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  1. Apr 24, 2024
  3. Apr 17, 2024
  5. Apr 04, 2024
  7. Apr 02, 2024
    • Dastan's avatar
      migrations: prevent accidentally using unversioned migrations instead of... · e5427969
      Dastan authored 
      migrations: prevent accidentally using unversioned migrations instead of `VersionedMigration` (#3835)

closes #1324 

#### Problem
Currently, it is possible to accidentally use inner unversioned
migration instead of `VersionedMigration` since both implement
`OnRuntimeUpgrade`.

#### Solution

With this change, we make it clear that value of `Inner` is not intended
to be used directly. It is achieved by bounding `Inner` to new trait
`UncheckedOnRuntimeUpgrade`, which has the same interface (except
`unchecked_` prefix) as `OnRuntimeUpgrade`.

#### `try-runtime` functions

Since developers can implement `try-runtime` for `Inner` value in
`VersionedMigration` and have custom logic for it, I added the same
`try-runtime` functions to `UncheckedOnRuntimeUpgrade`. I looked for a
ways to not duplicate functions, but couldn't find anything that doesn't
significantly change the codebase. So I would appreciate If you have any
suggestions to improve this

cc @liamaharon

 @xlc 

polkadot address: 16FqwPZ8GRC5U5D4Fu7W33nA55ZXzXGWHwmbnE1eT6pxuqcT

---------

Co-authored-by: default avatarLiam Aharon <[email protected]>
      e5427969
    • Serban Iorga's avatar
      Align dependencies with `parity-bridges-common` (#3937) · 8e95a3e1
      Serban Iorga authored 
      Working towards migrating the `parity-bridges-common` repo inside
`polkadot-sdk`. This PR upgrades some dependencies in order to align
them with the versions used in `parity-bridges-common`

Related to
https://github.com/paritytech/parity-bridges-common/issues/2538
      8e95a3e1
    • Sam Johnson's avatar
      Update derive syn parse 0.2.0 (+ docify) (#3920) · 9a62de27
      Sam Johnson authored 
      

derive-syn-parse v0.2.0 came out recently which (finally) adds support
for syn 2x.

Upgrading to this will remove many of the places where syn 1x was still
compiling alongside syn 2x in the polkadot-sdk workspace.

This also upgrades `docify` to 0.2.8 which is the version that upgrades
derive-syn-pasre to 0.2.0.

Additionally, this consolidates the `docify` versions in the repo to all
use the latest, and in one case upgrades to the 0.2x syntax where 0.1.x
was still being used.

---------

Co-authored-by: default avatarLiam Aharon <[email protected]>
      9a62de27
  9. Mar 26, 2024
    • Dcompoze's avatar
      Fix spelling mistakes across the whole repository (#3808) · 002d9260
      Dcompoze authored 
      **Update:** Pushed additional changes based on the review comments.

**This pull request fixes various spelling mistakes in this
repository.**

Most of the changes are contained in the first **3** commits:

- `Fix spelling mistakes in comments and docs`

- `Fix spelling mistakes in test names`

- `Fix spelling mistakes in error messages, panic messages, logs and
tracing`

Other source code spelling mistakes are separated into individual
commits for easier reviewing:

- `Fix the spelling of 'authority'`

- `Fix the spelling of 'REASONABLE_HEADERS_IN_JUSTIFICATION_ANCESTRY'`

- `Fix the spelling of 'prev_enqueud_messages'`

- `Fix the spelling of 'endpoint'`

- `Fix the spelling of 'children'`

- `Fix the spelling of 'PenpalSiblingSovereignAccount'`

- `Fix the spelling of 'PenpalSudoAccount'`

- `Fix the spelling of 'insufficient'`

- `Fix the spelling of 'PalletXcmExtrinsicsBenchmark'`

- `Fix the spelling of 'subtracted'`

- `Fix the spelling of 'CandidatePendingAvailability'`

- `Fix the spelling of 'exclusive'`

- `Fix the spelling of 'until'`

- `Fix the spelling of 'discriminator'`

- `Fix the spelling of 'nonexistent'`

- `Fix the spelling of 'subsystem'`

- `Fix the spelling of 'indices'`

- `Fix the spelling of 'committed'`

- `Fix the spelling of 'topology'`

- `Fix the spelling of 'response'`

- `Fix the spelling of 'beneficiary'`

- `Fix the spelling of 'formatted'`

- `Fix the spelling of 'UNKNOWN_PROOF_REQUEST'`

- `Fix the spelling of 'succeeded'`

- `Fix the spelling of 'reopened'`

- `Fix the spelling of 'proposer'`

- `Fix the spelling of 'InstantiationNonce'`

- `Fix the spelling of 'depositor'`

- `Fix the spelling of 'expiration'`

- `Fix the spelling of 'phantom'`

- `Fix the spelling of 'AggregatedKeyValue'`

- `Fix the spelling of 'randomness'`

- `Fix the spelling of 'defendant'`

- `Fix the spelling of 'AquaticMammal'`

- `Fix the spelling of 'transactions'`

- `Fix the spelling of 'PassingTracingSubscriber'`

- `Fix the spelling of 'TxSignaturePayload'`

- `Fix the spelling of 'versioning'`

- `Fix the spelling of 'descendant'`

- `Fix the spelling of 'overridden'`

- `Fix the spelling of 'network'`

Let me know if this structure is adequate.

**Note:** The usage of the words `Merkle`, `Merkelize`, `Merklization`,
`Merkelization`, `Merkleization`, is somewhat inconsistent but I left it
as it is.

~~**Note:** In some places the term `Receival` is used to refer to
message reception, IMO `Reception` is the correct word here, but I left
it as it is.~~

~~**Note:** In some places the term `Overlayed` is used instead of the
more acceptable version `Overlaid` but I also left it as it is.~~

~~**Note:** In some places the term `Applyable` is used instead of the
correct version `Applicable` but I also left it as it is.~~

**Note:** Some usage of British vs American english e.g. `judgement` vs
`judgment`, `initialise` vs `initialize`, `optimise` vs `optimize` etc.
are both present in different places, but I suppose that's
understandable given the number of contributors.

~~**Note:** There is a spelling mistake in `.github/CODEOWNERS` but it
triggers errors in CI when I make changes to it, so I left it as it
is.~~
      002d9260
  11. Mar 17, 2024
  13. Mar 15, 2024
  15. Mar 13, 2024
  17. Mar 05, 2024
    • Kian Paimani's avatar
      Repot all templates into a single directory (#3460) · 4c810609
      Kian Paimani authored 
      The first step towards
https://github.com/paritytech/polkadot-sdk/issues/3155

Brings all templates under the following structure

```
templates
|   parachain
|   |   polkadot-launch
|   |   runtime              --> parachain-template-runtime
|   |   pallets              --> pallet-parachain-template
|   |   node                 --> parachain-template-node
|   minimal
|   |   runtime              --> minimal-template-runtime
|   |   pallets              --> pallet-minimal-template
|   |   node                 --> minimal-template-node
|   solochain
|   |   runtime              --> solochain-template-runtime
|   |   pallets              --> pallet-template (the naming is not consistent here)
|   |   node                 --> solochain-template-node
```

The only note-worthy changes in this PR are: 

- More `Cargo.toml` fields are forwarded to use the one from the
workspace.
- parachain template now has weights and benchmarks
- adds a shell pallet to the minimal template
- remove a few unused deps 


A list of possible follow-ups: 

- [ ] Unify READMEs, create a parent README for all
- [ ] remove references to `docs.substrate.io` in templates
- [ ] make all templates use `#[derive_impl]`
- [ ] update and unify all licenses
- [ ] Remove polkadot launch, use
https://github.com/paritytech/polkadot-sdk/blob/35349df993ea2e7c4769914ef5d199e787b23d4c/cumulus/zombienet/examples/small_network.toml
instead.
      4c810609
  19. Mar 04, 2024
    • Gavin Wood's avatar
      FRAME: Create `TransactionExtension` as a replacement for `SignedExtension` (#2280) · fd5f9292
      Gavin Wood authored 
      Closes #2160

First part of [Extrinsic
Horizon](https://github.com/paritytech/polkadot-sdk/issues/2415

)

Introduces a new trait `TransactionExtension` to replace
`SignedExtension`. Introduce the idea of transactions which obey the
runtime's extensions and have according Extension data (né Extra data)
yet do not have hard-coded signatures.

Deprecate the terminology of "Unsigned" when used for
transactions/extrinsics owing to there now being "proper" unsigned
transactions which obey the extension framework and "old-style" unsigned
which do not. Instead we have __*General*__ for the former and
__*Bare*__ for the latter. (Ultimately, the latter will be phased out as
a type of transaction, and Bare will only be used for Inherents.)

Types of extrinsic are now therefore:
- Bare (no hardcoded signature, no Extra data; used to be known as
"Unsigned")
- Bare transactions (deprecated): Gossiped, validated with
`ValidateUnsigned` (deprecated) and the `_bare_compat` bits of
`TransactionExtension` (deprecated).
  - Inherents: Not gossiped, validated with `ProvideInherent`.
- Extended (Extra data): Gossiped, validated via `TransactionExtension`.
  - Signed transactions (with a hardcoded signature).
  - General transactions (without a hardcoded signature).

`TransactionExtension` differs from `SignedExtension` because:
- A signature on the underlying transaction may validly not be present.
- It may alter the origin during validation.
- `pre_dispatch` is renamed to `prepare` and need not contain the checks
present in `validate`.
- `validate` and `prepare` is passed an `Origin` rather than a
`AccountId`.
- `validate` may pass arbitrary information into `prepare` via a new
user-specifiable type `Val`.
- `AdditionalSigned`/`additional_signed` is renamed to
`Implicit`/`implicit`. It is encoded *for the entire transaction* and
passed in to each extension as a new argument to `validate`. This
facilitates the ability of extensions to acts as underlying crypto.

There is a new `DispatchTransaction` trait which contains only default
function impls and is impl'ed for any `TransactionExtension` impler. It
provides several utility functions which reduce some of the tedium from
using `TransactionExtension` (indeed, none of its regular functions
should now need to be called directly).

Three transaction version discriminator ("versions") are now
permissible:
- 0b000000100: Bare (used to be called "Unsigned"): contains Signature
or Extra (extension data). After bare transactions are no longer
supported, this will strictly identify an Inherents only.
- 0b100000100: Old-school "Signed" Transaction: contains Signature and
Extra (extension data).
- 0b010000100: New-school "General" Transaction: contains Extra
(extension data), but no Signature.

For the New-school General Transaction, it becomes trivial for authors
to publish extensions to the mechanism for authorizing an Origin, e.g.
through new kinds of key-signing schemes, ZK proofs, pallet state,
mutations over pre-authenticated origins or any combination of the
above.

## Code Migration

### NOW: Getting it to build

Wrap your `SignedExtension`s in `AsTransactionExtension`. This should be
accompanied by renaming your aggregate type in line with the new
terminology. E.g. Before:

```rust
/// The SignedExtension to the basic transaction logic.
pub type SignedExtra = (
	/* snip */
	MySpecialSignedExtension,
);
/// Unchecked extrinsic type as expected by this runtime.
pub type UncheckedExtrinsic =
	generic::UncheckedExtrinsic<Address, RuntimeCall, Signature, SignedExtra>;
```

After:

```rust
/// The extension to the basic transaction logic.
pub type TxExtension = (
	/* snip */
	AsTransactionExtension<MySpecialSignedExtension>,
);
/// Unchecked extrinsic type as expected by this runtime.
pub type UncheckedExtrinsic =
	generic::UncheckedExtrinsic<Address, RuntimeCall, Signature, TxExtension>;
```

You'll also need to alter any transaction building logic to add a
`.into()` to make the conversion happen. E.g. Before:

```rust
fn construct_extrinsic(
		/* snip */
) -> UncheckedExtrinsic {
	let extra: SignedExtra = (
		/* snip */
		MySpecialSignedExtension::new(/* snip */),
	);
	let payload = SignedPayload::new(call.clone(), extra.clone()).unwrap();
	let signature = payload.using_encoded(|e| sender.sign(e));
	UncheckedExtrinsic::new_signed(
		/* snip */
		Signature::Sr25519(signature),
		extra,
	)
}
```

After:

```rust
fn construct_extrinsic(
		/* snip */
) -> UncheckedExtrinsic {
	let tx_ext: TxExtension = (
		/* snip */
		MySpecialSignedExtension::new(/* snip */).into(),
	);
	let payload = SignedPayload::new(call.clone(), tx_ext.clone()).unwrap();
	let signature = payload.using_encoded(|e| sender.sign(e));
	UncheckedExtrinsic::new_signed(
		/* snip */
		Signature::Sr25519(signature),
		tx_ext,
	)
}
```

### SOON: Migrating to `TransactionExtension`

Most `SignedExtension`s can be trivially converted to become a
`TransactionExtension`. There are a few things to know.

- Instead of a single trait like `SignedExtension`, you should now
implement two traits individually: `TransactionExtensionBase` and
`TransactionExtension`.
- Weights are now a thing and must be provided via the new function `fn
weight`.

#### `TransactionExtensionBase`

This trait takes care of anything which is not dependent on types
specific to your runtime, most notably `Call`.

- `AdditionalSigned`/`additional_signed` is renamed to
`Implicit`/`implicit`.
- Weight must be returned by implementing the `weight` function. If your
extension is associated with a pallet, you'll probably want to do this
via the pallet's existing benchmarking infrastructure.

#### `TransactionExtension`

Generally:
- `pre_dispatch` is now `prepare` and you *should not reexecute the
`validate` functionality in there*!
- You don't get an account ID any more; you get an origin instead. If
you need to presume an account ID, then you can use the trait function
`AsSystemOriginSigner::as_system_origin_signer`.
- You get an additional ticket, similar to `Pre`, called `Val`. This
defines data which is passed from `validate` into `prepare`. This is
important since you should not be duplicating logic from `validate` to
`prepare`, you need a way of passing your working from the former into
the latter. This is it.
- This trait takes two type parameters: `Call` and `Context`. `Call` is
the runtime call type which used to be an associated type; you can just
move it to become a type parameter for your trait impl. `Context` is not
currently used and you can safely implement over it as an unbounded
type.
- There's no `AccountId` associated type any more. Just remove it.

Regarding `validate`:
- You get three new parameters in `validate`; all can be ignored when
migrating from `SignedExtension`.
- `validate` returns a tuple on success; the second item in the tuple is
the new ticket type `Self::Val` which gets passed in to `prepare`. If
you use any information extracted during `validate` (off-chain and
on-chain, non-mutating) in `prepare` (on-chain, mutating) then you can
pass it through with this. For the tuple's last item, just return the
`origin` argument.

Regarding `prepare`:
- This is renamed from `pre_dispatch`, but there is one change:
- FUNCTIONALITY TO VALIDATE THE TRANSACTION NEED NOT BE DUPLICATED FROM
`validate`!!
- (This is different to `SignedExtension` which was required to run the
same checks in `pre_dispatch` as in `validate`.)

Regarding `post_dispatch`:
- Since there are no unsigned transactions handled by
`TransactionExtension`, `Pre` is always defined, so the first parameter
is `Self::Pre` rather than `Option<Self::Pre>`.

If you make use of `SignedExtension::validate_unsigned` or
`SignedExtension::pre_dispatch_unsigned`, then:
- Just use the regular versions of these functions instead.
- Have your logic execute in the case that the `origin` is `None`.
- Ensure your transaction creation logic creates a General Transaction
rather than a Bare Transaction; this means having to include all
`TransactionExtension`s' data.
- `ValidateUnsigned` can still be used (for now) if you need to be able
to construct transactions which contain none of the extension data,
however these will be phased out in stage 2 of the Transactions Horizon,
so you should consider moving to an extension-centric design.

## TODO

- [x] Introduce `CheckSignature` impl of `TransactionExtension` to
ensure it's possible to have crypto be done wholly in a
`TransactionExtension`.
- [x] Deprecate `SignedExtension` and move all uses in codebase to
`TransactionExtension`.
  - [x] `ChargeTransactionPayment`
  - [x] `DummyExtension`
  - [x] `ChargeAssetTxPayment` (asset-tx-payment)
  - [x] `ChargeAssetTxPayment` (asset-conversion-tx-payment)
  - [x] `CheckWeight`
  - [x] `CheckTxVersion`
  - [x] `CheckSpecVersion`
  - [x] `CheckNonce`
  - [x] `CheckNonZeroSender`
  - [x] `CheckMortality`
  - [x] `CheckGenesis`
  - [x] `CheckOnlySudoAccount`
  - [x] `WatchDummy`
  - [x] `PrevalidateAttests`
  - [x] `GenericSignedExtension`
  - [x] `SignedExtension` (chain-polkadot-bulletin)
  - [x] `RefundSignedExtensionAdapter`
- [x] Implement `fn weight` across the board.
- [ ] Go through all pre-existing extensions which assume an account
signer and explicitly handle the possibility of another kind of origin.
- [x] `CheckNonce` should probably succeed in the case of a non-account
origin.
- [x] `CheckNonZeroSender` should succeed in the case of a non-account
origin.
- [x] `ChargeTransactionPayment` and family should fail in the case of a
non-account origin.
  - [ ] 
- [x] Fix any broken tests.

---------

Signed-off-by: default avatargeorgepisaltu <[email protected]>
Signed-off-by: default avatarAlexandru Vasile <[email protected]>
Signed-off-by: default avatardependabot[bot] <[email protected]>
Signed-off-by: default avatarOliver Tale-Yazdi <[email protected]>
Signed-off-by: default avatarAlexandru Gheorghe <[email protected]>
Signed-off-by: default avatarAndrei Sandu <[email protected]>
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Co-authored-by: default avatarBastian Köcher <[email protected]>
Co-authored-by: default avatarMaciej <[email protected]>
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Co-authored-by: default avatarMarcin S. <[email protected]>
Co-authored-by: default avatarTsvetomir Dimitrov <[email protected]>
Co-authored-by: default avatarJavier Bullrich <[email protected]>
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Co-authored-by: Vladimir Istyufeev's avatarVladimir Istyufeev <[email protected]>
Co-authored-by: default avatarRoss Bulat <[email protected]>
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      fd5f9292
  21. Mar 02, 2024
    • gupnik's avatar
      Remove `as frame_system::DefaultConfig` from the required syntax in `derive_impl` (#3505) · cdc8d197
      gupnik authored 
      Step in https://github.com/paritytech/polkadot-sdk/issues/171

This PR removes the need to specify `as [disambiguation_path]` for cases
where the trait definition resides within the same scope as default impl
path.

For example, in the following macro invocation
```rust
#[derive_impl(frame_system::config_preludes::TestDefaultConfig as frame_system::DefaultConfig)]
impl frame_system::Config for Runtime {
   ...
}
```
the trait `DefaultConfig` lies within the `frame_system` scope and
`TestDefaultConfig` impls the `DefaultConfig` trait. Using this
information, we can compute the disambiguation path internally, thus
removing the need of an explicit specification.

In cases where the trait lies outside this scope, we would still need to
specify it explicitly, but this should take care of most (if not all)
uses of `derive_impl` within FRAME's context.
      cdc8d197
  23. Feb 28, 2024
  25. Feb 21, 2024
  27. Feb 12, 2024
  29. Feb 08, 2024
    • Oliver Tale-Yazdi's avatar
      [FRAME] Parameters pallet (#2061) · e53ebd8c
      Oliver Tale-Yazdi authored 
      Closes #169  

Fork of the `orml-parameters-pallet` as introduced by
https://github.com/open-web3-stack/open-runtime-module-library/pull/927


(cc @xlc)
It greatly changes how the macros work, but keeps the pallet the same.
The downside of my code is now that it does only support constant keys
in the form of types, not value-bearing keys.
I think this is an acceptable trade off, give that it can be used by
*any* pallet without any changes.

The pallet allows to dynamically set parameters that can be used in
pallet configs while also restricting the updating on a per-key basis.
The rust-docs contains a complete example.

Changes:
- Add `parameters-pallet`
- Use in the kitchensink as demonstration
- Add experimental attribute to define dynamic params in the runtime.
- Adding a bunch of traits to `frame_support::traits::dynamic_params`
that can be re-used by the ORML macros

## Example

First to define the parameters in the runtime file. The syntax is very
explicit about the codec index and errors if there is no.
```rust
#[dynamic_params(RuntimeParameters, pallet_parameters::Parameters::<Runtime>))]
pub mod dynamic_params {
	use super::*;

	#[dynamic_pallet_params]
	#[codec(index = 0)]
	pub mod storage {
		/// Configures the base deposit of storing some data.
		#[codec(index = 0)]
		pub static BaseDeposit: Balance = 1 * DOLLARS;

		/// Configures the per-byte deposit of storing some data.
		#[codec(index = 1)]
		pub static ByteDeposit: Balance = 1 * CENTS;
	}

	#[dynamic_pallet_params]
	#[codec(index = 1)]
	pub mod contracts {
		#[codec(index = 0)]
		pub static DepositPerItem: Balance = deposit(1, 0);

		#[codec(index = 1)]
		pub static DepositPerByte: Balance = deposit(0, 1);
	}
}
```

Then the pallet is configured with the aggregate:  
```rust
impl pallet_parameters::Config for Runtime {
	type AggregratedKeyValue = RuntimeParameters;
	type AdminOrigin = EnsureRootWithSuccess<AccountId, ConstBool<true>>;
	...
}
```

And then the parameters can be used in a pallet config:
```rust
impl pallet_preimage::Config for Runtime {
	type DepositBase = dynamic_params::storage::DepositBase;
}
```

A custom origin an be defined like this:  
```rust
pub struct DynamicParametersManagerOrigin;

impl EnsureOriginWithArg<RuntimeOrigin, RuntimeParametersKey> for DynamicParametersManagerOrigin {
	type Success = ();

	fn try_origin(
		origin: RuntimeOrigin,
		key: &RuntimeParametersKey,
	) -> Result<Self::Success, RuntimeOrigin> {
		match key {
			RuntimeParametersKey::Storage(_) => {
				frame_system::ensure_root(origin.clone()).map_err(|_| origin)?;
				return Ok(())
			},
			RuntimeParametersKey::Contract(_) => {
				frame_system::ensure_root(origin.clone()).map_err(|_| origin)?;
				return Ok(())
			},
		}
	}

	#[cfg(feature = "runtime-benchmarks")]
	fn try_successful_origin(_key: &RuntimeParametersKey) -> Result<RuntimeOrigin, ()> {
		Ok(RuntimeOrigin::Root)
	}
}
```

---------

Signed-off-by: default avatarOliver Tale-Yazdi <[email protected]>
Co-authored-by: default avatarNikhil Gupta <[email protected]>
Co-authored-by: default avatarKian Paimani <[email protected]>
Co-authored-by: command-bot <>
      e53ebd8c
  31. Feb 06, 2024
    • Squirrel's avatar
      sp-std -> core (#3199) · bc2e5e1f
      Squirrel authored 
      First in a series of PRs that reduces our use of sp-std with a view to
deprecating it.

This is just looking at /substrate and moving some of the references
from `sp-std` to `core`.
These particular changes should be uncontroversial.

Where macros are used `::core` should be used to remove any ambiguity.

part of https://github.com/paritytech/polkadot-sdk/issues/2101
      bc2e5e1f
  33. Jan 31, 2024
    • Branislav Kontur's avatar
      [frame] `#[pallet::composite_enum]` improved variant count handling + removed... · bb8ddc46
      Branislav Kontur authored 
      [frame] `#[pallet::composite_enum]` improved variant count handling + removed `pallet_balances`'s `MaxHolds` config (#2657)

I started this investigation/issue based on @liamaharon question
[here](https://github.com/paritytech/polkadot-sdk/pull/1801#discussion_r1410452499).

## Problem

The `pallet_balances` integrity test should correctly detect that the
runtime has correct distinct `HoldReasons` variant count. I assume the
same situation exists for RuntimeFreezeReason.

It is not a critical problem, if we set `MaxHolds` with a sufficiently
large value, everything should be ok. However, in this case, the
integrity_test check becomes less useful.

**Situation for "any" runtime:**
- `HoldReason` enums from different pallets:
```rust
        /// from pallet_nis
        #[pallet::composite_enum]
	pub enum HoldReason {
		NftReceipt,
	}

        /// from pallet_preimage
        #[pallet::composite_enum]
	pub enum HoldReason {
		Preimage,
	}

        // from pallet_state-trie-migration
        #[pallet::composite_enum]
	pub enum HoldReason {
		SlashForContinueMigrate,
		SlashForMigrateCustomTop,
		SlashForMigrateCustomChild,
	}
```

- generated `RuntimeHoldReason` enum looks like:
```rust
pub enum RuntimeHoldReason {

    #[codec(index = 32u8)]
    Preimage(pallet_preimage::HoldReason),

    #[codec(index = 38u8)]
    Nis(pallet_nis::HoldReason),

    #[codec(index = 42u8)]
    StateTrieMigration(pallet_state_trie_migration::HoldReason),
}
```

- composite enum `RuntimeHoldReason` variant count is detected as `3`
- we set `type MaxHolds = ConstU32<3>`
- `pallet_balances::integrity_test` is ok with `3`(at least 3)

However, the real problem can occur in a live runtime where some
functionality might stop working. This is due to a total of 5 distinct
hold reasons (for pallets with multi-instance support, it is even more),
and not all of them can be used because of an incorrect `MaxHolds`,
which is deemed acceptable according to the `integrity_test`:
  ```
  // pseudo-code - if we try to call all of these:

T::Currency::hold(&pallet_nis::HoldReason::NftReceipt.into(),
&nft_owner, deposit)?;
T::Currency::hold(&pallet_preimage::HoldReason::Preimage.into(),
&nft_owner, deposit)?;

T::Currency::hold(&pallet_state_trie_migration::HoldReason::SlashForContinueMigrate.into(),
&nft_owner, deposit)?;

  // With `type MaxHolds = ConstU32<3>` these two will fail

T::Currency::hold(&pallet_state_trie_migration::HoldReason::SlashForMigrateCustomTop.into(),
&nft_owner, deposit)?;

T::Currency::hold(&pallet_state_trie_migration::HoldReason::SlashForMigrateCustomChild.into(),
&nft_owner, deposit)?;
  ```  


## Solutions

A macro `#[pallet::*]` expansion is extended of `VariantCount`
implementation for the `#[pallet::composite_enum]` enum type. This
expansion generates the `VariantCount` implementation for pallets'
`HoldReason`, `FreezeReason`, `LockId`, and `SlashReason`. Enum variants
must be plain enum values without fields to ensure a deterministic
count.

The composite runtime enum, `RuntimeHoldReason` and
`RuntimeFreezeReason`, now sets `VariantCount::VARIANT_COUNT` as the sum
of pallets' enum `VariantCount::VARIANT_COUNT`:
```rust
#[frame_support::pallet(dev_mode)]
mod module_single_instance {

	#[pallet::composite_enum]
	pub enum HoldReason {
		ModuleSingleInstanceReason1,
		ModuleSingleInstanceReason2,
	}
...
}

#[frame_support::pallet(dev_mode)]
mod module_multi_instance {

	#[pallet::composite_enum]
	pub enum HoldReason<I: 'static = ()> {
		ModuleMultiInstanceReason1,
		ModuleMultiInstanceReason2,
		ModuleMultiInstanceReason3,
	}
...
}


impl self::sp_api_hidden_includes_construct_runtime::hidden_include::traits::VariantCount
    for RuntimeHoldReason
{
    const VARIANT_COUNT: u32 = 0
        + module_single_instance::HoldReason::VARIANT_COUNT
        + module_multi_instance::HoldReason::<module_multi_instance::Instance1>::VARIANT_COUNT
        + module_multi_instance::HoldReason::<module_multi_instance::Instance2>::VARIANT_COUNT
        + module_multi_instance::HoldReason::<module_multi_instance::Instance3>::VARIANT_COUNT;
}
```

In addition, `MaxHolds` is removed (as suggested
[here](https://github.com/paritytech/polkadot-sdk/pull/2657#discussion_r1443324573))
from `pallet_balances`, and its `Holds` are now bounded to
`RuntimeHoldReason::VARIANT_COUNT`. Therefore, there is no need to let
the runtime specify `MaxHolds`.


## For reviewers

Relevant changes can be found here:
- `substrate/frame/support/procedural/src/lib.rs` 
-  `substrate/frame/support/procedural/src/pallet/parse/composite.rs`
-  `substrate/frame/support/procedural/src/pallet/expand/composite.rs`
-
`substrate/frame/support/procedural/src/construct_runtime/expand/composite_helper.rs`
-
`substrate/frame/support/procedural/src/construct_runtime/expand/hold_reason.rs`
-
`substrate/frame/support/procedural/src/construct_runtime/expand/freeze_reason.rs`
- `substrate/frame/support/src/traits/misc.rs`

And the rest of the files is just about removed `MaxHolds` from
`pallet_balances`

## Next steps

Do the same for `MaxFreezes`
https://github.com/paritytech/polkadot-sdk/issues/2997

.

---------

Co-authored-by: command-bot <>
Co-authored-by: default avatarBastian Köcher <[email protected]>
Co-authored-by: default avatarDónal Murray <[email protected]>
Co-authored-by: default avatargupnik <[email protected]>
      bb8ddc46
  35. Jan 26, 2024
  37. Jan 22, 2024
  39. Dec 15, 2023
  41. Dec 13, 2023
  43. Dec 08, 2023
    • Sam Johnson's avatar
      Tasks: general system for recognizing and executing service work (#1343) · ac3f14d2
      Sam Johnson authored 
      `polkadot-sdk` version of original tasks PR located here:
https://github.com/paritytech/substrate/pull/14329

Fixes #206

## Status
- [x] Generic `Task` trait
- [x] `RuntimeTask` aggregated enum, compatible with
`construct_runtime!`
- [x] Casting between `Task` and `RuntimeTask` without needing `dyn` or
`Box`
- [x] Tasks Example pallet
- [x] Runtime tests for Tasks example pallet
- [x] Parsing for task-related macros
- [x] Retrofit parsing to make macros optional
- [x] Expansion for task-related macros
- [x] Adds support for args in tasks
- [x] Retrofit tasks example pallet to use macros instead of manual
syntax
- [x] Weights
- [x] Cleanup
- [x] UI tests
- [x] Docs

## Target Syntax
Adapted from
https://github.com/paritytech/polkadot-sdk/issues/206#issue-1865172283



```rust
// NOTE: this enum is optional and is auto-generated by the other macros if not present
#[pallet::task]
pub enum Task<T: Config> {
    AddNumberIntoTotal {
        i: u32,
    }
}

/// Some running total.
#[pallet::storage]
pub(super) type Total<T: Config<I>, I: 'static = ()> =
StorageValue<_, (u32, u32), ValueQuery>;

/// Numbers to be added into the total.
#[pallet::storage]
pub(super) type Numbers<T: Config<I>, I: 'static = ()> =
StorageMap<_, Twox64Concat, u32, u32, OptionQuery>;

#[pallet::tasks_experimental]
impl<T: Config<I>, I: 'static> Pallet<T, I> {
	/// Add a pair of numbers into the totals and remove them.
	#[pallet::task_list(Numbers::<T, I>::iter_keys())]
	#[pallet::task_condition(|i| Numbers::<T, I>::contains_key(i))]
	#[pallet::task_index(0)]
	pub fn add_number_into_total(i: u32) -> DispatchResult {
		let v = Numbers::<T, I>::take(i).ok_or(Error::<T, I>::NotFound)?;
		Total::<T, I>::mutate(|(total_keys, total_values)| {
			*total_keys += i;
			*total_values += v;
		});
		Ok(())
	}
}
```

---------

Co-authored-by: default avatarNikhil Gupta <[email protected]>
Co-authored-by: default avatarkianenigma <[email protected]>
Co-authored-by: Nikhil Gupta <>
Co-authored-by: default avatarGavin Wood <[email protected]>
Co-authored-by: default avatarOliver Tale-Yazdi <[email protected]>
Co-authored-by: default avatargupnik <[email protected]>
      ac3f14d2
  45. Dec 01, 2023
  47. Nov 30, 2023
  49. Nov 28, 2023
  51. Nov 13, 2023
    • gupnik's avatar
      Adds syntax for marking calls feeless (#1926) · 60c77a2e
      gupnik authored 
      Fixes https://github.com/paritytech/polkadot-sdk/issues/1725



This PR adds the following changes:
1. An attribute `pallet::feeless_if` that can be optionally attached to
a call like so:
```rust
#[pallet::feeless_if(|_origin: &OriginFor<T>, something: &u32| -> bool {
	*something == 0
})]
pub fn do_something(origin: OriginFor<T>, something: u32) -> DispatchResult {
     ....
}
```
The closure passed accepts references to arguments as specified in the
call fn. It returns a boolean that denotes the conditions required for
this call to be "feeless".

2. A signed extension `SkipCheckIfFeeless<T: SignedExtension>` that
wraps a transaction payment processor such as
`pallet_transaction_payment::ChargeTransactionPayment`. It checks for
all calls annotated with `pallet::feeless_if` to see if the conditions
are met. If so, the wrapped signed extension is not called, essentially
making the call feeless.

In order to use this, you can simply replace your existing signed
extension that manages transaction payment like so:
```diff
- pallet_transaction_payment::ChargeTransactionPayment<Runtime>,
+ pallet_skip_feeless_payment::SkipCheckIfFeeless<
+	Runtime,
+	pallet_transaction_payment::ChargeTransactionPayment<Runtime>,
+ >,
```

### Todo
- [x] Tests
- [x] Docs
- [x] Prdoc

---------

Co-authored-by: Nikhil Gupta <>
Co-authored-by: default avatarOliver Tale-Yazdi <[email protected]>
Co-authored-by: default avatarFrancisco Aguirre <[email protected]>
Co-authored-by: default avatarLiam Aharon <[email protected]>
      60c77a2e
  53. Nov 09, 2023
  55. Oct 31, 2023
  57. Oct 27, 2023
    • juangirini's avatar
      feat: FRAME umbrella crate. (#1337) · 43415ef5
      juangirini authored 
      ### Original PR https://github.com/paritytech/substrate/pull/14137

This PR brings in the first version of the "_`frame` umbrella crate_".
This crate is intended to serve two purposes:

1. documentation
2. easier development with frame. Ideally, we want most users to be able
to build a frame-based pallet and runtime using just `frame` (plus
`scale-codec` and `scale-info`).

The crate is not finalized and is not yet intended for external use.
Therefore, the version is set to `0.0.1-dev`, this PR is `silent`, and
the entire crate is hidden behind the `experimental` flag. The main
intention in merging it early on is to be able to iterate on it in the
rest of
[`developer-hub`](https://github.com/paritytech/polkadot-sdk-docs/)
efforts.

The public API of the `frame` crate is at the moment as follows: 

```
pub mod frame
pub use frame::log
pub use frame::pallet
pub mod frame::arithmetic
pub use frame::arithmetic::<<sp_arithmetic::*>>
pub use frame::arithmetic::<<sp_arithmetic::traits::*>>
pub mod frame::deps
pub use frame::deps::codec
pub use frame::deps::frame_executive
pub use frame::deps::frame_support
pub use frame::deps::frame_system
pub use frame::deps::scale_info
pub use frame::deps::sp_api
pub use frame::deps::sp_arithmetic
pub use frame::deps::sp_block_builder
pub use frame::deps::sp_consensus_aura
pub use frame::deps::sp_consensus_grandpa
pub use frame::deps::sp_core
pub use frame::deps::sp_inherents
pub use frame::deps::sp_io
pub use frame::deps::sp_offchain
pub use frame::deps::sp_runtime
pub use frame::deps::sp_std
pub use frame::deps::sp_version
pub mod frame::derive
pub use frame::derive::CloneNoBound
pub use frame::derive::Debug
pub use frame::derive::Debug
pub use frame::derive::DebugNoBound
pub use frame::derive::Decode
pub use frame::derive::Decode
pub use frame::derive::DefaultNoBound
pub use frame::derive::Encode
pub use frame::derive::Encode
pub use frame::derive::EqNoBound
pub use frame::derive::PartialEqNoBound
pub use frame::derive::RuntimeDebug
pub use frame::derive::RuntimeDebugNoBound
pub use frame::derive::TypeInfo
pub use frame::derive::TypeInfo
pub mod frame::prelude
pub use frame::prelude::<<frame_support::pallet_prelude::*>>
pub use frame::prelude::<<frame_system::pallet_prelude::*>>
pub use frame::prelude::<<sp_std::prelude::*>>
pub use frame::prelude::CloneNoBound
pub use frame::prelude::Debug
pub use frame::prelude::Debug
pub use frame::prelude::DebugNoBound
pub use frame::prelude::Decode
pub use frame::prelude::Decode
pub use frame::prelude::DefaultNoBound
pub use frame::prelude::Encode
pub use frame::prelude::Encode
pub use frame::prelude::EqNoBound
pub use frame::prelude::PartialEqNoBound
pub use frame::prelude::RuntimeDebug
pub use frame::prelude::RuntimeDebugNoBound
pub use frame::prelude::TypeInfo
pub use frame::prelude::TypeInfo
pub use frame::prelude::frame_system
pub mod frame::primitives
pub use frame::primitives::BlakeTwo256
pub use frame::primitives::H160
pub use frame::primitives::H256
pub use frame::primitives::H512
pub use frame::primitives::Hash
pub use frame::primitives::Keccak256
pub use frame::primitives::U256
pub use frame::primitives::U512
pub mod frame::runtime
pub mod frame::runtime::apis
pub use frame::runtime::apis::<<frame_system_rpc_runtime_api::*>>
pub use frame::runtime::apis::<<sp_api::*>>
pub use frame::runtime::apis::<<sp_block_builder::*>>
pub use frame::runtime::apis::<<sp_consensus_aura::*>>
pub use frame::runtime::apis::<<sp_consensus_grandpa::*>>
pub use frame::runtime::apis::<<sp_offchain::*>>
pub use frame::runtime::apis::<<sp_session::runtime_api::*>>
pub use frame::runtime::apis::<<sp_transaction_pool::runtime_api::*>>
pub use frame::runtime::apis::ApplyExtrinsicResult
pub use frame::runtime::apis::CheckInherentsResult
pub use frame::runtime::apis::InherentData
pub use frame::runtime::apis::OpaqueMetadata
pub use frame::runtime::apis::impl_runtime_apis
pub use frame::runtime::apis::sp_api
pub mod frame::runtime::prelude
pub use frame::runtime::prelude::<<frame_executive::*>>
pub use frame::runtime::prelude::ConstBool
pub use frame::runtime::prelude::ConstI128
pub use frame::runtime::prelude::ConstI16
pub use frame::runtime::prelude::ConstI32
pub use frame::runtime::prelude::ConstI64
pub use frame::runtime::prelude::ConstI8
pub use frame::runtime::prelude::ConstU128
pub use frame::runtime::prelude::ConstU16
pub use frame::runtime::prelude::ConstU32
pub use frame::runtime::prelude::ConstU64
pub use frame::runtime::prelude::ConstU8
pub use frame::runtime::prelude::NativeVersion
pub use frame::runtime::prelude::RuntimeVersion
pub use frame::runtime::prelude::construct_runtime
pub use frame::runtime::prelude::create_runtime_str
pub use frame::runtime::prelude::derive_impl
pub use frame::runtime::prelude::frame_support
pub use frame::runtime::prelude::ord_parameter_types
pub use frame::runtime::prelude::parameter_types
pub use frame::runtime::prelude::runtime_version
pub mod frame::runtime::testing_prelude
pub use frame::runtime::testing_prelude::BuildStorage
pub use frame::runtime::testing_prelude::Storage
pub mod frame::runtime::types_common
pub type frame::runtime::types_common::AccountId = <<frame::runtime::types_common::Signature as sp_runtime::traits::Verify>::Signer as sp_runtime::traits::IdentifyAccount>::AccountId
pub type frame::runtime::types_common::BlockNumber = u32
pub type frame::runtime::types_common::BlockOf<T, Extra> = sp_runtime::generic::block::Block<sp_runtime::generic::header::Header<frame::runtime::types_common::BlockNumber, sp_runtime::traits::BlakeTwo256>, sp_runtime::generic::unchecked_extrinsic::UncheckedExtrinsic<sp_runtime::multiaddress::MultiAddress<frame::runtime::types_common::AccountId, ()>, <T as frame_system::pallet::Config>::RuntimeCall, frame::runtime::types_common::Signature, Extra>>
pub type frame::runtime::types_common::OpaqueBlock = sp_runtime::generic::block::Block<sp_runtime::generic::header::Header<frame::runtime::types_common::BlockNumber, sp_runtime::traits::BlakeTwo256>, sp_runtime::OpaqueExtrinsic>
pub type frame::runtime::types_common::Signature = sp_runtime::MultiSignature
pub type frame::runtime::types_common::SystemSignedExtensionsOf<T> = (frame_system::extensions::check_non_zero_sender::CheckNonZeroSender<T>, frame_system::extensions::check_spec_version::CheckSpecVersion<T>, frame_system::extensions::check_tx_version::CheckTxVersion<T>, frame_system::extensions::check_genesis::CheckGenesis<T>, frame_system::extensions::check_mortality::CheckMortality<T>, frame_system::extensions::check_nonce::CheckNonce<T>, frame_system::extensions::check_weight::CheckWeight<T>)
pub mod frame::testing_prelude
pub use frame::testing_prelude::<<frame_executive::*>>
pub use frame::testing_prelude::<<frame_system::mocking::*>>
pub use frame::testing_prelude::BuildStorage
pub use frame::testing_prelude::ConstBool
pub use frame::testing_prelude::ConstI128
pub use frame::testing_prelude::ConstI16
pub use frame::testing_prelude::ConstI32
pub use frame::testing_prelude::ConstI64
pub use frame::testing_prelude::ConstI8
pub use frame::testing_prelude::ConstU128
pub use frame::testing_prelude::ConstU16
pub use frame::testing_prelude::ConstU32
pub use frame::testing_prelude::ConstU64
pub use frame::testing_prelude::ConstU8
pub use frame::testing_prelude::NativeVersion
pub use frame::testing_prelude::RuntimeVersion
pub use frame::testing_prelude::Storage
pub use frame::testing_prelude::TestState
pub use frame::testing_prelude::assert_err
pub use frame::testing_prelude::assert_err_ignore_postinfo
pub use frame::testing_prelude::assert_error_encoded_size
pub use frame::testing_prelude::assert_noop
pub use frame::testing_prelude::assert_ok
pub use frame::testing_prelude::assert_storage_noop
pub use frame::testing_prelude::construct_runtime
pub use frame::testing_prelude::create_runtime_str
pub use frame::testing_prelude::derive_impl
pub use frame::testing_prelude::frame_support
pub use frame::testing_prelude::frame_system
pub use frame::testing_prelude::if_std
pub use frame::testing_prelude::ord_parameter_types
pub use frame::testing_prelude::parameter_types
pub use frame::testing_prelude::runtime_version
pub use frame::testing_prelude::storage_alias
pub mod frame::traits
pub use frame::traits::<<frame_support::traits::*>>
pub use frame::traits::<<sp_runtime::traits::*>>
```

---

The road to full stabilization is

- [ ] https://github.com/paritytech/polkadot-sdk/issues/127


- [ ] have a more intentional version bump, as opposed to the current bi
weekly force-major-bump
- [ ] revise the internal API of `frame`, especially what goes into the
`prelude`s.
- [ ] migrate all internal pallets and runtime to use `frame`

---------

Co-authored-by: default avatarkianenigma <[email protected]>
Co-authored-by: default avatarKian Paimani <[email protected]>
Co-authored-by: default avatarOliver Tale-Yazdi <[email protected]>
Co-authored-by: default avatarFrancisco Aguirre <[email protected]>
      43415ef5
  59. Oct 24, 2023
  61. Oct 20, 2023
    • Bastian Köcher's avatar
      `xcm`: Change `TypeInfo::path` to not include `staging` (#1948) · f3bf5c1a
      Bastian Köcher authored 
      The `xcm` crate was renamed to `staging-xcm` to be able to publish it to
crates.io as someone as squatted `xcm`. The problem with this rename is
that the `TypeInfo` includes the crate name which ultimately lands in
the metadata. The metadata is consumed by downstream users like
`polkadot-js` or people building on top of `polkadot-js`. These people
are using the entire `path` to find the type in the type registry. Thus,
their code would break as the type path would now be [`staging_xcm`,
`VersionedXcm`] instead of [`xcm`, `VersionedXcm`]. This pull request
fixes this by renaming the path segment `staging_xcm` to `xcm`.

This requires: https://github.com/paritytech/scale-info/pull/197



---------

Co-authored-by: default avatarFrancisco Aguirre <[email protected]>
      f3bf5c1a
  63. Oct 17, 2023
  65. Oct 11, 2023
    • gupnik's avatar
      Fixes path issue in derive-impl (#1823) · 294e9983
      gupnik authored 
      Needs https://github.com/sam0x17/macro_magic/pull/13

The associated PR allows the export of tokens from macro_magic at the
specified path. This fixes the path issue in derive-impl. Now, we can
import the default config using the standard rust syntax:

```rust
use frame_system::config_preludes::TestDefaultConfig;

[derive_impl(TestDefaultConfig as frame_system::DefaultConfig)]
impl frame_system::DefaultConfig for Test {
   //....
}
```
      294e9983
  67. Oct 01, 2023
  69. Sep 29, 2023
  71. Sep 18, 2023
  73. Sep 04, 2023
    • Chevdor's avatar
      Markdown linter (#1309) · a30092ab
      Chevdor authored 
      

* Add markdown linting

- add linter default rules
- adapt rules to current code
- fix the code for linting to pass
- add CI check

fix #1243

* Fix markdown for Substrate
* Fix tooling install
* Fix workflow
* Add documentation
* Remove trailing spaces
* Update .github/.markdownlint.yaml

Co-authored-by: default avatarOliver Tale-Yazdi <[email protected]>
* Fix mangled markdown/lists
* Fix captalization issues on known words
      a30092ab