File: store.h

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libapache2-mod-tile 0.8.1-1
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/*
 * Copyright (c) 2007 - 2023 by mod_tile contributors (see AUTHORS file)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; If not, see http://www.gnu.org/licenses/.
 */

#ifndef STORE_H
#define STORE_H

#ifdef __cplusplus
extern "C" {
#endif

#include "render_config.h"
#include <stdlib.h>
#include <sys/types.h>

struct stat_info {
	off_t size;   /* total size, in bytes */
	time_t atime; /* time of last access */
	time_t mtime; /* time of last modification */
	time_t ctime; /* time of last status change */
	int expired;  /* has the tile expired */
};

struct storage_backend {
	int (*tile_read)(struct storage_backend *store, const char *xmlconfig, const char *options, int x, int y, int z, char *buf, size_t sz, int *compressed, char *err_msg);
	struct stat_info(*tile_stat)(struct storage_backend *store, const char *xmlconfig, const char *options, int x, int y, int z);
	int (*metatile_write)(struct storage_backend *store, const char *xmlconfig, const char *options, int x, int y, int z, const char *buf, int sz);
	int (*metatile_delete)(struct storage_backend *store, const char *xmlconfig, int x, int y, int z);
	int (*metatile_expire)(struct storage_backend *store, const char *xmlconfig, int x, int y, int z);
	char *(*tile_storage_id)(struct storage_backend *store, const char *xmlconfig, const char *options, int x, int y, int z, char *string);
	int (*close_storage)(struct storage_backend *store);

	void *storage_ctx;
};

struct storage_backend *init_storage_backend(const char *options);

#ifdef __cplusplus
}
#endif
#endif