1
0
Fork 0
mirror of https://github.com/moby/moby.git synced 2022-11-09 12:21:53 -05:00
moby--moby/daemon/stats.go
Lei Jitang 96123a1fd5 Add docker stats --no-stream show cpu usage
Signed-off-by: Lei Jitang <leijitang@huawei.com>
2015-05-31 01:25:51 +08:00

42 lines
1.1 KiB
Go

package daemon
import (
"encoding/json"
"github.com/docker/docker/api/types"
"github.com/docker/docker/daemon/execdriver"
"io"
)
func (daemon *Daemon) ContainerStats(name string, stream bool, out io.Writer) error {
updates, err := daemon.SubscribeToContainerStats(name)
if err != nil {
return err
}
var pre_cpu_stats types.CpuStats
for first_v := range updates {
first_update := first_v.(*execdriver.ResourceStats)
first_stats := convertToAPITypes(first_update.Stats)
pre_cpu_stats = first_stats.CpuStats
pre_cpu_stats.SystemUsage = first_update.SystemUsage
break
}
enc := json.NewEncoder(out)
for v := range updates {
update := v.(*execdriver.ResourceStats)
ss := convertToAPITypes(update.Stats)
ss.PreCpuStats = pre_cpu_stats
ss.MemoryStats.Limit = uint64(update.MemoryLimit)
ss.Read = update.Read
ss.CpuStats.SystemUsage = update.SystemUsage
pre_cpu_stats = ss.CpuStats
if err := enc.Encode(ss); err != nil {
// TODO: handle the specific broken pipe
daemon.UnsubscribeToContainerStats(name, updates)
return err
}
if !stream {
break
}
}
return nil
}