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