mirror of
https://github.com/openstreetmap/mod_tile.git
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e8001c859f
So far, (meta)tiles could only be stored and retrieved from a locally mounted posix filesystem. Although, the posix filesystem API is it self a plugable storage layer into which one can mount many different filsystems, from temporary filesystems to network filesystems, as mod_tile installations scale up to multi-server environments this might not be sufficient and one may want to use other storage layers. This patch therefore abstracts all storage calls out into a separate API that can be implemented by various storage backends to fit the needs of different installations. Three storage backends are included in this commit: - file backend: This is the equivalent of what existed before in mod_tile / renderd. This uses a posix filesystem to store (meta)tiles - memcached: This stores tiles in a memcached store - rados: This stores tiles in a rados / ceph cluster The memcached and rados backends should currently still be considered as experimental There are also other refactoring and cleanups in this commit
38 lines
968 B
C
38 lines
968 B
C
#ifndef DIR_UTILS_H
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#define DIR_UTILS_H
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#include <sys/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "render_config.h"
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/* Build parent directories for the specified file name
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* Note: the part following the trailing / is ignored
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* e.g. mkdirp("/a/b/foo.png") == shell mkdir -p /a/b
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*/
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int mkdirp(const char *path);
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/* File path hashing. Used by both mod_tile and render daemon
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* The two must both agree on the file layout for meta-tiling
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* to work
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*/
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void xyz_to_path(char *path, size_t len, const char *tile_dir, const char *xmlconfig, int x, int y, int z);
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int path_to_xyz(const char *tilepath, const char *path, char *xmlconfig, int *px, int *py, int *pz);
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#ifdef METATILE
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/* New meta-tile storage functions */
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/* Returns the path to the meta-tile and the offset within the meta-tile */
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int xyz_to_meta(char *path, size_t len, const char *tile_dir, const char *xmlconfig, int x, int y, int z);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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