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Tidy attestation_production and create docstrings

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This commit is contained in:
Paul Hauner 2019-02-01 15:26:36 +11:00
parent 2ed5f69448
commit 92753fa24e
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1 changed files with 7 additions and 5 deletions
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12
beacon_node/beacon_chain/src/attestation_production.rs
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@ -3,9 +3,10 @@ use types::{AttestationData, Hash256};
#[derive(Debug, PartialEq)] #[derive(Debug, PartialEq)]
pub enum Error { pub enum Error {
SlotTooOld, /// The `justified_block_root` is unknown. This is an internal error.
PresentSlotUnknown, UnknownJustifiedRoot,
StateError, /// The `epoch_boundary_root` is unknown. This is an internal error.
UnknownBoundaryRoot,
} }
impl<T, U> BeaconChain<T, U> impl<T, U> BeaconChain<T, U>
@ -13,13 +14,14 @@ where
T: ClientDB, T: ClientDB,
U: SlotClock, U: SlotClock,
{ {
/// Produce an `AttestationData` that is valid for the present `slot` and given `shard`.
pub fn produce_attestation_data(&self, shard: u64) -> Result<AttestationData, Error> { pub fn produce_attestation_data(&self, shard: u64) -> Result<AttestationData, Error> {
let justified_slot = self.justified_slot(); let justified_slot = self.justified_slot();
let justified_block_root = self let justified_block_root = self
.state .state
.read() .read()
.get_block_root(justified_slot, &self.spec) .get_block_root(justified_slot, &self.spec)
.ok_or_else(|| Error::SlotTooOld)? .ok_or_else(|| Error::UnknownJustifiedRoot)?
.clone(); .clone();
let epoch_boundary_root = self let epoch_boundary_root = self
@ -29,7 +31,7 @@ where
self.state.read().current_epoch_start_slot(&self.spec), self.state.read().current_epoch_start_slot(&self.spec),
&self.spec, &self.spec,
) )
.ok_or_else(|| Error::SlotTooOld)? .ok_or_else(|| Error::UnknownBoundaryRoot)?
.clone(); .clone();
Ok(AttestationData { Ok(AttestationData {