seaweedfs/weed/storage/needle_map_metric_test.go

package storage

import (
	"testing"
	"io/ioutil"
	"math/rand"
	"github.com/chrislusf/seaweedfs/weed/glog"
)

func TestFastLoadingNeedleMapMetrics(t *testing.T) {

	idxFile, _ := ioutil.TempFile("", "tmp.idx")
	nm := NewBtreeNeedleMap(idxFile)

	for i := 0; i < 10000; i++ {
		nm.Put(uint64(i+1), uint32(0), uint32(1))
		if rand.Float32() < 0.2 {
			nm.Delete(uint64(rand.Int63n(int64(i))+1), uint32(0))
		}
	}

	mm, _ := newNeedleMapMetricFromIndexFile(idxFile)

	glog.V(0).Infof("FileCount expected %d actual %d", nm.FileCount(), mm.FileCount())
	glog.V(0).Infof("DeletedSize expected %d actual %d", nm.DeletedSize(), mm.DeletedSize())
	glog.V(0).Infof("ContentSize expected %d actual %d", nm.ContentSize(), mm.ContentSize())
	glog.V(0).Infof("DeletedCount expected %d actual %d", nm.DeletedCount(), mm.DeletedCount())
	glog.V(0).Infof("MaxFileKey expected %d actual %d", nm.MaxFileKey(), mm.MaxFileKey())
}