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Revert approval voting (#5438)

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* Revert approval-voting subsystem

* Approval voting revert encapsulated within 'ops' module

* use 'get_stored_blocks' to get lower block height

* Fix error message

* Optionally shrink/delete stored blocks range

* range end number is last block number plus 1

* Apply code review suggestions

* Use tristate enum for block range in backend overlay

* Add clarification comment

* Add comments to private struct
This commit is contained in:
Davide Galassi
2022-05-11 10:28:16 +02:00
committed by GitHub
parent 9f21ec97b8
commit 8837dc7e6f
7 changed files with 222 additions and 64 deletions
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polkadot/node/core/chain-selection/src/lib.rs
+4 -4
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@@ -317,10 +317,10 @@ impl ChainSelectionSubsystem {
}
/// Revert to the block corresponding to the specified `hash`.
/// The revert is not allowed for blocks older than the last finalized one.
pub fn revert(&self, hash: Hash) -> Result<(), Error> {
let backend_config = db_backend::v1::Config { col_data: self.config.col_data };
let mut backend = db_backend::v1::DbBackend::new(self.db.clone(), backend_config);
/// The operation is not allowed for blocks older than the last finalized one.
pub fn revert_to(&self, hash: Hash) -> Result<(), Error> {
let config = db_backend::v1::Config { col_data: self.config.col_data };
let mut backend = db_backend::v1::DbBackend::new(self.db.clone(), config);
let ops = tree::revert_to(&backend, hash)?.into_write_ops();