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WIP: Added POST functionality for pusblish_beacon_block. Currently doesn't compile, struggling with the borrow checker.

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This commit is contained in:
Luke Anderson 2019-09-09 12:54:14 +10:00
parent 99c673045c
commit 0136eb33b0
No known key found for this signature in database
GPG Key ID: 44408169EC61E228
4 changed files with 103 additions and 5 deletions
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1
beacon_node/client/src/lib.rs
View File

@ -215,6 +215,7 @@ where
executor,
beacon_chain.clone(),
network.clone(),
network_send.clone(),
client_config.db_path().expect("unable to read datadir"),
eth2_config.clone(),
&log,

42
beacon_node/rest_api/src/helpers.rs
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@ -1,11 +1,17 @@
use crate::{ApiError, ApiResult};
use beacon_chain::{BeaconChain, BeaconChainTypes};
use bls::PublicKey;
use eth2_libp2p::{PubsubMessage, Topic};
use eth2_libp2p::{BEACON_BLOCK_TOPIC, TOPIC_ENCODING_POSTFIX, TOPIC_PREFIX};
use hex;
use hyper::{Body, Request};
use network::NetworkMessage;
use ssz::Encode;
use std::borrow::BorrowMut;
use std::sync::Arc;
use store::{iter::AncestorIter, Store};
use types::{BeaconState, EthSpec, Hash256, RelativeEpoch, Slot};
use tokio::sync::mpsc;
use types::{BeaconBlock, BeaconState, EthSpec, Hash256, RelativeEpoch, Slot};
/// Parse a slot from a `0x` preixed string.
///
@ -197,6 +203,40 @@ pub fn get_logger_from_request(req: &Request<Body>) -> slog::Logger {
log.to_owned()
}
pub fn publish_beacon_block_to_network<T: BeaconChainTypes + 'static>(
req: &Request<Body>,
block: BeaconBlock<T::EthSpec>,
) -> Result<(), ApiError> {
// Get the network service from the request
let mut network_chan = req
.extensions()
.get::<mpsc::UnboundedSender<NetworkMessage>>()
.expect(
"Should always get the network channel from the request, since we put it in there.",
);
// create the network topic to send on
let topic_string = format!(
"/{}/{}/{}",
TOPIC_PREFIX, BEACON_BLOCK_TOPIC, TOPIC_ENCODING_POSTFIX
);
let topic = Topic::new(topic_string);
let message = PubsubMessage::Block(block.as_ssz_bytes());
// Publish the block to the p2p network via gossipsub.
if let Err(e) = &network_chan.try_send(NetworkMessage::Publish {
topics: vec![topic],
message: message,
}) {
return Err(ApiError::ServerError(format!(
"Unable to send new block to network: {:?}",
e
)));
}
Ok(())
}
#[cfg(test)]
mod test {
use super::*;

8
beacon_node/rest_api/src/lib.rs
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@ -14,6 +14,7 @@ mod url_query;
mod validator;
use beacon_chain::{BeaconChain, BeaconChainTypes};
use client_network::NetworkMessage;
use client_network::Service as NetworkService;
use eth2_config::Eth2Config;
use hyper::rt::Future;
@ -25,6 +26,7 @@ use std::ops::Deref;
use std::path::PathBuf;
use std::sync::Arc;
use tokio::runtime::TaskExecutor;
use tokio::sync::mpsc;
use url_query::UrlQuery;
pub use beacon::{BlockResponse, HeadResponse, StateResponse};
@ -83,6 +85,7 @@ pub fn start_server<T: BeaconChainTypes>(
executor: &TaskExecutor,
beacon_chain: Arc<BeaconChain<T>>,
network_service: Arc<NetworkService<T>>,
network_chan: mpsc::UnboundedSender<NetworkMessage>,
db_path: PathBuf,
eth2_config: Eth2Config,
log: &slog::Logger,
@ -113,6 +116,7 @@ pub fn start_server<T: BeaconChainTypes>(
let beacon_chain = server_bc.clone();
let db_path = db_path.clone();
let network_service = network_service.clone();
let network_chan = network_chan.clone();
let eth2_config = eth2_config.clone();
// Create a simple handler for the router, inject our stateful objects into the request.
@ -126,6 +130,8 @@ pub fn start_server<T: BeaconChainTypes>(
req.extensions_mut().insert::<DBPath>(db_path.clone());
req.extensions_mut()
.insert::<Arc<NetworkService<T>>>(network_service.clone());
req.extensions_mut()
.insert::<mpsc::UnboundedSender<NetworkMessage>>(network_chan.clone());
req.extensions_mut()
.insert::<Arc<Eth2Config>>(eth2_config.clone());
@ -177,7 +183,7 @@ pub fn start_server<T: BeaconChainTypes>(
validator::get_new_beacon_block::<T>(req)
}
(&Method::POST, "/beacon/validator/block") => {
helpers::implementation_pending_response(req)
validator::publish_beacon_block::<T>(req)
}
(&Method::GET, "/beacon/validator/attestation") => {
validator::get_new_attestation::<T>(req)

57
beacon_node/rest_api/src/validator.rs
View File

@ -1,11 +1,14 @@
use super::{success_response, ApiResult};
use crate::{helpers::*, ApiError, UrlQuery};
use beacon_chain::BeaconChainTypes;
use beacon_chain::{BeaconChainTypes, BlockProcessingOutcome};
use bls::{AggregateSignature, PublicKey, Signature};
use hyper::{Body, Request};
use futures::future::Future;
use futures::stream::Stream;
use hyper::{Body, Error, Request};
use serde::{Deserialize, Serialize};
use slog::info;
use types::beacon_state::EthSpec;
use types::{Attestation, BitList, Epoch, RelativeEpoch, Shard, Slot};
use types::{Attestation, BeaconBlock, BitList, Epoch, RelativeEpoch, Shard, Slot};
#[derive(Debug, Serialize, Deserialize)]
pub struct ValidatorDuty {
@ -195,6 +198,54 @@ pub fn get_new_beacon_block<T: BeaconChainTypes + 'static>(req: Request<Body>) -
Ok(success_response(body))
}
/// HTTP Handler to publish a BeaconBlock, which has been signed by a validator.
pub fn publish_beacon_block<T: BeaconChainTypes + 'static>(req: Request<Body>) -> ApiResult {
let log = get_logger_from_request(&req);
let (beacon_chain, _head_state) = get_beacon_chain_from_request::<T>(&req)?;
let (_head, body) = req.into_parts();
let block_future = body
.fold(Vec::new(), |mut acc, chunk| {
acc.extend_from_slice(&*chunk);
futures::future::ok::<_, Error>(acc)
})
.map_err(|e| ApiError::ServerError(format!("Unable parse request body: {:?}", e)))
.and_then(|body| {
let block_result: Result<BeaconBlock<T::EthSpec>, ApiError> =
serde_json::from_slice(&body.as_slice()).map_err(|e| {
ApiError::InvalidQueryParams(format!(
"Unable to deserialize JSON into a BeaconBlock: {:?}",
e
))
});
block_result
});
let block = block_future.wait()?;
match beacon_chain.process_block(block.clone()) {
Ok(BlockProcessingOutcome::Processed {
block_root: block_root,
}) => {
// Block was processed, publish via gossipsub
info!(log, "Processed valid block from API"; "block_slot" => block.slot, "block_root" => format!("{}", block_root));
publish_beacon_block_to_network::<T>(&req, block)?;
}
Ok(outcome) => {
return Err(ApiError::InvalidQueryParams(format!(
"The BeaconBlock could not be processed: {:?}",
outcome
)));
}
Err(e) => {
return Err(ApiError::ServerError(format!(
"Unable to process block: {:?}",
e
)));
}
}
Ok(success_response(Body::empty()))
}
/// HTTP Handler to produce a new Attestation from the current state, ready to be signed by a validator.
pub fn get_new_attestation<T: BeaconChainTypes + 'static>(req: Request<Body>) -> ApiResult {
let (beacon_chain, head_state) = get_beacon_chain_from_request::<T>(&req)?;