mirror of
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80 lines
2.3 KiB
Go
80 lines
2.3 KiB
Go
//go:build linux
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// +build linux
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// Copyright 2021 Google Inc. All Rights Reserved.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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// Manager of resctrl for containers.
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package resctrl
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import (
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"errors"
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"time"
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"k8s.io/klog/v2"
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"github.com/google/cadvisor/container/raw"
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"github.com/google/cadvisor/stats"
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)
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type Manager interface {
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Destroy()
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GetCollector(containerName string, getContainerPids func() ([]string, error), numberOfNUMANodes int) (stats.Collector, error)
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}
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type manager struct {
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stats.NoopDestroy
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interval time.Duration
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vendorID string
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inHostNamespace bool
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}
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func (m *manager) GetCollector(containerName string, getContainerPids func() ([]string, error), numberOfNUMANodes int) (stats.Collector, error) {
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collector := newCollector(containerName, getContainerPids, m.interval, numberOfNUMANodes, m.vendorID, m.inHostNamespace)
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err := collector.setup()
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if err != nil {
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return &stats.NoopCollector{}, err
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}
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return collector, nil
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}
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func NewManager(interval time.Duration, setup func() error, vendorID string, inHostNamespace bool) (Manager, error) {
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err := setup()
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if err != nil {
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return &NoopManager{}, err
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}
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if !isResctrlInitialized {
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return &NoopManager{}, errors.New("the resctrl isn't initialized")
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}
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if !(enabledCMT || enabledMBM) {
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return &NoopManager{}, errors.New("there are no monitoring features available")
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}
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if !*raw.DockerOnly {
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klog.Warning("--docker_only should be set when collecting Resctrl metrics! See the runtime docs.")
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}
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return &manager{interval: interval, vendorID: vendorID, inHostNamespace: inHostNamespace}, nil
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}
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type NoopManager struct {
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stats.NoopDestroy
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}
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func (np *NoopManager) GetCollector(_ string, _ func() ([]string, error), _ int) (stats.Collector, error) {
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return &stats.NoopCollector{}, nil
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}
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