139 lines
4.1 KiB
Go
139 lines
4.1 KiB
Go
// Copyright 2014 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package libcontainer
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import (
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"time"
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"github.com/docker/libcontainer"
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"github.com/docker/libcontainer/cgroups"
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cgroupfs "github.com/docker/libcontainer/cgroups/fs"
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"github.com/docker/libcontainer/network"
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"github.com/google/cadvisor/info"
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)
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// Get stats of the specified container
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func GetStats(cgroup *cgroups.Cgroup, state *libcontainer.State) (*info.ContainerStats, error) {
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// TODO(vmarmol): Use libcontainer's Stats() in the new API when that is ready.
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stats := &libcontainer.ContainerStats{}
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var err error
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stats.CgroupStats, err = cgroupfs.GetStats(cgroup)
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if err != nil {
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return &info.ContainerStats{}, err
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}
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stats.NetworkStats, err = network.GetStats(&state.NetworkState)
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return toContainerStats(stats), nil
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}
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func GetStatsCgroupOnly(cgroup *cgroups.Cgroup) (*info.ContainerStats, error) {
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s, err := cgroupfs.GetStats(cgroup)
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if err != nil {
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return nil, err
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}
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return toContainerStats(&libcontainer.ContainerStats{CgroupStats: s}), nil
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}
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func DiskStatsCopy(blkio_stats []cgroups.BlkioStatEntry) (stat []info.PerDiskStats) {
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if len(blkio_stats) == 0 {
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return
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}
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type DiskKey struct {
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Major uint64
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Minor uint64
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}
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disk_stat := make(map[DiskKey]*info.PerDiskStats)
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for i := range blkio_stats {
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major := blkio_stats[i].Major
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minor := blkio_stats[i].Minor
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disk_key := DiskKey{
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Major: major,
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Minor: minor,
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}
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diskp, ok := disk_stat[disk_key]
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if !ok {
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disk := info.PerDiskStats{
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Major: major,
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Minor: minor,
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}
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disk.Stats = make(map[string]uint64)
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diskp = &disk
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disk_stat[disk_key] = diskp
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}
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op := blkio_stats[i].Op
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if op == "" {
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op = "Count"
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}
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diskp.Stats[op] = blkio_stats[i].Value
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}
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i := 0
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stat = make([]info.PerDiskStats, len(disk_stat))
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for _, disk := range disk_stat {
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stat[i] = *disk
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i++
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}
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return
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}
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// Convert libcontainer stats to info.ContainerStats.
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func toContainerStats(libcontainerStats *libcontainer.ContainerStats) *info.ContainerStats {
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s := libcontainerStats.CgroupStats
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ret := new(info.ContainerStats)
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ret.Timestamp = time.Now()
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if s != nil {
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ret.Cpu = new(info.CpuStats)
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ret.Cpu.Usage.User = s.CpuStats.CpuUsage.UsageInUsermode
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ret.Cpu.Usage.System = s.CpuStats.CpuUsage.UsageInKernelmode
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n := len(s.CpuStats.CpuUsage.PercpuUsage)
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ret.Cpu.Usage.PerCpu = make([]uint64, n)
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ret.Cpu.Usage.Total = 0
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for i := 0; i < n; i++ {
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ret.Cpu.Usage.PerCpu[i] = s.CpuStats.CpuUsage.PercpuUsage[i]
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ret.Cpu.Usage.Total += s.CpuStats.CpuUsage.PercpuUsage[i]
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}
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ret.DiskIo.IoServiceBytes = DiskStatsCopy(s.BlkioStats.IoServiceBytesRecursive)
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ret.DiskIo.IoServiced = DiskStatsCopy(s.BlkioStats.IoServicedRecursive)
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ret.DiskIo.IoQueued = DiskStatsCopy(s.BlkioStats.IoQueuedRecursive)
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ret.DiskIo.Sectors = DiskStatsCopy(s.BlkioStats.SectorsRecursive)
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ret.Memory = new(info.MemoryStats)
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ret.Memory.Usage = s.MemoryStats.Usage
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if v, ok := s.MemoryStats.Stats["pgfault"]; ok {
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ret.Memory.ContainerData.Pgfault = v
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ret.Memory.HierarchicalData.Pgfault = v
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}
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if v, ok := s.MemoryStats.Stats["pgmajfault"]; ok {
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ret.Memory.ContainerData.Pgmajfault = v
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ret.Memory.HierarchicalData.Pgmajfault = v
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}
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if v, ok := s.MemoryStats.Stats["total_inactive_anon"]; ok {
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ret.Memory.WorkingSet = ret.Memory.Usage - v
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if v, ok := s.MemoryStats.Stats["total_active_file"]; ok {
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ret.Memory.WorkingSet -= v
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}
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}
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}
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// TODO(vishh): Perform a deep copy or alias libcontainer network stats.
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if libcontainerStats.NetworkStats != nil {
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ret.Network = (*info.NetworkStats)(libcontainerStats.NetworkStats)
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}
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return ret
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}
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