prometheus/tsdb/agent/series_test.go

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// Copyright 2022 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package agent
import (
"fmt"
"math"
"sync"
"testing"
"time"
"github.com/stretchr/testify/require"
"github.com/prometheus/prometheus/model/labels"
"github.com/prometheus/prometheus/tsdb/chunks"
)
func TestNoDeadlock(t *testing.T) {
const numWorkers = 1000
var (
wg sync.WaitGroup
started = make(chan struct{})
stripeSeries = newStripeSeries(3)
)
wg.Add(numWorkers)
for i := 0; i < numWorkers; i++ {
go func() {
defer wg.Done()
<-started
_ = stripeSeries.GC(math.MaxInt64)
}()
}
wg.Add(numWorkers)
for i := 0; i < numWorkers; i++ {
go func(i int) {
defer wg.Done()
<-started
series := &memSeries{
ref: chunks.HeadSeriesRef(i),
lset: labels.FromMap(map[string]string{
"id": fmt.Sprintf("%d", i),
}),
}
stripeSeries.Set(series.lset.Hash(), series)
}(i)
}
finished := make(chan struct{})
go func() {
wg.Wait()
close(finished)
}()
close(started)
select {
case <-finished:
return
case <-time.After(15 * time.Second):
require.FailNow(t, "deadlock detected")
}
}