Module pending

Help the guard manager (and other crates) deal with “pending information”.

There are two kinds of pending information to deal with. First, every guard that we hand out needs to be marked as succeeded or failed. Second, if a guard is given out on an exploratory basis, then the circuit manager can’t know whether to use a circuit built through that guard until the guard manager tells it. This is handled via GuardUsable.

Structs

GuardMonitor

An object used to tell the GuardMgr about the result of trying to build a circuit through a guard.

GuardUsable

A future used to see if we have “permission” to use a guard.

PendingRequest 🔒

Pending information about a guard that we handed out in response to some request, but where we have not yet reported whether the guard is usable.

RequestId 🔒

Internal unique identifier used to tell PendingRequest objects apart.

Enums

GuardStatus

A message that we can get back from the circuit manager who asked for a guard.