ha_ndbcluster.h
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上传日期:2022-05-23
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- /* Copyright (C) 2000-2003 MySQL AB
- 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, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- /*
- This file defines the NDB Cluster handler: the interface between MySQL and
- NDB Cluster
- */
- /* The class defining a handle to an NDB Cluster table */
- #ifdef USE_PRAGMA_INTERFACE
- #pragma interface /* gcc class implementation */
- #endif
- #include <ndbapi_limits.h>
- class Ndb; // Forward declaration
- class NdbOperation; // Forward declaration
- class NdbConnection; // Forward declaration
- class NdbRecAttr; // Forward declaration
- class NdbResultSet; // Forward declaration
- class NdbScanOperation;
- class NdbIndexScanOperation;
- class NdbBlob;
- // connectstring to cluster if given by mysqld
- extern const char *ndbcluster_connectstring;
- typedef enum ndb_index_type {
- UNDEFINED_INDEX = 0,
- PRIMARY_KEY_INDEX = 1,
- PRIMARY_KEY_ORDERED_INDEX = 2,
- UNIQUE_INDEX = 3,
- UNIQUE_ORDERED_INDEX = 4,
- ORDERED_INDEX = 5
- } NDB_INDEX_TYPE;
- typedef struct ndb_index_data {
- NDB_INDEX_TYPE type;
- void *index;
- void *unique_index;
- unsigned char *unique_index_attrid_map;
- } NDB_INDEX_DATA;
- typedef struct st_ndbcluster_share {
- THR_LOCK lock;
- pthread_mutex_t mutex;
- char *table_name;
- uint table_name_length,use_count;
- } NDB_SHARE;
- /*
- Place holder for ha_ndbcluster thread specific data
- */
- class Thd_ndb {
- public:
- Thd_ndb();
- ~Thd_ndb();
- Ndb *ndb;
- ulong count;
- uint lock_count;
- int error;
- };
- class ha_ndbcluster: public handler
- {
- public:
- ha_ndbcluster(TABLE *table);
- ~ha_ndbcluster();
- int open(const char *name, int mode, uint test_if_locked);
- int close(void);
- int write_row(byte *buf);
- int update_row(const byte *old_data, byte *new_data);
- int delete_row(const byte *buf);
- int index_init(uint index);
- int index_end();
- int index_read(byte *buf, const byte *key, uint key_len,
- enum ha_rkey_function find_flag);
- int index_read_idx(byte *buf, uint index, const byte *key, uint key_len,
- enum ha_rkey_function find_flag);
- int index_next(byte *buf);
- int index_prev(byte *buf);
- int index_first(byte *buf);
- int index_last(byte *buf);
- int rnd_init(bool scan);
- int rnd_end();
- int rnd_next(byte *buf);
- int rnd_pos(byte *buf, byte *pos);
- void position(const byte *record);
- int read_range_first(const key_range *start_key,
- const key_range *end_key,
- bool eq_range, bool sorted);
- int read_range_first_to_buf(const key_range *start_key,
- const key_range *end_key,
- bool eq_range, bool sorted,
- byte* buf);
- int read_range_next();
- bool get_error_message(int error, String *buf);
- void info(uint);
- int extra(enum ha_extra_function operation);
- int extra_opt(enum ha_extra_function operation, ulong cache_size);
- int reset();
- int external_lock(THD *thd, int lock_type);
- int start_stmt(THD *thd);
- const char * table_type() const;
- const char ** bas_ext() const;
- ulong table_flags(void) const;
- ulong index_flags(uint idx, uint part, bool all_parts) const;
- uint max_supported_record_length() const;
- uint max_supported_keys() const;
- uint max_supported_key_parts() const;
- uint max_supported_key_length() const;
- int rename_table(const char *from, const char *to);
- int delete_table(const char *name);
- int create(const char *name, TABLE *form, HA_CREATE_INFO *info);
- THR_LOCK_DATA **store_lock(THD *thd,
- THR_LOCK_DATA **to,
- enum thr_lock_type lock_type);
- bool low_byte_first() const;
- bool has_transactions();
- const char* index_type(uint key_number);
- double scan_time();
- ha_rows records_in_range(uint inx, key_range *min_key, key_range *max_key);
- void start_bulk_insert(ha_rows rows);
- int end_bulk_insert();
- static Thd_ndb* seize_thd_ndb();
- static void release_thd_ndb(Thd_ndb* thd_ndb);
- uint8 table_cache_type();
-
- static void set_dbname(const char *pathname, char *dbname);
- static void set_tabname(const char *pathname, char *tabname);
-
- private:
- int alter_table_name(const char *to);
- int drop_table();
- int create_index(const char *name, KEY *key_info, bool unique);
- int create_ordered_index(const char *name, KEY *key_info);
- int create_unique_index(const char *name, KEY *key_info);
- int initialize_autoincrement(const void *table);
- enum ILBP {ILBP_CREATE = 0, ILBP_OPEN = 1}; // Index List Build Phase
- int build_index_list(Ndb *ndb, TABLE *tab, enum ILBP phase);
- int get_metadata(const char* path);
- void release_metadata();
- NDB_INDEX_TYPE get_index_type(uint idx_no) const;
- NDB_INDEX_TYPE get_index_type_from_table(uint index_no) const;
- int check_index_fields_not_null(uint index_no);
- int pk_read(const byte *key, uint key_len, byte *buf);
- int complemented_pk_read(const byte *old_data, byte *new_data);
- int peek_row(const byte *record);
- int unique_index_read(const byte *key, uint key_len,
- byte *buf);
- int ordered_index_scan(const key_range *start_key,
- const key_range *end_key,
- bool sorted, byte* buf);
- int full_table_scan(byte * buf);
- int next_result(byte *buf);
- int define_read_attrs(byte* buf, NdbOperation* op);
- int filtered_scan(const byte *key, uint key_len,
- byte *buf,
- enum ha_rkey_function find_flag);
- int close_scan();
- void unpack_record(byte *buf);
- int get_ndb_lock_type(enum thr_lock_type type);
- void set_dbname(const char *pathname);
- void set_tabname(const char *pathname);
- bool set_hidden_key(NdbOperation*,
- uint fieldnr, const byte* field_ptr);
- int set_ndb_key(NdbOperation*, Field *field,
- uint fieldnr, const byte* field_ptr);
- int set_ndb_value(NdbOperation*, Field *field, uint fieldnr, bool *set_blob_value= 0);
- int get_ndb_value(NdbOperation*, Field *field, uint fieldnr, byte*);
- friend int g_get_ndb_blobs_value(NdbBlob *ndb_blob, void *arg);
- int get_ndb_blobs_value(NdbBlob *last_ndb_blob);
- int set_primary_key(NdbOperation *op, const byte *key);
- int set_primary_key_from_record(NdbOperation *op, const byte *record);
- int set_bounds(NdbIndexScanOperation *ndb_op, const key_range *keys[2]);
- int key_cmp(uint keynr, const byte * old_row, const byte * new_row);
- void print_results();
- longlong get_auto_increment();
- void invalidate_dictionary_cache(bool global);
- int ndb_err(NdbConnection*);
- bool uses_blob_value(bool all_fields);
- int write_ndb_file();
- private:
- int check_ndb_connection();
- NdbConnection *m_active_trans;
- NdbResultSet *m_active_cursor;
- void *m_table;
- int m_table_version;
- void *m_table_info;
- char m_dbname[FN_HEADLEN];
- //char m_schemaname[FN_HEADLEN];
- char m_tabname[FN_HEADLEN];
- ulong m_table_flags;
- THR_LOCK_DATA m_lock;
- NDB_SHARE *m_share;
- NDB_INDEX_DATA m_index[MAX_KEY];
- // NdbRecAttr has no reference to blob
- typedef union { NdbRecAttr *rec; NdbBlob *blob; void *ptr; } NdbValue;
- NdbValue m_value[NDB_MAX_ATTRIBUTES_IN_TABLE];
- bool m_use_write;
- bool m_ignore_dup_key;
- bool m_primary_key_update;
- bool m_retrieve_all_fields;
- bool m_retrieve_primary_key;
- ha_rows m_rows_to_insert;
- ha_rows m_rows_inserted;
- ha_rows m_bulk_insert_rows;
- bool m_bulk_insert_not_flushed;
- ha_rows m_ops_pending;
- bool m_skip_auto_increment;
- bool m_blobs_pending;
- // memory for blobs in one tuple
- char *m_blobs_buffer;
- uint32 m_blobs_buffer_size;
- uint m_dupkey;
- // set from thread variables at external lock
- bool m_ha_not_exact_count;
- bool m_force_send;
- ha_rows m_autoincrement_prefetch;
- bool m_transaction_on;
- bool m_use_local_query_cache;
- Ndb *get_ndb();
- void set_rec_per_key();
- void records_update();
- void no_uncommitted_rows_execute_failure();
- void no_uncommitted_rows_update(int);
- void no_uncommitted_rows_init(THD *);
- void no_uncommitted_rows_reset(THD *);
- friend int execute_no_commit(ha_ndbcluster*, NdbConnection*);
- friend int execute_commit(ha_ndbcluster*, NdbConnection*);
- friend int execute_no_commit_ie(ha_ndbcluster*, NdbConnection*);
- };
- bool ndbcluster_init(void);
- bool ndbcluster_end(void);
- int ndbcluster_commit(THD *thd, void* ndb_transaction);
- int ndbcluster_rollback(THD *thd, void* ndb_transaction);
- void ndbcluster_close_connection(THD *thd);
- int ndbcluster_discover(THD* thd, const char* dbname, const char* name,
- const void** frmblob, uint* frmlen);
- int ndbcluster_find_files(THD *thd,const char *db,const char *path,
- const char *wild, bool dir, List<char> *files);
- int ndbcluster_table_exists_in_engine(THD* thd,
- const char *db, const char *name);
- int ndbcluster_drop_database(const char* path);
- void ndbcluster_print_error(int error, const NdbOperation *error_op);
- int ndbcluster_show_status(THD*);