mirror of
https://github.com/prometheus/prometheus.git
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147 lines
3.3 KiB
Go
147 lines
3.3 KiB
Go
// Copyright 2017 The Prometheus 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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//
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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 tsdb
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import (
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"io/ioutil"
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"math/rand"
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"os"
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"sync"
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"testing"
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"time"
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"github.com/prometheus/tsdb/testutil"
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)
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func TestWriteAndReadbackTombStones(t *testing.T) {
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tmpdir, _ := ioutil.TempDir("", "test")
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defer os.RemoveAll(tmpdir)
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ref := uint64(0)
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stones := NewMemTombstones()
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// Generate the tombstones.
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for i := 0; i < 100; i++ {
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ref += uint64(rand.Int31n(10)) + 1
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numRanges := rand.Intn(5) + 1
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dranges := make(Intervals, 0, numRanges)
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mint := rand.Int63n(time.Now().UnixNano())
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for j := 0; j < numRanges; j++ {
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dranges = dranges.add(Interval{mint, mint + rand.Int63n(1000)})
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mint += rand.Int63n(1000) + 1
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}
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stones.addInterval(ref, dranges...)
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}
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testutil.Ok(t, writeTombstoneFile(tmpdir, stones))
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restr, err := readTombstones(tmpdir)
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testutil.Ok(t, err)
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// Compare the two readers.
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testutil.Equals(t, stones, restr)
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}
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func TestAddingNewIntervals(t *testing.T) {
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cases := []struct {
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exist Intervals
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new Interval
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exp Intervals
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}{
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{
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new: Interval{1, 2},
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exp: Intervals{{1, 2}},
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},
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{
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exist: Intervals{{1, 2}},
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new: Interval{1, 2},
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exp: Intervals{{1, 2}},
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},
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{
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exist: Intervals{{1, 4}, {6, 6}},
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new: Interval{5, 6},
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exp: Intervals{{1, 6}},
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},
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{
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exist: Intervals{{1, 10}, {12, 20}, {25, 30}},
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new: Interval{21, 23},
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exp: Intervals{{1, 10}, {12, 23}, {25, 30}},
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},
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{
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exist: Intervals{{1, 2}, {3, 5}, {7, 7}},
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new: Interval{6, 7},
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exp: Intervals{{1, 2}, {3, 7}},
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},
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{
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exist: Intervals{{1, 10}, {12, 20}, {25, 30}},
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new: Interval{21, 25},
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exp: Intervals{{1, 10}, {12, 30}},
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},
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{
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exist: Intervals{{1, 10}, {12, 20}, {25, 30}},
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new: Interval{18, 23},
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exp: Intervals{{1, 10}, {12, 23}, {25, 30}},
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},
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{
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exist: Intervals{{1, 10}, {12, 20}, {25, 30}},
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new: Interval{9, 23},
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exp: Intervals{{1, 23}, {25, 30}},
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},
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{
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exist: Intervals{{1, 10}, {12, 20}, {25, 30}},
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new: Interval{9, 230},
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exp: Intervals{{1, 230}},
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},
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{
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exist: Intervals{{5, 10}, {12, 20}, {25, 30}},
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new: Interval{1, 4},
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exp: Intervals{{1, 10}, {12, 20}, {25, 30}},
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},
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{
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exist: Intervals{{5, 10}, {12, 20}, {25, 30}},
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new: Interval{11, 14},
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exp: Intervals{{5, 20}, {25, 30}},
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},
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}
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for _, c := range cases {
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testutil.Equals(t, c.exp, c.exist.add(c.new))
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}
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return
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}
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// TestMemTombstonesConcurrency to make sure they are safe to access from different goroutines.
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func TestMemTombstonesConcurrency(t *testing.T) {
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tomb := NewMemTombstones()
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totalRuns := 100
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var wg sync.WaitGroup
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wg.Add(2)
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go func() {
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for x := 0; x < totalRuns; x++ {
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tomb.addInterval(uint64(x), Interval{int64(x), int64(x)})
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}
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wg.Done()
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}()
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go func() {
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for x := 0; x < totalRuns; x++ {
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tomb.Get(uint64(x))
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}
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wg.Done()
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}()
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wg.Wait()
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}
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