74c34d1602
* Remove deprecated api_spec.yaml * add prototype for proposer slashing * remove clippy warnings * Add proposer_slashing API * Prototype for attester slashing API call * Fix logic error in operation pool * Finish test for attester_slashing api call * Clean proposer_slashing test * Cargo fmt * Remove useless to_string after format! macro * Cargo fmt * Update book with new api calls * Re-enable proposer slashing verification * Update book with appropriate test example * Fix proposer_slashing test * Update comments and tests for clearer code * Remove extraneous comments * Fix test * Minor fix * Address reviewer comments Co-authored-by: pscott <30843220+pscott@users.noreply.github.com>
571 lines
19 KiB
Rust
571 lines
19 KiB
Rust
use crate::helpers::*;
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use crate::response_builder::ResponseBuilder;
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use crate::validator::get_state_for_epoch;
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use crate::{ApiError, ApiResult, BoxFut, UrlQuery};
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use beacon_chain::{BeaconChain, BeaconChainTypes};
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use futures::{Future, Stream};
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use hyper::{Body, Request};
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use serde::{Deserialize, Serialize};
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use ssz_derive::{Decode, Encode};
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use std::sync::Arc;
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use store::Store;
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use types::{
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AttesterSlashing, BeaconState, CommitteeIndex, EthSpec, Hash256, ProposerSlashing,
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PublicKeyBytes, RelativeEpoch, SignedBeaconBlock, Slot, Validator,
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};
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/// Information about the block and state that are at head of the beacon chain.
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#[derive(Clone, Debug, PartialEq, Serialize, Deserialize, Encode, Decode)]
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pub struct CanonicalHeadResponse {
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pub slot: Slot,
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pub block_root: Hash256,
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pub state_root: Hash256,
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pub finalized_slot: Slot,
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pub finalized_block_root: Hash256,
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pub justified_slot: Slot,
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pub justified_block_root: Hash256,
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pub previous_justified_slot: Slot,
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pub previous_justified_block_root: Hash256,
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}
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/// HTTP handler to return a `BeaconBlock` at a given `root` or `slot`.
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pub fn get_head<T: BeaconChainTypes>(
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req: Request<Body>,
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beacon_chain: Arc<BeaconChain<T>>,
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) -> ApiResult {
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let chain_head = beacon_chain.head()?;
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let head = CanonicalHeadResponse {
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slot: chain_head.beacon_state.slot,
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block_root: chain_head.beacon_block_root,
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state_root: chain_head.beacon_state_root,
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finalized_slot: chain_head
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.beacon_state
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.finalized_checkpoint
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.epoch
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.start_slot(T::EthSpec::slots_per_epoch()),
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finalized_block_root: chain_head.beacon_state.finalized_checkpoint.root,
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justified_slot: chain_head
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.beacon_state
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.current_justified_checkpoint
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.epoch
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.start_slot(T::EthSpec::slots_per_epoch()),
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justified_block_root: chain_head.beacon_state.current_justified_checkpoint.root,
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previous_justified_slot: chain_head
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.beacon_state
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.previous_justified_checkpoint
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.epoch
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.start_slot(T::EthSpec::slots_per_epoch()),
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previous_justified_block_root: chain_head.beacon_state.previous_justified_checkpoint.root,
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};
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ResponseBuilder::new(&req)?.body(&head)
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}
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/// Information about a block that is at the head of a chain. May or may not represent the
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/// canonical head.
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#[derive(Clone, Debug, PartialEq, Serialize, Deserialize, Encode, Decode)]
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pub struct HeadBeaconBlock {
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pub beacon_block_root: Hash256,
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pub beacon_block_slot: Slot,
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}
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/// HTTP handler to return a list of head block roots.
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pub fn get_heads<T: BeaconChainTypes>(
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req: Request<Body>,
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beacon_chain: Arc<BeaconChain<T>>,
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) -> ApiResult {
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let heads = beacon_chain
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.heads()
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.into_iter()
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.map(|(beacon_block_root, beacon_block_slot)| HeadBeaconBlock {
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beacon_block_root,
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beacon_block_slot,
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})
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.collect::<Vec<_>>();
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ResponseBuilder::new(&req)?.body(&heads)
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}
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#[derive(Clone, Debug, PartialEq, Serialize, Deserialize, Encode, Decode)]
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#[serde(bound = "T: EthSpec")]
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pub struct BlockResponse<T: EthSpec> {
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pub root: Hash256,
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pub beacon_block: SignedBeaconBlock<T>,
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}
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/// HTTP handler to return a `SignedBeaconBlock` at a given `root` or `slot`.
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pub fn get_block<T: BeaconChainTypes>(
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req: Request<Body>,
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beacon_chain: Arc<BeaconChain<T>>,
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) -> ApiResult {
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let query_params = ["root", "slot"];
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let (key, value) = UrlQuery::from_request(&req)?.first_of(&query_params)?;
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let block_root = match (key.as_ref(), value) {
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("slot", value) => {
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let target = parse_slot(&value)?;
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block_root_at_slot(&beacon_chain, target)?.ok_or_else(|| {
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ApiError::NotFound(format!(
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"Unable to find SignedBeaconBlock for slot {:?}",
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target
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))
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})?
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}
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("root", value) => parse_root(&value)?,
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_ => return Err(ApiError::ServerError("Unexpected query parameter".into())),
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};
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let block = beacon_chain.store.get_block(&block_root)?.ok_or_else(|| {
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ApiError::NotFound(format!(
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"Unable to find SignedBeaconBlock for root {:?}",
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block_root
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))
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})?;
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let response = BlockResponse {
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root: block_root,
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beacon_block: block,
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};
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ResponseBuilder::new(&req)?.body(&response)
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}
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/// HTTP handler to return a `SignedBeaconBlock` root at a given `slot`.
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pub fn get_block_root<T: BeaconChainTypes>(
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req: Request<Body>,
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beacon_chain: Arc<BeaconChain<T>>,
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) -> ApiResult {
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let slot_string = UrlQuery::from_request(&req)?.only_one("slot")?;
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let target = parse_slot(&slot_string)?;
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let root = block_root_at_slot(&beacon_chain, target)?.ok_or_else(|| {
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ApiError::NotFound(format!(
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"Unable to find SignedBeaconBlock for slot {:?}",
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target
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))
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})?;
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ResponseBuilder::new(&req)?.body(&root)
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}
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/// HTTP handler to return the `Fork` of the current head.
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pub fn get_fork<T: BeaconChainTypes>(
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req: Request<Body>,
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beacon_chain: Arc<BeaconChain<T>>,
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) -> ApiResult {
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ResponseBuilder::new(&req)?.body(&beacon_chain.head()?.beacon_state.fork)
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}
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#[derive(Clone, Debug, PartialEq, Serialize, Deserialize, Encode, Decode)]
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pub struct ValidatorResponse {
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pub pubkey: PublicKeyBytes,
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pub validator_index: Option<usize>,
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pub balance: Option<u64>,
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pub validator: Option<Validator>,
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}
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/// HTTP handler to which accepts a query string of a list of validator pubkeys and maps it to a
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/// `ValidatorResponse`.
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///
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/// This method is limited to as many `pubkeys` that can fit in a URL. See `post_validators` for
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/// doing bulk requests.
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pub fn get_validators<T: BeaconChainTypes>(
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req: Request<Body>,
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beacon_chain: Arc<BeaconChain<T>>,
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) -> ApiResult {
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let query = UrlQuery::from_request(&req)?;
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let validator_pubkeys = query
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.all_of("validator_pubkeys")?
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.iter()
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.map(|validator_pubkey_str| parse_pubkey_bytes(validator_pubkey_str))
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.collect::<Result<Vec<_>, _>>()?;
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let state_root_opt = if let Some((_key, value)) = query.first_of_opt(&["state_root"]) {
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Some(parse_root(&value)?)
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} else {
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None
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};
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let validators =
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validator_responses_by_pubkey(beacon_chain, state_root_opt, validator_pubkeys)?;
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ResponseBuilder::new(&req)?.body(&validators)
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}
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/// HTTP handler to return all validators, each as a `ValidatorResponse`.
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pub fn get_all_validators<T: BeaconChainTypes>(
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req: Request<Body>,
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beacon_chain: Arc<BeaconChain<T>>,
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) -> ApiResult {
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let query = UrlQuery::from_request(&req)?;
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let state_root_opt = if let Some((_key, value)) = query.first_of_opt(&["state_root"]) {
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Some(parse_root(&value)?)
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} else {
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None
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};
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let mut state = get_state_from_root_opt(&beacon_chain, state_root_opt)?;
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state.update_pubkey_cache()?;
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let validators = state
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.validators
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.iter()
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.map(|validator| validator_response_by_pubkey(&state, validator.pubkey.clone()))
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.collect::<Result<Vec<_>, _>>()?;
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ResponseBuilder::new(&req)?.body(&validators)
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}
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/// HTTP handler to return all active validators, each as a `ValidatorResponse`.
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pub fn get_active_validators<T: BeaconChainTypes>(
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req: Request<Body>,
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beacon_chain: Arc<BeaconChain<T>>,
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) -> ApiResult {
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let query = UrlQuery::from_request(&req)?;
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let state_root_opt = if let Some((_key, value)) = query.first_of_opt(&["state_root"]) {
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Some(parse_root(&value)?)
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} else {
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None
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};
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let mut state = get_state_from_root_opt(&beacon_chain, state_root_opt)?;
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state.update_pubkey_cache()?;
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let validators = state
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.validators
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.iter()
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.filter(|validator| validator.is_active_at(state.current_epoch()))
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.map(|validator| validator_response_by_pubkey(&state, validator.pubkey.clone()))
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.collect::<Result<Vec<_>, _>>()?;
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ResponseBuilder::new(&req)?.body(&validators)
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}
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#[derive(Clone, Debug, PartialEq, Serialize, Deserialize, Encode, Decode)]
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pub struct ValidatorRequest {
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/// If set to `None`, uses the canonical head state.
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pub state_root: Option<Hash256>,
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pub pubkeys: Vec<PublicKeyBytes>,
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}
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/// HTTP handler to which accepts a `ValidatorRequest` and returns a `ValidatorResponse` for
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/// each of the given `pubkeys`. When `state_root` is `None`, the canonical head is used.
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///
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/// This method allows for a basically unbounded list of `pubkeys`, where as the `get_validators`
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/// request is limited by the max number of pubkeys you can fit in a URL.
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pub fn post_validators<T: BeaconChainTypes>(
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req: Request<Body>,
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beacon_chain: Arc<BeaconChain<T>>,
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) -> BoxFut {
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let response_builder = ResponseBuilder::new(&req);
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let future = req
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.into_body()
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.concat2()
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.map_err(|e| ApiError::ServerError(format!("Unable to get request body: {:?}", e)))
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.and_then(|chunks| {
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serde_json::from_slice::<ValidatorRequest>(&chunks).map_err(|e| {
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ApiError::BadRequest(format!(
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"Unable to parse JSON into ValidatorRequest: {:?}",
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e
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))
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})
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})
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.and_then(|bulk_request| {
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validator_responses_by_pubkey(
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beacon_chain,
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bulk_request.state_root,
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bulk_request.pubkeys,
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)
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})
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.and_then(|validators| response_builder?.body(&validators));
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Box::new(future)
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}
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/// Returns either the state given by `state_root_opt`, or the canonical head state if it is
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/// `None`.
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fn get_state_from_root_opt<T: BeaconChainTypes>(
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beacon_chain: &BeaconChain<T>,
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state_root_opt: Option<Hash256>,
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) -> Result<BeaconState<T::EthSpec>, ApiError> {
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if let Some(state_root) = state_root_opt {
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beacon_chain
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.get_state(&state_root, None)
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.map_err(|e| {
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ApiError::ServerError(format!(
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"Database error when reading state root {}: {:?}",
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state_root, e
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))
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})?
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.ok_or_else(|| ApiError::NotFound(format!("No state exists with root: {}", state_root)))
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} else {
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Ok(beacon_chain.head()?.beacon_state)
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}
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}
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/// Maps a vec of `validator_pubkey` to a vec of `ValidatorResponse`, using the state at the given
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/// `state_root`. If `state_root.is_none()`, uses the canonial head state.
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fn validator_responses_by_pubkey<T: BeaconChainTypes>(
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beacon_chain: Arc<BeaconChain<T>>,
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state_root_opt: Option<Hash256>,
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validator_pubkeys: Vec<PublicKeyBytes>,
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) -> Result<Vec<ValidatorResponse>, ApiError> {
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let mut state = get_state_from_root_opt(&beacon_chain, state_root_opt)?;
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state.update_pubkey_cache()?;
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validator_pubkeys
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.into_iter()
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.map(|validator_pubkey| validator_response_by_pubkey(&state, validator_pubkey))
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.collect::<Result<Vec<_>, ApiError>>()
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}
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/// Maps a `validator_pubkey` to a `ValidatorResponse`, using the given state.
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///
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/// The provided `state` must have a fully up-to-date pubkey cache.
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fn validator_response_by_pubkey<E: EthSpec>(
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state: &BeaconState<E>,
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validator_pubkey: PublicKeyBytes,
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) -> Result<ValidatorResponse, ApiError> {
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let validator_index_opt = state
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.get_validator_index(&validator_pubkey)
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.map_err(|e| ApiError::ServerError(format!("Unable to read pubkey cache: {:?}", e)))?;
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if let Some(validator_index) = validator_index_opt {
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let balance = state.balances.get(validator_index).ok_or_else(|| {
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ApiError::ServerError(format!("Invalid balances index: {:?}", validator_index))
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})?;
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let validator = state
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.validators
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.get(validator_index)
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.ok_or_else(|| {
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ApiError::ServerError(format!("Invalid validator index: {:?}", validator_index))
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})?
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.clone();
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Ok(ValidatorResponse {
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pubkey: validator_pubkey,
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validator_index: Some(validator_index),
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balance: Some(*balance),
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validator: Some(validator),
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})
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} else {
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Ok(ValidatorResponse {
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pubkey: validator_pubkey,
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validator_index: None,
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balance: None,
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validator: None,
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})
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}
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}
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#[derive(Clone, Debug, PartialEq, Serialize, Deserialize, Encode, Decode)]
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pub struct Committee {
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pub slot: Slot,
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pub index: CommitteeIndex,
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pub committee: Vec<usize>,
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}
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/// HTTP handler
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pub fn get_committees<T: BeaconChainTypes>(
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req: Request<Body>,
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beacon_chain: Arc<BeaconChain<T>>,
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) -> ApiResult {
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let query = UrlQuery::from_request(&req)?;
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let epoch = query.epoch()?;
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let mut state = get_state_for_epoch(&beacon_chain, epoch)?;
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let relative_epoch = RelativeEpoch::from_epoch(state.current_epoch(), epoch).map_err(|e| {
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ApiError::ServerError(format!("Failed to get state suitable for epoch: {:?}", e))
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})?;
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state
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.build_committee_cache(relative_epoch, &beacon_chain.spec)
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.map_err(|e| ApiError::ServerError(format!("Unable to build committee cache: {:?}", e)))?;
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let committees = state
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.get_beacon_committees_at_epoch(relative_epoch)
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.map_err(|e| ApiError::ServerError(format!("Unable to get all committees: {:?}", e)))?
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.into_iter()
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.map(|c| Committee {
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slot: c.slot,
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index: c.index,
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committee: c.committee.to_vec(),
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})
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.collect::<Vec<_>>();
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ResponseBuilder::new(&req)?.body(&committees)
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}
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#[derive(Clone, Debug, PartialEq, Serialize, Deserialize, Encode, Decode)]
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#[serde(bound = "T: EthSpec")]
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pub struct StateResponse<T: EthSpec> {
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pub root: Hash256,
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pub beacon_state: BeaconState<T>,
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}
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/// HTTP handler to return a `BeaconState` at a given `root` or `slot`.
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///
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/// Will not return a state if the request slot is in the future. Will return states higher than
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/// the current head by skipping slots.
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pub fn get_state<T: BeaconChainTypes>(
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req: Request<Body>,
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beacon_chain: Arc<BeaconChain<T>>,
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) -> ApiResult {
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let head_state = beacon_chain.head()?.beacon_state;
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let (key, value) = match UrlQuery::from_request(&req) {
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Ok(query) => {
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// We have *some* parameters, just check them.
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let query_params = ["root", "slot"];
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query.first_of(&query_params)?
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}
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Err(ApiError::BadRequest(_)) => {
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// No parameters provided at all, use current slot.
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(String::from("slot"), head_state.slot.to_string())
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}
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Err(e) => {
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return Err(e);
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}
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};
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let (root, state): (Hash256, BeaconState<T::EthSpec>) = match (key.as_ref(), value) {
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("slot", value) => state_at_slot(&beacon_chain, parse_slot(&value)?)?,
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("root", value) => {
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let root = &parse_root(&value)?;
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let state = beacon_chain
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.store
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.get_state(root, None)?
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.ok_or_else(|| ApiError::NotFound(format!("No state for root: {:?}", root)))?;
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(*root, state)
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}
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_ => return Err(ApiError::ServerError("Unexpected query parameter".into())),
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};
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let response = StateResponse {
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root,
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beacon_state: state,
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};
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ResponseBuilder::new(&req)?.body(&response)
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}
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|
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/// HTTP handler to return a `BeaconState` root at a given `slot`.
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///
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/// Will not return a state if the request slot is in the future. Will return states higher than
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/// the current head by skipping slots.
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pub fn get_state_root<T: BeaconChainTypes>(
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req: Request<Body>,
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beacon_chain: Arc<BeaconChain<T>>,
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) -> ApiResult {
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let slot_string = UrlQuery::from_request(&req)?.only_one("slot")?;
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let slot = parse_slot(&slot_string)?;
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|
let root = state_root_at_slot(&beacon_chain, slot)?;
|
|
|
|
ResponseBuilder::new(&req)?.body(&root)
|
|
}
|
|
|
|
/// HTTP handler to return a `BeaconState` at the genesis block.
|
|
///
|
|
/// This is an undocumented convenience method used during testing. For production, simply do a
|
|
/// state request at slot 0.
|
|
pub fn get_genesis_state<T: BeaconChainTypes>(
|
|
req: Request<Body>,
|
|
beacon_chain: Arc<BeaconChain<T>>,
|
|
) -> ApiResult {
|
|
let (_root, state) = state_at_slot(&beacon_chain, Slot::new(0))?;
|
|
|
|
ResponseBuilder::new(&req)?.body(&state)
|
|
}
|
|
|
|
/// Read the genesis time from the current beacon chain state.
|
|
pub fn get_genesis_time<T: BeaconChainTypes>(
|
|
req: Request<Body>,
|
|
beacon_chain: Arc<BeaconChain<T>>,
|
|
) -> ApiResult {
|
|
ResponseBuilder::new(&req)?.body(&beacon_chain.head()?.beacon_state.genesis_time)
|
|
}
|
|
|
|
pub fn proposer_slashing<T: BeaconChainTypes>(
|
|
req: Request<Body>,
|
|
beacon_chain: Arc<BeaconChain<T>>,
|
|
) -> BoxFut {
|
|
let response_builder = ResponseBuilder::new(&req);
|
|
|
|
let future = req
|
|
.into_body()
|
|
.concat2()
|
|
.map_err(|e| ApiError::ServerError(format!("Unable to get request body: {:?}", e)))
|
|
.and_then(|chunks| {
|
|
serde_json::from_slice::<ProposerSlashing>(&chunks).map_err(|e| {
|
|
ApiError::BadRequest(format!(
|
|
"Unable to parse JSON into ProposerSlashing: {:?}",
|
|
e
|
|
))
|
|
})
|
|
})
|
|
.and_then(move |proposer_slashing| {
|
|
let spec = &beacon_chain.spec;
|
|
let state = &beacon_chain.head().unwrap().beacon_state;
|
|
beacon_chain
|
|
.op_pool
|
|
.insert_proposer_slashing(proposer_slashing, state, spec)
|
|
.map_err(|e| {
|
|
ApiError::BadRequest(format!(
|
|
"Error while inserting proposer slashing: {:?}",
|
|
e
|
|
))
|
|
})
|
|
})
|
|
.and_then(|_| response_builder?.body(&true));
|
|
|
|
Box::new(future)
|
|
}
|
|
|
|
pub fn attester_slashing<T: BeaconChainTypes>(
|
|
req: Request<Body>,
|
|
beacon_chain: Arc<BeaconChain<T>>,
|
|
) -> BoxFut {
|
|
let response_builder = ResponseBuilder::new(&req);
|
|
|
|
let future = req
|
|
.into_body()
|
|
.concat2()
|
|
.map_err(|e| ApiError::ServerError(format!("Unable to get request body: {:?}", e)))
|
|
.and_then(|chunks| {
|
|
serde_json::from_slice::<AttesterSlashing<T::EthSpec>>(&chunks).map_err(|e| {
|
|
ApiError::BadRequest(format!(
|
|
"Unable to parse JSON into AttesterSlashing: {:?}",
|
|
e
|
|
))
|
|
})
|
|
})
|
|
.and_then(move |attester_slashing| {
|
|
let spec = &beacon_chain.spec;
|
|
let state = &beacon_chain.head().unwrap().beacon_state;
|
|
beacon_chain
|
|
.op_pool
|
|
.insert_attester_slashing(attester_slashing, state, spec)
|
|
.map_err(|e| {
|
|
ApiError::BadRequest(format!(
|
|
"Error while inserting attester slashing: {:?}",
|
|
e
|
|
))
|
|
})
|
|
})
|
|
.and_then(|_| response_builder?.body(&true));
|
|
|
|
Box::new(future)
|
|
}
|