334 lines
11 KiB
Rust
334 lines
11 KiB
Rust
use crate::app::Web3ProxyJoinHandle;
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use crate::rpcs::blockchain::{BlocksByHashCache, Web3ProxyBlock};
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use crate::rpcs::one::Web3Rpc;
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use argh::FromArgs;
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use ethers::prelude::{Address, TxHash, H256};
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use ethers::types::{U256, U64};
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use hashbrown::HashMap;
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use log::warn;
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use migration::sea_orm::DatabaseConnection;
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use serde::Deserialize;
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use std::sync::Arc;
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use std::time::Duration;
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pub type BlockAndRpc = (Option<Web3ProxyBlock>, Arc<Web3Rpc>);
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pub type TxHashAndRpc = (TxHash, Arc<Web3Rpc>);
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#[derive(Debug, FromArgs)]
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/// Web3_proxy is a fast caching and load balancing proxy for web3 (Ethereum or similar) JsonRPC servers.
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pub struct CliConfig {
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/// path to a toml of rpc servers
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#[argh(option, default = "\"./config/development.toml\".to_string()")]
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pub config: String,
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/// what port the proxy should listen on
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#[argh(option, default = "8544")]
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pub port: u16,
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/// what port the proxy should expose prometheus stats on
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#[argh(option, default = "8543")]
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pub prometheus_port: u16,
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/// number of worker threads. Defaults to the number of logical processors
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#[argh(option, default = "0")]
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pub workers: usize,
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/// path to a binary file used to encrypt cookies. Should be at least 64 bytes.
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#[argh(option, default = "\"./data/development_cookie_key\".to_string()")]
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pub cookie_key_filename: String,
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}
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#[derive(Clone, Debug, Deserialize, PartialEq, Eq)]
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pub struct TopConfig {
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pub app: AppConfig,
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pub balanced_rpcs: HashMap<String, Web3RpcConfig>,
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pub private_rpcs: Option<HashMap<String, Web3RpcConfig>>,
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pub bundler_4337_rpcs: Option<HashMap<String, Web3RpcConfig>>,
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/// unknown config options get put here
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#[serde(flatten, default = "HashMap::default")]
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pub extra: HashMap<String, serde_json::Value>,
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}
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/// shared configuration between Web3Rpcs
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// TODO: no String, only &str
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#[derive(Clone, Debug, Default, Deserialize, PartialEq, Eq)]
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pub struct AppConfig {
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/// Request limit for allowed origins for anonymous users.
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/// These requests get rate limited by IP.
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#[serde(default = "default_allowed_origin_requests_per_period")]
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pub allowed_origin_requests_per_period: HashMap<String, u64>,
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/// erigon defaults to pruning beyond 90,000 blocks
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#[serde(default = "default_archive_depth")]
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pub archive_depth: u64,
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/// EVM chain id. 1 for ETH
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/// TODO: better type for chain_id? max of `u64::MAX / 2 - 36` <https://github.com/ethereum/EIPs/issues/2294>
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pub chain_id: u64,
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/// Database is used for user data.
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/// Currently supports mysql or compatible backend.
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pub db_url: Option<String>,
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/// minimum size of the connection pool for the database.
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/// If none, the number of workers are used.
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pub db_min_connections: Option<u32>,
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/// maximum size of the connection pool for the database.
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/// If none, the minimum * 2 is used.
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pub db_max_connections: Option<u32>,
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/// Read-only replica of db_url.
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pub db_replica_url: Option<String>,
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/// minimum size of the connection pool for the database replica.
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/// If none, db_min_connections is used.
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pub db_replica_min_connections: Option<u32>,
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/// maximum size of the connection pool for the database replica.
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/// If none, db_max_connections is used.
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pub db_replica_max_connections: Option<u32>,
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/// Default request limit for registered users.
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/// 0 = block all requests
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/// None = allow all requests
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pub default_user_max_requests_per_period: Option<u64>,
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/// Default ERC address for out deposit contract
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pub deposit_factory_contract: Option<Address>,
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/// Default ERC address for out deposit contract
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pub deposit_topic: Option<H256>,
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/// minimum amount to increase eth_estimateGas results
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pub gas_increase_min: Option<U256>,
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/// percentage to increase eth_estimateGas results. 100 == 100%
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pub gas_increase_percent: Option<U256>,
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/// Restrict user registration.
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/// None = no code needed
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pub invite_code: Option<String>,
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/// Optional kafka brokers
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/// Used by /debug/:rpc_key urls for logging requests and responses. No other endpoints log request/response data.
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pub kafka_urls: Option<String>,
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#[serde(default = "default_kafka_protocol")]
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pub kafka_protocol: String,
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/// domain in sign-in-with-ethereum messages
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pub login_domain: Option<String>,
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/// do not serve any requests if the best known block is older than this many seconds.
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pub max_block_age: Option<u64>,
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/// do not serve any requests if the best known block is behind the best known block by more than this many blocks.
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pub max_block_lag: Option<U64>,
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/// Rate limit for bearer token authenticated entrypoints.
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/// This is separate from the rpc limits.
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#[serde(default = "default_bearer_token_max_concurrent_requests")]
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pub bearer_token_max_concurrent_requests: u64,
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/// Rate limit for the login entrypoint.
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/// This is separate from the rpc limits.
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#[serde(default = "default_login_rate_limit_per_period")]
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pub login_rate_limit_per_period: u64,
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/// The soft limit prevents thundering herds as new blocks are seen.
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#[serde(default = "default_min_sum_soft_limit")]
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pub min_sum_soft_limit: u32,
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/// Another knob for preventing thundering herds as new blocks are seen.
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#[serde(default = "default_min_synced_rpcs")]
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pub min_synced_rpcs: usize,
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/// Concurrent request limit for anonymous users.
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/// Some(0) = block all requests
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/// None = allow all requests
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pub public_max_concurrent_requests: Option<usize>,
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/// Request limit for anonymous users.
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/// Some(0) = block all requests
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/// None = allow all requests
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pub public_requests_per_period: Option<u64>,
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/// Salt for hashing recent ips. Not a perfect way to introduce privacy, but better than nothing
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pub public_recent_ips_salt: Option<String>,
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/// RPC responses are cached locally
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#[serde(default = "default_response_cache_max_bytes")]
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pub response_cache_max_bytes: u64,
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/// the stats page url for an anonymous user.
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pub redirect_public_url: Option<String>,
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/// the stats page url for a logged in user. if set, must contain "{rpc_key_id}"
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pub redirect_rpc_key_url: Option<String>,
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/// Optionally send errors to <https://sentry.io>
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pub sentry_url: Option<String>,
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/// Track rate limits in a redis (or compatible backend)
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/// It is okay if this data is lost.
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pub volatile_redis_url: Option<String>,
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/// maximum size of the connection pool for the cache
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/// If none, the minimum * 2 is used
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pub volatile_redis_max_connections: Option<usize>,
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/// influxdb host for stats
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pub influxdb_host: Option<String>,
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/// influxdb org for stats
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pub influxdb_org: Option<String>,
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/// influxdb token for stats
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pub influxdb_token: Option<String>,
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/// influxdb bucket to use for stats
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pub influxdb_bucket: Option<String>,
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/// unknown config options get put here
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#[serde(flatten, default = "HashMap::default")]
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pub extra: HashMap<String, serde_json::Value>,
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}
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fn default_archive_depth() -> u64 {
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90_000
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}
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fn default_allowed_origin_requests_per_period() -> HashMap<String, u64> {
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HashMap::new()
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}
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/// This might cause a thundering herd!
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fn default_min_sum_soft_limit() -> u32 {
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1
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}
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/// Only require 1 server. This might cause a thundering herd!
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fn default_min_synced_rpcs() -> usize {
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1
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}
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/// Having a low amount of concurrent requests for bearer tokens keeps us from hammering the database.
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fn default_bearer_token_max_concurrent_requests() -> u64 {
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2
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}
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/// Having a low amount of requests per period (usually minute) for login is safest.
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fn default_login_rate_limit_per_period() -> u64 {
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10
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}
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fn default_kafka_protocol() -> String {
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"ssl".to_string()
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}
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fn default_response_cache_max_bytes() -> u64 {
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// TODO: default to some percentage of the system?
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// 100 megabytes
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10u64.pow(8)
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}
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/// Configuration for a backend web3 RPC server
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#[derive(Clone, Debug, Default, Deserialize, PartialEq, Eq)]
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pub struct Web3RpcConfig {
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/// simple way to disable a connection without deleting the row
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#[serde(default)]
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pub disabled: bool,
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/// a name used in /status and other user facing messages
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pub display_name: Option<String>,
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/// (deprecated) rpc url
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pub url: Option<String>,
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/// while not absolutely required, a ws:// or wss:// connection will be able to subscribe to head blocks
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pub ws_url: Option<String>,
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/// while not absolutely required, a http:// or https:// connection will allow erigon to stream JSON
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pub http_url: Option<String>,
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/// block data limit. If None, will be queried
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pub block_data_limit: Option<u64>,
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/// the requests per second at which the server starts slowing down
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pub soft_limit: u32,
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/// the requests per second at which the server throws errors (rate limit or otherwise)
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pub hard_limit: Option<u64>,
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/// only use this rpc if everything else is lagging too far. this allows us to ignore fast but very low limit rpcs
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#[serde(default)]
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pub backup: bool,
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/// All else equal, a server with a lower tier receives all requests
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#[serde(default = "default_tier")]
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pub tier: u64,
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/// Subscribe to the firehose of pending transactions
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/// Don't do this with free rpcs
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#[serde(default)]
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pub subscribe_txs: bool,
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/// unknown config options get put here
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#[serde(flatten, default = "HashMap::default")]
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pub extra: HashMap<String, serde_json::Value>,
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}
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fn default_tier() -> u64 {
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0
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}
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impl Web3RpcConfig {
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/// Create a Web3Rpc from config
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/// TODO: move this into Web3Rpc? (just need to make things pub(crate))
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#[allow(clippy::too_many_arguments)]
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pub async fn spawn(
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self,
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name: String,
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db_conn: Option<DatabaseConnection>,
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redis_pool: Option<redis_rate_limiter::RedisPool>,
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chain_id: u64,
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http_client: Option<reqwest::Client>,
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blocks_by_hash_cache: BlocksByHashCache,
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block_sender: Option<flume::Sender<BlockAndRpc>>,
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tx_id_sender: Option<flume::Sender<TxHashAndRpc>>,
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) -> anyhow::Result<(Arc<Web3Rpc>, Web3ProxyJoinHandle<()>)> {
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if !self.extra.is_empty() {
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warn!("unknown Web3RpcConfig fields!: {:?}", self.extra.keys());
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}
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// TODO: get this from config? a helper function? where does this belong?
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let block_interval = match chain_id {
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// ethereum
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1 => Duration::from_secs(12),
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// ethereum-goerli
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5 => Duration::from_secs(12),
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// binance
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56 => Duration::from_secs(3),
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// polygon
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137 => Duration::from_secs(2),
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// fantom
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250 => Duration::from_secs(1),
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// arbitrum
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42161 => Duration::from_millis(500),
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// anything else
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_ => {
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let default = 10;
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warn!(
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"unknown chain_id ({}). defaulting polling every {} seconds",
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chain_id, default
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);
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Duration::from_secs(default)
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}
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};
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Web3Rpc::spawn(
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self,
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name,
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chain_id,
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db_conn,
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http_client,
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redis_pool,
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block_interval,
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blocks_by_hash_cache,
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block_sender,
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tx_id_sender,
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)
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.await
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}
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}
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