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Grandpa warp sync request-response protocol (#7711)

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* Made a start

* So the proof between authority set is phragmen one, this is crazy big,
or is there some signing of the result : that is the storage key, damn?

* ok getting from header digest seems doable.

* for testing

* get set id from storage directly (should use runtime to handler change).

* move test to init

* correct auth key

* fix iteration

* Correct proof content

* actually update block number.

* actually check last justif against its header

* justification relation to new authorities through header hash check is
needed here. This assumes the hash from header is calculated.

* Few changes

* Connected up cheme's branch

* Clean up

* Move things around a bit so that adding the grandpa warp sync request response protocol happens in the node code

* Nits

* Changes to comments

* Cheme changes

* Remove todos and test compile.

* Rename _authority_ related proof function to _warp_sync_ .

* Update client/grandpa-warp-sync/src/lib.rs

quick fix

* Put the warp sync request response protocol behind a feature flag because we dont' need it on a light client.

* Update client/grandpa-warp-sync/src/lib.rs

Quick fix

* Update Cargo.lock

* Adding test, comment on limitation related to 'delay', this could
be implemented but with a cost.

* Set between a delay override last fragment.

* Check for pending authority set change at start.

* adjust index

* custom cache is not a good idea.

* Use a simple cache instead.

* restore broken indentation

* Address crate rename

* Merge conflict badly resolved, sorry

Co-authored-by: cheme <emericchevalier.pro@gmail.com>
Co-authored-by: Pierre Krieger <pierre.krieger1708@gmail.com>
This commit is contained in:
Ashley
2021-01-21 18:14:07 +01:00
committed by GitHub
parent cd0ad4805d
commit 87cc216774
12 changed files with 770 additions and 33 deletions
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substrate/client/finality-grandpa-warp-sync/Cargo.toml
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[package]
description = "A request-response protocol for handling grandpa warp sync requests"
name = "sc-finality-grandpa-warp-sync"
version = "0.8.0"
license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
authors = ["Parity Technologies <admin@parity.io>"]
edition = "2018"
publish = false
homepage = "https://substrate.dev"
repository = "https://github.com/paritytech/substrate/"
[package.metadata.docs.rs]
targets = ["x86_64-unknown-linux-gnu"]
[dependencies]
sc-network = { version = "0.8.0", path = "../network" }
sc-finality-grandpa = { version = "0.8.0", path = "../finality-grandpa" }
sp-runtime = { version = "2.0.0", path = "../../primitives/runtime" }
sp-blockchain = { version = "2.0.0", path = "../../primitives/blockchain" }
sc-client-api = { version = "2.0.0", path = "../api" }
sc-service = { version = "0.8.0", path = "../service" }
futures = "0.3.8"
log = "0.4.11"
derive_more = "0.99.11"
codec = { package = "parity-scale-codec", version = "1.3.5" }
prost = "0.6.1"
num-traits = "0.2.14"
parking_lot = "0.11.1"