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Default fork choice value and intermediates for block import parameters (#4652)

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* consensus, pow: intermediate separation and fail

* Fix compiles

* Update primitives/consensus/common/src/block_import.rs

Co-Authored-By: Robert Habermeier <rphmeier@gmail.com>

* Update primitives/consensus/common/src/block_import.rs

Co-Authored-By: Robert Habermeier <rphmeier@gmail.com>

* Document what None means for `fork_choice` in block import params

Co-authored-by: Robert Habermeier <rphmeier@gmail.com>
This commit is contained in:
Wei Tang
2020-01-23 00:03:38 -08:00
committed by GitHub
parent 9a77b299df
commit 4b2e6a5be2
13 changed files with 289 additions and 149 deletions
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substrate/primitives/consensus/common/src/block_import.rs
+10 -1
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@@ -142,13 +142,21 @@ pub struct BlockImportParams<Block: BlockT, Transaction> {
/// Is this block finalized already?
/// `true` implies instant finality.
pub finalized: bool,
/// Intermediate values that are interpreted by block importers. Each block importer,
/// upon handling a value, removes it from the intermediate list. The final block importer
/// rejects block import if there are still intermediate values that remain unhandled.
pub intermediates: HashMap<Vec<u8>, Vec<u8>>,
/// Auxiliary consensus data produced by the block.
/// Contains a list of key-value pairs. If values are `None`, the keys
/// will be deleted.
pub auxiliary: Vec<(Vec<u8>, Option<Vec<u8>>)>,
/// Fork choice strategy of this import. This should only be set by a
/// synchronous import, otherwise it may race against other imports.
pub fork_choice: ForkChoiceStrategy,
/// `None` indicates that the current verifier or importer cannot yet
/// determine the fork choice value, and it expects subsequent importer
/// to modify it. If `None` is passed all the way down to bottom block
/// importer, the import fails with an `IncompletePipeline` error.
pub fork_choice: Option<ForkChoiceStrategy>,
/// Allow importing the block skipping state verification if parent state is missing.
pub allow_missing_state: bool,
/// Re-validate existing block.
@@ -210,6 +218,7 @@ impl<Block: BlockT, Transaction> BlockImportParams<Block, Transaction> {
storage_changes: None,
finalized: self.finalized,
auxiliary: self.auxiliary,
intermediates: self.intermediates,
allow_missing_state: self.allow_missing_state,
fork_choice: self.fork_choice,
import_existing: self.import_existing,