blocksync

package
v0.0.4 Latest Latest
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 Go to latest Published: Jul 18, 2024 License: Apache-2.0 Imports: 20 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	// NOTE: keep up to date with bcproto.BlockResponse
	BlockResponseMessagePrefixSize   = 4
	BlockResponseMessageFieldKeySize = 1
	MaxMsgSize                       = types.MaxBlockSizeBytes +
		BlockResponseMessagePrefixSize +
		BlockResponseMessageFieldKeySize
)
View Source 
const (
	// BlocksyncChannel is a channel for blocks and status updates (`BlockStore` height)
	BlocksyncChannel = byte(0x40)
)
View Source 
const (
	// MetricsSubsystem is a subsystem shared by all metrics exposed by this
	// package.
	MetricsSubsystem = "blocksync"
)

Variables

View Source 
var (
	// ErrNilMessage is returned when provided message is empty
	ErrNilMessage = errors.New("message cannot be nil")
)

Functions

func ValidateMsg 

func ValidateMsg(pb proto.Message) error

ValidateMsg validates a message.

Types

type BlockPool 

type BlockPool struct {
	service.BaseService
	// contains filtered or unexported fields
}

BlockPool keeps track of the block sync peers, block requests and block responses.

func NewBlockPool 

func NewBlockPool(start int64, requestsCh chan<- BlockRequest, errorsCh chan<- peerError) *BlockPool

NewBlockPool returns a new BlockPool with the height equal to start. Block requests and errors will be sent to requestsCh and errorsCh accordingly.

func (*BlockPool) AddBlock 

func (pool *BlockPool) AddBlock(peerID p2p.ID, block *types.Block, extCommit *types.ExtendedCommit, blockSize int) error

AddBlock validates that the block comes from the peer it was expected from and calls the requester to store it.

This requires an extended commit at the same height as the supplied block - the block contains the last commit, but we need the latest commit in case we need to switch over from block sync to consensus at this height. If the height of the extended commit and the height of the block do not match, we do not add the block and return an error. TODO: ensure that blocks come in order for each peer.

func (*BlockPool) GetStatus 

func (pool *BlockPool) GetStatus() (height int64, numPending int32, lenRequesters int)

GetStatus returns pool's height, numPending requests and the number of requesters.

func (*BlockPool) IsCaughtUp 

func (pool *BlockPool) IsCaughtUp() bool

IsCaughtUp returns true if this node is caught up, false - otherwise. TODO: relax conditions, prevent abuse.

func (*BlockPool) MaxPeerHeight 

func (pool *BlockPool) MaxPeerHeight() int64

MaxPeerHeight returns the highest reported height.

func (*BlockPool) OnStart 

func (pool *BlockPool) OnStart() error

OnStart implements service.Service by spawning requesters routine and recording pool's start time.

func (*BlockPool) PeekTwoBlocks 

func (pool *BlockPool) PeekTwoBlocks() (first, second *types.Block, firstExtCommit *types.ExtendedCommit)

PeekTwoBlocks returns blocks at pool.height and pool.height+1. We need to see the second block's Commit to validate the first block. So we peek two blocks at a time. We return an extended commit, containing vote extensions and their associated signatures, as this is critical to consensus in ABCI++ as we switch from block sync to consensus mode.

The caller will verify the commit.

func (*BlockPool) PopRequest 

func (pool *BlockPool) PopRequest()

PopRequest pops the first block at pool.height. It must have been validated by the second Commit from PeekTwoBlocks. TODO(thane): (?) and its corresponding ExtendedCommit.

func (*BlockPool) RedoRequest 

func (pool *BlockPool) RedoRequest(height int64) p2p.ID

RedoRequest invalidates the block at pool.height, Remove the peer and redo request from others. Returns the ID of the removed peer.

func (*BlockPool) RemovePeer 

func (pool *BlockPool) RemovePeer(peerID p2p.ID)

RemovePeer removes the peer with peerID from the pool. If there's no peer with peerID, function is a no-op.

func (*BlockPool) SetPeerRange 

func (pool *BlockPool) SetPeerRange(peerID p2p.ID, base int64, height int64)

SetPeerRange sets the peer's alleged blockchain base and height.

type BlockRequest 

type BlockRequest struct {
	Height int64
	PeerID p2p.ID
}

BlockRequest stores a block request identified by the block Height and the PeerID responsible for delivering the block

type ErrInvalidBase 

type ErrInvalidBase struct {
	Base   int64
	Reason string
}

ErrInvalidBase is returned when peer informs of a status with invalid base

func (ErrInvalidBase) Error 

func (e ErrInvalidBase) Error() string

type ErrInvalidHeight 

type ErrInvalidHeight struct {
	Height int64
	Reason string
}

ErrInvalidBase is returned when peer informs of a status with invalid height

func (ErrInvalidHeight) Error 

func (e ErrInvalidHeight) Error() string

type ErrReactorValidation 

type ErrReactorValidation struct {
	Err error
}

func (ErrReactorValidation) Error 

func (e ErrReactorValidation) Error() string

func (ErrReactorValidation) Unwrap 

func (e ErrReactorValidation) Unwrap() error

type ErrUnknownMessageType 

type ErrUnknownMessageType struct {
	Msg proto.Message
}

func (ErrUnknownMessageType) Error 

func (e ErrUnknownMessageType) Error() string

type Metrics 

type Metrics struct {
	// Whether or not a node is block syncing. 1 if yes, 0 if no.
	Syncing metrics.Gauge
	// Number of transactions in the latest block.
	NumTxs metrics.Gauge
	// Total number of transactions.
	TotalTxs metrics.Gauge
	// Size of the latest block.
	BlockSizeBytes metrics.Gauge
	// The height of the latest block.
	LatestBlockHeight metrics.Gauge
}

Metrics contains metrics exposed by this package.

func NopMetrics 

func NopMetrics() *Metrics

func PrometheusMetrics 

func PrometheusMetrics(namespace string, labelsAndValues ...string) *Metrics

type Reactor 

type Reactor struct {
	p2p.BaseReactor
	// contains filtered or unexported fields
}

Reactor handles long-term catchup syncing.

func NewReactor 

func NewReactor(state sm.State, blockExec *sm.BlockExecutor, store *store.BlockStore,
	blockSync bool, metrics *Metrics, offlineStateSyncHeight int64,
) *Reactor

NewReactor returns new reactor instance.

func (*Reactor) AddPeer 

func (bcR *Reactor) AddPeer(peer p2p.Peer)

AddPeer implements Reactor by sending our state to peer.

func (*Reactor) BroadcastStatusRequest 

func (bcR *Reactor) BroadcastStatusRequest()

BroadcastStatusRequest broadcasts `BlockStore` base and height.

func (*Reactor) GetChannels 

func (bcR *Reactor) GetChannels() []*p2p.ChannelDescriptor

GetChannels implements Reactor

func (*Reactor) OnStart 

func (bcR *Reactor) OnStart() error

OnStart implements service.Service.

func (*Reactor) OnStop 

func (bcR *Reactor) OnStop()

OnStop implements service.Service.

func (*Reactor) Receive 

func (bcR *Reactor) Receive(e p2p.Envelope)

Receive implements Reactor by handling 4 types of messages (look below).

func (*Reactor) RemovePeer 

func (bcR *Reactor) RemovePeer(peer p2p.Peer, _ interface{})

RemovePeer implements Reactor by removing peer from the pool.

func (*Reactor) SetLogger 

func (bcR *Reactor) SetLogger(l log.Logger)

SetLogger implements service.Service by setting the logger on reactor and pool.

func (*Reactor) SwitchToBlockSync 

func (bcR *Reactor) SwitchToBlockSync(state sm.State) error

SwitchToBlockSync is called by the state sync reactor when switching to block sync.

Source Files

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