mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-26 02:57:57 +00:00
Gavin Wood
fd5f9292f5
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: georgepisaltu <george.pisaltu@parity.io> Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> Signed-off-by: dependabot[bot] <support@github.com> Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io> Signed-off-by: Alexandru Gheorghe <alexandru.gheorghe@parity.io> Signed-off-by: Andrei Sandu <andrei-mihail@parity.io> Co-authored-by: Nikhil Gupta <17176722+gupnik@users.noreply.github.com> Co-authored-by: georgepisaltu <52418509+georgepisaltu@users.noreply.github.com> Co-authored-by: Chevdor <chevdor@users.noreply.github.com> Co-authored-by: Bastian Köcher <git@kchr.de> Co-authored-by: Maciej <maciej.zyszkiewicz@parity.io> Co-authored-by: Javier Viola <javier@parity.io> Co-authored-by: Marcin S. <marcin@realemail.net> Co-authored-by: Tsvetomir Dimitrov <tsvetomir@parity.io> Co-authored-by: Javier Bullrich <javier@bullrich.dev> Co-authored-by: Koute <koute@users.noreply.github.com> Co-authored-by: Adrian Catangiu <adrian@parity.io> Co-authored-by: Vladimir Istyufeev <vladimir@parity.io> Co-authored-by: Ross 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Murray <donal.murray@parity.io> Co-authored-by: yjh <yjh465402634@gmail.com> Co-authored-by: Tom Mi <tommi@niemi.lol> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Will | Paradox | ParaNodes.io <79228812+paradox-tt@users.noreply.github.com> Co-authored-by: Bastian Köcher <info@kchr.de> Co-authored-by: Joshy Orndorff <JoshOrndorff@users.noreply.github.com> Co-authored-by: Joshy Orndorff <git-user-email.h0ly5@simplelogin.com> Co-authored-by: PG Herveou <pgherveou@gmail.com> Co-authored-by: Alexander Theißen <alex.theissen@me.com> Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com> Co-authored-by: Juan Girini <juangirini@gmail.com> Co-authored-by: bader y <ibnbassem@gmail.com> Co-authored-by: James Wilson <james@jsdw.me> Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com> Co-authored-by: asynchronous rob <rphmeier@gmail.com> Co-authored-by: Parth <desaiparth08@gmail.com> Co-authored-by: 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102 lines
4.1 KiB
TOML
102 lines
4.1 KiB
TOML
[package]
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name = "bridge-runtime-common"
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version = "0.7.0"
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description = "Common types and functions that may be used by substrate-based runtimes of all bridged chains"
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authors.workspace = true
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edition.workspace = true
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repository.workspace = true
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license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
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[lints]
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workspace = true
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[dependencies]
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codec = { package = "parity-scale-codec", version = "3.1.5", default-features = false, features = ["derive"] }
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hash-db = { version = "0.16.0", default-features = false }
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log = { workspace = true }
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scale-info = { version = "2.10.0", default-features = false, features = ["derive"] }
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static_assertions = { version = "1.1", optional = true }
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# Bridge dependencies
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bp-header-chain = { path = "../../primitives/header-chain", default-features = false }
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bp-messages = { path = "../../primitives/messages", default-features = false }
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bp-parachains = { path = "../../primitives/parachains", default-features = false }
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bp-polkadot-core = { path = "../../primitives/polkadot-core", default-features = false }
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bp-relayers = { path = "../../primitives/relayers", default-features = false }
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bp-runtime = { path = "../../primitives/runtime", default-features = false }
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bp-xcm-bridge-hub = { path = "../../primitives/xcm-bridge-hub", default-features = false }
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bp-xcm-bridge-hub-router = { path = "../../primitives/xcm-bridge-hub-router", default-features = false }
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pallet-bridge-grandpa = { path = "../../modules/grandpa", default-features = false }
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pallet-bridge-messages = { path = "../../modules/messages", default-features = false }
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pallet-bridge-parachains = { path = "../../modules/parachains", default-features = false }
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pallet-bridge-relayers = { path = "../../modules/relayers", default-features = false }
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# Substrate dependencies
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frame-support = { path = "../../../substrate/frame/support", default-features = false }
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frame-system = { path = "../../../substrate/frame/system", default-features = false }
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pallet-transaction-payment = { path = "../../../substrate/frame/transaction-payment", default-features = false }
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pallet-utility = { path = "../../../substrate/frame/utility", default-features = false }
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sp-api = { path = "../../../substrate/primitives/api", default-features = false }
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sp-core = { path = "../../../substrate/primitives/core", default-features = false }
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sp-io = { path = "../../../substrate/primitives/io", default-features = false }
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sp-runtime = { path = "../../../substrate/primitives/runtime", default-features = false }
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sp-std = { path = "../../../substrate/primitives/std", default-features = false }
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sp-trie = { path = "../../../substrate/primitives/trie", default-features = false }
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# Polkadot dependencies
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xcm = { package = "staging-xcm", path = "../../../polkadot/xcm", default-features = false }
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xcm-builder = { package = "staging-xcm-builder", path = "../../../polkadot/xcm/xcm-builder", default-features = false }
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[dev-dependencies]
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bp-test-utils = { path = "../../primitives/test-utils" }
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pallet-balances = { path = "../../../substrate/frame/balances" }
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[features]
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default = ["std"]
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std = [
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"bp-header-chain/std",
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"bp-messages/std",
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"bp-parachains/std",
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"bp-polkadot-core/std",
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"bp-relayers/std",
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"bp-runtime/std",
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"bp-xcm-bridge-hub-router/std",
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"bp-xcm-bridge-hub/std",
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"codec/std",
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"frame-support/std",
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"frame-system/std",
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"hash-db/std",
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"log/std",
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"pallet-bridge-grandpa/std",
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"pallet-bridge-messages/std",
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"pallet-bridge-parachains/std",
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"pallet-bridge-relayers/std",
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"pallet-transaction-payment/std",
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"pallet-utility/std",
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"scale-info/std",
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"sp-api/std",
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"sp-core/std",
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"sp-io/std",
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"sp-runtime/std",
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"sp-std/std",
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"sp-trie/std",
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"xcm-builder/std",
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"xcm/std",
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]
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runtime-benchmarks = [
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"frame-support/runtime-benchmarks",
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"frame-system/runtime-benchmarks",
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"pallet-balances/runtime-benchmarks",
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"pallet-bridge-grandpa/runtime-benchmarks",
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"pallet-bridge-messages/runtime-benchmarks",
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"pallet-bridge-parachains/runtime-benchmarks",
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"pallet-bridge-relayers/runtime-benchmarks",
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"pallet-transaction-payment/runtime-benchmarks",
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"pallet-utility/runtime-benchmarks",
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"sp-runtime/runtime-benchmarks",
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"xcm-builder/runtime-benchmarks",
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]
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integrity-test = ["static_assertions"]
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