mirror of
https://gitlab.com/pulsechaincom/prysm-pulse.git
synced 2025-01-06 01:32:18 +00:00
ae13bb5c83
* begin using tree hash instead of hash for state and blocks * replace with ssz * rem references to vote cache * replace all instances of state/block hash with root * goimports * almost every test in the world fails * goimports * all tests pass, tree hash across repo
87 lines
2.8 KiB
Go
87 lines
2.8 KiB
Go
package client
|
|
|
|
// Validator client proposer functions.
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
|
|
"github.com/opentracing/opentracing-go"
|
|
|
|
ptypes "github.com/gogo/protobuf/types"
|
|
pbp2p "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
|
|
"github.com/prysmaticlabs/prysm/shared/ssz"
|
|
)
|
|
|
|
// ProposeBlock A new beacon block for a given slot. This method collects the
|
|
// previous beacon block, any pending deposits, and ETH1 data from the beacon
|
|
// chain node to construct the new block. The new block is then processed with
|
|
// the state root computation, and finally signed by the validator before being
|
|
// sent back to the beacon node for broadcasting.
|
|
func (v *validator) ProposeBlock(ctx context.Context, slot uint64) {
|
|
span, ctx := opentracing.StartSpanFromContext(ctx, "validator.ProposeBlock")
|
|
defer span.Finish()
|
|
|
|
// 1. Fetch data from Beacon Chain node.
|
|
// Get current head beacon block.
|
|
headBlock, err := v.beaconClient.CanonicalHead(ctx, &ptypes.Empty{})
|
|
if err != nil {
|
|
log.Errorf("Failed to fetch CanonicalHead: %v", err)
|
|
return
|
|
}
|
|
parentTreeHash, err := ssz.TreeHash(headBlock)
|
|
if err != nil {
|
|
log.Errorf("Failed to hash parent block: %v", err)
|
|
return
|
|
}
|
|
|
|
// Get validator ETH1 deposits which have not been included in the beacon
|
|
// chain.
|
|
pDepResp, err := v.beaconClient.PendingDeposits(ctx, &ptypes.Empty{})
|
|
if err != nil {
|
|
log.Errorf("Failed to get pending pendings: %v", err)
|
|
return
|
|
}
|
|
|
|
// Get ETH1 data.
|
|
eth1DataResp, err := v.beaconClient.Eth1Data(ctx, &ptypes.Empty{})
|
|
if err != nil {
|
|
log.Errorf("Failed to get ETH1 data: %v", err)
|
|
return
|
|
}
|
|
|
|
// 2. Construct block.
|
|
block := &pbp2p.BeaconBlock{
|
|
Slot: slot,
|
|
ParentRootHash32: parentTreeHash[:],
|
|
RandaoRevealHash32: nil, // TODO(1366): generate randao reveal from BLS
|
|
Eth1Data: eth1DataResp.Eth1Data,
|
|
Body: &pbp2p.BeaconBlockBody{
|
|
Attestations: v.attestationPool.PendingAttestations(),
|
|
ProposerSlashings: nil, // TODO(1438): Add after operations pool
|
|
AttesterSlashings: nil, // TODO(1438): Add after operations pool
|
|
Deposits: pDepResp.PendingDeposits,
|
|
Exits: nil, // TODO(1323): Add validator exits
|
|
},
|
|
}
|
|
|
|
// 3. Compute state root transition from parent block to the new block.
|
|
resp, err := v.proposerClient.ComputeStateRoot(ctx, block)
|
|
if err != nil {
|
|
log.Errorf("Unable to compute state root: %v", err)
|
|
}
|
|
block.StateRootHash32 = resp.GetStateRoot()
|
|
|
|
// 4. Sign the complete block.
|
|
// TODO(1366): BLS sign block
|
|
block.Signature = nil
|
|
|
|
// 5. Broadcast to the network via beacon chain node.
|
|
blkResp, err := v.proposerClient.ProposeBlock(ctx, block)
|
|
if err != nil {
|
|
log.WithField("error", err).Error("Failed to propose block")
|
|
return
|
|
}
|
|
log.WithField("hash", fmt.Sprintf("%#x", blkResp.BlockHash)).Info("Proposed new beacon block")
|
|
}
|