forked from google/cadvisor
/
factory.go
99 lines (79 loc) · 2.71 KB
/
factory.go
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// Copyright 2016 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package rkt
import (
"fmt"
"github.com/google/cadvisor/container"
"github.com/google/cadvisor/container/libcontainer"
"github.com/google/cadvisor/fs"
info "github.com/google/cadvisor/info/v1"
"github.com/google/cadvisor/manager/watcher"
"github.com/golang/glog"
)
const RktNamespace = "rkt"
type rktFactory struct {
machineInfoFactory info.MachineInfoFactory
cgroupSubsystems *libcontainer.CgroupSubsystems
fsInfo fs.FsInfo
ignoreMetrics container.MetricSet
rktPath string
}
func (self *rktFactory) String() string {
return "rkt"
}
func (self *rktFactory) NewContainerHandler(name string, inHostNamespace bool) (container.ContainerHandler, error) {
client, err := Client()
if err != nil {
return nil, err
}
rootFs := "/"
if !inHostNamespace {
rootFs = "/rootfs"
}
return newRktContainerHandler(name, client, self.rktPath, self.cgroupSubsystems, self.machineInfoFactory, self.fsInfo, rootFs, self.ignoreMetrics)
}
func (self *rktFactory) CanHandleAndAccept(name string) (bool, bool, error) {
accept, err := verifyPod(name)
return accept, accept, err
}
func (self *rktFactory) DebugInfo() map[string][]string {
return map[string][]string{}
}
func Register(machineInfoFactory info.MachineInfoFactory, fsInfo fs.FsInfo, ignoreMetrics container.MetricSet) error {
_, err := Client()
if err != nil {
return fmt.Errorf("unable to communicate with Rkt api service: %v", err)
}
rktPath, err := RktPath()
if err != nil {
return fmt.Errorf("unable to get the RktPath variable %v", err)
}
cgroupSubsystems, err := libcontainer.GetCgroupSubsystems()
if err != nil {
return fmt.Errorf("failed to get cgroup subsystems: %v", err)
}
if len(cgroupSubsystems.Mounts) == 0 {
return fmt.Errorf("failed to find supported cgroup mounts for the raw factory")
}
glog.Infof("Registering Rkt factory")
factory := &rktFactory{
machineInfoFactory: machineInfoFactory,
fsInfo: fsInfo,
cgroupSubsystems: &cgroupSubsystems,
ignoreMetrics: ignoreMetrics,
rktPath: rktPath,
}
container.RegisterContainerHandlerFactory(factory, []watcher.ContainerWatchSource{watcher.Rkt})
return nil
}