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Implement block imports for sync

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This commit is contained in:
Paul Hauner
2019-03-23 18:48:09 +11:00
parent 4b5b5851a6
commit a57a7c2394
6 changed files with 239 additions and 22 deletions
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24
beacon_node/beacon_chain/src/beacon_chain.rs
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@@ -46,6 +46,26 @@ pub enum BlockProcessingOutcome {
InvalidBlock(InvalidBlock),
}
impl BlockProcessingOutcome {
/// Returns `true` if the block was objectively invalid and we should disregard the peer who
/// sent it.
pub fn is_invalid(&self) -> bool {
match self {
BlockProcessingOutcome::ValidBlock(_) => false,
BlockProcessingOutcome::InvalidBlock(r) => match r {
InvalidBlock::FutureSlot => true,
InvalidBlock::StateRootMismatch => true,
InvalidBlock::ParentUnknown => false,
InvalidBlock::SlotProcessingError(_) => false,
InvalidBlock::PerBlockProcessingError(e) => match e {
BlockProcessingError::Invalid(_) => true,
BlockProcessingError::BeaconStateError(_) => false,
},
},
}
}
}
pub struct BeaconChain<T: ClientDB + Sized, U: SlotClock, F: ForkChoice> {
pub block_store: Arc<BeaconBlockStore<T>>,
pub state_store: Arc<BeaconStateStore<T>>,
@@ -685,10 +705,10 @@ where
// TODO: check the block proposer signature BEFORE doing a state transition. This will
// significantly lower exposure surface to DoS attacks.
// Transition the parent state to the present slot.
// Transition the parent state to the block slot.
let mut state = parent_state;
let previous_block_header = parent_block.block_header();
for _ in state.slot.as_u64()..present_slot.as_u64() {
for _ in state.slot.as_u64()..block.slot.as_u64() {
if let Err(e) = per_slot_processing(&mut state, &previous_block_header, &self.spec) {
return Ok(BlockProcessingOutcome::InvalidBlock(
InvalidBlock::SlotProcessingError(e),