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NetworkBridge: validator (authorities) discovery api (#1699)

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* stupid, but it compiles

* redo

* cleanup

* add ValidatorDiscovery to msgs

* sketch network bridge code

* ConnectToAuthorities instead of validators

* more stuff

* cleanup

* more stuff

* complete ConnectToAuthoritiesState

* Update node/network/bridge/src/lib.rs

Co-authored-by: Peter Goodspeed-Niklaus <coriolinus@users.noreply.github.com>

* Collator protocol subsystem (#1659)

* WIP

* The initial implementation of the collator side.

* Improve comments

* Multiple collation requests

* Add more tests and comments to validator side

* Add comments, remove dead code

* Apply suggestions from code review

Co-authored-by: Peter Goodspeed-Niklaus <coriolinus@users.noreply.github.com>

* Fix build after suggested changes

* Also connect to the next validator group

* Remove a Future impl and move TimeoutExt to util

* Minor nits

* Fix build

* Change FetchCollations back to FetchCollation

* Try this

* Final fixes

* Fix build

Co-authored-by: Peter Goodspeed-Niklaus <coriolinus@users.noreply.github.com>

* handle multiple in-flight connection requests

* handle cancelled requests

* Update node/core/runtime-api/src/lib.rs

Co-authored-by: Bernhard Schuster <bernhard@ahoi.io>

* redo it again

* more stuff

* redo it again

* update comments

* workaround Future is not Send

* fix trailing spaces

* clarify comments

* bridge: fix compilation in tests

* update more comments

* small fixes

* port collator protocol to new validator discovery api

* collator tests compile

* collator tests pass

* do not revoke a request when the stream receiver is closed

* make revoking opt-in

* fix is_fulfilled

* handle request revokation in collator

* tests

* wait for validator connections asyncronously

* fix compilation

* relabel my todos

* apply Fedor's patch

* resolve reconnection TODO

* resolve revoking TODO

* resolve channel capacity TODO

* resolve peer cloning TODO

* resolve peer disconnected TODO

* resolve PeerSet TODO

* wip tests

* more tests

* resolve Arc TODO

* rename pending to non_revoked

* one more test

* extract utility function into util crate

* fix compilation in tests

* Apply suggestions from code review

Co-authored-by: Fedor Sakharov <fedor.sakharov@gmail.com>

* revert pin_project removal

* fix while let loop

* Revert "revert pin_project removal"

This reverts commit ae7f529d8de982ef66c3007dd1ff74c6ddce80d2.

* fix compilation

* Update node/subsystem/src/messages.rs

* docs on pub items

* guide updates

* remove a TODO

* small guide update

* fix a typo

* link to the issue

* validator discovery: on_request docs

Co-authored-by: Peter Goodspeed-Niklaus <coriolinus@users.noreply.github.com>
Co-authored-by: Fedor Sakharov <fedor.sakharov@gmail.com>
Co-authored-by: Bernhard Schuster <bernhard@ahoi.io>
This commit is contained in:
Andronik Ordian
2020-10-06 13:34:57 +02:00
committed by GitHub
parent 96f6b5ae2d
commit ca89e3edbe
20 changed files with 1102 additions and 124 deletions
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polkadot/runtime/parachains/src/runtime_api_impl/v1.rs
+25 -1
View File
@@ -22,7 +22,7 @@ use primitives::v1::{
ValidatorId, ValidatorIndex, GroupRotationInfo, CoreState, ValidationData,
Id as ParaId, OccupiedCoreAssumption, SessionIndex, ValidationCode,
CommittedCandidateReceipt, ScheduledCore, OccupiedCore, CoreOccupied, CoreIndex,
GroupIndex, CandidateEvent, PersistedValidationData,
GroupIndex, CandidateEvent, PersistedValidationData, AuthorityDiscoveryId,
};
use sp_runtime::traits::Zero;
use frame_support::debug;
@@ -266,3 +266,27 @@ where
})
.collect()
}
/// Get the `AuthorityDiscoveryId`s corresponding to the given `ValidatorId`s.
/// Currently this request is limited to validators in the current session.
///
/// We assume that every validator runs authority discovery,
/// which would allow us to establish point-to-point connection to given validators.
// FIXME: handle previous sessions:
// https://github.com/paritytech/polkadot/issues/1461
pub fn validator_discovery<T>(validators: Vec<ValidatorId>) -> Vec<Option<AuthorityDiscoveryId>>
where
T: initializer::Trait + pallet_authority_discovery::Trait,
{
// FIXME: the mapping might be invalid if a session change happens in between the calls
// use SessionInfo from https://github.com/paritytech/polkadot/pull/1691
let current_validators = <inclusion::Module<T>>::validators();
let authorities = <pallet_authority_discovery::Module<T>>::authorities();
// We assume the same ordering in authorities as in validators so we can do an index search
validators.iter().map(|id| {
// FIXME: linear search is slow O(n^2)
// use SessionInfo from https://github.com/paritytech/polkadot/pull/1691
let validator_index = current_validators.iter().position(|v| v == id);
validator_index.and_then(|i| authorities.get(i).cloned())
}).collect()
}