converter/babeltrace-log.c

   1 /*
   2  * babeltrace-log.c
   3  *
   4  * BabelTrace - Convert Text Log to CTF
   5  *
   6  * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
   7  *
   8  * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   9  *
  10  * Permission is hereby granted, free of charge, to any person obtaining a copy
  11  * of this software and associated documentation files (the "Software"), to deal
  12  * in the Software without restriction, including without limitation the rights
  13  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  14  * copies of the Software, and to permit persons to whom the Software is
  15  * furnished to do so, subject to the following conditions:
  16  *
  17  * The above copyright notice and this permission notice shall be included in
  18  * all copies or substantial portions of the Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  23  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  24  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  25  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  26  * SOFTWARE.
  27  *
  28  * Depends on glibc 2.10 for getline().
  29  */
  30
  31 #define _GNU_SOURCE
  32 #include <config.h>
  33 #include <sys/types.h>
  34 #include <sys/stat.h>
  35 #include <fcntl.h>
  36 #include <sys/mman.h>
  37 #include <dirent.h>
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40 #include <stdint.h>
  41 #include <unistd.h>
  42 #include <errno.h>
  43 #include <string.h>
  44 #include <inttypes.h>
  45
  46 #include <babeltrace/babeltrace-internal.h>
  47 #include <babeltrace/ctf/types.h>
  48 #include <babeltrace/compat/uuid.h>
  49 #include <babeltrace/compat/utc.h>
  50 #include <babeltrace/endian.h>
  51
  52 #define NSEC_PER_USEC 1000UL
  53 #define NSEC_PER_MSEC 1000000UL
  54 #define NSEC_PER_SEC 1000000000ULL
  55 #define USEC_PER_SEC 1000000UL
  56
  57 int babeltrace_debug, babeltrace_verbose;
  58
  59 static char *s_outputname;
  60 static int s_timestamp;
  61 static int s_help;
  62 static unsigned char s_uuid[BABELTRACE_UUID_LEN];
  63
  64 /* Metadata format string */
  65 static const char metadata_fmt[] =
  66 "/* CTF 1.8 */\n"
  67 "typealias integer { size = 8; align = 8; signed = false; } := uint8_t;\n"
  68 "typealias integer { size = 32; align = 32; signed = false; } := uint32_t;\n"
  69 "typealias integer { size = 64; align = 64; signed = false; } := uint64_t;\n"
  70 "\n"
  71 "trace {\n"
  72 "       major = %u;\n"                  /* major (e.g. 0) */
  73 "       minor = %u;\n"                  /* minor (e.g. 1) */
  74 "       uuid = \"%s\";\n"               /* UUID */
  75 "       byte_order = %s;\n"             /* be or le */
  76 "       packet.header := struct {\n"
  77 "               uint32_t magic;\n"
  78 "               uint8_t  uuid[16];\n"
  79 "       };\n"
  80 "};\n"
  81 "\n"
  82 "stream {\n"
  83 "       packet.context := struct {\n"
  84 "               uint64_t content_size;\n"
  85 "               uint64_t packet_size;\n"
  86 "       };\n"
  87 "%s"                                    /* Stream event header (opt.) */
  88 "};\n"
  89 "\n"
  90 "event {\n"
  91 "       name = string;\n"
  92 "       fields := struct { string str; };\n"
  93 "};\n";
  94
  95 static const char metadata_stream_event_header_timestamp[] =
  96 "       typealias integer { size = 64; align = 64; signed = false; } := uint64_t;\n"
  97 "       event.header := struct {\n"
  98 "               uint64_t timestamp;\n"
  99 "       };\n";
 100
 101 static
 102 void print_metadata(FILE *fp)
 103 {
 104         char uuid_str[BABELTRACE_UUID_STR_LEN];
 105         unsigned int major = 0, minor = 0;
 106         int ret;
 107
 108         ret = sscanf(VERSION, "%u.%u", &major, &minor);
 109         if (ret != 2)
 110                 fprintf(stderr, "[warning] Incorrect babeltrace version format\n.");
 111         babeltrace_uuid_unparse(s_uuid, uuid_str);
 112         fprintf(fp, metadata_fmt,
 113                 major,
 114                 minor,
 115                 uuid_str,
 116                 BYTE_ORDER == LITTLE_ENDIAN ? "le" : "be",
 117                 s_timestamp ? metadata_stream_event_header_timestamp : "");
 118 }
 119
 120 static
 121 void write_packet_header(struct ctf_stream_pos *pos, unsigned char *uuid)
 122 {
 123         struct ctf_stream_pos dummy;
 124
 125         /* magic */
 126         ctf_dummy_pos(pos, &dummy);
 127         if (!ctf_align_pos(&dummy, sizeof(uint32_t) * CHAR_BIT))
 128                 goto error;
 129         if (!ctf_move_pos(&dummy, sizeof(uint32_t) * CHAR_BIT))
 130                 goto error;
 131         assert(!ctf_pos_packet(&dummy));
 132
 133         if (!ctf_align_pos(pos, sizeof(uint32_t) * CHAR_BIT))
 134                 goto error;
 135         *(uint32_t *) ctf_get_pos_addr(pos) = 0xC1FC1FC1;
 136         if (!ctf_move_pos(pos, sizeof(uint32_t) * CHAR_BIT))
 137                 goto error;
 138
 139         /* uuid */
 140         ctf_dummy_pos(pos, &dummy);
 141         if (!ctf_align_pos(&dummy, sizeof(uint8_t) * CHAR_BIT))
 142                 goto error;
 143         if (!ctf_move_pos(&dummy, 16 * CHAR_BIT))
 144                 goto error;
 145         assert(!ctf_pos_packet(&dummy));
 146
 147         if (!ctf_align_pos(pos, sizeof(uint8_t) * CHAR_BIT))
 148                 goto error;
 149         memcpy(ctf_get_pos_addr(pos), uuid, BABELTRACE_UUID_LEN);
 150         if (!ctf_move_pos(pos, BABELTRACE_UUID_LEN * CHAR_BIT))
 151                 goto error;
 152         return;
 153
 154 error:
 155         fprintf(stderr, "[error] Out of packet bounds when writing packet header\n");
 156         abort();
 157 }
 158
 159 static
 160 void write_packet_context(struct ctf_stream_pos *pos)
 161 {
 162         struct ctf_stream_pos dummy;
 163
 164         /* content_size */
 165         ctf_dummy_pos(pos, &dummy);
 166         if (!ctf_align_pos(&dummy, sizeof(uint64_t) * CHAR_BIT))
 167                 goto error;
 168         if (!ctf_move_pos(&dummy, sizeof(uint64_t) * CHAR_BIT))
 169                 goto error;
 170         assert(!ctf_pos_packet(&dummy));
 171
 172         if (!ctf_align_pos(pos, sizeof(uint64_t) * CHAR_BIT))
 173                 goto error;
 174         *(uint64_t *) ctf_get_pos_addr(pos) = ~0ULL;    /* Not known yet */
 175         pos->content_size_loc = (uint64_t *) ctf_get_pos_addr(pos);
 176         if (!ctf_move_pos(pos, sizeof(uint64_t) * CHAR_BIT))
 177                 goto error;
 178
 179         /* packet_size */
 180         ctf_dummy_pos(pos, &dummy);
 181         if (!ctf_align_pos(&dummy, sizeof(uint64_t) * CHAR_BIT))
 182                 goto error;
 183         if (!ctf_move_pos(&dummy, sizeof(uint64_t) * CHAR_BIT))
 184                 goto error;
 185         assert(!ctf_pos_packet(&dummy));
 186
 187         if (!ctf_align_pos(pos, sizeof(uint64_t) * CHAR_BIT))
 188                 goto error;
 189         *(uint64_t *) ctf_get_pos_addr(pos) = pos->packet_size;
 190         if (!ctf_move_pos(pos, sizeof(uint64_t) * CHAR_BIT))
 191                 goto error;
 192         return;
 193
 194 error:
 195         fprintf(stderr, "[error] Out of packet bounds when writing packet context\n");
 196         abort();
 197 }
 198
 199 static
 200 void write_event_header(struct ctf_stream_pos *pos, char *line,
 201                         char **tline, size_t len, size_t *tlen,
 202                         uint64_t *ts)
 203 {
 204         if (!s_timestamp)
 205                 return;
 206
 207         /* Only need to be executed on first pass (dummy) */
 208         if (pos->dummy) {
 209                 int has_timestamp = 0;
 210                 unsigned long sec, usec, msec;
 211                 unsigned int year, mon, mday, hour, min;
 212
 213                 /* Extract time from input line */
 214                 if (sscanf(line, "[%lu.%lu] ", &sec, &usec) == 2) {
 215                         *ts = (uint64_t) sec * USEC_PER_SEC + (uint64_t) usec;
 216                         /*
 217                          * Default CTF clock has 1GHz frequency. Convert
 218                          * from usec to nsec.
 219                          */
 220                         *ts *= NSEC_PER_USEC;
 221                         has_timestamp = 1;
 222                 } else if (sscanf(line, "[%u-%u-%u %u:%u:%lu.%lu] ",
 223                                 &year, &mon, &mday, &hour, &min,
 224                                 &sec, &msec) == 7) {
 225                         time_t ep_sec;
 226                         struct tm ti;
 227
 228                         memset(&ti, 0, sizeof(ti));
 229                         ti.tm_year = year - 1900;       /* from 1900 */
 230                         ti.tm_mon = mon - 1;            /* 0 to 11 */
 231                         ti.tm_mday = mday;
 232                         ti.tm_hour = hour;
 233                         ti.tm_min = min;
 234                         ti.tm_sec = sec;
 235
 236                         ep_sec = babeltrace_timegm(&ti);
 237                         if (ep_sec != (time_t) -1) {
 238                                 *ts = (uint64_t) ep_sec * NSEC_PER_SEC
 239                                         + (uint64_t) msec * NSEC_PER_MSEC;
 240                         }
 241                         has_timestamp = 1;
 242                 }
 243                 if (has_timestamp) {
 244                         *tline = strchr(line, ']');
 245                         assert(*tline);
 246                         (*tline)++;
 247                         if ((*tline)[0] == ' ') {
 248                                 (*tline)++;
 249                         }
 250                         *tlen = len + line - *tline;
 251                 }
 252         }
 253         /* timestamp */
 254         if (!ctf_align_pos(pos, sizeof(uint64_t) * CHAR_BIT))
 255                 goto error;
 256         if (!pos->dummy)
 257                 *(uint64_t *) ctf_get_pos_addr(pos) = *ts;
 258         if (!ctf_move_pos(pos, sizeof(uint64_t) * CHAR_BIT))
 259                 goto error;
 260         return;
 261
 262 error:
 263         fprintf(stderr, "[error] Out of packet bounds when writing event header\n");
 264         abort();
 265 }
 266
 267 static
 268 void trace_string(char *line, struct ctf_stream_pos *pos, size_t len)
 269 {
 270         struct ctf_stream_pos dummy;
 271         int attempt = 0;
 272         char *tline = line;     /* tline is start of text, after timestamp */
 273         size_t tlen = len;
 274         uint64_t ts = 0;
 275
 276         printf_debug("read: %s\n", line);
 277
 278         for (;;) {
 279                 ctf_dummy_pos(pos, &dummy);
 280                 write_event_header(&dummy, line, &tline, len, &tlen, &ts);
 281                 if (!ctf_align_pos(&dummy, sizeof(uint8_t) * CHAR_BIT))
 282                         goto error;
 283                 if (!ctf_move_pos(&dummy, tlen * CHAR_BIT))
 284                         goto error;
 285                 if (ctf_pos_packet(&dummy)) {
 286                         ctf_pos_pad_packet(pos);
 287                         write_packet_header(pos, s_uuid);
 288                         write_packet_context(pos);
 289                         if (attempt++ == 1) {
 290                                 fprintf(stderr, "[Error] Line too large for packet size (%" PRIu64 "kB) (discarded)\n",
 291                                         pos->packet_size / CHAR_BIT / 1024);
 292                                 return;
 293                         }
 294                         continue;
 295                 } else {
 296                         break;
 297                 }
 298         }
 299
 300         write_event_header(pos, line, &tline, len, &tlen, &ts);
 301         if (!ctf_align_pos(pos, sizeof(uint8_t) * CHAR_BIT))
 302                 goto error;
 303         memcpy(ctf_get_pos_addr(pos), tline, tlen);
 304         if (!ctf_move_pos(pos, tlen * CHAR_BIT))
 305                 goto error;
 306         return;
 307
 308 error:
 309         fprintf(stderr, "[error] Out of packet bounds when writing event payload\n");
 310         abort();
 311 }
 312
 313 static
 314 void trace_text(FILE *input, int output)
 315 {
 316         struct ctf_stream_pos pos;
 317         ssize_t len;
 318         char *line = NULL, *nl;
 319         size_t linesize;
 320         int ret;
 321
 322         memset(&pos, 0, sizeof(pos));
 323         ret = ctf_init_pos(&pos, NULL, output, O_RDWR);
 324         if (ret) {
 325                 fprintf(stderr, "Error in ctf_init_pos\n");
 326                 return;
 327         }
 328         write_packet_header(&pos, s_uuid);
 329         write_packet_context(&pos);
 330         for (;;) {
 331                 len = getline(&line, &linesize, input);
 332                 if (len < 0)
 333                         break;
 334                 nl = strrchr(line, '\n');
 335                 if (nl) {
 336                         *nl = '\0';
 337                         trace_string(line, &pos, nl - line + 1);
 338                 } else {
 339                         trace_string(line, &pos, strlen(line) + 1);
 340                 }
 341         }
 342         ret = ctf_fini_pos(&pos);
 343         if (ret) {
 344                 fprintf(stderr, "Error in ctf_fini_pos\n");
 345         }
 346 }
 347
 348 static
 349 void usage(FILE *fp)
 350 {
 351         fprintf(fp, "BabelTrace Log Converter %s\n", VERSION);
 352         fprintf(fp, "\n");
 353         fprintf(fp, "Convert for a text log (read from standard input) to CTF.\n");
 354         fprintf(fp, "\n");
 355         fprintf(fp, "usage : babeltrace-log [OPTIONS] OUTPUT\n");
 356         fprintf(fp, "\n");
 357         fprintf(fp, "  OUTPUT                         Output trace path\n");
 358         fprintf(fp, "\n");
 359         fprintf(fp, "  -t                             With timestamps (format: [sec.usec] string\\n)\n");
 360         fprintf(fp, "                                                 (format: [YYYY-MM-DD HH:MM:SS.MS] string\\n)\n");
 361         fprintf(fp, "\n");
 362 }
 363
 364 static
 365 int parse_args(int argc, char **argv)
 366 {
 367         int i;
 368
 369         for (i = 1; i < argc; i++) {
 370                 if (!strcmp(argv[i], "-t"))
 371                         s_timestamp = 1;
 372                 else if (!strcmp(argv[i], "-h")) {
 373                         s_help = 1;
 374                         return 0;
 375                 } else if (argv[i][0] == '-')
 376                         return -EINVAL;
 377                 else
 378                         s_outputname = argv[i];
 379         }
 380         if (!s_outputname)
 381                 return -EINVAL;
 382         return 0;
 383 }
 384
 385 int main(int argc, char **argv)
 386 {
 387         int fd, metadata_fd, ret;
 388         DIR *dir;
 389         int dir_fd;
 390         FILE *metadata_fp;
 391
 392         ret = parse_args(argc, argv);
 393         if (ret) {
 394                 fprintf(stderr, "Error: invalid argument.\n");
 395                 usage(stderr);
 396                 goto error;
 397         }
 398
 399         if (s_help) {
 400                 usage(stdout);
 401                 exit(EXIT_SUCCESS);
 402         }
 403
 404         ret = mkdir(s_outputname, S_IRWXU|S_IRWXG);
 405         if (ret) {
 406                 perror("mkdir");
 407                 goto error;
 408         }
 409
 410         dir = opendir(s_outputname);
 411         if (!dir) {
 412                 perror("opendir");
 413                 goto error_rmdir;
 414         }
 415         dir_fd = dirfd(dir);
 416         if (dir_fd < 0) {
 417                 perror("dirfd");
 418                 goto error_closedir;
 419         }
 420
 421         fd = openat(dir_fd, "datastream", O_RDWR|O_CREAT,
 422                     S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP);
 423         if (fd < 0) {
 424                 perror("openat");
 425                 goto error_closedirfd;
 426         }
 427
 428         metadata_fd = openat(dir_fd, "metadata", O_RDWR|O_CREAT,
 429                              S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP);
 430         if (metadata_fd < 0) {
 431                 perror("openat");
 432                 goto error_closedatastream;
 433         }
 434         metadata_fp = fdopen(metadata_fd, "w");
 435         if (!metadata_fp) {
 436                 perror("fdopen");
 437                 goto error_closemetadatafd;
 438         }
 439
 440         babeltrace_uuid_generate(s_uuid);
 441         print_metadata(metadata_fp);
 442         trace_text(stdin, fd);
 443
 444         ret = close(fd);
 445         if (ret)
 446                 perror("close");
 447         exit(EXIT_SUCCESS);
 448
 449         /* error handling */
 450 error_closemetadatafd:
 451         ret = close(metadata_fd);
 452         if (ret)
 453                 perror("close");
 454 error_closedatastream:
 455         ret = close(fd);
 456         if (ret)
 457                 perror("close");
 458 error_closedirfd:
 459         ret = close(dir_fd);
 460         if (ret)
 461                 perror("close");
 462 error_closedir:
 463         ret = closedir(dir);
 464         if (ret)
 465                 perror("closedir");
 466 error_rmdir:
 467         ret = rmdir(s_outputname);
 468         if (ret)
 469                 perror("rmdir");
 470 error:
 471         exit(EXIT_FAILURE);
 472 }