Merge pull request #6 from substrate-developer-hub/shawntabrizi-update-node-template

Update to `d1cd01c74`

Cargo.toml

@@ -1,3 +1,19 @@
+[[bin]]
+name = 'node-template'
+path = 'src/main.rs'
+
+[package]
+authors = ['Anonymous']
+build = 'build.rs'
+edition = '2018'
+name = 'node-template'
+version = '2.0.0'
+
+[build-dependencies]
+vergen = '3.0.4'
+[profile.release]
+panic = 'unwind'
+
 [dependencies]
 derive_more = '0.15.0'
 exit-future = '0.1.4'
@@ -7,20 +23,20 @@ parking_lot = '0.9.0'
 tokio = '0.1.22'
 trie-root = '0.15.2'
 
-[dependencies.babe]
+[dependencies.aura]
 git = 'https://github.com/paritytech/substrate.git'
-package = 'substrate-consensus-babe'
+package = 'substrate-consensus-aura'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
-[dependencies.babe-primitives]
+[dependencies.aura-primitives]
 git = 'https://github.com/paritytech/substrate.git'
-package = 'substrate-consensus-babe-primitives'
+package = 'substrate-consensus-aura-primitives'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.basic-authorship]
 git = 'https://github.com/paritytech/substrate.git'
 package = 'substrate-basic-authorship'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.codec]
 package = 'parity-scale-codec'
@@ -33,22 +49,22 @@ version = '3.1.3'
 [dependencies.grandpa]
 git = 'https://github.com/paritytech/substrate.git'
 package = 'substrate-finality-grandpa'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.grandpa-primitives]
 git = 'https://github.com/paritytech/substrate.git'
 package = 'substrate-finality-grandpa-primitives'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.inherents]
 git = 'https://github.com/paritytech/substrate.git'
 package = 'substrate-inherents'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.network]
 git = 'https://github.com/paritytech/substrate.git'
 package = 'substrate-network'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.node-template-runtime]
 path = 'runtime'
@@ -56,48 +72,32 @@ path = 'runtime'
 [dependencies.primitives]
 git = 'https://github.com/paritytech/substrate.git'
 package = 'substrate-primitives'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.sr-io]
 git = 'https://github.com/paritytech/substrate.git'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.substrate-cli]
 git = 'https://github.com/paritytech/substrate.git'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.substrate-client]
 git = 'https://github.com/paritytech/substrate.git'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.substrate-executor]
 git = 'https://github.com/paritytech/substrate.git'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.substrate-service]
 git = 'https://github.com/paritytech/substrate.git'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.transaction-pool]
 git = 'https://github.com/paritytech/substrate.git'
 package = 'substrate-transaction-pool'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
-[profile.release]
-panic = 'unwind'
-
-[[bin]]
-name = 'node-template'
-path = 'src/main.rs'
 
 [workspace]
 members = ['runtime']
-
-[package]
-authors = ['Anonymous']
-build = 'build.rs'
-edition = '2018'
-name = 'node-template'
-version = '2.0.0'
-
-[build-dependencies]
-vergen = '3.0.4'

README.md

@@ -10,7 +10,7 @@ Install Rust:
 curl https://sh.rustup.rs -sSf | sh
 ```
 
-Install required tools:
+Initialize your Wasm Build environment:
 
 ```bash
 ./scripts/init.sh
@@ -19,17 +19,23 @@ Install required tools:
 Build Wasm and native code:
 
 ```bash
-cargo build
+cargo build --release
 ```
 
 ## Run
 
 ### Single node development chain
 
-You can start a development chain with:
+Purge any existing development chain state:
 
 ```bash
-cargo run -- --dev
+./target/release/node-template purge-chain --dev
+```
+
+Start a development chain with:
+
+```bash
+./target/release/node-template --dev
 ```
 
 Detailed logs may be shown by running the node with the following environment variables set: `RUST_LOG=debug RUST_BACKTRACE=1 cargo run -- --dev`.

runtime/Cargo.toml

@@ -1,26 +1,62 @@
-[dependencies.babe]
+[package]
-default-features = false
+authors = ['Anonymous']
-git = 'https://github.com/paritytech/substrate.git'
+edition = '2018'
-package = 'srml-babe'
+name = 'node-template-runtime'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+version = '2.0.0'
+[build-dependencies.wasm-builder-runner]
+package = 'substrate-wasm-builder-runner'
+version = '1.0.2'
 
-[dependencies.babe-primitives]
+[features]
-default-features = false
+default = ['std']
+std = [
+    'codec/std',
+    'client/std',
+    'rstd/std',
+    'runtime-io/std',
+    'support/std',
+    'balances/std',
+    'aura/std',
+    'aura-primitives/std',
+    'grandpa/std',
+    'executive/std',
+    'indices/std',
+    'primitives/std',
+    'sr-primitives/std',
+    'randomness-collective-flip/std',
+    'system/std',
+    'timestamp/std',
+    'sudo/std',
+    'transaction-payment/std',
+    'version/std',
+    'serde',
+    'safe-mix/std',
+    'offchain-primitives/std',
+    'substrate-session/std',
+]
+[dependencies.aura]
+default_features = false
 git = 'https://github.com/paritytech/substrate.git'
-package = 'substrate-consensus-babe-primitives'
+package = 'srml-aura'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
+
+[dependencies.aura-primitives]
+default_features = false
+git = 'https://github.com/paritytech/substrate.git'
+package = 'substrate-consensus-aura-primitives'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.balances]
 default_features = false
 git = 'https://github.com/paritytech/substrate.git'
 package = 'srml-balances'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.client]
 default_features = false
 git = 'https://github.com/paritytech/substrate.git'
 package = 'substrate-client'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.codec]
 default-features = false
@@ -32,43 +68,49 @@ version = '1.0.0'
 default_features = false
 git = 'https://github.com/paritytech/substrate.git'
 package = 'srml-executive'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.grandpa]
-default-features = false
+default_features = false
 git = 'https://github.com/paritytech/substrate.git'
 package = 'srml-grandpa'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.indices]
 default_features = false
 git = 'https://github.com/paritytech/substrate.git'
 package = 'srml-indices'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.offchain-primitives]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
 package = 'substrate-offchain-primitives'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.primitives]
 default_features = false
 git = 'https://github.com/paritytech/substrate.git'
 package = 'substrate-primitives'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
+
+[dependencies.randomness-collective-flip]
+default_features = false
+git = 'https://github.com/paritytech/substrate.git'
+package = 'srml-randomness-collective-flip'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.rstd]
 default_features = false
 git = 'https://github.com/paritytech/substrate.git'
 package = 'sr-std'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.runtime-io]
 default_features = false
 git = 'https://github.com/paritytech/substrate.git'
 package = 'sr-io'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.safe-mix]
 default-features = false
@@ -82,74 +124,45 @@ version = '1.0.101'
 [dependencies.sr-primitives]
 default_features = false
 git = 'https://github.com/paritytech/substrate.git'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.substrate-session]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.sudo]
 default_features = false
 git = 'https://github.com/paritytech/substrate.git'
 package = 'srml-sudo'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.support]
 default_features = false
 git = 'https://github.com/paritytech/substrate.git'
 package = 'srml-support'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.system]
 default_features = false
 git = 'https://github.com/paritytech/substrate.git'
 package = 'srml-system'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.timestamp]
 default_features = false
 git = 'https://github.com/paritytech/substrate.git'
 package = 'srml-timestamp'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
+
+[dependencies.transaction-payment]
+default_features = false
+git = 'https://github.com/paritytech/substrate.git'
+package = 'srml-transaction-payment'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
 
 [dependencies.version]
 default_features = false
 git = 'https://github.com/paritytech/substrate.git'
 package = 'sr-version'
-rev = '3dedd246c62255ba6f9b777ecba318dfc2078d85'
+rev = 'd1cd01c74e8d5550396cb654f9a3f1b641efdf4c'
-[build-dependencies.wasm-builder-runner]
-package = 'substrate-wasm-builder-runner'
-version = '1.0.2'
-
-[package]
-authors = ['Anonymous']
-edition = '2018'
-name = 'node-template-runtime'
-version = '2.0.0'
-
-[features]
-default = ['std']
-std = [
-    'codec/std',
-    'client/std',
-    'rstd/std',
-    'runtime-io/std',
-    'support/std',
-    'balances/std',
-    'babe/std',
-    'babe-primitives/std',
-    'executive/std',
-    'indices/std',
-    'grandpa/std',
-    'primitives/std',
-    'sr-primitives/std',
-    'system/std',
-    'timestamp/std',
-    'sudo/std',
-    'version/std',
-    'serde',
-    'safe-mix/std',
-    'offchain-primitives/std',
-    'substrate-session/std',
-]

runtime/build.rs

@@ -19,7 +19,7 @@ use wasm_builder_runner::{build_current_project_with_rustflags, WasmBuilderSourc
 fn main() {
 	build_current_project_with_rustflags(
 		"wasm_binary.rs",
-		WasmBuilderSource::Crates("1.0.7"),
+		WasmBuilderSource::Crates("1.0.8"),
 		// This instructs LLD to export __heap_base as a global variable, which is used by the
 		// external memory allocator.
 		"-Clink-arg=--export=__heap_base",

runtime/src/lib.rs

@@ -16,13 +16,13 @@ use sr_primitives::{
 };
 use sr_primitives::traits::{NumberFor, BlakeTwo256, Block as BlockT, StaticLookup, Verify, ConvertInto};
 use sr_primitives::weights::Weight;
-use babe::{AuthorityId as BabeId};
-use grandpa::{AuthorityId as GrandpaId, AuthorityWeight as GrandpaWeight};
-use grandpa::fg_primitives;
 use client::{
 	block_builder::api::{CheckInherentsResult, InherentData, self as block_builder_api},
 	runtime_api as client_api, impl_runtime_apis
 };
+use aura_primitives::sr25519::AuthorityId as AuraId;
+use grandpa::{AuthorityId as GrandpaId, AuthorityWeight as GrandpaWeight};
+use grandpa::fg_primitives;
 use version::RuntimeVersion;
 #[cfg(feature = "std")]
 use version::NativeVersion;
@@ -33,7 +33,7 @@ pub use sr_primitives::BuildStorage;
 pub use timestamp::Call as TimestampCall;
 pub use balances::Call as BalancesCall;
 pub use sr_primitives::{Permill, Perbill};
-pub use support::{StorageValue, construct_runtime, parameter_types};
+pub use support::{StorageValue, construct_runtime, parameter_types, traits::Randomness};
 
 /// An index to a block.
 pub type BlockNumber = u32;
@@ -80,14 +80,12 @@ pub mod opaque {
 	/// Opaque block identifier type.
 	pub type BlockId = generic::BlockId<Block>;
 
-	pub type SessionHandlers = (Grandpa, Babe);
-
 	impl_opaque_keys! {
 		pub struct SessionKeys {
+			#[id(key_types::AURA)]
+			pub aura: AuraId,
 			#[id(key_types::GRANDPA)]
 			pub grandpa: GrandpaId,
-			#[id(key_types::BABE)]
-			pub babe: BabeId,
 		}
 	}
 }
@@ -102,20 +100,6 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	apis: RUNTIME_API_VERSIONS,
 };
 
-/// Constants for Babe.
-
-/// Since BABE is probabilistic this is the average expected block time that
-/// we are targetting. Blocks will be produced at a minimum duration defined
-/// by `SLOT_DURATION`, but some slots will not be allocated to any
-/// authority and hence no block will be produced. We expect to have this
-/// block time on average following the defined slot duration and the value
-/// of `c` configured for BABE (where `1 - c` represents the probability of
-/// a slot being empty).
-/// This value is only used indirectly to define the unit constants below
-/// that are expressed in blocks. The rest of the code should use
-/// `SLOT_DURATION` instead (like the timestamp module for calculating the
-/// minimum period).
-/// <https://research.web3.foundation/en/latest/polkadot/BABE/Babe/#6-practical-results>
 pub const MILLISECS_PER_BLOCK: u64 = 6000;
 
 pub const SLOT_DURATION: u64 = MILLISECS_PER_BLOCK;
@@ -166,30 +150,22 @@ impl system::Trait for Runtime {
 	type Header = generic::Header<BlockNumber, BlakeTwo256>;
 	/// The ubiquitous event type.
 	type Event = Event;
-	/// Update weight (to fee) multiplier per-block.
-	type WeightMultiplierUpdate = ();
 	/// The ubiquitous origin type.
 	type Origin = Origin;
 	/// Maximum number of block number to block hash mappings to keep (oldest pruned first).
 	type BlockHashCount = BlockHashCount;
-	/// Maximum weight of each block. With a default weight system of 1byte == 1weight, 4mb is ok.
+	/// Maximum weight of each block.
 	type MaximumBlockWeight = MaximumBlockWeight;
 	/// Maximum size of all encoded transactions (in bytes) that are allowed in one block.
 	type MaximumBlockLength = MaximumBlockLength;
 	/// Portion of the block weight that is available to all normal transactions.
 	type AvailableBlockRatio = AvailableBlockRatio;
+	/// Version of the runtime.
 	type Version = Version;
 }
 
-parameter_types! {
+impl aura::Trait for Runtime {
-	pub const EpochDuration: u64 = EPOCH_DURATION_IN_BLOCKS as u64;
+	type AuthorityId = AuraId;
-	pub const ExpectedBlockTime: u64 = MILLISECS_PER_BLOCK;
-}
-
-impl babe::Trait for Runtime {
-	type EpochDuration = EpochDuration;
-	type ExpectedBlockTime = ExpectedBlockTime;
-	type EpochChangeTrigger = babe::SameAuthoritiesForever;
 }
 
 impl grandpa::Trait for Runtime {
@@ -215,7 +191,7 @@ parameter_types! {
 impl timestamp::Trait for Runtime {
 	/// A timestamp: milliseconds since the unix epoch.
 	type Moment = u64;
-	type OnTimestampSet = Babe;
+	type OnTimestampSet = Aura;
 	type MinimumPeriod = MinimumPeriod;
 }
 
@@ -223,8 +199,6 @@ parameter_types! {
 	pub const ExistentialDeposit: u128 = 500;
 	pub const TransferFee: u128 = 0;
 	pub const CreationFee: u128 = 0;
-	pub const TransactionBaseFee: u128 = 0;
-	pub const TransactionByteFee: u128 = 1;
 }
 
 impl balances::Trait for Runtime {
@@ -236,15 +210,25 @@ impl balances::Trait for Runtime {
 	type OnNewAccount = Indices;
 	/// The ubiquitous event type.
 	type Event = Event;
-	type TransactionPayment = ();
 	type DustRemoval = ();
 	type TransferPayment = ();
 	type ExistentialDeposit = ExistentialDeposit;
 	type TransferFee = TransferFee;
 	type CreationFee = CreationFee;
+}
+
+parameter_types! {
+	pub const TransactionBaseFee: Balance = 0;
+	pub const TransactionByteFee: Balance = 1;
+}
+
+impl transaction_payment::Trait for Runtime {
+	type Currency = balances::Module<Runtime>;
+	type OnTransactionPayment = ();
 	type TransactionBaseFee = TransactionBaseFee;
 	type TransactionByteFee = TransactionByteFee;
 	type WeightToFee = ConvertInto;
+	type FeeMultiplierUpdate = ();
 }
 
 impl sudo::Trait for Runtime {
@@ -265,13 +249,15 @@ construct_runtime!(
 	{
 		System: system::{Module, Call, Storage, Config, Event},
 		Timestamp: timestamp::{Module, Call, Storage, Inherent},
-		Babe: babe::{Module, Call, Storage, Config, Inherent(Timestamp)},
+		Aura: aura::{Module, Config<T>, Inherent(Timestamp)},
 		Grandpa: grandpa::{Module, Call, Storage, Config, Event},
 		Indices: indices::{default, Config<T>},
 		Balances: balances::{default, Error},
+		TransactionPayment: transaction_payment::{Module, Storage},
 		Sudo: sudo,
 		// Used for the module template in `./template.rs`
 		TemplateModule: template::{Module, Call, Storage, Event<T>},
+		RandomnessCollectiveFlip: randomness_collective_flip::{Module, Call, Storage},
 	}
 );
 
@@ -292,7 +278,7 @@ pub type SignedExtra = (
 	system::CheckEra<Runtime>,
 	system::CheckNonce<Runtime>,
 	system::CheckWeight<Runtime>,
-	balances::TakeFees<Runtime>
+	transaction_payment::ChargeTransactionPayment<Runtime>
 );
 /// Unchecked extrinsic type as expected by this runtime.
 pub type UncheckedExtrinsic = generic::UncheckedExtrinsic<Address, Call, Signature, SignedExtra>;
@@ -340,7 +326,7 @@ impl_runtime_apis! {
 		}
 
 		fn random_seed() -> <Block as BlockT>::Hash {
-			System::random_seed()
+			RandomnessCollectiveFlip::random_seed()
 		}
 	}
 
@@ -356,27 +342,13 @@ impl_runtime_apis! {
 		}
 	}
 
-	impl fg_primitives::GrandpaApi<Block> for Runtime {
+	impl aura_primitives::AuraApi<Block, AuraId> for Runtime {
-		fn grandpa_authorities() -> Vec<(GrandpaId, GrandpaWeight)> {
+		fn slot_duration() -> u64 {
-			Grandpa::grandpa_authorities()
+			Aura::slot_duration()
 		}
-	}
 		
-	impl babe_primitives::BabeApi<Block> for Runtime {
+		fn authorities() -> Vec<AuraId> {
-		fn configuration() -> babe_primitives::BabeConfiguration {
+			Aura::authorities()
-			// The choice of `c` parameter (where `1 - c` represents the
-			// probability of a slot being empty), is done in accordance to the
-			// slot duration and expected target block time, for safely
-			// resisting network delays of maximum two seconds.
-			// <https://research.web3.foundation/en/latest/polkadot/BABE/Babe/#6-practical-results>
-			babe_primitives::BabeConfiguration {
-				slot_duration: Babe::slot_duration(),
-				epoch_length: EpochDuration::get(),
-				c: PRIMARY_PROBABILITY,
-				genesis_authorities: Babe::authorities(),
-				randomness: Babe::randomness(),
-				secondary_slots: true,
-			}
 		}
 	}
 
@@ -386,4 +358,10 @@ impl_runtime_apis! {
 			opaque::SessionKeys::generate(seed)
 		}
 	}
+
+	impl fg_primitives::GrandpaApi<Block> for Runtime {
+		fn grandpa_authorities() -> Vec<(GrandpaId, GrandpaWeight)> {
+			Grandpa::grandpa_authorities()
+		}
+	}
 }

runtime/src/template.rs

@@ -69,12 +69,11 @@ decl_event!(
 mod tests {
 	use super::*;
 
-	use runtime_io::with_externalities;
+	use primitives::H256;
-	use primitives::{H256, Blake2Hasher};
 	use support::{impl_outer_origin, assert_ok, parameter_types};
-	use sr_primitives::{traits::{BlakeTwo256, IdentityLookup}, testing::Header};
+	use sr_primitives::{
-	use sr_primitives::weights::Weight;
+		traits::{BlakeTwo256, IdentityLookup}, testing::Header, weights::Weight, Perbill,
-	use sr_primitives::Perbill;
+	};
 
 	impl_outer_origin! {
 		pub enum Origin for Test {}
@@ -101,7 +100,6 @@ mod tests {
 		type AccountId = u64;
 		type Lookup = IdentityLookup<Self::AccountId>;
 		type Header = Header;
-		type WeightMultiplierUpdate = ();
 		type Event = ();
 		type BlockHashCount = BlockHashCount;
 		type MaximumBlockWeight = MaximumBlockWeight;
@@ -116,13 +114,13 @@ mod tests {
 
 	// This function basically just builds a genesis storage key/value store according to
 	// our desired mockup.
-	fn new_test_ext() -> runtime_io::TestExternalities<Blake2Hasher> {
+	fn new_test_ext() -> runtime_io::TestExternalities {
 		system::GenesisConfig::default().build_storage::<Test>().unwrap().into()
 	}
 
 	#[test]
 	fn it_works_for_default_value() {
-		with_externalities(&mut new_test_ext(), || {
+		new_test_ext().execute_with(|| {
 			// Just a dummy test for the dummy funtion `do_something`
 			// calling the `do_something` function with a value 42
 			assert_ok!(TemplateModule::do_something(Origin::signed(1), 42));

scripts/init.sh

@@ -10,7 +10,3 @@ if [ -z $CI_PROJECT_NAME ] ; then
 fi
 
 rustup target add wasm32-unknown-unknown --toolchain nightly
-
-# Install wasm-gc. It's useful for stripping slimming down wasm binaries.
-command -v wasm-gc || \
-	cargo +nightly install --git https://github.com/alexcrichton/wasm-gc --force

src/chain_spec.rs

@@ -1,9 +1,9 @@
 use primitives::{Pair, Public};
 use node_template_runtime::{
-	AccountId, BabeConfig, BalancesConfig, GenesisConfig, GrandpaConfig,
+	AccountId, AuraConfig, BalancesConfig, GenesisConfig, GrandpaConfig,
 	SudoConfig, IndicesConfig, SystemConfig, WASM_BINARY, 
 };
-use babe_primitives::{AuthorityId as BabeId};
+use aura_primitives::sr25519::{AuthorityId as AuraId};
 use grandpa_primitives::{AuthorityId as GrandpaId};
 use substrate_service;
 
@@ -31,13 +31,11 @@ pub fn get_from_seed<TPublic: Public>(seed: &str) -> <TPublic::Pair as Pair>::Pu
 		.public()
 }
 
-/// Helper function to generate stash, controller and session key from seed
+/// Helper function to generate an authority key for Aura
-pub fn get_authority_keys_from_seed(seed: &str) -> (AccountId, AccountId, GrandpaId, BabeId) {
+pub fn get_authority_keys_from_seed(s: &str) -> (AuraId, GrandpaId) { 
 	(
-		get_from_seed::<AccountId>(&format!("{}//stash", seed)),
+		get_from_seed::<AuraId>(s),
-		get_from_seed::<AccountId>(seed),
+		get_from_seed::<GrandpaId>(s),
-		get_from_seed::<GrandpaId>(seed),
-		get_from_seed::<BabeId>(seed),
 	)
 }
 
@@ -106,7 +104,7 @@ impl Alternative {
 	}
 }
 
-fn testnet_genesis(initial_authorities: Vec<(AccountId, AccountId, GrandpaId, BabeId)>,
+fn testnet_genesis(initial_authorities: Vec<(AuraId, GrandpaId)>,
 	root_key: AccountId, 
 	endowed_accounts: Vec<AccountId>,
 	_enable_println: bool) -> GenesisConfig {
@@ -125,11 +123,11 @@ fn testnet_genesis(initial_authorities: Vec<(AccountId, AccountId, GrandpaId, Ba
 		sudo: Some(SudoConfig {
 			key: root_key,
 		}),
-		babe: Some(BabeConfig {
+		aura: Some(AuraConfig {
-			authorities: initial_authorities.iter().map(|x| (x.3.clone(), 1)).collect(),
+			authorities: initial_authorities.iter().map(|x| (x.0.clone())).collect(),
 		}),
 		grandpa: Some(GrandpaConfig {
-			authorities: initial_authorities.iter().map(|x| (x.2.clone(), 1)).collect(),
+			authorities: initial_authorities.iter().map(|x| (x.1.clone(), 1)).collect(),
 		}),
 	}
 }

src/cli.rs

@@ -5,6 +5,7 @@ use tokio::runtime::Runtime;
 pub use substrate_cli::{VersionInfo, IntoExit, error};
 use substrate_cli::{informant, parse_and_prepare, ParseAndPrepare, NoCustom};
 use substrate_service::{AbstractService, Roles as ServiceRoles, Configuration};
+use aura_primitives::sr25519::{AuthorityPair as AuraPair};
 use crate::chain_spec;
 use log::info;
 

src/service.rs

@@ -3,16 +3,16 @@
 use std::sync::Arc;
 use std::time::Duration;
 use substrate_client::LongestChain;
-use babe;
-use grandpa::{self, FinalityProofProvider as GrandpaFinalityProofProvider};
 use futures::prelude::*;
 use node_template_runtime::{self, GenesisConfig, opaque::Block, RuntimeApi};
 use substrate_service::{error::{Error as ServiceError}, AbstractService, Configuration, ServiceBuilder};
 use transaction_pool::{self, txpool::{Pool as TransactionPool}};
 use inherents::InherentDataProviders;
-use network::construct_simple_protocol;
+use network::{construct_simple_protocol};
 use substrate_executor::native_executor_instance;
 pub use substrate_executor::NativeExecutor;
+use aura_primitives::sr25519::{AuthorityPair as AuraPair};
+use grandpa::{self, FinalityProofProvider as GrandpaFinalityProofProvider};
 
 // Our native executor instance.
 native_executor_instance!(
@@ -44,33 +44,26 @@ macro_rules! new_full_start {
 			.with_transaction_pool(|config, client|
 				Ok(transaction_pool::txpool::Pool::new(config, transaction_pool::FullChainApi::new(client)))
 			)?
-			.with_import_queue(|_config, client, mut select_chain, _transaction_pool| {
+			.with_import_queue(|_config, client, mut select_chain, transaction_pool| {
 				let select_chain = select_chain.take()
 					.ok_or_else(|| substrate_service::Error::SelectChainRequired)?;
+
 				let (grandpa_block_import, grandpa_link) =
 					grandpa::block_import::<_, _, _, node_template_runtime::RuntimeApi, _, _>(
 						client.clone(), &*client, select_chain
 					)?;
-				let justification_import = grandpa_block_import.clone();
 
-				let (babe_block_import, babe_link) = babe::block_import(
+				let import_queue = aura::import_queue::<_, _, AuraPair, _>(
-					babe::Config::get_or_compute(&*client)?,
+					aura::SlotDuration::get_or_compute(&*client)?,
-					grandpa_block_import,
+					Box::new(grandpa_block_import.clone()),
-					client.clone(),
+					Some(Box::new(grandpa_block_import.clone())),
-					client.clone(),
-				)?;
-
-				let import_queue = babe::import_queue(
-					babe_link.clone(),
-					babe_block_import.clone(),
-					Some(Box::new(justification_import)),
 					None,
-					client.clone(),
 					client,
 					inherent_data_providers.clone(),
+					Some(transaction_pool),
 				)?;
 
-				import_setup = Some((babe_block_import, grandpa_link, babe_link));
+				import_setup = Some((grandpa_block_import, grandpa_link));
 
 				Ok(import_queue)
 			})?;
@@ -83,24 +76,23 @@ macro_rules! new_full_start {
 pub fn new_full<C: Send + Default + 'static>(config: Configuration<C, GenesisConfig>)
 	-> Result<impl AbstractService, ServiceError>
 {
-
 	let is_authority = config.roles.is_authority();
+	let force_authoring = config.force_authoring;
 	let name = config.name.clone();
 	let disable_grandpa = config.disable_grandpa;
-	let force_authoring = config.force_authoring;
 
 	let (builder, mut import_setup, inherent_data_providers) = new_full_start!(config);
 
+	let (block_import, grandpa_link) =
+		import_setup.take()
+			.expect("Link Half and Block Import are present for Full Services or setup failed before. qed");
+
 	let service = builder.with_network_protocol(|_| Ok(NodeProtocol::new()))?
 		.with_finality_proof_provider(|client, backend|
 			Ok(Arc::new(GrandpaFinalityProofProvider::new(backend, client)) as _)
 		)?
 		.build()?;
 
-	let (block_import, grandpa_link, babe_link) =
-		import_setup.take()
-			.expect("Link Half and Block Import are present for Full Services or setup failed before. qed");
-
 	if is_authority {
 		let proposer = basic_authorship::ProposerFactory {
 			client: service.client(),
@@ -111,22 +103,21 @@ pub fn new_full<C: Send + Default + 'static>(config: Configuration<C, GenesisCon
 		let select_chain = service.select_chain()
 			.ok_or(ServiceError::SelectChainRequired)?;
 
-		let babe_config = babe::BabeParams {
+		let aura = aura::start_aura::<_, _, _, _, _, AuraPair, _, _, _>(
-			keystore: service.keystore(),
+			aura::SlotDuration::get_or_compute(&*client)?,
 			client,
 			select_chain,
-			env: proposer,
 			block_import,
-			sync_oracle: service.network(),
+			proposer,
-			inherent_data_providers: inherent_data_providers.clone(),
+			service.network(),
+			inherent_data_providers.clone(),
 			force_authoring,
-			babe_link,
+			service.keystore(),
-		};
+		)?;
 
-		let babe = babe::start_babe(babe_config)?;
+		let select = aura.select(service.on_exit()).then(|_| Ok(()));
-		let select = babe.select(service.on_exit()).then(|_| Ok(()));
 
-		// the BABE authoring task is considered infallible, i.e. if it
+		// the AURA authoring task is considered essential, i.e. if it
 		// fails we take down the service with it.
 		service.spawn_essential_task(select);
 	}
@@ -158,6 +149,7 @@ pub fn new_full<C: Send + Default + 'static>(config: Configuration<C, GenesisCon
 				inherent_data_providers: inherent_data_providers.clone(),
 				on_exit: service.on_exit(),
 				telemetry_on_connect: Some(service.telemetry_on_connect_stream()),
+				voting_rule: grandpa::VotingRulesBuilder::default().build(),
 			};
 
 			// the GRANDPA voter task is considered infallible, i.e.
@@ -196,26 +188,18 @@ pub fn new_light<C: Send + Default + 'static>(config: Configuration<C, GenesisCo
 			let grandpa_block_import = grandpa::light_block_import::<_, _, _, RuntimeApi, _>(
 				client.clone(), backend, Arc::new(fetch_checker), client.clone()
 			)?;
-
 			let finality_proof_import = grandpa_block_import.clone();
 			let finality_proof_request_builder =
 				finality_proof_import.create_finality_proof_request_builder();
 
-			let (babe_block_import, babe_link) = babe::block_import(
+			let import_queue = aura::import_queue::<_, _, AuraPair, ()>(
-				babe::Config::get_or_compute(&*client)?,
+				aura::SlotDuration::get_or_compute(&*client)?,
-				grandpa_block_import,
+				Box::new(grandpa_block_import),
-				client.clone(),
-				client.clone(),
-			)?;
-
-			let import_queue = babe::import_queue(
-				babe_link.clone(),
-				babe_block_import,
 				None,
 				Some(Box::new(finality_proof_import)),
-				client.clone(),
 				client,
 				inherent_data_providers.clone(),
+				None,
 			)?;
 
 			Ok((import_queue, finality_proof_request_builder))