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Shift HTTP server heavy-lifting to blocking executor (#1518)

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## Issue Addressed

NA

## Proposed Changes

Shift practically all HTTP endpoint handlers to the blocking executor (some very light tasks are left on the core executor).

## Additional Info

This PR covers the `rest_api` which will soon be refactored to suit the standard API. As such, I've cut a few corners and left some existing issues open in this patch. What I have done here should leave the API in state that is not necessary *exactly* the same, but good enough for us to run validators with. Specifically, the number of blocking workers that can be spawned is unbounded and I have not implemented a queue; this will need to be fixed when we implement the standard API.
This commit is contained in:
Paul Hauner
2020-08-24 03:06:10 +00:00
parent 2bc9115a94
commit c895dc8971
22 changed files with 828 additions and 906 deletions
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41
beacon_node/rest_api/src/consensus.rs
View File

@@ -1,8 +1,7 @@
use crate::helpers::*;
use crate::response_builder::ResponseBuilder;
use crate::{ApiError, ApiResult, UrlQuery};
use beacon_chain::{BeaconChain, BeaconChainTypes};
use hyper::{Body, Request};
use crate::{ApiError, Context, UrlQuery};
use beacon_chain::BeaconChainTypes;
use hyper::Request;
use rest_types::{IndividualVotesRequest, IndividualVotesResponse};
use serde::{Deserialize, Serialize};
use ssz_derive::{Decode, Encode};
@@ -50,38 +49,31 @@ impl Into<VoteCount> for TotalBalances {
/// HTTP handler return a `VoteCount` for some given `Epoch`.
pub fn get_vote_count<T: BeaconChainTypes>(
req: Request<Body>,
beacon_chain: Arc<BeaconChain<T>>,
) -> ApiResult {
req: Request<Vec<u8>>,
ctx: Arc<Context<T>>,
) -> Result<VoteCount, ApiError> {
let query = UrlQuery::from_request(&req)?;
let epoch = query.epoch()?;
// This is the last slot of the given epoch (one prior to the first slot of the next epoch).
let target_slot = (epoch + 1).start_slot(T::EthSpec::slots_per_epoch()) - 1;
let (_root, state) = state_at_slot(&beacon_chain, target_slot)?;
let spec = &beacon_chain.spec;
let (_root, state) = state_at_slot(&ctx.beacon_chain, target_slot)?;
let spec = &ctx.beacon_chain.spec;
let mut validator_statuses = ValidatorStatuses::new(&state, spec)?;
validator_statuses.process_attestations(&state, spec)?;
let report: VoteCount = validator_statuses.total_balances.into();
ResponseBuilder::new(&req)?.body(&report)
Ok(validator_statuses.total_balances.into())
}
pub async fn post_individual_votes<T: BeaconChainTypes>(
req: Request<Body>,
beacon_chain: Arc<BeaconChain<T>>,
) -> ApiResult {
let response_builder = ResponseBuilder::new(&req);
pub fn post_individual_votes<T: BeaconChainTypes>(
req: Request<Vec<u8>>,
ctx: Arc<Context<T>>,
) -> Result<Vec<IndividualVotesResponse>, ApiError> {
let body = req.into_body();
let chunks = hyper::body::to_bytes(body)
.await
.map_err(|e| ApiError::ServerError(format!("Unable to get request body: {:?}", e)))?;
serde_json::from_slice::<IndividualVotesRequest>(&chunks)
serde_json::from_slice::<IndividualVotesRequest>(&body)
.map_err(|e| {
ApiError::BadRequest(format!(
"Unable to parse JSON into ValidatorDutiesRequest: {:?}",
@@ -94,8 +86,8 @@ pub async fn post_individual_votes<T: BeaconChainTypes>(
// This is the last slot of the given epoch (one prior to the first slot of the next epoch).
let target_slot = (epoch + 1).start_slot(T::EthSpec::slots_per_epoch()) - 1;
let (_root, mut state) = state_at_slot(&beacon_chain, target_slot)?;
let spec = &beacon_chain.spec;
let (_root, mut state) = state_at_slot(&ctx.beacon_chain, target_slot)?;
let spec = &ctx.beacon_chain.spec;
let mut validator_statuses = ValidatorStatuses::new(&state, spec)?;
validator_statuses.process_attestations(&state, spec)?;
@@ -135,5 +127,4 @@ pub async fn post_individual_votes<T: BeaconChainTypes>(
})
.collect::<Result<Vec<_>, _>>()
})
.and_then(|votes| response_builder?.body_no_ssz(&votes))
}