PostgreSQL Source Code  git master
pg_receivewal.c
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1 /*-------------------------------------------------------------------------
2  *
3  * pg_receivewal.c - receive streaming WAL data and write it
4  * to a local file.
5  *
6  * Author: Magnus Hagander <magnus@hagander.net>
7  *
8  * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
9  *
10  * IDENTIFICATION
11  * src/bin/pg_basebackup/pg_receivewal.c
12  *-------------------------------------------------------------------------
13  */
14 
15 #include "postgres_fe.h"
16 
17 #include <dirent.h>
18 #include <signal.h>
19 #include <sys/stat.h>
20 #include <unistd.h>
21 
22 #include "common/file_perm.h"
23 #include "common/logging.h"
24 #include "libpq-fe.h"
25 #include "access/xlog_internal.h"
26 #include "getopt_long.h"
27 
28 #include "receivelog.h"
29 #include "streamutil.h"
30 
31 
32 /* Time to sleep between reconnection attempts */
33 #define RECONNECT_SLEEP_TIME 5
34 
35 /* Global options */
36 static char *basedir = NULL;
37 static int verbose = 0;
38 static int compresslevel = 0;
39 static int noloop = 0;
40 static int standby_message_timeout = 10 * 1000; /* 10 sec = default */
41 static volatile bool time_to_stop = false;
42 static bool do_create_slot = false;
43 static bool slot_exists_ok = false;
44 static bool do_drop_slot = false;
45 static bool do_sync = true;
46 static bool synchronous = false;
47 static char *replication_slot = NULL;
49 
50 
51 static void usage(void);
52 static DIR *get_destination_dir(char *dest_folder);
53 static void close_destination_dir(DIR *dest_dir, char *dest_folder);
55 static void StreamLog(void);
56 static bool stop_streaming(XLogRecPtr segendpos, uint32 timeline,
57  bool segment_finished);
58 
59 static void
61 {
62  if (conn != NULL)
63  PQfinish(conn);
64 }
65 
66 /* Routines to evaluate segment file format */
67 #define IsCompressXLogFileName(fname) \
68  (strlen(fname) == XLOG_FNAME_LEN + strlen(".gz") && \
69  strspn(fname, "0123456789ABCDEF") == XLOG_FNAME_LEN && \
70  strcmp((fname) + XLOG_FNAME_LEN, ".gz") == 0)
71 #define IsPartialCompressXLogFileName(fname) \
72  (strlen(fname) == XLOG_FNAME_LEN + strlen(".gz.partial") && \
73  strspn(fname, "0123456789ABCDEF") == XLOG_FNAME_LEN && \
74  strcmp((fname) + XLOG_FNAME_LEN, ".gz.partial") == 0)
75 
76 static void
77 usage(void)
78 {
79  printf(_("%s receives PostgreSQL streaming write-ahead logs.\n\n"),
80  progname);
81  printf(_("Usage:\n"));
82  printf(_(" %s [OPTION]...\n"), progname);
83  printf(_("\nOptions:\n"));
84  printf(_(" -D, --directory=DIR receive write-ahead log files into this directory\n"));
85  printf(_(" -E, --endpos=LSN exit after receiving the specified LSN\n"));
86  printf(_(" --if-not-exists do not error if slot already exists when creating a slot\n"));
87  printf(_(" -n, --no-loop do not loop on connection lost\n"));
88  printf(_(" --no-sync do not wait for changes to be written safely to disk\n"));
89  printf(_(" -s, --status-interval=SECS\n"
90  " time between status packets sent to server (default: %d)\n"), (standby_message_timeout / 1000));
91  printf(_(" -S, --slot=SLOTNAME replication slot to use\n"));
92  printf(_(" --synchronous flush write-ahead log immediately after writing\n"));
93  printf(_(" -v, --verbose output verbose messages\n"));
94  printf(_(" -V, --version output version information, then exit\n"));
95  printf(_(" -Z, --compress=0-9 compress logs with given compression level\n"));
96  printf(_(" -?, --help show this help, then exit\n"));
97  printf(_("\nConnection options:\n"));
98  printf(_(" -d, --dbname=CONNSTR connection string\n"));
99  printf(_(" -h, --host=HOSTNAME database server host or socket directory\n"));
100  printf(_(" -p, --port=PORT database server port number\n"));
101  printf(_(" -U, --username=NAME connect as specified database user\n"));
102  printf(_(" -w, --no-password never prompt for password\n"));
103  printf(_(" -W, --password force password prompt (should happen automatically)\n"));
104  printf(_("\nOptional actions:\n"));
105  printf(_(" --create-slot create a new replication slot (for the slot's name see --slot)\n"));
106  printf(_(" --drop-slot drop the replication slot (for the slot's name see --slot)\n"));
107  printf(_("\nReport bugs to <pgsql-bugs@lists.postgresql.org>.\n"));
108 }
109 
110 static bool
111 stop_streaming(XLogRecPtr xlogpos, uint32 timeline, bool segment_finished)
112 {
113  static uint32 prevtimeline = 0;
114  static XLogRecPtr prevpos = InvalidXLogRecPtr;
115 
116  /* we assume that we get called once at the end of each segment */
117  if (verbose && segment_finished)
118  pg_log_info("finished segment at %X/%X (timeline %u)",
119  (uint32) (xlogpos >> 32), (uint32) xlogpos,
120  timeline);
121 
122  if (!XLogRecPtrIsInvalid(endpos) && endpos < xlogpos)
123  {
124  if (verbose)
125  pg_log_info("stopped log streaming at %X/%X (timeline %u)",
126  (uint32) (xlogpos >> 32), (uint32) xlogpos,
127  timeline);
128  time_to_stop = true;
129  return true;
130  }
131 
132  /*
133  * Note that we report the previous, not current, position here. After a
134  * timeline switch, xlogpos points to the beginning of the segment because
135  * that's where we always begin streaming. Reporting the end of previous
136  * timeline isn't totally accurate, because the next timeline can begin
137  * slightly before the end of the WAL that we received on the previous
138  * timeline, but it's close enough for reporting purposes.
139  */
140  if (verbose && prevtimeline != 0 && prevtimeline != timeline)
141  pg_log_info("switched to timeline %u at %X/%X",
142  timeline,
143  (uint32) (prevpos >> 32), (uint32) prevpos);
144 
145  prevtimeline = timeline;
146  prevpos = xlogpos;
147 
148  if (time_to_stop)
149  {
150  if (verbose)
151  pg_log_info("received interrupt signal, exiting");
152  return true;
153  }
154  return false;
155 }
156 
157 
158 /*
159  * Get destination directory.
160  */
161 static DIR *
162 get_destination_dir(char *dest_folder)
163 {
164  DIR *dir;
165 
166  Assert(dest_folder != NULL);
167  dir = opendir(dest_folder);
168  if (dir == NULL)
169  {
170  pg_log_error("could not open directory \"%s\": %m", basedir);
171  exit(1);
172  }
173 
174  return dir;
175 }
176 
177 
178 /*
179  * Close existing directory.
180  */
181 static void
182 close_destination_dir(DIR *dest_dir, char *dest_folder)
183 {
184  Assert(dest_dir != NULL && dest_folder != NULL);
185  if (closedir(dest_dir))
186  {
187  pg_log_error("could not close directory \"%s\": %m", dest_folder);
188  exit(1);
189  }
190 }
191 
192 
193 /*
194  * Determine starting location for streaming, based on any existing xlog
195  * segments in the directory. We start at the end of the last one that is
196  * complete (size matches wal segment size), on the timeline with highest ID.
197  *
198  * If there are no WAL files in the directory, returns InvalidXLogRecPtr.
199  */
200 static XLogRecPtr
202 {
203  DIR *dir;
204  struct dirent *dirent;
205  XLogSegNo high_segno = 0;
206  uint32 high_tli = 0;
207  bool high_ispartial = false;
208 
210 
211  while (errno = 0, (dirent = readdir(dir)) != NULL)
212  {
213  uint32 tli;
214  XLogSegNo segno;
215  bool ispartial;
216  bool iscompress;
217 
218  /*
219  * Check if the filename looks like an xlog file, or a .partial file.
220  */
221  if (IsXLogFileName(dirent->d_name))
222  {
223  ispartial = false;
224  iscompress = false;
225  }
226  else if (IsPartialXLogFileName(dirent->d_name))
227  {
228  ispartial = true;
229  iscompress = false;
230  }
231  else if (IsCompressXLogFileName(dirent->d_name))
232  {
233  ispartial = false;
234  iscompress = true;
235  }
236  else if (IsPartialCompressXLogFileName(dirent->d_name))
237  {
238  ispartial = true;
239  iscompress = true;
240  }
241  else
242  continue;
243 
244  /*
245  * Looks like an xlog file. Parse its position.
246  */
247  XLogFromFileName(dirent->d_name, &tli, &segno, WalSegSz);
248 
249  /*
250  * Check that the segment has the right size, if it's supposed to be
251  * completed. For non-compressed segments just check the on-disk size
252  * and see if it matches a completed segment. For compressed segments,
253  * look at the last 4 bytes of the compressed file, which is where the
254  * uncompressed size is located for gz files with a size lower than
255  * 4GB, and then compare it to the size of a completed segment. The 4
256  * last bytes correspond to the ISIZE member according to
257  * http://www.zlib.org/rfc-gzip.html.
258  */
259  if (!ispartial && !iscompress)
260  {
261  struct stat statbuf;
262  char fullpath[MAXPGPATH * 2];
263 
264  snprintf(fullpath, sizeof(fullpath), "%s/%s", basedir, dirent->d_name);
265  if (stat(fullpath, &statbuf) != 0)
266  {
267  pg_log_error("could not stat file \"%s\": %m", fullpath);
268  exit(1);
269  }
270 
271  if (statbuf.st_size != WalSegSz)
272  {
273  pg_log_warning("segment file \"%s\" has incorrect size %d, skipping",
274  dirent->d_name, (int) statbuf.st_size);
275  continue;
276  }
277  }
278  else if (!ispartial && iscompress)
279  {
280  int fd;
281  char buf[4];
282  int bytes_out;
283  char fullpath[MAXPGPATH * 2];
284  int r;
285 
286  snprintf(fullpath, sizeof(fullpath), "%s/%s", basedir, dirent->d_name);
287 
288  fd = open(fullpath, O_RDONLY | PG_BINARY, 0);
289  if (fd < 0)
290  {
291  pg_log_error("could not open compressed file \"%s\": %m",
292  fullpath);
293  exit(1);
294  }
295  if (lseek(fd, (off_t) (-4), SEEK_END) < 0)
296  {
297  pg_log_error("could not seek in compressed file \"%s\": %m",
298  fullpath);
299  exit(1);
300  }
301  r = read(fd, (char *) buf, sizeof(buf));
302  if (r != sizeof(buf))
303  {
304  if (r < 0)
305  pg_log_error("could not read compressed file \"%s\": %m",
306  fullpath);
307  else
308  pg_log_error("could not read compressed file \"%s\": read %d of %zu",
309  fullpath, r, sizeof(buf));
310  exit(1);
311  }
312 
313  close(fd);
314  bytes_out = (buf[3] << 24) | (buf[2] << 16) |
315  (buf[1] << 8) | buf[0];
316 
317  if (bytes_out != WalSegSz)
318  {
319  pg_log_warning("compressed segment file \"%s\" has incorrect uncompressed size %d, skipping",
320  dirent->d_name, bytes_out);
321  continue;
322  }
323  }
324 
325  /* Looks like a valid segment. Remember that we saw it. */
326  if ((segno > high_segno) ||
327  (segno == high_segno && tli > high_tli) ||
328  (segno == high_segno && tli == high_tli && high_ispartial && !ispartial))
329  {
330  high_segno = segno;
331  high_tli = tli;
332  high_ispartial = ispartial;
333  }
334  }
335 
336  if (errno)
337  {
338  pg_log_error("could not read directory \"%s\": %m", basedir);
339  exit(1);
340  }
341 
343 
344  if (high_segno > 0)
345  {
346  XLogRecPtr high_ptr;
347 
348  /*
349  * Move the starting pointer to the start of the next segment, if the
350  * highest one we saw was completed. Otherwise start streaming from
351  * the beginning of the .partial segment.
352  */
353  if (!high_ispartial)
354  high_segno++;
355 
356  XLogSegNoOffsetToRecPtr(high_segno, 0, WalSegSz, high_ptr);
357 
358  *tli = high_tli;
359  return high_ptr;
360  }
361  else
362  return InvalidXLogRecPtr;
363 }
364 
365 /*
366  * Start the log streaming
367  */
368 static void
370 {
371  XLogRecPtr serverpos;
372  TimeLineID servertli;
373  StreamCtl stream;
374 
375  MemSet(&stream, 0, sizeof(stream));
376 
377  /*
378  * Connect in replication mode to the server
379  */
380  if (conn == NULL)
381  conn = GetConnection();
382  if (!conn)
383  /* Error message already written in GetConnection() */
384  return;
385 
387  {
388  /*
389  * Error message already written in CheckServerVersionForStreaming().
390  * There's no hope of recovering from a version mismatch, so don't
391  * retry.
392  */
393  exit(1);
394  }
395 
396  /*
397  * Identify server, obtaining start LSN position and current timeline ID
398  * at the same time, necessary if not valid data can be found in the
399  * existing output directory.
400  */
401  if (!RunIdentifySystem(conn, NULL, &servertli, &serverpos, NULL))
402  exit(1);
403 
404  /*
405  * Figure out where to start streaming.
406  */
407  stream.startpos = FindStreamingStart(&stream.timeline);
408  if (stream.startpos == InvalidXLogRecPtr)
409  {
410  stream.startpos = serverpos;
411  stream.timeline = servertli;
412  }
413 
414  /*
415  * Always start streaming at the beginning of a segment
416  */
417  stream.startpos -= XLogSegmentOffset(stream.startpos, WalSegSz);
418 
419  /*
420  * Start the replication
421  */
422  if (verbose)
423  pg_log_info("starting log streaming at %X/%X (timeline %u)",
424  (uint32) (stream.startpos >> 32), (uint32) stream.startpos,
425  stream.timeline);
426 
427  stream.stream_stop = stop_streaming;
428  stream.stop_socket = PGINVALID_SOCKET;
430  stream.synchronous = synchronous;
431  stream.do_sync = do_sync;
432  stream.mark_done = false;
434  stream.do_sync);
435  stream.partial_suffix = ".partial";
437 
438  ReceiveXlogStream(conn, &stream);
439 
440  if (!stream.walmethod->finish())
441  {
442  pg_log_info("could not finish writing WAL files: %m");
443  return;
444  }
445 
446  PQfinish(conn);
447  conn = NULL;
448 
450  pg_free(stream.walmethod);
451 
452  conn = NULL;
453 }
454 
455 /*
456  * When sigint is called, just tell the system to exit at the next possible
457  * moment.
458  */
459 #ifndef WIN32
460 
461 static void
462 sigint_handler(int signum)
463 {
464  time_to_stop = true;
465 }
466 #endif
467 
468 int
469 main(int argc, char **argv)
470 {
471  static struct option long_options[] = {
472  {"help", no_argument, NULL, '?'},
473  {"version", no_argument, NULL, 'V'},
474  {"directory", required_argument, NULL, 'D'},
475  {"dbname", required_argument, NULL, 'd'},
476  {"endpos", required_argument, NULL, 'E'},
477  {"host", required_argument, NULL, 'h'},
478  {"port", required_argument, NULL, 'p'},
479  {"username", required_argument, NULL, 'U'},
480  {"no-loop", no_argument, NULL, 'n'},
481  {"no-password", no_argument, NULL, 'w'},
482  {"password", no_argument, NULL, 'W'},
483  {"status-interval", required_argument, NULL, 's'},
484  {"slot", required_argument, NULL, 'S'},
485  {"verbose", no_argument, NULL, 'v'},
486  {"compress", required_argument, NULL, 'Z'},
487 /* action */
488  {"create-slot", no_argument, NULL, 1},
489  {"drop-slot", no_argument, NULL, 2},
490  {"if-not-exists", no_argument, NULL, 3},
491  {"synchronous", no_argument, NULL, 4},
492  {"no-sync", no_argument, NULL, 5},
493  {NULL, 0, NULL, 0}
494  };
495 
496  int c;
497  int option_index;
498  char *db_name;
499  uint32 hi,
500  lo;
501 
502  pg_logging_init(argv[0]);
503  progname = get_progname(argv[0]);
504  set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_basebackup"));
505 
506  if (argc > 1)
507  {
508  if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
509  {
510  usage();
511  exit(0);
512  }
513  else if (strcmp(argv[1], "-V") == 0 ||
514  strcmp(argv[1], "--version") == 0)
515  {
516  puts("pg_receivewal (PostgreSQL) " PG_VERSION);
517  exit(0);
518  }
519  }
520 
521  while ((c = getopt_long(argc, argv, "D:d:E:h:p:U:s:S:nwWvZ:",
522  long_options, &option_index)) != -1)
523  {
524  switch (c)
525  {
526  case 'D':
528  break;
529  case 'd':
531  break;
532  case 'h':
534  break;
535  case 'p':
536  if (atoi(optarg) <= 0)
537  {
538  pg_log_error("invalid port number \"%s\"", optarg);
539  exit(1);
540  }
542  break;
543  case 'U':
545  break;
546  case 'w':
547  dbgetpassword = -1;
548  break;
549  case 'W':
550  dbgetpassword = 1;
551  break;
552  case 's':
553  standby_message_timeout = atoi(optarg) * 1000;
554  if (standby_message_timeout < 0)
555  {
556  pg_log_error("invalid status interval \"%s\"", optarg);
557  exit(1);
558  }
559  break;
560  case 'S':
562  break;
563  case 'E':
564  if (sscanf(optarg, "%X/%X", &hi, &lo) != 2)
565  {
566  pg_log_error("could not parse end position \"%s\"", optarg);
567  exit(1);
568  }
569  endpos = ((uint64) hi) << 32 | lo;
570  break;
571  case 'n':
572  noloop = 1;
573  break;
574  case 'v':
575  verbose++;
576  break;
577  case 'Z':
578  compresslevel = atoi(optarg);
579  if (compresslevel < 0 || compresslevel > 9)
580  {
581  pg_log_error("invalid compression level \"%s\"", optarg);
582  exit(1);
583  }
584  break;
585 /* action */
586  case 1:
587  do_create_slot = true;
588  break;
589  case 2:
590  do_drop_slot = true;
591  break;
592  case 3:
593  slot_exists_ok = true;
594  break;
595  case 4:
596  synchronous = true;
597  break;
598  case 5:
599  do_sync = false;
600  break;
601  default:
602 
603  /*
604  * getopt_long already emitted a complaint
605  */
606  fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
607  progname);
608  exit(1);
609  }
610  }
611 
612  /*
613  * Any non-option arguments?
614  */
615  if (optind < argc)
616  {
617  pg_log_error("too many command-line arguments (first is \"%s\")",
618  argv[optind]);
619  fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
620  progname);
621  exit(1);
622  }
623 
625  {
626  pg_log_error("cannot use --create-slot together with --drop-slot");
627  fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
628  progname);
629  exit(1);
630  }
631 
632  if (replication_slot == NULL && (do_drop_slot || do_create_slot))
633  {
634  /* translator: second %s is an option name */
635  pg_log_error("%s needs a slot to be specified using --slot",
636  do_drop_slot ? "--drop-slot" : "--create-slot");
637  fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
638  progname);
639  exit(1);
640  }
641 
642  if (synchronous && !do_sync)
643  {
644  pg_log_error("cannot use --synchronous together with --no-sync");
645  fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
646  progname);
647  exit(1);
648  }
649 
650  /*
651  * Required arguments
652  */
653  if (basedir == NULL && !do_drop_slot && !do_create_slot)
654  {
655  pg_log_error("no target directory specified");
656  fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
657  progname);
658  exit(1);
659  }
660 
661 #ifndef HAVE_LIBZ
662  if (compresslevel != 0)
663  {
664  pg_log_error("this build does not support compression");
665  exit(1);
666  }
667 #endif
668 
669  /*
670  * Check existence of destination folder.
671  */
672  if (!do_drop_slot && !do_create_slot)
673  {
675 
677  }
678 
679 #ifndef WIN32
680  pqsignal(SIGINT, sigint_handler);
681 #endif
682 
683  /*
684  * Obtain a connection before doing anything.
685  */
686  conn = GetConnection();
687  if (!conn)
688  /* error message already written in GetConnection() */
689  exit(1);
690  atexit(disconnect_atexit);
691 
692  /*
693  * Run IDENTIFY_SYSTEM to make sure we've successfully have established a
694  * replication connection and haven't connected using a database specific
695  * connection.
696  */
697  if (!RunIdentifySystem(conn, NULL, NULL, NULL, &db_name))
698  exit(1);
699 
700  /*
701  * Set umask so that directories/files are created with the same
702  * permissions as directories/files in the source data directory.
703  *
704  * pg_mode_mask is set to owner-only by default and then updated in
705  * GetConnection() where we get the mode from the server-side with
706  * RetrieveDataDirCreatePerm() and then call SetDataDirectoryCreatePerm().
707  */
708  umask(pg_mode_mask);
709 
710  /* determine remote server's xlog segment size */
711  if (!RetrieveWalSegSize(conn))
712  exit(1);
713 
714  /*
715  * Check that there is a database associated with connection, none should
716  * be defined in this context.
717  */
718  if (db_name)
719  {
720  pg_log_error("replication connection using slot \"%s\" is unexpectedly database specific",
722  exit(1);
723  }
724 
725  /*
726  * Drop a replication slot.
727  */
728  if (do_drop_slot)
729  {
730  if (verbose)
731  pg_log_info("dropping replication slot \"%s\"", replication_slot);
732 
734  exit(1);
735  exit(0);
736  }
737 
738  /* Create a replication slot */
739  if (do_create_slot)
740  {
741  if (verbose)
742  pg_log_info("creating replication slot \"%s\"", replication_slot);
743 
744  if (!CreateReplicationSlot(conn, replication_slot, NULL, false, true, false,
746  exit(1);
747  exit(0);
748  }
749 
750  /*
751  * Don't close the connection here so that subsequent StreamLog() can
752  * reuse it.
753  */
754 
755  while (true)
756  {
757  StreamLog();
758  if (time_to_stop)
759  {
760  /*
761  * We've been Ctrl-C'ed or end of streaming position has been
762  * willingly reached, so exit without an error code.
763  */
764  exit(0);
765  }
766  else if (noloop)
767  {
768  pg_log_error("disconnected");
769  exit(1);
770  }
771  else
772  {
773  /* translator: check source for value for %d */
774  pg_log_info("disconnected; waiting %d seconds to try again",
776  pg_usleep(RECONNECT_SLEEP_TIME * 1000000);
777  }
778  }
779 }
static char * replication_slot
Definition: pg_receivewal.c:47
#define InvalidXLogRecPtr
Definition: xlogdefs.h:28
int main(int argc, char **argv)
static int standby_message_timeout
Definition: pg_receivewal.c:40
uint32 TimeLineID
Definition: xlogdefs.h:52
bool do_sync
Definition: receivelog.h:39
const char * get_progname(const char *argv0)
Definition: path.c:453
static void DropReplicationSlot(DropReplicationSlotCmd *cmd)
Definition: walsender.c:1051
#define pg_log_error(...)
Definition: logging.h:79
int getopt_long(int argc, char *const argv[], const char *optstring, const struct option *longopts, int *longindex)
Definition: getopt_long.c:57
static void usage(void)
Definition: pg_receivewal.c:77
void pg_logging_init(const char *argv0)
Definition: logging.c:39
#define IsPartialCompressXLogFileName(fname)
Definition: pg_receivewal.c:71
bool RunIdentifySystem(PGconn *conn, char **sysid, TimeLineID *starttli, XLogRecPtr *startpos, char **db_name)
Definition: streamutil.c:409
int closedir(DIR *)
Definition: dirent.c:113
void PQfinish(PGconn *conn)
Definition: fe-connect.c:4098
#define MemSet(start, val, len)
Definition: c.h:955
static bool synchronous
Definition: pg_receivewal.c:46
#define printf(...)
Definition: port.h:198
XLogRecPtr startpos
Definition: receivelog.h:32
char * partial_suffix
Definition: receivelog.h:48
static bool stop_streaming(XLogRecPtr segendpos, uint32 timeline, bool segment_finished)
const char * progname
Definition: pg_standby.c:37
#define fprintf
Definition: port.h:196
static void close_destination_dir(DIR *dest_dir, char *dest_folder)
Definition: dirent.h:9
static int fd(const char *x, int i)
Definition: preproc-init.c:105
#define PG_BINARY
Definition: c.h:1191
TimeLineID timeline
Definition: receivelog.h:33
WalWriteMethod * CreateWalDirectoryMethod(const char *basedir, int compression, bool sync)
Definition: walmethods.c:350
static void sigint_handler(int signum)
static bool slot_exists_ok
Definition: pg_receivewal.c:43
static void StreamLog(void)
void pg_usleep(long microsec)
Definition: signal.c:53
#define required_argument
Definition: getopt_long.h:25
int optind
Definition: getopt.c:50
Definition: dirent.c:25
#define IsXLogFileName(fname)
char * connection_string
Definition: streamutil.c:48
bool RetrieveWalSegSize(PGconn *conn)
Definition: streamutil.c:279
PGconn * conn
Definition: streamutil.c:56
#define MAXPGPATH
static XLogRecPtr endpos
Definition: pg_receivewal.c:48
DIR * opendir(const char *)
Definition: dirent.c:33
static int noloop
Definition: pg_receivewal.c:39
char * replication_slot
Definition: receivelog.h:49
bool mark_done
Definition: receivelog.h:38
#define XLogFromFileName(fname, tli, logSegNo, wal_segsz_bytes)
char * c
static char * buf
Definition: pg_test_fsync.c:68
uint64 XLogSegNo
Definition: xlogdefs.h:41
static XLogRecPtr FindStreamingStart(uint32 *tli)
static char * basedir
Definition: pg_receivewal.c:36
char * pg_strdup(const char *in)
Definition: fe_memutils.c:85
unsigned int uint32
Definition: c.h:358
static volatile bool time_to_stop
Definition: pg_receivewal.c:41
stream_stop_callback stream_stop
Definition: receivelog.h:42
static bool do_drop_slot
Definition: pg_receivewal.c:44
WalWriteMethod * walmethod
Definition: receivelog.h:47
#define XLogRecPtrIsInvalid(r)
Definition: xlogdefs.h:29
#define stat(a, b)
Definition: win32_port.h:255
int dbgetpassword
Definition: streamutil.c:53
#define no_argument
Definition: getopt_long.h:24
#define PG_TEXTDOMAIN(domain)
Definition: c.h:1135
#define PGINVALID_SOCKET
Definition: port.h:33
#define XLogSegmentOffset(xlogptr, wal_segsz_bytes)
char * dbport
Definition: streamutil.c:51
static void disconnect_atexit(void)
Definition: pg_receivewal.c:60
pqsigfunc pqsignal(int signum, pqsigfunc handler)
Definition: signal.c:170
static DIR * get_destination_dir(char *dest_folder)
PGconn * GetConnection(UserMapping *user, bool will_prep_stmt)
Definition: connection.c:107
#define XLogSegNoOffsetToRecPtr(segno, offset, wal_segsz_bytes, dest)
uint64 XLogRecPtr
Definition: xlogdefs.h:21
#define Assert(condition)
Definition: c.h:732
char * dbhost
Definition: streamutil.c:49
bool ReceiveXlogStream(PGconn *conn, StreamCtl *stream)
Definition: receivelog.c:439
#define RECONNECT_SLEEP_TIME
Definition: pg_receivewal.c:33
struct dirent * readdir(DIR *)
Definition: dirent.c:77
static int compresslevel
Definition: pg_receivewal.c:38
static bool do_create_slot
Definition: pg_receivewal.c:42
bool synchronous
Definition: receivelog.h:37
void pg_free(void *ptr)
Definition: fe_memutils.c:105
bool(* finish)(void)
Definition: walmethods.h:75
pgsocket stop_socket
Definition: receivelog.h:44
static void CreateReplicationSlot(CreateReplicationSlotCmd *cmd)
Definition: walsender.c:851
int WalSegSz
Definition: pg_standby.c:39
#define IsPartialXLogFileName(fname)
void set_pglocale_pgservice(const char *argv0, const char *app)
Definition: exec.c:565
char * dbuser
Definition: streamutil.c:50
char * optarg
Definition: getopt.c:52
static bool do_sync
Definition: pg_receivewal.c:45
int standby_message_timeout
Definition: receivelog.h:36
char d_name[MAX_PATH]
Definition: dirent.h:14
#define close(a)
Definition: win32.h:12
#define pg_log_warning(...)
Definition: pgfnames.c:24
static int verbose
Definition: pg_receivewal.c:37
#define snprintf
Definition: port.h:192
#define _(x)
Definition: elog.c:84
int pg_mode_mask
Definition: file_perm.c:25
#define read(a, b, c)
Definition: win32.h:13
#define IsCompressXLogFileName(fname)
Definition: pg_receivewal.c:67
#define pg_log_info(...)
Definition: logging.h:87
void FreeWalDirectoryMethod(void)
Definition: walmethods.c:374
bool CheckServerVersionForStreaming(PGconn *conn)
Definition: receivelog.c:361