prometheus/storage/local/persistence_test.go

92 lines
2.0 KiB
Go

package storage_ng
import (
"testing"
clientmodel "github.com/prometheus/client_golang/model"
"github.com/prometheus/prometheus/storage/metric"
"github.com/prometheus/prometheus/utility/test"
)
func newTestPersistence(t *testing.T) (Persistence, test.Closer) {
dir := test.NewTemporaryDirectory("test_persistence", t)
p, err := NewDiskPersistence(dir.Path(), 1024)
if err != nil {
dir.Close()
t.Fatal(err)
}
return p, test.NewCallbackCloser(func() {
p.Close()
dir.Close()
})
}
func buildTestChunks() map[clientmodel.Fingerprint]chunks {
fps := clientmodel.Fingerprints{
clientmodel.Metric{
"label": "value1",
}.Fingerprint(),
clientmodel.Metric{
"label": "value2",
}.Fingerprint(),
clientmodel.Metric{
"label": "value3",
}.Fingerprint(),
}
fpToChunks := map[clientmodel.Fingerprint]chunks{}
for _, fp := range fps {
fpToChunks[fp] = make(chunks, 0, 10)
for i := 0; i < 10; i++ {
fpToChunks[fp] = append(fpToChunks[fp], newDeltaEncodedChunk(d1, d1, true).add(&metric.SamplePair{
Timestamp: clientmodel.Timestamp(i),
Value: clientmodel.SampleValue(fp),
})[0])
}
}
return fpToChunks
}
func chunksEqual(c1, c2 chunk) bool {
values2 := c2.values()
for v1 := range c1.values() {
v2 := <-values2
if !v1.Equal(v2) {
return false
}
}
return true
}
func TestPersistChunk(t *testing.T) {
p, closer := newTestPersistence(t)
defer closer.Close()
fpToChunks := buildTestChunks()
for fp, chunks := range fpToChunks {
for _, c := range chunks {
if err := p.PersistChunk(fp, c); err != nil {
t.Fatal(err)
}
}
}
for fp, expectedChunks := range fpToChunks {
indexes := make([]int, 0, len(expectedChunks))
for i := range expectedChunks {
indexes = append(indexes, i)
}
actualChunks, err := p.LoadChunks(fp, indexes)
if err != nil {
t.Fatal(err)
}
for _, i := range indexes {
if !chunksEqual(expectedChunks[i], actualChunks[i]) {
t.Fatalf("%d. Chunks not equal.", i)
}
}
}
}