Commit | Line | Data |
---|---|---|
d68c9a04 | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2017 Julien Desfossez <jdesfossez@efficios.com> |
d68c9a04 | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: GPL-2.0-only |
d68c9a04 | 5 | * |
d68c9a04 JD |
6 | */ |
7 | ||
8 | #define _LGPL_SOURCE | |
9 | #include <popt.h> | |
10 | #include <stdio.h> | |
11 | #include <stdlib.h> | |
12 | #include <string.h> | |
13 | #include <sys/stat.h> | |
14 | #include <sys/types.h> | |
15 | #include <unistd.h> | |
16 | #include <inttypes.h> | |
17 | #include <ctype.h> | |
d68c9a04 | 18 | |
c9e313bc SM |
19 | #include <common/sessiond-comm/sessiond-comm.hpp> |
20 | #include <common/mi-lttng.hpp> | |
d68c9a04 | 21 | |
c9e313bc | 22 | #include "../command.hpp" |
050dd639 | 23 | #include <lttng/lttng.h> |
d68c9a04 | 24 | |
d68c9a04 JD |
25 | static int opt_no_wait; |
26 | static struct mi_writer *writer; | |
27 | ||
3ae5c539 JD |
28 | #ifdef LTTNG_EMBED_HELP |
29 | static const char help_msg[] = | |
30 | #include <lttng-rotate.1.h> | |
31 | ; | |
32 | #endif | |
33 | ||
d68c9a04 JD |
34 | enum { |
35 | OPT_HELP = 1, | |
36 | OPT_LIST_OPTIONS, | |
37 | }; | |
38 | ||
39 | static struct poptOption long_options[] = { | |
40 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
41 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
42 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, | |
43 | {"no-wait", 'n', POPT_ARG_VAL, &opt_no_wait, 1, 0, 0}, | |
44 | {0, 0, 0, 0, 0, 0, 0} | |
45 | }; | |
46 | ||
d68c9a04 JD |
47 | static int rotate_tracing(char *session_name) |
48 | { | |
49 | int ret; | |
91c4d516 | 50 | enum cmd_error_code cmd_ret = CMD_SUCCESS; |
d68c9a04 JD |
51 | struct lttng_rotation_handle *handle = NULL; |
52 | enum lttng_rotation_status rotation_status; | |
53 | enum lttng_rotation_state rotation_state = LTTNG_ROTATION_STATE_ONGOING; | |
91c4d516 JG |
54 | const struct lttng_trace_archive_location *location = NULL; |
55 | bool print_location = true; | |
d68c9a04 JD |
56 | |
57 | DBG("Rotating the output files of session %s", session_name); | |
58 | ||
dbd512ea | 59 | ret = lttng_rotate_session(session_name, NULL, &handle); |
d68c9a04 JD |
60 | if (ret < 0) { |
61 | switch (-ret) { | |
62 | case LTTNG_ERR_SESSION_NOT_STARTED: | |
63 | WARN("Tracing session %s not started yet", session_name); | |
91c4d516 JG |
64 | cmd_ret = CMD_WARNING; |
65 | goto end; | |
d68c9a04 JD |
66 | default: |
67 | ERR("%s", lttng_strerror(ret)); | |
91c4d516 | 68 | goto error; |
d68c9a04 | 69 | } |
91c4d516 JG |
70 | } |
71 | ||
72 | if (opt_no_wait) { | |
73 | rotation_state = LTTNG_ROTATION_STATE_ONGOING; | |
74 | goto skip_wait; | |
75 | } | |
76 | ||
77 | _MSG("Waiting for rotation to complete"); | |
78 | ret = fflush(stdout); | |
79 | if (ret) { | |
80 | PERROR("fflush"); | |
d68c9a04 JD |
81 | goto error; |
82 | } | |
83 | ||
91c4d516 JG |
84 | do { |
85 | rotation_status = lttng_rotation_handle_get_state(handle, | |
86 | &rotation_state); | |
87 | if (rotation_status != LTTNG_ROTATION_STATUS_OK) { | |
d2956687 | 88 | MSG(""); |
91c4d516 | 89 | ERR("Failed to query the state of the rotation."); |
d68c9a04 JD |
90 | goto error; |
91 | } | |
92 | ||
91c4d516 | 93 | if (rotation_state == LTTNG_ROTATION_STATE_ONGOING) { |
c8f61fd4 | 94 | ret = usleep(DEFAULT_DATA_AVAILABILITY_WAIT_TIME_US); |
91c4d516 | 95 | if (ret) { |
d2956687 | 96 | PERROR("\nusleep"); |
d68c9a04 JD |
97 | goto error; |
98 | } | |
91c4d516 | 99 | _MSG("."); |
d68c9a04 | 100 | |
91c4d516 JG |
101 | ret = fflush(stdout); |
102 | if (ret) { | |
d2956687 | 103 | PERROR("\nfflush"); |
91c4d516 | 104 | goto error; |
d68c9a04 | 105 | } |
91c4d516 JG |
106 | } |
107 | } while (rotation_state == LTTNG_ROTATION_STATE_ONGOING); | |
108 | MSG(""); | |
d68c9a04 | 109 | |
91c4d516 | 110 | skip_wait: |
d68c9a04 JD |
111 | switch (rotation_state) { |
112 | case LTTNG_ROTATION_STATE_COMPLETED: | |
dd73d57b JG |
113 | rotation_status = lttng_rotation_handle_get_archive_location( |
114 | handle, &location); | |
d68c9a04 | 115 | if (rotation_status != LTTNG_ROTATION_STATUS_OK) { |
91c4d516 JG |
116 | ERR("Failed to retrieve the rotation's completed chunk archive location."); |
117 | cmd_ret = CMD_ERROR; | |
d68c9a04 | 118 | } |
91c4d516 | 119 | break; |
d68c9a04 | 120 | case LTTNG_ROTATION_STATE_EXPIRED: |
91c4d516 JG |
121 | break; |
122 | case LTTNG_ROTATION_STATE_ERROR: | |
123 | ERR("Failed to retrieve rotation state."); | |
91c4d516 JG |
124 | goto error; |
125 | case LTTNG_ROTATION_STATE_ONGOING: | |
126 | MSG("Rotation ongoing for session %s", session_name); | |
127 | print_location = false; | |
128 | break; | |
d68c9a04 | 129 | default: |
91c4d516 | 130 | ERR("Unexpected rotation state encountered."); |
d68c9a04 JD |
131 | goto error; |
132 | } | |
133 | ||
91c4d516 | 134 | if (!lttng_opt_mi && print_location) { |
bbbfd849 | 135 | ret = print_trace_archive_location(location, |
91c4d516 JG |
136 | session_name); |
137 | } else if (lttng_opt_mi) { | |
138 | ret = mi_lttng_rotate(writer, session_name, rotation_state, | |
139 | location); | |
140 | } | |
141 | ||
142 | if (ret < 0) { | |
143 | cmd_ret = CMD_ERROR; | |
144 | } | |
145 | ||
d68c9a04 JD |
146 | end: |
147 | lttng_rotation_handle_destroy(handle); | |
91c4d516 JG |
148 | return cmd_ret; |
149 | error: | |
150 | cmd_ret = CMD_ERROR; | |
151 | goto end; | |
d68c9a04 JD |
152 | } |
153 | ||
154 | /* | |
155 | * cmd_rotate | |
156 | * | |
157 | * The 'rotate <options>' first level command | |
158 | */ | |
159 | int cmd_rotate(int argc, const char **argv) | |
160 | { | |
91c4d516 JG |
161 | int opt, ret; |
162 | enum cmd_error_code cmd_ret = CMD_SUCCESS; | |
d68c9a04 JD |
163 | int popt_ret; |
164 | static poptContext pc; | |
5b915816 | 165 | const char *arg_session_name = NULL; |
d68c9a04 | 166 | char *session_name = NULL; |
d68c9a04 JD |
167 | |
168 | pc = poptGetContext(NULL, argc, argv, long_options, 0); | |
169 | popt_ret = poptReadDefaultConfig(pc, 0); | |
170 | if (popt_ret) { | |
d68c9a04 | 171 | ERR("poptReadDefaultConfig"); |
5b915816 MJ |
172 | cmd_ret = CMD_ERROR; |
173 | goto end; | |
d68c9a04 JD |
174 | } |
175 | ||
176 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
177 | switch (opt) { | |
178 | case OPT_HELP: | |
179 | SHOW_HELP(); | |
180 | goto end; | |
181 | case OPT_LIST_OPTIONS: | |
182 | list_cmd_options(stdout, long_options); | |
183 | goto end; | |
184 | default: | |
91c4d516 | 185 | cmd_ret = CMD_UNDEFINED; |
d68c9a04 JD |
186 | goto end; |
187 | } | |
188 | } | |
189 | ||
5b915816 MJ |
190 | arg_session_name = poptGetArg(pc); |
191 | if (arg_session_name == NULL) { | |
d68c9a04 | 192 | session_name = get_session_name(); |
d68c9a04 | 193 | } else { |
5b915816 MJ |
194 | session_name = strdup(arg_session_name); |
195 | if (session_name == NULL) { | |
196 | PERROR("Failed to copy session name"); | |
197 | } | |
198 | } | |
199 | ||
200 | if (session_name == NULL) { | |
201 | cmd_ret = CMD_ERROR; | |
202 | goto end; | |
d68c9a04 JD |
203 | } |
204 | ||
205 | /* Mi check */ | |
206 | if (lttng_opt_mi) { | |
207 | writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi); | |
208 | if (!writer) { | |
5b915816 MJ |
209 | cmd_ret = CMD_ERROR; |
210 | goto end; | |
d68c9a04 JD |
211 | } |
212 | ||
213 | /* Open rotate command */ | |
214 | ret = mi_lttng_writer_command_open(writer, | |
215 | mi_lttng_element_command_rotate); | |
216 | if (ret) { | |
5b915816 MJ |
217 | cmd_ret = CMD_ERROR; |
218 | goto end; | |
d68c9a04 JD |
219 | } |
220 | ||
221 | /* Open output element */ | |
222 | ret = mi_lttng_writer_open_element(writer, | |
223 | mi_lttng_element_command_output); | |
224 | if (ret) { | |
5b915816 MJ |
225 | cmd_ret = CMD_ERROR; |
226 | goto end; | |
d68c9a04 | 227 | } |
d68c9a04 JD |
228 | } |
229 | ||
48a40005 | 230 | cmd_ret = (cmd_error_code) rotate_tracing(session_name); |
d68c9a04 JD |
231 | |
232 | /* Mi closing */ | |
233 | if (lttng_opt_mi) { | |
66ea93b1 | 234 | /* Close output element */ |
d68c9a04 JD |
235 | ret = mi_lttng_writer_close_element(writer); |
236 | if (ret) { | |
5b915816 MJ |
237 | cmd_ret = CMD_ERROR; |
238 | goto end; | |
d68c9a04 JD |
239 | } |
240 | /* Success ? */ | |
241 | ret = mi_lttng_writer_write_element_bool(writer, | |
91c4d516 JG |
242 | mi_lttng_element_command_success, |
243 | cmd_ret == CMD_SUCCESS); | |
d68c9a04 | 244 | if (ret) { |
5b915816 MJ |
245 | cmd_ret = CMD_ERROR; |
246 | goto end; | |
d68c9a04 JD |
247 | } |
248 | ||
249 | /* Command element close */ | |
250 | ret = mi_lttng_writer_command_close(writer); | |
251 | if (ret) { | |
5b915816 MJ |
252 | cmd_ret = CMD_ERROR; |
253 | goto end; | |
d68c9a04 JD |
254 | } |
255 | } | |
256 | ||
d68c9a04 JD |
257 | /* Mi clean-up */ |
258 | if (writer && mi_lttng_writer_destroy(writer)) { | |
5b915816 MJ |
259 | cmd_ret = CMD_ERROR; |
260 | goto end; | |
d68c9a04 | 261 | } |
91c4d516 | 262 | end: |
5b915816 | 263 | free(session_name); |
d68c9a04 | 264 | poptFreeContext(pc); |
91c4d516 JG |
265 | |
266 | return cmd_ret; | |
d68c9a04 | 267 | } |