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88 lines
2.5 KiB
Go
88 lines
2.5 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 datanode
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import (
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"sync"
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"github.com/milvus-io/milvus/pkg/util/ratelimitutil"
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"github.com/milvus-io/milvus/pkg/util/typeutil"
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)
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// rateCol is global rateCollector in DataNode.
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var (
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rateCol *rateCollector
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initOnce sync.Once
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)
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// rateCollector helps to collect and calculate values (like rate, timeTick and etc...).
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type rateCollector struct {
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*ratelimitutil.RateCollector
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flowGraphTtMu sync.Mutex
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flowGraphTt map[string]Timestamp
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}
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func initGlobalRateCollector() error {
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var err error
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initOnce.Do(func() {
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rateCol, err = newRateCollector()
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})
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return err
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}
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// newRateCollector returns a new rateCollector.
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func newRateCollector() (*rateCollector, error) {
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rc, err := ratelimitutil.NewRateCollector(ratelimitutil.DefaultWindow, ratelimitutil.DefaultGranularity)
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if err != nil {
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return nil, err
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}
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return &rateCollector{
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RateCollector: rc,
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flowGraphTt: make(map[string]Timestamp),
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}, nil
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}
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// updateFlowGraphTt updates rateCollector's flow graph time tick.
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func (r *rateCollector) updateFlowGraphTt(channel string, t Timestamp) {
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r.flowGraphTtMu.Lock()
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defer r.flowGraphTtMu.Unlock()
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r.flowGraphTt[channel] = t
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}
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// removeFlowGraphChannel removes channel from flowGraphTt.
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func (r *rateCollector) removeFlowGraphChannel(channel string) {
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r.flowGraphTtMu.Lock()
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defer r.flowGraphTtMu.Unlock()
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delete(r.flowGraphTt, channel)
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}
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// getMinFlowGraphTt returns the vchannel and minimal time tick of flow graphs.
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func (r *rateCollector) getMinFlowGraphTt() (string, Timestamp) {
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r.flowGraphTtMu.Lock()
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defer r.flowGraphTtMu.Unlock()
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minTt := typeutil.MaxTimestamp
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var channel string
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for c, t := range r.flowGraphTt {
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if minTt > t {
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minTt = t
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channel = c
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}
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}
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return channel, minTt
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}
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