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Make authority discovery configurable (#7465)

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* Make authority discovery configurable

This pr makes the authority discovery configurable. So, instead of
having default values for the query interval, publish interval etc this
pr adds a configuration to make these values changeable. This will be
useful for tests where authority discovery is required.

* Update client/authority-discovery/src/worker.rs

Co-authored-by: Max Inden <mail@max-inden.de>

* Update client/authority-discovery/src/lib.rs

Co-authored-by: Max Inden <mail@max-inden.de>

* Update client/authority-discovery/src/lib.rs

Co-authored-by: Max Inden <mail@max-inden.de>

* Update client/authority-discovery/src/lib.rs

Co-authored-by: Max Inden <mail@max-inden.de>

* Fix compilation

* line width

Co-authored-by: Max Inden <mail@max-inden.de>
This commit is contained in:
Bastian Köcher
2020-10-30 14:59:45 +01:00
committed by GitHub
parent 1f45b4450e
commit 86d5d9609d
3 changed files with 101 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files
substrate/client/authority-discovery/src/worker.rs
+11 -11
View File
@@ -58,9 +58,6 @@ type Interval = Box<dyn Stream<Item = ()> + Unpin + Send + Sync>;
const LOG_TARGET: &'static str = "sub-authority-discovery";
/// Upper bound estimation on how long one should wait before accessing the Kademlia DHT.
const LIBP2P_KADEMLIA_BOOTSTRAP_TIME: Duration = Duration::from_secs(30);
/// Name of the Substrate peerset priority group for authorities discovered through the authority
/// discovery module.
const AUTHORITIES_PRIORITY_GROUP_NAME: &'static str = "authorities";
@@ -154,30 +151,33 @@ where
dht_event_rx: DhtEventStream,
role: Role,
prometheus_registry: Option<prometheus_endpoint::Registry>,
config: crate::WorkerConfig,
) -> Self {
// Kademlia's default time-to-live for Dht records is 36h, republishing records every 24h.
// Kademlia's default time-to-live for Dht records is 36h, republishing
// records every 24h through libp2p-kad.
// Given that a node could restart at any point in time, one can not depend on the
// republishing process, thus publishing own external addresses should happen on an interval
// < 36h.
let publish_interval = interval_at(
Instant::now() + LIBP2P_KADEMLIA_BOOTSTRAP_TIME,
Duration::from_secs(12 * 60 * 60),
Instant::now() + config.query_start_delay,
config.publish_interval,
);
// External addresses of remote authorities can change at any given point in time. The
// interval on which to trigger new queries for the current authorities is a trade off
// between efficiency and performance.
let query_interval_start = Instant::now() + LIBP2P_KADEMLIA_BOOTSTRAP_TIME;
let query_interval_duration = Duration::from_secs(10 * 60);
let query_interval_start = Instant::now() + config.query_start_delay;
let query_interval_duration = config.query_interval;
let query_interval = interval_at(query_interval_start, query_interval_duration);
// Querying 500 [`AuthorityId`]s takes ~1m on the Kusama DHT (10th of August 2020) when
// comparing `authority_discovery_authority_addresses_requested_total` and
// `authority_discovery_dht_event_received`. With that in mind set the peerset priority
// group on the same interval as the [`query_interval`] above, just delayed by 5 minutes.
// group on the same interval as the [`query_interval`] above,
// just delayed by 5 minutes by default.
let priority_group_set_interval = interval_at(
query_interval_start + Duration::from_secs(5 * 60),
query_interval_duration,
query_interval_start + config.priority_group_set_offset,
config.priority_group_set_interval,
);
let addr_cache = AddrCache::new();