greenplumn appendonlydesc 源码
greenplumn appendonlydesc 代码
文件路径：/src/backend/access/rmgrdesc/appendonlydesc.c
/*-------------------------------------------------------------------------
*
* appendonlydesc.c
* rmgr descriptor routines for cdb/cdbappendonlystorage.c
*
* Portions Copyright (c) 2007-2009, Greenplum inc
* Portions Copyright (c) 2012-Present VMware, Inc. or its affiliates.
*
*
* IDENTIFICATION
* src/backend/access/rmgrdesc/appendonlydesc.c
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "cdb/cdbappendonlystorage_int.h"
#include "cdb/cdbappendonlystorage.h"
#include "cdb/cdbappendonlyxlog.h"
void
appendonly_desc(StringInfo buf, XLogReaderState *record)
{
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
switch (info)
{
case XLOG_APPENDONLY_INSERT:
{
xl_ao_insert *xlrec = (xl_ao_insert *)XLogRecGetData(record);
appendStringInfo(
buf,
"insert: rel %u/%u/%u seg/offset:%u/" INT64_FORMAT " len:%lu",
xlrec->target.node.spcNode, xlrec->target.node.dbNode,
xlrec->target.node.relNode, xlrec->target.segment_filenum,
xlrec->target.offset, XLogRecGetDataLen(record) - SizeOfAOInsert);
}
break;
case XLOG_APPENDONLY_TRUNCATE:
{
xl_ao_truncate *xlrec = (xl_ao_truncate *)XLogRecGetData(record);
appendStringInfo(
buf,
"truncate: rel %u/%u/%u seg/offset:%u/" INT64_FORMAT,
xlrec->target.node.spcNode, xlrec->target.node.dbNode,
xlrec->target.node.relNode, xlrec->target.segment_filenum,
xlrec->target.offset);
}
break;
default:
appendStringInfo(buf, "UNKNOWN");
}
}
const char *
appendonly_identify(uint8 info)
{
const char *id = NULL;
switch (info & ~XLR_INFO_MASK)
{
case XLOG_APPENDONLY_INSERT:
id = "APPENDONLY_INSERT";
break;
case XLOG_APPENDONLY_TRUNCATE:
id = "APPENDONLY_TRUNCATE";
break;
}
return id;
}
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