Merge pull request #1173 from zcash/1171-generalise-batch-runner
zcash_client_backend: Extend `BatchRunner` to support full outputs
This commit is contained in:
commit
121438eaef
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@ -303,7 +303,7 @@ where
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.get_sapling_nullifiers(NullifierQuery::Unspent)
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.map_err(Error::Wallet)?;
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let mut batch_runner = BatchRunner::<_, _, _, ()>::new(
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let mut batch_runner = BatchRunner::<_, _, _, _, ()>::new(
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100,
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dfvks
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.iter()
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@ -8,36 +8,107 @@ use std::sync::{
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};
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use memuse::DynamicUsage;
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use zcash_note_encryption::{batch, BatchDomain, Domain, ShieldedOutput, COMPACT_NOTE_SIZE};
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use zcash_note_encryption::{
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batch, BatchDomain, Domain, ShieldedOutput, COMPACT_NOTE_SIZE, ENC_CIPHERTEXT_SIZE,
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};
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use zcash_primitives::{block::BlockHash, transaction::TxId};
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/// A decrypted note.
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pub(crate) struct DecryptedNote<A, D: Domain> {
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/// A decrypted transaction output.
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pub(crate) struct DecryptedOutput<A, D: Domain, M> {
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/// The tag corresponding to the incoming viewing key used to decrypt the note.
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pub(crate) ivk_tag: A,
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/// The recipient of the note.
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pub(crate) recipient: D::Recipient,
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/// The note!
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pub(crate) note: D::Note,
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/// The memo field, or `()` if this is a decrypted compact output.
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pub(crate) memo: M,
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}
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impl<A, D: Domain> fmt::Debug for DecryptedNote<A, D>
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impl<A, D: Domain, M> fmt::Debug for DecryptedOutput<A, D, M>
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where
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A: fmt::Debug,
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D::IncomingViewingKey: fmt::Debug,
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D::Recipient: fmt::Debug,
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D::Note: fmt::Debug,
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D::Memo: fmt::Debug,
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M: fmt::Debug,
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{
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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f.debug_struct("DecryptedNote")
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f.debug_struct("DecryptedOutput")
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.field("ivk_tag", &self.ivk_tag)
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.field("recipient", &self.recipient)
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.field("note", &self.note)
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.field("memo", &self.memo)
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.finish()
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}
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}
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/// A decryptor of transaction outputs.
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pub(crate) trait Decryptor<D: BatchDomain, Output> {
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type Memo;
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// Once we reach MSRV 1.75.0, this can return `impl Iterator`.
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fn batch_decrypt<A: Clone>(
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tags: &[A],
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ivks: &[D::IncomingViewingKey],
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outputs: &[(D, Output)],
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) -> Vec<Option<DecryptedOutput<A, D, Self::Memo>>>;
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}
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/// A decryptor of outputs as encoded in transactions.
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pub(crate) struct FullDecryptor;
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impl<D: BatchDomain, Output: ShieldedOutput<D, ENC_CIPHERTEXT_SIZE>> Decryptor<D, Output>
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for FullDecryptor
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{
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type Memo = D::Memo;
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fn batch_decrypt<A: Clone>(
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tags: &[A],
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ivks: &[D::IncomingViewingKey],
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outputs: &[(D, Output)],
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) -> Vec<Option<DecryptedOutput<A, D, Self::Memo>>> {
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batch::try_note_decryption(ivks, outputs)
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.into_iter()
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.map(|res| {
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res.map(|((note, recipient, memo), ivk_idx)| DecryptedOutput {
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ivk_tag: tags[ivk_idx].clone(),
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recipient,
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note,
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memo,
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})
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})
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.collect()
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}
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}
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/// A decryptor of outputs as encoded in compact blocks.
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pub(crate) struct CompactDecryptor;
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impl<D: BatchDomain, Output: ShieldedOutput<D, COMPACT_NOTE_SIZE>> Decryptor<D, Output>
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for CompactDecryptor
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{
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type Memo = ();
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fn batch_decrypt<A: Clone>(
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tags: &[A],
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ivks: &[D::IncomingViewingKey],
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outputs: &[(D, Output)],
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) -> Vec<Option<DecryptedOutput<A, D, Self::Memo>>> {
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batch::try_compact_note_decryption(ivks, outputs)
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.into_iter()
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.map(|res| {
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res.map(|((note, recipient), ivk_idx)| DecryptedOutput {
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ivk_tag: tags[ivk_idx].clone(),
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recipient,
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note,
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memo: (),
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})
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})
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.collect()
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}
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}
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/// A value correlated with an output index.
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struct OutputIndex<V> {
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/// The index of the output within the corresponding shielded bundle.
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@ -46,12 +117,12 @@ struct OutputIndex<V> {
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value: V,
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}
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type OutputItem<A, D> = OutputIndex<DecryptedNote<A, D>>;
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type OutputItem<A, D, M> = OutputIndex<DecryptedOutput<A, D, M>>;
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/// The sender for the result of batch scanning a specific transaction output.
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struct OutputReplier<A, D: Domain>(OutputIndex<channel::Sender<OutputItem<A, D>>>);
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struct OutputReplier<A, D: Domain, M>(OutputIndex<channel::Sender<OutputItem<A, D, M>>>);
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impl<A, D: Domain> DynamicUsage for OutputReplier<A, D> {
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impl<A, D: Domain, M> DynamicUsage for OutputReplier<A, D, M> {
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#[inline(always)]
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fn dynamic_usage(&self) -> usize {
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// We count the memory usage of items in the channel on the receiver side.
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@ -65,9 +136,9 @@ impl<A, D: Domain> DynamicUsage for OutputReplier<A, D> {
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}
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/// The receiver for the result of batch scanning a specific transaction.
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struct BatchReceiver<A, D: Domain>(channel::Receiver<OutputItem<A, D>>);
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struct BatchReceiver<A, D: Domain, M>(channel::Receiver<OutputItem<A, D, M>>);
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impl<A, D: Domain> DynamicUsage for BatchReceiver<A, D> {
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impl<A, D: Domain, M> DynamicUsage for BatchReceiver<A, D, M> {
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fn dynamic_usage(&self) -> usize {
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// We count the memory usage of items in the channel on the receiver side.
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let num_items = self.0.len();
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@ -84,7 +155,7 @@ impl<A, D: Domain> DynamicUsage for BatchReceiver<A, D> {
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// - Space for an item.
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// - The state of the slot, stored as an AtomicUsize.
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const PTR_SIZE: usize = std::mem::size_of::<usize>();
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let item_size = std::mem::size_of::<OutputItem<A, D>>();
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let item_size = std::mem::size_of::<OutputItem<A, D, M>>();
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const ATOMIC_USIZE_SIZE: usize = std::mem::size_of::<AtomicUsize>();
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let block_size = PTR_SIZE + ITEMS_PER_BLOCK * (item_size + ATOMIC_USIZE_SIZE);
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@ -208,7 +279,7 @@ impl<Item: Task> Task for WithUsageTask<Item> {
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}
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/// A batch of outputs to trial decrypt.
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pub(crate) struct Batch<A, D: BatchDomain, Output: ShieldedOutput<D, COMPACT_NOTE_SIZE>> {
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pub(crate) struct Batch<A, D: BatchDomain, Output, Dec: Decryptor<D, Output>> {
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tags: Vec<A>,
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ivks: Vec<D::IncomingViewingKey>,
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/// We currently store outputs and repliers as parallel vectors, because
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@ -219,15 +290,16 @@ pub(crate) struct Batch<A, D: BatchDomain, Output: ShieldedOutput<D, COMPACT_NOT
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/// all be part of the same struct, which would also track the output index
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/// (that is captured in the outer `OutputIndex` of each `OutputReplier`).
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outputs: Vec<(D, Output)>,
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repliers: Vec<OutputReplier<A, D>>,
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repliers: Vec<OutputReplier<A, D, Dec::Memo>>,
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}
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impl<A, D, Output> DynamicUsage for Batch<A, D, Output>
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impl<A, D, Output, Dec> DynamicUsage for Batch<A, D, Output, Dec>
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where
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A: DynamicUsage,
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D: BatchDomain + DynamicUsage,
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D::IncomingViewingKey: DynamicUsage,
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Output: ShieldedOutput<D, COMPACT_NOTE_SIZE> + DynamicUsage,
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Output: DynamicUsage,
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Dec: Decryptor<D, Output>,
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{
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fn dynamic_usage(&self) -> usize {
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self.tags.dynamic_usage()
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@ -253,11 +325,11 @@ where
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}
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}
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impl<A, D, Output> Batch<A, D, Output>
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impl<A, D, Output, Dec> Batch<A, D, Output, Dec>
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where
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A: Clone,
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D: BatchDomain,
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Output: ShieldedOutput<D, COMPACT_NOTE_SIZE>,
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Dec: Decryptor<D, Output>,
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{
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/// Constructs a new batch.
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fn new(tags: Vec<A>, ivks: Vec<D::IncomingViewingKey>) -> Self {
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@ -276,7 +348,7 @@ where
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}
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}
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impl<A, D, Output> Task for Batch<A, D, Output>
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impl<A, D, Output, Dec> Task for Batch<A, D, Output, Dec>
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where
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A: Clone + Send + 'static,
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D: BatchDomain + Send + 'static,
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@ -284,7 +356,9 @@ where
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D::Memo: Send,
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D::Note: Send,
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D::Recipient: Send,
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Output: ShieldedOutput<D, COMPACT_NOTE_SIZE> + Send + 'static,
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Output: Send + 'static,
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Dec: Decryptor<D, Output> + 'static,
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Dec::Memo: Send,
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{
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/// Runs the batch of trial decryptions, and reports the results.
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fn run(self) {
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@ -298,20 +372,16 @@ where
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assert_eq!(outputs.len(), repliers.len());
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let decryption_results = batch::try_compact_note_decryption(&ivks, &outputs);
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let decryption_results = Dec::batch_decrypt(&tags, &ivks, &outputs);
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for (decryption_result, OutputReplier(replier)) in
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decryption_results.into_iter().zip(repliers.into_iter())
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{
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// If `decryption_result` is `None` then we will just drop `replier`,
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// indicating to the parent `BatchRunner` that this output was not for us.
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if let Some(((note, recipient), ivk_idx)) = decryption_result {
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if let Some(value) = decryption_result {
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let result = OutputIndex {
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output_index: replier.output_index,
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value: DecryptedNote {
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ivk_tag: tags[ivk_idx].clone(),
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recipient,
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note,
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},
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value,
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};
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if replier.value.send(result).is_err() {
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@ -323,7 +393,12 @@ where
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}
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}
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impl<A, D: BatchDomain, Output: ShieldedOutput<D, COMPACT_NOTE_SIZE> + Clone> Batch<A, D, Output> {
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impl<A, D, Output, Dec> Batch<A, D, Output, Dec>
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where
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D: BatchDomain,
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Output: Clone,
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Dec: Decryptor<D, Output>,
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{
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/// Adds the given outputs to this batch.
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///
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/// `replier` will be called with the result of every output.
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@ -331,7 +406,7 @@ impl<A, D: BatchDomain, Output: ShieldedOutput<D, COMPACT_NOTE_SIZE> + Clone> Ba
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&mut self,
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domain: impl Fn() -> D,
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outputs: &[Output],
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replier: channel::Sender<OutputItem<A, D>>,
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replier: channel::Sender<OutputItem<A, D, Dec::Memo>>,
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) {
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self.outputs
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.extend(outputs.iter().cloned().map(|output| (domain(), output)));
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|
@ -361,28 +436,29 @@ impl DynamicUsage for ResultKey {
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}
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/// Logic to run batches of trial decryptions on the global threadpool.
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pub(crate) struct BatchRunner<A, D, Output, T>
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pub(crate) struct BatchRunner<A, D, Output, Dec, T>
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where
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D: BatchDomain,
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Output: ShieldedOutput<D, COMPACT_NOTE_SIZE>,
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T: Tasks<Batch<A, D, Output>>,
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Dec: Decryptor<D, Output>,
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T: Tasks<Batch<A, D, Output, Dec>>,
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{
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batch_size_threshold: usize,
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// The batch currently being accumulated.
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acc: Batch<A, D, Output>,
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acc: Batch<A, D, Output, Dec>,
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// The running batches.
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running_tasks: T,
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// Receivers for the results of the running batches.
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pending_results: HashMap<ResultKey, BatchReceiver<A, D>>,
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pending_results: HashMap<ResultKey, BatchReceiver<A, D, Dec::Memo>>,
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}
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impl<A, D, Output, T> DynamicUsage for BatchRunner<A, D, Output, T>
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impl<A, D, Output, Dec, T> DynamicUsage for BatchRunner<A, D, Output, Dec, T>
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where
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A: DynamicUsage,
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D: BatchDomain + DynamicUsage,
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D::IncomingViewingKey: DynamicUsage,
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Output: ShieldedOutput<D, COMPACT_NOTE_SIZE> + DynamicUsage,
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T: Tasks<Batch<A, D, Output>> + DynamicUsage,
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Output: DynamicUsage,
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Dec: Decryptor<D, Output>,
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T: Tasks<Batch<A, D, Output, Dec>> + DynamicUsage,
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{
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fn dynamic_usage(&self) -> usize {
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self.acc.dynamic_usage()
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|
@ -408,12 +484,12 @@ where
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}
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}
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impl<A, D, Output, T> BatchRunner<A, D, Output, T>
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impl<A, D, Output, Dec, T> BatchRunner<A, D, Output, Dec, T>
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where
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A: Clone,
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D: BatchDomain,
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Output: ShieldedOutput<D, COMPACT_NOTE_SIZE>,
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T: Tasks<Batch<A, D, Output>>,
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Dec: Decryptor<D, Output>,
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T: Tasks<Batch<A, D, Output, Dec>>,
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{
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/// Constructs a new batch runner for the given incoming viewing keys.
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pub(crate) fn new(
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|
@ -430,7 +506,7 @@ where
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}
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}
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impl<A, D, Output, T> BatchRunner<A, D, Output, T>
|
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impl<A, D, Output, Dec, T> BatchRunner<A, D, Output, Dec, T>
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where
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A: Clone + Send + 'static,
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D: BatchDomain + Send + 'static,
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|
@ -438,8 +514,9 @@ where
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D::Memo: Send,
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D::Note: Send,
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D::Recipient: Send,
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Output: ShieldedOutput<D, COMPACT_NOTE_SIZE> + Clone + Send + 'static,
|
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T: Tasks<Batch<A, D, Output>>,
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Output: Clone + Send + 'static,
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Dec: Decryptor<D, Output>,
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T: Tasks<Batch<A, D, Output, Dec>>,
|
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{
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/// Batches the given outputs for trial decryption.
|
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///
|
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|
@ -447,9 +524,9 @@ where
|
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/// batch, or the all-zeros hash to indicate that no block triggered it (i.e. it was a
|
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/// mempool change).
|
||||
///
|
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/// If after adding the given outputs, the accumulated batch size is at least
|
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/// `BATCH_SIZE_THRESHOLD`, `Self::flush` is called. Subsequent calls to
|
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/// `Self::add_outputs` will be accumulated into a new batch.
|
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/// If after adding the given outputs, the accumulated batch size is at least the size
|
||||
/// threshold that was set via `Self::new`, `Self::flush` is called. Subsequent calls
|
||||
/// to `Self::add_outputs` will be accumulated into a new batch.
|
||||
pub(crate) fn add_outputs(
|
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&mut self,
|
||||
block_tag: BlockHash,
|
||||
|
@ -487,7 +564,7 @@ where
|
|||
&mut self,
|
||||
block_tag: BlockHash,
|
||||
txid: TxId,
|
||||
) -> HashMap<(TxId, usize), DecryptedNote<A, D>> {
|
||||
) -> HashMap<(TxId, usize), DecryptedOutput<A, D, Dec::Memo>> {
|
||||
self.pending_results
|
||||
.remove(&ResultKey(block_tag, txid))
|
||||
// We won't have a pending result if the transaction didn't have outputs of
|
||||
|
|
|
@ -21,7 +21,7 @@ use zcash_primitives::{
|
|||
use crate::data_api::{BlockMetadata, ScannedBlock, ScannedBundles};
|
||||
use crate::{
|
||||
proto::compact_formats::CompactBlock,
|
||||
scan::{Batch, BatchRunner, Tasks},
|
||||
scan::{Batch, BatchRunner, CompactDecryptor, Tasks},
|
||||
wallet::{WalletSaplingOutput, WalletSaplingSpend, WalletTx},
|
||||
ShieldedProtocol,
|
||||
};
|
||||
|
@ -268,9 +268,10 @@ pub fn scan_block<P: consensus::Parameters + Send + 'static, K: ScanningKey>(
|
|||
)
|
||||
}
|
||||
|
||||
type TaggedBatch<S> = Batch<(AccountId, S), SaplingDomain, CompactOutputDescription>;
|
||||
type TaggedBatch<S> =
|
||||
Batch<(AccountId, S), SaplingDomain, CompactOutputDescription, CompactDecryptor>;
|
||||
type TaggedBatchRunner<S, T> =
|
||||
BatchRunner<(AccountId, S), SaplingDomain, CompactOutputDescription, T>;
|
||||
BatchRunner<(AccountId, S), SaplingDomain, CompactOutputDescription, CompactDecryptor, T>;
|
||||
|
||||
#[tracing::instrument(skip_all, fields(height = block.height))]
|
||||
pub(crate) fn add_block_to_runner<P, S, T>(
|
||||
|
@ -524,13 +525,13 @@ pub(crate) fn scan_block_with_runner<
|
|||
let mut decrypted = runner.collect_results(cur_hash, txid);
|
||||
(0..decoded.len())
|
||||
.map(|i| {
|
||||
decrypted.remove(&(txid, i)).map(|d_note| {
|
||||
let a = d_note.ivk_tag.0;
|
||||
let nk = vks.get(&d_note.ivk_tag).expect(
|
||||
decrypted.remove(&(txid, i)).map(|d_out| {
|
||||
let a = d_out.ivk_tag.0;
|
||||
let nk = vks.get(&d_out.ivk_tag).expect(
|
||||
"The batch runner and scan_block must use the same set of IVKs.",
|
||||
);
|
||||
|
||||
(d_note.note, a, d_note.ivk_tag.1, (*nk).clone())
|
||||
(d_out.note, a, d_out.ivk_tag.1, (*nk).clone())
|
||||
})
|
||||
})
|
||||
.collect()
|
||||
|
@ -834,7 +835,7 @@ mod tests {
|
|||
assert_eq!(cb.vtx.len(), 2);
|
||||
|
||||
let mut batch_runner = if scan_multithreaded {
|
||||
let mut runner = BatchRunner::<_, _, _, ()>::new(
|
||||
let mut runner = BatchRunner::<_, _, _, _, ()>::new(
|
||||
10,
|
||||
dfvk.to_sapling_keys()
|
||||
.iter()
|
||||
|
@ -921,7 +922,7 @@ mod tests {
|
|||
assert_eq!(cb.vtx.len(), 3);
|
||||
|
||||
let mut batch_runner = if scan_multithreaded {
|
||||
let mut runner = BatchRunner::<_, _, _, ()>::new(
|
||||
let mut runner = BatchRunner::<_, _, _, _, ()>::new(
|
||||
10,
|
||||
dfvk.to_sapling_keys()
|
||||
.iter()
|
||||
|
|
Loading…
Reference in New Issue