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/*-------------------------------------------------------------------------
*
* xlogbackup.c
* Internal routines for base backups.
*
* Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* src/backend/access/transam/xlogbackup.c
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "access/xlog.h"
#include "access/xlog_internal.h"
#include "access/xlogbackup.h"
/*
* Build contents for backup_label or backup history file.
*
* When ishistoryfile is true, it creates the contents for a backup history
* file, otherwise it creates contents for a backup_label file.
*
* Returns the result generated as a palloc'd string.
*/
char *
build_backup_content(BackupState *state, bool ishistoryfile)
{
char startstrbuf[128];
char startxlogfile[MAXFNAMELEN]; /* backup start WAL file */
XLogSegNo startsegno;
StringInfo result = makeStringInfo();
char *data;
Assert(state != NULL);
/* Use the log timezone here, not the session timezone */
pg_strftime(startstrbuf, sizeof(startstrbuf), "%Y-%m-%d %H:%M:%S %Z",
pg_localtime(&state->starttime, log_timezone));
XLByteToSeg(state->startpoint, startsegno, wal_segment_size);
XLogFileName(startxlogfile, state->starttli, startsegno, wal_segment_size);
appendStringInfo(result, "START WAL LOCATION: %X/%X (file %s)\n",
LSN_FORMAT_ARGS(state->startpoint), startxlogfile);
if (ishistoryfile)
{
char stopxlogfile[MAXFNAMELEN]; /* backup stop WAL file */
XLogSegNo stopsegno;
XLByteToSeg(state->stoppoint, stopsegno, wal_segment_size);
XLogFileName(stopxlogfile, state->stoptli, stopsegno, wal_segment_size);
appendStringInfo(result, "STOP WAL LOCATION: %X/%X (file %s)\n",
LSN_FORMAT_ARGS(state->stoppoint), stopxlogfile);
}
appendStringInfo(result, "CHECKPOINT LOCATION: %X/%X\n",
LSN_FORMAT_ARGS(state->checkpointloc));
appendStringInfo(result, "BACKUP METHOD: streamed\n");
appendStringInfo(result, "BACKUP FROM: %s\n",
state->started_in_recovery ? "standby" : "primary");
appendStringInfo(result, "START TIME: %s\n", startstrbuf);
appendStringInfo(result, "LABEL: %s\n", state->name);
appendStringInfo(result, "START TIMELINE: %u\n", state->starttli);
if (ishistoryfile)
{
char stopstrfbuf[128];
/* Use the log timezone here, not the session timezone */
pg_strftime(stopstrfbuf, sizeof(stopstrfbuf), "%Y-%m-%d %H:%M:%S %Z",
pg_localtime(&state->stoptime, log_timezone));
appendStringInfo(result, "STOP TIME: %s\n", stopstrfbuf);
appendStringInfo(result, "STOP TIMELINE: %u\n", state->stoptli);
}
data = result->data;
pfree(result);
return data;
}
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