add necessary code base

1 files changed, 139 insertions, 0 deletions

diff --git a/eth/metrics.go b/eth/metrics.go
new file mode 100644
index 0000000..0533a2a
--- /dev/null
+++ b/eth/metrics.go
@@ -0,0 +1,139 @@
+// Copyright 2015 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package eth
+
+import (
+	"github.com/ethereum/go-ethereum/metrics"
+	"github.com/ethereum/go-ethereum/p2p"
+)
+
+var (
+	propTxnInPacketsMeter     = metrics.NewRegisteredMeter("eth/prop/txns/in/packets", nil)
+	propTxnInTrafficMeter     = metrics.NewRegisteredMeter("eth/prop/txns/in/traffic", nil)
+	propTxnOutPacketsMeter    = metrics.NewRegisteredMeter("eth/prop/txns/out/packets", nil)
+	propTxnOutTrafficMeter    = metrics.NewRegisteredMeter("eth/prop/txns/out/traffic", nil)
+	propHashInPacketsMeter    = metrics.NewRegisteredMeter("eth/prop/hashes/in/packets", nil)
+	propHashInTrafficMeter    = metrics.NewRegisteredMeter("eth/prop/hashes/in/traffic", nil)
+	propHashOutPacketsMeter   = metrics.NewRegisteredMeter("eth/prop/hashes/out/packets", nil)
+	propHashOutTrafficMeter   = metrics.NewRegisteredMeter("eth/prop/hashes/out/traffic", nil)
+	propBlockInPacketsMeter   = metrics.NewRegisteredMeter("eth/prop/blocks/in/packets", nil)
+	propBlockInTrafficMeter   = metrics.NewRegisteredMeter("eth/prop/blocks/in/traffic", nil)
+	propBlockOutPacketsMeter  = metrics.NewRegisteredMeter("eth/prop/blocks/out/packets", nil)
+	propBlockOutTrafficMeter  = metrics.NewRegisteredMeter("eth/prop/blocks/out/traffic", nil)
+	reqHeaderInPacketsMeter   = metrics.NewRegisteredMeter("eth/req/headers/in/packets", nil)
+	reqHeaderInTrafficMeter   = metrics.NewRegisteredMeter("eth/req/headers/in/traffic", nil)
+	reqHeaderOutPacketsMeter  = metrics.NewRegisteredMeter("eth/req/headers/out/packets", nil)
+	reqHeaderOutTrafficMeter  = metrics.NewRegisteredMeter("eth/req/headers/out/traffic", nil)
+	reqBodyInPacketsMeter     = metrics.NewRegisteredMeter("eth/req/bodies/in/packets", nil)
+	reqBodyInTrafficMeter     = metrics.NewRegisteredMeter("eth/req/bodies/in/traffic", nil)
+	reqBodyOutPacketsMeter    = metrics.NewRegisteredMeter("eth/req/bodies/out/packets", nil)
+	reqBodyOutTrafficMeter    = metrics.NewRegisteredMeter("eth/req/bodies/out/traffic", nil)
+	reqStateInPacketsMeter    = metrics.NewRegisteredMeter("eth/req/states/in/packets", nil)
+	reqStateInTrafficMeter    = metrics.NewRegisteredMeter("eth/req/states/in/traffic", nil)
+	reqStateOutPacketsMeter   = metrics.NewRegisteredMeter("eth/req/states/out/packets", nil)
+	reqStateOutTrafficMeter   = metrics.NewRegisteredMeter("eth/req/states/out/traffic", nil)
+	reqReceiptInPacketsMeter  = metrics.NewRegisteredMeter("eth/req/receipts/in/packets", nil)
+	reqReceiptInTrafficMeter  = metrics.NewRegisteredMeter("eth/req/receipts/in/traffic", nil)
+	reqReceiptOutPacketsMeter = metrics.NewRegisteredMeter("eth/req/receipts/out/packets", nil)
+	reqReceiptOutTrafficMeter = metrics.NewRegisteredMeter("eth/req/receipts/out/traffic", nil)
+	miscInPacketsMeter        = metrics.NewRegisteredMeter("eth/misc/in/packets", nil)
+	miscInTrafficMeter        = metrics.NewRegisteredMeter("eth/misc/in/traffic", nil)
+	miscOutPacketsMeter       = metrics.NewRegisteredMeter("eth/misc/out/packets", nil)
+	miscOutTrafficMeter       = metrics.NewRegisteredMeter("eth/misc/out/traffic", nil)
+)
+
+// meteredMsgReadWriter is a wrapper around a p2p.MsgReadWriter, capable of
+// accumulating the above defined metrics based on the data stream contents.
+type meteredMsgReadWriter struct {
+	p2p.MsgReadWriter     // Wrapped message stream to meter
+	version           int // Protocol version to select correct meters
+}
+
+// newMeteredMsgWriter wraps a p2p MsgReadWriter with metering support. If the
+// metrics system is disabled, this function returns the original object.
+func newMeteredMsgWriter(rw p2p.MsgReadWriter) p2p.MsgReadWriter {
+	if !metrics.Enabled {
+		return rw
+	}
+	return &meteredMsgReadWriter{MsgReadWriter: rw}
+}
+
+// Init sets the protocol version used by the stream to know which meters to
+// increment in case of overlapping message ids between protocol versions.
+func (rw *meteredMsgReadWriter) Init(version int) {
+	rw.version = version
+}
+
+func (rw *meteredMsgReadWriter) ReadMsg() (p2p.Msg, error) {
+	// Read the message and short circuit in case of an error
+	msg, err := rw.MsgReadWriter.ReadMsg()
+	if err != nil {
+		return msg, err
+	}
+	// Account for the data traffic
+	packets, traffic := miscInPacketsMeter, miscInTrafficMeter
+	switch {
+	case msg.Code == BlockHeadersMsg:
+		packets, traffic = reqHeaderInPacketsMeter, reqHeaderInTrafficMeter
+	case msg.Code == BlockBodiesMsg:
+		packets, traffic = reqBodyInPacketsMeter, reqBodyInTrafficMeter
+
+	case rw.version >= eth63 && msg.Code == NodeDataMsg:
+		packets, traffic = reqStateInPacketsMeter, reqStateInTrafficMeter
+	case rw.version >= eth63 && msg.Code == ReceiptsMsg:
+		packets, traffic = reqReceiptInPacketsMeter, reqReceiptInTrafficMeter
+
+	case msg.Code == NewBlockHashesMsg:
+		packets, traffic = propHashInPacketsMeter, propHashInTrafficMeter
+	case msg.Code == NewBlockMsg:
+		packets, traffic = propBlockInPacketsMeter, propBlockInTrafficMeter
+	case msg.Code == TxMsg:
+		packets, traffic = propTxnInPacketsMeter, propTxnInTrafficMeter
+	}
+	packets.Mark(1)
+	traffic.Mark(int64(msg.Size))
+
+	return msg, err
+}
+
+func (rw *meteredMsgReadWriter) WriteMsg(msg p2p.Msg) error {
+	// Account for the data traffic
+	packets, traffic := miscOutPacketsMeter, miscOutTrafficMeter
+	switch {
+	case msg.Code == BlockHeadersMsg:
+		packets, traffic = reqHeaderOutPacketsMeter, reqHeaderOutTrafficMeter
+	case msg.Code == BlockBodiesMsg:
+		packets, traffic = reqBodyOutPacketsMeter, reqBodyOutTrafficMeter
+
+	case rw.version >= eth63 && msg.Code == NodeDataMsg:
+		packets, traffic = reqStateOutPacketsMeter, reqStateOutTrafficMeter
+	case rw.version >= eth63 && msg.Code == ReceiptsMsg:
+		packets, traffic = reqReceiptOutPacketsMeter, reqReceiptOutTrafficMeter
+
+	case msg.Code == NewBlockHashesMsg:
+		packets, traffic = propHashOutPacketsMeter, propHashOutTrafficMeter
+	case msg.Code == NewBlockMsg:
+		packets, traffic = propBlockOutPacketsMeter, propBlockOutTrafficMeter
+	case msg.Code == TxMsg:
+		packets, traffic = propTxnOutPacketsMeter, propTxnOutTrafficMeter
+	}
+	packets.Mark(1)
+	traffic.Mark(int64(msg.Size))
+
+	// Send the packet to the p2p layer
+	return rw.MsgReadWriter.WriteMsg(msg)
+}