You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

77 lines
1.8 KiB

#ifndef WALLET_DB_H
#define WALLET_DB_H
#include "config.h"
#include "daemon/log.h"
#include <sqlite3.h>
#include <stdbool.h>
struct db {
char *filename;
bool in_transaction;
const char *err;
sqlite3 *sql;
};
/**
* db_setup - Open a the lightningd database and update the schema
*
* Opens the database, creating it if necessary, and applying
* migrations until the schema is updated to the current state.
*
* Params:
* @ctx: the tal_t context to allocate from
* @log: where to log messages to
*/
struct db *db_setup(const tal_t *ctx);
/**
* db_query - Prepare and execute a query, and return the result
*/
sqlite3_stmt *PRINTF_FMT(3, 4)
db_query(const char *caller, struct db *db, const char *fmt, ...);
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);
/**
* db_set_intvar - Set an integer variable in the database
*
* Utility function to store generic integer values in the
* database.
*/
bool db_set_intvar(struct db *db, char *varname, s64 val);
/**
* db_get_intvar - Retrieve an integer variable from the database
*
* Either returns the value in the database, or @defval if
* the query failed or no such variable exists.
*/
s64 db_get_intvar(struct db *db, char *varname, s64 defval);
#endif /* WALLET_DB_H */