4f05441a00
- The KeychainTxOutIndex's internal SpkIterator now uses DescriptorId instead of K. The DescriptorId -> K translation is made at the KeychainTxOutIndex level. - The keychain::Changeset is now a struct, which includes a map for last revealed indexes, and one for newly added keychains and their descriptor. API changes in bdk: - Wallet::keychains returns a `impl Iterator` instead of `BTreeMap` - Wallet::load doesn't take descriptors anymore, since they're stored in the db - Wallet::new_or_load checks if the loaded descriptor from db is the same as the provided one API changes in bdk_chain: - `ChangeSet` is now a struct, which includes a map for last revealed indexes, and one for keychains and descriptors. - `KeychainTxOutIndex::inner` returns a `SpkIterator<(DescriptorId, u32)>` - `KeychainTxOutIndex::outpoints` returns a `impl Iterator` instead of `&BTreeSet` - `KeychainTxOutIndex::keychains` returns a `impl Iterator` instead of `&BTreeMap` - `KeychainTxOutIndex::txouts` doesn't return a ExactSizeIterator anymore - `KeychainTxOutIndex::unbounded_spk_iter` returns an `Option` - `KeychainTxOutIndex::next_index` returns an `Option` - `KeychainTxOutIndex::last_revealed_indices` returns a `BTreeMap` instead of `&BTreeMap` - `KeychainTxOutIndex::reveal_to_target` returns an `Option` - `KeychainTxOutIndex::reveal_next_spk` returns an `Option` - `KeychainTxOutIndex::next_unused_spk` returns an `Option` - `KeychainTxOutIndex::add_keychain` has been renamed to `KeychainTxOutIndex::insert_descriptor`, and now it returns a ChangeSet
45 lines
1.6 KiB
Rust
45 lines
1.6 KiB
Rust
use crate::{
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alloc::{string::ToString, vec::Vec},
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miniscript::{Descriptor, DescriptorPublicKey},
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};
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use bitcoin::hashes::{hash_newtype, sha256, Hash};
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hash_newtype! {
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/// Represents the ID of a descriptor, defined as the sha256 hash of
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/// the descriptor string, checksum excluded.
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///
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/// This is useful for having a fixed-length unique representation of a descriptor,
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/// in particular, we use it to persist application state changes related to the
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/// descriptor without having to re-write the whole descriptor each time.
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///
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pub struct DescriptorId(pub sha256::Hash);
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}
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/// A trait to extend the functionality of a miniscript descriptor.
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pub trait DescriptorExt {
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/// Returns the minimum value (in satoshis) at which an output is broadcastable.
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/// Panics if the descriptor wildcard is hardened.
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fn dust_value(&self) -> u64;
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/// Returns the descriptor id, calculated as the sha256 of the descriptor, checksum not
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/// included.
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fn descriptor_id(&self) -> DescriptorId;
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}
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impl DescriptorExt for Descriptor<DescriptorPublicKey> {
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fn dust_value(&self) -> u64 {
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self.at_derivation_index(0)
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.expect("descriptor can't have hardened derivation")
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.script_pubkey()
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.dust_value()
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.to_sat()
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}
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fn descriptor_id(&self) -> DescriptorId {
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let desc = self.to_string();
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let desc_without_checksum = desc.split('#').next().expect("Must be here");
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let descriptor_bytes = <Vec<u8>>::from(desc_without_checksum.as_bytes());
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DescriptorId(sha256::Hash::hash(&descriptor_bytes))
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}
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}
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