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Split off functions related to timeline history files and XLOG archiving.

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This is just refactoring, to make the functions accessible outside xlog.c.
A followup patch will make use of that, to allow fetching timeline history
files over streaming replication.
This commit is contained in:
Heikki Linnakangas
2012-10-02 13:37:19 +03:00
parent 0899556e92
commit d5497b95f3
6 changed files with 1058 additions and 929 deletions
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23
src/include/access/timeline.h Normal file
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@@ -0,0 +1,23 @@
/*
* timeline.h
*
* Functions for reading and writing timeline history files.
*
* Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/access/timeline.h
*/
#ifndef TIMELINE_H
#define TIMELINE_H
#include "access/xlogdefs.h"
#include "nodes/pg_list.h"
extern List *readTimeLineHistory(TimeLineID targetTLI);
extern bool existsTimeLineHistory(TimeLineID probeTLI);
extern TimeLineID findNewestTimeLine(TimeLineID startTLI);
extern void writeTimeLineHistory(TimeLineID newTLI, TimeLineID parentTLI,
TimeLineID endTLI, XLogSegNo endLogSegNo, char *reason);
#endif /* TIMELINE_H */

23
src/include/access/xlog_internal.h
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@@ -229,6 +229,29 @@ extern const RmgrData RmgrTable[];
extern pg_time_t GetLastSegSwitchTime(void);
extern XLogRecPtr RequestXLogSwitch(void);
extern void GetOldestRestartPoint(XLogRecPtr *oldrecptr, TimeLineID *oldtli);
/*
* Exported for the functions in timeline.c and xlogarchive.c. Only valid
* in the startup process.
*/
extern bool InArchiveRecovery;
extern bool StandbyMode;
extern char *recoveryRestoreCommand;
/*
* Prototypes for functions in xlogarchive.c
*/
extern bool RestoreArchivedFile(char *path, const char *xlogfname,
const char *recovername, off_t expectedSize);
extern void ExecuteRecoveryCommand(char *command, char *commandName,
bool failOnerror);
extern void XLogArchiveNotify(const char *xlog);
extern void XLogArchiveNotifySeg(XLogSegNo segno);
extern bool XLogArchiveCheckDone(const char *xlog);
extern bool XLogArchiveIsBusy(const char *xlog);
extern void XLogArchiveCleanup(const char *xlog);
/*
* These aren't in xlog.h because I'd rather not include fmgr.h there.
*/