#[repr(C)]pub struct Batch {
pub num_iters: u64,
pub bloom_filter_capacity: u64,
pub batch_size: u64,
pub zkp_batch_size: u64,
pub sequence_number: u64,
pub start_index: u64,
pub start_slot: u64,
pub root_index: u32,
/* private fields */
}
Expand description
Batch structure that holds the metadata and state of a batch.
A batch:
- has a size and a number of zkp batches.
- size must be divisible by zkp batch size.
- is part of a queue, each queue has two batches.
- is inserted into the tree by zkp batch.
Fields§
§num_iters: u64
Number of iterations for the bloom_filter.
bloom_filter_capacity: u64
Theoretical capacity of the bloom_filter in bits. We want to make it much larger than batch_size to avoid false positives.
batch_size: u64
Number of elements in a batch.
zkp_batch_size: u64
Number of elements in a zkp batch. A batch consists out of one or more zkp batches.
sequence_number: u64
Sequence number when it is save to clear the batch without advancing to the saved root index.
start_index: u64
Start leaf index of the first
start_slot: u64
Slot of the first insertion into the batch. Indexers can use this slot to reindex inserted elements. Is not used for the batch itself.
root_index: u32
Implementations§
Source§impl Batch
impl Batch
pub fn new( num_iters: u64, bloom_filter_capacity: u64, batch_size: u64, zkp_batch_size: u64, start_index: u64, ) -> Self
Sourcepub fn get_state(&self) -> BatchState
pub fn get_state(&self) -> BatchState
Returns the state of the batch.
pub fn bloom_filter_is_zeroed(&self) -> bool
pub fn set_bloom_filter_to_zeroed(&mut self)
pub fn set_bloom_filter_to_not_zeroed(&mut self)
pub fn start_slot_is_set(&self) -> bool
pub fn set_start_slot(&mut self, start_slot: &u64)
Sourcepub fn advance_state_to_fill(
&mut self,
start_index: Option<u64>,
) -> Result<(), BatchedMerkleTreeError>
pub fn advance_state_to_fill( &mut self, start_index: Option<u64>, ) -> Result<(), BatchedMerkleTreeError>
fill -> full -> inserted -> fill (from tree insertion perspective is pending if fill or full)
Sourcepub fn advance_state_to_inserted(
&mut self,
) -> Result<(), BatchedMerkleTreeError>
pub fn advance_state_to_inserted( &mut self, ) -> Result<(), BatchedMerkleTreeError>
fill -> full -> inserted -> fill (from tree insertion perspective is pending if fill or full)
Sourcepub fn advance_state_to_full(&mut self) -> Result<(), BatchedMerkleTreeError>
pub fn advance_state_to_full(&mut self) -> Result<(), BatchedMerkleTreeError>
fill -> full -> inserted -> fill (from tree insertion perspective is pending if fill or full)
pub fn get_first_ready_zkp_batch(&self) -> Result<u64, BatchedMerkleTreeError>
pub fn batch_is_ready_to_insert(&self) -> bool
Sourcepub fn get_num_ready_zkp_updates(&self) -> u64
pub fn get_num_ready_zkp_updates(&self) -> u64
Returns the number of zkp batch updates that are ready to be inserted into the tree.
Sourcepub fn get_num_inserted_zkp_batch(&self) -> u64
pub fn get_num_inserted_zkp_batch(&self) -> u64
Returns the number of inserted elements in the current zkp batch.
Sourcepub fn get_current_zkp_batch_index(&self) -> u64
pub fn get_current_zkp_batch_index(&self) -> u64
Returns the current zkp batch index. New values are inserted into the current zkp batch.
Sourcepub fn get_num_inserted_zkps(&self) -> u64
pub fn get_num_inserted_zkps(&self) -> u64
Returns the number of inserted zkps.
Sourcepub fn get_num_elements_inserted_into_tree(&self) -> u64
pub fn get_num_elements_inserted_into_tree(&self) -> u64
Returns the number of elements inserted into the tree.
Sourcepub fn get_num_inserted_elements(&self) -> u64
pub fn get_num_inserted_elements(&self) -> u64
Returns the number of inserted elements in the batch.
Sourcepub fn get_num_zkp_batches(&self) -> u64
pub fn get_num_zkp_batches(&self) -> u64
Returns the number of zkp batches in the batch.
Sourcepub fn get_num_hash_chain_store(&self) -> usize
pub fn get_num_hash_chain_store(&self) -> usize
Returns the number of the hash_chain stores.
Sourcepub fn get_value_index_in_batch(
&self,
leaf_index: u64,
) -> Result<u64, BatchedMerkleTreeError>
pub fn get_value_index_in_batch( &self, leaf_index: u64, ) -> Result<u64, BatchedMerkleTreeError>
Returns the index of a value by leaf index in the value store, provided it does exist in the batch.
Sourcepub fn store_and_hash_value(
&mut self,
value: &[u8; 32],
value_store: &mut ZeroCopyVecU64<'_, [u8; 32]>,
hash_chain_store: &mut ZeroCopyVecU64<'_, [u8; 32]>,
start_slot: &u64,
) -> Result<(), BatchedMerkleTreeError>
pub fn store_and_hash_value( &mut self, value: &[u8; 32], value_store: &mut ZeroCopyVecU64<'_, [u8; 32]>, hash_chain_store: &mut ZeroCopyVecU64<'_, [u8; 32]>, start_slot: &u64, ) -> Result<(), BatchedMerkleTreeError>
Stores the value in a value store, and adds the value to the current hash chain.
Sourcepub fn insert(
&mut self,
bloom_filter_value: &[u8; 32],
hash_chain_value: &[u8; 32],
bloom_filter_stores: &mut [&mut [u8]],
hash_chain_store: &mut ZeroCopyVecU64<'_, [u8; 32]>,
bloom_filter_index: usize,
start_slot: &u64,
) -> Result<(), BatchedMerkleTreeError>
pub fn insert( &mut self, bloom_filter_value: &[u8; 32], hash_chain_value: &[u8; 32], bloom_filter_stores: &mut [&mut [u8]], hash_chain_store: &mut ZeroCopyVecU64<'_, [u8; 32]>, bloom_filter_index: usize, start_slot: &u64, ) -> Result<(), BatchedMerkleTreeError>
Insert into the bloom filter and add value to current hash chain. (used by nullifier & address queues)
- set start slot
- Add value to hash chain.
- Insert value into the bloom filter at bloom_filter_index.
- Check that value is not in any other bloom filter.
Sourcepub fn add_to_hash_chain(
&mut self,
value: &[u8; 32],
hash_chain_store: &mut ZeroCopyVecU64<'_, [u8; 32]>,
) -> Result<(), BatchedMerkleTreeError>
pub fn add_to_hash_chain( &mut self, value: &[u8; 32], hash_chain_store: &mut ZeroCopyVecU64<'_, [u8; 32]>, ) -> Result<(), BatchedMerkleTreeError>
Add a value to the current hash chain, and advance batch state.
- Check that the batch is ready.
- If the zkp batch is empty, start a new hash chain.
- If the zkp batch is not empty, add value to last hash chain.
- If the zkp batch is full, increment the zkp batch index.
- If all zkp batches are full, set batch state to full.
Sourcepub fn check_non_inclusion(
num_iters: usize,
bloom_filter_capacity: u64,
value: &[u8; 32],
store: &mut [u8],
) -> Result<(), BatchedMerkleTreeError>
pub fn check_non_inclusion( num_iters: usize, bloom_filter_capacity: u64, value: &[u8; 32], store: &mut [u8], ) -> Result<(), BatchedMerkleTreeError>
Checks that value is not in the bloom filter.
Sourcepub fn mark_as_inserted_in_merkle_tree(
&mut self,
sequence_number: u64,
root_index: u32,
root_history_length: u32,
) -> Result<BatchState, BatchedMerkleTreeError>
pub fn mark_as_inserted_in_merkle_tree( &mut self, sequence_number: u64, root_index: u32, root_history_length: u32, ) -> Result<BatchState, BatchedMerkleTreeError>
Marks the batch as inserted in the merkle tree.
- Checks that the batch is ready.
- increments the number of inserted zkps.
- If all zkps are inserted, sets the state to inserted.
- Returns the updated state of the batch.
pub fn check_leaf_index_exists( &self, leaf_index: u64, ) -> Result<(), BatchedMerkleTreeError>
Sourcepub fn leaf_index_exists(&self, leaf_index: u64) -> bool
pub fn leaf_index_exists(&self, leaf_index: u64) -> bool
Returns true if value of leaf index could exist in batch.
True
doesn’t mean that the value exists in the batch,
just that it is possible. The value might already be spent
or never have been inserted in case an invalid index was provided.
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