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/*
Copyright(C) 2021-2022 Sutou Kouhei <kou@clear-code.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#pragma once
#include "grn_db.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef enum {
GRN_WAL_EVENT_NIL,
GRN_WAL_EVENT_SET_VALUE,
GRN_WAL_EVENT_NEW_SEGMENT,
GRN_WAL_EVENT_USE_SEGMENT,
GRN_WAL_EVENT_REUSE_SEGMENT,
GRN_WAL_EVENT_FREE_SEGMENT,
GRN_WAL_EVENT_ADD_ENTRY,
GRN_WAL_EVENT_ADD_SHARED_ENTRY,
GRN_WAL_EVENT_REUSE_ENTRY,
GRN_WAL_EVENT_REUSE_SHARED_ENTRY,
GRN_WAL_EVENT_RESET_ENTRY,
GRN_WAL_EVENT_ENABLE_ENTRY,
GRN_WAL_EVENT_SET_ENTRY_KEY,
GRN_WAL_EVENT_DELETE_ENTRY,
GRN_WAL_EVENT_UPDATE_ENTRY,
GRN_WAL_EVENT_REHASH,
GRN_WAL_EVENT_DELETE_INFO_PHASE1,
GRN_WAL_EVENT_DELETE_INFO_PHASE2,
GRN_WAL_EVENT_DELETE_INFO_PHASE3,
GRN_WAL_EVENT_DEFRAG_KEY,
GRN_WAL_EVENT_DEFRAG_CURRENT_KEY,
} grn_wal_event;
const char *
grn_wal_event_to_string(grn_wal_event event);
typedef enum {
GRN_WAL_SEGMENT_CHUNK,
GRN_WAL_SEGMENT_SEQUENTIAL,
GRN_WAL_SEGMENT_HUGE,
GRN_WAL_SEGMENT_EINFO,
GRN_WAL_SEGMENT_GINFO,
} grn_wal_segment_type;
const char *
grn_wal_segment_type_to_string(grn_wal_segment_type type);
typedef enum {
GRN_WAL_KEY_END,
GRN_WAL_KEY_ID,
GRN_WAL_KEY_EVENT,
GRN_WAL_KEY_RECORD_ID,
GRN_WAL_KEY_RECORD_DIRECTION,
GRN_WAL_KEY_ELEMENT_SIZE,
GRN_WAL_KEY_KEY,
GRN_WAL_KEY_KEY_SIZE,
GRN_WAL_KEY_KEY_HASH_VALUE,
GRN_WAL_KEY_KEY_OFFSET,
GRN_WAL_KEY_SHARED_KEY_OFFSET,
GRN_WAL_KEY_IS_SHARED,
GRN_WAL_KEY_CHECK,
GRN_WAL_KEY_NEW_KEY,
GRN_WAL_KEY_PARENT_RECORD_ID,
GRN_WAL_KEY_PARENT_RECORD_DIRECTION,
GRN_WAL_KEY_PARENT_CHECK,
GRN_WAL_KEY_GRANDPARENT_RECORD_ID,
GRN_WAL_KEY_OTHERSIDE_RECORD_ID,
GRN_WAL_KEY_OTHERSIDE_CHECK,
GRN_WAL_KEY_LEFT_RECORD_ID,
GRN_WAL_KEY_RIGHT_RECORD_ID,
GRN_WAL_KEY_VALUE,
GRN_WAL_KEY_INDEX_HASH_VALUE,
GRN_WAL_KEY_SEGMENT,
GRN_WAL_KEY_POSITION,
GRN_WAL_KEY_SEGMENT_TYPE,
GRN_WAL_KEY_SEGMENT_INFO,
GRN_WAL_KEY_GARBAGE_SEGMENT,
GRN_WAL_KEY_PREVIOUS_GARBAGE_SEGMENT,
GRN_WAL_KEY_NEXT_GARBAGE_SEGMENT,
GRN_WAL_KEY_GARBAGE_SEGMENT_HEAD,
GRN_WAL_KEY_GARBAGE_SEGMENT_TAIL,
GRN_WAL_KEY_GARBAGE_SEGMENT_N_RECORDS,
GRN_WAL_KEY_GARBAGE_RECORD_ID,
GRN_WAL_KEY_NEXT_GARBAGE_RECORD_ID,
GRN_WAL_KEY_N_GARBAGES,
GRN_WAL_KEY_N_ENTRIES,
GRN_WAL_KEY_FOUND_GARBAGE,
GRN_WAL_KEY_MAX_OFFSET,
GRN_WAL_KEY_EXPECTED_N_ENTRIES,
GRN_WAL_KEY_DELETE_INFO_INDEX,
GRN_WAL_KEY_DELETE_INFO_PHASE1_INDEX,
GRN_WAL_KEY_DELETE_INFO_PHASE2_INDEX,
GRN_WAL_KEY_DELETE_INFO_PHASE3_INDEX,
GRN_WAL_KEY_PREVIOUS_RECORD_ID,
} grn_wal_key;
const char *
grn_wal_key_to_string(grn_wal_key key);
typedef enum {
GRN_WAL_VALUE_NIL,
GRN_WAL_VALUE_EVENT,
GRN_WAL_VALUE_RECORD_ID,
GRN_WAL_VALUE_SEGMENT_TYPE,
GRN_WAL_VALUE_BOOLEAN,
GRN_WAL_VALUE_INT32,
GRN_WAL_VALUE_UINT32,
GRN_WAL_VALUE_INT64,
GRN_WAL_VALUE_UINT64,
GRN_WAL_VALUE_BINARY,
} grn_wal_value_type;
typedef enum {
GRN_WAL_READER_DATA_NIL,
GRN_WAL_READER_DATA_BOOLEAN,
GRN_WAL_READER_DATA_INT64,
GRN_WAL_READER_DATA_UINT64,
GRN_WAL_READER_DATA_FLOAT32,
GRN_WAL_READER_DATA_FLOAT64,
GRN_WAL_READER_DATA_STRING,
GRN_WAL_READER_DATA_BINARY,
} grn_wal_reader_data_type;
const char *
grn_wal_reader_data_type_to_string(grn_wal_reader_data_type type);
typedef struct {
grn_wal_reader_data_type type;
union {
bool boolean;
int64_t int64;
uint64_t uint64;
float float32;
double float64;
struct {
const char *data;
size_t size;
} string;
struct {
const void *data;
size_t size;
} binary;
} content;
} grn_wal_reader_data;
typedef struct {
uint64_t id;
grn_wal_event event;
grn_id record_id;
uint8_t record_direction;
uint32_t element_size;
grn_wal_reader_data key;
uint32_t key_hash_value;
uint64_t key_offset;
uint64_t shared_key_offset;
bool is_shared;
uint16_t check;
grn_wal_reader_data new_key;
grn_id parent_record_id;
uint8_t parent_record_direction;
uint16_t parent_check;
grn_id grandparent_record_id;
grn_id otherside_record_id;
uint16_t otherside_check;
grn_id left_record_id;
grn_id right_record_id;
grn_wal_reader_data value;
uint32_t index_hash_value;
uint32_t segment;
uint32_t position;
grn_wal_segment_type segment_type;
uint32_t segment_info;
uint32_t garbage_segment;
uint32_t previous_garbage_segment;
uint32_t next_garbage_segment;
uint32_t garbage_segment_head;
uint32_t garbage_segment_tail;
uint32_t garbage_segment_n_records;
grn_id garbage_record_id;
grn_id next_garbage_record_id;
uint32_t n_garbages;
uint32_t n_entries;
bool found_garbage;
uint32_t max_offset;
uint32_t expected_n_entries;
uint32_t delete_info_index;
uint32_t delete_info_phase1_index;
uint32_t delete_info_phase2_index;
uint32_t delete_info_phase3_index;
grn_id previous_record_id;
} grn_wal_reader_entry;
uint64_t
grn_wal_generate_id(grn_ctx *ctx);
grn_rc
grn_wal_add_entry(grn_ctx *ctx,
grn_obj *obj,
bool need_lock,
uint64_t *wal_id,
const char *tag,
grn_wal_key key,
...);
grn_rc
grn_wal_add_entryv(grn_ctx *ctx,
grn_obj *obj,
bool need_lock,
uint64_t *wal_id,
const char *tag,
grn_wal_key key,
va_list args);
grn_rc
grn_wal_touch(grn_ctx *ctx,
grn_obj *obj,
bool need_lock,
const char *tag);
bool
grn_wal_exist(grn_ctx *ctx, grn_obj *obj);
grn_rc
grn_wal_remove(grn_ctx *ctx,
const char *path,
const char *tag);
grn_rc
grn_wal_clear(grn_ctx *ctx,
grn_obj *obj,
bool need_lock,
const char *tag);
typedef struct grn_wal_reader_ grn_wal_reader;
grn_wal_reader *
grn_wal_reader_open(grn_ctx *ctx,
grn_obj *obj,
const char *tag);
grn_rc
grn_wal_reader_close(grn_ctx *ctx,
grn_wal_reader *reader);
grn_rc
grn_wal_reader_read_entry(grn_ctx *ctx,
grn_wal_reader *reader,
grn_wal_reader_entry *entry);
void
grn_wal_set_recover_error(grn_ctx *ctx,
grn_rc rc,
grn_obj *object,
grn_wal_reader_entry *entry,
const char *tag,
const char *message);
grn_rc
grn_wal_dump(grn_ctx *ctx, grn_obj *obj);
#ifdef __cplusplus
}
#endif
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