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/*-------------------------------------------------------------------------
*
* backup_compression.h
*
* Shared definitions for backup compression methods and specifications.
*
* Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
*
* IDENTIFICATION
* src/common/backup_compression.h
*-------------------------------------------------------------------------
*/
#ifndef BACKUP_COMPRESSION_H
#define BACKUP_COMPRESSION_H
typedef enum bc_algorithm
{
BACKUP_COMPRESSION_NONE,
BACKUP_COMPRESSION_GZIP,
BACKUP_COMPRESSION_LZ4,
BACKUP_COMPRESSION_ZSTD
} bc_algorithm;
#define BACKUP_COMPRESSION_OPTION_LEVEL (1 << 0)
#define BACKUP_COMPRESSION_OPTION_WORKERS (1 << 1)
typedef struct bc_specification
{
bc_algorithm algorithm;
unsigned options; /* OR of BACKUP_COMPRESSION_OPTION constants */
int level;
int workers;
char *parse_error; /* NULL if parsing was OK, else message */
} bc_specification;
extern bool parse_bc_algorithm(char *name, bc_algorithm *algorithm);
extern const char *get_bc_algorithm_name(bc_algorithm algorithm);
extern void parse_bc_specification(bc_algorithm algorithm,
char *specification,
bc_specification *result);
extern char *validate_bc_specification(bc_specification *);
#endif
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