// Makes a common cgroup and ensures that it gets destroyed on test exit.
func makeCgroup(t *testing.T) *cgroups.Cgroup {
name := fmt.Sprintf("unittesting-%s", uuid.Variant4().String())
cgroup, err := cgroups.New(name)
TestExpectSuccess(t, err)
AddTestFinalizer(func() {
TestExpectSuccess(t, cgroup.Destroy())
})
return cgroup
}
// NewManager creates a new Manager with the provided options. It will ensure
// the manager is setup and ready to create containers with the provided
// configuration.
func NewManager(opts *Options) (*Manager, error) {
// validate cgroups is properly setup on the host
if err := cgroups.CheckCgroups(); err != nil {
return nil, fmt.Errorf("failed to check cgroups: %v", err)
}
// create the parent cgroup for all child containers to be in
cg, err := cgroups.New(opts.ParentCgroupName)
if err != nil {
return nil, err
}
m := &Manager{
Log: logray.New(),
containers: make(map[string]*Container),
containerDirectory: opts.ContainerDirectory,
volumeDirectory: opts.VolumeDirectory,
cgroup: cg,
requiredNamespaces: opts.RequiredNamespaces,
}
return m, nil
}