fix(state): Fix minute-long delays in block verification after a chain fork (#6122)
* Split Chain fields into sections * Replace Chain.sprout_note_commitment_tree with a lookup method * Add TODOs * Show full debug info when tests fail because chains aren't equal * Print sprout and sapling tree Nodes as hex when debugging * Correctly revert temporary finalized tip trees and anchors * Fix tests * Refactor removal functions * Replace the Chain.sapling_note_commitment_tree field with a lookup method * Replace the Chain.orchard_note_commitment_tree field with a lookup method * Replace the Chain.history_tree field with a lookup method and remove redundant code * Update comments * Ignore clippy::unwrap_in_result * Remove redundant fork() Result * Put conditional code in blocks * fastmod history_tree_at_tip history_block_commitment_tree zebra-state
This commit is contained in:
parent
09faf48e1f
commit
9452487c61
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@ -169,9 +169,15 @@ impl ZcashDeserialize for Root {
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///
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/// Note that it's handled as a byte buffer and not a point coordinate (jubjub::Fq)
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/// because that's how the spec handles the MerkleCRH^Sapling function inputs and outputs.
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#[derive(Copy, Clone, Debug, Eq, PartialEq)]
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#[derive(Copy, Clone, Eq, PartialEq)]
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struct Node([u8; 32]);
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impl fmt::Debug for Node {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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f.debug_tuple("Node").field(&hex::encode(self.0)).finish()
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}
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}
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/// Required to convert [`NoteCommitmentTree`] into [`SerializedTree`].
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///
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/// Zebra stores Sapling note commitment trees as [`Frontier`][1]s while the
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@ -15,13 +15,13 @@ use std::{fmt, ops::Deref};
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use byteorder::{BigEndian, ByteOrder};
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use incrementalmerkletree::{bridgetree, Frontier};
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use lazy_static::lazy_static;
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use sha2::digest::generic_array::GenericArray;
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use thiserror::Error;
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use super::commitment::NoteCommitment;
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#[cfg(any(test, feature = "proptest-impl"))]
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use proptest_derive::Arbitrary;
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use sha2::digest::generic_array::GenericArray;
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/// Sprout note commitment trees have a max depth of 29.
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///
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@ -127,9 +127,15 @@ impl From<&Root> for [u8; 32] {
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}
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/// A node of the Sprout note commitment tree.
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#[derive(Clone, Debug)]
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#[derive(Clone, Copy, Eq, PartialEq)]
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struct Node([u8; 32]);
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impl fmt::Debug for Node {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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f.debug_tuple("Node").field(&hex::encode(self.0)).finish()
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}
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}
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impl incrementalmerkletree::Hashable for Node {
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/// Returns an empty leaf.
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fn empty_leaf() -> Self {
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@ -10,10 +10,8 @@ use std::{
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use zebra_chain::{
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block::{self, Block},
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history_tree::HistoryTree,
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orchard,
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parameters::Network,
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sapling, sprout, transparent,
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sprout, transparent,
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};
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use crate::{
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@ -157,13 +155,7 @@ impl NonFinalizedState {
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let parent_hash = prepared.block.header.previous_block_hash;
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let (height, hash) = (prepared.height, prepared.hash);
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let parent_chain = self.parent_chain(
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parent_hash,
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finalized_state.sprout_note_commitment_tree(),
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finalized_state.sapling_note_commitment_tree(),
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finalized_state.orchard_note_commitment_tree(),
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finalized_state.history_tree(),
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)?;
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let parent_chain = self.parent_chain(parent_hash)?;
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// If the block is invalid, return the error,
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// and drop the cloned parent Arc, or newly created chain fork.
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@ -185,13 +177,23 @@ impl NonFinalizedState {
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/// Commit block to the non-finalized state as a new chain where its parent
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/// is the finalized tip.
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#[tracing::instrument(level = "debug", skip(self, finalized_state, prepared))]
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#[allow(clippy::unwrap_in_result)]
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pub fn commit_new_chain(
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&mut self,
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prepared: PreparedBlock,
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finalized_state: &ZebraDb,
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) -> Result<(), ValidateContextError> {
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let finalized_tip_height = finalized_state.finalized_tip_height();
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// TODO: fix tests that don't initialize the finalized state
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#[cfg(not(test))]
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let finalized_tip_height = finalized_tip_height.expect("finalized state contains blocks");
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#[cfg(test)]
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let finalized_tip_height = finalized_tip_height.unwrap_or(zebra_chain::block::Height(0));
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let chain = Chain::new(
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self.network,
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finalized_tip_height,
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finalized_state.sprout_note_commitment_tree(),
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finalized_state.sapling_note_commitment_tree(),
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finalized_state.orchard_note_commitment_tree(),
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@ -279,7 +281,7 @@ impl NonFinalizedState {
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// Clone function arguments for different threads
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let block = contextual.block.clone();
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let network = new_chain.network();
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let history_tree = new_chain.history_tree.clone();
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let history_tree = new_chain.history_block_commitment_tree();
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let block2 = contextual.block.clone();
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let height = contextual.height;
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@ -435,7 +437,10 @@ impl NonFinalizedState {
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/// Returns `true` if the best chain contains `sapling_nullifier`.
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#[cfg(test)]
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pub fn best_contains_sapling_nullifier(&self, sapling_nullifier: &sapling::Nullifier) -> bool {
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pub fn best_contains_sapling_nullifier(
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&self,
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sapling_nullifier: &zebra_chain::sapling::Nullifier,
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) -> bool {
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self.best_chain()
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.map(|best_chain| best_chain.sapling_nullifiers.contains(sapling_nullifier))
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.unwrap_or(false)
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@ -443,7 +448,10 @@ impl NonFinalizedState {
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/// Returns `true` if the best chain contains `orchard_nullifier`.
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#[cfg(test)]
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pub fn best_contains_orchard_nullifier(&self, orchard_nullifier: &orchard::Nullifier) -> bool {
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pub fn best_contains_orchard_nullifier(
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&self,
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orchard_nullifier: &zebra_chain::orchard::Nullifier,
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) -> bool {
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self.best_chain()
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.map(|best_chain| best_chain.orchard_nullifiers.contains(orchard_nullifier))
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.unwrap_or(false)
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@ -456,19 +464,12 @@ impl NonFinalizedState {
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/// Return the chain whose tip block hash is `parent_hash`.
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///
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/// The chain can be an existing chain in the non-finalized state or a freshly
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/// created fork, if needed.
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///
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/// The trees must be the trees of the finalized tip.
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/// They are used to recreate the trees if a fork is needed.
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/// The chain can be an existing chain in the non-finalized state, or a freshly
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/// created fork.
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#[allow(clippy::unwrap_in_result)]
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fn parent_chain(
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&mut self,
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parent_hash: block::Hash,
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sprout_note_commitment_tree: Arc<sprout::tree::NoteCommitmentTree>,
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sapling_note_commitment_tree: Arc<sapling::tree::NoteCommitmentTree>,
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orchard_note_commitment_tree: Arc<orchard::tree::NoteCommitmentTree>,
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history_tree: Arc<HistoryTree>,
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) -> Result<Arc<Chain>, ValidateContextError> {
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match self.find_chain(|chain| chain.non_finalized_tip_hash() == parent_hash) {
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// Clone the existing Arc<Chain> in the non-finalized state
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@ -480,18 +481,7 @@ impl NonFinalizedState {
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let fork_chain = self
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.chain_set
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.iter()
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.find_map(|chain| {
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chain
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.fork(
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parent_hash,
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sprout_note_commitment_tree.clone(),
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sapling_note_commitment_tree.clone(),
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orchard_note_commitment_tree.clone(),
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history_tree.clone(),
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)
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.transpose()
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})
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.transpose()?
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.find_map(|chain| chain.fork(parent_hash))
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.ok_or(ValidateContextError::NotReadyToBeCommitted)?;
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Ok(Arc::new(fork_chain))
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File diff suppressed because it is too large
Load Diff
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@ -6,7 +6,7 @@ use zebra_test::prelude::*;
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use zebra_chain::{
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amount::NonNegative,
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block::{self, arbitrary::allow_all_transparent_coinbase_spends, Block},
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block::{self, arbitrary::allow_all_transparent_coinbase_spends, Block, Height},
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fmt::DisplayToDebug,
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history_tree::{HistoryTree, NonEmptyHistoryTree},
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parameters::NetworkUpgrade::*,
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@ -47,7 +47,7 @@ fn push_genesis_chain() -> Result<()> {
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|((chain, count, network, empty_tree) in PreparedChain::default())| {
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prop_assert!(empty_tree.is_none());
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let mut only_chain = Chain::new(network, Default::default(), Default::default(), Default::default(), empty_tree, ValueBalance::zero());
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let mut only_chain = Chain::new(network, Height(0), Default::default(), Default::default(), Default::default(), empty_tree, ValueBalance::zero());
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// contains the block value pool changes and chain value pool balances for each height
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let mut chain_values = BTreeMap::new();
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@ -99,7 +99,7 @@ fn push_history_tree_chain() -> Result<()> {
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let count = std::cmp::min(count, chain.len() - 1);
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let chain = &chain[1..];
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let mut only_chain = Chain::new(network, Default::default(), Default::default(), Default::default(), finalized_tree, ValueBalance::zero());
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let mut only_chain = Chain::new(network, Height(0), Default::default(), Default::default(), Default::default(), finalized_tree, ValueBalance::zero());
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for block in chain
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.iter()
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@ -143,6 +143,7 @@ fn forked_equals_pushed_genesis() -> Result<()> {
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// correspond to the blocks in the original chain before the fork.
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let mut partial_chain = Chain::new(
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network,
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Height(0),
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Default::default(),
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Default::default(),
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Default::default(),
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@ -162,10 +163,11 @@ fn forked_equals_pushed_genesis() -> Result<()> {
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// This chain will be forked.
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let mut full_chain = Chain::new(
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network,
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Height(0),
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Default::default(),
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Default::default(),
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Default::default(),
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empty_tree.clone(),
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empty_tree,
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ValueBalance::zero(),
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);
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for block in chain.iter().cloned() {
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@ -195,18 +197,12 @@ fn forked_equals_pushed_genesis() -> Result<()> {
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}
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// Use [`fork_at_count`] as the fork tip.
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let fork_tip_hash = chain[fork_at_count - 1].hash;
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let fork_tip_height = fork_at_count - 1;
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let fork_tip_hash = chain[fork_tip_height].hash;
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// Fork the chain.
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let mut forked = full_chain
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.fork(
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fork_tip_hash,
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Default::default(),
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Default::default(),
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Default::default(),
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empty_tree,
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)
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.expect("fork works")
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.fork(fork_tip_hash)
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.expect("hash is present");
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// This check is redundant, but it's useful for debugging.
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@ -254,8 +250,8 @@ fn forked_equals_pushed_history_tree() -> Result<()> {
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// use `fork_at_count` as the fork tip
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let fork_tip_hash = chain[fork_at_count - 1].hash;
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let mut full_chain = Chain::new(network, Default::default(), Default::default(), Default::default(), finalized_tree.clone(), ValueBalance::zero());
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let mut partial_chain = Chain::new(network, Default::default(), Default::default(), Default::default(), finalized_tree.clone(), ValueBalance::zero());
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let mut full_chain = Chain::new(network, Height(0), Default::default(), Default::default(), Default::default(), finalized_tree.clone(), ValueBalance::zero());
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let mut partial_chain = Chain::new(network, Height(0), Default::default(), Default::default(), Default::default(), finalized_tree, ValueBalance::zero());
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for block in chain
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.iter()
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@ -271,14 +267,7 @@ fn forked_equals_pushed_history_tree() -> Result<()> {
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}
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let mut forked = full_chain
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.fork(
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fork_tip_hash,
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Default::default(),
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Default::default(),
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Default::default(),
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finalized_tree,
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)
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.expect("fork works")
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.fork(fork_tip_hash)
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.expect("hash is present");
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// the first check is redundant, but it's useful for debugging
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|
@ -318,14 +307,17 @@ fn finalized_equals_pushed_genesis() -> Result<()> {
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prop_assert!(empty_tree.is_none());
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// TODO: fix this test or the code so the full_chain temporary trees aren't overwritten
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let chain = chain.iter().filter(|block| block.height != Height(0));
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// use `end_count` as the number of non-finalized blocks at the end of the chain
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let finalized_count = chain.len() - end_count;
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let finalized_count = chain.clone().count() - end_count;
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let fake_value_pool = ValueBalance::<NonNegative>::fake_populated_pool();
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let mut full_chain = Chain::new(network, Default::default(), Default::default(), Default::default(), empty_tree, fake_value_pool);
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let mut full_chain = Chain::new(network, Height(0), Default::default(), Default::default(), Default::default(), empty_tree, fake_value_pool);
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for block in chain
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.iter()
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.clone()
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.take(finalized_count)
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.map(ContextuallyValidBlock::test_with_zero_spent_utxos) {
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full_chain = full_chain.push(block)?;
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|
@ -333,21 +325,21 @@ fn finalized_equals_pushed_genesis() -> Result<()> {
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let mut partial_chain = Chain::new(
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network,
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full_chain.sprout_note_commitment_tree.clone(),
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full_chain.sapling_note_commitment_tree.clone(),
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full_chain.orchard_note_commitment_tree.clone(),
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full_chain.history_tree.clone(),
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full_chain.non_finalized_tip_height(),
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full_chain.sprout_note_commitment_tree(),
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full_chain.sapling_note_commitment_tree(),
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full_chain.orchard_note_commitment_tree(),
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full_chain.history_block_commitment_tree(),
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full_chain.chain_value_pools,
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);
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for block in chain
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.iter()
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.clone()
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.skip(finalized_count)
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.map(ContextuallyValidBlock::test_with_zero_spent_utxos) {
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partial_chain = partial_chain.push(block.clone())?;
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}
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for block in chain
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.iter()
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.skip(finalized_count)
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.map(ContextuallyValidBlock::test_with_zero_spent_utxos) {
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full_chain = full_chain.push(block.clone())?;
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|
@ -357,8 +349,18 @@ fn finalized_equals_pushed_genesis() -> Result<()> {
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full_chain.pop_root();
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}
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|
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// Make sure the temporary trees from finalized tip forks are removed.
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// TODO: update the test or the code so this extra step isn't needed?
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full_chain.pop_root();
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partial_chain.pop_root();
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prop_assert_eq!(full_chain.blocks.len(), partial_chain.blocks.len());
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prop_assert!(full_chain.eq_internal_state(&partial_chain));
|
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prop_assert!(
|
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full_chain.eq_internal_state(&partial_chain),
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"\n\
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full chain:\n{full_chain:#?}\n\n\
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partial chain:\n{partial_chain:#?}\n",
|
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);
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});
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|
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Ok(())
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|
@ -393,7 +395,7 @@ fn finalized_equals_pushed_history_tree() -> Result<()> {
|
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|
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let fake_value_pool = ValueBalance::<NonNegative>::fake_populated_pool();
|
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|
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let mut full_chain = Chain::new(network, Default::default(), Default::default(), Default::default(), finalized_tree, fake_value_pool);
|
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let mut full_chain = Chain::new(network, Height(0), Default::default(), Default::default(), Default::default(), finalized_tree, fake_value_pool);
|
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for block in chain
|
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.iter()
|
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.take(finalized_count)
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|
@ -403,10 +405,11 @@ fn finalized_equals_pushed_history_tree() -> Result<()> {
|
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|
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let mut partial_chain = Chain::new(
|
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network,
|
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full_chain.sprout_note_commitment_tree.clone(),
|
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full_chain.sapling_note_commitment_tree.clone(),
|
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full_chain.orchard_note_commitment_tree.clone(),
|
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full_chain.history_tree.clone(),
|
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Height(finalized_count.try_into().unwrap()),
|
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full_chain.sprout_note_commitment_tree(),
|
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full_chain.sapling_note_commitment_tree(),
|
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full_chain.orchard_note_commitment_tree(),
|
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full_chain.history_block_commitment_tree(),
|
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full_chain.chain_value_pools,
|
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);
|
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|
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|
@ -428,8 +431,18 @@ fn finalized_equals_pushed_history_tree() -> Result<()> {
|
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full_chain.pop_root();
|
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}
|
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|
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// Make sure the temporary trees from finalized tip forks are removed.
|
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// TODO: update the test or the code so this extra step isn't needed?
|
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full_chain.pop_root();
|
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partial_chain.pop_root();
|
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|
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prop_assert_eq!(full_chain.blocks.len(), partial_chain.blocks.len());
|
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prop_assert!(full_chain.eq_internal_state(&partial_chain));
|
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prop_assert!(
|
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full_chain.eq_internal_state(&partial_chain),
|
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"\n\
|
||||
full chain:\n{full_chain:#?}\n\n\
|
||||
partial chain:\n{partial_chain:#?}\n",
|
||||
);
|
||||
});
|
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|
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Ok(())
|
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|
@ -570,8 +583,8 @@ fn different_blocks_different_chains() -> Result<()> {
|
|||
Default::default()
|
||||
};
|
||||
|
||||
let chain1 = Chain::new(Network::Mainnet, Default::default(), Default::default(), Default::default(), finalized_tree1, ValueBalance::fake_populated_pool());
|
||||
let chain2 = Chain::new(Network::Mainnet, Default::default(), Default::default(), Default::default(), finalized_tree2, ValueBalance::fake_populated_pool());
|
||||
let chain1 = Chain::new(Network::Mainnet, Height(0), Default::default(), Default::default(), Default::default(), finalized_tree1, ValueBalance::fake_populated_pool());
|
||||
let chain2 = Chain::new(Network::Mainnet, Height(0), Default::default(), Default::default(), Default::default(), finalized_tree2, ValueBalance::fake_populated_pool());
|
||||
|
||||
let block1 = vec1[1].clone().prepare().test_with_zero_spent_utxos();
|
||||
let block2 = vec2[1].clone().prepare().test_with_zero_spent_utxos();
|
||||
|
@ -606,16 +619,12 @@ fn different_blocks_different_chains() -> Result<()> {
|
|||
chain1.spent_utxos = chain2.spent_utxos.clone();
|
||||
|
||||
// note commitment trees
|
||||
chain1.sprout_note_commitment_tree = chain2.sprout_note_commitment_tree.clone();
|
||||
chain1.sprout_trees_by_anchor = chain2.sprout_trees_by_anchor.clone();
|
||||
chain1.sprout_trees_by_height = chain2.sprout_trees_by_height.clone();
|
||||
chain1.sapling_note_commitment_tree = chain2.sapling_note_commitment_tree.clone();
|
||||
chain1.sapling_trees_by_height = chain2.sapling_trees_by_height.clone();
|
||||
chain1.orchard_note_commitment_tree = chain2.orchard_note_commitment_tree.clone();
|
||||
chain1.orchard_trees_by_height = chain2.orchard_trees_by_height.clone();
|
||||
|
||||
// history trees
|
||||
chain1.history_tree = chain2.history_tree.clone();
|
||||
chain1.history_trees_by_height = chain2.history_trees_by_height.clone();
|
||||
|
||||
// anchors
|
||||
|
|
|
@ -4,7 +4,7 @@ use std::sync::Arc;
|
|||
|
||||
use zebra_chain::{
|
||||
amount::NonNegative,
|
||||
block::Block,
|
||||
block::{Block, Height},
|
||||
history_tree::NonEmptyHistoryTree,
|
||||
parameters::{Network, NetworkUpgrade},
|
||||
serialization::ZcashDeserializeInto,
|
||||
|
@ -27,6 +27,7 @@ fn construct_empty() {
|
|||
let _init_guard = zebra_test::init();
|
||||
let _chain = Chain::new(
|
||||
Network::Mainnet,
|
||||
Height(0),
|
||||
Default::default(),
|
||||
Default::default(),
|
||||
Default::default(),
|
||||
|
@ -43,6 +44,7 @@ fn construct_single() -> Result<()> {
|
|||
|
||||
let mut chain = Chain::new(
|
||||
Network::Mainnet,
|
||||
Height(0),
|
||||
Default::default(),
|
||||
Default::default(),
|
||||
Default::default(),
|
||||
|
@ -73,6 +75,7 @@ fn construct_many() -> Result<()> {
|
|||
|
||||
let mut chain = Chain::new(
|
||||
Network::Mainnet,
|
||||
Height(block.coinbase_height().unwrap().0 - 1),
|
||||
Default::default(),
|
||||
Default::default(),
|
||||
Default::default(),
|
||||
|
@ -99,6 +102,7 @@ fn ord_matches_work() -> Result<()> {
|
|||
|
||||
let mut lesser_chain = Chain::new(
|
||||
Network::Mainnet,
|
||||
Height(0),
|
||||
Default::default(),
|
||||
Default::default(),
|
||||
Default::default(),
|
||||
|
@ -109,6 +113,7 @@ fn ord_matches_work() -> Result<()> {
|
|||
|
||||
let mut bigger_chain = Chain::new(
|
||||
Network::Mainnet,
|
||||
Height(0),
|
||||
Default::default(),
|
||||
Default::default(),
|
||||
Default::default(),
|
||||
|
@ -434,12 +439,12 @@ fn history_tree_is_updated_for_network_upgrade(
|
|||
let chain = state.best_chain().unwrap();
|
||||
if network_upgrade == NetworkUpgrade::Heartwood {
|
||||
assert!(
|
||||
chain.history_tree.as_ref().is_none(),
|
||||
chain.history_block_commitment_tree().as_ref().is_none(),
|
||||
"history tree must not exist yet"
|
||||
);
|
||||
} else {
|
||||
assert!(
|
||||
chain.history_tree.as_ref().is_some(),
|
||||
chain.history_block_commitment_tree().as_ref().is_some(),
|
||||
"history tree must already exist"
|
||||
);
|
||||
}
|
||||
|
@ -453,11 +458,16 @@ fn history_tree_is_updated_for_network_upgrade(
|
|||
|
||||
let chain = state.best_chain().unwrap();
|
||||
assert!(
|
||||
chain.history_tree.as_ref().is_some(),
|
||||
chain.history_block_commitment_tree().as_ref().is_some(),
|
||||
"history tree must have been (re)created"
|
||||
);
|
||||
assert_eq!(
|
||||
chain.history_tree.as_ref().as_ref().unwrap().size(),
|
||||
chain
|
||||
.history_block_commitment_tree()
|
||||
.as_ref()
|
||||
.as_ref()
|
||||
.unwrap()
|
||||
.size(),
|
||||
1,
|
||||
"history tree must have a single node"
|
||||
);
|
||||
|
@ -466,8 +476,8 @@ fn history_tree_is_updated_for_network_upgrade(
|
|||
let tree = NonEmptyHistoryTree::from_block(
|
||||
Network::Mainnet,
|
||||
activation_block.clone(),
|
||||
&chain.sapling_note_commitment_tree.root(),
|
||||
&chain.orchard_note_commitment_tree.root(),
|
||||
&chain.sapling_note_commitment_tree().root(),
|
||||
&chain.orchard_note_commitment_tree().root(),
|
||||
)
|
||||
.unwrap();
|
||||
|
||||
|
@ -480,7 +490,12 @@ fn history_tree_is_updated_for_network_upgrade(
|
|||
.unwrap();
|
||||
|
||||
assert!(
|
||||
state.best_chain().unwrap().history_tree.as_ref().is_some(),
|
||||
state
|
||||
.best_chain()
|
||||
.unwrap()
|
||||
.history_block_commitment_tree()
|
||||
.as_ref()
|
||||
.is_some(),
|
||||
"history tree must still exist"
|
||||
);
|
||||
|
||||
|
@ -541,8 +556,8 @@ fn commitment_is_validated_for_network_upgrade(network: Network, network_upgrade
|
|||
let tree = NonEmptyHistoryTree::from_block(
|
||||
Network::Mainnet,
|
||||
activation_block.clone(),
|
||||
&chain.sapling_note_commitment_tree.root(),
|
||||
&chain.orchard_note_commitment_tree.root(),
|
||||
&chain.sapling_note_commitment_tree().root(),
|
||||
&chain.orchard_note_commitment_tree().root(),
|
||||
)
|
||||
.unwrap();
|
||||
|
||||
|
|
Loading…
Reference in New Issue