pezkuwichain
b6d35f6faf
Updated 4763 files with dual copyright: - Parity Technologies (UK) Ltd. - Dijital Kurdistan Tech Institute
102 lines
2.6 KiB
Rust
102 lines
2.6 KiB
Rust
// This file is part of Bizinikiwi.
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// Copyright (C) Parity Technologies (UK) Ltd. and Dijital Kurdistan Tech Institute
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// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
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// This program 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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// This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
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//! Bizinikiwi offchain API.
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#[cfg(test)]
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mod tests;
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use self::error::Error;
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use jsonrpsee::{core::async_trait, Extensions};
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use parking_lot::RwLock;
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use pezsc_rpc_api::check_if_safe;
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/// Re-export the API for backward compatibility.
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pub use pezsc_rpc_api::offchain::*;
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use pezsp_core::{
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offchain::{OffchainStorage, StorageKind},
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Bytes,
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};
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use std::sync::Arc;
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/// Offchain API
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#[derive(Debug)]
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pub struct Offchain<T: OffchainStorage> {
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/// Offchain storage
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storage: Arc<RwLock<T>>,
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}
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impl<T: OffchainStorage> Offchain<T> {
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/// Create new instance of Offchain API.
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pub fn new(storage: T) -> Self {
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Offchain { storage: Arc::new(RwLock::new(storage)) }
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}
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}
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#[async_trait]
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impl<T: OffchainStorage + 'static> OffchainApiServer for Offchain<T> {
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fn set_local_storage(
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&self,
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ext: &Extensions,
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kind: StorageKind,
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key: Bytes,
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value: Bytes,
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) -> Result<(), Error> {
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check_if_safe(ext)?;
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let prefix = match kind {
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StorageKind::PERSISTENT => pezsp_offchain::STORAGE_PREFIX,
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StorageKind::LOCAL => return Err(Error::UnavailableStorageKind),
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};
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self.storage.write().set(prefix, &key, &value);
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Ok(())
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}
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fn clear_local_storage(
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&self,
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ext: &Extensions,
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kind: StorageKind,
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key: Bytes,
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) -> Result<(), Error> {
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check_if_safe(ext)?;
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let prefix = match kind {
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StorageKind::PERSISTENT => pezsp_offchain::STORAGE_PREFIX,
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StorageKind::LOCAL => return Err(Error::UnavailableStorageKind),
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};
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self.storage.write().remove(prefix, &key);
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Ok(())
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}
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fn get_local_storage(
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&self,
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ext: &Extensions,
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kind: StorageKind,
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key: Bytes,
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) -> Result<Option<Bytes>, Error> {
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check_if_safe(ext)?;
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let prefix = match kind {
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StorageKind::PERSISTENT => pezsp_offchain::STORAGE_PREFIX,
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StorageKind::LOCAL => return Err(Error::UnavailableStorageKind),
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};
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Ok(self.storage.read().get(prefix, &key).map(Into::into))
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}
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}
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