* Simplify some Option / Result / ? operator patterns
When those match a combinator exactly.
Tool-aided by [comby-rust](https://github.com/huitseeker/comby-rust).
* adjust after review
* adjust post-review
* primitives/runtime: initial changes on supporting multiple Justifications
* primitives/runtime: make Justifications strongly typed
* Encode/decode Justifications
* primitives/runtime: add Justification type
* backend: apply_finality and finalize_block takes a single Justification
* manual-seal: create engine id and let rpc take encoded justification
* backend: skeleton functions for appending justifications
* backend: initial implementation append_justification
Initial implementation of append_justification on the Backend trait, and also remove unused skeleton
functions for append_justificaton on Finaziler trait.
k
* backend: guard against duplicate consensus engine id
* client/db: add check for block finality
* client/api: add append_justification to in_mem db
* client/light: add no-op append_justification
* network: fix decode call for Justification
* network: only send a single Justification in BlockData
* network: minor comment update
* protocol: update field names to distinguish single justification
* client: further field renames to plural
* client: update function names to plural justifications
* client/db: upgrade existing database for new format
* network: remove dependency on grandpa crate
* db: fix check for finalized block
* grandpa: check for multiple grandpa justifications hwne importing
* backend: update Finalizer trait to take multiple Justifications
* db: remove debugging statements in migration code
* manual-seal: update note about engine id
* db: fix check for finalized block
* client: update variable name to reflect it is now plural
* grandpa: fix incorrect empty Justications in test
* primitives: make Justifications opaque to avoid being empty
* network: fix detecting empty Justification
* runtime: doc strings for Justifications functions
* runtime: add into_justifications
* primitives: check for duplicates in when adding to Justifications
* network/test: use real grandpa engine id in test
* client: fix reviewer comments
* primitives: rename Justifications::push to append
* backend: revert changes to Finalizer trait
* backend: revert mark_finalized
* backend: revert changes to finalize_block
* backend: revert finalized_blocks
* db: add a quick early return for performance
* client: minor reviewer comments
* service/test: use local ConsensusEngineId
* network: add link to issue for sending multiple Justifications
* Apply suggestions from code review
Co-authored-by: Pierre Krieger <pierre.krieger1708@gmail.com>
* Apply suggestions from code review
Co-authored-by: Pierre Krieger <pierre.krieger1708@gmail.com>
* network: tweaks to review suggestions
* network: revert change to BlockData for backwards compatibility
* Apply suggestion from code review
Co-authored-by: Pierre Krieger <pierre.krieger1708@gmail.com>
* Apply suggestions from code review
Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>
* primitives: update doc comment for Justifications
* client/db/upgrade: avoid grandpa crate dependency
* consensus: revert to single Justification for import_justification
* primitives: improve justifications docs
* style cleanups
* use and_then
* client: rename JUSTIFICATIONS db column
* network: revert to using FRNK in network-test
Co-authored-by: Pierre Krieger <pierre.krieger1708@gmail.com>
Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>
Co-authored-by: André Silva <andrerfosilva@gmail.com>
This reduces the usage of `Blake2Hasher` in the code base and replaces
it with `BlakeTwo256`. The most important change is the removal of the
custom extern function for `Blake2Hasher`. The runtime `Hash` trait is
now also simplified and directly requires that the implementing type
implements `Hashable`.
François Garillot