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validator-discovery: basic retrying logic (#3059)

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* validator_discovery: less flexible, but simpler design

* fix test

* remove unused struct

* smol optimization

* validator_discovery: basic retrying logic

* add a test

* add more tests

* update the guide

* more test logic

* Require at least 2/3 connectivity.

* Fix test.

* Update node/network/gossip-support/src/lib.rs

Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>

* Update node/network/gossip-support/src/lib.rs

Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>

Co-authored-by: Robert Klotzner <robert.klotzner@gmx.at>
Co-authored-by: Robert Klotzner <eskimor@users.noreply.github.com>
Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>
This commit is contained in:
Andronik Ordian
2021-05-20 12:05:44 +02:00
committed by GitHub
parent 933c9ac2bf
commit 2e70f4ea08
9 changed files with 432 additions and 27 deletions
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polkadot/roadmap/implementers-guide/src/types/overseer-protocol.md
+23 -18
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@@ -156,18 +156,18 @@ enum AvailabilityDistributionMessage {
///
/// NOTE: The result of this fetch is not yet locally validated and could be bogus.
FetchPoV {
/// The relay parent giving the necessary context.
relay_parent: Hash,
/// Validator to fetch the PoV from.
from_validator: ValidatorIndex,
/// Candidate hash to fetch the PoV for.
candidate_hash: CandidateHash,
/// Expected hash of the PoV, a PoV not matching this hash will be rejected.
pov_hash: Hash,
/// Sender for getting back the result of this fetch.
///
/// The sender will be canceled if the fetching failed for some reason.
tx: oneshot::Sender<PoV>,
/// The relay parent giving the necessary context.
relay_parent: Hash,
/// Validator to fetch the PoV from.
from_validator: ValidatorIndex,
/// Candidate hash to fetch the PoV for.
candidate_hash: CandidateHash,
/// Expected hash of the PoV, a PoV not matching this hash will be rejected.
pov_hash: Hash,
/// Sender for getting back the result of this fetch.
///
/// The sender will be canceled if the fetching failed for some reason.
tx: oneshot::Sender<PoV>,
},
}
```
@@ -446,17 +446,22 @@ enum NetworkBridgeMessage {
/// Connect to peers who represent the given `validator_ids`.
///
/// Also ask the network to stay connected to these peers at least
/// until the request is revoked.
/// This can be done by dropping the receiver.
/// until a new request is issued.
///
/// Because it overrides the previous request, it must be ensured
/// that `validator_ids` include all peers the subsystems
/// are interested in (per `PeerSet`).
///
/// A caller can learn about validator connections by listening to the
/// `PeerConnected` events from the network bridge.
ConnectToValidators {
/// Ids of the validators to connect to.
validator_ids: Vec<AuthorityDiscoveryId>,
/// The underlying protocol to use for this request.
peer_set: PeerSet,
/// Response sender by which the issuer can learn the `PeerId`s of
/// the validators as they are connected.
/// The response is sent immediately for already connected peers.
connected: ResponseStream<(AuthorityDiscoveryId, PeerId)>,
/// Sends back the number of `AuthorityDiscoveryId`s which
/// authority discovery has failed to resolve.
failed: oneshot::Sender<usize>,
},
}
```