Some design decisions made

Components

The following components exist:

• AddressManager
• PeerManager
• PingManager
• Peer

Every component is structured as follows:

Public

• There is a Config struct that contains all configuration options for the manager.
• There is a "handle" struct that has the components name.
• Generally handles will be Arc'ed by the caller right after constructing. (The P2P utility f.e. only exposes Arc'ed handles.)
• Methods intended for internal use are exposed through a XxxManagerControl trait.

Internal

• There is a Processor struct that will live inside the runtime, so that there is direct access to the internal fields without locks.
• Communication from the handle to the processor happens over channels.
• Sometimes we want to expose some data through the handle, this data will unfortunately have to be stored in a shared State behind a lock.
• Components can expose events through a Dispatch object stored in the processor, users can listen by calling the add_listener methods on the handles.
• There is a private SendCtrl trait that is used to actually send Ctrl messages. Usually it is implemented by the Manager itself and by the pair of (chan::Sender<Ctrl>, erin::Waker). So that event listeners can be registered from within the processor without needing the manager's handle.