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eth: start cleaning up old protocol implementation, add metrics

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This commit is contained in:
Péter Szilágyi
2015-06-26 20:42:27 +03:00
parent 393d675690
commit 2c8ed76e01
3 changed files with 105 additions and 39 deletions
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54
eth/handler.go
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@ -163,26 +163,28 @@ func (pm *ProtocolManager) newPeer(pv, nv int, p *p2p.Peer, rw p2p.MsgReadWriter
return newPeer(pv, nv, genesis, current, td, p, rw)
}
// handle is the callback invoked to manage the life cycle of an eth peer. When
// this function terminates, the peer is disconnected.
func (pm *ProtocolManager) handle(p *peer) error {
// Execute the Ethereum handshake.
glog.V(logger.Debug).Infof("%v: peer connected", p)
// Execute the Ethereum handshake
if err := p.handleStatus(); err != nil {
glog.V(logger.Debug).Infof("%v: handshake failed: %v", p, err)
return err
}
// Register the peer locally.
glog.V(logger.Detail).Infoln("Adding peer", p.id)
// Register the peer locally
glog.V(logger.Detail).Infof("%v: adding peer", p)
if err := pm.peers.Register(p); err != nil {
glog.V(logger.Error).Infoln("Addition failed:", err)
glog.V(logger.Error).Infof("%v: addition failed: %v", p, err)
return err
}
defer pm.removePeer(p.id)
// Register the peer in the downloader. If the downloader
// considers it banned, we disconnect.
// Register the peer in the downloader. If the downloader considers it banned, we disconnect
if err := pm.downloader.RegisterPeer(p.id, p.Head(), p.requestHashes, p.requestBlocks); err != nil {
return err
}
// Propagate existing transactions. new transactions appearing
// after this will be sent via broadcasts.
pm.syncTransactions(p)
@ -190,13 +192,17 @@ func (pm *ProtocolManager) handle(p *peer) error {
// main loop. handle incoming messages.
for {
if err := pm.handleMsg(p); err != nil {
glog.V(logger.Debug).Infof("%v: message handling failed: %v", p, err)
return err
}
}
return nil
}
// handleMsg is invoked whenever an inbound message is received from a remote
// peer. The remote connection is torn down upon returning any error.
func (pm *ProtocolManager) handleMsg(p *peer) error {
// Read the next message from the remote peer, and ensure it's fully consumed
msg, err := p.rw.ReadMsg()
if err != nil {
return err
@ -204,23 +210,25 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
if msg.Size > ProtocolMaxMsgSize {
return errResp(ErrMsgTooLarge, "%v > %v", msg.Size, ProtocolMaxMsgSize)
}
// make sure that the payload has been fully consumed
defer msg.Discard()
// Handle the message depending on its contents
switch msg.Code {
case StatusMsg:
return errResp(ErrExtraStatusMsg, "uncontrolled status message")
case TxMsg:
// TODO: rework using lazy RLP stream
// Transactions arrived, parse all of them and deliver to the pool
var txs []*types.Transaction
if err := msg.Decode(&txs); err != nil {
return errResp(ErrDecode, "msg %v: %v", msg, err)
}
propTxnInPacketsMeter.Mark(1)
for i, tx := range txs {
if tx == nil {
return errResp(ErrDecode, "transaction %d is nil", i)
}
propTxnInTrafficMeter.Mark(tx.Size().Int64())
jsonlogger.LogJson(&logger.EthTxReceived{
TxHash: tx.Hash().Hex(),
RemoteId: p.ID().String(),
@ -250,12 +258,17 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
return p.sendBlockHashes(hashes)
case BlockHashesMsg:
// A batch of hashes arrived to one of our previous requests
msgStream := rlp.NewStream(msg.Payload, uint64(msg.Size))
reqHashInPacketsMeter.Mark(1)
var hashes []common.Hash
if err := msgStream.Decode(&hashes); err != nil {
break
}
reqHashInTrafficMeter.Mark(int64(32 * len(hashes)))
// Deliver them all to the downloader for queuing
err := pm.downloader.DeliverHashes(p.id, hashes)
if err != nil {
glog.V(logger.Debug).Infoln(err)
@ -299,13 +312,14 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
}
list = list[:len(list)-2] + "]"
glog.Infof("Peer %s: no blocks found for requested hashes %s", p.id, list)
glog.Infof("%v: no blocks found for requested hashes %s", p, list)
}
return p.sendBlocks(blocks)
case BlocksMsg:
// Decode the arrived block message
msgStream := rlp.NewStream(msg.Payload, uint64(msg.Size))
reqBlockInPacketsMeter.Mark(1)
var blocks []*types.Block
if err := msgStream.Decode(&blocks); err != nil {
@ -313,8 +327,9 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
blocks = nil
}
// Update the receive timestamp of each block
for i := 0; i < len(blocks); i++ {
blocks[i].ReceivedAt = msg.ReceivedAt
for _, block := range blocks {
reqBlockInTrafficMeter.Mark(block.Size().Int64())
block.ReceivedAt = msg.ReceivedAt
}
// Filter out any explicitly requested blocks, deliver the rest to the downloader
if blocks := pm.fetcher.Filter(blocks); len(blocks) > 0 {
@ -329,6 +344,9 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
if err := msgStream.Decode(&hashes); err != nil {
break
}
propHashInPacketsMeter.Mark(1)
propHashInTrafficMeter.Mark(int64(32 * len(hashes)))
// Mark the hashes as present at the remote node
for _, hash := range hashes {
p.blockHashes.Add(hash)
@ -351,6 +369,9 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
if err := msg.Decode(&request); err != nil {
return errResp(ErrDecode, "%v: %v", msg, err)
}
propBlockInPacketsMeter.Mark(1)
propBlockInTrafficMeter.Mark(request.Block.Size().Int64())
if err := request.Block.ValidateFields(); err != nil {
return errResp(ErrDecode, "block validation %v: %v", msg, err)
}
@ -404,15 +425,14 @@ func (pm *ProtocolManager) BroadcastBlock(block *types.Block, propagate bool) {
}
}
// BroadcastTx will propagate the block to its connected peers. It will sort
// out which peers do not contain the block in their block set and will do a
// sqrt(peers) to determine the amount of peers we broadcast to.
// BroadcastTx will propagate a transaction to all peers which are not known to
// already have the given transaction.
func (pm *ProtocolManager) BroadcastTx(hash common.Hash, tx *types.Transaction) {
// Broadcast transaction to a batch of peers not knowing about it
peers := pm.peers.PeersWithoutTx(hash)
//FIXME include this again: peers = peers[:int(math.Sqrt(float64(len(peers))))]
for _, peer := range peers {
peer.sendTransaction(tx)
peer.sendTransactions(types.Transactions{tx})
}
glog.V(logger.Detail).Infoln("broadcast tx to", len(peers), "peers")
}