mirror of https://github.com/milvus-io/milvus.git
127 lines
3.8 KiB
Go
127 lines
3.8 KiB
Go
// Licensed to the LF AI & Data foundation under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. 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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package observers
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import (
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"context"
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"sync"
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"time"
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"go.uber.org/zap"
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"github.com/milvus-io/milvus/internal/querycoordv2/meta"
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"github.com/milvus-io/milvus/internal/querycoordv2/params"
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"github.com/milvus-io/milvus/pkg/log"
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"github.com/milvus-io/milvus/pkg/util/syncutil"
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)
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// ResourceObserver is used to observe resource group status.
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// Recover resource group into expected configuration.
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type ResourceObserver struct {
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cancel context.CancelFunc
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wg sync.WaitGroup
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meta *meta.Meta
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startOnce sync.Once
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stopOnce sync.Once
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}
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func NewResourceObserver(meta *meta.Meta) *ResourceObserver {
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return &ResourceObserver{
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meta: meta,
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}
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}
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func (ob *ResourceObserver) Start() {
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ob.startOnce.Do(func() {
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ctx, cancel := context.WithCancel(context.Background())
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ob.cancel = cancel
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ob.wg.Add(1)
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go ob.schedule(ctx)
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})
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}
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func (ob *ResourceObserver) Stop() {
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ob.stopOnce.Do(func() {
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if ob.cancel != nil {
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ob.cancel()
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}
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ob.wg.Wait()
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})
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}
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func (ob *ResourceObserver) schedule(ctx context.Context) {
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defer ob.wg.Done()
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log.Info("Start check resource group loop")
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listener := ob.meta.ResourceManager.ListenResourceGroupChanged(ctx)
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for {
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ob.waitRGChangedOrTimeout(ctx, listener)
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// stop if the context is canceled.
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if ctx.Err() != nil {
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log.Info("Close resource group observer")
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return
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}
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// do check once.
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ob.checkAndRecoverResourceGroup(ctx)
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}
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}
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func (ob *ResourceObserver) waitRGChangedOrTimeout(ctx context.Context, listener *syncutil.VersionedListener) {
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ctxWithTimeout, cancel := context.WithTimeout(ctx, params.Params.QueryCoordCfg.CheckResourceGroupInterval.GetAsDuration(time.Second))
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defer cancel()
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listener.Wait(ctxWithTimeout)
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}
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func (ob *ResourceObserver) checkAndRecoverResourceGroup(ctx context.Context) {
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manager := ob.meta.ResourceManager
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rgNames := manager.ListResourceGroups(ctx)
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enableRGAutoRecover := params.Params.QueryCoordCfg.EnableRGAutoRecover.GetAsBool()
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log := log.Ctx(ctx)
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log.Debug("start to check resource group", zap.Bool("enableRGAutoRecover", enableRGAutoRecover), zap.Int("resourceGroupNum", len(rgNames)))
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// Check if there is any incoming node.
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if manager.CheckIncomingNodeNum(ctx) > 0 {
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log.Info("new incoming node is ready to be assigned...", zap.Int("incomingNodeNum", manager.CheckIncomingNodeNum(ctx)))
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manager.AssignPendingIncomingNode(ctx)
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}
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log.Debug("recover resource groups...")
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// Recover all resource group into expected configuration.
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for _, rgName := range rgNames {
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if err := manager.MeetRequirement(ctx, rgName); err != nil {
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log.Info("found resource group need to be recovered",
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zap.String("rgName", rgName),
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zap.String("reason", err.Error()),
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)
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if enableRGAutoRecover {
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err := manager.AutoRecoverResourceGroup(ctx, rgName)
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if err != nil {
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log.Warn("failed to recover resource group",
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zap.String("rgName", rgName),
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zap.Error(err),
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)
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}
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}
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}
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}
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log.Debug("check resource group done", zap.Bool("enableRGAutoRecover", enableRGAutoRecover), zap.Int("resourceGroupNum", len(rgNames)))
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}
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