lumberjack

type ConnectionMode interface {
	// Close will stop the modes it's publisher loop and close all it's
	// associated clients
	Close() error

	// PublishEvents will send all events (potentially asynchronous) to its
	// clients.
	PublishEvents(trans outputs.Signaler, events []common.MapStr) error
}

type ProtocolClient interface {
	// Connect establishes a connection to the clients sink.
	// The connection attempt shall report an error if no connection could been
	// established within the given time interval. A timeout value of 0 == wait
	// forever.
	Connect(timeout time.Duration) error

	// Close closes the established connection.
	Close() error

	// IsConnected indicates the clients connection state. If connection has
	// been lost while publishing events, IsConnected must return false. As long as
	// IsConnected returns false, an output plugin might try to re-establish the
	// connection by calling Connect.
	IsConnected() bool

	// PublishEvents sends events to the clients sink. On failure or timeout err
	// must be set. If connection has been lost, IsConnected must return false
	// in future calls.
	// PublishEvents is free to publish only a subset of given events, even in
	// error case. On return n indicates the number of events guaranteed to be
	// published.
	PublishEvents(events []common.MapStr) (n int, err error)
}

type TransportClient interface {
	net.Conn
	Connect(timeout time.Duration) error
	IsConnected() bool
}