2013-02-22 20:46:24 +01:00
|
|
|
/*-------------------------------------------------------------------------
|
|
|
|
*
|
|
|
|
* pg_xlogdump.c - decode and display WAL
|
|
|
|
*
|
2014-01-07 22:05:30 +01:00
|
|
|
* Copyright (c) 2013-2014, PostgreSQL Global Development Group
|
2013-02-22 20:46:24 +01:00
|
|
|
*
|
|
|
|
* IDENTIFICATION
|
|
|
|
* contrib/pg_xlogdump/pg_xlogdump.c
|
|
|
|
*-------------------------------------------------------------------------
|
|
|
|
*/
|
|
|
|
|
|
|
|
#define FRONTEND 1
|
|
|
|
#include "postgres.h"
|
|
|
|
|
|
|
|
#include <dirent.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
|
|
|
|
#include "access/xlog.h"
|
|
|
|
#include "access/xlogreader.h"
|
|
|
|
#include "access/transam.h"
|
|
|
|
#include "common/fe_memutils.h"
|
|
|
|
#include "common/relpath.h"
|
|
|
|
#include "getopt_long.h"
|
|
|
|
#include "rmgrdesc.h"
|
|
|
|
|
|
|
|
|
|
|
|
static const char *progname;
|
|
|
|
|
|
|
|
typedef struct XLogDumpPrivate
|
|
|
|
{
|
|
|
|
TimeLineID timeline;
|
|
|
|
char *inpath;
|
|
|
|
XLogRecPtr startptr;
|
|
|
|
XLogRecPtr endptr;
|
2014-03-26 12:48:20 +01:00
|
|
|
bool endptr_reached;
|
2013-02-22 20:46:24 +01:00
|
|
|
} XLogDumpPrivate;
|
|
|
|
|
|
|
|
typedef struct XLogDumpConfig
|
|
|
|
{
|
|
|
|
/* display options */
|
|
|
|
bool bkp_details;
|
|
|
|
int stop_after_records;
|
|
|
|
int already_displayed_records;
|
2014-03-26 12:48:20 +01:00
|
|
|
bool follow;
|
2013-02-22 20:46:24 +01:00
|
|
|
|
|
|
|
/* filter options */
|
|
|
|
int filter_by_rmgr;
|
|
|
|
TransactionId filter_by_xid;
|
2013-02-22 21:03:22 +01:00
|
|
|
bool filter_by_xid_enabled;
|
2013-02-22 20:46:24 +01:00
|
|
|
} XLogDumpConfig;
|
|
|
|
|
|
|
|
static void
|
|
|
|
fatal_error(const char *fmt,...)
|
|
|
|
__attribute__((format(PG_PRINTF_ATTRIBUTE, 1, 2)));
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Big red button to push when things go horribly wrong.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
fatal_error(const char *fmt,...)
|
|
|
|
{
|
|
|
|
va_list args;
|
|
|
|
|
|
|
|
fflush(stdout);
|
|
|
|
|
|
|
|
fprintf(stderr, "%s: FATAL: ", progname);
|
|
|
|
va_start(args, fmt);
|
|
|
|
vfprintf(stderr, fmt, args);
|
|
|
|
va_end(args);
|
|
|
|
fputc('\n', stderr);
|
|
|
|
|
|
|
|
exit(EXIT_FAILURE);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
print_rmgr_list(void)
|
|
|
|
{
|
2013-05-29 22:58:43 +02:00
|
|
|
int i;
|
2013-02-22 20:46:24 +01:00
|
|
|
|
2013-06-04 17:51:43 +02:00
|
|
|
for (i = 0; i <= RM_MAX_ID; i++)
|
2013-02-22 20:46:24 +01:00
|
|
|
{
|
|
|
|
printf("%s\n", RmgrDescTable[i].rm_name);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check whether directory exists and whether we can open it. Keep errno set so
|
|
|
|
* that the caller can report errors somewhat more accurately.
|
|
|
|
*/
|
|
|
|
static bool
|
|
|
|
verify_directory(const char *directory)
|
|
|
|
{
|
2013-05-29 22:58:43 +02:00
|
|
|
DIR *dir = opendir(directory);
|
|
|
|
|
2013-02-22 20:46:24 +01:00
|
|
|
if (dir == NULL)
|
|
|
|
return false;
|
|
|
|
closedir(dir);
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Split a pathname as dirname(1) and basename(1) would.
|
|
|
|
*
|
|
|
|
* XXX this probably doesn't do very well on Windows. We probably need to
|
|
|
|
* apply canonicalize_path(), at the very least.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
split_path(const char *path, char **dir, char **fname)
|
|
|
|
{
|
|
|
|
char *sep;
|
|
|
|
|
|
|
|
/* split filepath into directory & filename */
|
|
|
|
sep = strrchr(path, '/');
|
|
|
|
|
|
|
|
/* directory path */
|
|
|
|
if (sep != NULL)
|
|
|
|
{
|
|
|
|
*dir = pg_strdup(path);
|
2013-05-29 22:58:43 +02:00
|
|
|
(*dir)[(sep - path) + 1] = '\0'; /* no strndup */
|
2013-02-22 20:46:24 +01:00
|
|
|
*fname = pg_strdup(sep + 1);
|
|
|
|
}
|
|
|
|
/* local directory */
|
|
|
|
else
|
|
|
|
{
|
|
|
|
*dir = NULL;
|
|
|
|
*fname = pg_strdup(path);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Try to find the file in several places:
|
|
|
|
* if directory == NULL:
|
|
|
|
* fname
|
|
|
|
* XLOGDIR / fname
|
|
|
|
* $PGDATA / XLOGDIR / fname
|
|
|
|
* else
|
|
|
|
* directory / fname
|
|
|
|
* directory / XLOGDIR / fname
|
|
|
|
*
|
|
|
|
* return a read only fd
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
fuzzy_open_file(const char *directory, const char *fname)
|
|
|
|
{
|
|
|
|
int fd = -1;
|
|
|
|
char fpath[MAXPGPATH];
|
|
|
|
|
|
|
|
if (directory == NULL)
|
|
|
|
{
|
|
|
|
const char *datadir;
|
|
|
|
|
|
|
|
/* fname */
|
|
|
|
fd = open(fname, O_RDONLY | PG_BINARY, 0);
|
|
|
|
if (fd < 0 && errno != ENOENT)
|
|
|
|
return -1;
|
|
|
|
else if (fd > 0)
|
|
|
|
return fd;
|
|
|
|
|
|
|
|
/* XLOGDIR / fname */
|
|
|
|
snprintf(fpath, MAXPGPATH, "%s/%s",
|
|
|
|
XLOGDIR, fname);
|
|
|
|
fd = open(fpath, O_RDONLY | PG_BINARY, 0);
|
|
|
|
if (fd < 0 && errno != ENOENT)
|
|
|
|
return -1;
|
|
|
|
else if (fd > 0)
|
|
|
|
return fd;
|
|
|
|
|
|
|
|
datadir = getenv("PGDATA");
|
|
|
|
/* $PGDATA / XLOGDIR / fname */
|
|
|
|
if (datadir != NULL)
|
|
|
|
{
|
|
|
|
snprintf(fpath, MAXPGPATH, "%s/%s/%s",
|
|
|
|
datadir, XLOGDIR, fname);
|
|
|
|
fd = open(fpath, O_RDONLY | PG_BINARY, 0);
|
|
|
|
if (fd < 0 && errno != ENOENT)
|
|
|
|
return -1;
|
|
|
|
else if (fd > 0)
|
|
|
|
return fd;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* directory / fname */
|
|
|
|
snprintf(fpath, MAXPGPATH, "%s/%s",
|
|
|
|
directory, fname);
|
|
|
|
fd = open(fpath, O_RDONLY | PG_BINARY, 0);
|
|
|
|
if (fd < 0 && errno != ENOENT)
|
|
|
|
return -1;
|
|
|
|
else if (fd > 0)
|
|
|
|
return fd;
|
|
|
|
|
|
|
|
/* directory / XLOGDIR / fname */
|
|
|
|
snprintf(fpath, MAXPGPATH, "%s/%s/%s",
|
|
|
|
directory, XLOGDIR, fname);
|
|
|
|
fd = open(fpath, O_RDONLY | PG_BINARY, 0);
|
|
|
|
if (fd < 0 && errno != ENOENT)
|
|
|
|
return -1;
|
|
|
|
else if (fd > 0)
|
|
|
|
return fd;
|
|
|
|
}
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Read count bytes from a segment file in the specified directory, for the
|
|
|
|
* given timeline, containing the specified record pointer; store the data in
|
|
|
|
* the passed buffer.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
XLogDumpXLogRead(const char *directory, TimeLineID timeline_id,
|
|
|
|
XLogRecPtr startptr, char *buf, Size count)
|
|
|
|
{
|
|
|
|
char *p;
|
|
|
|
XLogRecPtr recptr;
|
|
|
|
Size nbytes;
|
|
|
|
|
|
|
|
static int sendFile = -1;
|
|
|
|
static XLogSegNo sendSegNo = 0;
|
|
|
|
static uint32 sendOff = 0;
|
|
|
|
|
|
|
|
p = buf;
|
|
|
|
recptr = startptr;
|
|
|
|
nbytes = count;
|
|
|
|
|
|
|
|
while (nbytes > 0)
|
|
|
|
{
|
|
|
|
uint32 startoff;
|
|
|
|
int segbytes;
|
|
|
|
int readbytes;
|
|
|
|
|
|
|
|
startoff = recptr % XLogSegSize;
|
|
|
|
|
|
|
|
if (sendFile < 0 || !XLByteInSeg(recptr, sendSegNo))
|
|
|
|
{
|
|
|
|
char fname[MAXFNAMELEN];
|
|
|
|
|
|
|
|
/* Switch to another logfile segment */
|
|
|
|
if (sendFile >= 0)
|
|
|
|
close(sendFile);
|
|
|
|
|
|
|
|
XLByteToSeg(recptr, sendSegNo);
|
|
|
|
|
|
|
|
XLogFileName(fname, timeline_id, sendSegNo);
|
|
|
|
|
|
|
|
sendFile = fuzzy_open_file(directory, fname);
|
|
|
|
|
|
|
|
if (sendFile < 0)
|
|
|
|
fatal_error("could not find file \"%s\": %s",
|
|
|
|
fname, strerror(errno));
|
|
|
|
sendOff = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Need to seek in the file? */
|
|
|
|
if (sendOff != startoff)
|
|
|
|
{
|
|
|
|
if (lseek(sendFile, (off_t) startoff, SEEK_SET) < 0)
|
|
|
|
{
|
|
|
|
int err = errno;
|
|
|
|
char fname[MAXPGPATH];
|
|
|
|
|
|
|
|
XLogFileName(fname, timeline_id, sendSegNo);
|
|
|
|
|
|
|
|
fatal_error("could not seek in log segment %s to offset %u: %s",
|
|
|
|
fname, startoff, strerror(err));
|
|
|
|
}
|
|
|
|
sendOff = startoff;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* How many bytes are within this segment? */
|
|
|
|
if (nbytes > (XLogSegSize - startoff))
|
|
|
|
segbytes = XLogSegSize - startoff;
|
|
|
|
else
|
|
|
|
segbytes = nbytes;
|
|
|
|
|
|
|
|
readbytes = read(sendFile, p, segbytes);
|
|
|
|
if (readbytes <= 0)
|
|
|
|
{
|
|
|
|
int err = errno;
|
|
|
|
char fname[MAXPGPATH];
|
|
|
|
|
|
|
|
XLogFileName(fname, timeline_id, sendSegNo);
|
|
|
|
|
|
|
|
fatal_error("could not read from log segment %s, offset %d, length %d: %s",
|
|
|
|
fname, sendOff, segbytes, strerror(err));
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Update state for read */
|
|
|
|
recptr += readbytes;
|
|
|
|
|
|
|
|
sendOff += readbytes;
|
|
|
|
nbytes -= readbytes;
|
|
|
|
p += readbytes;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* XLogReader read_page callback
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
XLogDumpReadPage(XLogReaderState *state, XLogRecPtr targetPagePtr, int reqLen,
|
|
|
|
XLogRecPtr targetPtr, char *readBuff, TimeLineID *curFileTLI)
|
|
|
|
{
|
|
|
|
XLogDumpPrivate *private = state->private_data;
|
|
|
|
int count = XLOG_BLCKSZ;
|
|
|
|
|
|
|
|
if (private->endptr != InvalidXLogRecPtr)
|
|
|
|
{
|
|
|
|
if (targetPagePtr + XLOG_BLCKSZ <= private->endptr)
|
|
|
|
count = XLOG_BLCKSZ;
|
|
|
|
else if (targetPagePtr + reqLen <= private->endptr)
|
|
|
|
count = private->endptr - targetPagePtr;
|
|
|
|
else
|
2014-03-26 12:48:20 +01:00
|
|
|
{
|
|
|
|
private->endptr_reached = true;
|
2013-02-22 20:46:24 +01:00
|
|
|
return -1;
|
2014-03-26 12:48:20 +01:00
|
|
|
}
|
2013-02-22 20:46:24 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
XLogDumpXLogRead(private->inpath, private->timeline, targetPagePtr,
|
|
|
|
readBuff, count);
|
|
|
|
|
|
|
|
return count;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Print a record to stdout
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
XLogDumpDisplayRecord(XLogDumpConfig *config, XLogRecPtr ReadRecPtr, XLogRecord *record)
|
|
|
|
{
|
|
|
|
const RmgrDescData *desc = &RmgrDescTable[record->xl_rmid];
|
|
|
|
|
|
|
|
if (config->filter_by_rmgr != -1 &&
|
|
|
|
config->filter_by_rmgr != record->xl_rmid)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (config->filter_by_xid_enabled &&
|
|
|
|
config->filter_by_xid != record->xl_xid)
|
|
|
|
return;
|
|
|
|
|
|
|
|
config->already_displayed_records++;
|
|
|
|
|
|
|
|
printf("rmgr: %-11s len (rec/tot): %6u/%6u, tx: %10u, lsn: %X/%08X, prev %X/%08X, bkp: %u%u%u%u, desc: ",
|
|
|
|
desc->rm_name,
|
|
|
|
record->xl_len, record->xl_tot_len,
|
|
|
|
record->xl_xid,
|
|
|
|
(uint32) (ReadRecPtr >> 32), (uint32) ReadRecPtr,
|
|
|
|
(uint32) (record->xl_prev >> 32), (uint32) record->xl_prev,
|
|
|
|
!!(XLR_BKP_BLOCK(0) & record->xl_info),
|
|
|
|
!!(XLR_BKP_BLOCK(1) & record->xl_info),
|
|
|
|
!!(XLR_BKP_BLOCK(2) & record->xl_info),
|
|
|
|
!!(XLR_BKP_BLOCK(3) & record->xl_info));
|
|
|
|
|
|
|
|
/* the desc routine will printf the description directly to stdout */
|
|
|
|
desc->rm_desc(NULL, record->xl_info, XLogRecGetData(record));
|
|
|
|
|
|
|
|
putchar('\n');
|
|
|
|
|
|
|
|
if (config->bkp_details)
|
|
|
|
{
|
|
|
|
int bkpnum;
|
|
|
|
char *blk = (char *) XLogRecGetData(record) + record->xl_len;
|
|
|
|
|
|
|
|
for (bkpnum = 0; bkpnum < XLR_MAX_BKP_BLOCKS; bkpnum++)
|
|
|
|
{
|
|
|
|
BkpBlock bkpb;
|
|
|
|
|
|
|
|
if (!(XLR_BKP_BLOCK(bkpnum) & record->xl_info))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
memcpy(&bkpb, blk, sizeof(BkpBlock));
|
|
|
|
blk += sizeof(BkpBlock);
|
|
|
|
blk += BLCKSZ - bkpb.hole_length;
|
|
|
|
|
|
|
|
printf("\tbackup bkp #%u; rel %u/%u/%u; fork: %s; block: %u; hole: offset: %u, length: %u\n",
|
|
|
|
bkpnum,
|
|
|
|
bkpb.node.spcNode, bkpb.node.dbNode, bkpb.node.relNode,
|
|
|
|
forkNames[bkpb.fork],
|
|
|
|
bkpb.block, bkpb.hole_offset, bkpb.hole_length);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
usage(void)
|
|
|
|
{
|
|
|
|
printf("%s decodes and displays PostgreSQL transaction logs for debugging.\n\n",
|
|
|
|
progname);
|
|
|
|
printf("Usage:\n");
|
2013-05-12 03:55:37 +02:00
|
|
|
printf(" %s [OPTION]... [STARTSEG [ENDSEG]] \n", progname);
|
|
|
|
printf("\nOptions:\n");
|
2013-02-22 20:46:24 +01:00
|
|
|
printf(" -b, --bkp-details output detailed information about backup blocks\n");
|
|
|
|
printf(" -e, --end=RECPTR stop reading at log position RECPTR\n");
|
2014-03-26 12:48:20 +01:00
|
|
|
printf(" -f, --follow keep retrying after reaching end of WAL\n");
|
2013-02-22 20:46:24 +01:00
|
|
|
printf(" -n, --limit=N number of records to display\n");
|
|
|
|
printf(" -p, --path=PATH directory in which to find log segment files\n");
|
|
|
|
printf(" (default: ./pg_xlog)\n");
|
|
|
|
printf(" -r, --rmgr=RMGR only show records generated by resource manager RMGR\n");
|
|
|
|
printf(" use --rmgr=list to list valid resource manager names\n");
|
2013-02-27 20:27:01 +01:00
|
|
|
printf(" -s, --start=RECPTR start reading at log position RECPTR\n");
|
2013-02-22 20:46:24 +01:00
|
|
|
printf(" -t, --timeline=TLI timeline from which to read log records\n");
|
|
|
|
printf(" (default: 1 or the value used in STARTSEG)\n");
|
2013-05-12 03:55:37 +02:00
|
|
|
printf(" -V, --version output version information, then exit\n");
|
2013-02-22 20:46:24 +01:00
|
|
|
printf(" -x, --xid=XID only show records with TransactionId XID\n");
|
2013-05-12 03:55:37 +02:00
|
|
|
printf(" -?, --help show this help, then exit\n");
|
2013-02-22 20:46:24 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
main(int argc, char **argv)
|
|
|
|
{
|
|
|
|
uint32 xlogid;
|
|
|
|
uint32 xrecoff;
|
|
|
|
XLogReaderState *xlogreader_state;
|
|
|
|
XLogDumpPrivate private;
|
|
|
|
XLogDumpConfig config;
|
|
|
|
XLogRecord *record;
|
|
|
|
XLogRecPtr first_record;
|
|
|
|
char *errormsg;
|
|
|
|
|
|
|
|
static struct option long_options[] = {
|
|
|
|
{"bkp-details", no_argument, NULL, 'b'},
|
|
|
|
{"end", required_argument, NULL, 'e'},
|
2014-03-26 12:48:20 +01:00
|
|
|
{"follow", no_argument, NULL, 'f'},
|
2013-02-22 20:46:24 +01:00
|
|
|
{"help", no_argument, NULL, '?'},
|
|
|
|
{"limit", required_argument, NULL, 'n'},
|
|
|
|
{"path", required_argument, NULL, 'p'},
|
|
|
|
{"rmgr", required_argument, NULL, 'r'},
|
|
|
|
{"start", required_argument, NULL, 's'},
|
|
|
|
{"timeline", required_argument, NULL, 't'},
|
|
|
|
{"xid", required_argument, NULL, 'x'},
|
|
|
|
{"version", no_argument, NULL, 'V'},
|
|
|
|
{NULL, 0, NULL, 0}
|
|
|
|
};
|
|
|
|
|
|
|
|
int option;
|
|
|
|
int optindex = 0;
|
|
|
|
|
|
|
|
progname = get_progname(argv[0]);
|
|
|
|
|
|
|
|
memset(&private, 0, sizeof(XLogDumpPrivate));
|
|
|
|
memset(&config, 0, sizeof(XLogDumpConfig));
|
|
|
|
|
|
|
|
private.timeline = 1;
|
|
|
|
private.startptr = InvalidXLogRecPtr;
|
|
|
|
private.endptr = InvalidXLogRecPtr;
|
2014-03-26 12:48:20 +01:00
|
|
|
private.endptr_reached = false;
|
2013-02-22 20:46:24 +01:00
|
|
|
|
|
|
|
config.bkp_details = false;
|
|
|
|
config.stop_after_records = -1;
|
|
|
|
config.already_displayed_records = 0;
|
2014-03-26 12:48:20 +01:00
|
|
|
config.follow = false;
|
2013-02-22 20:46:24 +01:00
|
|
|
config.filter_by_rmgr = -1;
|
|
|
|
config.filter_by_xid = InvalidTransactionId;
|
|
|
|
config.filter_by_xid_enabled = false;
|
|
|
|
|
|
|
|
if (argc <= 1)
|
|
|
|
{
|
|
|
|
fprintf(stderr, "%s: no arguments specified\n", progname);
|
|
|
|
goto bad_argument;
|
|
|
|
}
|
|
|
|
|
2014-03-26 12:48:20 +01:00
|
|
|
while ((option = getopt_long(argc, argv, "be:?fn:p:r:s:t:Vx:",
|
2013-02-22 20:46:24 +01:00
|
|
|
long_options, &optindex)) != -1)
|
|
|
|
{
|
|
|
|
switch (option)
|
|
|
|
{
|
|
|
|
case 'b':
|
|
|
|
config.bkp_details = true;
|
|
|
|
break;
|
|
|
|
case 'e':
|
|
|
|
if (sscanf(optarg, "%X/%X", &xlogid, &xrecoff) != 2)
|
|
|
|
{
|
|
|
|
fprintf(stderr, "%s: could not parse end log position \"%s\"\n",
|
|
|
|
progname, optarg);
|
|
|
|
goto bad_argument;
|
|
|
|
}
|
|
|
|
private.endptr = (uint64) xlogid << 32 | xrecoff;
|
|
|
|
break;
|
2014-03-26 12:48:20 +01:00
|
|
|
case 'f':
|
|
|
|
config.follow = true;
|
|
|
|
break;
|
2013-02-22 20:46:24 +01:00
|
|
|
case '?':
|
|
|
|
usage();
|
|
|
|
exit(EXIT_SUCCESS);
|
|
|
|
break;
|
|
|
|
case 'n':
|
|
|
|
if (sscanf(optarg, "%d", &config.stop_after_records) != 1)
|
|
|
|
{
|
|
|
|
fprintf(stderr, "%s: could not parse limit \"%s\"\n",
|
|
|
|
progname, optarg);
|
|
|
|
goto bad_argument;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case 'p':
|
|
|
|
private.inpath = pg_strdup(optarg);
|
|
|
|
break;
|
|
|
|
case 'r':
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
if (pg_strcasecmp(optarg, "list") == 0)
|
|
|
|
{
|
|
|
|
print_rmgr_list();
|
|
|
|
exit(EXIT_SUCCESS);
|
|
|
|
}
|
|
|
|
|
2013-06-04 17:51:43 +02:00
|
|
|
for (i = 0; i <= RM_MAX_ID; i++)
|
2013-02-22 20:46:24 +01:00
|
|
|
{
|
|
|
|
if (pg_strcasecmp(optarg, RmgrDescTable[i].rm_name) == 0)
|
|
|
|
{
|
|
|
|
config.filter_by_rmgr = i;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (config.filter_by_rmgr == -1)
|
|
|
|
{
|
|
|
|
fprintf(stderr, "%s: resource manager \"%s\" does not exist\n",
|
|
|
|
progname, optarg);
|
|
|
|
goto bad_argument;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case 's':
|
|
|
|
if (sscanf(optarg, "%X/%X", &xlogid, &xrecoff) != 2)
|
|
|
|
{
|
2013-02-27 20:27:01 +01:00
|
|
|
fprintf(stderr, "%s: could not parse start log position \"%s\"\n",
|
2013-02-22 20:46:24 +01:00
|
|
|
progname, optarg);
|
|
|
|
goto bad_argument;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
private.startptr = (uint64) xlogid << 32 | xrecoff;
|
|
|
|
break;
|
|
|
|
case 't':
|
|
|
|
if (sscanf(optarg, "%d", &private.timeline) != 1)
|
|
|
|
{
|
|
|
|
fprintf(stderr, "%s: could not parse timeline \"%s\"\n",
|
|
|
|
progname, optarg);
|
|
|
|
goto bad_argument;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case 'V':
|
|
|
|
puts("pg_xlogdump (PostgreSQL) " PG_VERSION);
|
|
|
|
exit(EXIT_SUCCESS);
|
|
|
|
break;
|
|
|
|
case 'x':
|
|
|
|
if (sscanf(optarg, "%u", &config.filter_by_xid) != 1)
|
|
|
|
{
|
|
|
|
fprintf(stderr, "%s: could not parse \"%s\" as a valid xid\n",
|
|
|
|
progname, optarg);
|
|
|
|
goto bad_argument;
|
|
|
|
}
|
|
|
|
config.filter_by_xid_enabled = true;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
goto bad_argument;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((optind + 2) < argc)
|
|
|
|
{
|
|
|
|
fprintf(stderr,
|
|
|
|
"%s: too many command-line arguments (first is \"%s\")\n",
|
|
|
|
progname, argv[optind + 2]);
|
|
|
|
goto bad_argument;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (private.inpath != NULL)
|
|
|
|
{
|
|
|
|
/* validate path points to directory */
|
|
|
|
if (!verify_directory(private.inpath))
|
|
|
|
{
|
|
|
|
fprintf(stderr,
|
|
|
|
"%s: path \"%s\" cannot be opened: %s",
|
|
|
|
progname, private.inpath, strerror(errno));
|
|
|
|
goto bad_argument;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* parse files as start/end boundaries, extract path if not specified */
|
|
|
|
if (optind < argc)
|
|
|
|
{
|
|
|
|
char *directory = NULL;
|
|
|
|
char *fname = NULL;
|
|
|
|
int fd;
|
|
|
|
XLogSegNo segno;
|
|
|
|
|
|
|
|
split_path(argv[optind], &directory, &fname);
|
|
|
|
|
|
|
|
if (private.inpath == NULL && directory != NULL)
|
|
|
|
{
|
|
|
|
private.inpath = directory;
|
|
|
|
|
|
|
|
if (!verify_directory(private.inpath))
|
|
|
|
fatal_error("cannot open directory \"%s\": %s",
|
|
|
|
private.inpath, strerror(errno));
|
|
|
|
}
|
|
|
|
|
|
|
|
fd = fuzzy_open_file(private.inpath, fname);
|
|
|
|
if (fd < 0)
|
|
|
|
fatal_error("could not open file \"%s\"", fname);
|
|
|
|
close(fd);
|
|
|
|
|
|
|
|
/* parse position from file */
|
|
|
|
XLogFromFileName(fname, &private.timeline, &segno);
|
|
|
|
|
|
|
|
if (XLogRecPtrIsInvalid(private.startptr))
|
|
|
|
XLogSegNoOffsetToRecPtr(segno, 0, private.startptr);
|
|
|
|
else if (!XLByteInSeg(private.startptr, segno))
|
|
|
|
{
|
|
|
|
fprintf(stderr,
|
2013-05-29 22:58:43 +02:00
|
|
|
"%s: start log position %X/%X is not inside file \"%s\"\n",
|
2013-02-22 20:46:24 +01:00
|
|
|
progname,
|
|
|
|
(uint32) (private.startptr >> 32),
|
|
|
|
(uint32) private.startptr,
|
|
|
|
fname);
|
|
|
|
goto bad_argument;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* no second file specified, set end position */
|
|
|
|
if (!(optind + 1 < argc) && XLogRecPtrIsInvalid(private.endptr))
|
|
|
|
XLogSegNoOffsetToRecPtr(segno + 1, 0, private.endptr);
|
|
|
|
|
|
|
|
/* parse ENDSEG if passed */
|
|
|
|
if (optind + 1 < argc)
|
|
|
|
{
|
|
|
|
XLogSegNo endsegno;
|
|
|
|
|
|
|
|
/* ignore directory, already have that */
|
|
|
|
split_path(argv[optind + 1], &directory, &fname);
|
|
|
|
|
|
|
|
fd = fuzzy_open_file(private.inpath, fname);
|
|
|
|
if (fd < 0)
|
|
|
|
fatal_error("could not open file \"%s\"", fname);
|
|
|
|
close(fd);
|
|
|
|
|
|
|
|
/* parse position from file */
|
|
|
|
XLogFromFileName(fname, &private.timeline, &endsegno);
|
|
|
|
|
|
|
|
if (endsegno < segno)
|
|
|
|
fatal_error("ENDSEG %s is before STARTSEG %s",
|
|
|
|
argv[optind + 1], argv[optind]);
|
|
|
|
|
|
|
|
if (XLogRecPtrIsInvalid(private.endptr))
|
|
|
|
XLogSegNoOffsetToRecPtr(endsegno + 1, 0, private.endptr);
|
|
|
|
|
|
|
|
/* set segno to endsegno for check of --end */
|
|
|
|
segno = endsegno;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (!XLByteInSeg(private.endptr, segno) &&
|
|
|
|
private.endptr != (segno + 1) * XLogSegSize)
|
|
|
|
{
|
|
|
|
fprintf(stderr,
|
|
|
|
"%s: end log position %X/%X is not inside file \"%s\"\n",
|
|
|
|
progname,
|
|
|
|
(uint32) (private.endptr >> 32),
|
|
|
|
(uint32) private.endptr,
|
|
|
|
argv[argc - 1]);
|
|
|
|
goto bad_argument;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* we don't know what to print */
|
|
|
|
if (XLogRecPtrIsInvalid(private.startptr))
|
|
|
|
{
|
|
|
|
fprintf(stderr, "%s: no start log position given in range mode.\n", progname);
|
|
|
|
goto bad_argument;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* done with argument parsing, do the actual work */
|
|
|
|
|
|
|
|
/* we have everything we need, start reading */
|
|
|
|
xlogreader_state = XLogReaderAllocate(XLogDumpReadPage, &private);
|
|
|
|
if (!xlogreader_state)
|
|
|
|
fatal_error("out of memory");
|
|
|
|
|
|
|
|
/* first find a valid recptr to start from */
|
|
|
|
first_record = XLogFindNextRecord(xlogreader_state, private.startptr);
|
|
|
|
|
|
|
|
if (first_record == InvalidXLogRecPtr)
|
|
|
|
fatal_error("could not find a valid record after %X/%X",
|
|
|
|
(uint32) (private.startptr >> 32),
|
|
|
|
(uint32) private.startptr);
|
|
|
|
|
|
|
|
/*
|
2013-05-29 22:58:43 +02:00
|
|
|
* Display a message that we're skipping data if `from` wasn't a pointer
|
|
|
|
* to the start of a record and also wasn't a pointer to the beginning of
|
|
|
|
* a segment (e.g. we were used in file mode).
|
2013-02-22 20:46:24 +01:00
|
|
|
*/
|
|
|
|
if (first_record != private.startptr && (private.startptr % XLogSegSize) != 0)
|
|
|
|
printf("first record is after %X/%X, at %X/%X, skipping over %u bytes\n",
|
|
|
|
(uint32) (private.startptr >> 32), (uint32) private.startptr,
|
|
|
|
(uint32) (first_record >> 32), (uint32) first_record,
|
|
|
|
(uint32) (first_record - private.startptr));
|
|
|
|
|
2014-03-26 12:48:20 +01:00
|
|
|
for (;;)
|
2013-02-22 20:46:24 +01:00
|
|
|
{
|
2014-03-26 12:48:20 +01:00
|
|
|
/* try to read the next record */
|
|
|
|
record = XLogReadRecord(xlogreader_state, first_record, &errormsg);
|
|
|
|
if (!record)
|
|
|
|
{
|
|
|
|
if (!config.follow || private.endptr_reached)
|
|
|
|
break;
|
|
|
|
else
|
|
|
|
{
|
|
|
|
sleep(1);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* after reading the first record, continue at next one */
|
2013-02-22 20:46:24 +01:00
|
|
|
first_record = InvalidXLogRecPtr;
|
|
|
|
XLogDumpDisplayRecord(&config, xlogreader_state->ReadRecPtr, record);
|
|
|
|
|
|
|
|
/* check whether we printed enough */
|
|
|
|
if (config.stop_after_records > 0 &&
|
|
|
|
config.already_displayed_records >= config.stop_after_records)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (errormsg)
|
|
|
|
fatal_error("error in WAL record at %X/%X: %s\n",
|
|
|
|
(uint32) (xlogreader_state->ReadRecPtr >> 32),
|
|
|
|
(uint32) xlogreader_state->ReadRecPtr,
|
|
|
|
errormsg);
|
|
|
|
|
|
|
|
XLogReaderFree(xlogreader_state);
|
|
|
|
|
|
|
|
return EXIT_SUCCESS;
|
|
|
|
|
|
|
|
bad_argument:
|
|
|
|
fprintf(stderr, "Try \"%s --help\" for more information.\n", progname);
|
|
|
|
return EXIT_FAILURE;
|
|
|
|
}
|