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  1. Jan 26, 2024
  3. Jan 24, 2024
  5. Jan 23, 2024
    • Niklas Adolfsson's avatar
      rpc: backpressured RPC server (bump jsonrpsee 0.20) (#1313) · e16ef086
      Niklas Adolfsson authored 
      This is a rather big change in jsonrpsee, the major things in this bump
are:
- Server backpressure (the subscription impls are modified to deal with
that)
- Allow custom error types / return types (remove jsonrpsee::core::Error
and jsonrpee::core::CallError)
- Bug fixes (graceful shutdown in particular not used by substrate
anyway)
   - Less dependencies for the clients in particular
   - Return type requires Clone in method call responses
   - Moved to tokio channels
   - Async subscription API (not used in this PR)

Major changes in this PR:
- The subscriptions are now bounded and if subscription can't keep up
with the server it is dropped
- CLI: add parameter to configure the jsonrpc server bounded message
buffer (default is 64)
- Add our own subscription helper to deal with the unbounded streams in
substrate

The most important things in this PR to review is the added helpers
functions in `substrate/client/rpc/src/utils.rs` and the rest is pretty
much chore.

Regarding the "bounded buffer limit" it may cause the server to handle
the JSON-RPC calls
slower than before.

The message size limit is bounded by "--rpc-response-size" thus "by
default 10MB * 64 = 640MB"
but the subscription message size is not covered by this limit and could
be capped as well.

Hopefully the last release prior to 1.0, sorry in advance for a big PR

Previous attempt: https://github.com/paritytech/substrate/pull/13992

Resolves https://github.com/paritytech/polkadot-sdk/issues/748, resolves
https://github.com/paritytech/polkadot-sdk/issues/627
      e16ef086
  7. Jan 22, 2024
  9. Jan 19, 2024
  11. Jan 18, 2024
  13. Jan 16, 2024
    • Francisco Aguirre's avatar
      XCMv4 (#1230) · 8428f678
      Francisco Aguirre authored 
      

# Note for reviewer

Most changes are just syntax changes necessary for the new version.
Most important files should be the ones under the `xcm` folder.

# Description 

Added XCMv4.

## Removed `Multi` prefix
The following types have been renamed:
- MultiLocation -> Location
- MultiAsset -> Asset
- MultiAssets -> Assets
- InteriorMultiLocation -> InteriorLocation
- MultiAssetFilter -> AssetFilter
- VersionedMultiAsset -> VersionedAsset
- WildMultiAsset -> WildAsset
- VersionedMultiLocation -> VersionedLocation

In order to fix a name conflict, the `Assets` in `xcm-executor` were
renamed to `HoldingAssets`, as they represent assets in holding.

## Removed `Abstract` asset id

It was not being used anywhere and this simplifies the code.

Now assets are just constructed as follows:

```rust
let asset: Asset = (AssetId(Location::new(1, Here)), 100u128).into();
```

No need for specifying `Concrete` anymore.

## Outcome is now a named fields struct

Instead of

```rust
pub enum Outcome {
  Complete(Weight),
  Incomplete(Weight, Error),
  Error(Error),
}
```

we now have

```rust
pub enum Outcome {
  Complete { used: Weight },
  Incomplete { used: Weight, error: Error },
  Error { error: Error },
}
```

## Added Reanchorable trait

Now both locations and assets implement this trait, making it easier to
reanchor both.

## New syntax for building locations and junctions

Now junctions are built using the following methods:

```rust
let location = Location {
    parents: 1,
    interior: [Parachain(1000), PalletInstance(50), GeneralIndex(1984)].into()
};
```

or

```rust
let location = Location::new(1, [Parachain(1000), PalletInstance(50), GeneralIndex(1984)]);
```

And they are matched like so:

```rust
match location.unpack() {
  (1, [Parachain(id)]) => ...
  (0, Here) => ...,
  (1, [_]) => ...,
}
```

This syntax is mandatory in v4, and has been also implemented for v2 and
v3 for easier migration.

This was needed to make all sizes smaller.

# TODO
- [x] Scaffold v4
- [x] Port github.com/paritytech/polkadot/pull/7236
- [x] Remove `Multi` prefix
- [x] Remove `Abstract` asset id

---------

Co-authored-by: command-bot <>
Co-authored-by: default avatarKeith Yeung <[email protected]>
      8428f678
    • Xavier Lau's avatar
      CI check features (#1708) · 05cfb02b
      Xavier Lau authored 
      To resolve issue #1136.

This is a cross verification against zepter.

- [cargo-featalign](https://github.com/hack-ink/cargo-featalign):
Verifies the proper propagation of all features.
- [zepter](https://github.com/ggwpez/zepter): Checks for accidentally
enabled features.

cc @ggwpez

 

---
Switch to a new branch. Original PR #1537.

---------

Signed-off-by: default avatarXavier Lau <[email protected]>
Signed-off-by: default avatarOliver Tale-Yazdi <[email protected]>
Co-authored-by: default avatarOliver Tale-Yazdi <[email protected]>
Co-authored-by: default avatarChevdor <[email protected]>
      05cfb02b
  15. Jan 15, 2024
    • Liam Aharon's avatar
      Unbalanced and Balanced fungible conformance tests, and fungible fixes (#1296) · 46090ff1
      Liam Aharon authored 
      Original PR https://github.com/paritytech/substrate/pull/14655

---

Partial https://github.com/paritytech/polkadot-sdk/issues/225

- [x] Adds conformance tests for Unbalanced
- [x] Adds conformance tests for Balanced
- Several minor fixes to fungible default implementations and the
Balances pallet
- [x] `Unbalanced::decrease_balance` can reap account when
`Preservation` is `Preserve`
- [x] `Balanced::pair` can return pairs of imbalances which do not
cancel each other out
   - [x] Balances pallet `active_issuance` 'underflow'
- [x] Refactors the conformance test file structure to match the
fungible file structure: tests for traits in regular.rs go into a test
file named regular.rs, tests for traits in freezes.rs go into a test
file named freezes.rs, etc.
 - [x] Improve doc comments
 - [x] Simplify macros

## Fixes

### `Unbalanced::decrease_balance` can reap account when called with
`Preservation::Preserve`
There is a potential issue in the default implementation of
`Unbalanced::decrease_balance`. The implementation can delete an account
even when it is called with `preservation: Preservation::Preserve`. This
seems to contradict the documentation of `Preservation::Preserve`:

```rust
	/// The account may not be killed and our provider reference must remain (in the context of
	/// tokens, this means that the account may not be dusted).
	Preserve,
```

I updated `Unbalanced::decrease_balance` to return
`Err(TokenError::BelowMinimum)` when a withdrawal would cause the
account to be reaped and `preservation: Preservation::Preserve`.

- [ ] TODO Confirm with @gavofyork that this is correct behavior

Test for this behavior:


https://github.com/paritytech/polkadot-sdk/blob/e5c876dd6b59e2b7dbacaa4538cb42c802db3730/substrate/frame/support/src/traits/tokens/fungible/conformance_tests/regular.rs#L912-L937

### `Balanced::pair` returning non-canceling pairs

`Balanced::pair` is supposed to create a pair of imbalances that cancel
each other out. However this is not the case when the method is called
with an amount greater than the total supply.

In the existing default implementation, `Balanced::pair` creates a pair
by first rescinding the balance, creating `Debt`, and then issuing the
balance, creating `Credit`.

When creating `Debt`, if the amount to create exceeds the
`total_supply`, `total_supply` units of `Debt` are created *instead* of
`amount` units of `Debt`. This can lead to non-canceling amount of
`Credit` and `Debt` being created.

To address this, I create the credit and debt directly in the method
instead of calling `issue` and `rescind`.

Test for this behavior:


https://github.com/paritytech/polkadot-sdk/blob/e5c876dd6b59e2b7dbacaa4538cb42c802db3730/substrate/frame/support/src/traits/tokens/fungible/conformance_tests/regular.rs#L1323-L1346

### `Balances` pallet `active_issuance` 'underflow'

This PR resolves an issue in the `Balances` pallet that can lead to odd
behavior of `active_issuance`.

Currently, the Balances pallet doesn't check if `InactiveIssuance`
remains less than or equal to `TotalIssuance` when supply is
deactivated. This allows `InactiveIssuance` to be greater than
`TotalIssuance`, which can result in unexpected behavior from the
perspective of the fungible API.

`active_issuance` is derived from
`TotalIssuance.saturating_sub(InactiveIssuance)`.

If an `amount` is deactivated that causes `InactiveIssuance` to become
greater TotalIssuance, `active_issuance` will return 0. However once in
that state, reactivating an amount will not increase `active_issuance`
by the reactivated `amount` as expected.

Consider this test where the last assertion would fail due to this
issue:


https://github.com/paritytech/polkadot-sdk/blob/e5c876dd6b59e2b7dbacaa4538cb42c802db3730/substrate/frame/support/src/traits/tokens/fungible/conformance_tests/regular.rs#L1036-L1071



To address this, I've modified the `deactivate` function to ensure
`InactiveIssuance` never surpasses `TotalIssuance`.

---------

Co-authored-by: default avatarMuharem <[email protected]>
      46090ff1
  17. Jan 13, 2024
  19. Jan 11, 2024
    • Michal Kucharczyk's avatar
      frame-support: sp-runtime dependency updated (serde) (#2907) · c8112e2c
      Michal Kucharczyk authored 
      `frame-support` crate compilation fails (reported by @koute):

```
$ cargo check --no-default-features --target=wasm32-unknown-unknown

error[E0277]: the trait bound `GC: Serialize` is not satisfied
    --> substrate/frame/support/src/genesis_builder_helper.rs:32:24
     |
32   |     serde_json::to_string(&GC::default())
     |     --------------------- ^^^^^^^^^^^^^^ the trait `Serialize` is not implemented for `GC`
     |     |
     |     required by a bound introduced by this call
     |
note: required by a bound in `serde_json::to_string`
    --> /home/kou/.cargo/registry/src/index.crates.io-6f17d22bba15001f/serde_json-1.0.111/src/ser.rs:2209:17
     |
2207 | pub fn to_string<T>(value: &T) -> Result<String>
     |        --------- required by a bound in this function
2208 | where
2209 |     T: ?Sized + Serialize,
     |                 ^^^^^^^^^ required by this bound in `to_string`
help: consider further restricting this bound
     |
30   |     GC: BuildGenesisConfig + Default + serde::Serialize,
     |                                      ++++++++++++++++++
```

This PR should fix this.

For all runtimes `sp-runtime/serde` feature was likely enabled by this
(and few other pallets):

https://github.com/paritytech/polkadot-sdk/blob/f2a750ee86e72c9ab677aaf588d0a33ee8446bef/substrate/frame/system/Cargo.toml#L27
      c8112e2c
  21. Jan 10, 2024
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  25. Jan 08, 2024
  27. Jan 07, 2024
  29. Jan 05, 2024
  31. Jan 04, 2024
  33. Dec 28, 2023
  35. Dec 23, 2023
  37. Dec 22, 2023
  39. Dec 20, 2023
    • joe petrowski's avatar
      Add Authorize Upgrade Pattern to Frame System (#2682) · 280aa0b5
      joe petrowski authored 
      Adds the `authorize_upgrade` -> `enact_authorized_upgrade` pattern to
`frame-system`. This will be useful for upgrading bridged chains that
are under the governance of Polkadot without passing entire runtime Wasm
blobs over a bridge.

Notes:

- Changed `enact_authorized_upgrade` to `apply_authorized_upgrade`.
Personal opinion, "apply" more accurately expresses what it's doing. Can
change back if outvoted.
- Remove `check_version` in favor of two extrinsics, so as to make
_checked_ the default.
- Left calls in `parachain-system` and marked as deprecated to prevent
breaking the API. They just call into the `frame-system` functions.
- Updated `frame-system` benchmarks to v2 syntax.

---------

Co-authored-by: command-bot <>
      280aa0b5
  41. Dec 19, 2023
  43. Dec 18, 2023
  45. Dec 15, 2023
  47. Dec 14, 2023
  49. Dec 13, 2023
  51. Dec 11, 2023
  53. Dec 10, 2023
  55. Dec 08, 2023
    • Bastian Köcher's avatar
      Update proc-macro-crate (#2660) · f6ae1458
      Bastian Köcher authored
      f6ae1458
    • 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
  57. Dec 07, 2023
  59. Dec 04, 2023
  61. Dec 01, 2023