* client/authority-discovery: Throttle DHT requests
Instead of passing one DHT query for each authority down to the network
every query interval, only pass MAX_IN_FLIGHT_LOOKUPS at a given point
in time, triggering new ones when previous ones return.
* client/authority-discovery/worker/test: Fix wrong constant
* frame/authority-discovery: Have authorities() return both current and next
Authority address lookups on the DHT happen periodically (every 10
mintues) and are rather slow (~10 seconds).
In order to smooth the transition period between two sessions, have the
runtime module return both the current as well as the next authority
set. Thereby the client authority module will:
1. Publish its addresses one session in advance.
2. Prefetch the addresses of authorities of the next session in advance.
* frame/authority-discovery: Deduplicate authority ids
* frame/authority-discovery: Don't dedup on_genesis authorities
* frame/authority-discovery: Remove mut and sort on comparison in tests
* frame/authority-discovery: Use BTreeSet for deduplication
* client/authority-discovery/worker: Extract address getter
* client/authority-discovery: Test for no duplicate p2p components
* client/authority-discovery: Append PeerId to Multiaddr at most once
When collecting the addresses to be published for the local node,
`addresses_to_publish` adds the local nodes `PeerId` to each
`Multiaddr`. Before doing so, ensure the `Multiaddr` does not already
contain one.
* client/authority-discovery: Remove explicit return
* client/authority-discovery: Rename AuthorityDiscovery to XXXWorker
* client/authority-discovery: Introduce AuthorityDiscoveryService
Add a basic `AuthorityDiscoveryService` implementation which enables
callers to get the addresses for a given `AuthorityId` from the local
cache.
* client/authority-discovery: Split into worker and service mod
Move `Service` and `Worker` to their own Rust modules resulting in the
following file structure.
├── build.rs
├── Cargo.toml
└── src
├── error.rs
├── lib.rs
├── service.rs
├── tests.rs
├── worker
│ ├── addr_cache.rs
│ ├── schema
│ │ └── dht.proto
│ └── tests.rs
└── worker.rs
* client/authority-discovery: Cache PeerId -> AuthorityId mapping
* client/authority-discovery: Update priority group on interval
Instead of updating the authority discovery peerset priority group each
time a new DHT value is found, update it regularly on an interval.
This removes the need for deterministic random selection. Instead of
trying to return a random stable set of `Multiaddr`s, the `AddrCache`
now returns a random set on each call.
* client/authority-discovery: Implement Service::get_authority_id
* client/authority-discovery: Use HashMap instead of BTreeMap
* client/authority-discovery: Rework priority group interval
* client/authority-discovery: Fix comment
* bin/node/cli: Update authority discovery constructor
* client/authority-discovery: Fuse from_service receiver
* client/authority-discovery: Remove Rng import
* client/authority-discovery: Ignore Multiaddr without PeerId
* client/authority-discovery/service: Add note on returned None
* client/authority-discovery/addr_cache: Replace double clone with deref
Max Inden