dbasedesc.c

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/*-------------------------------------------------------------------------
 *
 * dbasedesc.c
 *    rmgr descriptor routines for commands/dbcommands.c
 *
 * Portions Copyright (c) 1996-2026, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 *
 * IDENTIFICATION
 *    src/backend/access/rmgrdesc/dbasedesc.c
 *
 *-------------------------------------------------------------------------
 */
#include "postgres.h"
 
#include "commands/dbcommands_xlog.h"
#include "lib/stringinfo.h"
 
 
void
dbase_desc(StringInfo buf, XLogReaderState *record)
{
    char       *rec = XLogRecGetData(record);
    uint8       info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
 
    if (info == XLOG_DBASE_CREATE_FILE_COPY)
    {
        xl_dbase_create_file_copy_rec *xlrec =
            (xl_dbase_create_file_copy_rec *) rec;
 
        appendStringInfo(buf, "copy dir %u/%u to %u/%u",
                         xlrec->src_tablespace_id, xlrec->src_db_id,
                         xlrec->tablespace_id, xlrec->db_id);
    }
    else if (info == XLOG_DBASE_CREATE_WAL_LOG)
    {
        xl_dbase_create_wal_log_rec *xlrec =
            (xl_dbase_create_wal_log_rec *) rec;
 
        appendStringInfo(buf, "create dir %u/%u",
                         xlrec->tablespace_id, xlrec->db_id);
    }
    else if (info == XLOG_DBASE_DROP)
    {
        xl_dbase_drop_rec *xlrec = (xl_dbase_drop_rec *) rec;
        int         i;
 
        appendStringInfoString(buf, "dir");
        for (i = 0; i < xlrec->ntablespaces; i++)
            appendStringInfo(buf, " %u/%u",
                             xlrec->tablespace_ids[i], xlrec->db_id);
    }
}
 
const char *
dbase_identify(uint8 info)
{
    const char *id = NULL;
 
    switch (info & ~XLR_INFO_MASK)
    {
        case XLOG_DBASE_CREATE_FILE_COPY:
            id = "CREATE_FILE_COPY";
            break;
        case XLOG_DBASE_CREATE_WAL_LOG:
            id = "CREATE_WAL_LOG";
            break;
        case XLOG_DBASE_DROP:
            id = "DROP";
            break;
    }
 
    return id;
}