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  1. Apr 23, 2024
  3. Apr 08, 2024
  5. Apr 04, 2024
    • Liam Aharon's avatar
      Migrate fee payment from `Currency` to `fungible` (#2292) · bda4e75a
      Liam Aharon authored 
      Part of https://github.com/paritytech/polkadot-sdk/issues/226 
Related https://github.com/paritytech/polkadot-sdk/issues/1833

- Deprecate `CurrencyAdapter` and introduce `FungibleAdapter`
- Deprecate `ToStakingPot` and replace usage with `ResolveTo`
- Required creating a new `StakingPotAccountId` struct that implements
`TypedGet` for the staking pot account ID
- Update parachain common utils `DealWithFees`, `ToAuthor` and
`AssetsToBlockAuthor` implementations to use `fungible`
- Update runtime XCM Weight Traders to use `ResolveTo` instead of
`ToStakingPot`
- Update runtime Transaction Payment pallets to use `FungibleAdapter`
instead of `CurrencyAdapter`
- [x] Blocked by https://github.com/paritytech/polkadot-sdk/pull/1296,
needs the `Unbalanced::decrease_balance` fix
      bda4e75a
  7. Mar 18, 2024
  9. Mar 17, 2024
  11. Mar 15, 2024
  13. Mar 11, 2024
  15. Mar 07, 2024
  17. Feb 28, 2024
    • Liam Aharon's avatar
      Runtime Upgrade ref docs and Single Block Migration example pallet (#1554) · 12ce4f7d
      Liam Aharon authored 
      Closes https://github.com/paritytech/polkadot-sdk-docs/issues/55

- Changes 'current storage version' terminology to less ambiguous
'in-code storage version' (suggestion by @ggwpez

)
- Adds a new example pallet `pallet-example-single-block-migrations`
- Adds a new reference doc to replace
https://docs.substrate.io/maintain/runtime-upgrades/ (temporarily living
in the pallet while we wait for developer hub PR to merge)
- Adds documentation for the `storage_alias` macro
- Improves `trait Hooks` docs 
- Improves `trait GetStorageVersion` docs
- Update the suggested patterns for using `VersionedMigration`, so that
version unchecked migrations are never exported
- Prevents accidental usage of version unchecked migrations in runtimes

https://github.com/paritytech/substrate/pull/14421#discussion_r1255467895
- Unversioned migration code is kept inside `mod version_unchecked`,
versioned code is kept in `pub mod versioned`
- It is necessary to use modules to limit visibility because the inner
migration must be `pub`. See
https://github.com/rust-lang/rust/issues/30905 and

https://internals.rust-lang.org/t/lang-team-minutes-private-in-public-rules/4504/40
for more.

### todo

- [x] move to reference docs to proper place within sdk-docs (now that
https://github.com/paritytech/polkadot-sdk/pull/2102 is merged)
- [x] prdoc

---------

Co-authored-by: default avatarKian Paimani <[email protected]>
Co-authored-by: default avatarJuan <[email protected]>
Co-authored-by: default avatarOliver Tale-Yazdi <[email protected]>
Co-authored-by: command-bot <>
Co-authored-by: default avatargupnik <[email protected]>
      12ce4f7d
  19. Feb 02, 2024
  21. 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
  23. 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
  25. Nov 14, 2023
    • georgepisaltu's avatar
      Add simple collator election mechanism (#1340) · 7d735fc8
      georgepisaltu authored 
      

Fixes https://github.com/paritytech/polkadot-sdk/issues/106

Port of cumulus PR https://github.com/paritytech/cumulus/pull/2960

This PR adds the ability to bid for collator slots even after the max
number of collators have already registered. This eliminates the first
come, first served mechanism that was in place before.

Key changes:
- added `update_bond` extrinsic to allow registered candidates to adjust
their bonds in order to dynamically control their bids
- added `take_candidate_slot` extrinsic to try to replace an already
existing candidate by bidding more than them
- candidates are now kept in a sorted list in the pallet storage, where
the top `DesiredCandidates` out of `MaxCandidates` candidates in the
list will be selected by the session pallet as collators
- if the candidacy bond is increased through a `set_candidacy_bond`
call, candidates which don't meet the new bond requirements are kicked


# Checklist

- [ ] My PR includes a detailed description as outlined in the
"Description" section above
- [ ] My PR follows the [labeling
requirements](https://github.com/paritytech/polkadot-sdk/blob/master/docs/CONTRIBUTING.md#process)
of this project (at minimum one label for `T` required)
- [ ] I have made corresponding changes to the documentation (if
applicable)
- [ ] I have added tests that prove my fix is effective or that my
feature works (if applicable)
- [ ] If this PR alters any external APIs or interfaces used by
Polkadot, the corresponding Polkadot PR is ready as well as the
corresponding Cumulus PR (optional)

---------

Signed-off-by: default avatargeorgepisaltu <[email protected]>
      7d735fc8
  27. Oct 24, 2023
    • Kian Paimani's avatar
      Ensure correct variant count in `Runtime[Hold/Freeze]Reason` (#1900) · 35eb133b
      Kian Paimani authored 
      

closes https://github.com/paritytech/polkadot-sdk/issues/1882

## Breaking Changes

This PR introduces a new item to `pallet_balances::Config`:

```diff
trait Config {
++    type RuntimeFreezeReasons;
}
```

This value is only used to check it against `type MaxFreeze`. A similar
check has been added for `MaxHolds` against `RuntimeHoldReasons`, which
is already given to `pallet_balances`.

In all contexts, you should pass the real `RuntimeFreezeReasons`
generated by `construct_runtime` to `type RuntimeFreezeReasons`. Passing
`()` would also work, but it would imply that the runtime uses no
freezes at all.

---------

Signed-off-by: default avatarOliver Tale-Yazdi <[email protected]>
Co-authored-by: default avatarOliver Tale-Yazdi <[email protected]>
      35eb133b
  29. Aug 30, 2023
  31. Aug 24, 2023
  33. Aug 23, 2023
    • juangirini's avatar
      Companion: restructure macro related exports (#3015) · 8349c8d1
      juangirini authored 
      * restructure macro related exports

* restructure macro related exports

* wip

* wip

* update cargo lock

* refactor RuntimeDebug on unincluded segment

* fmt

* Companion: restructure `benchmarking` macro related exports (#3039)

* wip

* wip

* restructure benchmarking macro related exports

* add cargo lock

---------

Co-authored-by: parity-processbot <>
      8349c8d1
  35. Aug 14, 2023
  37. Jul 20, 2023
  39. Jul 14, 2023
  41. Jul 13, 2023
    • gupnik's avatar
      Moves `Block` to `frame_system` instead of `construct_runtime` and removes... · 24d6e46a
      gupnik authored 
      Moves `Block` to `frame_system` instead of `construct_runtime` and removes `Header` and `BlockNumber` (#2790)

* Fixes

* Removes unused import

* Uses Block and removes BlockNumber/Header from Chain

* Fixes bridges

* Fixes

* Removes unused import

* Fixes build

* Uses correct RelayBlock

* Minor fix

* Fixes glutton-kusama

* Uses correct RelayBlock

* Minor fix

* Fixes benchmark for pallet-bridge-parachains

* Adds appropriate constraints

* Minor fixes

* Removes unused import

* Fixes integrity tests

* Minor fixes

* Updates trait bounds

* Uses custom bound for AsPrimitive

* Fixes trait bounds

* Revert "Fixes trait bounds"

This reverts commit 0b0f42f583f3a616a88afe45fcd06d31e7d9a06f.

* Revert "Uses custom bound for AsPrimitive"

This reverts commit 838e5281adf8b6e9632a2abb9cd550db4ae24126.

* No AsPrimitive trait bound for now

* Removes bounds on Number

* update lockfile for {"substrate", "polkadot"}

* Formatting

* ".git/.scripts/commands/fmt/fmt.sh"

* Minor fix

---------

Co-authored-by: parity-processbot <>
      24d6e46a
  43. Jul 12, 2023
    • Michal Kucharczyk's avatar
      `GenesisBuild<T,I>` deprecated. `BuildGenesisConfig` added (#2757) · 94d2e4bc
      Michal Kucharczyk authored 
      * GenesisBuild<T,I> deprecated. BuildGenesisConfig added

* ".git/.scripts/commands/fmt/fmt.sh"

* integration-tests/emulated: ..Default::default added to genesis configs

* Cargo.lock updated

* Cargo.lock updated

* update lockfile for {"polkadot", "substrate"}

* clippy fixes

* clippy fixes

* clippy fixes again

---------

Co-authored-by: command-bot <>
      94d2e4bc
  45. Jul 11, 2023
  47. Jul 07, 2023
    • joe petrowski's avatar
      Better Handling of Candidates Who Become Invulnerable (#2801) · 5a813402
      joe petrowski authored 
      * remove candidate when to invulnerable

* fix

* candidates to collators

* make parameters consistent and more reasonable

* add call to kick invulnerable candidates

* factor removal into weight

* fix: use accrue instead of add

* make set_invulnerables non-atomic

* benchmark add_invulnerable to account for candidate removal

* don't remove from candidates with set_invulnerables

* fix bounds on benchmarking

* protect against zero min invulnerables underflow

* extra event and tests

* make candidates/invulnerables self-cleaning on session change

* add integrity test

* unused imports

* make rococo-contracts have 1 collator
      5a813402
  49. Jun 14, 2023
  51. Jun 09, 2023
  53. Jun 08, 2023
  55. May 29, 2023
  57. May 25, 2023
    • Michal Kucharczyk's avatar
      pallets: implement `Default` for `GenesisConfig` in `no_std` (#2624) · 4909cbb5
      Michal Kucharczyk authored 
      * pallets: implement Default for GenesisConfig in no_std

This change is follow-up of: https://github.com/paritytech/substrate/pull/14108

It is a step towards: https://github.com/paritytech/substrate/issues/13334

* ".git/.scripts/commands/fmt/fmt.sh"

* update lockfile for {"substrate", "polkadot"}

---------

Co-authored-by: command-bot <>
      4909cbb5
  59. May 24, 2023
    • Bastian Köcher's avatar
      Companion for: Substrate#13869 (#2631) · 490ab62a
      Bastian Köcher authored 
      * Companion for: Substrate#13869

https://github.com/paritytech/substrate/pull/13869

* Fix

* Warning

* update lockfile for {"polkadot", "substrate"}

---------

Co-authored-by: parity-processbot <>
      490ab62a
  61. May 06, 2023
  63. Mar 20, 2023
  65. Mar 13, 2023
    • Vivek Pandya's avatar
      Remove use of trait Store (#2286) · 9f09109e
      Vivek Pandya authored 
      * Remove use of Store trait from xcmp-queue pallet

* Remove Store trait usage from dmp-queue pallet

* Remove Store trait usage from parachain-system pallet

* Remove use of Store trait from cumulus

* Run cargo fmt
      9f09109e
  67. Mar 03, 2023
  69. Jan 29, 2023
  71. Dec 20, 2022
  73. Dec 02, 2022
    • Branislav Kontur's avatar
      BridgeHubKusama - initial setup - (chain_spec + basic runtime without any bridging pallets) (#1764) · c3df7db3
      Branislav Kontur authored 
      * [BridgeHub] Setup Rococo backbone parachain

* [BridgeHub] Setup Wococo parachain backbone (reused from Rococo)
[Bridge-Backport] Rebase-fix
BridgeHub] Added zombienet startup tomls for Rococo/Wococo
Fix typo

* [BridgeHub] Added chain_spec for live Rococo/Wococo

* [BridgeHub] Clean bridge-hub-rococo runtime

* [BridgeHub] Add bridge-hub-rococo to CI pipelines

* [BridgeHub] Added bridge-hub-kusama - empty runtime/chain_spec setup

* Fixes

* Fixes for BH

* Fixes for other runtimes - align all

* Fixes - const

* Fixes const

* Fixes

* Fix kusama-local

* Sample zombienet runs

* Fixes

* Fixes for benchmarking

* Fixes CI

* Fixes

* ".git/.scripts/bench-bot.sh" pallet bridge-hub-kusama bridge-hubs frame_system

* ".git/.scripts/bench-bot.sh" pallet bridge-hub-kusama bridge-hubs pallet_collator_selection

* ".git/.scripts/bench-bot.sh" pallet bridge-hub-kusama bridge-hubs pallet_balances

* ".git/.scripts/bench-bot.sh" pallet bridge-hub-kusama bridge-hubs pallet_session

* Fixes name

* Fixes readme

* ".git/.scripts/bench-bot.sh" pallet bridge-hub-kusama bridge-hubs pallet_timestamp

* ".git/.scripts/bench-bot.sh" pallet bridge-hub-kusama bridge-hubs cumulus_pallet_xcmp_queue

* ".git/.scripts/bench-bot.sh" pallet bridge-hub-kusama bridge-hubs pallet_collator_selection

* Fixes

* Fixes

* rustfmt

* Fixes

* Added pallet_utility/pallet_multisig

* Blind try for regex pr-custom-review.yml (added bridge-hub-kusama + collectives-polkadot)

* Fixes

* Fixes

* ".git/.scripts/bench-bot.sh" pallet bridge-hub-kusama bridge-hubs pallet_utility

* ".git/.scripts/bench-bot.sh" pallet bridge-hub-kusama bridge-hubs pallet_multisig

* Trying to fix sed expression?

* Added license headers + correct "DAG:" desc

Co-authored-by: command-bot <>
      c3df7db3
  75. Oct 03, 2022
  77. Sep 20, 2022