forked from intelsdi-x/snap-plugin-collector-use
/
net.go
149 lines (122 loc) · 3.54 KB
/
net.go
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/*
http://www.apache.org/licenses/LICENSE-2.0.txt
Copyright 2016 Intel Corporation
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package use
import (
"fmt"
"regexp"
"time"
"github.com/pkg/errors"
"github.com/intelsdi-x/snap/control/plugin"
"github.com/intelsdi-x/snap/core"
"github.com/shirou/gopsutil/net"
)
// NetStat contains values of Network previous measurments
type NetStat struct {
last net.IOCountersStat
current net.IOCountersStat
ifaceName string
}
// Utilization returns utilization of Memory
func (n *NetStat) Utilization() (float64, error) {
var err error
linkSpeed := getLinkSpeedforIface(n.ifaceName)
n.last, err = getNicStatistic(n.ifaceName)
if err != nil {
return 0.0, err
}
time.Sleep(waitTime)
n.current, err = getNicStatistic(n.ifaceName)
if err != nil {
return 0.0, err
}
value := (n.current.BytesSent - n.last.BytesSent) + (n.current.BytesRecv - n.last.BytesRecv)
return float64(value) / float64(linkSpeed), nil
}
// Saturation returns saturation of Memory
func (n *NetStat) Saturation() (float64, error) {
var err error
linkSpeed := getLinkSpeedforIface(n.ifaceName)
n.last, err = getNicStatistic(n.ifaceName)
if err != nil {
return 0.0, err
}
time.Sleep(waitTime)
n.current, err = getNicStatistic(n.ifaceName)
if err != nil {
return 0.0, err
}
value := (n.current.Fifoout - n.last.Fifoout) + (n.current.Fifoin - n.last.Fifoin)
return float64(value) / float64(linkSpeed), nil
}
func (u *Use) networkStat(ns core.Namespace) (*plugin.MetricType, error) {
ifaceName := ns.Strings()[3]
switch {
case regexp.MustCompile(`^/intel/use/network/.*/utilization$`).MatchString(ns.String()):
netStat := NetStat{ifaceName: ifaceName}
metric, err := netStat.Utilization()
if err != nil {
return nil, err
}
return &plugin.MetricType{
Namespace_: ns,
Data_: metric,
}, nil
case regexp.MustCompile(`^/intel/use/network/.*/saturation$`).MatchString(ns.String()):
netStat := NetStat{ifaceName: ifaceName}
metric, err := netStat.Saturation()
if err != nil {
return nil, err
}
return &plugin.MetricType{
Namespace_: ns,
Data_: metric,
}, nil
}
return nil, errors.Errorf("Unknown error processing %v", ns)
}
func getNicStatistic(iface string) (net.IOCountersStat, error) {
nets, err := net.IOCounters(true)
if err != nil {
return net.IOCountersStat{}, err
}
for _, net := range nets {
if net.Name == iface {
return net, nil
}
}
return net.IOCountersStat{}, errors.New("Can't find interface")
}
func getNetIOCounterMetricTypes() ([]plugin.MetricType, error) {
var mts []plugin.MetricType
//per nic
nets, err := net.IOCounters(true)
if err != nil {
return nil, err
}
for _, net := range nets {
for _, name := range metricLabels {
mts = append(mts, plugin.MetricType{Namespace_: core.NewNamespace("intel", "use", "network", net.Name, name)})
}
}
return mts, nil
}
func getLinkSpeedforIface(iface string) float64 {
path := fmt.Sprintf("%s/%s/speed", sysFsNetPath, iface)
speed, err := readInt(path)
if err != nil {
return 1
}
//Fixed value for 10ms
return float64(speed) * 12.5
}