LMDB cache backend (#293)

Author: marisn

CMakeLists.txt

@@ -90,6 +90,7 @@ option(WITH_PIXMAN "Use pixman for SSE optimized image manipulations" ON)
 option(WITH_SQLITE "Use sqlite as a cache/dimension backend" ON)
 option(WITH_POSTGRESQL "Use PostgreSQL as a dimension backend" OFF)
 option(WITH_BERKELEY_DB "Use Berkeley DB as a cache backend" OFF)
+option(WITH_LMDB "Use LMDB as a cache backend" OFF)
 option(WITH_MEMCACHE "Use memcache as a cache backend (requires recent apr-util)" OFF)
 option(WITH_REDIS "Use redis as a cache backend (requires hiredis library)" OFF)
 option(WITH_TIFF "Use TIFFs as a cache backend" OFF)
@@ -240,6 +241,20 @@ if(WITH_BERKELEY_DB)
   endif(BERKELEYDB_FOUND)
 endif (WITH_BERKELEY_DB)
 
+if(WITH_LMDB)
+  if(NOT LMDB_FIND_VERSION)
+    set(LMDB_FIND_VERSION "0.9.10")
+  endif(NOT LMDB_FIND_VERSION)
+  find_package(LMDB)
+  if(LMDB_FOUND)
+    include_directories(${LMDB_INCLUDE_DIR})
+    target_link_libraries(mapcache ${LMDB_LIBRARY})
+    set(USE_LMDB 1)
+  else(LMDB_FOUND)
+    report_optional_not_found(LMDB)
+  endif(LMDB_FOUND)
+endif(WITH_LMDB)
+
 if(WITH_TIFF)
   find_package(TIFF)
   if(TIFF_FOUND)
@@ -335,6 +350,7 @@ status_optional_component("PIXMAN" "${USE_PIXMAN}" "${PIXMAN_LIBRARY}")
 status_optional_component("SQLITE" "${USE_SQLITE}" "${SQLITE_LIBRARY}")
 status_optional_component("POSTGRESQL" "${USE_POSTGRESQL}" "${PostgreSQL_LIBRARY}")
 status_optional_component("Berkeley DB" "${USE_BDB}" "${BERKELEYDB_LIBRARY}")
+status_optional_component("LMDB" "${USE_LMDB}" "${LMDB_LIBRARY}")
 status_optional_component("Memcache" "${USE_MEMCACHE}" "${APU_LIBRARY}")
 status_optional_component("Redis" "${USE_REDIS}" "${HIREDIS_LIBRARIES} ${HIREDIS_INCLUDE_DIR}")
 status_optional_component("TIFF" "${USE_TIFF}" "${TIFF_LIBRARY}")

cmake/FindLMDB.cmake

@@ -0,0 +1,13 @@
+set(LMDB_FOUND TRUE)
+
+set(LMDB_INC_SEARCH_PATH "/usr/include")
+set(LMDB_LIB_SEARCH_PATH "/usr/lib")
+
+find_path(LMDB_INCLUDE_DIR NAMES  "lmdb.h" HINTS ${LMDB_INC_SEARCH_PATH})
+find_library(LMDB_LIBRARY NAMES "lmdb" HINTS ${LMDB_LIB_SEARCH_PATH})
+
+set(LMDB_INCLUDE_DIRS ${LMDB_INCLUDE_DIR})
+set(LMDB_LIBRARIES ${LMDB_LIBRARY})
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(LMDB DEFAULT_MSG LMDB_LIBRARY LMDB_INCLUDE_DIR)
+mark_as_advanced(LMDB_LIBRARY LMDB_INCLUDE_DIR)

include/mapcache-config.h.in

@@ -6,6 +6,7 @@
 #cmakedefine USE_SQLITE 1
 #cmakedefine USE_POSTGRESQL 1
 #cmakedefine USE_BDB 1
+#cmakedefine USE_LMDB 1
 #cmakedefine USE_MEMCACHE 1
 #cmakedefine USE_REDIS 1
 #cmakedefine USE_TIFF 1

include/mapcache.h

@@ -334,6 +334,7 @@ typedef enum {
   ,MAPCACHE_CACHE_COUCHBASE
   ,MAPCACHE_CACHE_RIAK
   ,MAPCACHE_CACHE_REDIS
+  ,MAPCACHE_CACHE_LMDB
 
 } mapcache_cache_type;
 
@@ -400,6 +401,11 @@ mapcache_cache* mapcache_cache_mbtiles_create(mapcache_context *ctx);
  */
 mapcache_cache *mapcache_cache_bdb_create(mapcache_context *ctx);
 
+/**
+ * \memberof mapcache_cache_lmdb
+ */
+mapcache_cache *mapcache_cache_lmdb_create(mapcache_context *ctx);
+
 /**
  * \memberof mapcache_cache_memcache
  */