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Mandatory dispatch class (#5515)

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* Mandatory dispatch class

* Tweaks

* Docs

* Fix test

* Update frame/support/src/weights.rs

Co-Authored-By: joe petrowski <25483142+joepetrowski@users.noreply.github.com>

* Introduce logic that was stated in PR.

* Use

* Docs.

* Fix test

* Fix merge

* Update frame/support/src/weights.rs

Co-Authored-By: Bastian Köcher <bkchr@users.noreply.github.com>

* Fix.

* Fix

Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>
Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
This commit is contained in:
Gavin Wood
2020-04-05 14:27:30 +02:00
committed by GitHub
parent 392571d78c
commit abd822692d
10 changed files with 132 additions and 25 deletions
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substrate/primitives/runtime/src/traits.rs
+27 -5
View File
@@ -39,6 +39,7 @@ pub use sp_arithmetic::traits::{
};
use sp_application_crypto::AppKey;
use impl_trait_for_tuples::impl_for_tuples;
use crate::DispatchResult;
/// A lazy value.
pub trait Lazy<T: ?Sized> {
@@ -627,7 +628,7 @@ pub trait Dispatchable {
/// Additional information that is returned by `dispatch`. Can be used to supply the caller
/// with information about a `Dispatchable` that is ownly known post dispatch.
type PostInfo: Eq + PartialEq + Clone + Copy + Encode + Decode + Printable;
/// Actually dispatch this call and result the result of it.
/// Actually dispatch this call and return the result of it.
fn dispatch(self, origin: Self::Origin) -> crate::DispatchResultWithInfo<Self::PostInfo>;
}
@@ -735,8 +736,27 @@ pub trait SignedExtension: Codec + Debug + Sync + Send + Clone + Eq + PartialEq
.map_err(Into::into)
}
/// Do any post-flight stuff for a transaction.
fn post_dispatch(_pre: Self::Pre, _info: Self::DispatchInfo, _len: usize) { }
/// Do any post-flight stuff for an extrinsic.
///
/// This gets given the `DispatchResult` `_result` from the extrinsic and can, if desired,
/// introduce a `TransactionValidityError`, causing the block to become invalid for including
/// it.
///
/// WARNING: It is dangerous to return an error here. To do so will fundamentally invalidate the
/// transaction and any block that it is included in, causing the block author to not be
/// compensated for their work in validating the transaction or producing the block so far.
///
/// It can only be used safely when you *know* that the extrinsic is one that can only be
/// introduced by the current block author; generally this implies that it is an inherent and
/// will come from either an offchain-worker or via `InherentData`.
fn post_dispatch(
_pre: Self::Pre,
_info: Self::DispatchInfo,
_len: usize,
_result: &DispatchResult,
) -> Result<(), TransactionValidityError> {
Ok(())
}
/// Returns the list of unique identifier for this signed extension.
///
@@ -804,8 +824,10 @@ impl<AccountId, Call, Info: Clone> SignedExtension for Tuple {
pre: Self::Pre,
info: Self::DispatchInfo,
len: usize,
) {
for_tuples!( #( Tuple::post_dispatch(pre.Tuple, info.clone(), len); )* )
result: &DispatchResult,
) -> Result<(), TransactionValidityError> {
for_tuples!( #( Tuple::post_dispatch(pre.Tuple, info.clone(), len, result)?; )* );
Ok(())
}
fn identifier() -> Vec<&'static str> {