229 lines
9.0 KiB
Rust
229 lines
9.0 KiB
Rust
use crate::{abi, pool_factories};
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use anyhow::Result;
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use itertools::Itertools;
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use std::collections::HashMap;
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use substreams::hex;
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use substreams::pb::substreams::StoreDeltas;
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use substreams::store::{
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StoreAdd, StoreAddBigInt, StoreAddInt64, StoreGet, StoreGetInt64, StoreNew,
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};
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use substreams_ethereum::pb::eth;
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use substreams_ethereum::Event;
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use tycho_substreams::balances;
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use tycho_substreams::contract::extract_contract_changes;
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use tycho_substreams::pb::tycho::evm::v1::{
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self as tycho, BalanceDelta, BlockBalanceDeltas, BlockTransactionProtocolComponents,
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TransactionProtocolComponents,
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};
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const VAULT_ADDRESS: &[u8] = &hex!("BA12222222228d8Ba445958a75a0704d566BF2C8");
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#[substreams::handlers::map]
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pub fn map_pools_created(block: eth::v2::Block) -> Result<BlockTransactionProtocolComponents> {
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// Gather contract changes by indexing `PoolCreated` events and analysing the `Create` call
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// We store these as a hashmap by tx hash since we need to agg by tx hash later
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Ok(BlockTransactionProtocolComponents {
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tx_components: block
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.transactions()
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.filter_map(|tx| {
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let components = tx
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.logs_with_calls()
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.filter(|(_, call)| !call.call.state_reverted)
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.filter_map(|(log, call)| {
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pool_factories::address_map(
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call.call.address.as_slice(),
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log,
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call.call,
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&(tx.into()),
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)
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})
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.collect::<Vec<_>>();
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if !components.is_empty() {
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Some(TransactionProtocolComponents {
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tx: Some(tx.into()),
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components,
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})
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} else {
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None
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}
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})
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.collect::<Vec<_>>(),
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})
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}
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/// Simply stores the `ProtocolComponent`s with the pool id as the key
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#[substreams::handlers::store]
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pub fn store_pools_created(map: BlockTransactionProtocolComponents, store: StoreAddInt64) {
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store.add_many(
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0,
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&map.tx_components
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.iter()
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.flat_map(|tx_components| &tx_components.components)
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.map(|component| format!("pool:{0}", component.id))
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.collect::<Vec<_>>(),
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1,
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);
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}
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/// Since the `PoolBalanceChanged` and `Swap` events administer only deltas, we need to leverage a map and a
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/// store to be able to tally up final balances for tokens in a pool.
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#[substreams::handlers::map]
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pub fn map_balance_deltas(
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block: eth::v2::Block,
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store: StoreGetInt64,
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) -> Result<BlockBalanceDeltas, anyhow::Error> {
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let balance_deltas = block
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.logs()
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.filter(|log| log.address() == VAULT_ADDRESS)
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.flat_map(|vault_log| {
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let mut deltas = Vec::new();
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if let Some(ev) =
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abi::vault::events::PoolBalanceChanged::match_and_decode(vault_log.log)
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{
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let component_id = format!(
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"0x{}",
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String::from_utf8(ev.pool_id[..20].to_vec()).unwrap()
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)
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.as_bytes()
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.to_vec();
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if store
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.get_last(format!("pool:{}", hex::encode(&component_id)))
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.is_some()
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{
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for (token, delta) in ev.tokens.iter().zip(ev.deltas.iter()) {
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deltas.push(BalanceDelta {
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ord: vault_log.ordinal(),
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tx: Some(vault_log.receipt.transaction.into()),
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token: token.to_vec(),
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delta: delta.to_signed_bytes_be(),
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component_id: component_id.clone(),
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});
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}
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}
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} else if let Some(ev) = abi::vault::events::Swap::match_and_decode(vault_log.log) {
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let component_id = format!(
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"0x{}",
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String::from_utf8(ev.pool_id[..20].to_vec()).unwrap()
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)
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.as_bytes()
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.to_vec();
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if store
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.get_last(format!("pool:{}", hex::encode(&component_id)))
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.is_some()
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{
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deltas.extend_from_slice(&[
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BalanceDelta {
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ord: vault_log.ordinal(),
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tx: Some(vault_log.receipt.transaction.into()),
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token: ev.token_in.to_vec(),
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delta: ev.amount_in.to_signed_bytes_be(),
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component_id: component_id.clone(),
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},
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BalanceDelta {
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ord: vault_log.ordinal(),
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tx: Some(vault_log.receipt.transaction.into()),
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token: ev.token_out.to_vec(),
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delta: ev.amount_out.neg().to_signed_bytes_be(),
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component_id,
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},
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]);
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}
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}
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deltas
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})
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.collect::<Vec<_>>();
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Ok(BlockBalanceDeltas { balance_deltas })
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}
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/// It's significant to include both the `pool_id` and the `token_id` for each balance delta as the
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/// store key to ensure that there's a unique balance being tallied for each.
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#[substreams::handlers::store]
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pub fn store_balance_changes(deltas: BlockBalanceDeltas, store: StoreAddBigInt) {
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balances::store_balance_changes(deltas, store);
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}
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/// This is the main map that handles most of the indexing of this substream.
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/// Every contract change is grouped by transaction index via the `transaction_contract_changes`
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/// map. Each block of code will extend the `TransactionContractChanges` struct with the
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/// cooresponding changes (balance, component, contract), inserting a new one if it doesn't exist.
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/// At the very end, the map can easily be sorted by index to ensure the final `BlockContractChanges`
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/// is ordered by transactions properly.
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#[substreams::handlers::map]
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pub fn map_changes(
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block: eth::v2::Block,
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grouped_components: BlockTransactionProtocolComponents,
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deltas: BlockBalanceDeltas,
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components_store: StoreGetInt64,
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balance_store: StoreDeltas, // Note, this map module is using the `deltas` mode for the store.
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) -> Result<tycho::BlockContractChanges> {
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// We merge contract changes by transaction (identified by transaction index) making it easy to
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// sort them at the very end.
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let mut transaction_contract_changes: HashMap<_, tycho::TransactionContractChanges> =
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HashMap::new();
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// `ProtocolComponents` are gathered from `map_pools_created` which just need a bit of work to
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// convert into `TransactionContractChanges`
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grouped_components
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.tx_components
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.iter()
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.for_each(|tx_component| {
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let tx = tx_component.tx.as_ref().unwrap();
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transaction_contract_changes
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.entry(tx.index)
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.or_insert_with(|| tycho::TransactionContractChanges::new(&tx))
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.component_changes
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.extend_from_slice(&tx_component.components);
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});
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// Balance changes are gathered by the `StoreDelta` based on `PoolBalanceChanged` creating
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// `BlockBalanceDeltas`. We essentially just process the changes that occurred to the `store` this
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// block. Then, these balance changes are merged onto the existing map of tx contract changes,
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// inserting a new one if it doesn't exist.
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balances::aggregate_balances_changes(balance_store, deltas)
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.into_iter()
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.for_each(|(_, (tx, balances))| {
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transaction_contract_changes
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.entry(tx.index)
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.or_insert_with(|| tycho::TransactionContractChanges::new(&tx))
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.balance_changes
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.extend(balances.into_iter().map(|(_, change)| change));
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});
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// Extract and insert any storage changes that happened for any of the components.
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extract_contract_changes(
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&block,
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|addr| {
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components_store
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.get_last(format!("pool:{0}", hex::encode(&addr)))
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.is_some()
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},
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&mut transaction_contract_changes,
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);
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// Process all `transaction_contract_changes` for final output in the `BlockContractChanges`,
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// sorted by transaction index (the key).
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Ok(tycho::BlockContractChanges {
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block: Some((&block).into()),
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changes: transaction_contract_changes
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.drain()
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.sorted_unstable_by_key(|(index, _)| *index)
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.filter_map(|(_, change)| {
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if change.contract_changes.is_empty()
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&& change.component_changes.is_empty()
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&& change.balance_changes.is_empty()
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{
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None
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} else {
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Some(change)
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}
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})
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.collect::<Vec<_>>(),
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})
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}
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