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Finality notification streams (#791)

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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`

* move `tree_route` to client common

* tree_route tests

* return slices in TreeRoute

* apply finality up to parent

* add `finalize_block` call

* adjust formatting

* finality notifications and add last finalized block to chain info

* exhaustive match and comments

* fix sync tests by using non-instant finality
This commit is contained in:
Robert Habermeier
2018-09-24 17:45:37 +01:00
committed by Arkadiy Paronyan
parent ef97973178
commit b02c274374
14 changed files with 665 additions and 225 deletions
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substrate/core/client/src/backend.rs
+2 -5
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@@ -108,11 +108,8 @@ where
fn begin_operation(&self, block: BlockId<Block>) -> error::Result<Self::BlockImportOperation>;
/// Commit block insertion.
fn commit_operation(&self, transaction: Self::BlockImportOperation) -> error::Result<()>;
/// Finalize block with given Id. This should also implicitly finalize all ancestors.
///
/// If the finalized block is not an ancestor of the current "best block", then
/// the chain will be implicitly reorganized to the best chain containing the newly
/// finalized block.
/// Finalize block with given Id. This should only be called if the parent of the given
/// block has been finalized.
fn finalize_block(&self, block: BlockId<Block>) -> error::Result<()>;
/// Returns reference to blockchain backend.
fn blockchain(&self) -> &Self::Blockchain;