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Estimate call fee (#9395)

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* Estimate call fee

* More fix

* Fix

* Update frame/support/src/traits/misc.rs

Co-authored-by: Zeke Mostov <32168567+emostov@users.noreply.github.com>

* try and fix fmt stuff

* fmt aain

Co-authored-by: Parity Benchmarking Bot <admin@parity.io>
Co-authored-by: Zeke Mostov <32168567+emostov@users.noreply.github.com>
This commit is contained in:
Kian Paimani
2021-07-23 10:53:32 +02:00
committed by GitHub
parent d18c6a5200
commit c2e246d372
8 changed files with 60 additions and 19 deletions
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substrate/frame/support/src/traits/misc.rs
+21 -3
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@@ -18,7 +18,6 @@
//! Smaller traits used in FRAME which don't need their own file.
use crate::dispatch::Parameter;
use sp_arithmetic::traits::AtLeast32Bit;
use sp_runtime::{traits::Block as BlockT, DispatchError};
/// Anything that can have a `::len()` method.
@@ -181,7 +180,7 @@ pub trait HandleLifetime<T> {
impl<T> HandleLifetime<T> for () {}
pub trait Time {
type Moment: AtLeast32Bit + Parameter + Default + Copy;
type Moment: sp_arithmetic::traits::AtLeast32Bit + Parameter + Default + Copy;
fn now() -> Self::Moment;
}
@@ -307,7 +306,7 @@ pub trait OffchainWorker<BlockNumber> {
fn offchain_worker(_n: BlockNumber) {}
}
/// Some amount of backing from a group. The precise defintion of what it means to "back" something
/// Some amount of backing from a group. The precise definition of what it means to "back" something
/// is left flexible.
pub struct Backing {
/// The number of members of the group that back some motion.
@@ -358,3 +357,22 @@ where
&self.function
}
}
/// Something that can estimate the fee of a (frame-based) call.
///
/// Typically, the same pallet that will charge transaction fees will implement this.
pub trait EstimateCallFee<Call, Balance> {
/// Estimate the fee of this call.
///
/// The dispatch info and the length is deduced from the call. The post info can optionally be
/// provided.
fn estimate_call_fee(call: &Call, post_info: crate::weights::PostDispatchInfo) -> Balance;
}
// Useful for building mocks.
#[cfg(feature = "std")]
impl<Call, Balance: From<u32>, const T: u32> EstimateCallFee<Call, Balance> for ConstU32<T> {
fn estimate_call_fee(_: &Call, _: crate::weights::PostDispatchInfo) -> Balance {
T.into()
}
}