Split off System random functions into a new Randomness module

Cargo.toml

@@ -95,6 +95,7 @@ members = [
 	"srml/membership",
 	"srml/metadata",
 	"srml/offences",
+	"srml/randomness-collective-flip",
 	"srml/scored-pool",
 	"srml/session",
 	"srml/staking",

node-template/runtime/Cargo.toml

@@ -20,6 +20,7 @@ babe-primitives = { package = "substrate-consensus-babe-primitives", path = "../
 executive = { package = "srml-executive", path = "../../srml/executive", default_features = false }
 indices = { package = "srml-indices", path = "../../srml/indices", default_features = false }
 grandpa = { package = "srml-grandpa", path = "../../srml/grandpa", default-features = false }
+randomness-collective-flip = { package = "srml-randomness-collective-flip", path = "../../srml/randomness-collective-flip", default_features = false }
 system = { package = "srml-system", path = "../../srml/system", default_features = false }
 timestamp = { package = "srml-timestamp", path = "../../srml/timestamp", default_features = false }
 sudo = { package = "srml-sudo", path = "../../srml/sudo", default_features = false }
@@ -46,6 +47,7 @@ std = [
 	"grandpa/std",
 	"primitives/std",
 	"sr-primitives/std",
+	"randomness-collective-flip/std",
 	"system/std",
 	"timestamp/std",
 	"sudo/std",

node-template/runtime/src/lib.rs

@@ -272,6 +272,7 @@ construct_runtime!(
 		Sudo: sudo,
 		// Used for the module template in `./template.rs`
 		TemplateModule: template::{Module, Call, Storage, Event<T>},
+		RandomnessCollectiveFlip: randomness_collective_flip::{Module, Call, Storage},
 	}
 );
 
@@ -340,7 +341,7 @@ impl_runtime_apis! {
 		}
 
 		fn random_seed() -> <Block as BlockT>::Hash {
-			System::random_seed()
+			RandomnessCollectiveFlip::random_seed()
 		}
 	}
 

node/runtime/Cargo.toml

@@ -40,6 +40,7 @@ im-online = { package = "srml-im-online", path = "../../srml/im-online", default
 indices = { package = "srml-indices", path = "../../srml/indices", default-features = false }
 membership = { package = "srml-membership", path = "../../srml/membership", default-features = false }
 offences = { package = "srml-offences", path = "../../srml/offences", default-features = false }
+randomness-collective-flip = { package = "srml-randomness-collective-flip", path = "../../srml/randomness-collective-flip", default-features = false }
 session = { package = "srml-session", path = "../../srml/session", default-features = false, features = ["historical"] }
 staking = { package = "srml-staking", path = "../../srml/staking", default-features = false }
 srml-staking-reward-curve = { path = "../../srml/staking/reward-curve"}
@@ -78,6 +79,7 @@ std = [
 	"offchain-primitives/std",
 	"offences/std",
 	"primitives/std",
+	"randomness-collective-flip/std",
 	"rstd/std",
 	"rustc-hex",
 	"safe-mix/std",

node/runtime/src/lib.rs

@@ -84,8 +84,8 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	// and set impl_version to equal spec_version. If only runtime
 	// implementation changes and behavior does not, then leave spec_version as
 	// is and increment impl_version.
-	spec_version: 172,
-	impl_version: 172,
+	spec_version: 173,
+	impl_version: 173,
 	apis: RUNTIME_API_VERSIONS,
 };
 
@@ -518,6 +518,7 @@ construct_runtime!(
 		ImOnline: im_online::{Module, Call, Storage, Event<T>, ValidateUnsigned, Config<T>},
 		AuthorityDiscovery: authority_discovery::{Module, Call, Config<T>},
 		Offences: offences::{Module, Call, Storage, Event},
+		RandomnessCollectiveFlip: randomness_collective_flip::{Module, Call, Storage},
 	}
 );
 
@@ -589,7 +590,7 @@ impl_runtime_apis! {
 		}
 
 		fn random_seed() -> <Block as BlockT>::Hash {
-			System::random_seed()
+			RandomnessCollectiveFlip::random_seed()
 		}
 	}
 

srml/contracts/Cargo.toml

@@ -17,6 +17,8 @@ rstd = { package = "sr-std", path = "../../core/sr-std", default-features = fals
 sandbox = { package = "sr-sandbox", path = "../../core/sr-sandbox", default-features = false }
 support = { package = "srml-support", path = "../support", default-features = false }
 system = { package = "srml-system", path = "../system", default-features = false }
+randomness-collective-flip = { package = "srml-randomness-collective-flip", path = "../randomness-collective-flip", default-features = false }
+timestamp = { package = "srml-timestamp", path = "../timestamp", default-features = false }
 
 [dev-dependencies]
 wabt = "0.9.2"
@@ -33,6 +35,7 @@ std = [
 	"codec/std",
 	"primitives/std",
 	"sr-primitives/std",
+	"randomness-collective-flip/std",
 	"runtime-io/std",
 	"rstd/std",
 	"sandbox/std",

srml/contracts/src/exec.rs

@@ -753,7 +753,7 @@ where
 	}
 
 	fn random(&self, subject: &[u8]) -> SeedOf<T> {
-		system::Module::<T>::random(subject)
+		randomness_collective_flip::Module::<T>::random(subject)
 	}
 
 	fn now(&self) -> &MomentOf<T> {

srml/executive/src/lib.rs

@@ -451,7 +451,7 @@ mod tests {
 				header: Header {
 					parent_hash: [69u8; 32].into(),
 					number: 1,
-					state_root: hex!("3e51b47b6cc8449eece93eee4b01f03b00a0ca7981c0b6c0447b6e0d50ca886d").into(),
+					state_root: hex!("a6378d7fdd31029d13718d54bdff10a370e75cc624aaf94a90e7e7d4a24e0bcc").into(),
 					extrinsics_root: hex!("03170a2e7597b7b7e3d84c05391d139a62b157e78786d8c082f29dcf4c111314").into(),
 					digest: Digest { logs: vec![], },
 				},

srml/randomness-collective-flip/Cargo.toml

@@ -0,0 +1,28 @@
+[package]
+name = "srml-randomness-collective-flip"
+version = "2.0.0"
+authors = ["Parity Technologies <[email protected]>"]
+edition = "2018"
+
+[dependencies]
+safe-mix = { version = "1.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "1.0.0", default-features = false, features = ["derive"] }
+sr-primitives = { path = "../../core/sr-primitives", default-features = false }
+support = { package = "srml-support", path = "../support", default-features = false }
+system = { package = "srml-system", path = "../system", default-features = false }
+rstd = { package = "sr-std", path = "../../core/sr-std", default-features = false }
+
+[dev-dependencies]
+primitives = { package = "substrate-primitives",  path = "../../core/primitives" }
+runtime-io = { package = "sr-io", path = "../../core/sr-io" }
+
+[features]
+default = ["std"]
+std = [
+	"safe-mix/std",
+	"system/std",
+	"codec/std",
+	"support/std",
+	"sr-primitives/std",
+	"rstd/std",
+]