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wallet: Expose transactional interface for db

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This commit is contained in:
Christian Decker 2017-05-31 15:50:36 +02:00 • committed by Rusty Russell
parent 5396335363
commit 19a4e7f542
2 changed files with 25 additions and 19 deletions
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22
wallet/db.c
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@ -87,14 +87,7 @@ static void db_clear_error(struct db *db)
static void close_db(struct db *db) { sqlite3_close(db->sql); }
/**
* db_begin_transaction - Begin a transaction
*
* We do not support nesting multiple transactions, so make sure that
* we are not in a transaction when calling this. Returns true if we
* succeeded in starting a transaction.
*/
static bool db_begin_transaction(struct db *db)
bool db_begin_transaction(struct db *db)
{
assert(!db->in_transaction);
/* Clear any errors from previous transactions and
@ -104,13 +97,7 @@ static bool db_begin_transaction(struct db *db)
return db->in_transaction;
}
/**
* db_commit_transaction - Commit a running transaction
*
* Requires that we are currently in a transaction. Returns whether
* the commit was successful.
*/
static bool db_commit_transaction(struct db *db)
bool db_commit_transaction(struct db *db)
{
assert(db->in_transaction);
bool ret = db_exec(__func__, db, "COMMIT;");
@ -118,10 +105,7 @@ static bool db_commit_transaction(struct db *db)
return ret;
}
/**
* db_rollback_transaction - Whoops... undo! undo!
*/
static bool db_rollback_transaction(struct db *db)
bool db_rollback_transaction(struct db *db)
{
assert(db->in_transaction);
bool ret = db_exec(__func__, db, "ROLLBACK;");

22
wallet/db.h
View file

@ -35,4 +35,26 @@ sqlite3_stmt *PRINTF_FMT(3, 4)
bool PRINTF_FMT(3, 4)
db_exec(const char *caller, struct db *db, const char *fmt, ...);
/**
* db_begin_transaction - Begin a transaction
*
* We do not support nesting multiple transactions, so make sure that
* we are not in a transaction when calling this. Returns true if we
* succeeded in starting a transaction.
*/
bool db_begin_transaction(struct db *db);
/**
* db_commit_transaction - Commit a running transaction
*
* Requires that we are currently in a transaction. Returns whether
* the commit was successful.
*/
bool db_commit_transaction(struct db *db);
/**
* db_rollback_transaction - Whoops... undo! undo!
*/
bool db_rollback_transaction(struct db *db);
#endif /* WALLET_DB_H */