v1.1.0

This release introduces two new discoverers:

• Cache discoverer to store the first discovered result.
• Storage discoverer allows get configuration from go-storage.

Added

• Storage discoverer allows to fetch instance configuration from a cluster
  configuration in storage using go-storage (#56).
• Cache discoverer type that stores the first discovered result (#58).

Fixed

• checkTimeout race condition between deadline check and context
  cancellation that could cause Etcd Discovery to block indefinitely (#57).

v1.0.0

The first public release includes etcd and TcS support. Main features:

• Fetch Tarantool instances configurations from etcd and Tarantool Config Storage.
• Create an update instance configuration events stream due to changes in a cluster configuration storage.
• Filter configurations with a custom set of filters.
• Create a pool of connections depending on actual cluster configuration in a cluster configuration storage.
• All requests from the Go connector tarantool/go-tarantool are supported (include tarantool/go-tarantool/crud requests).

Added

• Instance type describes an instance configuration.
• Mode enumeration allows to choose an instance mode to execute a request.
• filter subpackage with a set filters to fetch only required instances.
• discoverer subpackage with a set of discoverers to fetch instances configuration.
  • Etcd discoverer allows to fetch instance configuration from a cluster configuration in etcd.
  • Filter discoverer allows to filter a list of instances configurations.
  • Connectable discoverer returns a list of nodes from the inner discoverer that are available for connection.
  • Tarantool discoverer allows to fetch instence configuration from a Tarantool Config Storage.
• scheduler subpackage with a set of schedulers.
  • Periodic scheduler allows to schedule events due to a timeout.
  • EtcdWatch scheduler allows to schedule events due to updates in etcd.
• subscriber subpackage with a set of types to subscribe to new update instances configurations events.
  • Connectable filters the stream of events from the inner Subscriber and isolates from it only nodes available for connection.
  • Schedule subscriber combine scheduler and discoverer to generate update the events stream.
  • Filter subscriber allows to filter an update events stream due to instance configuration.
• observer subpackage with a set of observers to observe any update events.
  • Accumulator observer accumulates events and sends them by batches. While one batch is being sent, the other is accumulating.
• pool subpackage with a set of types to create a connection pool.
  • NetDialerFactory creates a connection settings to connect to an instance without TLS from the instance configuration.
  • RoundRobinBalancer helps to send requests from a pool to instances in round-robin.
  • PriorityBalancer helps to send requests from a pool to instances with a higher priority.
  • Pool of connections could be subscribed to a subscriber. It observes an update events stream and establishes connections or removes a connection from pool due to changes.
  • DoerAdapter adapts Pool to tarantool.Doer to send requests into the pool with specified mode.