21
21
* @file Implementation of the Session class and API
26
#include <drizzled/copy_field.h>
27
#include <drizzled/data_home.h>
28
#include <drizzled/display.h>
29
#include <drizzled/drizzled.h>
25
#include <drizzled/session.h>
26
#include "drizzled/session_list.h"
30
28
#include <drizzled/error.h>
31
29
#include <drizzled/gettext.h>
32
#include <drizzled/identifier.h>
33
#include <drizzled/internal/iocache.h>
34
#include <drizzled/internal/thread_var.h>
35
#include <drizzled/internal_error_handler.h>
30
#include <drizzled/query_id.h>
31
#include <drizzled/data_home.h>
32
#include <drizzled/sql_base.h>
33
#include <drizzled/lock.h>
36
34
#include <drizzled/item/cache.h>
37
#include <drizzled/item/empty_string.h>
38
35
#include <drizzled/item/float.h>
39
36
#include <drizzled/item/return_int.h>
40
#include <drizzled/lock.h>
41
#include <drizzled/plugin/authentication.h>
37
#include <drizzled/item/empty_string.h>
38
#include <drizzled/show.h>
42
39
#include <drizzled/plugin/client.h>
43
#include <drizzled/plugin/event_observer.h>
44
#include <drizzled/plugin/logging.h>
45
#include <drizzled/plugin/query_rewrite.h>
46
#include <drizzled/plugin/scheduler.h>
47
#include <drizzled/plugin/transactional_storage_engine.h>
48
#include <drizzled/probes.h>
49
#include <drizzled/pthread_globals.h>
50
#include <drizzled/query_id.h>
51
#include <drizzled/refresh_version.h>
52
#include <drizzled/select_dump.h>
53
#include <drizzled/select_exists_subselect.h>
54
#include <drizzled/select_export.h>
55
#include <drizzled/select_max_min_finder_subselect.h>
56
#include <drizzled/select_singlerow_subselect.h>
57
#include <drizzled/select_subselect.h>
58
#include <drizzled/select_to_file.h>
59
#include <drizzled/session.h>
60
#include <drizzled/session/cache.h>
61
#include <drizzled/show.h>
62
#include <drizzled/sql_base.h>
63
#include <drizzled/table/singular.h>
64
#include <drizzled/table_proto.h>
65
#include <drizzled/tmp_table_param.h>
66
#include <drizzled/transaction_services.h>
67
#include <drizzled/user_var_entry.h>
68
#include <drizzled/util/functors.h>
69
#include <plugin/myisam/myisam.h>
40
#include "drizzled/plugin/scheduler.h"
41
#include "drizzled/plugin/authentication.h"
42
#include "drizzled/plugin/logging.h"
43
#include "drizzled/plugin/transactional_storage_engine.h"
44
#include "drizzled/probes.h"
45
#include "drizzled/table_proto.h"
46
#include "drizzled/db.h"
47
#include "drizzled/pthread_globals.h"
48
#include "drizzled/transaction_services.h"
49
#include "drizzled/drizzled.h"
51
#include "drizzled/table_share_instance.h"
53
#include "plugin/myisam/myisam.h"
54
#include "drizzled/internal/iocache.h"
55
#include "drizzled/internal/thread_var.h"
56
#include "drizzled/plugin/event_observer.h"
71
59
#include <algorithm>
76
#include <boost/filesystem.hpp>
77
#include <boost/checked_delete.hpp>
79
#include <drizzled/util/backtrace.h>
81
#include <drizzled/schema.h>
83
62
using namespace std;
85
namespace fs=boost::filesystem;
94
71
char empty_c_string[1]= {0}; /* used for not defined db */
96
73
const char * const Session::DEFAULT_WHERE= "field list";
74
extern pthread_key_t THR_Session;
75
extern pthread_key_t THR_Mem_root;
98
77
bool Key_part_spec::operator==(const Key_part_spec& other) const
100
79
return length == other.length &&
101
80
field_name.length == other.field_name.length &&
102
!my_strcasecmp(system_charset_info, field_name.str, other.field_name.str);
81
!strcmp(field_name.str, other.field_name.str);
105
84
Open_tables_state::Open_tables_state(uint64_t version_arg) :
105
int session_tablespace_op(const Session *session)
107
return test(session->tablespace_op);
111
Set the process info field of the Session structure.
113
This function is used by plug-ins. Internally, the
114
Session::set_proc_info() function should be used.
116
@see Session::set_proc_info
118
void set_session_proc_info(Session *session, const char *info)
120
session->set_proc_info(info);
123
const char *get_session_proc_info(Session *session)
125
return session->get_proc_info();
126
128
void **Session::getEngineData(const plugin::MonitoredInTransaction *monitored)
128
130
return static_cast<void **>(&ha_data[monitored->getId()].ha_ptr);
139
141
return session->options & test_options;
142
Session::Session(plugin::Client *client_arg, catalog::Instance::shared_ptr catalog_arg) :
144
int session_sql_command(const Session *session)
146
return (int) session->lex->sql_command;
149
enum_tx_isolation session_tx_isolation(const Session *session)
151
return (enum_tx_isolation)session->variables.tx_isolation;
154
Session::Session(plugin::Client *client_arg) :
143
155
Open_tables_state(refresh_version),
144
156
mem_root(&main_mem_root),
147
query(new std::string),
148
_schema(new std::string("")),
149
159
client(client_arg),
151
161
scheduler_arg(NULL),
152
162
lock_id(&main_lock_id),
154
security_ctx(identifier::User::make_shared()),
155
_where(Session::DEFAULT_WHERE),
156
dbug_sentry(Session_SENTRY_MAGIC),
158
command(COM_CONNECT),
160
_epoch(boost::gregorian::date(1970,1,1)),
161
_connect_time(boost::posix_time::microsec_clock::universal_time()),
163
164
ha_data(plugin::num_trx_monitored_objects),
166
concurrent_execute_allowed(true),
167
165
arg_of_last_insert_id_function(false),
168
166
first_successful_insert_id_in_prev_stmt(0),
169
167
first_successful_insert_id_in_cur_stmt(0),
170
168
limit_found_rows(0),
171
options(session_startup_options),
174
examined_row_count(0),
178
statement_id_counter(0),
182
_global_read_lock(NONE),
183
count_cuted_fields(CHECK_FIELD_ERROR_FOR_NULL),
185
170
some_tables_deleted(false),
186
171
no_errors(false),
188
173
is_fatal_error(false),
189
174
transaction_rollback_request(false),
190
175
is_fatal_sub_stmt_error(0),
176
derived_tables_processing(false),
191
177
tablespace_op(false),
192
derived_tables_processing(false),
195
180
transaction_message(NULL),
196
181
statement_message(NULL),
197
session_event_observers(NULL),
198
_catalog(catalog_arg),
182
session_event_observers(NULL)
184
memset(process_list_info, 0, PROCESS_LIST_WIDTH);
201
185
client->setSession(this);
206
190
will be re-initialized in init_for_queries().
208
192
memory::init_sql_alloc(&main_mem_root, memory::ROOT_MIN_BLOCK_SIZE, 0);
194
count_cuted_fields= CHECK_FIELD_ERROR_FOR_NULL;
209
199
cuted_fields= sent_row_count= row_count= 0L;
201
statement_id_counter= 0UL;
210
202
// Must be reset to handle error with Session's created for init of mysqld
211
203
lex->current_select= 0;
204
start_time=(time_t) 0;
206
utime_after_lock= 0L;
212
207
memset(&variables, 0, sizeof(variables));
213
213
scoreboard_index= -1;
214
dbug_sentry=Session_SENTRY_MAGIC;
214
215
cleanup_done= abort_on_warning= no_warnings_for_error= false;
216
217
/* query_cache init */
299
boost_unique_lock_t scopedLock(mysys_var->mutex);
304
pthread_mutex_lock(&mysys_var->mutex);
300
305
if (mysys_var->current_cond)
302
mysys_var->current_mutex->lock();
303
mysys_var->current_cond->notify_all();
304
mysys_var->current_mutex->unlock();
307
pthread_mutex_lock(mysys_var->current_mutex);
308
pthread_cond_broadcast(mysys_var->current_cond);
309
pthread_mutex_unlock(mysys_var->current_mutex);
311
pthread_mutex_unlock(&mysys_var->mutex);
308
314
void Session::pop_internal_handler()
360
364
this->checkSentry();
362
if (client and client->isConnected())
366
if (client->isConnected())
364
assert(security_ctx);
365
368
if (global_system_variables.log_warnings)
367
errmsg_printf(error::WARN, ER(ER_FORCING_CLOSE),
368
internal::my_progname,
370
security_ctx->username().c_str());
369
errmsg_printf(ERRMSG_LVL_WARN, ER(ER_FORCING_CLOSE),internal::my_progname,
371
(getSecurityContext().getUser().c_str() ?
372
getSecurityContext().getUser().c_str() : ""));
373
disconnect(0, false);
376
376
/* Close connection */
380
boost::checked_delete(client);
384
380
if (cleanup_done == false)
392
388
dbug_sentry= Session_SENTRY_GONE;
394
390
main_mem_root.free_root(MYF(0));
395
currentMemRoot().release();
396
currentSession().release();
391
pthread_setspecific(THR_Session, 0);
398
393
plugin::Logging::postEndDo(this);
399
394
plugin::EventObserver::deregisterSessionEvents(*this);
402
void Session::setClient(plugin::Client *client_arg)
405
client->setSession(this);
408
void Session::awake(Session::killed_state_t state_to_set)
410
if ((state_to_set == Session::KILL_QUERY) and (command == COM_SLEEP))
396
/* Ensure that no one is using Session */
397
LOCK_delete.unlock();
400
void Session::awake(Session::killed_state state_to_set)
413
402
this->checkSentry();
415
setKilled(state_to_set);
416
scheduler->killSession(this);
403
safe_mutex_assert_owner(&LOCK_delete);
405
killed= state_to_set;
418
406
if (state_to_set != Session::KILL_QUERY)
408
scheduler->killSession(this);
420
409
DRIZZLE_CONNECTION_DONE(thread_id);
425
boost_unique_lock_t scopedLock(mysys_var->mutex);
413
pthread_mutex_lock(&mysys_var->mutex);
428
415
This broadcast could be up in the air if the victim thread
429
416
exits the cond in the time between read and broadcast, but that is
430
417
ok since all we want to do is to make the victim thread get out
527
512
if (initGlobals() || authenticate())
533
518
prepareForQueries();
535
while (not client->haveError() && getKilled() != KILL_CONNECTION)
520
while (! client->haveError() && killed != KILL_CONNECTION)
537
if (not executeStatement())
522
if (! executeStatement())
544
bool Session::schedule(Session::shared_ptr &arg)
529
bool Session::schedule()
546
arg->scheduler= plugin::Scheduler::getScheduler();
547
assert(arg->scheduler);
551
long current_connections= connection_count;
553
if (current_connections > 0 and static_cast<uint64_t>(current_connections) > current_global_counters.max_used_connections)
531
scheduler= plugin::Scheduler::getScheduler();
534
connection_count.increment();
536
if (connection_count > current_global_counters.max_used_connections)
555
current_global_counters.max_used_connections= static_cast<uint64_t>(connection_count);
538
current_global_counters.max_used_connections= connection_count;
558
541
current_global_counters.connections++;
559
arg->thread_id= arg->variables.pseudo_thread_id= global_thread_id++;
561
session::Cache::singleton().insert(arg);
563
if (unlikely(plugin::EventObserver::connectSession(*arg)))
565
// We should do something about an error...
568
if (plugin::Scheduler::getScheduler()->addSession(arg))
570
DRIZZLE_CONNECTION_START(arg->getSessionId());
542
thread_id= variables.pseudo_thread_id= global_thread_id++;
544
LOCK_thread_count.lock();
545
getSessionList().push_back(this);
546
LOCK_thread_count.unlock();
548
if (scheduler->addSession(this))
550
DRIZZLE_CONNECTION_START(thread_id);
571
551
char error_message_buff[DRIZZLE_ERRMSG_SIZE];
573
arg->setKilled(Session::KILL_CONNECTION);
553
killed= Session::KILL_CONNECTION;
575
arg->status_var.aborted_connects++;
555
status_var.aborted_connects++;
577
557
/* Can't use my_error() since store_globals has not been called. */
578
558
/* TODO replace will better error message */
579
559
snprintf(error_message_buff, sizeof(error_message_buff),
580
560
ER(ER_CANT_CREATE_THREAD), 1);
581
arg->client->sendError(ER_CANT_CREATE_THREAD, error_message_buff);
561
client->sendError(ER_CANT_CREATE_THREAD, error_message_buff);
591
Is this session viewable by the current user?
593
bool Session::isViewable(identifier::User::const_reference user_arg) const
595
return plugin::Authorization::isAuthorized(user_arg, *this, false);
599
const char* Session::enter_cond(boost::condition_variable_any &cond, boost::mutex &mutex, const char* msg)
569
const char* Session::enter_cond(boost::condition_variable &cond, boost::mutex &mutex, const char* msg)
601
571
const char* old_msg = get_proc_info();
602
572
safe_mutex_assert_owner(mutex);
603
mysys_var->current_mutex = &mutex;
604
mysys_var->current_cond = &cond;
573
mysys_var->current_mutex = mutex.native_handle();
574
mysys_var->current_cond = cond.native_handle();
605
575
this->set_proc_info(msg);
614
584
locked (if that would not be the case, you'll get a deadlock if someone
615
585
does a Session::awake() on you).
617
mysys_var->current_mutex->unlock();
618
boost_unique_lock_t scopedLock(mysys_var->mutex);
587
pthread_mutex_unlock(mysys_var->current_mutex);
588
pthread_mutex_lock(&mysys_var->mutex);
619
589
mysys_var->current_mutex = 0;
620
590
mysys_var->current_cond = 0;
621
591
this->set_proc_info(old_msg);
592
pthread_mutex_unlock(&mysys_var->mutex);
624
595
bool Session::authenticate()
626
598
if (client->authenticate())
647
620
/* Change database if necessary */
648
if (not in_db.empty())
621
if (in_db && in_db[0])
650
identifier::Schema identifier(in_db);
651
if (schema::change(*this, identifier))
623
SchemaIdentifier identifier(in_db);
624
if (mysql_change_db(this, identifier))
653
/* change_db() has pushed the error message. */
626
/* mysql_change_db() has pushed the error message. */
658
password= not passwd_str.empty();
631
password= test(passwd_len); // remember for error messages
660
633
/* Ready to handle queries */
677
650
main_da.reset_diagnostics_area();
679
652
if (client->readCommand(&l_packet, &packet_length) == false)
684
if (getKilled() == KILL_CONNECTION)
655
if (killed == KILL_CONNECTION)
687
658
if (packet_length == 0)
690
l_command= static_cast<enum_server_command>(l_packet[0]);
661
l_command= (enum enum_server_command) (unsigned char) l_packet[0];
692
663
if (command >= COM_END)
693
664
command= COM_END; // Wrong command
695
666
assert(packet_length);
696
return not dispatch_command(l_command, this, l_packet+1, (uint32_t) (packet_length-1));
667
return ! dispatch_command(l_command, this, l_packet+1, (uint32_t) (packet_length-1));
699
670
bool Session::readAndStoreQuery(const char *in_packet, uint32_t in_packet_length)
705
676
in_packet_length--;
707
678
const char *pos= in_packet + in_packet_length; /* Point at end null */
708
while (in_packet_length > 0 && (pos[-1] == ';' || my_isspace(charset() ,pos[-1])))
679
while (in_packet_length > 0 &&
680
(pos[-1] == ';' || my_isspace(charset() ,pos[-1])))
711
683
in_packet_length--;
714
std::string *new_query= new std::string(in_packet, in_packet + in_packet_length);
715
// We can not be entirely sure _schema has a value
718
plugin::QueryRewriter::rewriteQuery(*_schema, *new_query);
720
query.reset(new_query);
721
_state.reset(new session::State(in_packet, in_packet_length));
686
query.assign(in_packet, in_packet + in_packet_length);
838
804
first_successful_insert_id_in_cur_stmt= 0;
839
805
substitute_null_with_insert_id= true;
842
807
arg_of_last_insert_id_function= false;
844
808
/* Free Items that were created during this execution */
848
_where= Session::DEFAULT_WHERE;
811
where= Session::DEFAULT_WHERE;
850
813
/* Reset the temporary shares we built */
851
for_each(temporary_shares.begin(),
852
temporary_shares.end(),
814
for (std::vector<TableShareInstance *>::iterator iter= temporary_shares.begin();
815
iter != temporary_shares.end(); iter++)
854
819
temporary_shares.clear();
931
896
Handling writing to file
932
897
************************************************************************/
934
void select_to_file::send_error(drizzled::error_t errcode,const char *err)
899
void select_to_file::send_error(uint32_t errcode,const char *err)
936
901
my_message(errcode, err, MYF(0));
939
(void) cache->end_io_cache();
904
(void) end_io_cache(cache);
940
905
(void) internal::my_close(file, MYF(0));
941
(void) internal::my_delete(path.file_string().c_str(), MYF(0)); // Delete file on error
906
(void) internal::my_delete(path, MYF(0)); // Delete file on error
1019
static int create_file(Session *session,
1020
fs::path &target_path,
1021
file_exchange *exchange,
1022
internal::IO_CACHE *cache)
984
static int create_file(Session *session, char *path, file_exchange *exchange, internal::IO_CACHE *cache)
1024
fs::path to_file(exchange->file_name);
1027
if (not to_file.has_root_directory())
987
uint32_t option= MY_UNPACK_FILENAME | MY_RELATIVE_PATH;
989
#ifdef DONT_ALLOW_FULL_LOAD_DATA_PATHS
990
option|= MY_REPLACE_DIR; // Force use of db directory
993
if (!internal::dirname_length(exchange->file_name))
1029
target_path= fs::system_complete(getDataHomeCatalog());
1030
util::string::const_shared_ptr schema(session->schema());
1031
if (schema and not schema->empty())
1033
int count_elements= 0;
1034
for (fs::path::iterator iter= to_file.begin();
1035
iter != to_file.end();
1036
++iter, ++count_elements)
1039
if (count_elements == 1)
1041
target_path /= *schema;
1044
target_path /= to_file;
995
strcpy(path, data_home_real);
996
if (! session->db.empty())
997
strncat(path, session->db.c_str(), FN_REFLEN-strlen(data_home_real)-1);
998
(void) internal::fn_format(path, exchange->file_name, path, "", option);
1048
target_path = exchange->file_name;
1051
if (not secure_file_priv.string().empty())
1053
if (target_path.file_string().substr(0, secure_file_priv.file_string().size()) != secure_file_priv.file_string())
1055
/* Write only allowed to dir or subdir specified by secure_file_priv */
1056
my_error(ER_OPTION_PREVENTS_STATEMENT, MYF(0), "--secure-file-priv");
1061
if (!access(target_path.file_string().c_str(), F_OK))
1001
(void) internal::fn_format(path, exchange->file_name, data_home_real, "", option);
1003
if (opt_secure_file_priv &&
1004
strncmp(opt_secure_file_priv, path, strlen(opt_secure_file_priv)))
1006
/* Write only allowed to dir or subdir specified by secure_file_priv */
1007
my_error(ER_OPTION_PREVENTS_STATEMENT, MYF(0), "--secure-file-priv");
1011
if (!access(path, F_OK))
1063
1013
my_error(ER_FILE_EXISTS_ERROR, MYF(0), exchange->file_name);
1066
1016
/* Create the file world readable */
1067
if ((file= internal::my_create(target_path.file_string().c_str(), 0666, O_WRONLY|O_EXCL, MYF(MY_WME))) < 0)
1017
if ((file= internal::my_create(path, 0666, O_WRONLY|O_EXCL, MYF(MY_WME))) < 0)
1069
1019
(void) fchmod(file, 0666); // Because of umask()
1070
if (cache->init_io_cache(file, 0L, internal::WRITE_CACHE, 0L, 1, MYF(MY_WME)))
1020
if (init_io_cache(cache, file, 0L, internal::WRITE_CACHE, 0L, 1, MYF(MY_WME)))
1072
1022
internal::my_close(file, MYF(0));
1073
internal::my_delete(target_path.file_string().c_str(), MYF(0)); // Delete file on error, it was just created
1023
internal::my_delete(path, MYF(0)); // Delete file on error, it was just created
1300
1246
for (; length > sizeof(space) ; length-=sizeof(space))
1302
1248
if (my_b_write(cache,(unsigned char*) space,sizeof(space)))
1305
1251
if (my_b_write(cache,(unsigned char*) space,length))
1309
1255
if (res && enclosed)
1311
1257
if (my_b_write(cache, (unsigned char*) exchange->enclosed->ptr(),
1312
1258
exchange->enclosed->length()))
1315
1261
if (--items_left)
1317
1263
if (my_b_write(cache, (unsigned char*) exchange->field_term->ptr(),
1318
1264
field_term_length))
1322
1268
if (my_b_write(cache,(unsigned char*) exchange->line_term->ptr(),
1323
1269
exchange->line_term->length()))
1485
1432
bool select_max_min_finder_subselect::cmp_decimal()
1487
1434
Item *maxmin= ((Item_singlerow_subselect *)item)->element_index(0);
1488
type::Decimal cval, *cvalue= cache->val_decimal(&cval);
1489
type::Decimal mval, *mvalue= maxmin->val_decimal(&mval);
1435
my_decimal cval, *cvalue= cache->val_decimal(&cval);
1436
my_decimal mval, *mvalue= maxmin->val_decimal(&mval);
1491
1438
return (cache->null_value && !maxmin->null_value) ||
1492
1439
(!cache->null_value && !maxmin->null_value &&
1493
class_decimal_cmp(cvalue, mvalue) > 0) ;
1440
my_decimal_cmp(cvalue, mvalue) > 0) ;
1494
1441
return (maxmin->null_value && !cache->null_value) ||
1495
1442
(!cache->null_value && !maxmin->null_value &&
1496
class_decimal_cmp(cvalue,mvalue) < 0);
1443
my_decimal_cmp(cvalue,mvalue) < 0);
1499
1446
bool select_max_min_finder_subselect::cmp_str()
1535
1482
void Session::end_statement()
1537
1484
/* Cleanup SQL processing state to reuse this statement in next query. */
1539
1486
query_cache_key= ""; // reset the cache key
1540
1487
resetResultsetMessage();
1543
1490
bool Session::copy_db_to(char **p_db, size_t *p_db_length)
1546
if (_schema and _schema->empty())
1548
my_message(ER_NO_DB_ERROR, ER(ER_NO_DB_ERROR), MYF(0));
1551
else if (not _schema)
1553
my_message(ER_NO_DB_ERROR, ER(ER_NO_DB_ERROR), MYF(0));
1558
*p_db= strmake(_schema->c_str(), _schema->size());
1559
*p_db_length= _schema->size();
1494
my_message(ER_NO_DB_ERROR, ER(ER_NO_DB_ERROR), MYF(0));
1497
*p_db= strmake(db.c_str(), db.length());
1498
*p_db_length= db.length();
1600
void Session::set_db(const std::string &new_db)
1538
bool Session::set_db(const std::string &new_db)
1602
1540
/* Do not reallocate memory if current chunk is big enough. */
1603
1541
if (new_db.length())
1605
_schema.reset(new std::string(new_db));
1609
_schema.reset(new std::string(""));
1553
Check the killed state of a user thread
1554
@param session user thread
1555
@retval 0 the user thread is active
1556
@retval 1 the user thread has been killed
1558
int session_killed(const Session *session)
1560
return(session->killed);
1564
const struct charset_info_st *session_charset(Session *session)
1566
return(session->charset());
1615
1570
Mark transaction to rollback and mark error as fatal to a sub-statement.
1617
1572
@param session Thread handle
1618
1573
@param all true <=> rollback main transaction.
1620
void Session::markTransactionForRollback(bool all)
1575
void mark_transaction_to_rollback(Session *session, bool all)
1622
is_fatal_sub_stmt_error= true;
1623
transaction_rollback_request= all;
1579
session->is_fatal_sub_stmt_error= true;
1580
session->transaction_rollback_request= all;
1626
void Session::disconnect(enum error_t errcode)
1584
void Session::disconnect(uint32_t errcode, bool should_lock)
1628
1586
/* Allow any plugins to cleanup their session variables */
1629
1587
plugin_sessionvar_cleanup(this);
1631
1589
/* If necessary, log any aborted or unauthorized connections */
1632
if (getKilled() || client->wasAborted())
1590
if (killed || client->wasAborted())
1634
1592
status_var.aborted_threads++;
1637
1595
if (client->wasAborted())
1639
if (not getKilled() && variables.log_warnings > 1)
1597
if (! killed && variables.log_warnings > 1)
1641
errmsg_printf(error::WARN, ER(ER_NEW_ABORTING_CONNECTION)
1599
SecurityContext *sctx= &security_ctx;
1601
errmsg_printf(ERRMSG_LVL_WARN, ER(ER_NEW_ABORTING_CONNECTION)
1643
, (_schema->empty() ? "unconnected" : _schema->c_str())
1644
, security_ctx->username().empty() == false ? security_ctx->username().c_str() : "unauthenticated"
1645
, security_ctx->address().c_str()
1603
, (db.empty() ? "unconnected" : db.c_str())
1604
, sctx->getUser().empty() == false ? sctx->getUser().c_str() : "unauthenticated"
1605
, sctx->getIp().c_str()
1646
1606
, (main_da.is_error() ? main_da.message() : ER(ER_UNKNOWN_ERROR)));
1650
setKilled(Session::KILL_CONNECTION);
1610
/* Close out our connection to the client */
1612
LOCK_thread_count.lock();
1613
killed= Session::KILL_CONNECTION;
1652
1614
if (client->isConnected())
1654
if (errcode != EE_OK)
1656
1618
/*my_error(errcode, ER(errcode));*/
1657
1619
client->sendError(errcode, ER(errcode));
1659
1621
client->close();
1624
(void) LOCK_thread_count.unlock();
1663
1627
void Session::reset_for_next_command()
1741
1705
If this is needed, use close_temporary_table()
1744
void Open_tables_state::nukeTable(Table *table)
1708
void Session::nukeTable(Table *table)
1746
1710
plugin::StorageEngine *table_type= table->getShare()->db_type();
1748
1712
table->free_io_cache();
1749
1713
table->delete_table();
1751
identifier::Table identifier(table->getShare()->getSchemaName(), table->getShare()->getTableName(), table->getShare()->getPath());
1715
TableIdentifier identifier(table->getShare()->getSchemaName(), table->getShare()->getTableName(), table->getShare()->getPath());
1752
1716
rm_temporary_table(table_type, identifier);
1754
boost::checked_delete(table->getMutableShare());
1718
delete table->getMutableShare();
1756
boost::checked_delete(table);
1720
/* This makes me sad, but we're allocating it via malloc */
1759
1724
/** Clear most status variables. */
1772
1737
user_var_entry *Session::getVariable(LEX_STRING &name, bool create_if_not_exists)
1774
return getVariable(std::string(name.str, name.length), create_if_not_exists);
1777
user_var_entry *Session::getVariable(const std::string &name, bool create_if_not_exists)
1782
UserVars::iterator iter= user_vars.find(name);
1783
if (iter != user_vars.end())
1784
return (*iter).second;
1786
if (not create_if_not_exists)
1789
1739
user_var_entry *entry= NULL;
1790
entry= new (nothrow) user_var_entry(name.c_str(), query_id);
1795
std::pair<UserVars::iterator, bool> returnable= user_vars.insert(make_pair(name, entry));
1797
if (not returnable.second)
1799
boost::checked_delete(entry);
1740
UserVarsRange ppp= user_vars.equal_range(std::string(name.str, name.length));
1742
for (UserVars::iterator iter= ppp.first;
1743
iter != ppp.second; ++iter)
1745
entry= (*iter).second;
1748
if ((entry == NULL) && create_if_not_exists)
1750
entry= new (nothrow) user_var_entry(name.str, query_id);
1755
std::pair<UserVars::iterator, bool> returnable= user_vars.insert(make_pair(std::string(name.str, name.length), entry));
1757
if (not returnable.second)
1805
void Session::setVariable(const std::string &name, const std::string &value)
1807
user_var_entry *updateable_var= getVariable(name.c_str(), true);
1810
updateable_var->update_hash(false,
1811
(void*)value.c_str(),
1812
static_cast<uint32_t>(value.length()), STRING_RESULT,
1814
DERIVATION_IMPLICIT, false);
1818
void Open_tables_state::mark_temp_tables_as_free_for_reuse()
1767
void Session::mark_temp_tables_as_free_for_reuse()
1820
1769
for (Table *table= temporary_tables ; table ; table= table->getNext())
1822
if (table->query_id == getQueryId())
1771
if (table->query_id == query_id)
1824
1773
table->query_id= 0;
1825
1774
table->cursor->ha_reset();
1883
1833
handled either before writing a query log event (inside
1884
1834
binlog_query()) or when preparing a pending event.
1836
mysql_unlock_tables(this, lock);
1890
Note that we need to hold table::Cache::singleton().mutex() while changing the
1840
Note that we need to hold LOCK_open while changing the
1891
1841
open_tables list. Another thread may work on it.
1892
(See: table::Cache::singleton().removeTable(), wait_completed_table())
1842
(See: remove_table_from_cache(), mysql_wait_completed_table())
1893
1843
Closing a MERGE child before the parent would be fatal if the
1894
1844
other thread tries to abort the MERGE lock in between.
1924
1874
if (not lock_tables(tables, counter, &need_reopen))
1927
1876
if (not need_reopen)
1930
1878
close_tables_for_reopen(&tables);
1933
if ((handle_derived(lex, &derived_prepare) || (handle_derived(lex, &derived_filling))))
1880
if ((mysql_handle_derived(lex, &mysql_derived_prepare) ||
1881
(fill_derived_tables() &&
1882
mysql_handle_derived(lex, &mysql_derived_filling))))
1888
bool Session::openTables(TableList *tables, uint32_t flags)
1891
bool ret= fill_derived_tables();
1892
assert(ret == false);
1893
if (open_tables_from_list(&tables, &counter, flags) ||
1894
mysql_handle_derived(lex, &mysql_derived_prepare))
1942
1904
might be an issue (lame engines).
1945
bool Open_tables_state::rm_temporary_table(const identifier::Table &identifier, bool best_effort)
1907
bool Session::rm_temporary_table(TableIdentifier &identifier, bool best_effort)
1947
if (not plugin::StorageEngine::dropTable(*static_cast<Session *>(this), identifier))
1909
if (plugin::StorageEngine::dropTable(*this, identifier))
1949
1911
if (not best_effort)
1952
identifier.getSQLPath(path);
1953
errmsg_printf(error::WARN, _("Could not remove temporary table: '%s', error: %d"),
1954
path.c_str(), errno);
1913
errmsg_printf(ERRMSG_LVL_WARN, _("Could not remove temporary table: '%s', error: %d"),
1914
identifier.getSQLPath().c_str(), errno);
1963
bool Open_tables_state::rm_temporary_table(plugin::StorageEngine *base, const identifier::Table &identifier)
1923
bool Session::rm_temporary_table(plugin::StorageEngine *base, TableIdentifier &identifier)
1965
drizzled::error_t error;
1968
if (not plugin::StorageEngine::dropTable(*static_cast<Session *>(this), *base, identifier, error))
1927
if (plugin::StorageEngine::dropTable(*this, *base, identifier))
1971
identifier.getSQLPath(path);
1972
errmsg_printf(error::WARN, _("Could not remove temporary table: '%s', error: %d"),
1973
path.c_str(), error);
1929
errmsg_printf(ERRMSG_LVL_WARN, _("Could not remove temporary table: '%s', error: %d"),
1930
identifier.getSQLPath().c_str(), errno);
2006
1963
cerr << "\t\t Proto " << proto->schema() << " " << proto->name() << "\n";
2010
1966
cerr << "\tTabl;e Name " << table->getShare()->getSchemaName() << "." << table->getShare()->getTableName() << " : " << answer << "\n";
2015
table::Singular *Session::getInstanceTable()
2017
temporary_shares.push_back(new table::Singular()); // This will not go into the tableshare cache, so no key is used.
2019
table::Singular *tmp_share= temporary_shares.back();
2028
Create a reduced Table object with properly set up Field list from a
2029
list of field definitions.
2031
The created table doesn't have a table Cursor associated with
2032
it, has no keys, no group/distinct, no copy_funcs array.
2033
The sole purpose of this Table object is to use the power of Field
2034
class to read/write data to/from table->getInsertRecord(). Then one can store
2035
the record in any container (RB tree, hash, etc).
2036
The table is created in Session mem_root, so are the table's fields.
2037
Consequently, if you don't BLOB fields, you don't need to free it.
2039
@param session connection handle
2040
@param field_list list of column definitions
2043
0 if out of memory, Table object in case of success
2045
table::Singular *Session::getInstanceTable(List<CreateField> &field_list)
2047
temporary_shares.push_back(new table::Singular(this, field_list)); // This will not go into the tableshare cache, so no key is used.
2049
table::Singular *tmp_share= temporary_shares.back();
2058
static const std::string NONE= "NONE";
2059
static const std::string GOT_GLOBAL_READ_LOCK= "HAS GLOBAL READ LOCK";
2060
static const std::string MADE_GLOBAL_READ_LOCK_BLOCK_COMMIT= "HAS GLOBAL READ LOCK WITH BLOCKING COMMIT";
2062
const std::string &type(drizzled::Session::global_read_lock_t type)
2068
case Session::GOT_GLOBAL_READ_LOCK:
2069
return GOT_GLOBAL_READ_LOCK;
2070
case Session::MADE_GLOBAL_READ_LOCK_BLOCK_COMMIT:
2071
return MADE_GLOBAL_READ_LOCK_BLOCK_COMMIT;
2075
size_t max_string_length(drizzled::Session::global_read_lock_t)
2077
return MADE_GLOBAL_READ_LOCK_BLOCK_COMMIT.size();
2080
} /* namespace display */
1970
bool Session::storeTableMessage(const TableIdentifier &identifier, message::Table &table_message)
1972
table_message_cache.insert(make_pair(identifier.getPath(), table_message));
1977
bool Session::removeTableMessage(const TableIdentifier &identifier)
1979
TableMessageCache::iterator iter;
1981
iter= table_message_cache.find(identifier.getPath());
1983
if (iter == table_message_cache.end())
1986
table_message_cache.erase(iter);
1991
bool Session::getTableMessage(const TableIdentifier &identifier, message::Table &table_message)
1993
TableMessageCache::iterator iter;
1995
iter= table_message_cache.find(identifier.getPath());
1997
if (iter == table_message_cache.end())
2000
table_message.CopyFrom(((*iter).second));
2005
bool Session::doesTableMessageExist(const TableIdentifier &identifier)
2007
TableMessageCache::iterator iter;
2009
iter= table_message_cache.find(identifier.getPath());
2011
if (iter == table_message_cache.end())
2019
bool Session::renameTableMessage(const TableIdentifier &from, const TableIdentifier &to)
2021
TableMessageCache::iterator iter;
2023
table_message_cache[to.getPath()]= table_message_cache[from.getPath()];
2025
iter= table_message_cache.find(to.getPath());
2027
if (iter == table_message_cache.end())
2032
(*iter).second.set_schema(to.getSchemaName());
2033
(*iter).second.set_name(to.getTableName());
2038
TableShareInstance *Session::getTemporaryShare(TableIdentifier::Type type_arg)
2040
temporary_shares.push_back(new TableShareInstance(type_arg)); // This will not go into the tableshare cache, so no key is used.
2042
TableShareInstance *tmp_share= temporary_shares.back();
2082
2049
} /* namespace drizzled */