56054e3e31
This is possible thanks to the new libcontainer interface that allows the use of absolute paths.
86 lines
2.8 KiB
Go
86 lines
2.8 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/google/cadvisor/info"
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)
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// Get stats of the specified container
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func GetStats(config *libcontainer.Config, 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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libcontainerStats, err := libcontainer.GetStats(config, state)
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if err != nil {
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return nil, err
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}
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return toContainerStats(libcontainerStats), 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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// 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.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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