| 1 | /* |
| 2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> |
| 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 _GNU_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 <time.h> |
| 26 | #include <unistd.h> |
| 27 | |
| 28 | #include "../command.h" |
| 29 | #include "../utils.h" |
| 30 | |
| 31 | #include <common/defaults.h> |
| 32 | #include <common/sessiond-comm/sessiond-comm.h> |
| 33 | #include <common/uri.h> |
| 34 | #include <common/utils.h> |
| 35 | |
| 36 | static char *opt_output_path; |
| 37 | static char *opt_session_name; |
| 38 | static char *opt_uris; |
| 39 | static char *opt_ctrl_uris; |
| 40 | static char *opt_data_uris; |
| 41 | static int opt_no_consumer = 1; |
| 42 | |
| 43 | enum { |
| 44 | OPT_HELP = 1, |
| 45 | OPT_LIST_OPTIONS, |
| 46 | }; |
| 47 | |
| 48 | static struct poptOption long_options[] = { |
| 49 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ |
| 50 | {"help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL}, |
| 51 | {"output", 'o', POPT_ARG_STRING, &opt_output_path, 0, NULL, NULL}, |
| 52 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
| 53 | {"set-uri", 'U', POPT_ARG_STRING, &opt_uris, 0, 0, 0}, |
| 54 | {"ctrl-uri", 'C', POPT_ARG_STRING, &opt_ctrl_uris, 0, 0, 0}, |
| 55 | {"data-uri", 'D', POPT_ARG_STRING, &opt_data_uris, 0, 0, 0}, |
| 56 | {"no-consumer", 0, POPT_ARG_NONE, &opt_no_consumer, 0, 0, 0}, |
| 57 | {0, 0, 0, 0, 0, 0, 0} |
| 58 | }; |
| 59 | |
| 60 | /* |
| 61 | * usage |
| 62 | */ |
| 63 | static void usage(FILE *ofp) |
| 64 | { |
| 65 | fprintf(ofp, "usage: lttng create [options] [NAME]\n"); |
| 66 | fprintf(ofp, "\n"); |
| 67 | fprintf(ofp, " The default NAME is 'auto-yyyymmdd-hhmmss'\n"); |
| 68 | fprintf(ofp, " -h, --help Show this help\n"); |
| 69 | fprintf(ofp, " --list-options Simple listing of options\n"); |
| 70 | fprintf(ofp, " -o, --output PATH Specify output path for traces\n"); |
| 71 | fprintf(ofp, " -U, --set-uri=URI Set URI for the enable-consumer destination.\n"); |
| 72 | fprintf(ofp, " It is persistent for the session lifetime.\n"); |
| 73 | fprintf(ofp, " Redo the command to change it.\n"); |
| 74 | fprintf(ofp, " This will set both data and control URI for network.\n"); |
| 75 | fprintf(ofp, " -C, --ctrl-uri=URI Set control path URI.\n"); |
| 76 | fprintf(ofp, " -D, --data-uri=URI Set data path URI.\n"); |
| 77 | fprintf(ofp, " --no-consumer Disable consumer for entire tracing session.\n"); |
| 78 | fprintf(ofp, "\n"); |
| 79 | } |
| 80 | |
| 81 | /* |
| 82 | * Parse URI from string to lttng_uri object array. |
| 83 | */ |
| 84 | static ssize_t parse_uri_from_str(const char *str_uri, struct lttng_uri **uris) |
| 85 | { |
| 86 | int i; |
| 87 | ssize_t size; |
| 88 | struct lttng_uri *uri; |
| 89 | |
| 90 | if (*uris != NULL) { |
| 91 | free(*uris); |
| 92 | } |
| 93 | |
| 94 | size = uri_parse(str_uri, uris); |
| 95 | if (size < 1) { |
| 96 | ERR("Bad URI %s. Either the hostname or IP is invalid", str_uri); |
| 97 | size = -1; |
| 98 | } |
| 99 | |
| 100 | for (i = 0; i < size; i++) { |
| 101 | uri = (struct lttng_uri *) &uris[i]; |
| 102 | /* Set default port if none was given */ |
| 103 | if (uri->port == 0) { |
| 104 | if (uri->stype == LTTNG_STREAM_CONTROL) { |
| 105 | uri->port = DEFAULT_NETWORK_CONTROL_PORT; |
| 106 | } else if (uri->stype == LTTNG_STREAM_DATA) { |
| 107 | uri->port = DEFAULT_NETWORK_DATA_PORT; |
| 108 | } |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | return size; |
| 113 | } |
| 114 | |
| 115 | /* |
| 116 | * Print URI message. |
| 117 | */ |
| 118 | static void print_uri_msg(struct lttng_uri *uri) |
| 119 | { |
| 120 | char *dst; |
| 121 | |
| 122 | switch (uri->dtype) { |
| 123 | case LTTNG_DST_IPV4: |
| 124 | dst = uri->dst.ipv4; |
| 125 | break; |
| 126 | case LTTNG_DST_IPV6: |
| 127 | dst = uri->dst.ipv6; |
| 128 | break; |
| 129 | case LTTNG_DST_PATH: |
| 130 | dst = uri->dst.path; |
| 131 | MSG("Consumer destination set to %s", dst); |
| 132 | goto end; |
| 133 | default: |
| 134 | DBG("Unknown URI destination"); |
| 135 | goto end; |
| 136 | } |
| 137 | |
| 138 | MSG("Consumer %s stream set to %s with the %s protocol on port %d", |
| 139 | uri->stype == LTTNG_STREAM_CONTROL ? "control" : "data", |
| 140 | dst, uri->proto == LTTNG_TCP ? "TCP" : "UNK", uri->port); |
| 141 | |
| 142 | end: |
| 143 | return; |
| 144 | } |
| 145 | |
| 146 | /* |
| 147 | * Create a tracing session. |
| 148 | * If no name is specified, a default name is generated. |
| 149 | * |
| 150 | * Returns one of the CMD_* result constants. |
| 151 | */ |
| 152 | static int create_session() |
| 153 | { |
| 154 | int ret, have_name = 0, i; |
| 155 | char datetime[16]; |
| 156 | char *session_name, *traces_path = NULL, *alloc_path = NULL; |
| 157 | time_t rawtime; |
| 158 | ssize_t size; |
| 159 | struct tm *timeinfo; |
| 160 | struct lttng_uri *uris = NULL, *ctrl_uri = NULL, *data_uri = NULL; |
| 161 | |
| 162 | /* Get date and time for automatic session name/path */ |
| 163 | time(&rawtime); |
| 164 | timeinfo = localtime(&rawtime); |
| 165 | strftime(datetime, sizeof(datetime), "%Y%m%d-%H%M%S", timeinfo); |
| 166 | |
| 167 | /* Auto session name creation */ |
| 168 | if (opt_session_name == NULL) { |
| 169 | ret = asprintf(&session_name, "auto-%s", datetime); |
| 170 | if (ret < 0) { |
| 171 | perror("asprintf session name"); |
| 172 | goto error; |
| 173 | } |
| 174 | DBG("Auto session name set to %s", session_name); |
| 175 | } else { |
| 176 | session_name = opt_session_name; |
| 177 | have_name = 1; |
| 178 | } |
| 179 | |
| 180 | if (opt_output_path != NULL) { |
| 181 | traces_path = utils_expand_path(opt_output_path); |
| 182 | if (traces_path == NULL) { |
| 183 | ret = CMD_ERROR; |
| 184 | goto error; |
| 185 | } |
| 186 | |
| 187 | ret = asprintf(&alloc_path, "file://%s", traces_path); |
| 188 | if (ret < 0) { |
| 189 | PERROR("asprintf expand path"); |
| 190 | ret = CMD_FATAL; |
| 191 | goto error; |
| 192 | } |
| 193 | |
| 194 | ret = uri_parse(alloc_path, &ctrl_uri); |
| 195 | if (ret < 1) { |
| 196 | ret = CMD_FATAL; |
| 197 | goto error; |
| 198 | } |
| 199 | } else if (opt_uris) { /* Handling URIs (-U opt) */ |
| 200 | size = parse_uri_from_str(opt_uris, &uris); |
| 201 | if (size < 1) { |
| 202 | ret = CMD_ERROR; |
| 203 | goto error; |
| 204 | } else if (size == 1 && uris[0].dtype != LTTNG_DST_PATH) { |
| 205 | ERR("Only net:// and file:// are supported. " |
| 206 | "Use -C and -D for more fine grained control"); |
| 207 | ret = CMD_ERROR; |
| 208 | goto error; |
| 209 | } else if (size == 2) { |
| 210 | uris[0].stype = LTTNG_STREAM_CONTROL; |
| 211 | uris[1].stype = LTTNG_STREAM_DATA; |
| 212 | |
| 213 | for (i = 0; i < size; i++) { |
| 214 | /* Set default port if none was given */ |
| 215 | if (uris[i].port == 0) { |
| 216 | if (uris[i].stype == LTTNG_STREAM_CONTROL) { |
| 217 | uris[i].port = DEFAULT_NETWORK_CONTROL_PORT; |
| 218 | } else { |
| 219 | uris[i].port = DEFAULT_NETWORK_DATA_PORT; |
| 220 | } |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | ctrl_uri = &uris[0]; |
| 225 | print_uri_msg(ctrl_uri); |
| 226 | data_uri = &uris[1]; |
| 227 | print_uri_msg(data_uri); |
| 228 | } else { |
| 229 | ctrl_uri = &uris[0]; |
| 230 | print_uri_msg(ctrl_uri); |
| 231 | } |
| 232 | } else if (opt_ctrl_uris || opt_data_uris) { |
| 233 | /* Setting up control URI (-C opt) */ |
| 234 | if (opt_ctrl_uris) { |
| 235 | size = parse_uri_from_str(opt_ctrl_uris, &uris); |
| 236 | if (size < 1) { |
| 237 | ret = CMD_ERROR; |
| 238 | goto error; |
| 239 | } |
| 240 | ctrl_uri = &uris[0]; |
| 241 | ctrl_uri->stype = LTTNG_STREAM_CONTROL; |
| 242 | /* Set default port if none specified */ |
| 243 | if (ctrl_uri->port == 0) { |
| 244 | ctrl_uri->port = DEFAULT_NETWORK_CONTROL_PORT; |
| 245 | } |
| 246 | print_uri_msg(ctrl_uri); |
| 247 | } |
| 248 | |
| 249 | /* Setting up data URI (-D opt) */ |
| 250 | if (opt_data_uris) { |
| 251 | size = parse_uri_from_str(opt_data_uris, &uris); |
| 252 | if (size < 1) { |
| 253 | ret = CMD_ERROR; |
| 254 | goto error; |
| 255 | } |
| 256 | data_uri = &uris[0]; |
| 257 | data_uri->stype = LTTNG_STREAM_DATA; |
| 258 | /* Set default port if none specified */ |
| 259 | if (data_uri->port == 0) { |
| 260 | data_uri->port = DEFAULT_NETWORK_DATA_PORT; |
| 261 | } |
| 262 | print_uri_msg(data_uri); |
| 263 | } |
| 264 | } else { |
| 265 | /* Auto output path */ |
| 266 | alloc_path = config_get_default_path(); |
| 267 | if (alloc_path == NULL) { |
| 268 | ERR("HOME path not found.\n \ |
| 269 | Please specify an output path using -o, --output PATH"); |
| 270 | ret = CMD_FATAL; |
| 271 | goto error; |
| 272 | } |
| 273 | alloc_path = strdup(alloc_path); |
| 274 | |
| 275 | if (have_name) { |
| 276 | ret = asprintf(&traces_path, "file://%s/" DEFAULT_TRACE_DIR_NAME |
| 277 | "/%s-%s", alloc_path, session_name, datetime); |
| 278 | } else { |
| 279 | ret = asprintf(&traces_path, "file://%s/" DEFAULT_TRACE_DIR_NAME |
| 280 | "/%s", alloc_path, session_name); |
| 281 | } |
| 282 | if (ret < 0) { |
| 283 | PERROR("asprintf trace dir name"); |
| 284 | ret = CMD_FATAL; |
| 285 | goto error; |
| 286 | } |
| 287 | |
| 288 | ret = uri_parse(traces_path, &ctrl_uri); |
| 289 | if (ret < 1) { |
| 290 | ret = CMD_FATAL; |
| 291 | goto error; |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | /* If there is no subdir specified and the URI are network */ |
| 296 | if (strlen(ctrl_uri->subdir) == 0) { |
| 297 | if (have_name) { |
| 298 | ret = snprintf(ctrl_uri->subdir, sizeof(ctrl_uri->subdir), "%s-%s", |
| 299 | session_name, datetime); |
| 300 | } else { |
| 301 | ret = snprintf(ctrl_uri->subdir, sizeof(ctrl_uri->subdir), "%s", |
| 302 | session_name); |
| 303 | } |
| 304 | if (ret < 0) { |
| 305 | PERROR("snprintf subdir"); |
| 306 | goto error; |
| 307 | } |
| 308 | DBG("Subdir update to %s", ctrl_uri->subdir); |
| 309 | } |
| 310 | |
| 311 | ret = lttng_create_session_uri(session_name, ctrl_uri, data_uri, |
| 312 | opt_no_consumer); |
| 313 | if (ret < 0) { |
| 314 | /* Don't set ret so lttng can interpret the sessiond error. */ |
| 315 | switch (-ret) { |
| 316 | case LTTCOMM_EXIST_SESS: |
| 317 | WARN("Session %s already exists", session_name); |
| 318 | break; |
| 319 | } |
| 320 | goto error; |
| 321 | } |
| 322 | |
| 323 | /* Init lttng session config */ |
| 324 | ret = config_init(session_name); |
| 325 | if (ret < 0) { |
| 326 | ret = CMD_ERROR; |
| 327 | goto error; |
| 328 | } |
| 329 | |
| 330 | MSG("Session %s created.", session_name); |
| 331 | if (ctrl_uri->dtype == LTTNG_DST_PATH) { |
| 332 | MSG("Traces will be written in %s" , ctrl_uri->dst.path); |
| 333 | } |
| 334 | |
| 335 | ret = CMD_SUCCESS; |
| 336 | |
| 337 | error: |
| 338 | if (opt_session_name == NULL) { |
| 339 | free(session_name); |
| 340 | } |
| 341 | |
| 342 | if (alloc_path) { |
| 343 | free(alloc_path); |
| 344 | } |
| 345 | |
| 346 | if (traces_path) { |
| 347 | free(traces_path); |
| 348 | } |
| 349 | return ret; |
| 350 | } |
| 351 | |
| 352 | /* |
| 353 | * The 'create <options>' first level command |
| 354 | * |
| 355 | * Returns one of the CMD_* result constants. |
| 356 | */ |
| 357 | int cmd_create(int argc, const char **argv) |
| 358 | { |
| 359 | int opt, ret = CMD_SUCCESS; |
| 360 | static poptContext pc; |
| 361 | |
| 362 | pc = poptGetContext(NULL, argc, argv, long_options, 0); |
| 363 | poptReadDefaultConfig(pc, 0); |
| 364 | |
| 365 | while ((opt = poptGetNextOpt(pc)) != -1) { |
| 366 | switch (opt) { |
| 367 | case OPT_HELP: |
| 368 | usage(stdout); |
| 369 | goto end; |
| 370 | case OPT_LIST_OPTIONS: |
| 371 | list_cmd_options(stdout, long_options); |
| 372 | goto end; |
| 373 | default: |
| 374 | usage(stderr); |
| 375 | ret = CMD_UNDEFINED; |
| 376 | goto end; |
| 377 | } |
| 378 | } |
| 379 | |
| 380 | opt_session_name = (char*) poptGetArg(pc); |
| 381 | |
| 382 | ret = create_session(); |
| 383 | |
| 384 | end: |
| 385 | poptFreeContext(pc); |
| 386 | return ret; |
| 387 | } |