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Make staking inflation curve configurable. (#3644)

Browse Source 
* Draft for new design of NPoS rewards

* finish code

* fix test

* add tests

* improve log test

* version bump

* Update srml/staking/reward-curve/Cargo.toml

Co-Authored-By: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

* u128 -> u64

* make conversion to smaller type safe

* Update core/sr-primitives/src/curve.rs

Co-Authored-By: Kian Paimani <5588131+kianenigma@users.noreply.github.com>
This commit is contained in:
thiolliere
2019-09-21 06:47:10 +02:00
committed by Gavin Wood
parent 68cda2fe79
commit c25d7386cf
15 changed files with 833 additions and 378 deletions
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substrate/node/runtime/src/lib.rs
+19 -4
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@@ -35,7 +35,10 @@ use client::{
block_builder::api::{self as block_builder_api, InherentData, CheckInherentsResult},
runtime_api as client_api, impl_runtime_apis
};
use sr_primitives::{ApplyResult, impl_opaque_keys, generic, create_runtime_str, key_types};
use sr_primitives::{
Permill, Perbill, ApplyResult, impl_opaque_keys, generic, create_runtime_str, key_types
};
use sr_primitives::curve::PiecewiseLinear;
use sr_primitives::transaction_validity::TransactionValidity;
use sr_primitives::weights::Weight;
use sr_primitives::traits::{
@@ -57,7 +60,6 @@ pub use sr_primitives::BuildStorage;
pub use timestamp::Call as TimestampCall;
pub use balances::Call as BalancesCall;
pub use contracts::Gas;
pub use sr_primitives::{Permill, Perbill};
pub use support::StorageValue;
pub use staking::StakerStatus;
@@ -82,8 +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: 159,
impl_version: 159,
spec_version: 160,
impl_version: 160,
apis: RUNTIME_API_VERSIONS,
};
@@ -232,9 +234,21 @@ impl session::historical::Trait for Runtime {
type FullIdentificationOf = staking::ExposureOf<Runtime>;
}
srml_staking_reward_curve::build! {
const REWARD_CURVE: PiecewiseLinear<'static> = curve!(
min_inflation: 0_025_000,
max_inflation: 0_100_000,
ideal_stake: 0_500_000,
falloff: 0_050_000,
max_piece_count: 40,
test_precision: 0_005_000,
);
}
parameter_types! {
pub const SessionsPerEra: sr_staking_primitives::SessionIndex = 6;
pub const BondingDuration: staking::EraIndex = 24 * 28;
pub const RewardCurve: &'static PiecewiseLinear<'static> = &REWARD_CURVE;
}
impl staking::Trait for Runtime {
@@ -248,6 +262,7 @@ impl staking::Trait for Runtime {
type SessionsPerEra = SessionsPerEra;
type BondingDuration = BondingDuration;
type SessionInterface = Self;
type RewardCurve = RewardCurve;
}
parameter_types! {