parking_lot.parking_lot.parking_lot.HandleEvent trait used to listen for various events from the pool for monitoring purposes.parking_lot.Pool configuration has changed. Rather than constructing a Config and passing it to the Pool constructor, you now configure a Builder which then directly constructs the pool:
// In 0.7.x let config = Config::builder() .min_idle(3) .build(); let pool = Pool::new(config, manager)?; // In 0.8.x let pool = Pool::builder() .min_idle(3) .build(manager)?;
The Pool::new method can be used to construct a Pool with default settings:
// In 0.7.x let config = Config::default(); let pool = Pool::new(config, manager)?; // In 0.8.x let pool = Pool::new(manager)?;
The initialization_fail_fast configuration option has been replaced with separate Builder::build and Builder::build_unchecked methods. The second returns a Pool directly without wrapping it in a Result, and does not check that connections are being successfully opened:
// In 0.7.x let config = Config::builder() .initialization_fail_fast(false) .build(); let pool = Pool::new(config, manager).unwrap(); // In 0.8.x let pool = Pool::builder().build_unchecked(manager);
The InitializationError and GetTimeout error types have been merged into a unified Error type.
The Pool::config method has been replaced with accessor methods on Pool to directly access configuration, such as Pool::min_idle.
The scheduled_thread_pool crate has been upgraded from 0.1 to 0.2.
Builder::num_threads method has been removed. Construct a ScheduledThreadPool and set it via Builder::thread_pool instead.Look at the release tags for information about older releases.