Method checkIn

src/cmap/connection_pool.ts:384–409

* Check a connection into the pool. * * @param connection - The connection to check in

(connection: Connection)

   * @param connection - The connection to check in
   */
  checkIn(connection: Connection): void {
    if (!this.checkedOut.has(connection)) {
      return;
    }
    const poolClosed = this.closed;
    const stale = this.connectionIsStale(connection);
    const willDestroy = !!(poolClosed || stale || connection.closed);

    if (!willDestroy) {
      connection.markAvailable();
      this.connections.unshift(connection);
    }

    this.checkedOut.delete(connection);
    this.emitAndLog(
      ConnectionPool.CONNECTION_CHECKED_IN,
      new ConnectionCheckedInEvent(this, connection)
    );

    if (willDestroy) {
      const reason = connection.closed ? 'error' : poolClosed ? 'poolClosed' : 'stale';
      this.destroyConnection(connection, reason);
    }

    queueMicrotask(() => this.processWaitQueue());
  }

  /**
   * Clear the pool