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Merge pull request #66 from BP-WG/store
Abstract wallet persistence with external persistence providers
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,127 @@ | ||
| // Modern, minimalistic & standard-compliant cold wallet library. | ||
| // | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
| // | ||
| // Written in 2020-2024 by | ||
| // Dr Maxim Orlovsky <[email protected]> | ||
| // | ||
| // Copyright (C) 2020-2024 LNP/BP Standards Association. All rights reserved. | ||
| // Copyright (C) 2020-2024 Dr Maxim Orlovsky. All rights reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| use std::path::PathBuf; | ||
| use std::{fs, io}; | ||
|
|
||
| use descriptors::Descriptor; | ||
| use nonasync::persistence::{PersistenceError, PersistenceProvider}; | ||
|
|
||
| use super::*; | ||
| use crate::{ | ||
| Layer2Cache, Layer2Data, Layer2Descriptor, NoLayer2, WalletCache, WalletData, WalletDescr, | ||
| }; | ||
|
|
||
| #[derive(Clone, Eq, PartialEq, Debug)] | ||
| pub struct FsTextStore { | ||
| pub descr: PathBuf, | ||
| pub data: PathBuf, | ||
| pub cache: PathBuf, | ||
| pub l2: PathBuf, | ||
| } | ||
|
|
||
| impl FsTextStore { | ||
| pub fn new(path: PathBuf) -> io::Result<Self> { | ||
| fs::create_dir_all(&path)?; | ||
|
|
||
| let mut descr = path.clone(); | ||
| descr.push("descriptor.toml"); | ||
| let mut data = path.clone(); | ||
| data.push("data.toml"); | ||
| let mut cache = path.clone(); | ||
| cache.push("cache.yaml"); | ||
| let mut l2 = path; | ||
| l2.push("layer2.yaml"); | ||
|
|
||
| Ok(Self { | ||
| descr, | ||
| data, | ||
| cache, | ||
| l2, | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| impl<K, D: Descriptor<K>, L2: Layer2Descriptor> PersistenceProvider<WalletDescr<K, D, L2>> | ||
| for FsTextStore | ||
| where | ||
| for<'de> WalletDescr<K, D, L2>: serde::Serialize + serde::Deserialize<'de>, | ||
| for<'de> D: serde::Serialize + serde::Deserialize<'de>, | ||
| for<'de> L2: serde::Serialize + serde::Deserialize<'de>, | ||
| { | ||
| fn load(&self) -> Result<WalletDescr<K, D, L2>, PersistenceError> { | ||
| let descr = fs::read_to_string(&self.descr).map_err(PersistenceError::with)?; | ||
| toml::from_str(&descr).map_err(PersistenceError::with) | ||
| } | ||
|
|
||
| fn store(&self, object: &WalletDescr<K, D, L2>) -> Result<(), PersistenceError> { | ||
| let s = toml::to_string_pretty(object).map_err(PersistenceError::with)?; | ||
| fs::write(&self.descr, s).map_err(PersistenceError::with)?; | ||
| Ok(()) | ||
| } | ||
| } | ||
|
|
||
| impl<L2: Layer2Cache> PersistenceProvider<WalletCache<L2>> for FsTextStore | ||
| where | ||
| for<'de> WalletCache<L2>: serde::Serialize + serde::Deserialize<'de>, | ||
| for<'de> L2: serde::Serialize + serde::Deserialize<'de>, | ||
| { | ||
| fn load(&self) -> Result<WalletCache<L2>, PersistenceError> { | ||
| let file = fs::File::open(&self.cache).map_err(PersistenceError::with)?; | ||
| serde_yaml::from_reader(file).map_err(PersistenceError::with) | ||
| } | ||
|
|
||
| fn store(&self, object: &WalletCache<L2>) -> Result<(), PersistenceError> { | ||
| let file = fs::File::create(&self.cache).map_err(PersistenceError::with)?; | ||
| serde_yaml::to_writer(file, object).map_err(PersistenceError::with)?; | ||
| Ok(()) | ||
| } | ||
| } | ||
|
|
||
| impl<L2: Layer2Data> PersistenceProvider<WalletData<L2>> for FsTextStore | ||
| where | ||
| for<'de> WalletData<L2>: serde::Serialize + serde::Deserialize<'de>, | ||
| for<'de> L2: serde::Serialize + serde::Deserialize<'de>, | ||
| { | ||
| fn load(&self) -> Result<WalletData<L2>, PersistenceError> { | ||
| let data = fs::read_to_string(&self.data).map_err(PersistenceError::with)?; | ||
| toml::from_str(&data).map_err(PersistenceError::with) | ||
| } | ||
|
|
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| fn store(&self, object: &WalletData<L2>) -> Result<(), PersistenceError> { | ||
| let s = toml::to_string_pretty(object).map_err(PersistenceError::with)?; | ||
| fs::write(&self.data, s).map_err(PersistenceError::with)?; | ||
| Ok(()) | ||
| } | ||
| } | ||
|
|
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| impl PersistenceProvider<NoLayer2> for FsTextStore { | ||
| fn load(&self) -> Result<NoLayer2, PersistenceError> { | ||
| // Nothing to do | ||
| Ok(none!()) | ||
| } | ||
|
|
||
| fn store(&self, _: &NoLayer2) -> Result<(), PersistenceError> { | ||
| // Nothing to do | ||
| Ok(()) | ||
| } | ||
| } |
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