85 lines
2.0 KiB
Go
85 lines
2.0 KiB
Go
// +build linux
|
|
|
|
package cgroups
|
|
|
|
import (
|
|
"github.com/containerd/cgroups"
|
|
eventsapi "github.com/containerd/containerd/api/services/events/v1"
|
|
"github.com/containerd/containerd/events"
|
|
"github.com/containerd/containerd/linux"
|
|
"github.com/containerd/containerd/log"
|
|
"github.com/containerd/containerd/namespaces"
|
|
"github.com/containerd/containerd/plugin"
|
|
"github.com/containerd/containerd/runtime"
|
|
metrics "github.com/docker/go-metrics"
|
|
"golang.org/x/net/context"
|
|
)
|
|
|
|
// Config for the cgroups monitor
|
|
type Config struct {
|
|
NoPrometheus bool `toml:"no_prometheus"`
|
|
}
|
|
|
|
func init() {
|
|
plugin.Register(&plugin.Registration{
|
|
Type: plugin.TaskMonitorPlugin,
|
|
ID: "cgroups",
|
|
Init: New,
|
|
Config: &Config{},
|
|
})
|
|
}
|
|
|
|
// New returns a new cgroups monitor
|
|
func New(ic *plugin.InitContext) (interface{}, error) {
|
|
var ns *metrics.Namespace
|
|
config := ic.Config.(*Config)
|
|
if !config.NoPrometheus {
|
|
ns = metrics.NewNamespace("container", "", nil)
|
|
}
|
|
collector := newCollector(ns)
|
|
oom, err := newOOMCollector(ns)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if ns != nil {
|
|
metrics.Register(ns)
|
|
}
|
|
return &cgroupsMonitor{
|
|
collector: collector,
|
|
oom: oom,
|
|
context: ic.Context,
|
|
publisher: ic.Events,
|
|
}, nil
|
|
}
|
|
|
|
type cgroupsMonitor struct {
|
|
collector *collector
|
|
oom *oomCollector
|
|
context context.Context
|
|
publisher events.Publisher
|
|
}
|
|
|
|
func (m *cgroupsMonitor) Monitor(c runtime.Task) error {
|
|
info := c.Info()
|
|
t := c.(*linux.Task)
|
|
if err := m.collector.Add(info.ID, info.Namespace, t.Cgroup()); err != nil {
|
|
return err
|
|
}
|
|
return m.oom.Add(info.ID, info.Namespace, t.Cgroup(), m.trigger)
|
|
}
|
|
|
|
func (m *cgroupsMonitor) Stop(c runtime.Task) error {
|
|
info := c.Info()
|
|
m.collector.Remove(info.ID, info.Namespace)
|
|
return nil
|
|
}
|
|
|
|
func (m *cgroupsMonitor) trigger(id, namespace string, cg cgroups.Cgroup) {
|
|
ctx := namespaces.WithNamespace(m.context, namespace)
|
|
if err := m.publisher.Publish(ctx, runtime.TaskOOMEventTopic, &eventsapi.TaskOOM{
|
|
ContainerID: id,
|
|
}); err != nil {
|
|
log.G(m.context).WithError(err).Error("post OOM event")
|
|
}
|
|
}
|