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Implement PoV Distribution Subsystem (#1344)

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* introduce candidatedescriptor type

* add PoVDistribution message type

* loosen bound on PoV Distribution to account for equivocations

* re-export some types from the messages module

* begin PoV Distribution subsystem

* remove redundant index from PoV distribution

* define state machine for pov distribution

* handle overseer signals

* set up control flow

* remove `ValidatorStatement` section

* implement PoV fetching

* implement distribution logic

* add missing `

* implement some network bridge event handlers

* stub for message processing, handle our view change

* control flow for handling messages

* handle `awaiting` message

* handle any incoming PoVs and redistribute

* actually provide a subsystem implementation

* remove set-builder notation

* begin testing PoV distribution

* test that we send awaiting messages only to peers with same view

* ensure we distribute awaited PoVs to peers on view changes

* test that peers can complete fetch and are rewarded

* test some reporting logic

* ensure peer is reported for flooding

* test punishing peers diverging from awaited protocol

* test that we eagerly complete peers' awaited PoVs based on what we receive

* test that we prune the awaited set after receiving

* expand pov-distribution in guide to match a change I made

* remove unneeded import
This commit is contained in:
Robert Habermeier
2020-07-08 18:15:39 -04:00
committed by GitHub
parent f83ba174f1
commit 151d73af5b
9 changed files with 1565 additions and 16 deletions
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polkadot/node/network/pov-distribution/Cargo.toml
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[package]
name = "polkadot-pov-distribution"
version = "0.1.0"
authors = ["Parity Technologies <admin@parity.io>"]
edition = "2018"
[dependencies]
futures = "0.3.5"
log = "0.4.8"
futures-timer = "3.0.2"
streamunordered = "0.5.1"
polkadot-primitives = { path = "../../../primitives" }
node-primitives = { package = "polkadot-node-primitives", path = "../../primitives" }
parity-scale-codec = "1.3.0"
sc-network = { git = "https://github.com/paritytech/substrate", branch = "master" }
sp-runtime = { git = "https://github.com/paritytech/substrate", branch = "master" }
polkadot-subsystem = { package = "polkadot-node-subsystem", path = "../../subsystem" }
[dev-dependencies]
parking_lot = "0.10.0"
subsystem-test = { package = "polkadot-subsystem-test-helpers", path = "../../test-helpers/subsystem" }
assert_matches = "1.3.0"