Files
pezkuwi-subxt/substrate/frame/utility
Oliver Tale-Yazdi 64877492c5 [FRAME] Warn on unchecked weight witness (#1818)
Adds a warning to FRAME pallets when a function argument that starts
with `_` is used in the weight formula.
This is in most cases an error since the weight witness needs to be
checked.

Example:

```rust
#[pallet::call_index(0)]
#[pallet::weight(T::SystemWeightInfo::remark(_remark.len() as u32))]
pub fn remark(_origin: OriginFor<T>, _remark: Vec<u8>) -> DispatchResultWithPostInfo {
	Ok(().into())
}
```

Produces this warning:

```pre
warning: use of deprecated constant `pallet::warnings::UncheckedWeightWitness_0::_w`: 
                 It is deprecated to not check weight witness data.
                 Please instead ensure that all witness data for weight calculation is checked before usage.
         
                 For more info see:
                     <https://github.com/paritytech/polkadot-sdk/pull/1818>
   --> substrate/frame/system/src/lib.rs:424:40
    |
424 |         pub fn remark(_origin: OriginFor<T>, _remark: Vec<u8>) -> DispatchResultWithPostInfo {
    |                                              ^^^^^^^
    |
    = note: `#[warn(deprecated)]` on by default
```

Can be suppressed like this, since in this case it is legit:

```rust
#[pallet::call_index(0)]
#[pallet::weight(T::SystemWeightInfo::remark(remark.len() as u32))]
pub fn remark(_origin: OriginFor<T>, remark: Vec<u8>) -> DispatchResultWithPostInfo {
	let _ = remark; // We dont need to check the weight witness.
	Ok(().into())
}
```

Changes:
- Add warning on uncheded weight witness
- Respect `subkeys` limit in `System::kill_prefix`
- Fix HRMP pallet and other warnings
- Update`proc_macro_warning` dependency
- Delete random folder `substrate/src/src` 🙈 
- Adding Prdoc

---------

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>
2023-10-10 16:02:35 +02:00
..
2023-08-29 13:39:41 +02:00
2023-09-04 12:02:32 +03:00

Utility Module

A stateless module with helpers for dispatch management which does no re-authentication.

Overview

This module contains two basic pieces of functionality:

  • Batch dispatch: A stateless operation, allowing any origin to execute multiple calls in a single dispatch. This can be useful to amalgamate proposals, combining set_code with corresponding set_storages, for efficient multiple payouts with just a single signature verify, or in combination with one of the other two dispatch functionality.
  • Pseudonymal dispatch: A stateless operation, allowing a signed origin to execute a call from an alternative signed origin. Each account has 2 * 2**16 possible "pseudonyms" (alternative account IDs) and these can be stacked. This can be useful as a key management tool, where you need multiple distinct accounts (e.g. as controllers for many staking accounts), but where it's perfectly fine to have each of them controlled by the same underlying keypair. Derivative accounts are, for the purposes of proxy filtering considered exactly the same as the oigin and are thus hampered with the origin's filters.

Since proxy filters are respected in all dispatches of this module, it should never need to be filtered by any proxy.

Interface

Dispatchable Functions

For batch dispatch

  • batch - Dispatch multiple calls from the sender's origin.

For pseudonymal dispatch

  • as_derivative - Dispatch a call from a derivative signed origin.

License: Apache-2.0