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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/srml/system/src/lib.rs
+1 -1
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@@ -73,7 +73,7 @@ pub trait Trait: Eq + Clone {
type Origin: Into<Option<RawOrigin<Self::AccountId>>> + From<RawOrigin<Self::AccountId>>;
type Index: Parameter + Member + Default + MaybeDisplay + SimpleArithmetic + Copy;
type BlockNumber: Parameter + Member + MaybeDisplay + SimpleArithmetic + Default + Bounded + Copy + rstd::hash::Hash;
type Hash: Parameter + Member + MaybeDisplay + SimpleBitOps + Default + Copy + CheckEqual + rstd::hash::Hash + AsRef<[u8]>;
type Hash: Parameter + Member + MaybeDisplay + SimpleBitOps + Default + Copy + CheckEqual + rstd::hash::Hash + AsRef<[u8]> + AsMut<[u8]>;
type Hashing: Hash<Output = Self::Hash>;
type Digest: Parameter + Member + Default + traits::Digest<Hash = Self::Hash>;
type AccountId: Parameter + Member + MaybeDisplay + Ord + Default;