lighthouse/beacon_node/eth1/tests/test.rs
Pawan Dhananjay 482695142a Minor fixes (#2038)
Fixes a couple of low hanging fruits.

- Fixes #2037 
- `validators-dir` and `secrets-dir` flags don't really need to depend upon each other
- Fixes #2006 and Fixes #1995
2020-12-03 01:10:28 +00:00

1131 lines
38 KiB
Rust

#![cfg(test)]
use environment::{Environment, EnvironmentBuilder};
use eth1::http::{get_deposit_count, get_deposit_logs_in_range, get_deposit_root, Block, Log};
use eth1::{Config, Service};
use eth1::{DepositCache, DEFAULT_CHAIN_ID, DEFAULT_NETWORK_ID};
use eth1_test_rig::GanacheEth1Instance;
use futures::compat::Future01CompatExt;
use merkle_proof::verify_merkle_proof;
use slog::Logger;
use sloggers::{null::NullLoggerBuilder, Build};
use std::ops::Range;
use std::time::Duration;
use tokio_compat_02::FutureExt;
use tree_hash::TreeHash;
use types::{DepositData, EthSpec, Hash256, Keypair, MainnetEthSpec, MinimalEthSpec, Signature};
use web3::{transports::Http, Web3};
const DEPOSIT_CONTRACT_TREE_DEPTH: usize = 32;
pub fn null_logger() -> Logger {
let log_builder = NullLoggerBuilder;
log_builder.build().expect("should build logger")
}
pub fn new_env() -> Environment<MinimalEthSpec> {
EnvironmentBuilder::minimal()
.multi_threaded_tokio_runtime()
.expect("should start tokio runtime")
.null_logger()
.expect("should start null logger")
.build()
.expect("should build env")
}
fn timeout() -> Duration {
Duration::from_secs(2)
}
fn random_deposit_data() -> DepositData {
let keypair = Keypair::random();
let mut deposit = DepositData {
pubkey: keypair.pk.into(),
withdrawal_credentials: Hash256::zero(),
amount: 32_000_000_000,
signature: Signature::empty().into(),
};
deposit.signature = deposit.create_signature(&keypair.sk, &MainnetEthSpec::default_spec());
deposit
}
/// Blocking operation to get the deposit logs from the `deposit_contract`.
async fn blocking_deposit_logs(eth1: &GanacheEth1Instance, range: Range<u64>) -> Vec<Log> {
get_deposit_logs_in_range(
&eth1.endpoint(),
&eth1.deposit_contract.address(),
range,
timeout(),
)
.await
.expect("should get logs")
}
/// Blocking operation to get the deposit root from the `deposit_contract`.
async fn blocking_deposit_root(eth1: &GanacheEth1Instance, block_number: u64) -> Option<Hash256> {
get_deposit_root(
&eth1.endpoint(),
&eth1.deposit_contract.address(),
block_number,
timeout(),
)
.await
.expect("should get deposit root")
}
/// Blocking operation to get the deposit count from the `deposit_contract`.
async fn blocking_deposit_count(eth1: &GanacheEth1Instance, block_number: u64) -> Option<u64> {
get_deposit_count(
&eth1.endpoint(),
&eth1.deposit_contract.address(),
block_number,
timeout(),
)
.await
.expect("should get deposit count")
}
async fn get_block_number(web3: &Web3<Http>) -> u64 {
web3.eth()
.block_number()
.compat()
.await
.map(|v| v.as_u64())
.expect("should get block number")
}
async fn new_ganache_instance() -> Result<GanacheEth1Instance, String> {
GanacheEth1Instance::new(DEFAULT_NETWORK_ID.into(), DEFAULT_CHAIN_ID.into()).await
}
mod eth1_cache {
use super::*;
use types::{EthSpec, MainnetEthSpec};
#[tokio::test]
async fn simple_scenario() {
async {
let log = null_logger();
for follow_distance in 0..2 {
let eth1 = new_ganache_instance()
.await
.expect("should start eth1 environment");
let deposit_contract = &eth1.deposit_contract;
let web3 = eth1.web3();
let initial_block_number = get_block_number(&web3).await;
let service = Service::new(
Config {
endpoints: vec![eth1.endpoint()],
deposit_contract_address: deposit_contract.address(),
lowest_cached_block_number: initial_block_number,
follow_distance,
..Config::default()
},
log.clone(),
MainnetEthSpec::default_spec(),
);
// Create some blocks and then consume them, performing the test `rounds` times.
for round in 0..2 {
let blocks = 4;
let initial = if round == 0 {
initial_block_number
} else {
service
.blocks()
.read()
.highest_block_number()
.map(|n| n + follow_distance)
.expect("should have a latest block after the first round")
};
for _ in 0..blocks {
eth1.ganache.evm_mine().await.expect("should mine block");
}
let endpoints = service.init_endpoints();
service
.update_deposit_cache(None, &endpoints)
.await
.expect("should update deposit cache");
service
.update_block_cache(None, &endpoints)
.await
.expect("should update block cache");
service
.update_block_cache(None, &endpoints)
.await
.expect("should update cache when nothing has changed");
assert_eq!(
service
.blocks()
.read()
.highest_block_number()
.map(|n| n + follow_distance),
Some(initial + blocks),
"should update {} blocks in round {} (follow {})",
blocks,
round,
follow_distance,
);
}
}
}
.compat()
.await;
}
/// Tests the case where we attempt to download more blocks than will fit in the cache.
#[tokio::test]
async fn big_skip() {
async {
let log = null_logger();
let eth1 = new_ganache_instance()
.await
.expect("should start eth1 environment");
let deposit_contract = &eth1.deposit_contract;
let web3 = eth1.web3();
let cache_len = 4;
let service = Service::new(
Config {
endpoints: vec![eth1.endpoint()],
deposit_contract_address: deposit_contract.address(),
lowest_cached_block_number: get_block_number(&web3).await,
follow_distance: 0,
block_cache_truncation: Some(cache_len),
..Config::default()
},
log,
MainnetEthSpec::default_spec(),
);
let blocks = cache_len * 2;
for _ in 0..blocks {
eth1.ganache.evm_mine().await.expect("should mine block")
}
let endpoints = service.init_endpoints();
service
.update_deposit_cache(None, &endpoints)
.await
.expect("should update deposit cache");
service
.update_block_cache(None, &endpoints)
.await
.expect("should update block cache");
assert_eq!(
service.block_cache_len(),
cache_len,
"should not grow cache beyond target"
);
}
.compat()
.await;
}
/// Tests to ensure that the cache gets pruned when doing multiple downloads smaller than the
/// cache size.
#[tokio::test]
async fn pruning() {
async {
let log = null_logger();
let eth1 = new_ganache_instance()
.await
.expect("should start eth1 environment");
let deposit_contract = &eth1.deposit_contract;
let web3 = eth1.web3();
let cache_len = 4;
let service = Service::new(
Config {
endpoints: vec![eth1.endpoint()],
deposit_contract_address: deposit_contract.address(),
lowest_cached_block_number: get_block_number(&web3).await,
follow_distance: 0,
block_cache_truncation: Some(cache_len),
..Config::default()
},
log,
MainnetEthSpec::default_spec(),
);
for _ in 0..4u8 {
for _ in 0..cache_len / 2 {
eth1.ganache.evm_mine().await.expect("should mine block")
}
let endpoints = service.init_endpoints();
service
.update_deposit_cache(None, &endpoints)
.await
.expect("should update deposit cache");
service
.update_block_cache(None, &endpoints)
.await
.expect("should update block cache");
}
assert_eq!(
service.block_cache_len(),
cache_len,
"should not grow cache beyond target"
);
}
.compat()
.await;
}
#[tokio::test]
async fn double_update() {
async {
let log = null_logger();
let n = 16;
let eth1 = new_ganache_instance()
.await
.expect("should start eth1 environment");
let deposit_contract = &eth1.deposit_contract;
let web3 = eth1.web3();
let service = Service::new(
Config {
endpoints: vec![eth1.endpoint()],
deposit_contract_address: deposit_contract.address(),
lowest_cached_block_number: get_block_number(&web3).await,
follow_distance: 0,
..Config::default()
},
log,
MainnetEthSpec::default_spec(),
);
for _ in 0..n {
eth1.ganache.evm_mine().await.expect("should mine block")
}
let endpoints = service.init_endpoints();
futures::try_join!(
service.update_deposit_cache(None, &endpoints),
service.update_deposit_cache(None, &endpoints)
)
.expect("should perform two simultaneous updates of deposit cache");
futures::try_join!(
service.update_block_cache(None, &endpoints),
service.update_block_cache(None, &endpoints)
)
.expect("should perform two simultaneous updates of block cache");
assert!(service.block_cache_len() >= n, "should grow the cache");
}
.compat()
.await;
}
}
mod deposit_tree {
use super::*;
#[tokio::test]
async fn updating() {
async {
let log = null_logger();
let n = 4;
let eth1 = new_ganache_instance()
.await
.expect("should start eth1 environment");
let deposit_contract = &eth1.deposit_contract;
let web3 = eth1.web3();
let start_block = get_block_number(&web3).await;
let service = Service::new(
Config {
endpoints: vec![eth1.endpoint()],
deposit_contract_address: deposit_contract.address(),
deposit_contract_deploy_block: start_block,
follow_distance: 0,
..Config::default()
},
log,
MainnetEthSpec::default_spec(),
);
for round in 0..3 {
let deposits: Vec<_> = (0..n).map(|_| random_deposit_data()).collect();
for deposit in &deposits {
deposit_contract
.deposit(deposit.clone())
.await
.expect("should perform a deposit");
}
let endpoints = service.init_endpoints();
service
.update_deposit_cache(None, &endpoints)
.await
.expect("should perform update");
service
.update_deposit_cache(None, &endpoints)
.await
.expect("should perform update when nothing has changed");
let first = n * round;
let last = n * (round + 1);
let (_root, local_deposits) = service
.deposits()
.read()
.cache
.get_deposits(first, last, last, 32)
.unwrap_or_else(|_| panic!("should get deposits in round {}", round));
assert_eq!(
local_deposits.len(),
n as usize,
"should get the right number of deposits in round {}",
round
);
assert_eq!(
local_deposits
.iter()
.map(|d| d.data.clone())
.collect::<Vec<_>>(),
deposits.to_vec(),
"obtained deposits should match those submitted in round {}",
round
);
}
}
.compat()
.await;
}
#[tokio::test]
async fn double_update() {
async {
let log = null_logger();
let n = 8;
let eth1 = new_ganache_instance()
.await
.expect("should start eth1 environment");
let deposit_contract = &eth1.deposit_contract;
let web3 = eth1.web3();
let start_block = get_block_number(&web3).await;
let service = Service::new(
Config {
endpoints: vec![eth1.endpoint()],
deposit_contract_address: deposit_contract.address(),
deposit_contract_deploy_block: start_block,
lowest_cached_block_number: start_block,
follow_distance: 0,
..Config::default()
},
log,
MainnetEthSpec::default_spec(),
);
let deposits: Vec<_> = (0..n).map(|_| random_deposit_data()).collect();
for deposit in &deposits {
deposit_contract
.deposit(deposit.clone())
.await
.expect("should perform a deposit");
}
let endpoints = service.init_endpoints();
futures::try_join!(
service.update_deposit_cache(None, &endpoints),
service.update_deposit_cache(None, &endpoints)
)
.expect("should perform two updates concurrently");
assert_eq!(service.deposit_cache_len(), n);
}
.compat()
.await;
}
#[tokio::test]
async fn cache_consistency() {
async {
let n = 8;
let spec = &MainnetEthSpec::default_spec();
let deposits: Vec<_> = (0..n).map(|_| random_deposit_data()).collect();
let eth1 = new_ganache_instance()
.await
.expect("should start eth1 environment");
let deposit_contract = &eth1.deposit_contract;
let web3 = eth1.web3();
let mut deposit_roots = vec![];
let mut deposit_counts = vec![];
// Perform deposits to the smart contract, recording it's state along the way.
for deposit in &deposits {
deposit_contract
.deposit(deposit.clone())
.await
.expect("should perform a deposit");
let block_number = get_block_number(&web3).await;
deposit_roots.push(
blocking_deposit_root(&eth1, block_number)
.await
.expect("should get root if contract exists"),
);
deposit_counts.push(
blocking_deposit_count(&eth1, block_number)
.await
.expect("should get count if contract exists"),
);
}
let mut tree = DepositCache::default();
// Pull all the deposit logs from the contract.
let block_number = get_block_number(&web3).await;
let logs: Vec<_> = blocking_deposit_logs(&eth1, 0..block_number)
.await
.iter()
.map(|raw| raw.to_deposit_log(spec).expect("should parse deposit log"))
.inspect(|log| {
tree.insert_log(log.clone())
.expect("should add consecutive logs");
})
.collect();
// Check the logs for invariants.
for i in 0..logs.len() {
let log = &logs[i];
assert_eq!(
log.deposit_data, deposits[i],
"log {} should have correct deposit data",
i
);
assert_eq!(log.index, i as u64, "log {} should have correct index", i);
}
// For each deposit test some more invariants
for i in 0..n {
// Ensure the deposit count from the smart contract was as expected.
assert_eq!(
deposit_counts[i],
i as u64 + 1,
"deposit count should be accurate"
);
// Ensure that the root from the deposit tree matches what the contract reported.
let (root, deposits) = tree
.get_deposits(0, i as u64, deposit_counts[i], DEPOSIT_CONTRACT_TREE_DEPTH)
.expect("should get deposits");
assert_eq!(
root, deposit_roots[i],
"tree deposit root {} should match the contract",
i
);
// Ensure that the deposits all prove into the root from the smart contract.
let deposit_root = deposit_roots[i];
for (j, deposit) in deposits.iter().enumerate() {
assert!(
verify_merkle_proof(
deposit.data.tree_hash_root(),
&deposit.proof,
DEPOSIT_CONTRACT_TREE_DEPTH + 1,
j,
deposit_root
),
"deposit merkle proof should prove into deposit contract root"
)
}
}
}
.compat()
.await;
}
}
/// Tests for the base HTTP requests and response handlers.
mod http {
use super::*;
use eth1::http::BlockQuery;
async fn get_block(eth1: &GanacheEth1Instance, block_number: u64) -> Block {
eth1::http::get_block(
&eth1.endpoint(),
BlockQuery::Number(block_number),
timeout(),
)
.await
.expect("should get block number")
}
#[tokio::test]
async fn incrementing_deposits() {
async {
let eth1 = new_ganache_instance()
.await
.expect("should start eth1 environment");
let deposit_contract = &eth1.deposit_contract;
let web3 = eth1.web3();
let block_number = get_block_number(&web3).await;
let logs = blocking_deposit_logs(&eth1, 0..block_number).await;
assert_eq!(logs.len(), 0);
let mut old_root = blocking_deposit_root(&eth1, block_number).await;
let mut old_block = get_block(&eth1, block_number).await;
let mut old_block_number = block_number;
assert_eq!(
blocking_deposit_count(&eth1, block_number).await,
Some(0),
"should have deposit count zero"
);
for i in 1..=8 {
eth1.ganache
.increase_time(1)
.await
.expect("should be able to increase time on ganache");
deposit_contract
.deposit(random_deposit_data())
.await
.expect("should perform a deposit");
// Check the logs.
let block_number = get_block_number(&web3).await;
let logs = blocking_deposit_logs(&eth1, 0..block_number).await;
assert_eq!(logs.len(), i, "the number of logs should be as expected");
// Check the deposit count.
assert_eq!(
blocking_deposit_count(&eth1, block_number).await,
Some(i as u64),
"should have a correct deposit count"
);
// Check the deposit root.
let new_root = blocking_deposit_root(&eth1, block_number).await;
assert_ne!(
new_root, old_root,
"deposit root should change with each deposit"
);
old_root = new_root;
// Check the block hash.
let new_block = get_block(&eth1, block_number).await;
assert_ne!(
new_block.hash, old_block.hash,
"block hash should change with each deposit"
);
// Check to ensure the timestamp is increasing
assert!(
old_block.timestamp <= new_block.timestamp,
"block timestamp should increase"
);
old_block = new_block.clone();
// Check the block number.
assert!(
block_number > old_block_number,
"block number should increase"
);
old_block_number = block_number;
// Check to ensure the block root is changing
assert_ne!(
new_root,
Some(new_block.hash),
"the deposit root should be different to the block hash"
);
}
}
.compat()
.await;
}
}
mod fast {
use super::*;
// Adds deposits into deposit cache and matches deposit_count and deposit_root
// with the deposit count and root computed from the deposit cache.
#[tokio::test]
async fn deposit_cache_query() {
async {
let log = null_logger();
let eth1 = new_ganache_instance()
.await
.expect("should start eth1 environment");
let deposit_contract = &eth1.deposit_contract;
let web3 = eth1.web3();
let now = get_block_number(&web3).await;
let service = Service::new(
Config {
endpoints: vec![eth1.endpoint()],
deposit_contract_address: deposit_contract.address(),
deposit_contract_deploy_block: now,
lowest_cached_block_number: now,
follow_distance: 0,
block_cache_truncation: None,
..Config::default()
},
log,
MainnetEthSpec::default_spec(),
);
let n = 10;
let deposits: Vec<_> = (0..n).map(|_| random_deposit_data()).collect();
for deposit in &deposits {
deposit_contract
.deposit(deposit.clone())
.await
.expect("should perform a deposit");
// Mine an extra block between deposits to test for corner cases
eth1.ganache.evm_mine().await.expect("should mine block");
}
let endpoints = service.init_endpoints();
service
.update_deposit_cache(None, &endpoints)
.await
.expect("should perform update");
assert!(
service.deposit_cache_len() >= n,
"should have imported n deposits"
);
for block_num in 0..=get_block_number(&web3).await {
let expected_deposit_count = blocking_deposit_count(&eth1, block_num).await;
let expected_deposit_root = blocking_deposit_root(&eth1, block_num).await;
let deposit_count = service
.deposits()
.read()
.cache
.get_deposit_count_from_cache(block_num);
let deposit_root = service
.deposits()
.read()
.cache
.get_deposit_root_from_cache(block_num);
assert_eq!(
expected_deposit_count, deposit_count,
"deposit count from cache should match queried"
);
assert_eq!(
expected_deposit_root, deposit_root,
"deposit root from cache should match queried"
);
}
}
.compat()
.await;
}
}
mod persist {
use super::*;
#[tokio::test]
async fn test_persist_caches() {
async {
let log = null_logger();
let eth1 = new_ganache_instance()
.await
.expect("should start eth1 environment");
let deposit_contract = &eth1.deposit_contract;
let web3 = eth1.web3();
let now = get_block_number(&web3).await;
let config = Config {
endpoints: vec![eth1.endpoint()],
deposit_contract_address: deposit_contract.address(),
deposit_contract_deploy_block: now,
lowest_cached_block_number: now,
follow_distance: 0,
block_cache_truncation: None,
..Config::default()
};
let service = Service::new(config.clone(), log.clone(), MainnetEthSpec::default_spec());
let n = 10;
let deposits: Vec<_> = (0..n).map(|_| random_deposit_data()).collect();
for deposit in &deposits {
deposit_contract
.deposit(deposit.clone())
.await
.expect("should perform a deposit");
}
let endpoints = service.init_endpoints();
service
.update_deposit_cache(None, &endpoints)
.await
.expect("should perform update");
assert!(
service.deposit_cache_len() >= n,
"should have imported n deposits"
);
let deposit_count = service.deposit_cache_len();
service
.update_block_cache(None, &endpoints)
.await
.expect("should perform update");
assert!(
service.block_cache_len() >= n,
"should have imported n eth1 blocks"
);
let block_count = service.block_cache_len();
let eth1_bytes = service.as_bytes();
// Drop service and recover from bytes
drop(service);
let recovered_service =
Service::from_bytes(&eth1_bytes, config, log, MainnetEthSpec::default_spec())
.unwrap();
assert_eq!(
recovered_service.block_cache_len(),
block_count,
"Should have equal cached blocks as before recovery"
);
assert_eq!(
recovered_service.deposit_cache_len(),
deposit_count,
"Should have equal cached deposits as before recovery"
);
}
.compat()
.await;
}
}
/// Tests for eth1 fallback
mod fallbacks {
use super::*;
use tokio::time::sleep;
#[tokio::test]
async fn test_fallback_when_offline() {
async {
let log = null_logger();
let endpoint2 = new_ganache_instance()
.await
.expect("should start eth1 environment");
let deposit_contract = &endpoint2.deposit_contract;
let initial_block_number = get_block_number(&endpoint2.web3()).await;
// Create some blocks and then consume them, performing the test `rounds` times.
let new_blocks = 4;
for _ in 0..new_blocks {
endpoint2
.ganache
.evm_mine()
.await
.expect("should mine block");
}
let endpoint1 = endpoint2
.ganache
.fork()
.expect("should start eth1 environment");
//mine additional blocks on top of the original endpoint
for _ in 0..new_blocks {
endpoint2
.ganache
.evm_mine()
.await
.expect("should mine block");
}
let service = Service::new(
Config {
endpoints: vec![endpoint1.endpoint(), endpoint2.endpoint()],
deposit_contract_address: deposit_contract.address(),
lowest_cached_block_number: initial_block_number,
follow_distance: 0,
..Config::default()
},
log.clone(),
MainnetEthSpec::default_spec(),
);
let endpoint1_block_number = get_block_number(&endpoint1.web3).await;
//the first call will only query endpoint1
service.update().await.expect("should update deposit cache");
assert_eq!(
service.deposits().read().last_processed_block.unwrap(),
endpoint1_block_number
);
drop(endpoint1);
let endpoint2_block_number = get_block_number(&endpoint2.web3()).await;
assert!(endpoint1_block_number < endpoint2_block_number);
//endpoint1 is offline => query will import blocks from endpoint2
service.update().await.expect("should update deposit cache");
assert_eq!(
service.deposits().read().last_processed_block.unwrap(),
endpoint2_block_number
);
}
.compat()
.await;
}
#[tokio::test]
async fn test_fallback_when_wrong_network_id() {
async {
let log = null_logger();
let correct_network_id: u64 = DEFAULT_NETWORK_ID.into();
let wrong_network_id = correct_network_id + 1;
let endpoint1 = GanacheEth1Instance::new(wrong_network_id, DEFAULT_CHAIN_ID.into())
.await
.expect("should start eth1 environment");
let endpoint2 = new_ganache_instance()
.await
.expect("should start eth1 environment");
let deposit_contract = &endpoint2.deposit_contract;
let initial_block_number = get_block_number(&endpoint2.web3()).await;
// Create some blocks and then consume them, performing the test `rounds` times.
let new_blocks = 4;
for _ in 0..new_blocks {
endpoint1
.ganache
.evm_mine()
.await
.expect("should mine block");
endpoint2
.ganache
.evm_mine()
.await
.expect("should mine block");
}
//additional blocks for endpoint1 to be able to distinguish
for _ in 0..new_blocks {
endpoint1
.ganache
.evm_mine()
.await
.expect("should mine block");
}
let service = Service::new(
Config {
endpoints: vec![endpoint2.endpoint(), endpoint1.endpoint()],
deposit_contract_address: deposit_contract.address(),
lowest_cached_block_number: initial_block_number,
follow_distance: 0,
..Config::default()
},
log.clone(),
MainnetEthSpec::default_spec(),
);
let endpoint1_block_number = get_block_number(&endpoint1.web3()).await;
let endpoint2_block_number = get_block_number(&endpoint2.web3()).await;
assert!(endpoint2_block_number < endpoint1_block_number);
//the call will fallback to endpoint2
service.update().await.expect("should update deposit cache");
assert_eq!(
service.deposits().read().last_processed_block.unwrap(),
endpoint2_block_number
);
}
.compat()
.await;
}
#[tokio::test]
async fn test_fallback_when_wrong_chain_id() {
async {
let log = null_logger();
let correct_chain_id: u64 = DEFAULT_CHAIN_ID.into();
let wrong_chain_id = correct_chain_id + 1;
let endpoint1 = GanacheEth1Instance::new(DEFAULT_NETWORK_ID.into(), wrong_chain_id)
.await
.expect("should start eth1 environment");
let endpoint2 = new_ganache_instance()
.await
.expect("should start eth1 environment");
let deposit_contract = &endpoint2.deposit_contract;
let initial_block_number = get_block_number(&endpoint2.web3()).await;
// Create some blocks and then consume them, performing the test `rounds` times.
let new_blocks = 4;
for _ in 0..new_blocks {
endpoint1
.ganache
.evm_mine()
.await
.expect("should mine block");
endpoint2
.ganache
.evm_mine()
.await
.expect("should mine block");
}
//additional blocks for endpoint1 to be able to distinguish
for _ in 0..new_blocks {
endpoint1
.ganache
.evm_mine()
.await
.expect("should mine block");
}
let service = Service::new(
Config {
endpoints: vec![endpoint2.endpoint(), endpoint1.endpoint()],
deposit_contract_address: deposit_contract.address(),
lowest_cached_block_number: initial_block_number,
follow_distance: 0,
..Config::default()
},
log.clone(),
MainnetEthSpec::default_spec(),
);
let endpoint1_block_number = get_block_number(&endpoint1.web3()).await;
let endpoint2_block_number = get_block_number(&endpoint2.web3()).await;
assert!(endpoint2_block_number < endpoint1_block_number);
//the call will fallback to endpoint2
service.update().await.expect("should update deposit cache");
assert_eq!(
service.deposits().read().last_processed_block.unwrap(),
endpoint2_block_number
);
}
.compat()
.await;
}
#[tokio::test]
async fn test_fallback_when_node_far_behind() {
async {
let log = null_logger();
let endpoint2 = new_ganache_instance()
.await
.expect("should start eth1 environment");
let deposit_contract = &endpoint2.deposit_contract;
let initial_block_number = get_block_number(&endpoint2.web3()).await;
// Create some blocks and then consume them, performing the test `rounds` times.
let new_blocks = 4;
for _ in 0..new_blocks {
endpoint2
.ganache
.evm_mine()
.await
.expect("should mine block");
}
let endpoint1 = endpoint2
.ganache
.fork()
.expect("should start eth1 environment");
let service = Service::new(
Config {
endpoints: vec![endpoint1.endpoint(), endpoint2.endpoint()],
deposit_contract_address: deposit_contract.address(),
lowest_cached_block_number: initial_block_number,
follow_distance: 0,
node_far_behind_seconds: 5,
..Config::default()
},
log.clone(),
MainnetEthSpec::default_spec(),
);
let endpoint1_block_number = get_block_number(&endpoint1.web3).await;
//the first call will only query endpoint1
service.update().await.expect("should update deposit cache");
assert_eq!(
service.deposits().read().last_processed_block.unwrap(),
endpoint1_block_number
);
sleep(Duration::from_secs(7)).await;
//both endpoints don't have recent blocks => should return error
assert!(service.update().await.is_err());
//produce some new blocks on endpoint2
for _ in 0..new_blocks {
endpoint2
.ganache
.evm_mine()
.await
.expect("should mine block");
}
let endpoint2_block_number = get_block_number(&endpoint2.web3()).await;
//endpoint1 is far behind + endpoint2 not => update will import blocks from endpoint2
service.update().await.expect("should update deposit cache");
assert_eq!(
service.deposits().read().last_processed_block.unwrap(),
endpoint2_block_number
);
}
.compat()
.await;
}
}