97 if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) {
98 ret = -1;
99 goto end;
100 }
101
102 status = lttng_trace_archive_location_relay_get_host(
103 location, &host);
104 if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) {
105 ret = -1;
106 goto end;
107 }
108
109 status = lttng_trace_archive_location_relay_get_control_port(
110 location, &control_port);
111 if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) {
112 ret = -1;
113 goto end;
114 }
115
116 status = lttng_trace_archive_location_relay_get_data_port(
117 location, &data_port);
118 if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) {
119 ret = -1;
120 goto end;
121 }
122
123 status = lttng_trace_archive_location_relay_get_relative_path(
124 location, &relative_path);
125 if (status != LTTNG_TRACE_ARCHIVE_LOCATION_STATUS_OK) {
126 ret = -1;
127 goto end;
128 }
129
130 switch (protocol) {
131 case LTTNG_TRACE_ARCHIVE_LOCATION_RELAY_PROTOCOL_TYPE_TCP:
132 protocol_str = "tcp";
133 break;
134 default:
135 protocol_str = "unknown";
136 break;
137 }
138
139 MSG(" on relay %s://%s/%s [control port %" PRIu16 ", data port %"
140 PRIu16 "]", protocol_str, host,
141 relative_path, control_port, data_port);
142 printed_location = true;
143 break;
144 }
145 default:
146 break;
147 }
148 end:
149 if (!printed_location) {
150 MSG(" at an unknown location");
151 }
152 return ret;
153 }
154
155 static int rotate_tracing(char *session_name)
156 {
157 int ret;
158 enum cmd_error_code cmd_ret = CMD_SUCCESS;
159 struct lttng_rotation_handle *handle = NULL;
160 enum lttng_rotation_status rotation_status;
161 enum lttng_rotation_state rotation_state = LTTNG_ROTATION_STATE_ONGOING;
162 const struct lttng_trace_archive_location *location = NULL;
163 bool print_location = true;
164
165 DBG("Rotating the output files of session %s", session_name);
166
167 ret = lttng_rotate_session(session_name, NULL, &handle);
168 if (ret < 0) {
169 switch (-ret) {
170 case LTTNG_ERR_SESSION_NOT_STARTED:
171 WARN("Tracing session %s not started yet", session_name);
172 cmd_ret = CMD_WARNING;
173 goto end;
174 default:
175 ERR("%s", lttng_strerror(ret));
176 goto error;
177 }
178 }
179
180 if (opt_no_wait) {
181 rotation_state = LTTNG_ROTATION_STATE_ONGOING;
182 goto skip_wait;
183 }
184
185 _MSG("Waiting for rotation to complete");
186 ret = fflush(stdout);
187 if (ret) {
188 PERROR("fflush");
189 goto error;
190 }
191
192 do {
193 rotation_status = lttng_rotation_handle_get_state(handle,
194 &rotation_state);
195 if (rotation_status != LTTNG_ROTATION_STATUS_OK) {
196 ERR("Failed to query the state of the rotation.");
197 goto error;
198 }
199
200 if (rotation_state == LTTNG_ROTATION_STATE_ONGOING) {
201 ret = usleep(DEFAULT_DATA_AVAILABILITY_WAIT_TIME);
202 if (ret) {
203 PERROR("usleep");
204 goto error;
205 }
206 _MSG(".");
207
208 ret = fflush(stdout);
209 if (ret) {
210 PERROR("fflush");
211 goto error;
212 }
213 }
214 } while (rotation_state == LTTNG_ROTATION_STATE_ONGOING);
215 MSG("");
216
217 skip_wait:
218 switch (rotation_state) {
219 case LTTNG_ROTATION_STATE_COMPLETED:
220 rotation_status = lttng_rotation_handle_get_archive_location(
221 handle, &location);
222 if (rotation_status != LTTNG_ROTATION_STATUS_OK) {
223 ERR("Failed to retrieve the rotation's completed chunk archive location.");
224 cmd_ret = CMD_ERROR;
225 }
226 break;
227 case LTTNG_ROTATION_STATE_EXPIRED:
228 break;
229 case LTTNG_ROTATION_STATE_ERROR:
230 ERR("Failed to retrieve rotation state.");
231 goto error;
232 case LTTNG_ROTATION_STATE_ONGOING:
233 MSG("Rotation ongoing for session %s", session_name);
234 print_location = false;
235 break;
236 default:
237 ERR("Unexpected rotation state encountered.");
238 goto error;
239 }
240
241 if (!lttng_opt_mi && print_location) {
242 ret = output_trace_archive_location(location,
243 session_name);
244 } else if (lttng_opt_mi) {
245 ret = mi_lttng_rotate(writer, session_name, rotation_state,
246 location);
247 }
248
249 if (ret < 0) {
250 cmd_ret = CMD_ERROR;
251 }
252
253 end:
254 lttng_rotation_handle_destroy(handle);
255 return cmd_ret;
256 error:
257 cmd_ret = CMD_ERROR;
258 goto end;
259 }
260
261 /*
262 * cmd_rotate
263 *
264 * The 'rotate <options>' first level command
265 */
266 int cmd_rotate(int argc, const char **argv)
267 {
268 int opt, ret;
269 enum cmd_error_code cmd_ret = CMD_SUCCESS;
270 int popt_ret;
271 static poptContext pc;
272 char *session_name = NULL;
273 bool free_session_name = false;
274
275 pc = poptGetContext(NULL, argc, argv, long_options, 0);
276 popt_ret = poptReadDefaultConfig(pc, 0);
277 if (popt_ret) {
278 ERR("poptReadDefaultConfig");
279 goto error;
280 }
281
282 while ((opt = poptGetNextOpt(pc)) != -1) {
283 switch (opt) {
284 case OPT_HELP:
285 SHOW_HELP();
286 goto end;
287 case OPT_LIST_OPTIONS:
288 list_cmd_options(stdout, long_options);
289 goto end;
290 default:
291 cmd_ret = CMD_UNDEFINED;
292 goto end;
293 }
294 }
295
296 opt_session_name = (char*) poptGetArg(pc);
297
298 if (!opt_session_name) {
299 session_name = get_session_name();
300 if (!session_name) {
301 goto error;
302 }
303 free_session_name = true;
304 } else {
305 session_name = opt_session_name;
306 }
307
308 /* Mi check */
309 if (lttng_opt_mi) {
310 writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
311 if (!writer) {
312 goto error;
313 }
314
315 /* Open rotate command */
316 ret = mi_lttng_writer_command_open(writer,
317 mi_lttng_element_command_rotate);
318 if (ret) {
319 goto error;
320 }
321
322 /* Open output element */
323 ret = mi_lttng_writer_open_element(writer,
324 mi_lttng_element_command_output);
325 if (ret) {
326 goto error;
327 }
328 }
329
330 cmd_ret = rotate_tracing(session_name);
331
332 /* Mi closing */
333 if (lttng_opt_mi) {
334 /* Close output element */
335 ret = mi_lttng_writer_close_element(writer);
336 if (ret) {
337 goto error;
338 }
339 /* Success ? */
340 ret = mi_lttng_writer_write_element_bool(writer,
341 mi_lttng_element_command_success,
342 cmd_ret == CMD_SUCCESS);
343 if (ret) {
344 goto error;
345 }
346
347 /* Command element close */
348 ret = mi_lttng_writer_command_close(writer);
349 if (ret) {
350 goto error;
351 }
352 }
353
354 /* Mi clean-up */
355 if (writer && mi_lttng_writer_destroy(writer)) {
356 goto error;
357 }
358 end:
359 poptFreeContext(pc);
360 if (free_session_name) {
361 free(session_name);
362 }
363
364 return cmd_ret;
365 error:
366 cmd_ret = CMD_ERROR;
367 goto end;
368 }
This page took 0.053735 seconds and 4 git commands to generate.