Refactor primitives (#1383)

* create a v1 primitives module

* Improve guide on availability types

* punctuate

* new parachains runtime uses new primitives

* tests of new runtime now use new primitives

* add ErasureChunk to guide

* export erasure chunk from v1 primitives

* subsystem crate uses v1 primitives

* node-primitives uses new v1 primitives

* port overseer to new primitives

* new-proposer uses v1 primitives (no ParachainHost anymore)

* fix no-std compilation for primitives

* service-new uses v1 primitives

* network-bridge uses new primitives

* statement distribution uses v1 primitives

* PoV distribution uses v1 primitives; add PoV::hash fn

* move parachain to v0

* remove inclusion_inherent module and place into v1

* remove everything from primitives crate root

* remove some unused old types from v0 primitives

* point everything else at primitives::v0

* squanch some warns up

* add RuntimeDebug import to no-std as well

* port over statement-table and validation

* fix final errors in validation and node-primitives

* add dummy Ord impl to committed candidate receipt

* guide: update CandidateValidationMessage

* add primitive for validationoutputs

* expand CandidateValidationMessage further

* bikeshed

* add some impls to omitted-validation-data and available-data

* expand CandidateValidationMessage

* make erasure-coding generic over v1/v0

* update usages of erasure-coding

* implement commitments.hash()

* use Arc<Pov> for CandidateValidation

* improve new erasure-coding method names

* fix up candidate backing

* update docs a bit

* fix most tests and add short-circuiting to make_pov_available

* fix remainder of candidate backing tests

* squanching warns

* squanch it up

* some fallout

* overseer fallout

* free from polkadot-test-service hell

polkadot/availability-store/src/lib.rs

@@ -25,12 +25,10 @@
 use futures::prelude::*;
 use futures::channel::{mpsc, oneshot};
 use keystore::KeyStorePtr;
-use polkadot_primitives::{
+use polkadot_primitives::v0::{
 	Hash, Block,
-	parachain::{
-		PoVBlock, AbridgedCandidateReceipt, ErasureChunk,
-		ParachainHost, AvailableData, OmittedValidationData,
-	},
+	PoVBlock, AbridgedCandidateReceipt, ErasureChunk,
+	ParachainHost, AvailableData, OmittedValidationData,
 };
 use sp_runtime::traits::HashFor;
 use sp_blockchain::Result as ClientResult;

polkadot/availability-store/src/store.rs

@@ -19,11 +19,8 @@ use kvdb_rocksdb::{Database, DatabaseConfig};
 use kvdb::{KeyValueDB, DBTransaction};
 use codec::{Encode, Decode};
 use polkadot_erasure_coding as erasure;
-use polkadot_primitives::{
-	Hash,
-	parachain::{
-		ErasureChunk, AvailableData, AbridgedCandidateReceipt,
-	},
+use polkadot_primitives::v0::{
+	Hash, ErasureChunk, AvailableData, AbridgedCandidateReceipt,
 };
 use parking_lot::Mutex;
 
@@ -273,7 +270,7 @@ impl Store {
 			// If there are no block data in the store at this point,
 			// check that they can be reconstructed now and add them to store if they can.
 			if self.execution_data(&candidate_hash).is_none() {
-				if let Ok(available_data) = erasure::reconstruct(
+				if let Ok(available_data) = erasure::reconstruct_v0(
 					n_validators as usize,
 					v.iter().map(|chunk| (chunk.chunk.as_ref(), chunk.index as usize)),
 				)
@@ -390,7 +387,7 @@ impl Store {
 mod tests {
 	use super::*;
 	use polkadot_erasure_coding::{self as erasure};
-	use polkadot_primitives::parachain::{
+	use polkadot_primitives::v0::{
 		Id as ParaId, BlockData, AvailableData, PoVBlock, OmittedValidationData,
 	};
 
@@ -489,7 +486,7 @@ mod tests {
 		let available_data = available_data(&[42; 8]);
 		let n_validators = 5;
 
-		let erasure_chunks = erasure::obtain_chunks(
+		let erasure_chunks = erasure::obtain_chunks_v0(
 			n_validators,
 			&available_data,
 		).unwrap();

polkadot/availability-store/src/worker.rs

@@ -33,8 +33,8 @@ use consensus_common::{
 	import_queue::CacheKeyId,
 };
 use sp_core::traits::SpawnNamed;
-use polkadot_primitives::{Block, BlockId, Hash};
-use polkadot_primitives::parachain::{
+use polkadot_primitives::v0::{
+	Block, BlockId, Hash,
 	ParachainHost, ValidatorId, AbridgedCandidateReceipt, AvailableData,
 	ValidatorPair, ErasureChunk,
 };