13
12
You should have received a copy of the GNU General Public License
14
13
along with this program; if not, write to the Free Software
15
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
20
#include "plugin/archive/archive_engine.h"
22
#include <boost/scoped_ptr.hpp>
25
using namespace drizzled;
14
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
17
#include <drizzled/server_includes.h>
18
#include <drizzled/field.h>
19
#include <drizzled/field/blob.h>
20
#include <drizzled/field/timestamp.h>
21
#include <storage/myisam/myisam.h>
22
#include <drizzled/table.h>
23
#include <drizzled/session.h>
25
#include <storage/archive/ha_archive.h>
29
28
First, if you want to understand storage engines you should look at
96
/* When the engine starts up set the first version */
97
static uint64_t global_version= 1;
99
// We use this to find out the state of the archive aio option.
100
extern bool archive_aio_state(void);
95
/* Variables for archive share methods */
96
pthread_mutex_t archive_mutex;
97
static HASH archive_open_tables;
98
static unsigned int global_version;
100
/* The file extension */
101
#define ARZ ".ARZ" // The data file
102
#define ARN ".ARN" // Files used during an optimize call
105
/* Static declarations for handerton */
106
static handler *archive_create_handler(handlerton *hton,
110
static bool archive_use_aio= false;
103
113
Number of rows that will force a bulk insert.
110
120
#define ARCHIVE_ROW_HEADER_SIZE 4
112
ArchiveShare *ArchiveEngine::findOpenTable(const string table_name)
114
ArchiveMap::iterator find_iter=
115
archive_open_tables.find(table_name);
117
if (find_iter != archive_open_tables.end())
118
return (*find_iter).second;
123
void ArchiveEngine::addOpenTable(const string &table_name, ArchiveShare *share)
125
archive_open_tables[table_name]= share;
128
void ArchiveEngine::deleteOpenTable(const string &table_name)
130
archive_open_tables.erase(table_name);
134
int ArchiveEngine::doDropTable(Session&, const TableIdentifier &identifier)
136
string new_path(identifier.getPath());
140
int error= unlink(new_path.c_str());
150
int ArchiveEngine::doGetTableDefinition(Session&,
151
const TableIdentifier &identifier,
152
drizzled::message::Table &table_proto)
154
struct stat stat_info;
158
proto_path.reserve(FN_REFLEN);
159
proto_path.assign(identifier.getPath());
161
proto_path.append(ARZ);
163
if (stat(proto_path.c_str(),&stat_info))
169
boost::scoped_ptr<azio_stream> proto_stream(new azio_stream);
171
if (azopen(proto_stream.get(), proto_path.c_str(), O_RDONLY, AZ_METHOD_BLOCK) == 0)
172
return HA_ERR_CRASHED_ON_USAGE;
174
proto_string= (char*)malloc(sizeof(char) * proto_stream->frm_length);
175
if (proto_string == NULL)
177
azclose(proto_stream.get());
181
azread_frm(proto_stream.get(), proto_string);
183
if (table_proto.ParseFromArray(proto_string, proto_stream->frm_length) == false)
184
error= HA_ERR_CRASHED_ON_USAGE;
186
azclose(proto_stream.get());
190
/* We set the name from what we've asked for as in RENAME TABLE for ARCHIVE
191
we do not rewrite the table proto (as it's wedged in the file header)
193
table_proto.set_schema(identifier.getSchemaName());
194
table_proto.set_name(identifier.getTableName());
200
ha_archive::ha_archive(drizzled::plugin::StorageEngine &engine_arg,
202
:Cursor(engine_arg, table_arg), delayed_insert(0), bulk_insert(0)
122
static handler *archive_create_handler(handlerton *hton,
126
return new (mem_root) ha_archive(hton, table);
130
Used for hash table that tracks open tables.
132
static unsigned char* archive_get_key(ARCHIVE_SHARE *share, size_t *length, bool)
134
*length=share->table_name_length;
135
return (unsigned char*) share->table_name;
140
Initialize the archive handler.
151
int archive_db_init(void *p)
153
handlerton *archive_hton;
155
archive_hton= (handlerton *)p;
156
archive_hton->state= SHOW_OPTION_YES;
157
archive_hton->create= archive_create_handler;
158
archive_hton->flags= HTON_NO_FLAGS;
160
/* When the engine starts up set the first version */
163
if (pthread_mutex_init(&archive_mutex, MY_MUTEX_INIT_FAST))
165
if (hash_init(&archive_open_tables, system_charset_info, 32, 0, 0,
166
(hash_get_key) archive_get_key, 0, 0))
168
pthread_mutex_destroy(&archive_mutex);
179
Release the archive handler.
189
int archive_db_done(void *)
191
hash_free(&archive_open_tables);
192
pthread_mutex_destroy(&archive_mutex);
198
ha_archive::ha_archive(handlerton *hton, TABLE_SHARE *table_arg)
199
:handler(hton, table_arg), delayed_insert(0), bulk_insert(0)
204
201
/* Set our original buffer from pre-allocated memory */
205
202
buffer.set((char *)byte_buffer, IO_SIZE, system_charset_info);
207
204
/* The size of the offset value we will use for position() */
208
ref_length= sizeof(internal::my_off_t);
205
ref_length= sizeof(my_off_t);
209
206
archive_reader_open= false;
226
ArchiveShare::ArchiveShare():
227
use_count(0), archive_write_open(false), dirty(false), crashed(false),
228
mean_rec_length(0), version(0), rows_recorded(0), version_rows(0)
233
ArchiveShare::ArchiveShare(const char *name):
234
use_count(0), archive_write_open(false), dirty(false), crashed(false),
235
mean_rec_length(0), version(0), rows_recorded(0), version_rows(0)
237
memset(&archive_write, 0, sizeof(azio_stream)); /* Archive file we are working with */
238
table_name.append(name);
239
data_file_name.assign(table_name);
240
data_file_name.append(ARZ);
242
We will use this lock for rows.
244
pthread_mutex_init(&_mutex,MY_MUTEX_INIT_FAST);
247
ArchiveShare::~ArchiveShare()
250
pthread_mutex_destroy(&_mutex);
252
We need to make sure we don't reset the crashed state.
253
If we open a crashed file, wee need to close it as crashed unless
254
it has been repaired.
255
Since we will close the data down after this, we go on and count
258
if (archive_write_open == true)
259
(void)azclose(&archive_write);
262
bool ArchiveShare::prime(uint64_t *auto_increment)
264
boost::scoped_ptr<azio_stream> archive_tmp(new azio_stream);
267
We read the meta file, but do not mark it dirty. Since we are not
268
doing a write we won't mark it dirty (and we won't open it for
269
anything but reading... open it for write and we will generate null
272
if (!(azopen(archive_tmp.get(), data_file_name.c_str(), O_RDONLY,
276
*auto_increment= archive_tmp->auto_increment + 1;
277
rows_recorded= (ha_rows)archive_tmp->rows;
278
crashed= archive_tmp->dirty;
279
if (version < global_version)
281
version_rows= rows_recorded;
282
version= global_version;
284
azclose(archive_tmp.get());
291
225
We create the shared memory space that we will use for the open table.
295
229
See ha_example.cc for a longer description.
297
ArchiveShare *ha_archive::get_share(const char *table_name, int *rc)
231
ARCHIVE_SHARE *ha_archive::get_share(const char *table_name, int *rc)
299
ArchiveEngine *a_engine= static_cast<ArchiveEngine *>(getEngine());
301
pthread_mutex_lock(&a_engine->mutex());
303
share= a_engine->findOpenTable(table_name);
235
pthread_mutex_lock(&archive_mutex);
236
length=(uint) strlen(table_name);
238
if (!(share=(ARCHIVE_SHARE*) hash_search(&archive_open_tables,
239
(unsigned char*) table_name,
307
share= new ArchiveShare(table_name);
243
azio_stream archive_tmp;
245
if (!my_multi_malloc(MYF(MY_WME | MY_ZEROFILL),
246
&share, sizeof(*share),
311
pthread_mutex_unlock(&a_engine->mutex());
250
pthread_mutex_unlock(&archive_mutex);
312
251
*rc= HA_ERR_OUT_OF_MEM;
316
if (share->prime(&stats.auto_increment_value) == false)
256
share->table_name_length= length;
257
share->table_name= tmp_name;
258
share->crashed= false;
259
share->archive_write_open= false;
260
fn_format(share->data_file_name, table_name, "",
261
ARZ, MY_REPLACE_EXT | MY_UNPACK_FILENAME);
262
strcpy(share->table_name, table_name);
264
We will use this lock for rows.
266
pthread_mutex_init(&share->mutex,MY_MUTEX_INIT_FAST);
269
We read the meta file, but do not mark it dirty. Since we are not
270
doing a write we won't mark it dirty (and we won't open it for
271
anything but reading... open it for write and we will generate null
274
if (!(azopen(&archive_tmp, share->data_file_name, O_RDONLY,
318
pthread_mutex_unlock(&a_engine->mutex());
277
pthread_mutex_destroy(&share->mutex);
279
pthread_mutex_unlock(&archive_mutex);
319
280
*rc= HA_ERR_CRASHED_ON_REPAIR;
325
a_engine->addOpenTable(share->table_name, share);
326
thr_lock_init(&share->_lock);
283
stats.auto_increment_value= archive_tmp.auto_increment + 1;
284
share->rows_recorded= (ha_rows)archive_tmp.rows;
285
share->crashed= archive_tmp.dirty;
286
if (share->version < global_version)
288
share->version_rows= share->rows_recorded;
289
share->version= global_version;
291
azclose(&archive_tmp);
293
my_hash_insert(&archive_open_tables, (unsigned char*) share);
294
thr_lock_init(&share->lock);
328
296
share->use_count++;
330
297
if (share->crashed)
331
298
*rc= HA_ERR_CRASHED_ON_USAGE;
332
pthread_mutex_unlock(&a_engine->mutex());
299
pthread_mutex_unlock(&archive_mutex);
342
309
int ha_archive::free_share()
344
ArchiveEngine *a_engine= static_cast<ArchiveEngine *>(getEngine());
346
pthread_mutex_lock(&a_engine->mutex());
313
pthread_mutex_lock(&archive_mutex);
347
314
if (!--share->use_count)
349
a_engine->deleteOpenTable(share->table_name);
316
hash_delete(&archive_open_tables, (unsigned char*) share);
317
thr_lock_delete(&share->lock);
318
pthread_mutex_destroy(&share->mutex);
320
We need to make sure we don't reset the crashed state.
321
If we open a crashed file, wee need to close it as crashed unless
322
it has been repaired.
323
Since we will close the data down after this, we go on and count
326
if (share->archive_write_open == true)
328
if (azclose(&(share->archive_write)))
331
free((unsigned char*) share);
352
pthread_mutex_unlock(&a_engine->mutex());
333
pthread_mutex_unlock(&archive_mutex);
357
338
int ha_archive::init_archive_writer()
396
We just implement one additional file extension.
398
static const char *ha_archive_exts[] = {
403
const char **ha_archive::bas_ext() const
405
return ha_archive_exts;
411
410
When opening a file we:
412
411
Create/get our shared structure.
414
413
We open the file we will read from.
416
int ha_archive::doOpen(const TableIdentifier &identifier, int , uint32_t )
415
int ha_archive::open(const char *name, int, uint32_t open_options)
419
share= get_share(identifier.getPath().c_str(), &rc);
422
We either fix it ourselves, or we just take it offline
424
@todo Create some documentation in the recovery tools shipped with the engine.
426
if (rc == HA_ERR_CRASHED_ON_USAGE)
418
share= get_share(name, &rc);
420
if (rc == HA_ERR_CRASHED_ON_USAGE && !(open_options & HA_OPEN_FOR_REPAIR))
422
/* purecov: begin inspected */
433
427
else if (rc == HA_ERR_OUT_OF_MEM)
500
int ArchiveEngine::doCreateTable(Session &,
502
const drizzled::TableIdentifier &identifier,
503
drizzled::message::Table& proto)
499
int ha_archive::create(const char *name, Table *table_arg,
500
HA_CREATE_INFO *create_info)
506
boost::scoped_ptr<azio_stream> create_stream(new azio_stream);
507
uint64_t auto_increment_value;
508
string serialized_proto;
510
auto_increment_value= proto.options().auto_increment_value();
512
for (uint32_t key= 0; key < table_arg.sizeKeys(); key++)
502
char name_buff[FN_REFLEN];
503
char linkname[FN_REFLEN];
505
azio_stream create_stream; /* Archive file we are working with */
506
File frm_file; /* File handler for readers */
507
struct stat file_stat;
508
unsigned char *frm_ptr;
510
stats.auto_increment_value= create_info->auto_increment_value;
512
for (uint32_t key= 0; key < table_arg->sizeKeys(); key++)
514
KeyInfo *pos= &table_arg.key_info[key];
515
KeyPartInfo *key_part= pos->key_part;
516
KeyPartInfo *key_part_end= key_part + pos->key_parts;
514
KEY *pos= table_arg->key_info+key;
515
KEY_PART_INFO *key_part= pos->key_part;
516
KEY_PART_INFO *key_part_end= key_part + pos->key_parts;
518
518
for (; key_part != key_part_end; key_part++)
522
522
if (!(field->flags & AUTO_INCREMENT_FLAG))
529
std::string named_file= identifier.getPath();
530
named_file.append(ARZ);
533
if (azopen(create_stream.get(), named_file.c_str(), O_CREAT|O_RDWR,
534
AZ_METHOD_BLOCK) == 0)
537
unlink(named_file.c_str());
539
return(error ? error : -1);
543
proto.SerializeToString(&serialized_proto);
547
unlink(named_file.c_str());
549
return(error ? error : -1);
552
if (azwrite_frm(create_stream.get(), serialized_proto.c_str(),
553
serialized_proto.length()))
555
unlink(named_file.c_str());
557
return(error ? error : -1);
560
if (proto.options().has_comment())
564
write_length= azwrite_comment(create_stream.get(),
565
proto.options().comment().c_str(),
566
proto.options().comment().length());
568
if (write_length < 0)
571
unlink(named_file.c_str());
573
return(error ? error : -1);
578
Yes you need to do this, because the starting value
579
for the autoincrement may not be zero.
581
create_stream->auto_increment= auto_increment_value ?
582
auto_increment_value - 1 : 0;
584
if (azclose(create_stream.get()))
587
unlink(named_file.c_str());
589
return(error ? error : -1);
531
We reuse name_buff since it is available.
533
if (create_info->data_file_name && create_info->data_file_name[0] != '#')
535
fn_format(name_buff, create_info->data_file_name, "", ARZ,
536
MY_REPLACE_EXT | MY_UNPACK_FILENAME);
537
fn_format(linkname, name, "", ARZ,
538
MY_REPLACE_EXT | MY_UNPACK_FILENAME);
542
fn_format(name_buff, name, "", ARZ,
543
MY_REPLACE_EXT | MY_UNPACK_FILENAME);
548
There is a chance that the file was "discovered". In this case
549
just use whatever file is there.
551
if (!stat(name_buff, &file_stat))
554
if (!(azopen(&create_stream, name_buff, O_CREAT|O_RDWR,
562
my_symlink(name_buff, linkname, MYF(0));
563
fn_format(name_buff, name, "", ".frm",
564
MY_REPLACE_EXT | MY_UNPACK_FILENAME);
567
Here is where we open up the frm and pass it to archive to store
569
if ((frm_file= my_open(name_buff, O_RDONLY, MYF(0))) > 0)
571
if (fstat(frm_file, &file_stat))
573
frm_ptr= (unsigned char *)malloc(sizeof(unsigned char) *
577
my_read(frm_file, frm_ptr, file_stat.st_size, MYF(0));
578
azwrite_frm(&create_stream, (char *)frm_ptr, file_stat.st_size);
579
free((unsigned char*)frm_ptr);
582
my_close(frm_file, MYF(0));
585
if (create_info->comment.str)
586
azwrite_comment(&create_stream, create_info->comment.str,
587
(unsigned int)create_info->comment.length);
590
Yes you need to do this, because the starting value
591
for the autoincrement may not be zero.
593
create_stream.auto_increment= stats.auto_increment_value ?
594
stats.auto_increment_value - 1 : 0;
595
if (azclose(&create_stream))
609
/* Return error number, if we got one */
610
return(error ? error : -1);
643
661
unsigned char *ptr;
645
663
if (fix_rec_buff(max_row_length(record)))
646
return(HA_ERR_OUT_OF_MEM);
664
return(HA_ERR_OUT_OF_MEM); /* purecov: inspected */
648
666
/* Copy null bits */
649
memcpy(&record_buffer[0], record, getTable()->getShare()->null_bytes);
650
ptr= &record_buffer[0] + getTable()->getShare()->null_bytes;
667
memcpy(record_buffer->buffer, record, table->s->null_bytes);
668
ptr= record_buffer->buffer + table->s->null_bytes;
652
for (Field **field=getTable()->getFields() ; *field ; field++)
670
for (Field **field=table->field ; *field ; field++)
654
672
if (!((*field)->is_null()))
655
673
ptr= (*field)->pack(ptr, record + (*field)->offset(record));
658
return((unsigned int) (ptr - &record_buffer[0]));
676
return((unsigned int) (ptr - record_buffer->buffer));
668
686
for implementing start_bulk_insert() is that we could skip
669
687
setting dirty to true each time.
671
int ha_archive::doInsertRecord(unsigned char *buf)
689
int ha_archive::write_row(unsigned char *buf)
674
692
unsigned char *read_buf= NULL;
675
693
uint64_t temp_auto;
676
unsigned char *record= getTable()->getInsertRecord();
694
unsigned char *record= table->record[0];
678
696
if (share->crashed)
679
697
return(HA_ERR_CRASHED_ON_USAGE);
681
pthread_mutex_lock(&share->mutex());
699
ha_statistic_increment(&SSV::ha_write_count);
700
if (table->timestamp_field_type & TIMESTAMP_AUTO_SET_ON_INSERT)
701
table->timestamp_field->set_time();
702
pthread_mutex_lock(&share->mutex);
683
704
if (share->archive_write_open == false)
684
705
if (init_archive_writer())
685
706
return(HA_ERR_CRASHED_ON_USAGE);
688
if (getTable()->next_number_field && record == getTable()->getInsertRecord())
709
if (table->next_number_field && record == table->record[0])
711
KEY *mkey= &table->s->key_info[0]; // We only support one key right now
690
712
update_auto_increment();
691
temp_auto= getTable()->next_number_field->val_int();
713
temp_auto= table->next_number_field->val_int();
694
716
We don't support decremening auto_increment. They make the performance
697
719
if (temp_auto <= share->archive_write.auto_increment &&
698
getTable()->getShare()->getKeyInfo(0).flags & HA_NOSAME)
720
mkey->flags & HA_NOSAME)
700
722
rc= HA_ERR_FOUND_DUPP_KEY;
727
Bad news, this will cause a search for the unique value which is very
728
expensive since we will have to do a table scan which will lock up
729
all other writers during this period. This could perhaps be optimized
734
First we create a buffer that we can use for reading rows, and can pass
737
if (!(read_buf= (unsigned char*) malloc(table->s->reclength)))
739
rc= HA_ERR_OUT_OF_MEM;
743
All of the buffer must be written out or we won't see all of the
746
azflush(&(share->archive_write), Z_SYNC_FLUSH);
748
Set the position of the local read thread to the beginning postion.
750
if (read_data_header(&archive))
752
rc= HA_ERR_CRASHED_ON_USAGE;
756
Field *mfield= table->next_number_field;
758
while (!(get_row(&archive, read_buf)))
760
if (!memcmp(read_buf + mfield->offset(record),
761
table->next_number_field->ptr,
762
mfield->max_display_length()))
764
rc= HA_ERR_FOUND_DUPP_KEY;
705
772
if (temp_auto > share->archive_write.auto_increment)
743
810
the optimizer that we have unique indexes, we scan
745
812
int ha_archive::index_read(unsigned char *buf, const unsigned char *key,
746
uint32_t key_len, enum ha_rkey_function)
813
uint32_t key_len, enum ha_rkey_function find_flag)
816
rc= index_read_idx(buf, active_index, key, key_len, find_flag);
821
int ha_archive::index_read_idx(unsigned char *buf, uint32_t index, const unsigned char *key,
822
uint32_t key_len, enum ha_rkey_function)
750
current_k_offset= getTable()->getShare()->getKeyInfo(0).key_part->offset;
826
KEY *mkey= &table->s->key_info[index];
827
current_k_offset= mkey->key_part->offset;
751
828
current_key= key;
752
829
current_key_len= key_len;
754
rc= doStartTableScan(true);
889
977
return(HA_ERR_END_OF_FILE);
892
ha_statistic_increment(&system_status_var::ha_read_rnd_next_count);
980
ha_statistic_increment(&SSV::ha_read_rnd_next_count);
893
981
current_position= aztell(&archive);
894
982
rc= get_row(&archive, buf);
896
getTable()->status=rc ? STATUS_NOT_FOUND: 0;
984
table->status=rc ? STATUS_NOT_FOUND: 0;
903
Thanks to the table bool is_ordered this will be called after
991
Thanks to the table flag HA_REC_NOT_IN_SEQ this will be called after
904
992
each call to ha_archive::rnd_next() if an ordering of the rows is
908
996
void ha_archive::position(const unsigned char *)
910
internal::my_store_ptr(ref, ref_length, current_position);
998
my_store_ptr(ref, ref_length, current_position);
962
1052
share->archive_write_open= false;
966
proto_string= (char*)malloc(sizeof(char) * archive.frm_length);
967
if (proto_string == NULL)
971
azread_frm(&archive, proto_string);
973
1055
/* Lets create a file to contain the new data */
974
std::string writer_filename= share->table_name;
975
writer_filename.append(ARN);
1056
fn_format(writer_filename, share->table_name, "", ARN,
1057
MY_REPLACE_EXT | MY_UNPACK_FILENAME);
977
if (!(azopen(writer.get(), writer_filename.c_str(), O_CREAT|O_RDWR, AZ_METHOD_BLOCK)))
1059
if (!(azopen(&writer, writer_filename, O_CREAT|O_RDWR, AZ_METHOD_BLOCK)))
980
1060
return(HA_ERR_CRASHED_ON_USAGE);
983
azwrite_frm(writer.get(), proto_string, archive.frm_length);
986
1063
An extended rebuild is a lot more effort. We open up each row and re-record it.
1012
1090
rows_restored= archive.rows;
1014
for (uint64_t x= 0; x < rows_restored ; x++)
1092
for (x= 0; x < rows_restored ; x++)
1016
rc= get_row(&archive, getTable()->getInsertRecord());
1094
rc= get_row(&archive, table->record[0]);
1021
real_write_row(getTable()->getInsertRecord(), writer.get());
1099
real_write_row(table->record[0], &writer);
1023
1101
Long term it should be possible to optimize this so that
1024
1102
it is not called on each row.
1026
if (getTable()->found_next_number_field)
1104
if (table->found_next_number_field)
1028
Field *field= getTable()->found_next_number_field;
1030
/* Since we will need to use field to translate, we need to flip its read bit */
1031
field->setReadSet();
1106
Field *field= table->found_next_number_field;
1033
1107
uint64_t auto_value=
1034
(uint64_t) field->val_int_internal(getTable()->getInsertRecord() +
1035
field->offset(getTable()->getInsertRecord()));
1108
(uint64_t) field->val_int(table->record[0] +
1109
field->offset(table->record[0]));
1036
1110
if (share->archive_write.auto_increment < auto_value)
1037
1111
stats.auto_increment_value=
1038
1112
(share->archive_write.auto_increment= auto_value) + 1;
1041
share->rows_recorded= (ha_rows)writer->rows;
1115
share->rows_recorded= (ha_rows)writer.rows;
1044
1118
if (rc && rc != HA_ERR_END_OF_FILE)
1298
We just return state if asked.
1300
bool ha_archive::is_crashed() const
1302
return(share->crashed);
1207
1306
Simple scan of the tables to make sure everything is ok.
1210
int ha_archive::check(Session* session)
1309
int ha_archive::check(Session* session, HA_CHECK_OPT *)
1213
1312
const char *old_proc_info;
1215
1315
old_proc_info= get_session_proc_info(session);
1216
1316
set_session_proc_info(session, "Checking table");
1217
1317
/* Flush any waiting data */
1218
pthread_mutex_lock(&share->mutex());
1318
pthread_mutex_lock(&share->mutex);
1219
1319
azflush(&(share->archive_write), Z_SYNC_FLUSH);
1220
pthread_mutex_unlock(&share->mutex());
1320
pthread_mutex_unlock(&share->mutex);
1223
1323
Now we will rewind the archive file so that we are positioned at the
1250
int ArchiveEngine::doRenameTable(Session&, const TableIdentifier &from, const TableIdentifier &to)
1254
for (const char **ext= bas_ext(); *ext ; ext++)
1256
if (rename_file_ext(from.getPath().c_str(), to.getPath().c_str(), *ext))
1258
if ((error=errno) != ENOENT)
1267
bool ArchiveEngine::doDoesTableExist(Session&,
1268
const TableIdentifier &identifier)
1270
string proto_path(identifier.getPath());
1271
proto_path.append(ARZ);
1273
if (access(proto_path.c_str(), F_OK))
1281
void ArchiveEngine::doGetTableIdentifiers(drizzled::CachedDirectory &directory,
1282
const drizzled::SchemaIdentifier &schema_identifier,
1283
drizzled::TableIdentifier::vector &set_of_identifiers)
1285
drizzled::CachedDirectory::Entries entries= directory.getEntries();
1287
for (drizzled::CachedDirectory::Entries::iterator entry_iter= entries.begin();
1288
entry_iter != entries.end(); ++entry_iter)
1290
drizzled::CachedDirectory::Entry *entry= *entry_iter;
1291
const string *filename= &entry->filename;
1293
assert(filename->size());
1295
const char *ext= strchr(filename->c_str(), '.');
1297
if (ext == NULL || my_strcasecmp(system_charset_info, ext, ARZ) ||
1298
(filename->compare(0, strlen(TMP_FILE_PREFIX), TMP_FILE_PREFIX) == 0))
1302
char uname[NAME_LEN + 1];
1303
uint32_t file_name_len;
1305
file_name_len= TableIdentifier::filename_to_tablename(filename->c_str(), uname, sizeof(uname));
1306
// TODO: Remove need for memory copy here
1307
uname[file_name_len - sizeof(ARZ) + 1]= '\0'; // Subtract ending, place NULL
1309
set_of_identifiers.push_back(TableIdentifier(schema_identifier, uname));
1351
Check and repair the table if needed.
1353
bool ha_archive::check_and_repair(Session *session)
1355
HA_CHECK_OPT check_opt;
1359
return(repair(session, &check_opt));
1362
archive_record_buffer *ha_archive::create_record_buffer(unsigned int length)
1364
archive_record_buffer *r;
1365
if (!(r= (archive_record_buffer*) malloc(sizeof(archive_record_buffer))))
1367
return(NULL); /* purecov: inspected */
1369
r->length= (int)length;
1371
if (!(r->buffer= (unsigned char*) malloc(r->length)))
1374
return(NULL); /* purecov: inspected */
1380
void ha_archive::destroy_record_buffer(archive_record_buffer *r)
1382
free((char*) r->buffer);
1387
static DRIZZLE_SYSVAR_BOOL(aio, archive_use_aio,
1388
PLUGIN_VAR_NOCMDOPT,
1389
"Whether or not to use asynchronous IO.",
1392
static struct st_mysql_sys_var* archive_system_variables[]= {
1393
DRIZZLE_SYSVAR(aio),
1397
mysql_declare_plugin(archive)
1399
DRIZZLE_STORAGE_ENGINE_PLUGIN,
1402
"Brian Aker, MySQL AB",
1403
"Archive storage engine",
1405
archive_db_init, /* Plugin Init */
1406
archive_db_done, /* Plugin Deinit */
1407
NULL, /* status variables */
1408
archive_system_variables, /* system variables */
1409
NULL /* config options */
1411
mysql_declare_plugin_end;