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Fix light client startup (#1130)

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* fix light client startup

* fix grumbles
This commit is contained in:
Svyatoslav Nikolsky
2018-11-19 08:58:21 +03:00
committed by GitHub
parent d149f3358a
commit 62c590ef25
3 changed files with 34 additions and 17 deletions
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substrate/core/client/src/client.rs
+11 -12
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@@ -70,7 +70,6 @@ pub struct Client<B, E, Block, RA> where Block: BlockT {
importing_block: RwLock<Option<Block::Hash>>, // holds the block hash currently being imported. TODO: replace this with block queue
block_execution_strategy: ExecutionStrategy,
api_execution_strategy: ExecutionStrategy,
changes_trie_config: Option<ChangesTrieConfiguration>,
_phantom: PhantomData<RA>,
}
@@ -245,12 +244,6 @@ impl<B, E, Block, RA> Client<B, E, Block, RA> where
backend.commit_operation(op)?;
}
// changes trie configuration should never change => we can read it in advance
let changes_trie_config = backend.state_at(BlockId::Number(backend.blockchain().info()?.best_number))?
.storage(well_known_keys::CHANGES_TRIE_CONFIG)
.map_err(|e| error::Error::from_state(Box::new(e)))?
.and_then(|c| Decode::decode(&mut &*c));
Ok(Client {
backend,
executor,
@@ -261,7 +254,6 @@ impl<B, E, Block, RA> Client<B, E, Block, RA> where
importing_block: Default::default(),
block_execution_strategy,
api_execution_strategy,
changes_trie_config,
_phantom: Default::default(),
})
}
@@ -381,7 +373,7 @@ impl<B, E, Block, RA> Client<B, E, Block, RA> where
last: Block::Hash,
key: &[u8]
) -> error::Result<Vec<(NumberFor<Block>, u32)>> {
let config = self.changes_trie_config.as_ref();
let config = self.changes_trie_config()?;
let storage = self.backend.changes_trie_storage();
let (config, storage) = match (config, storage) {
(Some(config), Some(storage)) => (config, storage),
@@ -389,7 +381,7 @@ impl<B, E, Block, RA> Client<B, E, Block, RA> where
};
key_changes::<_, Blake2Hasher>(
config,
&config,
storage,
self.require_block_number_from_id(&BlockId::Hash(first))?.as_(),
&ChangesTrieAnchorBlockId {
@@ -463,7 +455,7 @@ impl<B, E, Block, RA> Client<B, E, Block, RA> where
}
}
let config = self.changes_trie_config.as_ref();
let config = self.changes_trie_config()?;
let storage = self.backend.changes_trie_storage();
let (config, storage) = match (config, storage) {
(Some(config), Some(storage)) => (config, storage),
@@ -484,7 +476,7 @@ impl<B, E, Block, RA> Client<B, E, Block, RA> where
// fetch key changes proof
let key_changes_proof = key_changes_proof::<_, Blake2Hasher>(
config,
&config,
&recording_storage,
self.require_block_number_from_id(&BlockId::Hash(first))?.as_(),
&ChangesTrieAnchorBlockId {
@@ -975,6 +967,13 @@ impl<B, E, Block, RA> Client<B, E, Block, RA> where
unreachable!("this is a bug. `target_hash` is in blockchain but wasn't found following all leaves backwards");
}
fn changes_trie_config(&self) -> Result<Option<ChangesTrieConfiguration>, Error> {
Ok(self.backend.state_at(BlockId::Number(self.backend.blockchain().info()?.best_number))?
.storage(well_known_keys::CHANGES_TRIE_CONFIG)
.map_err(|e| error::Error::from_state(Box::new(e)))?
.and_then(|c| Decode::decode(&mut &*c)))
}
}
impl<B, E, Block, RA> ChainHeaderBackend<Block> for Client<B, E, Block, RA> where