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add: database functions and generalisation

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This commit is contained in:
Tobias Reisinger 2020-08-15 13:10:17 +02:00
parent 7c6eed8dc2
commit 14c35a4227
8 changed files with 193 additions and 149 deletions
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2
CMakeLists.txt
View file

@ -1,6 +1,6 @@
cmake_minimum_required (VERSION 3.7)
project(core
VERSION 0.2.12
VERSION 0.2.13
LANGUAGES C)
add_executable(core src/main.c)

13
include/database.h
View file

@ -24,4 +24,17 @@ database_transaction_commit();
void
database_transaction_rollback();
int
database_helper_get_id(sqlite3_stmt *stmt);
int*
database_helper_get_ids(sqlite3_stmt *stmt);
char*
database_helper_get_string(sqlite3_stmt *stmt);
char**
database_helper_get_strings(sqlite3_stmt *stmt);
#endif /* CORE_DATABASE_H */

3
include/models/relay.h
View file

@ -56,4 +56,7 @@ relay_get_all();
relay_t**
relay_get_by_controller_id(int controller_id);
int
relay_get_controller_id_for_relay(int relay_id);
#endif /* CORE_RELAY_H */

7
src/cache.c
View file

@ -169,11 +169,10 @@ cache_invalidate_relay(int relay_id)
sprintf(key, "relay_json:%d", relay_id);
cache_invalidate(key);
relay_t *relay = relay_get_by_id(relay_id);
if(relay)
int controller_id = relay_get_controller_id_for_relay(relay_id);
if(controller_id)
{
cache_invalidate_controller(relay->controller_id);
relay_free(relay);
cache_invalidate_controller(controller_id);
}
}

155
src/database.c
View file

@ -121,3 +121,158 @@ database_transaction_rollback()
sqlite3_exec(global_database, "ROLLBACK TRANSACTION;", NULL, NULL, NULL);
in_transaction = 0;
}
int
database_helper_get_id(sqlite3_stmt *stmt)
{
int result = 0;
for(;;)
{
int s;
s = sqlite3_step(stmt);
if (s == SQLITE_ROW)
{
result = sqlite3_column_int(stmt, 0);
}
else
{
if (s == SQLITE_DONE)
{
break;
}
else
{
LOGGER_ERR("error selecting id from database: %s\n", sqlite3_errstr(s));
sqlite3_finalize(stmt);
return 0;
}
}
}
sqlite3_finalize(stmt);
return result;
}
int*
database_helper_get_ids(sqlite3_stmt *stmt)
{
int *result = malloc(sizeof(int));
int new_id;
int row = 0;
for(;;)
{
int s;
s = sqlite3_step(stmt);
if (s == SQLITE_ROW)
{
new_id = sqlite3_column_int(stmt, 0);
if(new_id != 0) // found row for other target (relay <> schedule)
{
row++;
result = (int*)realloc(result, sizeof(int) * (row + 1));
result[row - 1] = new_id;
}
}
else
{
if (s == SQLITE_DONE)
{
break;
}
else
{
LOGGER_ERR("error selecting ids from database: %s\n", sqlite3_errstr(s));
sqlite3_finalize(stmt);
return NULL;
}
}
}
sqlite3_finalize(stmt);
result[row] = 0;
return result;
}
char*
database_helper_get_string(sqlite3_stmt *stmt)
{
char *result = NULL;
for(;;)
{
int s;
s = sqlite3_step(stmt);
if (s == SQLITE_ROW)
{
const char *found_string = (const char *)sqlite3_column_text(stmt, 0);
result = (char*)malloc(sizeof(char) * (strlen(found_string) + 1));
strcpy(result, found_string);
}
else
{
if (s == SQLITE_DONE)
{
break;
}
else
{
LOGGER_ERR("error selecting string from database: %s\n", sqlite3_errstr(s));
sqlite3_finalize(stmt);
return NULL;
}
}
}
sqlite3_finalize(stmt);
return result;
}
char**
database_helper_get_strings(sqlite3_stmt *stmt)
{
char **result = malloc(sizeof(char*));
int row = 0;
for(;;)
{
int s;
s = sqlite3_step(stmt);
if (s == SQLITE_ROW)
{
const char *new_string = (const char *)sqlite3_column_text(stmt, 0);
int new_string_len = strlen(new_string);
row++;
result = (char**)realloc(result, sizeof(char*) * (row + 1));
result[row - 1] = malloc(sizeof(char) * (new_string_len + 1));
strcpy(result[row - 1], new_string);
}
else
{
if(s == SQLITE_DONE)
{
break;
}
else
{
LOGGER_ERR("error selecting strings from database: %s\n", sqlite3_errstr(s));
break;
}
}
}
sqlite3_finalize(stmt);
result[row] = NULL;
return result;
}

53
src/models/junction_tag.c
View file

@ -56,51 +56,6 @@ junction_tag_insert(int tag_id, int relay_id, int schedule_id)
return 0;
}
static int*
get_ids(sqlite3_stmt *stmt)
{
int *ids = malloc(sizeof(int));
int new_id;
int row = 0;
while(true)
{
int s;
s = sqlite3_step(stmt);
if (s == SQLITE_ROW)
{
new_id = sqlite3_column_int(stmt, 0);
if(new_id != 0) // found row for other target (relay <> schedule)
{
row++;
ids = (int*)realloc(ids, sizeof(int) * (row + 1));
ids[row - 1] = new_id;
}
}
else
{
if (s == SQLITE_DONE)
{
break;
}
else
{
LOGGER_ERR("error selecting relays from database: %s\n", sqlite3_errstr(s));
sqlite3_finalize(stmt);
return NULL;
}
}
}
sqlite3_finalize(stmt);
ids[row] = 0;
return ids;
}
int*
junction_tag_get_relays_for_tag_id(int tag_id)
{
@ -109,7 +64,7 @@ junction_tag_get_relays_for_tag_id(int tag_id)
sqlite3_prepare_v2(global_database, "SELECT relay_id FROM junction_tag WHERE tag_id=?1;", -1, &stmt, NULL);
sqlite3_bind_int(stmt, 1, tag_id);
return get_ids(stmt);
return database_helper_get_ids(stmt);
}
int*
@ -120,7 +75,7 @@ junction_tag_get_schedules_for_tag_id(int tag_id)
sqlite3_prepare_v2(global_database, "SELECT schedule_id FROM junction_tag WHERE tag_id=?1;", -1, &stmt, NULL);
sqlite3_bind_int(stmt, 1, tag_id);
return get_ids(stmt);
return database_helper_get_ids(stmt);
}
int*
@ -131,7 +86,7 @@ junction_tag_get_tags_for_relay_id(int relay_id)
sqlite3_prepare_v2(global_database, "SELECT tag_id FROM junction_tag WHERE relay_id=?1;", -1, &stmt, NULL);
sqlite3_bind_int(stmt, 1, relay_id);
return get_ids(stmt);
return database_helper_get_ids(stmt);
}
int*
@ -142,7 +97,7 @@ junction_tag_get_tags_for_schedule_id(int schedule_id)
sqlite3_prepare_v2(global_database, "SELECT tag_id FROM junction_tag WHERE schedule_id=?1;", -1, &stmt, NULL);
sqlite3_bind_int(stmt, 1, schedule_id);
return get_ids(stmt);
return database_helper_get_ids(stmt);
}
int

11
src/models/relay.c
View file

@ -430,3 +430,14 @@ relay_get_by_controller_id(int controller_id)
return relay_db_select(stmt);
}
int
relay_get_controller_id_for_relay(int relay_id)
{
sqlite3_stmt *stmt;
sqlite3_prepare_v2(global_database, "SELECT controller_id FROM relays WHERE relay_id=?1;", -1, &stmt, NULL);
sqlite3_bind_int(stmt, 1, relay_id);
return database_helper_get_id(stmt);
}

98
src/models/tag.c
View file

@ -47,37 +47,7 @@ tag_get_tag(int id)
sqlite3_prepare_v2(global_database, "SELECT tag FROM tags WHERE id=?1;", -1, &stmt, NULL);
sqlite3_bind_int(stmt, 1, id);
char *result = NULL;
while(1)
{
int s;
s = sqlite3_step(stmt);
if (s == SQLITE_ROW)
{
const char *found_tag = (const char *)sqlite3_column_text(stmt, 0);
result = (char*)malloc(sizeof(char) * (strlen(found_tag) + 1));
strcpy(result, found_tag);
}
else
{
if (s == SQLITE_DONE)
{
break;
}
else
{
LOGGER_ERR("error selecting tags from database: %s\n", sqlite3_errstr(s));
sqlite3_finalize(stmt);
return NULL;
}
}
}
sqlite3_finalize(stmt);
return result;
return database_helper_get_string(stmt);
}
char**
@ -87,41 +57,7 @@ tag_get_all()
sqlite3_prepare_v2(global_database, "SELECT tag FROM tags;", -1, &stmt, NULL);
char **all_tags = malloc(sizeof(char*));
int row = 0;
while(true)
{
int s;
s = sqlite3_step(stmt);
if (s == SQLITE_ROW)
{
const char *new_tag = (const char *)sqlite3_column_text(stmt, 0);
int new_tag_len = strlen(new_tag);
row++;
all_tags = (char**)realloc(all_tags, sizeof(char*) * (row + 1));
all_tags[row - 1] = malloc(sizeof(char) * (new_tag_len + 1));
strcpy(all_tags[row - 1], new_tag);
}
else
{
if(s == SQLITE_DONE)
{
break;
}
else
{
LOGGER_ERR("error selecting tags from database: %s\n", sqlite3_errstr(s));
break;
}
}
}
sqlite3_finalize(stmt);
all_tags[row] = NULL;
return all_tags;
return database_helper_get_strings(stmt);
}
int
@ -132,35 +68,7 @@ tag_get_id(const char *tag)
sqlite3_prepare_v2(global_database, "SELECT id FROM tags WHERE tag=?1;", -1, &stmt, NULL);
sqlite3_bind_text(stmt, 1, tag, -1, SQLITE_STATIC);
int result = 0;
while(1)
{
int s;
s = sqlite3_step(stmt);
if (s == SQLITE_ROW)
{
result = sqlite3_column_int(stmt, 0);
}
else
{
if (s == SQLITE_DONE)
{
break;
}
else
{
LOGGER_ERR("error selecting tags from database: %s\n", sqlite3_errstr(s));
sqlite3_finalize(stmt);
return 0;
}
}
}
sqlite3_finalize(stmt);
return result;
return database_helper_get_id(stmt);
}
int