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Make genesis state locally-available on light client (#1622)

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* make genesis state available on light client

* RemoteOrLocalCallExecutor

* code_is_executed_locally_or_remotely

* OnDemandOrGenesisState tests

* some comments
This commit is contained in:
Svyatoslav Nikolsky
2019-02-01 12:27:54 +03:00
committed by Gav Wood
parent 5d82cf243e
commit 381cf26f55
8 changed files with 510 additions and 79 deletions
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substrate/core/client/src/in_mem.rs
+27 -7
View File
@@ -465,17 +465,11 @@ where
}
fn reset_storage(&mut self, mut top: StorageMap, children: ChildrenStorageMap) -> error::Result<H::Out> {
if top.iter().any(|(k, _)| well_known_keys::is_child_storage_key(k)) {
return Err(error::ErrorKind::GenesisInvalid.into());
}
check_genesis_storage(&top, &children)?;
let mut transaction: Vec<(Option<Vec<u8>>, Vec<u8>, Option<Vec<u8>>)> = Default::default();
for (child_key, child_map) in children {
if !well_known_keys::is_child_storage_key(&child_key) {
return Err(error::ErrorKind::GenesisInvalid.into());
}
let (root, is_default, update) = self.old_state.child_storage_root(&child_key, child_map.into_iter().map(|(k, v)| (k, Some(v))));
transaction.consolidate(update);
@@ -662,6 +656,19 @@ where
H::Out: HeapSizeOf + Ord,
{}
impl<Block, H> backend::RemoteBackend<Block, H> for Backend<Block, H>
where
Block: BlockT,
H: Hasher<Out=Block::Hash>,
H::Out: HeapSizeOf + Ord,
{
fn is_local_state_available(&self, block: &BlockId<Block>) -> bool {
self.blockchain.expect_block_number_from_id(block)
.map(|num| num.is_zero())
.unwrap_or(false)
}
}
impl<Block: BlockT> Cache<Block> {
fn insert(&self, at: Block::Hash, authorities: Option<Vec<AuthorityIdFor<Block>>>) {
self.authorities_at.write().insert(at, authorities);
@@ -708,6 +715,19 @@ pub fn cache_authorities_at<Block: BlockT>(
blockchain.cache.insert(at, authorities);
}
/// Check that genesis storage is valid.
pub fn check_genesis_storage(top: &StorageMap, children: &ChildrenStorageMap) -> error::Result<()> {
if top.iter().any(|(k, _)| well_known_keys::is_child_storage_key(k)) {
return Err(error::ErrorKind::GenesisInvalid.into());
}
if children.keys().any(|child_key| !well_known_keys::is_child_storage_key(&child_key)) {
return Err(error::ErrorKind::GenesisInvalid.into());
}
Ok(())
}
#[cfg(test)]
mod tests {
use std::sync::Arc;