forked from rancher/agent
/
stats_unix.go
78 lines (73 loc) · 2.38 KB
/
stats_unix.go
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//+build !windows
package stats
import (
"encoding/json"
"github.com/vishvananda/netlink"
"github.com/vishvananda/netns"
)
func convertDockerStats(stats DockerStats, pid int) containerStats {
containerStats := containerStats{}
containerStats.Timestamp = stats.Read
containerStats.CPU.Usage.Total = uint64(stats.CPUStats.CPUUsage.TotalUsage)
containerStats.CPU.Usage.PerCPU = []uint64{}
for _, value := range stats.CPUStats.CPUUsage.PercpuUsage {
containerStats.CPU.Usage.PerCPU = append(containerStats.CPU.Usage.PerCPU, uint64(value))
}
containerStats.CPU.Usage.System = uint64(stats.CPUStats.CPUUsage.UsageInKernelmode)
containerStats.CPU.Usage.User = uint64(stats.CPUStats.CPUUsage.UsageInKernelmode)
containerStats.Memory.Usage = uint64(stats.MemoryStats.Usage)
containerStats.Network.Interfaces = []InterfaceStats{}
for name, netStats := range getLinkStats(pid) {
data := InterfaceStats{}
data.Name = name
data.RxBytes = uint64(netStats.RxBytes)
data.RxDropped = uint64(netStats.RxDropped)
data.RxErrors = uint64(netStats.RxErrors)
data.RxPackets = uint64(netStats.RxPackets)
data.TxBytes = uint64(netStats.TxBytes)
data.TxDropped = uint64(netStats.TxDropped)
data.TxPackets = uint64(netStats.TxPackets)
data.TxErrors = uint64(netStats.TxErrors)
containerStats.Network.Interfaces = append(containerStats.Network.Interfaces, data)
}
containerStats.DiskIo.IoServiceBytes = []PerDiskStats{}
for _, diskStats := range stats.BlkioStats.IoServiceBytesRecursive {
data := PerDiskStats{}
data.Stats = map[string]uint64{}
data.Stats[diskStats.Op] = uint64(diskStats.Value)
containerStats.DiskIo.IoServiceBytes = append(containerStats.DiskIo.IoServiceBytes, data)
}
return containerStats
}
func FromString(rawstring string) (DockerStats, error) {
obj := DockerStats{}
err := json.Unmarshal([]byte(rawstring), &obj)
if err != nil {
return obj, err
}
return obj, nil
}
func getLinkStats(pid int) map[string]*netlink.LinkStatistics {
ret := map[string]*netlink.LinkStatistics{}
nsHandler, err := netns.GetFromPid(pid)
if err != nil {
return nil
}
defer nsHandler.Close()
handler, err := netlink.NewHandleAt(nsHandler)
if err != nil {
return nil
}
defer handler.Delete()
links, err := handler.LinkList()
if err != nil {
return nil
}
for _, link := range links {
attr := link.Attrs()
if attr.Name != "lo" {
ret[attr.Name] = attr.Statistics
}
}
return ret
}