A Source is the read side of a pipe. You provide a handler for when an item
is ready and the Source will call it. Note that if the underlying pipe has
multiple items ready, onReady will only be called once. This is so that the
consumer of the sink can implicitly apply backpressure by only pulling when
it is able to
A Source is the read side of a pipe. You provide a handler for when an item is ready and the Source will call it. Note that if the underlying pipe has multiple items ready, onReady will only be called once. This is so that the consumer of the sink can implicitly apply backpressure by only pulling when it is able to