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Introduce notion of finality to substrate (#760)

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* finalization for in_mem

* fetch last finalized block

* pruning: use canonical term instead of final

* finalize blocks in full node

* begin to port light client DB

* add tree-route

* keep number index consistent in full nodes

* fix tests

* disable cache and finish porting light client

* add AsMut to system module

* final leaf is always best

* fix all tests

* Fix comment and trace

* removed unused Into call

* add comment on behavior of `finalize_block`
This commit is contained in:
Robert Habermeier
2018-09-21 15:56:21 +02:00
committed by Gav Wood
parent 28cc4d0fd6
commit b7d095a2e0
19 changed files with 976 additions and 370 deletions
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substrate/core/sr-primitives/src/traits.rs
+3 -3
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@@ -242,7 +242,7 @@ tuple_impl!(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W,
pub trait Hash: 'static + MaybeSerializeDebug + Clone + Eq + PartialEq { // Stupid bug in the Rust compiler believes derived
// traits must be fulfilled by all type parameters.
/// The hash type produced.
type Output: Member + AsRef<[u8]>;
type Output: Member + AsRef<[u8]> + AsMut<[u8]>;
/// Produce the hash of some byte-slice.
fn hash(s: &[u8]) -> Self::Output;
@@ -373,7 +373,7 @@ impl<T: Send + Sync + Sized + MaybeSerializeDebug + Eq + PartialEq + Clone + 'st
/// You can also create a `new` one from those fields.
pub trait Header: Clone + Send + Sync + Codec + Eq + MaybeSerializeDebug + 'static {
type Number: Member + ::rstd::hash::Hash + Copy + MaybeDisplay + SimpleArithmetic + Codec;
type Hash: Member + ::rstd::hash::Hash + Copy + MaybeDisplay + Default + SimpleBitOps + Codec + AsRef<[u8]>;
type Hash: Member + ::rstd::hash::Hash + Copy + MaybeDisplay + Default + SimpleBitOps + Codec + AsRef<[u8]> + AsMut<[u8]>;
type Hashing: Hash<Output = Self::Hash>;
type Digest: Digest<Hash = Self::Hash>;
@@ -412,7 +412,7 @@ pub trait Header: Clone + Send + Sync + Codec + Eq + MaybeSerializeDebug + 'stat
pub trait Block: Clone + Send + Sync + Codec + Eq + MaybeSerializeDebug + 'static {
type Extrinsic: Member + Codec;
type Header: Header<Hash=Self::Hash>;
type Hash: Member + ::rstd::hash::Hash + Copy + MaybeDisplay + Default + SimpleBitOps + Codec + AsRef<[u8]>;
type Hash: Member + ::rstd::hash::Hash + Copy + MaybeDisplay + Default + SimpleBitOps + Codec + AsRef<[u8]> + AsMut<[u8]>;
fn header(&self) -> &Self::Header;
fn extrinsics(&self) -> &[Self::Extrinsic];