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  1. Mar 13, 2024
    • gupnik's avatar
      Construct Runtime v2 (#1378) · 82f3c3e2
      gupnik authored
      
      
      Moved from https://github.com/paritytech/substrate/pull/14788
      
      ----
      
      Fixes https://github.com/paritytech/polkadot-sdk/issues/232
      
      This PR introduces outer-macro approach for `construct_runtime` as
      discussed in the linked issue. It looks like the following:
      ```rust
      #[frame_support::runtime]
      mod runtime {
      	#[runtime::runtime]
              #[runtime::derive(
      		RuntimeCall,
      		RuntimeEvent,
      		RuntimeError,
      		RuntimeOrigin,
      		RuntimeFreezeReason,
      		RuntimeHoldReason,
      		RuntimeSlashReason,
      		RuntimeLockId,
                      RuntimeTask,
      	)]
      	pub struct Runtime;
      
      	#[runtime::pallet_index(0)]
      	pub type System = frame_system;
      
      	#[runtime::pallet_index(1)]
      	pub type Timestamp = pallet_timestamp;
      
      	#[runtime::pallet_index(2)]
      	pub type Aura = pallet_aura;
      
      	#[runtime::pallet_index(3)]
      	pub type Grandpa = pallet_grandpa;
      
      	#[runtime::pallet_index(4)]
      	pub type Balances = pallet_balances;
      
      	#[runtime::pallet_index(5)]
      	pub type TransactionPayment = pallet_transaction_payment;
      
      	#[runtime::pallet_index(6)]
      	pub type Sudo = pallet_sudo;
      
      	// Include the custom logic from the pallet-template in the runtime.
      	#[runtime::pallet_index(7)]
      	pub type TemplateModule = pallet_template;
      }
      ```
      
      ## Features
      - `#[runtime::runtime]` attached to a struct defines the main runtime
      - `#[runtime::derive]` attached to this struct defines the types
      generated by runtime
      - `#[runtime::pallet_index]` must be attached to a pallet to define its
      index
      - `#[runtime::disable_call]` can be optionally attached to a pallet to
      disable its calls
      - `#[runtime::disable_unsigned]` can be optionally attached to a pallet
      to disable unsigned calls
      - A pallet instance can be defined as `TemplateModule:
      pallet_template<Instance>`
      - An optional attribute can be defined as
      `#[frame_support::runtime(legacy_ordering)]` to ensure that the order of
      hooks is same as the order of pallets (and not based on the
      pallet_index). This is to support legacy runtimes and should be avoided
      for new ones.
      
      ## Todo
      - [x] Update the latest syntax in kitchensink and tests
      - [x] Update UI tests
      - [x] Docs
      
      ## Extension
      - Abstract away the Executive similar to
      https://github.com/paritytech/substrate/pull/14742
      - Optionally avoid the need to specify all runtime types (TBD)
      
      ---------
      
      Co-authored-by: default avatarFrancisco Aguirre <[email protected]>
      Co-authored-by: Nikhil Gupta <>
      82f3c3e2
  2. Mar 12, 2024
  3. Mar 11, 2024
    • philoniare's avatar
      [Deprecation] Remove the deprecated Store trait (#3532) · d3f81056
      philoniare authored
      
      
      # Description
      
      *Removes the deprecated `trait Store` feature from the code base*
      
      Fixes #222
      
      ---------
      
      Co-authored-by: default avatarDónal Murray <[email protected]>
      d3f81056
    • s0me0ne-unkn0wn's avatar
      Remove getters from `im-online` pallet (#3589) · 4249a3d6
      s0me0ne-unkn0wn authored
      As I've been dancing around this pallet for quite some time anyway, I
      decided to remove getters at once. There were only a few leftovers in
      tests.
      
      Related: #3326 
      CC @muraca
      4249a3d6
    • Dónal Murray's avatar
      [pallet_broker] Fix `adapt_price` behaviour at zero (#3636) · aa353283
      Dónal Murray authored
      
      
      This fixes the behaviour of `Linear` which is the default implementation
      of the `AdaptPrice` trait in the broker pallet. Previously if cores were
      offered but not sold in only one sale, the price would be set to zero
      and due to the logic being purely multiplicative, the price would stay
      at 0 indefinitely.
      
      This could be further paired with a configurable minimum in the broker
      pallet itself, which will be a future PR.
      
      This affects the Rococo and Westend Coretime chains, but Kusama has a
      different implementation so this isn't required for the Kusama launch. I
      actually thought I opened this a while ago.
      
      ---------
      
      Co-authored-by: default avatarBastian Köcher <[email protected]>
      aa353283
  4. Mar 10, 2024
  5. Mar 09, 2024
    • Viki Val's avatar
      🐛 Depositing PalletAttributeSet on incorrect nft (#2740) · 1c435e91
      Viki Val authored
      
      
      ## Context
      
      Implementing `HolderOf(collection_id)` we have observed a fancy glitch
      where pallet deposits event with incorrect values
      
      ### Test case 
      
      [Observe following
      extrinsic](https://assethub-polkadot.subscan.io/extrinsic/0xdc72321b7674aa209c2f194ed49bd6bd12708af103f98b5b9196e0132dcba777)
      
      To mint in collection `51` user needs to be `HolderOf(50)`.
      Therefore current user is owner of item `394` `witness_data {
      owned_item: 394 }`
      
      All checking is done correctly, storage is updated correctly
      
       
      ![photo_2023-12-18 16 07
      11](https://github.com/paritytech/polkadot-sdk/assets/22471030/ca991272-156d-4db1-97b2-1a2873fc5d3f)
      
      However the event which is emitted does not make semantic sense as we
      updated storage for `50-394` not for `51-114`
      
      ![photo_2023-12-18 16 07
      17](https://github.com/paritytech/polkadot-sdk/assets/22471030/c998a92c-e306-4433-aad8-103078140e23)
      
      ## The fix 
      
      This PR fixes that depositing `PalletAttributeSet` emits correct values.
      
      ---------
      
      Co-authored-by: default avatarJegor Sidorenko <[email protected]>
      Co-authored-by: default avatarJegor Sidorenko <[email protected]>
      1c435e91
  6. Mar 08, 2024
  7. Mar 07, 2024
  8. Mar 06, 2024
  9. Mar 05, 2024
    • Oliver Tale-Yazdi's avatar
      [FRAME] Use 'ready' pages in XCMP suspend logic (#2393) · 329c0772
      Oliver Tale-Yazdi authored
      
      
      Changes:
      - `QueueFootprint` gets a new field; `ready_pages` that contains the
      non-overweight and not yet processed pages.
      - `XCMP` queue pallet is change to use the `ready_pages` instead of
      `pages` to calculate the channel suspension thresholds.
      
      This should give the XCMP queue pallet a more correct view of when to
      suspend channels.
      
      ---------
      
      Signed-off-by: default avatarOliver Tale-Yazdi <[email protected]>
      329c0772
    • Rodrigo Quelhas's avatar
      remove deprecated type 'GenesisConfig' (#3378) · c367ac24
      Rodrigo Quelhas authored
      
      
      # Description
      
      Removed deprecated type `GenesisConfig` from the codebase.
      
      Closes https://github.com/paritytech/polkadot-sdk/issues/175
      
      # Checklist
      
      - [x] My PR includes a detailed description as outlined in the
      "Description" section above
      - [x] My PR follows the [labeling requirements](CONTRIBUTING.md#Process)
      of this project (at minimum one label for `T`
        required)
      - [x] I have made corresponding changes to the documentation (if
      applicable)
      
      ---------
      
      Co-authored-by: default avatarLiam Aharon <[email protected]>
      Co-authored-by: default avatarMichal Kucharczyk <[email protected]>
      c367ac24
    • 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/35349df9/cumulus/zombienet/examples/small_network.toml
      instead.
      4c810609
    • Matteo Muraca's avatar
      Removed `pallet::getter` usage from `pallet-collective` (#3456) · a71f018c
      Matteo Muraca authored
      Part of #3326 
      This one is easier as all the storage items are public. 
      
      @ggwpez @Kianenigma @shawntabrizi
      
      
      
      ---------
      
      Signed-off-by: default avatarMatteo Muraca <[email protected]>
      Co-authored-by: default avatarLiam Aharon <[email protected]>
      Co-authored-by: command-bot <>
      Co-authored-by: default avatarKian Paimani <[email protected]>
      a71f018c
    • PG Herveou's avatar
      0eda0b3f
  10. Mar 04, 2024
    • PG Herveou's avatar
      Contracts: Fix typo (#3563) · 0708cf38
      PG Herveou authored
      0708cf38
    • 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]>
      Co-authored-by: default avatarNikhil Gupta <[email protected]>
      Co-authored-by: default avatargeorgepisaltu <[email protected]>
      Co-authored-by: default avatarChevdor <[email protected]>
      Co-authored-by: default avatarBastian Köcher <[email protected]>
      Co-authored-by: default avatarMaciej <[email protected]>
      Co-authored-by: default avatarJavier Viola <[email protected]>
      Co-authored-by: default avatarMarcin S. <[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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      Co-authored-by: default avatargeorgepisaltu <[email protected]>
      Co-authored-by: command-bot <>
      fd5f9292
  11. Mar 03, 2024
  12. 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
  13. Feb 29, 2024
    • Kian Paimani's avatar
      Fix call enum's metadata regression (#3513) · c0e52a9e
      Kian Paimani authored
      This fixes an issue introduced in
      https://github.com/paritytech/substrate/pull/14101, in which I removed
      the `Call` enum's documentation and replaced it with a link to the
      `Pallet` struct, but this also removed any docs related to call from the
      metadata.
      
      I tried to add a regression test for this, but it seems to me that this
      is not possible, given that using `type-info` we only assert in type-ids
      for `Call`, `Event` and `Error`. I removed some doc comments from a test
      setup in `frame-support-test` to demonstrate the issue there. @jsdw do
      you have any comments on this?
      
      I also fixed a small issue in the custom html/css of `polkadot-sdk-doc`
      crate, making sure it does not affect the rust-doc page of all other
      crates.
      
      - [x] Investigate a regression test
      - [x] prdoc
      c0e52a9e
    • philoniare's avatar
      [Deprecation] Remove sp_weights::OldWeight (#3491) · a22319cd
      philoniare authored
      
      
      # Description
      
      *Removes `sp_weights::OldWeight` and its usage*
      
      Fixes #144
      
      ---------
      
      Co-authored-by: default avatarLiam Aharon <[email protected]>
      a22319cd
  14. Feb 28, 2024
    • Oliver Tale-Yazdi's avatar
      Multi-Block-Migrations, `poll` hook and new System callbacks (#1781) · eefd5fe4
      Oliver Tale-Yazdi authored
      
      
      This MR is the merge of
      https://github.com/paritytech/substrate/pull/14414 and
      https://github.com/paritytech/substrate/pull/14275. It implements
      [RFC#13](https://github.com/polkadot-fellows/RFCs/pull/13), closes
      https://github.com/paritytech/polkadot-sdk/issues/198.
      
      ----- 
      
      This Merge request introduces three major topicals:
      
      1. Multi-Block-Migrations
      1. New pallet `poll` hook for periodic service work
      1. Replacement hooks for `on_initialize` and `on_finalize` in cases
      where `poll` cannot be used
      
      and some more general changes to FRAME.  
      The changes for each topical span over multiple crates. They are listed
      in topical order below.
      
      # 1.) Multi-Block-Migrations
      
      Multi-Block-Migrations are facilitated by creating `pallet_migrations`
      and configuring `System::Config::MultiBlockMigrator` to point to it.
      Executive picks this up and triggers one step of the migrations pallet
      per block.
      The chain is in lockdown mode for as long as an MBM is ongoing.
      Executive does this by polling `MultiBlockMigrator::ongoing` and not
      allowing any transaction in a block, if true.
      
      A MBM is defined through trait `SteppedMigration`. A condensed version
      looks like this:
      ```rust
      /// A migration that can proceed in multiple steps.
      pub trait SteppedMigration {
      	type Cursor: FullCodec + MaxEncodedLen;
      	type Identifier: FullCodec + MaxEncodedLen;
      
      	fn id() -> Self::Identifier;
      
      	fn max_steps() -> Option<u32>;
      
      	fn step(
      		cursor: Option<Self::Cursor>,
      		meter: &mut WeightMeter,
      	) -> Result<Option<Self::Cursor>, SteppedMigrationError>;
      }
      ```
      
      `pallet_migrations` can be configured with an aggregated tuple of these
      migrations. It then starts to migrate them one-by-one on the next
      runtime upgrade.
      Two things are important here:
      - 1. Doing another runtime upgrade while MBMs are ongoing is not a good
      idea and can lead to messed up state.
      - 2. **Pallet Migrations MUST BE CONFIGURED IN `System::Config`,
      otherwise it is not used.**
      
      The pallet supports an `UpgradeStatusHandler` that can be used to notify
      external logic of upgrade start/finish (for example to pause XCM
      dispatch).
      
      Error recovery is very limited in the case that a migration errors or
      times out (exceeds its `max_steps`). Currently the runtime dev can
      decide in `FailedMigrationHandler::failed` how to handle this. One
      follow-up would be to pair this with the `SafeMode` pallet and enact
      safe mode when an upgrade fails, to allow governance to rescue the
      chain. This is currently not possible, since governance is not
      `Mandatory`.
      
      ## Runtime API
      
      - `Core`: `initialize_block` now returns `ExtrinsicInclusionMode` to
      inform the Block Author whether they can push transactions.
      
      ### Integration
      
      Add it to your runtime implementation of `Core` and `BlockBuilder`:
      ```patch
      diff --git a/runtime/src/lib.rs b/runtime/src/lib.rs
      @@ impl_runtime_apis! {
      	impl sp_block_builder::Core<Block> for Runtime {
      -		fn initialize_block(header: &<Block as BlockT>::Header) {
      +		fn initialize_block(header: &<Block as BlockT>::Header) -> RuntimeExecutiveMode {
      			Executive::initialize_block(header)
      		}
      
      		...
      	}
      ```
      
      # 2.) `poll` hook
      
      A new pallet hook is introduced: `poll`. `Poll` is intended to replace
      mostly all usage of `on_initialize`.
      The reason for this is that any code that can be called from
      `on_initialize` cannot be migrated through an MBM. Currently there is no
      way to statically check this; the implication is to use `on_initialize`
      as rarely as possible.
      Failing to do so can result in broken storage invariants.
      
      The implementation of the poll hook depends on the `Runtime API` changes
      that are explained above.
      
      # 3.) Hard-Deadline callbacks
      
      Three new callbacks are introduced and configured on `System::Config`:
      `PreInherents`, `PostInherents` and `PostTransactions`.
      These hooks are meant as replacement for `on_initialize` and
      `on_finalize` in cases where the code that runs cannot be moved to
      `poll`.
      The reason for this is to make the usage of HD-code (hard deadline) more
      explicit - again to prevent broken invariants by MBMs.
      
      # 4.) FRAME (general changes)
      
      ## `frame_system` pallet
      
      A new memorize storage item `InherentsApplied` is added. It is used by
      executive to track whether inherents have already been applied.
      Executive and can then execute the MBMs directly between inherents and
      transactions.
      
      The `Config` gets five new items:
      - `SingleBlockMigrations` this is the new way of configuring migrations
      that run in a single block. Previously they were defined as last generic
      argument of `Executive`. This shift is brings all central configuration
      about migrations closer into view of the developer (migrations that are
      configured in `Executive` will still work for now but is deprecated).
      - `MultiBlockMigrator` this can be configured to an engine that drives
      MBMs. One example would be the `pallet_migrations`. Note that this is
      only the engine; the exact MBMs are injected into the engine.
      - `PreInherents` a callback that executes after `on_initialize` but
      before inherents.
      - `PostInherents` a callback that executes after all inherents ran
      (including MBMs and `poll`).
      - `PostTransactions` in symmetry to `PreInherents`, this one is called
      before `on_finalize` but after all transactions.
      
      A sane default is to set all of these to `()`. Example diff suitable for
      any chain:
      ```patch
      @@ impl frame_system::Config for Test {
       	type MaxConsumers = ConstU32<16>;
      +	type SingleBlockMigrations = ();
      +	type MultiBlockMigrator = ();
      +	type PreInherents = ();
      +	type PostInherents = ();
      +	type PostTransactions = ();
       }
      ```
      
      An overview of how the block execution now looks like is here. The same
      graph is also in the rust doc.
      
      <details><summary>Block Execution Flow</summary>
      <p>
      
      ![Screenshot 2023-12-04 at 19 11
      29](https://github.com/paritytech/polkadot-sdk/assets/10380170/e88a80c4-ef11-4faa-8df5-8b33a724c054)
      
      </p>
      </details> 
      
      ## Inherent Order
      
      Moved to https://github.com/paritytech/polkadot-sdk/pull/2154
      
      ---------------
      
      
      ## TODO
      
      - [ ] Check that `try-runtime` still works
      - [ ] Ensure backwards compatibility with old Runtime APIs
      - [x] Consume weight correctly
      - [x] Cleanup
      
      ---------
      
      Signed-off-by: default avatarOliver Tale-Yazdi <[email protected]>
      Co-authored-by: default avatarLiam Aharon <[email protected]>
      Co-authored-by: default avatarJuan Girini <[email protected]>
      Co-authored-by: command-bot <>
      Co-authored-by: default avatarFrancisco Aguirre <[email protected]>
      Co-authored-by: default avatarGavin Wood <[email protected]>
      Co-authored-by: default avatarBastian Köcher <[email protected]>
      eefd5fe4
    • Kian Paimani's avatar
      Add documentation around FRAME Offchain workers (#3463) · 14530269
      Kian Paimani authored
      
      
      - deprecation companion:
      https://github.com/substrate-developer-hub/substrate-docs/pull/2136
      - inspired by
      https://substrate.stackexchange.com/questions/11058/how-can-i-create-ocw-that-wont-activates-every-block-but-will-activates-only-w/11060#11060
      
      ---------
      
      Co-authored-by: default avatarSergej Sakac <[email protected]>
      14530269
    • 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
    • Liam Aharon's avatar
      Introduce storage attr macro `#[disable_try_decode_storage]` and set it on... · 95da6583
      Liam Aharon authored
      Introduce storage attr macro `#[disable_try_decode_storage]` and set it on `System::Events` and `ParachainSystem::HostConfiguration` (#3454)
      
      Closes https://github.com/paritytech/polkadot-sdk/issues/2560
      
      Allows marking storage items with `#[disable_try_decode_storage]`, and
      uses it with `System::Events`.
      
      Question: what's the recommended way to write a test for this? I
      couldn't find a test for similar existing macro `#[whitelist_storage]`.
      95da6583
  15. Feb 27, 2024
    • Kian Paimani's avatar
      Add documentation around FRAME Origin (#3362) · 29369a4e
      Kian Paimani authored
      Does the following: 
      
      - Add a reference doc page named `frame_runtime_types`, which explains
      what types like `RuntimeOrigin`, `RuntimeCall` etc are.
      - On top of it, it adds a reference doc page called `frame_origin` which
      explains a few important patterns that we use around origins
      - And finally brushes up `#[frame::origin]` docs. 
      - Updates the theme, sidebar and favicon to look like: 
      
      <img width="1728" alt="Screenshot 2024-02-20 at 12 16 00"
      src="https://github.com/paritytech/polkadot-sdk/assets/5588131/6d60a16b-2081-411b-8869-43b91920cca9">
      
      
      All of this was inspired by
      https://substrate.stackexchange.com/questions/10992/how-do-you-find-the-public-key-for-the-medium-spender-track-origin/10993
      
      closes https://github.com/paritytech/polkadot-sdk-docs/issues/45
      closes https://github.com/paritytech/polkadot-sdk-docs/issues/43
      contributes / overlaps with
      https://github.com/paritytech/polkadot-sdk/pull/2638 cc @liamaharon
      
      
      deprecation companion:
      https://github.com/substrate-developer-hub/substrate-docs/pull/2131
      pba-content companion:
      https://github.com/Polkadot-Blockchain-Academy/pba-content/pull/977
      
      ---------
      
      Co-authored-by: default avatarRadha <[email protected]>
      Co-authored-by: default avatarSebastian Kunert <[email protected]>
      Co-authored-by: default avatarGonçalo Pestana <[email protected]>
      Co-authored-by: default avatarLiam Aharon <[email protected]>
      29369a4e
  16. Feb 26, 2024
  17. Feb 23, 2024
    • Sebastian Kunert's avatar
      PoV Reclaim Runtime Side (#3002) · 3386377b
      Sebastian Kunert authored
      
      
      # Runtime side for PoV Reclaim
      
      ## Implementation Overview
      - Hostfunction to fetch the storage proof size has been added to the
      PVF. It uses the size tracking recorder that was introduced in my
      previous PR.
      - Mechanisms to use the reclaim HostFunction have been introduced.
      - 1. A SignedExtension that checks the node-reported proof size before
      and after application of an extrinsic. Then it reclaims the difference.
      - 2. A manual helper to make reclaiming easier when manual interaction
      is required, for example in `on_idle` or other hooks.
      - In order to utilize the manual reclaiming, I modified `WeightMeter` to
      support the reduction of consumed weight, at least for storage proof
      size.
      
      ## How to use
      To enable the general functionality for a parachain:
      1. Add the SignedExtension to your parachain runtime. 
      2. Provide the HostFunction to the node
      3. Enable proof recording during block import
      
      ## TODO
      - [x] PRDoc
      
      ---------
      
      Co-authored-by: default avatarDmitry Markin <[email protected]>
      Co-authored-by: default avatarDavide Galassi <[email protected]>
      Co-authored-by: default avatarBastian Köcher <[email protected]>
      3386377b
    • Dino Pačandi's avatar
      pallet-membership weights (#3324) · 5fc6d67b
      Dino Pačandi authored
      
      
      ## Summary
      * use benchamarked weights instead of hardcoded ones for
      `pallet-membership`
      * rename benchmark to match extrinsic name
      * remove unnecessary dependency from `clear_prime`
      
      ---------
      
      Signed-off-by: default avatarOliver Tale-Yazdi <[email protected]>
      Co-authored-by: default avatarOliver Tale-Yazdi <[email protected]>
      5fc6d67b
    • PG Herveou's avatar
      Contracts Add new version for marking new stable API (#3415) · f2645eec
      PG Herveou authored
      Add a `ApiVersion` constant to the pallet-contracts Config to
      communicate with developers the current state of the host functions
      exposed by the pallet
      f2645eec
  18. Feb 22, 2024