mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
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Proof of concept: Add a new runtime that uses pallet_contracts (#186)
* seal: Copy over a legacy version of pallet_contracts from substrate * seal: Fix substrate dependency pathes and add as dependency to runtime * seal: Adapt pallet to current substrate version * seal: Add contracts pallet to runtime * seal: Implement rpc runtime api * seal: Update to latest rpc output format * seal: Replace child trie by prefix trie * seal: Add contracts endpoint to the client * seal: fixup rpc test * Fix whitespace issue Co-authored-by: Sergei Shulepov <sergei@parity.io> * seal: Move pallet out of the runtime directory * seal: Create a seperate runtime for contracts * Move parachains to top level directory * seal: Disable rent for easier testing Co-authored-by: Sergei Shulepov <sergei@parity.io>
This commit is contained in:
Alexander Theißen
committed by
GitHub
GitHub
parent
9e28ea67b6
commit
bda46b0b07
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[package]
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name = 'cumulus-test-parachain-runtime'
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version = '0.1.0'
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authors = ["Parity Technologies <admin@parity.io>"]
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edition = '2018'
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[dependencies]
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serde = { version = "1.0.101", optional = true, features = ["derive"] }
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codec = { package = "parity-scale-codec", version = "1.3.0", default-features = false, features = ["derive"] }
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# Substrate dependencies
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sp-std = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
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sp-api = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
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sp-io = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
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sp-version = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
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sp-runtime = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
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sp-core = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
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sp-session = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
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sp-offchain = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
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sp-block-builder = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
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sp-transaction-pool = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
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sp-inherents = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
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frame-support = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
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frame-executive = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
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frame-system = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
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pallet-balances = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
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pallet-randomness-collective-flip = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
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pallet-timestamp = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
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pallet-sudo = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
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pallet-transaction-payment = { git = "https://github.com/paritytech/substrate", default-features = false, branch = "rococo-branch" }
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# Cumulus dependencies
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cumulus-runtime = { path = "../../runtime", default-features = false }
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cumulus-parachain-upgrade = { path = "../../parachain-upgrade", default-features = false }
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cumulus-message-broker = { path = "../../message-broker", default-features = false }
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cumulus-upward-message = { path = "../../upward-message", default-features = false }
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cumulus-primitives = { path = "../../primitives", default-features = false }
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# Polkadot dependencies
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polkadot-parachain = { git = "https://github.com/paritytech/polkadot", branch = "rococo-branch", default-features = false }
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[build-dependencies]
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wasm-builder-runner = { package = "substrate-wasm-builder-runner", version = "1.0.6" }
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[features]
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default = [ "std" ]
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std = [
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"codec/std",
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"serde",
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"sp-api/std",
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"sp-std/std",
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"sp-io/std",
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"sp-core/std",
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"sp-runtime/std",
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"sp-version/std",
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"sp-offchain/std",
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"sp-session/std",
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"sp-block-builder/std",
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"sp-transaction-pool/std",
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"sp-inherents/std",
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"frame-support/std",
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"frame-executive/std",
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"frame-system/std",
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"pallet-balances/std",
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"pallet-randomness-collective-flip/std",
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"pallet-timestamp/std",
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"pallet-sudo/std",
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"pallet-transaction-payment/std",
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"cumulus-runtime/std",
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"cumulus-parachain-upgrade/std",
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"cumulus-message-broker/std",
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"cumulus-upward-message/std",
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"cumulus-primitives/std",
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"polkadot-parachain/std",
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]
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# Will be enabled by the `wasm-builder` when building the runtime for WASM.
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runtime-wasm = [
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"cumulus-upward-message/runtime-wasm",
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]
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// Copyright 2019 Parity Technologies (UK) Ltd.
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// This file is part of Cumulus.
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// Substrate is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Substrate is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Cumulus. If not, see <http://www.gnu.org/licenses/>.
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use wasm_builder_runner::WasmBuilder;
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fn main() {
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WasmBuilder::new()
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.with_current_project()
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.with_wasm_builder_from_crates("2.0.0")
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.export_heap_base()
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.import_memory()
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.build()
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}
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@@ -0,0 +1,390 @@
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// Copyright 2019 Parity Technologies (UK) Ltd.
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// This file is part of Cumulus.
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// Cumulus is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Cumulus is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Cumulus. If not, see <http://www.gnu.org/licenses/>.
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#![cfg_attr(not(feature = "std"), no_std)]
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// `construct_runtime!` does a lot of recursion and requires us to increase the limit to 256.
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#![recursion_limit = "256"]
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// Make the WASM binary available.
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#[cfg(feature = "std")]
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include!(concat!(env!("OUT_DIR"), "/wasm_binary.rs"));
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use sp_api::impl_runtime_apis;
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use sp_core::OpaqueMetadata;
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use sp_runtime::{
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create_runtime_str, generic, impl_opaque_keys,
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traits::{BlakeTwo256, Block as BlockT, IdentifyAccount, IdentityLookup, Saturating, Verify},
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transaction_validity::{TransactionSource, TransactionValidity},
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ApplyExtrinsicResult, MultiSignature,
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};
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use sp_std::prelude::*;
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#[cfg(feature = "std")]
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use sp_version::NativeVersion;
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use sp_version::RuntimeVersion;
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mod message_example;
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// A few exports that help ease life for downstream crates.
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pub use frame_support::{
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construct_runtime, parameter_types,
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traits::Randomness,
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weights::{constants::WEIGHT_PER_SECOND, IdentityFee, Weight},
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StorageValue,
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};
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pub use pallet_balances::Call as BalancesCall;
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pub use pallet_timestamp::Call as TimestampCall;
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#[cfg(any(feature = "std", test))]
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pub use sp_runtime::BuildStorage;
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pub use sp_runtime::{Perbill, Permill};
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/// An index to a block.
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pub type BlockNumber = u32;
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/// Alias to 512-bit hash when used in the context of a transaction signature on the chain.
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pub type Signature = MultiSignature;
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/// Some way of identifying an account on the chain. We intentionally make it equivalent
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/// to the public key of our transaction signing scheme.
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pub type AccountId = <<Signature as Verify>::Signer as IdentifyAccount>::AccountId;
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/// The type for looking up accounts. We don't expect more than 4 billion of them, but you
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/// never know...
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pub type AccountIndex = u32;
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/// Balance of an account.
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pub type Balance = u128;
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/// Index of a transaction in the chain.
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pub type Index = u32;
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/// A hash of some data used by the chain.
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pub type Hash = sp_core::H256;
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/// Digest item type.
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pub type DigestItem = generic::DigestItem<Hash>;
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/// Opaque types. These are used by the CLI to instantiate machinery that don't need to know
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/// the specifics of the runtime. They can then be made to be agnostic over specific formats
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/// of data like extrinsics, allowing for them to continue syncing the network through upgrades
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/// to even the core datastructures.
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pub mod opaque {
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use super::*;
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pub use sp_runtime::OpaqueExtrinsic as UncheckedExtrinsic;
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/// Opaque block header type.
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pub type Header = generic::Header<BlockNumber, BlakeTwo256>;
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/// Opaque block type.
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pub type Block = generic::Block<Header, UncheckedExtrinsic>;
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/// Opaque block identifier type.
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pub type BlockId = generic::BlockId<Block>;
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pub type SessionHandlers = ();
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impl_opaque_keys! {
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pub struct SessionKeys {}
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}
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}
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/// This runtime version.
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pub const VERSION: RuntimeVersion = RuntimeVersion {
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spec_name: create_runtime_str!("cumulus-test-parachain"),
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impl_name: create_runtime_str!("cumulus-test-parachain"),
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authoring_version: 1,
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spec_version: 1,
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impl_version: 1,
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apis: RUNTIME_API_VERSIONS,
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transaction_version: 1,
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};
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pub const MILLISECS_PER_BLOCK: u64 = 6000;
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pub const SLOT_DURATION: u64 = MILLISECS_PER_BLOCK;
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pub const EPOCH_DURATION_IN_BLOCKS: u32 = 10 * MINUTES;
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// These time units are defined in number of blocks.
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pub const MINUTES: BlockNumber = 60_000 / (MILLISECS_PER_BLOCK as BlockNumber);
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pub const HOURS: BlockNumber = MINUTES * 60;
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pub const DAYS: BlockNumber = HOURS * 24;
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// 1 in 4 blocks (on average, not counting collisions) will be primary babe blocks.
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pub const PRIMARY_PROBABILITY: (u64, u64) = (1, 4);
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#[derive(codec::Encode, codec::Decode)]
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pub enum XCMPMessage<XAccountId, XBalance> {
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/// Transfer tokens to the given account from the Parachain account.
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TransferToken(XAccountId, XBalance),
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}
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/// The version infromation used to identify this runtime when compiled natively.
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#[cfg(feature = "std")]
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pub fn native_version() -> NativeVersion {
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NativeVersion {
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runtime_version: VERSION,
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can_author_with: Default::default(),
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}
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}
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parameter_types! {
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pub const BlockHashCount: BlockNumber = 250;
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pub const MaximumBlockWeight: Weight = 2 * WEIGHT_PER_SECOND;
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/// Assume 10% of weight for average on_initialize calls.
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pub MaximumExtrinsicWeight: Weight = AvailableBlockRatio::get()
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.saturating_sub(Perbill::from_percent(10)) * MaximumBlockWeight::get();
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pub const AvailableBlockRatio: Perbill = Perbill::from_percent(75);
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pub const MaximumBlockLength: u32 = 5 * 1024 * 1024;
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pub const Version: RuntimeVersion = VERSION;
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pub const ExtrinsicBaseWeight: Weight = 10_000_000;
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}
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impl frame_system::Trait for Runtime {
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/// The identifier used to distinguish between accounts.
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type AccountId = AccountId;
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/// The aggregated dispatch type that is available for extrinsics.
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type Call = Call;
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/// The lookup mechanism to get account ID from whatever is passed in dispatchers.
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type Lookup = IdentityLookup<AccountId>;
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/// The index type for storing how many extrinsics an account has signed.
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type Index = Index;
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/// The index type for blocks.
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type BlockNumber = BlockNumber;
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/// The type for hashing blocks and tries.
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type Hash = Hash;
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/// The hashing algorithm used.
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type Hashing = BlakeTwo256;
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/// The header type.
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type Header = generic::Header<BlockNumber, BlakeTwo256>;
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/// The ubiquitous event type.
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type Event = Event;
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/// The ubiquitous origin type.
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type Origin = Origin;
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/// Maximum number of block number to block hash mappings to keep (oldest pruned first).
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type BlockHashCount = BlockHashCount;
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/// Maximum weight of each block. With a default weight system of 1byte == 1weight, 4mb is ok.
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type MaximumBlockWeight = MaximumBlockWeight;
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/// Maximum size of all encoded transactions (in bytes) that are allowed in one block.
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type MaximumBlockLength = MaximumBlockLength;
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/// Portion of the block weight that is available to all normal transactions.
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type AvailableBlockRatio = AvailableBlockRatio;
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/// Runtime version.
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type Version = Version;
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/// Converts a module to an index of this module in the runtime.
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type ModuleToIndex = ModuleToIndex;
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type AccountData = pallet_balances::AccountData<Balance>;
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type OnNewAccount = ();
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type OnKilledAccount = ();
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type DbWeight = ();
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type ExtrinsicBaseWeight = ExtrinsicBaseWeight;
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type BlockExecutionWeight = ();
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type MaximumExtrinsicWeight = MaximumExtrinsicWeight;
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type BaseCallFilter = ();
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type SystemWeightInfo = ();
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}
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parameter_types! {
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pub const MinimumPeriod: u64 = SLOT_DURATION / 2;
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}
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impl pallet_timestamp::Trait for Runtime {
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/// A timestamp: milliseconds since the unix epoch.
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type Moment = u64;
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type OnTimestampSet = ();
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type MinimumPeriod = MinimumPeriod;
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type WeightInfo = ();
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}
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parameter_types! {
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pub const ExistentialDeposit: u128 = 500;
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pub const TransferFee: u128 = 0;
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pub const CreationFee: u128 = 0;
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pub const TransactionByteFee: u128 = 1;
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}
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impl pallet_balances::Trait for Runtime {
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/// The type for recording an account's balance.
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type Balance = Balance;
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/// The ubiquitous event type.
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type Event = Event;
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type DustRemoval = ();
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type ExistentialDeposit = ExistentialDeposit;
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type AccountStore = System;
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type WeightInfo = ();
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}
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impl pallet_transaction_payment::Trait for Runtime {
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type Currency = Balances;
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type OnTransactionPayment = ();
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type TransactionByteFee = TransactionByteFee;
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type WeightToFee = IdentityFee<Balance>;
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type FeeMultiplierUpdate = ();
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}
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impl pallet_sudo::Trait for Runtime {
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type Call = Call;
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type Event = Event;
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}
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impl cumulus_parachain_upgrade::Trait for Runtime {
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type Event = Event;
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type OnValidationFunctionParams = ();
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}
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parameter_types! {
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pub storage ParachainId: cumulus_primitives::ParaId = 100.into();
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}
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impl cumulus_message_broker::Trait for Runtime {
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type Event = Event;
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type DownwardMessageHandlers = TokenDealer;
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type UpwardMessage = cumulus_upward_message::RococoUpwardMessage;
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type ParachainId = ParachainId;
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type XCMPMessage = XCMPMessage<AccountId, Balance>;
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type XCMPMessageHandlers = TokenDealer;
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}
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impl message_example::Trait for Runtime {
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type Event = Event;
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type UpwardMessageSender = MessageBroker;
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type UpwardMessage = cumulus_upward_message::RococoUpwardMessage;
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type Currency = Balances;
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type XCMPMessageSender = MessageBroker;
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}
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construct_runtime! {
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pub enum Runtime where
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Block = Block,
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NodeBlock = opaque::Block,
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UncheckedExtrinsic = UncheckedExtrinsic
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{
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System: frame_system::{Module, Call, Storage, Config, Event<T>},
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Timestamp: pallet_timestamp::{Module, Call, Storage, Inherent},
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Balances: pallet_balances::{Module, Call, Storage, Config<T>, Event<T>},
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Sudo: pallet_sudo::{Module, Call, Storage, Config<T>, Event<T>},
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RandomnessCollectiveFlip: pallet_randomness_collective_flip::{Module, Call, Storage},
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ParachainUpgrade: cumulus_parachain_upgrade::{Module, Call, Storage, Inherent, Event},
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MessageBroker: cumulus_message_broker::{Module, Call, Inherent, Event<T>},
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TokenDealer: message_example::{Module, Call, Event<T>, Config},
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TransactionPayment: pallet_transaction_payment::{Module, Storage},
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}
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}
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/// The address format for describing accounts.
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pub type Address = AccountId;
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/// Block header type as expected by this runtime.
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pub type Header = generic::Header<BlockNumber, BlakeTwo256>;
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/// Block type as expected by this runtime.
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pub type Block = generic::Block<Header, UncheckedExtrinsic>;
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/// A Block signed with a Justification
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pub type SignedBlock = generic::SignedBlock<Block>;
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/// BlockId type as expected by this runtime.
|
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pub type BlockId = generic::BlockId<Block>;
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/// The SignedExtension to the basic transaction logic.
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pub type SignedExtra = (
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frame_system::CheckSpecVersion<Runtime>,
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frame_system::CheckGenesis<Runtime>,
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frame_system::CheckEra<Runtime>,
|
||||
frame_system::CheckNonce<Runtime>,
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||||
frame_system::CheckWeight<Runtime>,
|
||||
pallet_transaction_payment::ChargeTransactionPayment<Runtime>,
|
||||
);
|
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/// Unchecked extrinsic type as expected by this runtime.
|
||||
pub type UncheckedExtrinsic = generic::UncheckedExtrinsic<Address, Call, Signature, SignedExtra>;
|
||||
/// Extrinsic type that has already been checked.
|
||||
pub type CheckedExtrinsic = generic::CheckedExtrinsic<AccountId, Call, SignedExtra>;
|
||||
/// Executive: handles dispatch to the various modules.
|
||||
pub type Executive = frame_executive::Executive<
|
||||
Runtime,
|
||||
Block,
|
||||
frame_system::ChainContext<Runtime>,
|
||||
Runtime,
|
||||
AllModules,
|
||||
>;
|
||||
|
||||
impl_runtime_apis! {
|
||||
impl sp_api::Core<Block> for Runtime {
|
||||
fn version() -> RuntimeVersion {
|
||||
VERSION
|
||||
}
|
||||
|
||||
fn execute_block(block: Block) {
|
||||
Executive::execute_block(block)
|
||||
}
|
||||
|
||||
fn initialize_block(header: &<Block as BlockT>::Header) {
|
||||
Executive::initialize_block(header)
|
||||
}
|
||||
}
|
||||
|
||||
impl sp_api::Metadata<Block> for Runtime {
|
||||
fn metadata() -> OpaqueMetadata {
|
||||
Runtime::metadata().into()
|
||||
}
|
||||
}
|
||||
|
||||
impl sp_block_builder::BlockBuilder<Block> for Runtime {
|
||||
fn apply_extrinsic(
|
||||
extrinsic: <Block as BlockT>::Extrinsic,
|
||||
) -> ApplyExtrinsicResult {
|
||||
Executive::apply_extrinsic(extrinsic)
|
||||
}
|
||||
|
||||
fn finalize_block() -> <Block as BlockT>::Header {
|
||||
Executive::finalize_block()
|
||||
}
|
||||
|
||||
fn inherent_extrinsics(data: sp_inherents::InherentData) -> Vec<<Block as BlockT>::Extrinsic> {
|
||||
data.create_extrinsics()
|
||||
}
|
||||
|
||||
fn check_inherents(block: Block, data: sp_inherents::InherentData) -> sp_inherents::CheckInherentsResult {
|
||||
data.check_extrinsics(&block)
|
||||
}
|
||||
|
||||
fn random_seed() -> <Block as BlockT>::Hash {
|
||||
RandomnessCollectiveFlip::random_seed()
|
||||
}
|
||||
}
|
||||
|
||||
impl sp_transaction_pool::runtime_api::TaggedTransactionQueue<Block> for Runtime {
|
||||
fn validate_transaction(
|
||||
source: TransactionSource,
|
||||
tx: <Block as BlockT>::Extrinsic,
|
||||
) -> TransactionValidity {
|
||||
Executive::validate_transaction(source, tx)
|
||||
}
|
||||
}
|
||||
|
||||
impl sp_offchain::OffchainWorkerApi<Block> for Runtime {
|
||||
fn offchain_worker(header: &<Block as BlockT>::Header) {
|
||||
Executive::offchain_worker(header)
|
||||
}
|
||||
}
|
||||
|
||||
impl sp_session::SessionKeys<Block> for Runtime {
|
||||
fn decode_session_keys(
|
||||
encoded: Vec<u8>,
|
||||
) -> Option<Vec<(Vec<u8>, sp_core::crypto::KeyTypeId)>> {
|
||||
opaque::SessionKeys::decode_into_raw_public_keys(&encoded)
|
||||
}
|
||||
|
||||
fn generate_session_keys(seed: Option<Vec<u8>>) -> Vec<u8> {
|
||||
opaque::SessionKeys::generate(seed)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
cumulus_runtime::register_validate_block!(Block, Executive);
|
||||
@@ -0,0 +1,179 @@
|
||||
// Copyright 2020 Parity Technologies (UK) Ltd.
|
||||
// This file is part of Cumulus.
|
||||
|
||||
// Cumulus is free software: you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation, either version 3 of the License, or
|
||||
// (at your option) any later version.
|
||||
|
||||
// Cumulus is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
|
||||
// You should have received a copy of the GNU General Public License
|
||||
// along with Cumulus. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
//! Example Pallet that shows how to send upward messages and how to receive
|
||||
//! downward messages.
|
||||
|
||||
use frame_support::{
|
||||
decl_event, decl_module, decl_storage,
|
||||
traits::{Currency, ExistenceRequirement, WithdrawReason},
|
||||
};
|
||||
use frame_system::ensure_signed;
|
||||
|
||||
use crate::XCMPMessage;
|
||||
use codec::{Decode, Encode};
|
||||
use cumulus_primitives::{
|
||||
relay_chain::DownwardMessage,
|
||||
xcmp::{XCMPMessageHandler, XCMPMessageSender},
|
||||
DownwardMessageHandler, ParaId, UpwardMessageOrigin, UpwardMessageSender,
|
||||
};
|
||||
use cumulus_upward_message::BalancesMessage;
|
||||
use polkadot_parachain::primitives::AccountIdConversion;
|
||||
use sp_runtime::DispatchResult;
|
||||
|
||||
type BalanceOf<T> =
|
||||
<<T as Trait>::Currency as Currency<<T as frame_system::Trait>::AccountId>>::Balance;
|
||||
|
||||
/// Configuration trait of this pallet.
|
||||
pub trait Trait: frame_system::Trait {
|
||||
/// Event type used by the runtime.
|
||||
type Event: From<Event<Self>> + Into<<Self as frame_system::Trait>::Event>;
|
||||
|
||||
/// The sender of upward messages.
|
||||
type UpwardMessageSender: UpwardMessageSender<Self::UpwardMessage>;
|
||||
|
||||
/// The upward message type used by the Parachain runtime.
|
||||
type UpwardMessage: codec::Codec + BalancesMessage<Self::AccountId, BalanceOf<Self>>;
|
||||
|
||||
/// Currency of the runtime.
|
||||
type Currency: Currency<Self::AccountId>;
|
||||
|
||||
/// The sender of XCMP messages.
|
||||
type XCMPMessageSender: XCMPMessageSender<XCMPMessage<Self::AccountId, BalanceOf<Self>>>;
|
||||
}
|
||||
|
||||
// This pallet's storage items.
|
||||
decl_storage! {
|
||||
trait Store for Module<T: Trait> as ParachainUpgrade {}
|
||||
add_extra_genesis {
|
||||
config(parachain_id): ParaId;
|
||||
build(|config: &Self| {
|
||||
// This is basically a hack to make the parachain id easily configurable.
|
||||
// Could also be done differently, but yeah..
|
||||
crate::ParachainId::set(&config.parachain_id);
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
decl_event! {
|
||||
pub enum Event<T> where
|
||||
AccountId = <T as frame_system::Trait>::AccountId,
|
||||
Balance = BalanceOf<T>
|
||||
{
|
||||
/// Transferred tokens to the account on the relay chain.
|
||||
TransferredTokensToRelayChain(AccountId, Balance),
|
||||
/// Transferred tokens to the account on request from the relay chain.
|
||||
TransferredTokensFromRelayChain(AccountId, Balance),
|
||||
/// Transferred tokens to the account from the given parachain account.
|
||||
TransferredTokensViaXCMP(ParaId, AccountId, Balance, DispatchResult),
|
||||
}
|
||||
}
|
||||
|
||||
decl_module! {
|
||||
pub struct Module<T: Trait> for enum Call where origin: T::Origin, system = frame_system {
|
||||
/// Transfer `amount` of tokens on the relay chain from the Parachain account to
|
||||
/// the given `dest` account.
|
||||
#[weight = 10]
|
||||
fn transfer_tokens_to_relay_chain(origin, dest: T::AccountId, amount: BalanceOf<T>) {
|
||||
let who = ensure_signed(origin)?;
|
||||
|
||||
let _ = T::Currency::withdraw(
|
||||
&who,
|
||||
amount,
|
||||
WithdrawReason::Transfer.into(),
|
||||
ExistenceRequirement::AllowDeath,
|
||||
)?;
|
||||
|
||||
let msg = <T as Trait>::UpwardMessage::transfer(dest.clone(), amount.clone());
|
||||
<T as Trait>::UpwardMessageSender::send_upward_message(&msg, UpwardMessageOrigin::Signed)
|
||||
.expect("Should not fail; qed");
|
||||
|
||||
Self::deposit_event(Event::<T>::TransferredTokensToRelayChain(dest, amount));
|
||||
}
|
||||
|
||||
/// Transfer `amount` of tokens to another parachain.
|
||||
#[weight = 10]
|
||||
fn transfer_tokens_to_parachain_chain(
|
||||
origin,
|
||||
para_id: u32,
|
||||
dest: T::AccountId,
|
||||
amount: BalanceOf<T>,
|
||||
) {
|
||||
//TODO we don't make sure that the parachain has some tokens on the other parachain.
|
||||
let who = ensure_signed(origin)?;
|
||||
|
||||
let _ = T::Currency::withdraw(
|
||||
&who,
|
||||
amount,
|
||||
WithdrawReason::Transfer.into(),
|
||||
ExistenceRequirement::AllowDeath,
|
||||
)?;
|
||||
|
||||
T::XCMPMessageSender::send_xcmp_message(
|
||||
para_id.into(),
|
||||
&XCMPMessage::TransferToken(dest, amount),
|
||||
).expect("Should not fail; qed");
|
||||
}
|
||||
|
||||
fn deposit_event() = default;
|
||||
}
|
||||
}
|
||||
|
||||
/// This is a hack to convert from one generic type to another where we are sure that both are the
|
||||
/// same type/use the same encoding.
|
||||
fn convert_hack<O: Decode>(input: &impl Encode) -> O {
|
||||
input.using_encoded(|e| Decode::decode(&mut &e[..]).expect("Must be compatible; qed"))
|
||||
}
|
||||
|
||||
impl<T: Trait> DownwardMessageHandler for Module<T> {
|
||||
fn handle_downward_message(msg: &DownwardMessage) {
|
||||
match msg {
|
||||
DownwardMessage::TransferInto(dest, amount, _) => {
|
||||
let dest = convert_hack(&dest);
|
||||
let amount: BalanceOf<T> = convert_hack(amount);
|
||||
|
||||
let _ = T::Currency::deposit_creating(&dest, amount.clone());
|
||||
|
||||
Self::deposit_event(Event::<T>::TransferredTokensFromRelayChain(dest, amount));
|
||||
}
|
||||
_ => {}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: Trait> XCMPMessageHandler<XCMPMessage<T::AccountId, BalanceOf<T>>> for Module<T> {
|
||||
fn handle_xcmp_message(src: ParaId, msg: &XCMPMessage<T::AccountId, BalanceOf<T>>) {
|
||||
match msg {
|
||||
XCMPMessage::TransferToken(dest, amount) => {
|
||||
let para_account = src.clone().into_account();
|
||||
|
||||
let res = T::Currency::transfer(
|
||||
¶_account,
|
||||
dest,
|
||||
amount.clone(),
|
||||
ExistenceRequirement::AllowDeath,
|
||||
);
|
||||
|
||||
Self::deposit_event(Event::<T>::TransferredTokensViaXCMP(
|
||||
src,
|
||||
dest.clone(),
|
||||
amount.clone(),
|
||||
res,
|
||||
));
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user