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/*-------------------------------------------------------------------------
*
* archive_module.h
* Exports for archive modules.
*
* Copyright (c) 2022-2023, PostgreSQL Global Development Group
*
* src/include/archive/archive_module.h
*
*-------------------------------------------------------------------------
*/
#ifndef _ARCHIVE_MODULE_H
#define _ARCHIVE_MODULE_H
/*
* The value of the archive_library GUC.
*/
extern PGDLLIMPORT char *XLogArchiveLibrary;
typedef struct ArchiveModuleState
{
/*
* Private data pointer for use by an archive module. This can be used to
* store state for the module that will be passed to each of its
* callbacks.
*/
void *private_data;
} ArchiveModuleState;
/*
* Archive module callbacks
*
* These callback functions should be defined by archive libraries and returned
* via _PG_archive_module_init(). ArchiveFileCB is the only required callback.
* For more information about the purpose of each callback, refer to the
* archive modules documentation.
*/
typedef void (*ArchiveStartupCB) (ArchiveModuleState *state);
typedef bool (*ArchiveCheckConfiguredCB) (ArchiveModuleState *state);
typedef bool (*ArchiveFileCB) (ArchiveModuleState *state, const char *file, const char *path);
typedef void (*ArchiveShutdownCB) (ArchiveModuleState *state);
typedef struct ArchiveModuleCallbacks
{
ArchiveStartupCB startup_cb;
ArchiveCheckConfiguredCB check_configured_cb;
ArchiveFileCB archive_file_cb;
ArchiveShutdownCB shutdown_cb;
} ArchiveModuleCallbacks;
/*
* Type of the shared library symbol _PG_archive_module_init that is looked
* up when loading an archive library.
*/
typedef const ArchiveModuleCallbacks *(*ArchiveModuleInit) (void);
extern PGDLLEXPORT const ArchiveModuleCallbacks *_PG_archive_module_init(void);
#endif /* _ARCHIVE_MODULE_H */
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