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Update Runtime Weights and Fee Calculation (#1064)

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* Update Runtime Weights and Fee Calculation

* bump spec

* Order of operations avoids saturation

* Update runtime/polkadot/src/constants.rs

* Use frame consts

* Update Cargo.lock

* Update Cargo.lock

* Update Cargo.lock

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
This commit is contained in:
Shawn Tabrizi
2020-05-05 09:41:41 +02:00
committed by GitHub
parent a7f76b4edd
commit f64c2a940f
8 changed files with 90 additions and 45 deletions
Download Patch File Download Diff File Expand all files Collapse all files
polkadot/runtime/westend/src/constants.rs
+25 -2
View File
@@ -46,6 +46,7 @@ pub mod fee {
use primitives::Balance;
use frame_support::weights::Weight;
use sp_runtime::traits::Convert;
use runtime_common::ExtrinsicBaseWeight;
/// The block saturation level. Fees will be updates based on this value.
pub const TARGET_BLOCK_FULLNESS: Perbill = Perbill::from_percent(25);
@@ -63,8 +64,30 @@ pub mod fee {
pub struct WeightToFee;
impl Convert<Weight, Balance> for WeightToFee {
fn convert(x: Weight) -> Balance {
// in Kusama a weight of 10_000 (smallest non-zero weight) is mapped to 1/10 CENT:
Balance::from(x).saturating_mul(super::currency::CENTS / (10 * 10_000))
// in Westend, extrinsic base weight (smallest non-zero weight) is mapped to 1/10 CENT:
Balance::from(x).saturating_mul(super::currency::CENTS / 10) / Balance::from(ExtrinsicBaseWeight::get())
}
}
}
#[cfg(test)]
mod tests {
use sp_runtime::traits::Convert;
use runtime_common::{MaximumBlockWeight, ExtrinsicBaseWeight};
use super::fee::WeightToFee;
use super::currency::{CENTS, DOLLARS};
#[test]
// This function tests that the fee for `MaximumBlockWeight` of weight is correct
fn full_block_fee_is_correct() {
// A full block should cost 16 DOLLARS
assert_eq!(WeightToFee::convert(MaximumBlockWeight::get()), 16 * DOLLARS)
}
#[test]
// This function tests that the fee for `ExtrinsicBaseWeight` of weight is correct
fn extrinsic_base_fee_is_correct() {
// `ExtrinsicBaseWeight` should cost 1/10 of a CENT
assert_eq!(WeightToFee::convert(ExtrinsicBaseWeight::get()), CENTS / 10)
}
}
polkadot/runtime/westend/src/lib.rs
+4 -12
View File
@@ -29,7 +29,7 @@ use primitives::{
use runtime_common::{attestations, parachains, registrar,
impls::{CurrencyToVoteHandler, TargetedFeeAdjustment, ToAuthor},
BlockHashCount, MaximumBlockWeight, AvailableBlockRatio, MaximumBlockLength,
BlockExecutionWeight, ExtrinsicBaseWeight
BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight,
};
use sp_runtime::{
create_runtime_str, generic, impl_opaque_keys,
@@ -55,7 +55,6 @@ use sp_staking::SessionIndex;
use frame_support::{
parameter_types, construct_runtime, debug,
traits::{KeyOwnerProofSystem, Randomness},
weights::RuntimeDbWeight,
};
use im_online::sr25519::AuthorityId as ImOnlineId;
use authority_discovery_primitives::AuthorityId as AuthorityDiscoveryId;
@@ -84,7 +83,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
spec_name: create_runtime_str!("westend"),
impl_name: create_runtime_str!("parity-westend"),
authoring_version: 2,
spec_version: 6,
spec_version: 7,
impl_version: 0,
apis: RUNTIME_API_VERSIONS,
transaction_version: 1,
@@ -132,13 +131,6 @@ parameter_types! {
pub const Version: RuntimeVersion = VERSION;
}
parameter_types! {
pub const DbWeight: RuntimeDbWeight = RuntimeDbWeight {
read: 60_000_000,
write: 200_000_000,
};
}
impl system::Trait for Runtime {
type Origin = Origin;
type Call = Call;
@@ -152,8 +144,8 @@ impl system::Trait for Runtime {
type Event = Event;
type BlockHashCount = BlockHashCount;
type MaximumBlockWeight = MaximumBlockWeight;
type DbWeight = DbWeight;
type BlockExecutionWeight = BlockExecutionWeight;
type DbWeight = RocksDbWeight;
type BlockExecutionWeight = BlockExecutionWeight;
type ExtrinsicBaseWeight = ExtrinsicBaseWeight;
type MaximumBlockLength = MaximumBlockLength;
type AvailableBlockRatio = AvailableBlockRatio;