8f2bc39f72
Previously, callers of `Exists()` would not know why the cGroup was or was not existing. In one call-site in particular, the `kubelet` would entirely fail to start if the cGroup validation did not succeed. In these cases we MUST explain what went wrong and pass that information clearly to the caller. Previously, some but not all of the reasons for invalidation were logged at a low log-level instead. This led to poor UX. The original method was retained on the interface so as to make this diff small. Signed-off-by: Steve Kuznetsov <skuznets@redhat.com>
105 lines
2.4 KiB
Go
105 lines
2.4 KiB
Go
//go:build !linux
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// +build !linux
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/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package cm
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import "errors"
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type unsupportedCgroupManager struct{}
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var errNotSupported = errors.New("Cgroup Manager is not supported in this build")
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// Make sure that unsupportedCgroupManager implements the CgroupManager interface
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var _ CgroupManager = &unsupportedCgroupManager{}
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type CgroupSubsystems struct {
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Mounts []interface{}
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MountPoints map[string]string
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}
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func NewCgroupManager(_ interface{}) CgroupManager {
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return &unsupportedCgroupManager{}
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}
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func (m *unsupportedCgroupManager) Name(_ CgroupName) string {
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return ""
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}
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func (m *unsupportedCgroupManager) Validate(_ CgroupName) error {
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return errNotSupported
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}
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func (m *unsupportedCgroupManager) Exists(_ CgroupName) bool {
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return false
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}
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func (m *unsupportedCgroupManager) Destroy(_ *CgroupConfig) error {
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return nil
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}
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func (m *unsupportedCgroupManager) Update(_ *CgroupConfig) error {
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return nil
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}
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func (m *unsupportedCgroupManager) Create(_ *CgroupConfig) error {
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return errNotSupported
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}
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func (m *unsupportedCgroupManager) MemoryUsage(_ CgroupName) (int64, error) {
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return -1, errNotSupported
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}
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func (m *unsupportedCgroupManager) Pids(_ CgroupName) []int {
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return nil
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}
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func (m *unsupportedCgroupManager) CgroupName(name string) CgroupName {
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return CgroupName([]string{})
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}
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func (m *unsupportedCgroupManager) ReduceCPULimits(cgroupName CgroupName) error {
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return nil
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}
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var RootCgroupName = CgroupName([]string{})
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func NewCgroupName(base CgroupName, components ...string) CgroupName {
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return append(append([]string{}, base...), components...)
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}
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func (cgroupName CgroupName) ToSystemd() string {
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return ""
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}
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func ParseSystemdToCgroupName(name string) CgroupName {
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return nil
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}
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func (cgroupName CgroupName) ToCgroupfs() string {
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return ""
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}
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func ParseCgroupfsToCgroupName(name string) CgroupName {
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return nil
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}
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func IsSystemdStyleName(name string) bool {
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return false
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}
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