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Make collation an optional return (#1787)

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This pr changes the collator interface function to return an optional
collation instead of a collation. This is required as the parachain
itself can fail to generate a valid collation for various reason. Now if
the collation fails it will return `None`.

Besides that the pr adds some `RuntimeDebug` derive for `ValidationData`
and removes some whitespaces.
This commit is contained in:
Bastian Köcher
2020-10-06 11:57:10 +02:00
committed by GitHub
parent 22e7d54f4d
commit a4662104db
7 changed files with 51 additions and 34 deletions
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polkadot/primitives/src/v1.rs
+2 -2
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@@ -244,8 +244,8 @@ impl Ord for CommittedCandidateReceipt {
/// Nevertheless, we expose it so the backing validators can validate the outputs of a
/// candidate before voting to submit it to the relay-chain and so collators can
/// collate candidates that satisfy the criteria implied these transient validation data.
#[derive(PartialEq, Eq, Clone, Encode, Decode)]
#[cfg_attr(feature = "std", derive(Debug, Default))]
#[derive(PartialEq, Eq, Clone, Encode, Decode, RuntimeDebug)]
#[cfg_attr(feature = "std", derive(Default))]
pub struct ValidationData<N = BlockNumber> {
/// The persisted validation data.
pub persisted: PersistedValidationData<N>,