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feat: forester batched ops #1357

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ananas-block and others added 11 commits November 19, 2024 16:03
added bloomfilter

batch e2e test failing because filter change doesn't work yet

debugging

batched Merkle tree e2e test works with output queue

fix: e2e test work with input and output queues

chore: rename wipe bloomfilter -> wipe_batch

refactored input queue into mt account

stash

test: rnd account init works

chore: replace is_inserted with state

chore: moved offset to bounded vec, added bounded vec init and deserialize

fixed bounded vec imports

refactor: partial batch zkp updates, flexible sized root history array with seq

implemented batch prove and verification in rust tests untested

stash: batched updates work with simulate transactions test

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stash before account *mut

onchain account init works

test: account compression program batch updates work

feat: add flexbile nullifier to circuit

feat: implement nullifier derivation from tx hash

test: batch

test: bounded vec

cleanup

cleanup

cleanup

feat: add flexible nullifier to update circuit

fix: e2e test

chore: add full asserts to simulate tx test

test: root overwrite test

cleanup
…te prove_batch_append test

Change CI runner to buildjet-8vcpu-ubuntu-2204 for rust tests

run rust.yml on buildjet-16vcpu-ubuntu-2204

debug rust.yml workflow

Add step to download proving keys for big batches

Remove redundant setup steps and update test configurations

Update ProverConfig to use test-specific circuits

cleaning up after rebase to main
Issue:
the batch append zkp public input LeavesHashchainHash is computed
dynamically from the values array during the batched update.
If the values array changes in between proof generation and transaction
execution the batched append update fails.
-> Users can make batched append update transactions fail.

Solution:
compute LeavesHashchainHash incrementally when the output value is
inserted into the value array (the same way we compute it with
nullifiers for input queue insertions).

Changes:
1. switch to updated circuits
2. batch.rs
- add start_index field to derive the leaf_index of values from a value
array
- introduce store_and_hash_value to store an output queue value and add
it to the LeavesHashchainHash
3. batched_queue.rs
- init_queue initialize start_index during account initialization
- use store_and_hash_value instead of store_value when inserting into
output queues
- update batch.start_index when wiping a batch
4. batched_merkle_tree.rs
- remove subtree field (it is not used in new batch append circuit)
- initialize root_history with the zero_value_root
- add hashchain store for leaves_hashchain in
ZeroCopyBatchedMerkleTreeAccount
- add leaf_index to nullifier hash H(value, leaf_index, tx_hash)

Co-authored-by: ananas-block <[email protected]>
@@ -35,6 +37,17 @@ fn process_state_account(account: &Account, pubkey: Pubkey) -> Result<TreeAccoun
))
}

fn process_batch_state_account(account: &mut Account, pubkey: Pubkey) -> Result<TreeAccounts> {
check_discriminator::<BatchedMerkleTreeAccount>(&account.data)?;
let tree_account = ZeroCopyBatchedMerkleTreeAccount::from_bytes_mut(&mut account.data)?;
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from_bytes_mut checks the discriminator

Comment on lines 178 to 188
if i == merkle_tree.get_account().queue.batch_size / 2 {
instruction_data = Some(
create_append_batch_ix_data(
&mut e2e_env.rpc,
&mut e2e_env.indexer.state_merkle_trees[0],
state_merkle_tree_pubkey,
output_queue_pubkey,
)
.await,
);
}
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best remove this it was just to test concurrency in the other test

.ok_or(AccountCompressionErrorCode::InclusionProofByIndexFailed)?;

if element == value {
*element = [0; 32];
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Suggested change
*element = [0; 32];

We need to remove this so that we can use the value from output_queue.value_vec[full_batch_index] directly instead from the indexer.

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2 participants