ClickHouse/dbms/tests/external_dictionaries/dictionary_library/dictionary_library_c.c

98 lines
2.7 KiB
C
Raw Normal View History

/// Pure c sample dictionary library
#include <inttypes.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
typedef const char * CString;
typedef struct
{
const uint64_t size;
const uint64_t * data;
} ClickHouseLibVectorUInt64;
typedef struct
{
uint64_t size;
CString * data;
} ClickHouseLibCStrings;
typedef struct
{
void (*log)(int, CString);
} LibHolder;
typedef struct
{
LibHolder * lib;
int someField;
} DataHolder;
#define LOG(logger, format, ...) \
do \
{ \
char buffer[128]; \
sprintf(buffer, (format), ##__VA_ARGS__); \
(logger)(6, buffer); \
} while (0)
void * ClickHouseDictionary_v3_loadIds(
void * data_ptr, ClickHouseLibCStrings * settings, ClickHouseLibCStrings * columns, ClickHouseLibVectorUInt64 * ids)
{
LibHolder * lib = ((DataHolder *)(data_ptr))->lib;
LOG(lib->log, "loadIds c lib call ptr=%p size=%" PRIu64, data_ptr, ids->size);
return 0;
}
void * ClickHouseDictionary_v3_loadAll(void * data_ptr, ClickHouseLibCStrings * settings, ClickHouseLibCStrings * columns)
{
LibHolder * lib = ((DataHolder *)(data_ptr))->lib;
LOG(lib->log, "loadAll c lib call ptr=%p", data_ptr);
return 0;
}
void * ClickHouseDictionary_v3_loadKeys(
void * data_ptr, ClickHouseLibCStrings * settings, ClickHouseLibCStrings * columns, const ClickHouseLibVectorUInt64 * requested_rows)
{
LibHolder * lib = ((DataHolder *)(data_ptr))->lib;
LOG(lib->log, "loadKeys c lib call ptr=%p size=%" PRIu64, data_ptr, requested_rows->size);
return 0;
}
void * ClickHouseDictionary_v3_libNew(ClickHouseLibCStrings * settings, void (*logFunc)(int, CString))
{
LibHolder * lib_ptr = (LibHolder *)malloc(sizeof(LibHolder));
lib_ptr->log = logFunc;
LOG(lib_ptr->log, "libNew c lib call lib_ptr=%p", lib_ptr);
return lib_ptr;
}
void ClickHouseDictionary_v3_libDelete(void * lib_ptr)
{
LibHolder * lib = (LibHolder *)(lib_ptr);
LOG(lib->log, "libDelete c lib call lib_ptr=%p", lib_ptr);
free(lib_ptr);
return;
}
void * ClickHouseDictionary_v3_dataNew(void * lib_ptr)
{
DataHolder * data_ptr = (DataHolder *)malloc(sizeof(DataHolder));
data_ptr->lib = (LibHolder *)lib_ptr;
data_ptr->someField = 42;
LOG(data_ptr->lib->log, "dataNew c lib call lib_ptr=%p data_ptr=%p", lib_ptr, data_ptr);
return data_ptr;
}
void ClickHouseDictionary_v3_dataDelete(void * lib_ptr, void * data_ptr)
{
LibHolder * lib = (LibHolder *)(lib_ptr);
LOG(lib->log, "dataDelete c lib call lib_ptr=%p data_ptr=%p", lib_ptr, data_ptr);
free(data_ptr);
return;
}