forked from kubewharf/katalyst-core
95 lines
2.2 KiB
Go
95 lines
2.2 KiB
Go
//go:build linux
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// +build linux
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/*
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Copyright 2022 The Katalyst 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 external
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import (
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"context"
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"sync"
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"k8s.io/klog/v2"
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"github.com/kubewharf/katalyst-core/pkg/metaserver/agent/pod"
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"github.com/kubewharf/katalyst-core/pkg/metaserver/external/cgroupid"
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"github.com/kubewharf/katalyst-core/pkg/util/external/network"
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"github.com/kubewharf/katalyst-core/pkg/util/external/rdt"
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)
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var (
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initManagerOnce sync.Once
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manager *externalManagerImpl
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)
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type externalManagerImpl struct {
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mutex sync.Mutex
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start bool
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cgroupid.CgroupIDManager
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network.NetworkManager
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rdt.RDTManager
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}
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// InitExternalManager initializes an externalManagerImpl
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func InitExternalManager(podFetcher pod.PodFetcher) ExternalManager {
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initManagerOnce.Do(func() {
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manager = &externalManagerImpl{
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start: false,
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CgroupIDManager: cgroupid.NewCgroupIDManager(podFetcher),
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NetworkManager: network.NewNetworkManager(),
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RDTManager: rdt.NewDefaultManager(),
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}
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})
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return manager
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}
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// Run starts an externalManagerImpl
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func (m *externalManagerImpl) Run(ctx context.Context) {
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m.mutex.Lock()
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if m.start {
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m.mutex.Unlock()
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return
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}
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m.start = true
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go m.CgroupIDManager.Run(ctx)
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m.mutex.Unlock()
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<-ctx.Done()
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}
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// SetNetworkManager replaces defaultNetworkManager with a custom implementation
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func (m *externalManagerImpl) SetNetworkManager(n network.NetworkManager) {
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m.setComponentImplementation(func() {
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m.NetworkManager = n
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})
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}
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func (m *externalManagerImpl) setComponentImplementation(setter func()) {
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m.mutex.Lock()
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defer m.mutex.Unlock()
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if m.start {
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klog.Warningf("external manager has already started, not allowed to set implementations")
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return
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}
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setter()
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}
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