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authorPéter Szilágyi <peterke@gmail.com>2015-06-22 01:23:37 +0800
committerPéter Szilágyi <peterke@gmail.com>2015-06-24 23:33:33 +0800
commit6994a3daaa0acfc8431e33da535c85e23ab319e0 (patch)
tree124b792dfa89a7897b2414d156814e2c56cd0ed0 /p2p/metrics.go
parent821e01b0139eee9bfab9647e4ac1f2d6f1fb01bc (diff)
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p2p: instrument P2P networking layer
Diffstat (limited to 'p2p/metrics.go')
-rw-r--r--p2p/metrics.go49
1 files changed, 49 insertions, 0 deletions
diff --git a/p2p/metrics.go b/p2p/metrics.go
new file mode 100644
index 000000000..fbe5b1e90
--- /dev/null
+++ b/p2p/metrics.go
@@ -0,0 +1,49 @@
+// Contains the meters and timers used by the networking layer.
+
+package p2p
+
+import (
+ "net"
+
+ "github.com/rcrowley/go-metrics"
+)
+
+var (
+ ingressConnectMeter = metrics.GetOrRegisterMeter("p2p/InboundConnects", metrics.DefaultRegistry)
+ ingressTrafficMeter = metrics.GetOrRegisterMeter("p2p/InboundTraffic", metrics.DefaultRegistry)
+ egressConnectMeter = metrics.GetOrRegisterMeter("p2p/OutboundConnects", metrics.DefaultRegistry)
+ egressTrafficMeter = metrics.GetOrRegisterMeter("p2p/OutboundTraffic", metrics.DefaultRegistry)
+)
+
+// meteredConn is a wrapper around a network TCP connection that meters both the
+// inbound and outbound network traffic.
+type meteredConn struct {
+ *net.TCPConn // Network connection to wrap with metering
+}
+
+// newMeteredConn creates a new metered connection, also bumping the ingress or
+// egress connection meter.
+func newMeteredConn(conn net.Conn, ingress bool) net.Conn {
+ if ingress {
+ ingressConnectMeter.Mark(1)
+ } else {
+ egressConnectMeter.Mark(1)
+ }
+ return &meteredConn{conn.(*net.TCPConn)}
+}
+
+// Read delegates a network read to the underlying connection, bumping the ingress
+// traffic meter along the way.
+func (c *meteredConn) Read(b []byte) (n int, err error) {
+ n, err = c.TCPConn.Read(b)
+ ingressTrafficMeter.Mark(int64(n))
+ return
+}
+
+// Write delegates a network write to the underlying connection, bumping the
+// egress traffic meter along the way.
+func (c *meteredConn) Write(b []byte) (n int, err error) {
+ n, err = c.TCPConn.Write(b)
+ egressTrafficMeter.Mark(int64(n))
+ return
+}