load_manifest.h

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/*-------------------------------------------------------------------------
 *
 * Load data from a backup manifest into memory.
 *
 * Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/bin/pg_combinebackup/load_manifest.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef LOAD_MANIFEST_H
#define LOAD_MANIFEST_H
 
#include "access/xlogdefs.h"
#include "common/checksum_helper.h"
 
/*
 * Each file described by the manifest file is parsed to produce an object
 * like this.
 */
typedef struct manifest_file
{
    uint32      status;         /* hash status */
    char       *pathname;
    size_t      size;
    pg_checksum_type checksum_type;
    int         checksum_length;
    uint8      *checksum_payload;
} manifest_file;
 
#define SH_PREFIX       manifest_files
#define SH_ELEMENT_TYPE manifest_file
#define SH_KEY_TYPE     char *
#define SH_SCOPE        extern
#define SH_RAW_ALLOCATOR    pg_malloc0
#define SH_DECLARE
#include "lib/simplehash.h"
 
/*
 * Each WAL range described by the manifest file is parsed to produce an
 * object like this.
 */
typedef struct manifest_wal_range
{
    TimeLineID  tli;
    XLogRecPtr  start_lsn;
    XLogRecPtr  end_lsn;
    struct manifest_wal_range *next;
    struct manifest_wal_range *prev;
} manifest_wal_range;
 
/*
 * All the data parsed from a backup_manifest file.
 */
typedef struct manifest_data
{
    uint64      system_identifier;
    manifest_files_hash *files;
    manifest_wal_range *first_wal_range;
    manifest_wal_range *last_wal_range;
} manifest_data;
 
extern manifest_data *load_backup_manifest(char *backup_directory);
extern manifest_data **load_backup_manifests(int n_backups,
                                             char **backup_directories);
 
#endif                          /* LOAD_MANIFEST_H */