func (self *rawContainerHandler) getFsStats(stats *info.ContainerStats) error {
// Get Filesystem information only for the root cgroup.
if self.name == "/" {
filesystems, err := self.fsInfo.GetGlobalFsInfo()
if err != nil {
return err
}
for _, fs := range filesystems {
stats.Filesystem = append(stats.Filesystem,
info.FsStats{
Device: fs.Device,
Limit: fs.Capacity,
Usage: fs.Capacity - fs.Free,
ReadsCompleted: fs.DiskStats.ReadsCompleted,
ReadsMerged: fs.DiskStats.ReadsMerged,
SectorsRead: fs.DiskStats.SectorsRead,
ReadTime: fs.DiskStats.ReadTime,
WritesCompleted: fs.DiskStats.WritesCompleted,
WritesMerged: fs.DiskStats.WritesMerged,
SectorsWritten: fs.DiskStats.SectorsWritten,
WriteTime: fs.DiskStats.WriteTime,
IoInProgress: fs.DiskStats.IoInProgress,
IoTime: fs.DiskStats.IoTime,
WeightedIoTime: fs.DiskStats.WeightedIoTime,
})
}
} else if len(self.externalMounts) > 0 {
var mountSet map[string]struct{}
mountSet = make(map[string]struct{})
for _, mount := range self.externalMounts {
mountSet[mount.HostDir] = struct{}{}
}
filesystems, err := self.fsInfo.GetFsInfoForPath(mountSet)
if err != nil {
return err
}
for _, fs := range filesystems {
stats.Filesystem = append(stats.Filesystem,
info.FsStats{
Device: fs.Device,
Limit: fs.Capacity,
Usage: fs.Capacity - fs.Free,
ReadsCompleted: fs.DiskStats.ReadsCompleted,
ReadsMerged: fs.DiskStats.ReadsMerged,
SectorsRead: fs.DiskStats.SectorsRead,
ReadTime: fs.DiskStats.ReadTime,
WritesCompleted: fs.DiskStats.WritesCompleted,
WritesMerged: fs.DiskStats.WritesMerged,
SectorsWritten: fs.DiskStats.SectorsWritten,
WriteTime: fs.DiskStats.WriteTime,
IoInProgress: fs.DiskStats.IoInProgress,
IoTime: fs.DiskStats.IoTime,
WeightedIoTime: fs.DiskStats.WeightedIoTime,
})
}
}
return nil
}
func buildTrace(cpu, mem []uint64, duration time.Duration) []*info.ContainerStats {
if len(cpu) != len(mem) {
panic("len(cpu) != len(mem)")
}
ret := make([]*info.ContainerStats, len(cpu))
currentTime := time.Now()
var cpuTotalUsage uint64 = 0
for i, cpuUsage := range cpu {
cpuTotalUsage += cpuUsage
stats := new(info.ContainerStats)
stats.Timestamp = currentTime
currentTime = currentTime.Add(duration)
stats.Cpu.Usage.Total = cpuTotalUsage
stats.Cpu.Usage.User = stats.Cpu.Usage.Total
stats.Cpu.Usage.System = 0
stats.Cpu.Usage.PerCpu = []uint64{cpuTotalUsage}
stats.Memory.Usage = mem[i]
stats.Network.RxBytes = uint64(rand.Intn(10000))
stats.Network.RxErrors = uint64(rand.Intn(1000))
stats.Network.TxBytes = uint64(rand.Intn(100000))
stats.Network.TxErrors = uint64(rand.Intn(1000))
stats.Filesystem = make([]info.FsStats, 1)
stats.Filesystem[0].Device = "/dev/sda1"
stats.Filesystem[0].Limit = 1024000000
stats.Filesystem[0].Usage = 1024000
ret[i] = stats
}
return ret
}
func (self *dockerContainerHandler) getFsStats(stats *info.ContainerStats) error {
// No support for non-aufs storage drivers.
if !self.usesAufsDriver {
return nil
}
// As of now we assume that all the storage dirs are on the same device.
// The first storage dir will be that of the image layers.
deviceInfo, err := self.fsInfo.GetDirFsDevice(self.storageDirs[0])
if err != nil {
return err
}
mi, err := self.machineInfoFactory.GetMachineInfo()
if err != nil {
return err
}
var limit uint64 = 0
// Docker does not impose any filesystem limits for containers. So use capacity as limit.
for _, fs := range mi.Filesystems {
if fs.Device == deviceInfo.Device {
limit = fs.Capacity
break
}
}
fsStat := info.FsStats{Device: deviceInfo.Device, Limit: limit}
var usage uint64 = 0
for _, dir := range self.storageDirs {
// TODO(Vishh): Add support for external mounts.
dirUsage, err := self.fsInfo.GetDirUsage(dir)
if err != nil {
return err
}
usage += dirUsage
}
fsStat.Usage = usage
stats.Filesystem = append(stats.Filesystem, fsStat)
return nil
}