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grandpa: Use storage proofs for Grandpa authorities (#3734)

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* grandpa: Write Grandpa authorities to well known key.

Instead of requiring execution proofs for Grandpa authorities, this
enables much simpler storage proofs.

* grandpa: Introduce named AuthorityList type.

* grandpa: Storage migration for srml-grandpa module.

* Remove no-longer-used GrandpaApi runtime API.

* grandpa: Write AuthorityList to storage with encoding version.

We expect the AuthorityList type may change (eg. key changes). To make
upgrades smoother, include a version in the stored value.

* Bump node runtime spec version.

* Update srml/grandpa/src/lib.rs

Co-Authored-By: André Silva <andre.beat@gmail.com>
This commit is contained in:
Jim Posen
2019-10-31 14:33:34 +01:00
committed by GitHub
parent 3cbc28ab59
commit c0a1926704
18 changed files with 263 additions and 195 deletions
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substrate/node-template/src/service.rs
+3 -3
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@@ -48,7 +48,7 @@ macro_rules! new_full_start {
.ok_or_else(|| substrate_service::Error::SelectChainRequired)?;
let (grandpa_block_import, grandpa_link) =
grandpa::block_import::<_, _, _, runtime::RuntimeApi, _, _>(
grandpa::block_import::<_, _, _, runtime::RuntimeApi, _>(
client.clone(), &*client, select_chain
)?;
@@ -197,8 +197,8 @@ pub fn new_light<C: Send + Default + 'static>(config: Configuration<C, GenesisCo
let fetch_checker = fetcher
.map(|fetcher| fetcher.checker().clone())
.ok_or_else(|| "Trying to start light import queue without active fetch checker")?;
let grandpa_block_import = grandpa::light_block_import::<_, _, _, RuntimeApi, _>(
client.clone(), backend, Arc::new(fetch_checker), client.clone()
let grandpa_block_import = grandpa::light_block_import::<_, _, _, RuntimeApi>(
client.clone(), backend, &*client.clone(), Arc::new(fetch_checker),
)?;
let finality_proof_import = grandpa_block_import.clone();
let finality_proof_request_builder =