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contract_runtime.rs
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contract_runtime.rs
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//! Contract Runtime component.
mod config;
mod operations;
mod types;
use std::{
collections::{BTreeMap, HashMap, VecDeque},
fmt::{self, Debug, Formatter},
sync::Arc,
time::Instant,
};
pub use config::Config;
use smallvec::SmallVec;
pub use types::{EraValidatorsRequest, ValidatorWeightsByEraIdRequest};
use datasize::DataSize;
use derive_more::From;
use lmdb::DatabaseFlags;
use prometheus::{self, Histogram, HistogramOpts, IntGauge, Registry};
use thiserror::Error;
use tracing::{debug, error, trace};
use casper_execution_engine::{
core::engine_state::{
self, genesis::GenesisResult, step::EvictItem, DeployItem, EngineConfig, EngineState,
ExecuteRequest, GetEraValidatorsError, GetEraValidatorsRequest, RewardItem, SlashItem,
StepRequest, StepResult,
},
shared::newtypes::{Blake2bHash, CorrelationId},
storage::{
error::lmdb::Error as StorageLmdbError, global_state::lmdb::LmdbGlobalState,
protocol_data_store::lmdb::LmdbProtocolDataStore,
transaction_source::lmdb::LmdbEnvironment, trie_store::lmdb::LmdbTrieStore,
},
};
use casper_types::{
system::auction::ValidatorWeights, ExecutionResult, ProtocolVersion, PublicKey, U512,
};
use crate::{
components::Component,
crypto::hash::Digest,
effect::{
announcements::ContractRuntimeAnnouncement,
requests::{ConsensusRequest, ContractRuntimeRequest, LinearChainRequest, StorageRequest},
EffectBuilder, EffectExt, Effects,
},
types::{
Block, BlockHash, BlockHeader, Chainspec, Deploy, DeployHash, DeployHeader, FinalizedBlock,
NodeId,
},
utils::WithDir,
NodeRng, StorageConfig,
};
/// Contract runtime component event.
#[derive(Debug, From)]
pub enum Event {
/// A request made for the contract runtime component.
#[from]
Request(Box<ContractRuntimeRequest>),
/// Indicates that block has already been finalized and executed in the past.
BlockAlreadyExists(Box<Block>),
/// Indicates that a block is not known yet, and needs to be executed.
BlockIsNew(Box<FinalizedBlock>),
/// Results received by the contract runtime.
#[from]
Result(Box<ContractRuntimeResult>),
}
/// Contract runtime component event.
#[derive(Debug, From)]
pub enum ContractRuntimeResult {
/// Received all requested deploys.
GetDeploysResult {
/// The block that needs the deploys for execution.
finalized_block: FinalizedBlock,
/// Contents of deploys. All deploys are expected to be present in the storage component.
deploys: VecDeque<Deploy>,
},
/// Received a parent result.
GetParentResult {
/// The block that needs the deploys for execution.
finalized_block: FinalizedBlock,
/// Contents of deploys. All deploys are expected to be present in the storage component.
deploys: VecDeque<Deploy>,
/// Parent of the newly finalized block.
/// If it's the first block after Genesis then `parent` is `None`.
parent: Option<(BlockHash, Digest, Digest)>,
},
/// The result of running the step on a switch block.
RunStepResult {
/// State of this request.
state: Box<RequestState>,
/// The result.
result: Result<StepResult, engine_state::Error>,
},
/// Once a block is executed and committed, re-enter evented flow.
ExecutedAndCommitted(Box<RequestState>),
}
/// Convenience trait for ContractRuntime's accepted event types.
pub trait ReactorEventT:
From<Event>
+ From<StorageRequest>
+ From<LinearChainRequest<NodeId>>
+ From<ContractRuntimeRequest>
+ From<ContractRuntimeAnnouncement>
+ From<ConsensusRequest>
+ Send
{
}
impl<REv> ReactorEventT for REv where
REv: From<Event>
+ From<StorageRequest>
+ From<LinearChainRequest<NodeId>>
+ From<ContractRuntimeRequest>
+ From<ContractRuntimeAnnouncement>
+ From<ConsensusRequest>
+ Send
{
}
#[derive(DataSize, Debug)]
struct ExecutedBlockSummary {
hash: BlockHash,
state_root_hash: Digest,
accumulated_seed: Digest,
}
type BlockHeight = u64;
/// The contract runtime components.
#[derive(DataSize)]
pub struct ContractRuntime {
initial_state: InitialState,
engine_state: Arc<EngineState<LmdbGlobalState>>,
metrics: Arc<ContractRuntimeMetrics>,
protocol_version: ProtocolVersion,
/// A mapping from block height to executed block's ID and post-state hash, to allow
/// identification of a parent block's details once a finalized block has been executed.
///
/// The key is a tuple of block's height (it's a linear chain so it's monotonically
/// increasing), and the `ExecutedBlockSummary` is derived from the executed block.
parent_map: HashMap<BlockHeight, ExecutedBlockSummary>,
/// Finalized blocks waiting for their pre-state hash to start executing.
exec_queue: HashMap<BlockHeight, (FinalizedBlock, VecDeque<Deploy>)>,
}
impl Debug for ContractRuntime {
fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
f.debug_struct("ContractRuntime").finish()
}
}
/// Metrics for the contract runtime component.
#[derive(Debug)]
pub struct ContractRuntimeMetrics {
run_execute: Histogram,
apply_effect: Histogram,
commit_upgrade: Histogram,
run_query: Histogram,
commit_step: Histogram,
get_balance: Histogram,
get_validator_weights: Histogram,
get_era_validators: Histogram,
get_era_validator_weights_by_era_id: Histogram,
get_bids: Histogram,
missing_trie_keys: Histogram,
put_trie: Histogram,
read_trie: Histogram,
/// The current chain height.
pub chain_height: IntGauge,
}
/// Value of upper bound of histogram.
const EXPONENTIAL_BUCKET_START: f64 = 0.01;
/// Multiplier of previous upper bound for next bound.
const EXPONENTIAL_BUCKET_FACTOR: f64 = 2.0;
/// Bucket count, with the last bucket going to +Inf which will not be included in the results.
/// - start = 0.01, factor = 2.0, count = 10
/// - start * factor ^ count = 0.01 * 2.0 ^ 10 = 10.24
/// - Values above 10.24 (f64 seconds here) will not fall in a bucket that is kept.
const EXPONENTIAL_BUCKET_COUNT: usize = 10;
const RUN_EXECUTE_NAME: &str = "contract_runtime_run_execute";
const RUN_EXECUTE_HELP: &str = "tracking run of engine_state.run_execute in seconds.";
const APPLY_EFFECT_NAME: &str = "contract_runtime_apply_commit";
const APPLY_EFFECT_HELP: &str = "tracking run of engine_state.apply_effect in seconds.";
const RUN_QUERY_NAME: &str = "contract_runtime_run_query";
const RUN_QUERY_HELP: &str = "tracking run of engine_state.run_query in seconds.";
const COMMIT_STEP_NAME: &str = "contract_runtime_commit_step";
const COMMIT_STEP_HELP: &str = "tracking run of engine_state.commit_step in seconds.";
const COMMIT_UPGRADE_NAME: &str = "contract_runtime_commit_upgrade";
const COMMIT_UPGRADE_HELP: &str = "tracking run of engine_state.commit_upgrade in seconds";
const GET_BALANCE_NAME: &str = "contract_runtime_get_balance";
const GET_BALANCE_HELP: &str = "tracking run of engine_state.get_balance in seconds.";
const GET_VALIDATOR_WEIGHTS_NAME: &str = "contract_runtime_get_validator_weights";
const GET_VALIDATOR_WEIGHTS_HELP: &str =
"tracking run of engine_state.get_validator_weights in seconds.";
const GET_ERA_VALIDATORS_NAME: &str = "contract_runtime_get_era_validators";
const GET_ERA_VALIDATORS_HELP: &str = "tracking run of engine_state.get_era_validators in seconds.";
const GET_ERA_VALIDATORS_WEIGHT_BY_ERA_ID_NAME: &str =
"contract_runtime_get_era_validator_weights_by_era_id";
const GET_ERA_VALIDATORS_WEIGHT_BY_ERA_ID_HELP: &str =
"tracking run of engine_state.get_era_validator_weights_by_era_id in seconds.";
const GET_BIDS_NAME: &str = "contract_runtime_get_bids";
const GET_BIDS_HELP: &str = "tracking run of engine_state.get_bids in seconds.";
const READ_TRIE_NAME: &str = "contract_runtime_read_trie";
const READ_TRIE_HELP: &str = "tracking run of engine_state.read_trie in seconds.";
const PUT_TRIE_NAME: &str = "contract_runtime_put_trie";
const PUT_TRIE_HELP: &str = "tracking run of engine_state.put_trie in seconds.";
const MISSING_TRIE_KEYS_NAME: &str = "contract_runtime_missing_trie_keys";
const MISSING_TRIE_KEYS_HELP: &str = "tracking run of engine_state.missing_trie_keys in seconds.";
/// Create prometheus Histogram and register.
fn register_histogram_metric(
registry: &Registry,
metric_name: &str,
metric_help: &str,
) -> Result<Histogram, prometheus::Error> {
let common_buckets = prometheus::exponential_buckets(
EXPONENTIAL_BUCKET_START,
EXPONENTIAL_BUCKET_FACTOR,
EXPONENTIAL_BUCKET_COUNT,
)?;
let histogram_opts = HistogramOpts::new(metric_name, metric_help).buckets(common_buckets);
let histogram = Histogram::with_opts(histogram_opts)?;
registry.register(Box::new(histogram.clone()))?;
Ok(histogram)
}
impl ContractRuntimeMetrics {
/// Constructor of metrics which creates and registers metrics objects for use.
fn new(registry: &Registry) -> Result<Self, prometheus::Error> {
let chain_height = IntGauge::new("chain_height", "current chain height")?;
registry.register(Box::new(chain_height.clone()))?;
Ok(ContractRuntimeMetrics {
chain_height,
run_execute: register_histogram_metric(registry, RUN_EXECUTE_NAME, RUN_EXECUTE_HELP)?,
apply_effect: register_histogram_metric(
registry,
APPLY_EFFECT_NAME,
APPLY_EFFECT_HELP,
)?,
run_query: register_histogram_metric(registry, RUN_QUERY_NAME, RUN_QUERY_HELP)?,
commit_step: register_histogram_metric(registry, COMMIT_STEP_NAME, COMMIT_STEP_HELP)?,
commit_upgrade: register_histogram_metric(
registry,
COMMIT_UPGRADE_NAME,
COMMIT_UPGRADE_HELP,
)?,
get_balance: register_histogram_metric(registry, GET_BALANCE_NAME, GET_BALANCE_HELP)?,
get_validator_weights: register_histogram_metric(
registry,
GET_VALIDATOR_WEIGHTS_NAME,
GET_VALIDATOR_WEIGHTS_HELP,
)?,
get_era_validators: register_histogram_metric(
registry,
GET_ERA_VALIDATORS_NAME,
GET_ERA_VALIDATORS_HELP,
)?,
get_era_validator_weights_by_era_id: register_histogram_metric(
registry,
GET_ERA_VALIDATORS_WEIGHT_BY_ERA_ID_NAME,
GET_ERA_VALIDATORS_WEIGHT_BY_ERA_ID_HELP,
)?,
get_bids: register_histogram_metric(registry, GET_BIDS_NAME, GET_BIDS_HELP)?,
read_trie: register_histogram_metric(registry, READ_TRIE_NAME, READ_TRIE_HELP)?,
put_trie: register_histogram_metric(registry, PUT_TRIE_NAME, PUT_TRIE_HELP)?,
missing_trie_keys: register_histogram_metric(
registry,
MISSING_TRIE_KEYS_NAME,
MISSING_TRIE_KEYS_HELP,
)?,
})
}
}
impl<REv: ReactorEventT> Component<REv> for ContractRuntime
where
REv: From<Event> + Send,
{
type Event = Event;
type ConstructionError = ConfigError;
fn handle_event(
&mut self,
effect_builder: EffectBuilder<REv>,
_rng: &mut NodeRng,
event: Self::Event,
) -> Effects<Self::Event> {
match event {
Event::Request(request) => {
match *request {
ContractRuntimeRequest::GetProtocolData {
protocol_version,
responder,
} => {
let result = self
.engine_state
.get_protocol_data(protocol_version)
.map(|inner| inner.map(Box::new));
responder.respond(result).ignore()
}
ContractRuntimeRequest::CommitGenesis {
chainspec,
responder,
} => {
let result = self.commit_genesis(chainspec);
responder.respond(result).ignore()
}
ContractRuntimeRequest::Upgrade {
upgrade_config,
responder,
} => {
debug!(?upgrade_config, "upgrade");
let engine_state = Arc::clone(&self.engine_state);
let metrics = Arc::clone(&self.metrics);
async move {
let correlation_id = CorrelationId::new();
let start = Instant::now();
let result =
engine_state.commit_upgrade(correlation_id, *upgrade_config);
metrics
.commit_upgrade
.observe(start.elapsed().as_secs_f64());
debug!(?result, "upgrade result");
responder.respond(result).await
}
.ignore()
}
ContractRuntimeRequest::Query {
query_request,
responder,
} => {
trace!(?query_request, "query");
let engine_state = Arc::clone(&self.engine_state);
let metrics = Arc::clone(&self.metrics);
async move {
let correlation_id = CorrelationId::new();
let start = Instant::now();
let result = engine_state.run_query(correlation_id, query_request);
metrics.run_query.observe(start.elapsed().as_secs_f64());
trace!(?result, "query result");
responder.respond(result).await
}
.ignore()
}
ContractRuntimeRequest::GetBalance {
balance_request,
responder,
} => {
trace!(?balance_request, "balance");
let engine_state = Arc::clone(&self.engine_state);
let metrics = Arc::clone(&self.metrics);
async move {
let correlation_id = CorrelationId::new();
let start = Instant::now();
let result = engine_state.get_purse_balance(
correlation_id,
balance_request.state_hash(),
balance_request.purse_uref(),
);
metrics.get_balance.observe(start.elapsed().as_secs_f64());
trace!(?result, "balance result");
responder.respond(result).await
}
.ignore()
}
ContractRuntimeRequest::IsBonded {
state_root_hash,
era_id,
protocol_version,
public_key: validator_key,
responder,
} => {
trace!(era=%era_id, public_key = %validator_key, "is validator bonded request");
let engine_state = Arc::clone(&self.engine_state);
let metrics = Arc::clone(&self.metrics);
let request =
GetEraValidatorsRequest::new(state_root_hash.into(), protocol_version);
async move {
let correlation_id = CorrelationId::new();
let start = Instant::now();
let era_validators =
engine_state.get_era_validators(correlation_id, request);
metrics
.get_validator_weights
.observe(start.elapsed().as_secs_f64());
trace!(?era_validators, "is validator bonded result");
let is_bonded = era_validators.and_then(|validator_map| {
match validator_map.get(&era_id) {
None => Err(GetEraValidatorsError::EraValidatorsMissing),
Some(era_validators) => {
Ok(era_validators.contains_key(&validator_key))
}
}
});
responder.respond(is_bonded).await
}
.ignore()
}
ContractRuntimeRequest::GetEraValidators { request, responder } => {
trace!(?request, "get era validators request");
let engine_state = Arc::clone(&self.engine_state);
let metrics = Arc::clone(&self.metrics);
// Increment the counter to track the amount of times GetEraValidators was
// requested.
async move {
let correlation_id = CorrelationId::new();
let start = Instant::now();
let era_validators =
engine_state.get_era_validators(correlation_id, request.into());
metrics
.get_era_validators
.observe(start.elapsed().as_secs_f64());
trace!(?era_validators, "get era validators response");
responder.respond(era_validators).await
}
.ignore()
}
ContractRuntimeRequest::GetValidatorWeightsByEraId { request, responder } => {
trace!(?request, "get validator weights by era id request");
let engine_state = Arc::clone(&self.engine_state);
let metrics = Arc::clone(&self.metrics);
// Increment the counter to track the amount of times
// GetEraValidatorsByEraId was requested.
async move {
let correlation_id = CorrelationId::new();
let start = Instant::now();
let era_id = request.era_id();
let era_validators =
engine_state.get_era_validators(correlation_id, request.into());
let result: Result<Option<ValidatorWeights>, GetEraValidatorsError> =
match era_validators {
Ok(era_validators) => {
let validator_weights =
era_validators.get(&era_id).cloned();
Ok(validator_weights)
}
Err(GetEraValidatorsError::EraValidatorsMissing) => Ok(None),
Err(error) => Err(error),
};
metrics
.get_era_validator_weights_by_era_id
.observe(start.elapsed().as_secs_f64());
trace!(?result, "get validator weights by era id response");
responder.respond(result).await
}
.ignore()
}
ContractRuntimeRequest::Step {
step_request,
responder,
} => {
trace!(?step_request, "step request");
let engine_state = Arc::clone(&self.engine_state);
let metrics = Arc::clone(&self.metrics);
async move {
let correlation_id = CorrelationId::new();
let start = Instant::now();
let result = engine_state.commit_step(correlation_id, step_request);
metrics.commit_step.observe(start.elapsed().as_secs_f64());
trace!(?result, "step response");
responder.respond(result).await
}
.ignore()
}
ContractRuntimeRequest::ReadTrie {
trie_key,
responder,
} => {
trace!(?trie_key, "read_trie request");
let engine_state = Arc::clone(&self.engine_state);
let metrics = Arc::clone(&self.metrics);
async move {
let correlation_id = CorrelationId::new();
let start = Instant::now();
let result = engine_state.read_trie(correlation_id, trie_key);
metrics.read_trie.observe(start.elapsed().as_secs_f64());
let result = match result {
Ok(result) => result,
Err(error) => {
error!(?error, "read_trie_request");
None
}
};
trace!(?result, "read_trie response");
responder.respond(result).await
}
.ignore()
}
ContractRuntimeRequest::PutTrie { trie, responder } => {
trace!(?trie, "put_trie request");
let engine_state = Arc::clone(&self.engine_state);
let metrics = Arc::clone(&self.metrics);
async move {
let correlation_id = CorrelationId::new();
let start = Instant::now();
let result = engine_state
.put_trie_and_find_missing_descendant_trie_keys(
correlation_id,
&*trie,
);
metrics.put_trie.observe(start.elapsed().as_secs_f64());
trace!(?result, "put_trie response");
responder.respond(result).await
}
.ignore()
}
ContractRuntimeRequest::ExecuteBlock(finalized_block) => {
debug!(?finalized_block, "execute block");
effect_builder
.get_block_at_height_local(finalized_block.height())
.event(move |maybe_block| {
maybe_block.map(Box::new).map_or_else(
|| Event::BlockIsNew(Box::new(finalized_block)),
Event::BlockAlreadyExists,
)
})
}
ContractRuntimeRequest::GetBids {
get_bids_request,
responder,
} => {
trace!(?get_bids_request, "get bids request");
let engine_state = Arc::clone(&self.engine_state);
let metrics = Arc::clone(&self.metrics);
async move {
let correlation_id = CorrelationId::new();
let start = Instant::now();
let result = engine_state.get_bids(correlation_id, get_bids_request);
metrics.get_bids.observe(start.elapsed().as_secs_f64());
trace!(?result, "get bids result");
responder.respond(result).await
}
.ignore()
}
ContractRuntimeRequest::MissingTrieKeys {
trie_key,
responder,
} => {
trace!(?trie_key, "missing_trie_keys request");
let engine_state = Arc::clone(&self.engine_state);
let metrics = Arc::clone(&self.metrics);
async move {
let correlation_id = CorrelationId::new();
let start = Instant::now();
let result =
engine_state.missing_trie_keys(correlation_id, vec![trie_key]);
metrics.read_trie.observe(start.elapsed().as_secs_f64());
trace!(?result, "missing_trie_keys response");
responder.respond(result).await
}
.ignore()
}
}
}
Event::BlockAlreadyExists(block) => effect_builder
.announce_block_already_executed(*block)
.ignore(),
// If we haven't executed the block before in the past (for example during
// joining), do it now.
Event::BlockIsNew(finalized_block) => {
self.get_deploys(effect_builder, *finalized_block)
}
Event::Result(contract_runtime_result) => match *contract_runtime_result {
ContractRuntimeResult::GetDeploysResult {
finalized_block,
deploys,
} => {
trace!(total = %deploys.len(), ?deploys, "fetched deploys");
self.handle_get_deploys_result(effect_builder, finalized_block, deploys)
}
ContractRuntimeResult::GetParentResult {
finalized_block,
deploys,
parent,
} => {
trace!(parent_found = %parent.is_some(), finalized_height = %finalized_block.height(), "fetched parent");
let parent_summary = parent.map(|(hash, accumulated_seed, state_root_hash)| {
ExecutedBlockSummary {
hash,
state_root_hash,
accumulated_seed,
}
});
self.handle_get_parent_result(
effect_builder,
finalized_block,
deploys,
parent_summary,
)
}
ContractRuntimeResult::RunStepResult { mut state, result } => {
trace!(?result, "run step result");
match result {
Ok(StepResult::Success {
post_state_hash,
next_era_validators,
execution_effect,
}) => {
state.state_root_hash = post_state_hash.into();
let era_id = state.finalized_block.era_id();
let mut effects = effect_builder
.announce_step_success(era_id, execution_effect)
.ignore();
effects.extend(self.finalize_block_execution(
effect_builder,
state,
Some(next_era_validators),
));
effects
}
_ => {
// When step fails, the auction process is broken and we should panic.
error!(?result, "run step failed - internal contract runtime error");
panic!("unable to run step");
}
}
}
ContractRuntimeResult::ExecutedAndCommitted(state) => {
self.execute_all_deploys_or_finalize_block_or_step(effect_builder, state)
}
},
}
}
}
/// Error returned from mis-configuring the contract runtime component.
#[derive(Debug, Error)]
pub enum ConfigError {
/// Error initializing the LMDB environment.
#[error("failed to initialize LMDB environment for contract runtime: {0}")]
Lmdb(#[from] StorageLmdbError),
/// Error initializing metrics.
#[error("failed to initialize metrics for contract runtime: {0}")]
Prometheus(#[from] prometheus::Error),
}
impl ContractRuntime {
pub(crate) fn new(
initial_state_root_hash: Digest,
initial_block_header: Option<&BlockHeader>,
protocol_version: ProtocolVersion,
storage_config: WithDir<StorageConfig>,
contract_runtime_config: &Config,
registry: &Registry,
) -> Result<Self, ConfigError> {
let initial_state = InitialState::new(initial_state_root_hash, initial_block_header);
let path = storage_config.with_dir(storage_config.value().path.clone());
let environment = Arc::new(LmdbEnvironment::new(
path.as_path(),
contract_runtime_config.max_global_state_size(),
contract_runtime_config.max_readers(),
)?);
let trie_store = Arc::new(LmdbTrieStore::new(
&environment,
None,
DatabaseFlags::empty(),
)?);
let protocol_data_store = Arc::new(LmdbProtocolDataStore::new(
&environment,
None,
DatabaseFlags::empty(),
)?);
let global_state = LmdbGlobalState::empty(environment, trie_store, protocol_data_store)?;
let engine_config = EngineConfig::new(contract_runtime_config.max_query_depth());
let engine_state = Arc::new(EngineState::new(global_state, engine_config));
let metrics = Arc::new(ContractRuntimeMetrics::new(registry)?);
Ok(ContractRuntime {
initial_state,
protocol_version,
parent_map: HashMap::new(),
exec_queue: HashMap::new(),
engine_state,
metrics,
})
}
/// Commits a genesis using a chainspec
fn commit_genesis(
&self,
chainspec: Arc<Chainspec>,
) -> Result<GenesisResult, engine_state::Error> {
let correlation_id = CorrelationId::new();
let genesis_config_hash = chainspec.hash();
let protocol_version = chainspec.protocol_config.version;
// Transforms a chainspec into a valid genesis config for execution engine.
let ee_config = chainspec.as_ref().into();
self.engine_state.commit_genesis(
correlation_id,
genesis_config_hash.into(),
protocol_version,
&ee_config,
)
}
/// Retrieve trie keys for the integrity check.
pub fn trie_store_check(&self, trie_keys: Vec<Blake2bHash>) -> Vec<Blake2bHash> {
let correlation_id = CorrelationId::new();
match self
.engine_state
.missing_trie_keys(correlation_id, trie_keys)
{
Ok(keys) => keys,
Err(error) => panic!("Error in retrieving keys for DB check: {:?}", error),
}
}
pub(crate) fn set_initial_state(
&mut self,
initial_state_root_hash: Digest,
initial_block_header: Option<&BlockHeader>,
) {
self.initial_state = InitialState::new(initial_state_root_hash, initial_block_header);
}
/// Adds the "parent map" to the instance of `ContractRuntime`.
///
/// When transitioning from `joiner` to `validator` states we need
/// to carry over the last finalized block so that the next blocks in the linear chain
/// have the state to build on.
pub(crate) fn set_parent_map_from_block(
&mut self,
maybe_last_finalized_block_header: Option<BlockHeader>,
) {
let parent_map = maybe_last_finalized_block_header
.into_iter()
.map(|block_header| {
(
block_header.height(),
ExecutedBlockSummary {
hash: block_header.hash(),
state_root_hash: *block_header.state_root_hash(),
accumulated_seed: block_header.accumulated_seed(),
},
)
})
.collect();
self.parent_map = parent_map;
}
/// Gets the deploy(s) of the given finalized block from storage.
fn get_deploys<REv: ReactorEventT>(
&mut self,
effect_builder: EffectBuilder<REv>,
finalized_block: FinalizedBlock,
) -> Effects<Event> {
let deploy_hashes = finalized_block
.deploys_and_transfers_iter()
.map(DeployHash::from)
.collect::<SmallVec<_>>();
if deploy_hashes.is_empty() {
let result_event = move |_| {
Event::Result(Box::new(ContractRuntimeResult::GetDeploysResult {
finalized_block,
deploys: VecDeque::new(),
}))
};
return effect_builder.immediately().event(result_event);
}
let era_id = finalized_block.era_id();
let height = finalized_block.height();
// Get all deploys in order they appear in the finalized block.
effect_builder
.get_deploys_from_storage(deploy_hashes)
.event(move |result| {
Event::Result(Box::new(ContractRuntimeResult::GetDeploysResult {
finalized_block,
deploys: result
.into_iter()
// Assumes all deploys are present
.map(|maybe_deploy| {
maybe_deploy.unwrap_or_else(|| {
panic!(
"deploy for block in era={} and height={} is expected to exist \
in the storage",
era_id, height
)
})
})
.collect(),
}))
})
}
/// Creates and announces the linear chain block.
fn finalize_block_execution<REv: ReactorEventT>(
&mut self,
effect_builder: EffectBuilder<REv>,
state: Box<RequestState>,
next_era_validator_weights: Option<BTreeMap<PublicKey, U512>>,
) -> Effects<Event> {
// The state hash of the last execute-commit cycle is used as the block's post state
// hash.
let next_height = state.finalized_block.height() + 1;
// Update the metric.
self.metrics
.chain_height
.set(state.finalized_block.height() as i64);
let block = self.create_block(
state.finalized_block,
state.state_root_hash,
next_era_validator_weights,
);
let mut effects = effect_builder
.announce_linear_chain_block(block, state.execution_results)
.ignore();
// If the child is already finalized, start execution.
if let Some((finalized_block, deploys)) = self.exec_queue.remove(&next_height) {
effects.extend(self.handle_get_deploys_result(
effect_builder,
finalized_block,
deploys,
));
}
effects
}
fn execute_all_deploys_or_finalize_block_or_step<REv: ReactorEventT>(
&mut self,
effect_builder: EffectBuilder<REv>,
state: Box<RequestState>,
) -> Effects<Event> {
if state.remaining_deploys.is_empty() {
self.finalize_block_or_step(effect_builder, state)
} else {
self.execute_all_deploys_in_block(state)
}
}
fn finalize_block_or_step<REv: ReactorEventT>(
&mut self,
effect_builder: EffectBuilder<REv>,
state: Box<RequestState>,
) -> Effects<Event> {
let era_end = match state.finalized_block.era_report() {
Some(era_end) => era_end,
// Not at a switch block, so we don't need to have next_era_validators when
// constructing the next block
None => return self.finalize_block_execution(effect_builder, state, None),
};
let reward_items = era_end
.rewards
.iter()
.map(|(vid, &value)| RewardItem::new(vid.clone(), value))
.collect();
let slash_items = era_end
.equivocators
.iter()
.map(|vid| SlashItem::new(vid.clone()))
.collect();
let evict_items = era_end
.inactive_validators
.iter()
.map(|vid| EvictItem::new(vid.clone()))
.collect();
let era_end_timestamp_millis = state.finalized_block.timestamp().millis();
let request = StepRequest {
pre_state_hash: state.state_root_hash.into(),
protocol_version: self.protocol_version,
reward_items,
slash_items,
evict_items,
run_auction: true,
next_era_id: state.finalized_block.era_id().successor(),
era_end_timestamp_millis,
};
effect_builder.run_step(request).event(|result| {
Event::Result(Box::new(ContractRuntimeResult::RunStepResult {
state,
result,
}))
})
}
fn execute_all_deploys_in_block(&mut self, mut state: Box<RequestState>) -> Effects<Event> {
let engine_state = Arc::clone(&self.engine_state);
let metrics = Arc::clone(&self.metrics);
let protocol_version = self.protocol_version;
let block_time = state.finalized_block.timestamp().millis();
let proposer = state.finalized_block.proposer();
async move {
for deploy in state.remaining_deploys.drain(..) {
let deploy_hash = *deploy.id();
let deploy_header = deploy.header().clone();
let deploy_item = DeployItem::from(deploy);
let execute_request = ExecuteRequest::new(
state.state_root_hash.into(),
block_time,
vec![deploy_item],
protocol_version,
proposer.clone(),
);
// TODO: this is currently working coincidentally because we are passing only one
// deploy_item per exec. The execution results coming back from the ee lacks the
// mapping between deploy_hash and execution result, and this outer logic is
// enriching it with the deploy hash. If we were passing multiple deploys per exec
// the relation between the deploy and the execution results would be lost.
let result =
operations::execute(engine_state.clone(), metrics.clone(), execute_request)
.await;
trace!(%deploy_hash, ?result, "deploy execution result");
// As for now a given state is expected to exist.
let execution_results = result.unwrap();
match operations::commit_execution_effects(
engine_state.clone(),
metrics.clone(),
state.state_root_hash,
deploy_hash,
execution_results,
)
.await
{
Ok((state_hash, execution_result)) => {
state
.execution_results
.insert(deploy_hash, (deploy_header, execution_result));
state.state_root_hash = state_hash;
}
// When commit fails we panic as we'll not be able to execute the next
// block.
Err(_err) => panic!("unable to commit"),
}
}
state
}
.event(|state| Event::Result(Box::new(ContractRuntimeResult::ExecutedAndCommitted(state))))
}
fn handle_get_deploys_result<REv: ReactorEventT>(
&mut self,
effect_builder: EffectBuilder<REv>,
finalized_block: FinalizedBlock,
deploys: VecDeque<Deploy>,
) -> Effects<Event> {
if let Some(state_root_hash) = self.pre_state_hash(&finalized_block) {
let state = Box::new(RequestState {
finalized_block,
remaining_deploys: deploys,
execution_results: HashMap::new(),
state_root_hash,
});
self.execute_all_deploys_or_finalize_block_or_step(effect_builder, state)
} else {
// Didn't find parent in the `parent_map` cache.
// Read it from the storage.
let height = finalized_block.height();
effect_builder
.get_block_at_height_local(height - 1)
.event(|parent| {
Event::Result(Box::new(ContractRuntimeResult::GetParentResult {
finalized_block,
deploys,
parent: parent.map(|b| {
(
*b.hash(),
b.header().accumulated_seed(),
*b.state_root_hash(),
)
}),
}))
})
}
}
fn handle_get_parent_result<REv: ReactorEventT>(
&mut self,
effect_builder: EffectBuilder<REv>,
finalized_block: FinalizedBlock,
deploys: VecDeque<Deploy>,
parent: Option<ExecutedBlockSummary>,
) -> Effects<Event> {
match parent {
None => {