turn caching back on
This commit is contained in:
parent
d961aa647d
commit
0b05e9012a
@ -5,11 +5,11 @@ use crate::jsonrpc::JsonRpcForwardedResponse;
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use crate::jsonrpc::JsonRpcForwardedResponseEnum;
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use crate::jsonrpc::JsonRpcForwardedResponseEnum;
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use crate::jsonrpc::JsonRpcRequest;
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use crate::jsonrpc::JsonRpcRequest;
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use crate::jsonrpc::JsonRpcRequestEnum;
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use crate::jsonrpc::JsonRpcRequestEnum;
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use ethers::prelude::{HttpClientError, ProviderError, WsClientError};
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use ethers::prelude::{HttpClientError, ProviderError, WsClientError, H256};
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use futures::future::join_all;
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use futures::future::join_all;
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use governor::clock::{Clock, QuantaClock};
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use governor::clock::{Clock, QuantaClock};
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// use linkedhashmap::LinkedHashMap;
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use linkedhashmap::LinkedHashMap;
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// use parking_lot::RwLock;
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use parking_lot::RwLock;
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use std::fmt;
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use std::fmt;
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use std::sync::Arc;
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use std::sync::Arc;
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use std::time::Duration;
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use std::time::Duration;
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@ -23,12 +23,12 @@ static APP_USER_AGENT: &str = concat!(
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env!("CARGO_PKG_VERSION"),
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env!("CARGO_PKG_VERSION"),
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);
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);
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// // TODO: put this in config? what size should we do?
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// TODO: put this in config? what size should we do?
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// const RESPONSE_CACHE_CAP: usize = 1024;
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const RESPONSE_CACHE_CAP: usize = 1024;
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// /// TODO: these types are probably very bad keys and values. i couldn't get caching of warp::reply::Json to work
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/// TODO: these types are probably very bad keys and values. i couldn't get caching of warp::reply::Json to work
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// type ResponseLruCache =
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type ResponseLruCache =
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// RwLock<LinkedHashMap<(H256, String, Option<String>), JsonRpcForwardedResponse>>;
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RwLock<LinkedHashMap<(H256, String, Option<String>), JsonRpcForwardedResponse>>;
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/// The application
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/// The application
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// TODO: this debug impl is way too verbose. make something smaller
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// TODO: this debug impl is way too verbose. make something smaller
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@ -41,7 +41,7 @@ pub struct Web3ProxyApp {
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balanced_rpcs: Arc<Web3Connections>,
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balanced_rpcs: Arc<Web3Connections>,
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/// Send private requests (like eth_sendRawTransaction) to all these servers
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/// Send private requests (like eth_sendRawTransaction) to all these servers
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private_rpcs: Arc<Web3Connections>,
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private_rpcs: Arc<Web3Connections>,
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// response_cache: ResponseLruCache,
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response_cache: ResponseLruCache,
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}
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}
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impl fmt::Debug for Web3ProxyApp {
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impl fmt::Debug for Web3ProxyApp {
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@ -91,7 +91,7 @@ impl Web3ProxyApp {
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clock,
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clock,
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balanced_rpcs,
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balanced_rpcs,
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private_rpcs,
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private_rpcs,
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// response_cache: Default::default(),
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response_cache: Default::default(),
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})
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})
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}
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}
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@ -211,22 +211,26 @@ impl Web3ProxyApp {
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// if no tiers are synced, fallback to privates
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// if no tiers are synced, fallback to privates
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// TODO: think more about this loop.
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// TODO: think more about this loop.
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loop {
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loop {
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// TODO: bring back this caching
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let best_block_hash = self
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// let best_block_hash = self.balanced_rpcs.head_block_hash();
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.balanced_rpcs
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.get_synced_rpcs()
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.enter()
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.map(|x| *x.get_head_block_hash())
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.unwrap();
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// // TODO: building this cache key is slow and its large, but i don't see a better way right now
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// TODO: building this cache key is slow and its large, but i don't see a better way right now
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// // TODO: inspect the params and see if a block is specified. if so, use that block number instead of current_block
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// TODO: inspect the params and see if a block is specified. if so, use that block number instead of current_block
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// let cache_key = (
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let cache_key = (
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// best_block_hash,
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best_block_hash,
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// request.method.clone(),
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request.method.clone(),
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// request.params.clone().map(|x| x.to_string()),
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request.params.clone().map(|x| x.to_string()),
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// );
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);
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// if let Some(cached) = self.response_cache.read().get(&cache_key) {
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if let Some(cached) = self.response_cache.read().get(&cache_key) {
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// // TODO: this still serializes every time
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// TODO: this still serializes every time
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// // TODO: return a reference in the other places so that this works without a clone?
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// TODO: return a reference in the other places so that this works without a clone?
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// return Ok(cached.to_owned());
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return Ok(cached.to_owned());
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// }
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}
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match self.balanced_rpcs.next_upstream_server().await {
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match self.balanced_rpcs.next_upstream_server().await {
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Ok(active_request_handle) => {
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Ok(active_request_handle) => {
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@ -239,27 +243,27 @@ impl Web3ProxyApp {
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// TODO: trace here was really slow with millions of requests.
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// TODO: trace here was really slow with millions of requests.
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// info!("forwarding request from {}", upstream_server);
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// info!("forwarding request from {}", upstream_server);
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JsonRpcForwardedResponse {
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let response = JsonRpcForwardedResponse {
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jsonrpc: "2.0".to_string(),
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jsonrpc: "2.0".to_string(),
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id: request.id,
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id: request.id,
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// TODO: since we only use the result here, should that be all we return from try_send_request?
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// TODO: since we only use the result here, should that be all we return from try_send_request?
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result: Some(partial_response),
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result: Some(partial_response),
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error: None,
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error: None,
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};
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// TODO: small race condidition here. parallel requests with the same query will both be saved to the cache
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let mut response_cache = self.response_cache.write();
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// TODO: cache the warp::reply to save us serializing every time
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response_cache.insert(cache_key, response.clone());
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if response_cache.len() >= RESPONSE_CACHE_CAP {
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// TODO: this isn't an LRU. it's a "least recently created". does that have a fancy name? should we make it an lru? these caches only live for one block
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response_cache.pop_front();
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}
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}
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// // TODO: small race condidition here. parallel requests with the same query will both be saved to the cache
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drop(response_cache);
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// let mut response_cache = self.response_cache.write();
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// // TODO: cache the warp::reply to save us serializing every time
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response
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// response_cache.insert(cache_key, response.clone());
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// if response_cache.len() >= RESPONSE_CACHE_CAP {
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// // TODO: this isn't an LRU. it's a "least recently created". does that have a fancy name? should we make it an lru? these caches only live for one block
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// response_cache.pop_front();
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// }
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// drop(response_cache);
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// response
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}
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}
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Err(e) => {
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Err(e) => {
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// TODO: move this to a helper function?
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// TODO: move this to a helper function?
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@ -6,8 +6,7 @@ use futures::StreamExt;
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use governor::clock::{QuantaClock, QuantaInstant};
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use governor::clock::{QuantaClock, QuantaInstant};
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use governor::NotUntil;
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use governor::NotUntil;
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use hashbrown::HashMap;
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use hashbrown::HashMap;
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use left_right::{Absorb, ReadHandle, WriteHandle};
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use left_right::{Absorb, ReadHandleFactory, WriteHandle};
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use parking_lot::RwLock;
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use serde_json::value::RawValue;
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use serde_json::value::RawValue;
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use std::cmp;
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use std::cmp;
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use std::fmt;
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use std::fmt;
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@ -18,7 +17,7 @@ use crate::config::Web3ConnectionConfig;
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use crate::connection::{ActiveRequestHandle, Web3Connection};
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use crate::connection::{ActiveRequestHandle, Web3Connection};
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#[derive(Clone, Default)]
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#[derive(Clone, Default)]
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struct SyncedConnections {
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pub struct SyncedConnections {
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head_block_number: u64,
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head_block_number: u64,
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head_block_hash: H256,
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head_block_hash: H256,
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inner: Vec<Arc<Web3Connection>>,
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inner: Vec<Arc<Web3Connection>>,
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@ -32,22 +31,26 @@ impl fmt::Debug for SyncedConnections {
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}
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}
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impl SyncedConnections {
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impl SyncedConnections {
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fn new(max_connections: usize) -> Self {
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pub fn get_head_block_hash(&self) -> &H256 {
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let inner = Vec::with_capacity(max_connections);
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&self.head_block_hash
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Self {
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head_block_number: 0,
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head_block_hash: Default::default(),
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inner,
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}
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}
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}
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fn update(&mut self, new_block_num: u64, new_block_hash: H256, rpc: Arc<Web3Connection>) {
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fn update(
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&mut self,
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log: bool,
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new_block_num: u64,
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new_block_hash: H256,
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rpc: Arc<Web3Connection>,
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) -> bool {
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let mut update_needed: bool = false;
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// TODO: double check this logic
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// TODO: double check this logic
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match new_block_num.cmp(&self.head_block_number) {
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match new_block_num.cmp(&self.head_block_number) {
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cmp::Ordering::Greater => {
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cmp::Ordering::Greater => {
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// the rpc's newest block is the new overall best block
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// the rpc's newest block is the new overall best block
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if log {
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info!("new head block {} from {}", new_block_num, rpc);
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info!("new head block {} from {}", new_block_num, rpc);
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}
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self.inner.clear();
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self.inner.clear();
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self.inner.push(rpc);
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self.inner.push(rpc);
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@ -59,52 +62,65 @@ impl SyncedConnections {
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if new_block_hash != self.head_block_hash {
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if new_block_hash != self.head_block_hash {
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// same height, but different chain
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// same height, but different chain
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// TODO: anything else we should do? set some "nextSafeBlockHeight" to delay sending transactions?
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// TODO: anything else we should do? set some "nextSafeBlockHeight" to delay sending transactions?
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if log {
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warn!(
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warn!(
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"chain is forked at #{}! {} has {:?}. First was {:?}",
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"chain is forked at #{}! {} has {:?}. First was {:?}",
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new_block_num, rpc, new_block_hash, self.head_block_hash
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new_block_num, rpc, new_block_hash, self.head_block_hash
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);
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);
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return;
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}
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return update_needed;
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}
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}
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// do not clear synced_connections.
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// do not clear synced_connections.
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// we just want to add this rpc to the end
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// we just want to add this rpc to the end
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self.inner.push(rpc);
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self.inner.push(rpc);
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update_needed = true;
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}
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}
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cmp::Ordering::Less => {
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cmp::Ordering::Less => {
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// this isn't the best block in the tier. don't do anything
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// this isn't the best block in the tier. don't do anything
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return;
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return update_needed;
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}
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}
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}
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}
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// TODO: better log
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// TODO: better log
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if log {
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trace!("Now synced: {:?}", self.inner);
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trace!("Now synced: {:?}", self.inner);
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}
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}
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update_needed
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}
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}
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}
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struct SyncedConnectionsUpdate {
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enum SyncedConnectionsOp {
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new_block_number: u64,
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SyncedConnectionsUpdate(u64, H256, Arc<Web3Connection>),
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new_block_hash: H256,
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SyncedConnectionsCapacity(usize),
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rpc: Arc<Web3Connection>,
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}
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}
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impl Absorb<SyncedConnectionsUpdate> for SyncedConnections {
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impl Absorb<SyncedConnectionsOp> for SyncedConnections {
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fn absorb_first(&mut self, operation: &mut SyncedConnectionsUpdate, _: &Self) {
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fn absorb_first(&mut self, operation: &mut SyncedConnectionsOp, _: &Self) {
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self.update(
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match operation {
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operation.new_block_number,
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SyncedConnectionsOp::SyncedConnectionsUpdate(new_block_number, new_block_hash, rpc) => {
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operation.new_block_hash,
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self.update(true, *new_block_number, *new_block_hash, rpc.clone());
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operation.rpc.clone(),
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}
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);
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SyncedConnectionsOp::SyncedConnectionsCapacity(capacity) => {
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self.inner = Vec::with_capacity(*capacity);
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}
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}
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}
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}
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fn absorb_second(&mut self, operation: SyncedConnectionsUpdate, _: &Self) {
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fn absorb_second(&mut self, operation: SyncedConnectionsOp, _: &Self) {
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self.update(
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match operation {
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operation.new_block_number,
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SyncedConnectionsOp::SyncedConnectionsUpdate(new_block_number, new_block_hash, rpc) => {
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operation.new_block_hash,
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// TODO: disable logging on this one?
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operation.rpc,
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self.update(false, new_block_number, new_block_hash, rpc);
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);
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}
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SyncedConnectionsOp::SyncedConnectionsCapacity(capacity) => {
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self.inner = Vec::with_capacity(capacity);
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}
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}
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}
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}
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// See the documentation of `Absorb::drop_first`.
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fn drop_first(self: Box<Self>) {}
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fn drop_first(self: Box<Self>) {}
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fn sync_with(&mut self, first: &Self) {
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fn sync_with(&mut self, first: &Self) {
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@ -118,8 +134,8 @@ impl Absorb<SyncedConnectionsUpdate> for SyncedConnections {
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pub struct Web3Connections {
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pub struct Web3Connections {
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inner: Vec<Arc<Web3Connection>>,
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inner: Vec<Arc<Web3Connection>>,
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/// TODO: what is the best type for this? Heavy reads with writes every few seconds. When writes happen, there is a burst of them
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/// TODO: what is the best type for this? Heavy reads with writes every few seconds. When writes happen, there is a burst of them
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/// TODO: we probably need a better lock on this. left_right with the writer in a mutex
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/// TODO: why does the reader need a mutex? is there a better way to do this?
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synced_connections: RwLock<SyncedConnections>,
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synced_connections_reader: ReadHandleFactory<SyncedConnections>,
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}
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}
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impl fmt::Debug for Web3Connections {
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impl fmt::Debug for Web3Connections {
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@ -139,10 +155,10 @@ impl Web3Connections {
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clock: &QuantaClock,
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clock: &QuantaClock,
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subscribe_heads: bool,
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subscribe_heads: bool,
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) -> anyhow::Result<Arc<Self>> {
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) -> anyhow::Result<Arc<Self>> {
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let mut connections = vec![];
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let num_connections = servers.len();
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let num_connections = servers.len();
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// turn configs into connections
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let mut connections = Vec::with_capacity(num_connections);
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for server_config in servers.into_iter() {
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for server_config in servers.into_iter() {
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match server_config
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match server_config
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.try_build(clock, chain_id, http_client.clone())
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.try_build(clock, chain_id, http_client.clone())
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@ -153,15 +169,7 @@ impl Web3Connections {
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}
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}
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}
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}
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// TODO: exit if no connections?
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if connections.len() < 2 {
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let connections = Arc::new(Self {
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inner: connections,
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synced_connections: RwLock::new(SyncedConnections::new(num_connections)),
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});
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if subscribe_heads {
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if connections.inner.len() < 2 {
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// TODO: less than 3? what should we do here?
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// TODO: less than 3? what should we do here?
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return Err(anyhow::anyhow!(
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return Err(anyhow::anyhow!(
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"need at least 2 connections when subscribing to heads!"
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"need at least 2 connections when subscribing to heads!"
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@ -170,12 +178,11 @@ impl Web3Connections {
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let (block_sender, block_receiver) = flume::unbounded();
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let (block_sender, block_receiver) = flume::unbounded();
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{
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let (mut synced_connections_writer, synced_connections_reader) =
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let connections = Arc::clone(&connections);
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left_right::new::<SyncedConnections, SyncedConnectionsOp>();
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tokio::spawn(async move { connections.update_synced_rpcs(block_receiver).await });
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}
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for connection in connections.inner.iter() {
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if subscribe_heads {
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for connection in connections.iter() {
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// subscribe to new heads in a spawned future
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// subscribe to new heads in a spawned future
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// TODO: channel instead. then we can have one future with write access to a left-right?
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// TODO: channel instead. then we can have one future with write access to a left-right?
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let connection = Arc::clone(connection);
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let connection = Arc::clone(connection);
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@ -191,12 +198,31 @@ impl Web3Connections {
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}
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}
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}
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}
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synced_connections_writer.append(SyncedConnectionsOp::SyncedConnectionsCapacity(
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num_connections,
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));
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synced_connections_writer.publish();
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let connections = Arc::new(Self {
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inner: connections,
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synced_connections_reader: synced_connections_reader.factory(),
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});
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if subscribe_heads {
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let connections = Arc::clone(&connections);
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||||||
|
tokio::spawn(async move {
|
||||||
|
connections
|
||||||
|
.update_synced_rpcs(block_receiver, synced_connections_writer)
|
||||||
|
.await
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
Ok(connections)
|
Ok(connections)
|
||||||
}
|
}
|
||||||
|
|
||||||
// pub fn synced_connections(&self) -> &RwLock<SyncedConnections> {
|
pub fn get_synced_rpcs(&self) -> left_right::ReadHandle<SyncedConnections> {
|
||||||
// &self.synced_connections
|
self.synced_connections_reader.handle()
|
||||||
// }
|
}
|
||||||
|
|
||||||
/// Send the same request to all the handles. Returning the fastest successful result.
|
/// Send the same request to all the handles. Returning the fastest successful result.
|
||||||
pub async fn try_send_parallel_requests(
|
pub async fn try_send_parallel_requests(
|
||||||
@ -259,10 +285,10 @@ impl Web3Connections {
|
|||||||
}
|
}
|
||||||
|
|
||||||
/// TODO: possible dead lock here. investigate more. probably refactor
|
/// TODO: possible dead lock here. investigate more. probably refactor
|
||||||
// #[instrument]
|
async fn update_synced_rpcs(
|
||||||
pub async fn update_synced_rpcs(
|
|
||||||
&self,
|
&self,
|
||||||
block_receiver: flume::Receiver<(u64, H256, Arc<Web3Connection>)>,
|
block_receiver: flume::Receiver<(u64, H256, Arc<Web3Connection>)>,
|
||||||
|
mut synced_connections_writer: WriteHandle<SyncedConnections, SyncedConnectionsOp>,
|
||||||
) -> anyhow::Result<()> {
|
) -> anyhow::Result<()> {
|
||||||
while let Ok((new_block_num, new_block_hash, rpc)) = block_receiver.recv_async().await {
|
while let Ok((new_block_num, new_block_hash, rpc)) = block_receiver.recv_async().await {
|
||||||
if new_block_num == 0 {
|
if new_block_num == 0 {
|
||||||
@ -270,10 +296,14 @@ impl Web3Connections {
|
|||||||
continue;
|
continue;
|
||||||
}
|
}
|
||||||
|
|
||||||
// TODO: experiment with different locks and such here
|
synced_connections_writer.append(SyncedConnectionsOp::SyncedConnectionsUpdate(
|
||||||
let mut synced_connections = self.synced_connections.write();
|
new_block_num,
|
||||||
|
new_block_hash,
|
||||||
|
rpc,
|
||||||
|
));
|
||||||
|
|
||||||
synced_connections.update(new_block_num, new_block_hash, rpc);
|
// TODO: only publish when the second block arrives?
|
||||||
|
synced_connections_writer.publish();
|
||||||
}
|
}
|
||||||
|
|
||||||
Ok(())
|
Ok(())
|
||||||
@ -285,8 +315,12 @@ impl Web3Connections {
|
|||||||
) -> Result<ActiveRequestHandle, Option<NotUntil<QuantaInstant>>> {
|
) -> Result<ActiveRequestHandle, Option<NotUntil<QuantaInstant>>> {
|
||||||
let mut earliest_not_until = None;
|
let mut earliest_not_until = None;
|
||||||
|
|
||||||
// TODO: this clone is definitely not the best way to do this
|
let mut synced_rpc_arcs = self
|
||||||
let mut synced_rpc_arcs = self.synced_connections.read().inner.clone();
|
.synced_connections_reader
|
||||||
|
.handle()
|
||||||
|
.enter()
|
||||||
|
.map(|x| x.inner.clone())
|
||||||
|
.unwrap();
|
||||||
|
|
||||||
// // TODO: how should we include the soft limit? floats are slower than integer math
|
// // TODO: how should we include the soft limit? floats are slower than integer math
|
||||||
// let a = a as f32 / self.soft_limit as f32;
|
// let a = a as f32 / self.soft_limit as f32;
|
||||||
|
Loading…
Reference in New Issue
Block a user