mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
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Tomasz Drwięga
858940050a
* Initial version of call dispatch. * cargo fmt --all * Remove unused stuff. * cargo fmt --all * weight is part of msg + events * should_fail_on_weight_mismatch * plug into runtime * cargo fmt --all * fix benchmarks compilation? * expected/actual values in events * return actual weight from MessageDispatch::dispatch() * MessageOrigin -> InstanceId + move bridge_account_id to bp-runtime * fix benchmarks again * cargo fmt --all * clippy Co-authored-by: Svyatoslav Nikolsky <svyatonik@gmail.com>
47 lines
2.0 KiB
Rust
47 lines
2.0 KiB
Rust
// Copyright 2019-2020 Parity Technologies (UK) Ltd.
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// This file is part of Parity Bridges Common.
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// Parity Bridges Common 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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// Parity Bridges Common 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 Parity Bridges Common. If not, see <http://www.gnu.org/licenses/>.
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//! Primitives that may be used at (bridges) runtime level.
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#![cfg_attr(not(feature = "std"), no_std)]
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use codec::{Decode, Encode};
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use sp_io::hashing::blake2_256;
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/// Call-dispatch module prefix.
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pub const CALL_DISPATCH_MODULE_PREFIX: &[u8] = b"pallet-bridge/call-dispatch";
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/// Id of deployed module instance. We have a bunch of pallets that may be used in
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/// different bridges. E.g. message-lane pallet may be deployed twice in the same
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/// runtime to bridge ThisChain with Chain1 and Chain2. Sometimes we need to be able
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/// to identify deployed instance dynamically. This type is used for that.
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pub type InstanceId = [u8; 4];
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/// Returns id of account that acts as "system" account of given bridge instance.
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/// The `module_prefix` (arbitrary slice) may be used to generate module-level
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/// "system" account, so you could have separate "system" accounts for currency
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/// exchange, message dispatch and other modules.
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///
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/// The account is not supposed to actually exists on the chain, or to have any funds.
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/// It is only used to
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pub fn bridge_account_id<AccountId>(bridge: InstanceId, module_prefix: &[u8]) -> AccountId
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where
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AccountId: Decode + Default,
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{
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let entropy = (module_prefix, bridge).using_encoded(blake2_256);
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AccountId::decode(&mut &entropy[..]).unwrap_or_default()
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}
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