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use std::sync::Arc;
use async_trait::async_trait;
use atlas_arch::datasource::AccountUpdate;
use atlas_arch::datasource::{
BlockDetails, Datasource, DatasourceId, TransactionUpdate, UpdateType, Updates,
};
use atlas_arch::error::IndexerResult;
use atlas_arch::metrics::MetricsCollection;
use atlas_arch::sync::{BackfillSource, TipSource};
use std::collections::HashSet;
use std::time::Duration;
use tokio::sync::mpsc::Sender;
use tokio_util::sync::CancellationToken;
use super::fetcher::{BlockFetcher, BlockFetcherConfig};
use super::{ArchRpc, ArchRpcClient};
use std::sync::atomic::AtomicBool;
#[derive(Clone, Debug)]
pub struct ArchDatasourceConfig {
pub max_concurrency: usize,
pub batch_emit_size: usize,
pub fetch_window_size: usize,
pub initial_backoff_ms: u64,
pub max_retries: usize,
}
impl Default for ArchDatasourceConfig {
fn default() -> Self {
Self {
max_concurrency: 32,
batch_emit_size: 256,
fetch_window_size: 512,
initial_backoff_ms: 50,
max_retries: 5,
}
}
}
#[derive(Clone)]
pub struct ArchBackfillDatasource<C: ArchRpc + Clone + Send + Sync + 'static> {
client: C,
config: ArchDatasourceConfig,
}
impl ArchBackfillDatasource<ArchRpcClient> {
pub fn new(url: &str, config: ArchDatasourceConfig) -> Self {
Self {
client: ArchRpcClient::new(url),
config,
}
}
}
impl<C: ArchRpc + Clone + Send + Sync + 'static> ArchBackfillDatasource<C> {
pub fn with_client(client: C, config: ArchDatasourceConfig) -> Self {
Self { client, config }
}
}
#[async_trait]
impl<C: ArchRpc + Clone + Send + Sync + 'static> Datasource for ArchBackfillDatasource<C> {
async fn consume(
&self,
id: DatasourceId,
sender: Sender<(Updates, DatasourceId)>,
cancellation_token: CancellationToken,
metrics: Arc<MetricsCollection>,
) -> IndexerResult<()> {
// Initialize starting point at current best height and poll for new blocks
let mut last_seen_height = self.client.get_block_count().await.map_err(|e| {
atlas_arch::error::Error::Custom(format!("arch_rpc get_block_count: {}", e))
})?;
metrics
.update_gauge("arch_rpc_best_height", last_seen_height as f64)
.await
.ok();
let running = Arc::new(AtomicBool::new(true));
let fetcher_cfg = BlockFetcherConfig {
block_fetcher_threads: self.config.max_concurrency,
block_buffer_size: self.config.batch_emit_size * 2,
fetch_window_size: self.config.fetch_window_size,
initial_backoff_ms: self.config.initial_backoff_ms,
max_retries: self.config.max_retries,
};
let fetcher = BlockFetcher::new(fetcher_cfg, &self.client, Arc::clone(&running));
// Poll loop for new blocks beyond last_seen_height
loop {
if cancellation_token.is_cancelled() {
break;
}
let current_best = match self.client.get_block_count().await {
Ok(h) => h,
Err(_e) => {
// Backoff on error and continue
tokio::time::sleep(Duration::from_millis(1000)).await;
continue;
}
};
metrics
.update_gauge("arch_rpc_best_height", current_best as f64)
.await
.ok();
if current_best > last_seen_height {
let start = last_seen_height.saturating_add(1);
let end = current_best;
let mut rx = fetcher
.fetch_blocks(start, end, cancellation_token.clone())
.await;
while let Some(result) = rx.recv().await {
match result {
Ok((height, _hash, full_block)) => {
// Emit AccountUpdates for writable accounts in this block
if !full_block.transactions.is_empty() {
let mut writable_keys: HashSet<arch_program::pubkey::Pubkey> =
HashSet::new();
for tx in full_block.transactions.iter() {
let msg = &tx.runtime_transaction.message;
for (idx, key) in msg.account_keys.iter().enumerate() {
if msg.is_writable_index(idx) {
writable_keys.insert(*key);
}
}
}
if !writable_keys.is_empty() {
let keys_vec: Vec<arch_program::pubkey::Pubkey> =
writable_keys.iter().cloned().collect();
match self.client.get_multiple_accounts(&keys_vec).await {
Ok(accounts_map) => {
let mut updates: Vec<AccountUpdate> =
Vec::with_capacity(accounts_map.len());
for (pubkey, maybe_info) in accounts_map.into_iter() {
if let Some(account) = maybe_info {
updates.push(AccountUpdate {
pubkey,
account,
height,
});
}
}
if !updates.is_empty() {
let _ = sender
.send((Updates::Accounts(updates), id.clone()))
.await;
metrics
.increment_counter(
"arch_rpc_backfill_account_updates_emitted",
1,
)
.await
.ok();
}
}
Err(_e) => {
metrics
.increment_counter(
"arch_rpc_backfill_account_updates_failed",
1,
)
.await
.ok();
}
}
}
}
// Emit block details
let details = BlockDetails {
height,
block_hash: Some(full_block.hash()),
previous_block_hash: Some(full_block.previous_block_hash),
block_time: Some(full_block.timestamp as i64),
block_height: Some(full_block.block_height),
};
let _ = sender
.send((Updates::BlockDetails(vec![details]), id.clone()))
.await;
metrics
.increment_counter("arch_rpc_block_details_emitted", 1)
.await
.ok();
// Emit transactions
let mut chunk: Vec<TransactionUpdate> = Vec::new();
for tx in full_block.transactions.into_iter() {
let update = TransactionUpdate {
transaction: tx,
height,
};
chunk.push(update);
if chunk.len() >= self.config.batch_emit_size {
let _ = sender
.send((
Updates::Transactions(std::mem::take(&mut chunk)),
id.clone(),
))
.await;
}
}
if !chunk.is_empty() {
let _ = sender
.send((Updates::Transactions(chunk), id.clone()))
.await;
}
metrics
.increment_counter("arch_rpc_blocks_processed", 1)
.await
.ok();
}
Err(_e) => {
metrics
.increment_counter("arch_rpc_blocks_failed", 1)
.await
.ok();
}
}
}
last_seen_height = current_best;
} else {
tokio::time::sleep(Duration::from_millis(1000)).await;
}
}
Ok(())
}
fn update_types(&self) -> Vec<UpdateType> {
vec![
UpdateType::Transaction,
UpdateType::AccountUpdate,
UpdateType::BlockDetails,
]
}
}
// TipSource implementation to integrate with the syncing orchestrator
#[async_trait]
impl<C: ArchRpc + Clone + Send + Sync + 'static> TipSource for ArchBackfillDatasource<C> {
async fn best_height(&self) -> IndexerResult<u64> {
self.client.get_block_count().await.map_err(|e| {
atlas_arch::error::Error::Custom(format!("arch_rpc get_block_count: {}", e))
})
}
}
// BackfillSource implementation for a height range
#[async_trait]
impl<C: ArchRpc + Clone + Send + Sync + 'static> BackfillSource for ArchBackfillDatasource<C> {
async fn backfill_range(
&self,
start_height_inclusive: u64,
end_height_inclusive: u64,
sender: Sender<(Updates, DatasourceId)>,
cancellation_token: CancellationToken,
metrics: Arc<MetricsCollection>,
) -> IndexerResult<()> {
let running = Arc::new(AtomicBool::new(true));
let fetcher_cfg = BlockFetcherConfig {
block_fetcher_threads: self.config.max_concurrency,
block_buffer_size: self.config.batch_emit_size * 2,
fetch_window_size: self.config.fetch_window_size,
initial_backoff_ms: self.config.initial_backoff_ms,
max_retries: self.config.max_retries,
};
let fetcher = BlockFetcher::new(fetcher_cfg, &self.client, Arc::clone(&running));
let mut rx = fetcher
.fetch_blocks(
start_height_inclusive,
end_height_inclusive,
cancellation_token.clone(),
)
.await;
let datasource_id = DatasourceId::new_named("arch_rpc_backfill");
while let Some(result) = rx.recv().await {
match result {
Ok((height, _hash, full_block)) => {
// Emit AccountUpdates for all writable accounts across txs in this block
if !full_block.transactions.is_empty() {
let mut writable_keys: HashSet<arch_program::pubkey::Pubkey> =
HashSet::new();
for tx in full_block.transactions.iter() {
let msg = &tx.runtime_transaction.message;
for (idx, key) in msg.account_keys.iter().enumerate() {
if msg.is_writable_index(idx) {
writable_keys.insert(*key);
}
}
}
if !writable_keys.is_empty() {
let keys_vec: Vec<arch_program::pubkey::Pubkey> =
writable_keys.iter().cloned().collect();
match self.client.get_multiple_accounts(&keys_vec).await {
Ok(accounts_map) => {
let mut updates: Vec<AccountUpdate> =
Vec::with_capacity(accounts_map.len());
for (pubkey, maybe_info) in accounts_map.into_iter() {
if let Some(account) = maybe_info {
updates.push(AccountUpdate {
pubkey,
account,
height,
});
}
}
if !updates.is_empty() {
let _ = sender
.send((
Updates::Accounts(updates),
datasource_id.clone(),
))
.await;
metrics
.increment_counter(
"arch_rpc_backfill_account_updates_emitted",
1,
)
.await
.ok();
}
}
Err(_e) => {
metrics
.increment_counter(
"arch_rpc_backfill_account_updates_failed",
1,
)
.await
.ok();
}
}
}
}
// Emit block details
let details = BlockDetails {
height,
block_hash: Some(full_block.hash()),
previous_block_hash: Some(full_block.previous_block_hash),
block_time: Some(full_block.timestamp as i64),
block_height: Some(full_block.block_height),
};
let _ = sender
.send((Updates::BlockDetails(vec![details]), datasource_id.clone()))
.await;
metrics
.increment_counter("arch_rpc_backfill_block_details_emitted", 1)
.await
.ok();
// Emit transactions in chunks
let mut chunk: Vec<TransactionUpdate> = Vec::new();
for tx in full_block.transactions.into_iter() {
let update = TransactionUpdate {
transaction: tx,
height,
};
chunk.push(update);
if chunk.len() >= self.config.batch_emit_size {
let _ = sender
.send((
Updates::Transactions(std::mem::take(&mut chunk)),
datasource_id.clone(),
))
.await;
}
}
if !chunk.is_empty() {
let _ = sender
.send((Updates::Transactions(chunk), datasource_id.clone()))
.await;
}
metrics
.increment_counter("arch_rpc_backfill_blocks_processed", 1)
.await
.ok();
}
Err(_e) => {
metrics
.increment_counter("arch_rpc_backfill_blocks_failed", 1)
.await
.ok();
}
}
}
Ok(())
}
}