2019-03-02 07:59:47 +00:00
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use self::config::Config;
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use self::results::Results;
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use crate::beacon_chain_harness::BeaconChainHarness;
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use beacon_chain::CheckPoint;
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use log::{info, warn};
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use types::*;
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use types::{
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attester_slashing::AttesterSlashingBuilder, proposer_slashing::ProposerSlashingBuilder,
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};
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use yaml_rust::Yaml;
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mod config;
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mod results;
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2019-03-02 09:17:14 +00:00
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mod state_check;
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2019-03-02 07:59:47 +00:00
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mod yaml_helpers;
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2019-03-02 09:17:14 +00:00
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#[derive(Debug)]
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2019-03-02 07:59:47 +00:00
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pub struct Manifest {
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pub results: Results,
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pub config: Config,
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}
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pub struct ExecutionResult {
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pub chain: Vec<CheckPoint>,
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2019-03-02 09:17:14 +00:00
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pub spec: ChainSpec,
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2019-03-02 07:59:47 +00:00
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}
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impl Manifest {
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pub fn from_yaml(test_case: &Yaml) -> Self {
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Self {
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results: Results::from_yaml(&test_case["results"]),
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config: Config::from_yaml(&test_case["config"]),
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}
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}
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fn spec(&self) -> ChainSpec {
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let mut spec = ChainSpec::foundation();
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if let Some(n) = self.config.epoch_length {
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spec.epoch_length = n;
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}
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spec
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}
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pub fn execute(&self) -> ExecutionResult {
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let spec = self.spec();
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let validator_count = self.config.deposits_for_chain_start;
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let slots = self.config.num_slots;
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info!(
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"Building BeaconChainHarness with {} validators...",
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validator_count
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);
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let mut harness = BeaconChainHarness::new(spec, validator_count);
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info!("Starting simulation across {} slots...", slots);
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2019-03-02 09:17:14 +00:00
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// -1 slots because genesis counts as a slot.
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for slot_height in 0..slots - 1 {
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2019-03-02 07:59:47 +00:00
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// Feed deposits to the BeaconChain.
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if let Some(ref deposits) = self.config.deposits {
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for (slot, deposit, keypair) in deposits {
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if *slot == slot_height {
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info!("Including deposit at slot height {}.", slot_height);
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harness.add_deposit(deposit.clone(), Some(keypair.clone()));
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}
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}
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}
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// Feed proposer slashings to the BeaconChain.
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if let Some(ref slashings) = self.config.proposer_slashings {
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for (slot, validator_index) in slashings {
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if *slot == slot_height {
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info!(
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"Including proposer slashing at slot height {} for validator #{}.",
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slot_height, validator_index
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);
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let slashing = build_proposer_slashing(&harness, *validator_index);
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harness.add_proposer_slashing(slashing);
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}
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}
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}
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// Feed attester slashings to the BeaconChain.
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if let Some(ref slashings) = self.config.attester_slashings {
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for (slot, validator_indices) in slashings {
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if *slot == slot_height {
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info!(
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"Including attester slashing at slot height {} for validators {:?}.",
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slot_height, validator_indices
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);
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let slashing =
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build_double_vote_attester_slashing(&harness, &validator_indices[..]);
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harness.add_attester_slashing(slashing);
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}
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}
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}
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// Build a block or skip a slot.
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match self.config.skip_slots {
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Some(ref skip_slots) if skip_slots.contains(&slot_height) => {
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warn!("Skipping slot at height {}.", slot_height);
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harness.increment_beacon_chain_slot();
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}
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_ => {
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info!("Producing block at slot height {}.", slot_height);
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harness.advance_chain_with_block();
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}
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}
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}
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harness.run_fork_choice();
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info!("Test execution complete!");
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2019-03-02 09:20:06 +00:00
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info!("Building chain dump for analysis...");
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2019-03-02 07:59:47 +00:00
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ExecutionResult {
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chain: harness.chain_dump().expect("Chain dump failed."),
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2019-03-02 09:17:14 +00:00
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spec: (*harness.spec).clone(),
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2019-03-02 07:59:47 +00:00
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}
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}
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2019-03-02 09:17:14 +00:00
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pub fn assert_result_valid(&self, execution_result: ExecutionResult) {
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2019-03-02 07:59:47 +00:00
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info!("Verifying test results...");
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2019-03-02 09:17:14 +00:00
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let spec = &execution_result.spec;
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2019-03-02 07:59:47 +00:00
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2019-03-02 09:17:14 +00:00
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if let Some(num_skipped_slots) = self.results.num_skipped_slots {
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2019-03-02 07:59:47 +00:00
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assert_eq!(
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2019-03-02 09:17:14 +00:00
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execution_result.chain.len(),
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self.config.num_slots as usize - num_skipped_slots,
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"actual skipped slots != expected."
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2019-03-02 07:59:47 +00:00
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);
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info!(
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2019-03-02 09:17:14 +00:00
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"OK: Chain length is {} ({} skipped slots).",
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execution_result.chain.len(),
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num_skipped_slots
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2019-03-02 07:59:47 +00:00
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);
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}
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2019-03-02 09:17:14 +00:00
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if let Some(ref state_checks) = self.results.state_checks {
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for checkpoint in &execution_result.chain {
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let state = &checkpoint.beacon_state;
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for state_check in state_checks {
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let adjusted_state_slot =
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state.slot - spec.genesis_epoch.start_slot(spec.epoch_length);
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if state_check.slot == adjusted_state_slot {
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state_check.assert_valid(state, spec);
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}
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}
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}
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}
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2019-03-02 07:59:47 +00:00
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}
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}
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fn build_double_vote_attester_slashing(
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harness: &BeaconChainHarness,
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validator_indices: &[u64],
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) -> AttesterSlashing {
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let signer = |validator_index: u64, message: &[u8], epoch: Epoch, domain: u64| {
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harness
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.validator_sign(validator_index as usize, message, epoch, domain)
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.expect("Unable to sign AttesterSlashing")
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};
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AttesterSlashingBuilder::double_vote(validator_indices, signer, &harness.spec)
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}
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fn build_proposer_slashing(harness: &BeaconChainHarness, validator_index: u64) -> ProposerSlashing {
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let signer = |validator_index: u64, message: &[u8], epoch: Epoch, domain: u64| {
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harness
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.validator_sign(validator_index as usize, message, epoch, domain)
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.expect("Unable to sign AttesterSlashing")
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};
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ProposerSlashingBuilder::double_vote(validator_index, signer, &harness.spec)
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}
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