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https://github.com/mimblewimble/grin.git
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d189770080
* Migrate main node store to LMDB In preparation to using LMDB as a wallet database, migrate the node db. There's no point in having 2 key-value stores. In addition LMDB provides a few advantages as a node db, namely a much faster build (compared to RocksDb), lesser dependencies and transactions. * Migrated p2p store to lmdb, stuff compiles * More fixes, chain tests starting to pass * Fixed txhashset rollback messing with block save and general batch delimitation. Chain tests passing. * rustfmt * LMDB max map size of 10MB isn't really workable. Half TB seems reasonable. * Fix wallet tests * Rather crucial commit was missing * rustfmt * Fixing new merged tests following lmdb changes * rustfmt * * Make txhashset validation read-only on fast sync to avoid having a really long open transaction. * Fix deadlock in new block processing, batch should always be created within a txhashset lock (when they interact). * Comment about batch and txhashset interlacing * Fix store tests to use batch * Externalize wallet config and seed * Converted direct read access to file outputs map to an iterator * Cleaned up and simplified wallet Backend trait: * No more direct mutable access to internal structures (HashMap) * Batch interface for all writes * Remove unneeded read wrapper (read_wallet) * rustfmt * First (incomplete) pass at wallet LMDB backend * Progressing on lmdb backent iml * Added batch impl for LMDB wallet backend. Pretty much done with it, but not sure how to deal with commit (owned). * rustfmt * Wrapping LMDB batch around a refcell to work around borrow rules * Compilation up to grin chain
45 lines
1.4 KiB
Rust
45 lines
1.4 KiB
Rust
// Copyright 2018 The Grin Developers
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//! Wallet key management functions
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use keychain::{Identifier, Keychain};
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use libwallet::error::Error;
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use libwallet::types::WalletBackend;
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/// Get next available key in the wallet
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pub fn next_available_key<T, K>(wallet: &mut T) -> Result<(Identifier, u32), Error>
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where
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T: WalletBackend<K>,
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K: Keychain,
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{
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let root_key_id = wallet.keychain().root_key_id();
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let derivation = wallet.next_child(root_key_id.clone())?;
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let key_id = wallet.keychain().derive_key_id(derivation)?;
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Ok((key_id, derivation))
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}
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/// Retrieve an existing key from a wallet
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pub fn retrieve_existing_key<T, K>(
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wallet: &T,
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key_id: Identifier,
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) -> Result<(Identifier, u32), Error>
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where
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T: WalletBackend<K>,
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K: Keychain,
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{
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let existing = wallet.get(&key_id)?;
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let key_id = existing.key_id.clone();
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let derivation = existing.n_child;
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Ok((key_id, derivation))
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}
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