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Update beacon node crates for new SSZ

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This commit is contained in:
Paul Hauner
2019-05-13 12:07:32 +10:00
parent d9bfbc2657
commit eb62b5842d
8 changed files with 129 additions and 89 deletions
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65
beacon_node/eth2-libp2p/src/behaviour.rs
View File

@@ -49,7 +49,7 @@ impl<TSubstream: AsyncRead + AsyncWrite> NetworkBehaviourEventProcess<GossipsubE
GossipsubEvent::Message(gs_msg) => {
trace!(self.log, "Received GossipEvent"; "msg" => format!("{:?}", gs_msg));
let pubsub_message = match PubsubMessage::ssz_decode(&gs_msg.data, 0) {
let pubsub_message = match PubsubMessage::from_ssz_bytes(&gs_msg.data) {
//TODO: Punish peer on error
Err(e) => {
warn!(
@@ -59,7 +59,7 @@ impl<TSubstream: AsyncRead + AsyncWrite> NetworkBehaviourEventProcess<GossipsubE
);
return;
}
Ok((msg, _index)) => msg,
Ok(msg) => msg,
};
self.events.push(BehaviourEvent::GossipMessage {
@@ -198,33 +198,58 @@ pub enum PubsubMessage {
//TODO: Correctly encode/decode enums. Prefixing with integer for now.
impl Encodable for PubsubMessage {
fn ssz_append(&self, s: &mut SszStream) {
fn is_ssz_fixed_len() -> bool {
false
}
fn ssz_append(&self, buf: &mut Vec<u8>) {
let offset = <u32 as Encodable>::ssz_fixed_len() + <Vec<u8> as Encodable>::ssz_fixed_len();
let mut encoder = ssz::SszEncoder::container(buf, offset);
match self {
PubsubMessage::Block(block_gossip) => {
0u32.ssz_append(s);
block_gossip.ssz_append(s);
encoder.append(&0_u32);
// Encode the gossip as a Vec<u8>;
encoder.append(&block_gossip.as_ssz_bytes());
}
PubsubMessage::Attestation(attestation_gossip) => {
1u32.ssz_append(s);
attestation_gossip.ssz_append(s);
encoder.append(&1_u32);
// Encode the gossip as a Vec<u8>;
encoder.append(&attestation_gossip.as_ssz_bytes());
}
}
encoder.finalize();
}
}
impl Decodable for PubsubMessage {
fn ssz_decode(bytes: &[u8], index: usize) -> Result<(Self, usize), DecodeError> {
let (id, index) = u32::ssz_decode(bytes, index)?;
fn is_ssz_fixed_len() -> bool {
false
}
fn from_ssz_bytes(bytes: &[u8]) -> Result<Self, ssz::DecodeError> {
let mut builder = ssz::SszDecoderBuilder::new(&bytes);
builder.register_type::<u32>()?;
builder.register_type::<Vec<u8>>()?;
let mut decoder = builder.build()?;
let id: u32 = decoder.decode_next()?;
let body: Vec<u8> = decoder.decode_next()?;
match id {
0 => {
let (block, index) = BeaconBlock::ssz_decode(bytes, index)?;
Ok((PubsubMessage::Block(block), index))
}
1 => {
let (attestation, index) = Attestation::ssz_decode(bytes, index)?;
Ok((PubsubMessage::Attestation(attestation), index))
}
_ => Err(DecodeError::Invalid),
0 => Ok(PubsubMessage::Block(BeaconBlock::from_ssz_bytes(&body)?)),
1 => Ok(PubsubMessage::Attestation(Attestation::from_ssz_bytes(
&body,
)?)),
_ => Err(DecodeError::BytesInvalid(
"Invalid PubsubMessage id".to_string(),
)),
}
}
}
@@ -240,9 +265,7 @@ mod test {
let encoded = ssz_encode(&original);
println!("{:?}", encoded);
let (decoded, _i) = PubsubMessage::ssz_decode(&encoded, 0).unwrap();
let decoded = PubsubMessage::from_ssz_bytes(&encoded).unwrap();
assert_eq!(original, decoded);
}

125
beacon_node/eth2-libp2p/src/rpc/protocol.rs
View File

@@ -115,42 +115,40 @@ where
}
}
// NOTE!
//
// This code has not been tested, it is a placeholder until we can update to the new libp2p
// spec.
fn decode(packet: Vec<u8>) -> Result<RPCEvent, DecodeError> {
// decode the header of the rpc
// request/response
let (request, index) = bool::ssz_decode(&packet, 0)?;
let (id, index) = RequestId::ssz_decode(&packet, index)?;
let (method_id, index) = u16::ssz_decode(&packet, index)?;
let mut builder = ssz::SszDecoderBuilder::new(&packet);
builder.register_type::<bool>()?;
builder.register_type::<RequestId>()?;
builder.register_type::<u16>()?;
builder.register_type::<Vec<u8>>()?;
let mut decoder = builder.build()?;
let request: bool = decoder.decode_next()?;
let id: RequestId = decoder.decode_next()?;
let method_id: u16 = decoder.decode_next()?;
let bytes: Vec<u8> = decoder.decode_next()?;
if request {
let body = match RPCMethod::from(method_id) {
RPCMethod::Hello => {
let (hello_body, _index) = HelloMessage::ssz_decode(&packet, index)?;
RPCRequest::Hello(hello_body)
}
RPCMethod::Goodbye => {
let (goodbye_reason, _index) = GoodbyeReason::ssz_decode(&packet, index)?;
RPCRequest::Goodbye(goodbye_reason)
}
RPCMethod::Hello => RPCRequest::Hello(HelloMessage::from_ssz_bytes(&bytes)?),
RPCMethod::Goodbye => RPCRequest::Goodbye(GoodbyeReason::from_ssz_bytes(&bytes)?),
RPCMethod::BeaconBlockRoots => {
let (block_roots_request, _index) =
BeaconBlockRootsRequest::ssz_decode(&packet, index)?;
RPCRequest::BeaconBlockRoots(block_roots_request)
RPCRequest::BeaconBlockRoots(BeaconBlockRootsRequest::from_ssz_bytes(&bytes)?)
}
RPCMethod::BeaconBlockHeaders => {
let (block_headers_request, _index) =
BeaconBlockHeadersRequest::ssz_decode(&packet, index)?;
RPCRequest::BeaconBlockHeaders(block_headers_request)
RPCRequest::BeaconBlockHeaders(BeaconBlockHeadersRequest::from_ssz_bytes(&bytes)?)
}
RPCMethod::BeaconBlockBodies => {
let (block_bodies_request, _index) =
BeaconBlockBodiesRequest::ssz_decode(&packet, index)?;
RPCRequest::BeaconBlockBodies(block_bodies_request)
RPCRequest::BeaconBlockBodies(BeaconBlockBodiesRequest::from_ssz_bytes(&bytes)?)
}
RPCMethod::BeaconChainState => {
let (chain_state_request, _index) =
BeaconChainStateRequest::ssz_decode(&packet, index)?;
RPCRequest::BeaconChainState(chain_state_request)
RPCRequest::BeaconChainState(BeaconChainStateRequest::from_ssz_bytes(&bytes)?)
}
RPCMethod::Unknown => return Err(DecodeError::UnknownRPCMethod),
};
@@ -164,29 +162,24 @@ fn decode(packet: Vec<u8>) -> Result<RPCEvent, DecodeError> {
// we have received a response
else {
let result = match RPCMethod::from(method_id) {
RPCMethod::Hello => {
let (body, _index) = HelloMessage::ssz_decode(&packet, index)?;
RPCResponse::Hello(body)
}
RPCMethod::Goodbye => unreachable!("Should never receive a goodbye response"),
RPCMethod::Hello => RPCResponse::Hello(HelloMessage::from_ssz_bytes(&bytes)?),
RPCMethod::BeaconBlockRoots => {
let (body, _index) = BeaconBlockRootsResponse::ssz_decode(&packet, index)?;
RPCResponse::BeaconBlockRoots(body)
RPCResponse::BeaconBlockRoots(BeaconBlockRootsResponse::from_ssz_bytes(&bytes)?)
}
RPCMethod::BeaconBlockHeaders => {
let (body, _index) = BeaconBlockHeadersResponse::ssz_decode(&packet, index)?;
RPCResponse::BeaconBlockHeaders(body)
RPCResponse::BeaconBlockHeaders(BeaconBlockHeadersResponse::from_ssz_bytes(&bytes)?)
}
RPCMethod::BeaconBlockBodies => {
let (body, _index) = BeaconBlockBodiesResponse::ssz_decode(&packet, index)?;
RPCResponse::BeaconBlockBodies(body)
RPCResponse::BeaconBlockBodies(BeaconBlockBodiesResponse::from_ssz_bytes(&packet)?)
}
RPCMethod::BeaconChainState => {
let (body, _index) = BeaconChainStateResponse::ssz_decode(&packet, index)?;
RPCResponse::BeaconChainState(body)
RPCResponse::BeaconChainState(BeaconChainStateResponse::from_ssz_bytes(&packet)?)
}
// We should never receive a goodbye response; it is invalid.
RPCMethod::Goodbye => return Err(DecodeError::UnknownRPCMethod),
RPCMethod::Unknown => return Err(DecodeError::UnknownRPCMethod),
};
Ok(RPCEvent::Response {
id,
method_id,
@@ -211,34 +204,50 @@ where
}
impl Encodable for RPCEvent {
fn ssz_append(&self, s: &mut SszStream) {
fn is_ssz_fixed_len() -> bool {
false
}
// NOTE!
//
// This code has not been tested, it is a placeholder until we can update to the new libp2p
// spec.
fn ssz_append(&self, buf: &mut Vec<u8>) {
let offset = <bool as Encodable>::ssz_fixed_len()
+ <u16 as Encodable>::ssz_fixed_len()
+ <Vec<u8> as Encodable>::ssz_fixed_len();
let mut encoder = ssz::SszEncoder::container(buf, offset);
match self {
RPCEvent::Request {
id,
method_id,
body,
} => {
s.append(&true);
s.append(id);
s.append(method_id);
encoder.append(&true);
encoder.append(id);
encoder.append(method_id);
// Encode the `body` as a `Vec<u8>`.
match body {
RPCRequest::Hello(body) => {
s.append(body);
encoder.append(&body.as_ssz_bytes());
}
RPCRequest::Goodbye(body) => {
s.append(body);
encoder.append(&body.as_ssz_bytes());
}
RPCRequest::BeaconBlockRoots(body) => {
s.append(body);
encoder.append(&body.as_ssz_bytes());
}
RPCRequest::BeaconBlockHeaders(body) => {
s.append(body);
encoder.append(&body.as_ssz_bytes());
}
RPCRequest::BeaconBlockBodies(body) => {
s.append(body);
encoder.append(&body.as_ssz_bytes());
}
RPCRequest::BeaconChainState(body) => {
s.append(body);
encoder.append(&body.as_ssz_bytes());
}
}
}
@@ -247,28 +256,32 @@ impl Encodable for RPCEvent {
method_id,
result,
} => {
s.append(&false);
s.append(id);
s.append(method_id);
encoder.append(&true);
encoder.append(id);
encoder.append(method_id);
match result {
RPCResponse::Hello(response) => {
s.append(response);
encoder.append(&response.as_ssz_bytes());
}
RPCResponse::BeaconBlockRoots(response) => {
s.append(response);
encoder.append(&response.as_ssz_bytes());
}
RPCResponse::BeaconBlockHeaders(response) => {
s.append(response);
encoder.append(&response.as_ssz_bytes());
}
RPCResponse::BeaconBlockBodies(response) => {
s.append(response);
encoder.append(&response.as_ssz_bytes());
}
RPCResponse::BeaconChainState(response) => {
s.append(response);
encoder.append(&response.as_ssz_bytes());
}
}
}
}
// Finalize the encoder, writing to `buf`.
encoder.finalize();
}
}