mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-05-07 21:18:01 +00:00
Robert Habermeier
68 lines
2.2 KiB
Rust
68 lines
2.2 KiB
Rust
// Copyright 2019 Parity Technologies (UK) Ltd.
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// This file is part of Substrate.
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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 Substrate. If not, see <http://www.gnu.org/licenses/>.
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//! Substrate core types around sessions.
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#![cfg_attr(not(feature = "std"), no_std)]
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use rstd::vec::Vec;
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#[cfg(feature = "std")]
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use sr_primitives::traits::{ProvideRuntimeApi, Block as BlockT};
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#[cfg(feature = "std")]
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use primitives::{H256, Blake2Hasher};
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client::decl_runtime_apis! {
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/// Session keys runtime api.
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pub trait SessionKeys {
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/// Generate a set of session keys with optionally using the given seed.
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/// The keys should be stored within the keystore exposed via runtime
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/// externalities.
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///
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/// The seed needs to be a valid `utf8` string.
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///
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/// Returns the concatenated SCALE encoded public keys.
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fn generate_session_keys(seed: Option<Vec<u8>>) -> Vec<u8>;
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}
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}
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/// Generate the initial session keys with the given seeds and store them in
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/// the client's keystore.
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#[cfg(feature = "std")]
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pub fn generate_initial_session_keys<B, E, Block, RA>(
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client: std::sync::Arc<client::Client<B, E, Block, RA>>,
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seeds: Vec<String>,
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) -> Result<(), client::error::Error>
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where
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B: client::backend::Backend<Block, Blake2Hasher>,
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E: client::CallExecutor<Block, Blake2Hasher>,
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Block: BlockT<Hash=H256>,
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client::Client<B, E, Block, RA>: ProvideRuntimeApi,
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<client::Client<B, E, Block, RA> as ProvideRuntimeApi>::Api: SessionKeys<Block>,
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{
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let info = client.info().chain;
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let runtime_api = client.runtime_api();
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for seed in seeds {
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runtime_api.generate_session_keys(
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&sr_primitives::generic::BlockId::Number(info.best_number),
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Some(seed.as_bytes().to_vec()),
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)?;
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}
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Ok(())
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}
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