371 lines
12 KiB
Rust
371 lines
12 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};
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use ethers::types::{U256, U64};
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use hashbrown::HashMap;
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use migration::sea_orm::prelude::Decimal;
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use sentry::types::Dsn;
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use serde::Deserialize;
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use serde_inline_default::serde_inline_default;
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use std::sync::Arc;
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use std::time::Duration;
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use tokio::sync::mpsc;
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use tracing::warn;
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use ulid::Ulid;
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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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#[serde_inline_default]
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#[derive(Clone, Debug, 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::default")]
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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_inline_default(90_000u64)]
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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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#[serde_inline_default(1u64)]
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pub chain_id: u64,
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/// Cost per computational unit
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// pub cost_per_cu: Decimal,
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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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/// 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_inline_default("ssl".to_string())]
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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 behind the best known block by more than this many blocks.
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pub max_head_block_lag: Option<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_inline_default(10u64)]
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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_inline_default(1u32)]
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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_inline_default(1usize)]
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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_inline_default(10u64.pow(8))]
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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<Dsn>,
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/// Stripe api key for checking validity of webhooks
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pub stripe_whsec_key: Option<String>,
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pub usd_per_cu: Option<Decimal>,
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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, workers * 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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/// influxdb id to use to keep stats from different servers being seen as duplicates of eachother
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/// be careful about this. don't let cardinality get too high!
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/// <https://docs.influxdata.com/influxdb/v2.0/write-data/best-practices/duplicate-points/#add-an-arbitrary-tag>
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#[serde(default = "default_influxdb_id")]
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pub influxdb_id: 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_influxdb_id() -> String {
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match hostname::get() {
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Ok(x) => x.into_string().unwrap_or_else(|hostname| {
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warn!(
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?hostname,
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"hostname could not be converted to string. Using ULID for default influxdb_id"
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);
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Ulid::new().to_string()
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}),
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Err(err) => {
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warn!(
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?err,
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"no hostname for default influxdb_id. Using ULID for default influxdb_id"
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);
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Ulid::new().to_string()
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}
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}
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}
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impl Default for AppConfig {
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fn default() -> Self {
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serde_json::from_str("{}").unwrap()
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}
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}
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/// TODO: we can't query a provider because we need this to create a provider
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pub fn average_block_interval(chain_id: u64) -> Duration {
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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 average_block_interval to {} 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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}
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/// Configuration for a backend web3 RPC server
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#[serde_inline_default]
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#[derive(Clone, Debug, 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 = "Default::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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/// 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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#[serde_inline_default(1u32)]
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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 = "Default::default")]
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pub backup: bool,
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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 = "Default::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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impl Default for Web3RpcConfig {
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fn default() -> Self {
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serde_json::from_str("{}").unwrap()
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}
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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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redis_pool: Option<redis_rate_limiter::RedisPool>,
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chain_id: u64,
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block_interval: Duration,
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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<mpsc::UnboundedSender<BlockAndRpc>>,
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max_head_block_age: Duration,
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) -> anyhow::Result<(Arc<Web3Rpc>, Web3ProxyJoinHandle<()>)> {
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if !self.extra.is_empty() {
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warn!(extra=?self.extra.keys(), "unknown Web3RpcConfig fields!");
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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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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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max_head_block_age,
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)
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.await
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}
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}
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#[cfg(test)]
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mod tests {
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use super::{AppConfig, Web3RpcConfig};
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use serde_json::json;
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#[test]
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fn expected_app_defaults() {
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// a is from serde
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let a: AppConfig = serde_json::from_value(json!({
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"chain_id": 1,
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}))
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.unwrap();
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assert_eq!(a.min_synced_rpcs, 1);
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// b is from Default
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let b: AppConfig = AppConfig {
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// influxdb_id is randomized, so we clone it
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influxdb_id: a.influxdb_id.clone(),
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..Default::default()
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};
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assert_eq!(b.min_synced_rpcs, 1);
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assert_eq!(a, b);
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}
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#[test]
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fn expected_rpc_defaults() {
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let a: Web3RpcConfig = serde_json::from_str("{}").unwrap();
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assert_eq!(a.soft_limit, 1);
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let b: Web3RpcConfig = Default::default();
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assert_eq!(b.soft_limit, 1);
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assert_eq!(a, b);
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}
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}
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