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implement mark_best using set_head

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This commit is contained in:
Robert Habermeier
2019-02-18 17:24:55 -03:00
parent b47cae17f0
commit 2ed6549530
3 changed files with 590 additions and 430 deletions
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consensus/src/lib.rs
+14 -10
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@@ -94,9 +94,8 @@ pub fn follow_polkadot<'a, L: 'a, P: 'a>(para_id: ParaId, local: Arc<L>, polkado
head_updates
.map_err(Error::Polkadot)
.and_then(|update| {
Option<<L::Block as BlockT>::Header>::decode(&mut &update.head_data[..])
.ok_or_else(|| Error::InvalidHeadData)
.and_then(|update| -> Result<Option<<L::Block as BlockT>::Header>, _> {
Decode::decode(&mut &update.head_data[..]).ok_or_else(|| Error::InvalidHeadData)
})
.filter_map(|h| h)
.for_each(move |p_head| {
@@ -110,9 +109,8 @@ pub fn follow_polkadot<'a, L: 'a, P: 'a>(para_id: ParaId, local: Arc<L>, polkado
finalized_heads
.map_err(Error::Polkadot)
.and_then(|head_data| {
Option<<L::Block as BlockT>::Header>::decode(&mut &head_data[..])
.ok_or_else(|| Error::InvalidHeadData)
.and_then(|head_data| -> Result<Option<<L::Block as BlockT>::Header>, _> {
Decode::decode(&mut &head_data[..]).ok_or_else(|| Error::InvalidHeadData)
})
.filter_map(|h| h)
.for_each(move |p_head| {
@@ -133,8 +131,14 @@ impl<B, E, Block, RA> LocalClient for Client<B, E, Block, RA> where
{
type Block = Block;
fn mark_best(&self, _hash: <Self::Block as BlockT>::Hash) -> ClientResult<bool> {
Ok(true) // TODO: https://github.com/paritytech/substrate/pull/1489
fn mark_best(&self, hash: <Self::Block as BlockT>::Hash) -> ClientResult<bool> {
match self.set_head(BlockId::hash(hash)) {
Ok(()) => Ok(true),
Err(e) => match e.kind() {
ClientErrorKind::UnknownBlock(_) => Ok(false),
_ => Err(e),
}
}
}
fn finalize(&self, hash: <Self::Block as BlockT>::Hash) -> ClientResult<bool> {
@@ -149,11 +153,11 @@ impl<B, E, Block, RA> LocalClient for Client<B, E, Block, RA> where
}
fn parachain_key(para_id: ParaId) -> substrate_primitives::storage::StorageKey {
const PREFIX: &[u8] = &b"Parachains Heads";
const PREFIX: &[u8] = &*b"Parachains Heads";
para_id.using_encoded(|s| {
let mut v = PREFIX.to_vec();
v.extend(s);
substrate_primitives::storage;:StorageKey(v)
substrate_primitives::storage::StorageKey(v)
})
}