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pallet-grandpa: Remove GRANDPA_AUTHORITIES_KEY (#2181)

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Remove the `GRANDPA_AUTHORITIES_KEY` key and its usage. Apparently this
was used in the early days to communicate the grandpa authorities to the
node. However, we have now a runtime api that does this for us. So, this
pull request is moving from the custom managed storage item to a FRAME
managed storage item.

This pr also includes a migration for doing the switch on a running
chain.

---------

Co-authored-by: Davide Galassi <davxy@datawok.net>
This commit is contained in:
Bastian Köcher
2023-11-13 14:32:02 +01:00
committed by GitHub
parent 604704a84c
commit ebcf0a0f1c
7 changed files with 124 additions and 83 deletions
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substrate/frame/grandpa/src/migrations.rs
+3
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@@ -22,8 +22,11 @@ use frame_support::{
use crate::{Config, CurrentSetId, SetIdSession, LOG_TARGET};
pub use v5::MigrateV4ToV5;
/// Version 4.
pub mod v4;
mod v5;
/// This migration will clean up all stale set id -> session entries from the
/// `SetIdSession` storage map, only the latest `max_set_id_session_entries`