@n8n/typeorm
Version:
Data-Mapper ORM for TypeScript, ES7, ES6, ES5. Supports MySQL, PostgreSQL, MariaDB, SQLite, MS SQL Server, Oracle, MongoDB databases.
47 lines (46 loc) • 1.66 kB
TypeScript
import type { Database as Sqlite3Database } from "sqlite3";
/**
* Represents a pool of connections for SQLite databases.
* The pool is responsible for managing the connections and
* ensuring that connections are not leaked. Connections can
* be leased from the pool for use and must be released back.
*/
export interface SqliteConnectionPool {
runExclusive<T>(dbLeaseHolder: DbLeaseHolder, callback: (leasedDbConnection: DbLease) => Promise<T>): Promise<T>;
leaseConnection(dbLeaseHolder: DbLeaseHolder): Promise<DbLease>;
releaseConnection(leasedDbConnection: DbLease): void;
invalidateConnection(leasedDbConnection: DbLease): void;
close(): Promise<void>;
}
/**
* Represents a leased database connection. The connection is
* leased from the owner to the lease holder, and must be
* released back to the owner when no longer needed.
*/
export interface DbLease {
readonly connection: Sqlite3Database;
/**
* Marks the connection as invalid. This will cause the
* connection to be released and a new connection to be
* created when the lease holder requests a new connection.
*/
markAsInvalid(): void;
/**
* Releases the connection back to the pool
*/
release(): void;
/**
* Signals that the lease holder should release the lease ASAP
*/
requestRelease(): void;
}
export interface DbLeaseOwner {
invalidateConnection(leasedDbConnection: DbLease): void;
releaseConnection(leasedDbConnection: DbLease): void;
}
export interface DbLeaseHolder {
/**
* Signals that the lease holder should release the lease ASAP
*/
requestRelease(): void;
}