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Simplify the rpcwallet example using the improved keys traits

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This commit is contained in:
Alekos Filini 2022-04-13 12:56:43 +02:00
parent c350064dae
commit 44758f9483
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GPG Key ID: 431401E4A4530061
1 changed files with 13 additions and 17 deletions
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28
examples/rpcwallet.rs
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@ -7,7 +7,6 @@
// licenses.
use bdk::bitcoin::secp256k1::Secp256k1;
use bdk::bitcoin::util::bip32::ExtendedPrivKey;
use bdk::bitcoin::Amount;
use bdk::bitcoin::Network;
use bdk::bitcoincore_rpc::RpcApi;
@ -16,7 +15,7 @@ use bdk::blockchain::rpc::{Auth, RpcBlockchain, RpcConfig};
use bdk::blockchain::ConfigurableBlockchain;
use bdk::keys::bip39::{Language, Mnemonic, WordCount};
use bdk::keys::{DerivableKey, ExtendedKey, GeneratableKey, GeneratedKey};
use bdk::keys::{DerivableKey, GeneratableKey, GeneratedKey};
use bdk::miniscript::miniscript::Segwitv0;
@ -85,8 +84,8 @@ fn main() -> Result<(), Box<dyn Error>> {
// create unique wallet name.
// This is a special utility function exposed via `bdk::wallet_name_from_descriptor()`
let wallet_name = wallet_name_from_descriptor(
Bip84(xprv, KeychainKind::External),
Some(Bip84(xprv, KeychainKind::Internal)),
Bip84(xprv.clone(), KeychainKind::External),
Some(Bip84(xprv.clone(), KeychainKind::Internal)),
Network::Regtest,
&Secp256k1::new(),
)?;
@ -112,8 +111,8 @@ fn main() -> Result<(), Box<dyn Error>> {
// Combine Database + Descriptor to create the final wallet
let wallet = Wallet::new(
Bip84(xprv, KeychainKind::External),
Some(Bip84(xprv, KeychainKind::Internal)),
Bip84(xprv.clone(), KeychainKind::External),
Some(Bip84(xprv.clone(), KeychainKind::Internal)),
Network::Regtest,
database,
)?;
@ -216,18 +215,15 @@ fn main() -> Result<(), Box<dyn Error>> {
// Helper function demonstrating privatekey extraction using bip39 mnemonic
// The mnemonic can be shown to user to safekeeping and the same wallet
// private descriptors can be recreated from it.
fn generate_random_ext_privkey() -> Result<ExtendedPrivKey, Box<dyn Error>> {
fn generate_random_ext_privkey() -> Result<impl DerivableKey<Segwitv0> + Clone, Box<dyn Error>> {
// a Bip39 passphrase can be set optionally
let password = Some("random password".to_string());
// Generate a random mnemonic, and use that to create an Extended PrivateKey
let mnemonic: GeneratedKey<_, Segwitv0> =
Mnemonic::generate((WordCount::Words12, Language::English))
// Generate a random mnemonic, and use that to create a "DerivableKey"
let mnemonic: GeneratedKey<_, _> = Mnemonic::generate((WordCount::Words12, Language::English))
.map_err(|e| e.expect("Unknown Error"))?;
let mnemonic = mnemonic.into_key();
let xkey: ExtendedKey = (mnemonic, password).into_extended_key()?;
let xprv = xkey
.into_xprv(Network::Regtest)
.expect("Expected Private Key");
Ok(xprv)
// `Ok(mnemonic)` would also work if there's no passphrase and it would
// yield the same result as this construct with `password` = `None`.
Ok((mnemonic, password))
}