emgauwa/core-legacy
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add: database transactions

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This commit is contained in:
Tobias Reisinger 2020-08-15 12:13:03 +02:00
parent 7fa462ef1d
commit 7c6eed8dc2
8 changed files with 119 additions and 30 deletions
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2
CMakeLists.txt
View file

@ -1,6 +1,6 @@
cmake_minimum_required (VERSION 3.7)
project(core
VERSION 0.2.11
VERSION 0.2.12
LANGUAGES C)
add_executable(core src/main.c)

16
include/database.h
View file

@ -5,7 +5,23 @@
extern sqlite3 *global_database;
void
database_init();
void
database_free();
int
database_migrate();
int
database_transaction_begin();
void
database_transaction_commit();
void
database_transaction_rollback();
#endif /* CORE_DATABASE_H */

56
src/database.c
View file

@ -7,6 +7,33 @@
#include <sql/migration_0.h>
sqlite3 *global_database;
static int in_transaction;
void
database_init()
{
int rc = sqlite3_open(global_config.database, &global_database);
if(rc)
{
LOGGER_CRIT("can't open database: %s\n", sqlite3_errmsg(global_database));
exit(1);
}
if(database_migrate())
{
exit(1);
}
sqlite3_exec(global_database, "PRAGMA foreign_keys = ON", 0, 0, 0);
in_transaction = 0;
}
void
database_free()
{
sqlite3_close(global_database);
}
int
database_migrate()
@ -65,3 +92,32 @@ database_migrate()
return rc != SQLITE_DONE;
}
int
database_transaction_begin()
{
if(!in_transaction)
{
LOGGER_DEBUG("beginning transaction\n");
sqlite3_exec(global_database, "BEGIN TRANSACTION;", NULL, NULL, NULL);
in_transaction = 1;
return 1;
}
return 0;
}
void
database_transaction_commit()
{
LOGGER_DEBUG("commiting transaction\n");
sqlite3_exec(global_database, "COMMIT TRANSACTION;", NULL, NULL, NULL);
in_transaction = 0;
}
void
database_transaction_rollback()
{
LOGGER_DEBUG("rolling back transaction\n");
sqlite3_exec(global_database, "ROLLBACK TRANSACTION;", NULL, NULL, NULL);
in_transaction = 0;
}

22
src/main.c
View file

@ -27,8 +27,7 @@ terminate(int signum)
mg_mgr_free(&mgr);
sqlite3_close(global_database);
database_free();
router_free();
status_free();
cache_free();
@ -133,26 +132,9 @@ main(int argc, const char** argv)
helper_drop_privileges();
/******************** SETUP DATABASE ********************/
int rc = sqlite3_open(global_config.database, &global_database);
if(rc)
{
LOGGER_CRIT("can't open database: %s\n", sqlite3_errmsg(global_database));
return 1;
}
if(database_migrate())
{
terminate(1);
}
sqlite3_exec(global_database, "PRAGMA foreign_keys = ON", 0, 0, 0);
/******************** INIT COMPONENTS ********************/
database_init();
cache_init();
router_init();
status_init();

12
src/models/controller.c
View file

@ -116,6 +116,8 @@ controller_db_select(sqlite3_stmt *stmt)
int
controller_save(controller_t *controller)
{
int opened_transaction = database_transaction_begin();
sqlite3_stmt *stmt;
if(controller->id)
{
@ -138,6 +140,11 @@ controller_save(controller_t *controller)
{
LOGGER_ERR("error updating data: %s\n", sqlite3_errmsg(global_database));
}
if(opened_transaction)
{
database_transaction_rollback();
}
}
else
{
@ -145,6 +152,11 @@ controller_save(controller_t *controller)
{
controller->id = sqlite3_last_insert_rowid(global_database);
}
if(opened_transaction)
{
database_transaction_commit();
}
}
cache_invalidate_controller(controller->id);

25
src/models/relay.c
View file

@ -126,6 +126,8 @@ relay_db_select(sqlite3_stmt *stmt)
int
relay_save(relay_t *relay)
{
int opened_transaction = database_transaction_begin();
sqlite3_stmt *stmt;
if(relay->id)
{
@ -148,6 +150,11 @@ relay_save(relay_t *relay)
{
LOGGER_ERR("error updating data: %s\n", sqlite3_errmsg(global_database));
}
if(opened_transaction)
{
database_transaction_rollback();
}
}
else
{
@ -155,16 +162,20 @@ relay_save(relay_t *relay)
{
relay->id = sqlite3_last_insert_rowid(global_database);
}
}
LOGGER_DEBUG("cleaning relay_schedule junction\n");
junction_relay_schedule_remove_for_relay(relay->id);
LOGGER_DEBUG("cleaning relay_schedule junction\n");
junction_relay_schedule_remove_for_relay(relay->id);
LOGGER_DEBUG("rebuilding relay_schedule junction\n");
for(int i = 0; i < 7; ++i)
{
junction_relay_schedule_insert(i, relay->id, relay->schedules[i]->id);
}
LOGGER_DEBUG("rebuilding relay_schedule junction\n");
for(int i = 0; i < 7; ++i)
{
junction_relay_schedule_insert(i, relay->id, relay->schedules[i]->id);
if(opened_transaction)
{
database_transaction_commit();
}
}
cache_invalidate_relay(relay->id);

12
src/models/schedule.c
View file

@ -112,6 +112,8 @@ schedule_db_select(sqlite3_stmt *stmt)
int
schedule_save(schedule_t *schedule)
{
int opened_transaction = database_transaction_begin();
sqlite3_stmt *stmt;
if(schedule->id)
{
@ -134,6 +136,11 @@ schedule_save(schedule_t *schedule)
{
LOGGER_ERR("error updating data: %s\n", sqlite3_errmsg(global_database));
}
if(opened_transaction)
{
database_transaction_rollback();
}
}
else
{
@ -141,6 +148,11 @@ schedule_save(schedule_t *schedule)
{
schedule->id = sqlite3_last_insert_rowid(global_database);
}
if(opened_transaction)
{
database_transaction_commit();
}
}
cache_invalidate_schedule(schedule->id);

4
tests/run_tests.sh
View file

@ -8,7 +8,7 @@ alias valgrind_emgauwa="valgrind $2 --log-file=$working_dir/valgrind.log"
rm -rf $working_bak
mv $working_dir $working_bak
[ -d $working_dir ] && mv $working_dir $working_bak
mkdir -p $working_dir
cd $working_dir
@ -53,7 +53,7 @@ core_id=$!
# wait for start
sleep 3;
sleep 5;
curl -s -o /dev/null --retry 5 --retry-all-errors --retry-connrefused http://localhost:5000/api/v1/tags