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c171280f63
issue: #44123 - support replicate message in wal of milvus. - support CDC-replicate recovery from wal. - fix some CDC replicator bugs Signed-off-by: chyezh <chyezh@outlook.com>
88 lines
2.3 KiB
Go
88 lines
2.3 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 controllerimpl
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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/cdc/resource"
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"github.com/milvus-io/milvus/pkg/v2/log"
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)
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const checkInterval = 10 * time.Second
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type controller struct {
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ctx context.Context
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wg sync.WaitGroup
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stopOnce sync.Once
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stopChan chan struct{}
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}
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func NewController() *controller {
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return &controller{
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ctx: context.Background(),
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stopChan: make(chan struct{}),
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}
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}
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func (c *controller) Start() {
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log.Ctx(c.ctx).Info("CDC controller started")
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c.wg.Add(1)
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go func() {
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defer c.wg.Done()
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timer := time.NewTicker(checkInterval)
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defer timer.Stop()
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for {
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select {
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case <-c.stopChan:
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return
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case <-timer.C:
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c.run()
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}
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}
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}()
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}
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func (c *controller) Stop() {
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c.stopOnce.Do(func() {
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log.Ctx(c.ctx).Info("CDC controller stopping...")
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close(c.stopChan)
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c.wg.Wait()
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resource.Resource().ReplicateManagerClient().Close()
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log.Ctx(c.ctx).Info("CDC controller stopped")
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})
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}
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func (c *controller) run() {
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targetReplicatePChannels, err := resource.Resource().ReplicationCatalog().ListReplicatePChannels(c.ctx)
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if err != nil {
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log.Ctx(c.ctx).Error("failed to get replicate pchannels", zap.Error(err))
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return
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}
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// create replicators for all replicate pchannels
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for _, replicatePChannel := range targetReplicatePChannels {
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resource.Resource().ReplicateManagerClient().CreateReplicator(replicatePChannel)
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}
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// remove out of target replicators
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resource.Resource().ReplicateManagerClient().RemoveOutOfTargetReplicators(targetReplicatePChannels)
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}
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