process has NetIOCounters and IOCounters.

process/process_darwin.go

@@ -315,7 +315,7 @@ func (p *Process) Connections() ([]net.ConnectionStat, error) {
 	return net.ConnectionsPid("all", p.Pid)
 }
 
-func (p *Process) IOCounters(pernic bool) ([]net.IOCountersStat, error) {
+func (p *Process) NetIOCounters(pernic bool) ([]net.IOCountersStat, error) {
 	return nil, common.NotImplementedError
 }
 

process/process_freebsd.go

@@ -242,7 +242,7 @@ func (p *Process) Connections() ([]net.ConnectionStat, error) {
 	return nil, common.NotImplementedError
 }
 
-func (p *Process) IOCounters(pernic bool) ([]net.IOCountersStat, error) {
+func (p *Process) NetIOCounters(pernic bool) ([]net.IOCountersStat, error) {
 	return nil, common.NotImplementedError
 }
 

process/process_linux.go

@@ -258,7 +258,7 @@ func (p *Process) Connections() ([]net.ConnectionStat, error) {
 	return net.ConnectionsPid("all", p.Pid)
 }
 
-func (p *Process) IOCounters(pernic bool) ([]net.IOCountersStat, error) {
+func (p *Process) NetIOCounters(pernic bool) ([]net.IOCountersStat, error) {
 	filename := common.HostProc(strconv.Itoa(int(p.Pid)), "net/dev")
 	return net.IOCountersByFile(pernic, filename)
 }

process/process_windows.go

@@ -252,7 +252,7 @@ func (p *Process) Connections() ([]net.ConnectionStat, error) {
 	return nil, common.NotImplementedError
 }
 
-func (p *Process) IOCounters(pernic bool) ([]net.IOCountersStat, error) {
+func (p *Process) NetIOCounters(pernic bool) ([]net.IOCountersStat, error) {
 	return nil, common.NotImplementedError
 }
 

v2migration.sh

@@ -2,6 +2,13 @@
 # 
 # go get golang.org/x/tools/cmd/gorename
 
+#
+# Note:
+#   process has IOCounters() for file IO, and also NetIOCounters() for Net IO.
+#   This scripts replace process.NetIOCounters() to IOCounters().
+#   So you need hand-fixing process.
+
+
 TARGETS=`cat <<EOF
 CPUTimesStat -> TimesStat
 CPUInfoStat -> InfoStat