func (p *provider) ProvideContainer(spec linux_backend.LinuxContainerSpec) linux_backend.Container {
cgroupReader := &cgroups_manager.LinuxCgroupReader{
Path: p.sysconfig.CgroupNodeFilePath,
}
cgroupsManager := cgroups_manager.New(p.sysconfig.CgroupPath, spec.ID, cgroupReader)
oomWatcher := linux_container.NewOomNotifier(
p.runner, spec.ContainerPath, cgroupsManager,
)
return linux_container.NewLinuxContainer(
spec,
p.portPool,
p.runner,
cgroupsManager,
p.quotaManager,
bandwidth_manager.New(spec.ContainerPath, spec.ID, p.runner),
process_tracker.New(spec.ContainerPath, p.runner),
p.ProvideFilter(spec.ID),
p.ipTablesMgr,
devices.Link{Name: p.sysconfig.NetworkInterfacePrefix + spec.ID + "-0"},
oomWatcher,
p.log.Session("container", lager.Data{"handle": spec.Handle}),
)
}
var _ = Describe("Container cgroups", func() {
var (
cgroupsPath string
cgroupsManager *cgroups_manager.ContainerCgroupsManager
cgroupReader *fake_cgroup_reader.FakeCgroupReader
)
BeforeEach(func() {
cgroupReader = new(fake_cgroup_reader.FakeCgroupReader)
tmpdir, err := ioutil.TempDir(os.TempDir(), "some-cgroups")
Expect(err).ToNot(HaveOccurred())
cgroupsPath = tmpdir
cgroupsManager = cgroups_manager.New(cgroupsPath, "some-container-id", cgroupReader)
})
Describe("setup cgroups", func() {
It("creates a cgroups directory for each subsystem", func() {
err := cgroupsManager.Setup("memory", "cpu")
Expect(err).ToNot(HaveOccurred())
Expect(path.Join(cgroupsPath, "memory", "instance-some-container-id")).To(BeADirectory())
Expect(path.Join(cgroupsPath, "cpu", "instance-some-container-id")).To(BeADirectory())
})
Context("when the subsystems contain cpuset", func() {
It("initializes the cpuset.cpus and cpuset.mems based on the system cgroup", func() {
Expect(os.MkdirAll(path.Join(cgroupsPath, "cpuset"), 0755)).To(Succeed())