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package storage
import (
"math/rand"
"os"
"runtime"
"testing"
"github.com/chrislusf/weed-fs/go/glog"
)
var testIndexFilename string = "../../test/sample.idx"
func TestCdbMap0Convert(t *testing.T) {
indexFile, err := os.Open(testIndexFilename)
if err != nil {
t.Fatalf("cannot open %s: %s", testIndexFilename, err)
}
defer indexFile.Close()
cdbFn := testIndexFilename + ".cdb"
t.Logf("converting %s to %s", cdbFn, cdbFn)
if err = ConvertIndexToCdb(cdbFn, indexFile); err != nil {
t.Fatalf("error while converting: %s", err)
}
}
func TestCdbMap1Mem(t *testing.T) {
var nm NeedleMapper
i := 0
visit := func(nv NeedleValue) error {
i++
return nil
}
a := getMemStats()
t.Logf("opening %s.cdb", testIndexFilename)
nm, err := OpenCdbMap(testIndexFilename + ".cdb")
if err != nil {
t.Fatalf("error opening cdb: %s", err)
}
b := getMemStats()
glog.V(0).Infof("opening cdb consumed %d bytes", b-a)
defer nm.Close()
a = getMemStats()
if err = nm.Visit(visit); err != nil {
t.Fatalf("error visiting %s: %s", nm, err)
}
b = getMemStats()
glog.V(0).Infof("visit cdb %d consumed %d bytes", i, b-a)
nm.Close()
indexFile, err := os.Open(testIndexFilename)
if err != nil {
t.Fatalf("error opening idx: %s", err)
}
a = getMemStats()
nm, err = LoadNeedleMap(indexFile)
if err != nil {
t.Fatalf("error loading idx: %s", err)
}
defer nm.Close()
b = getMemStats()
glog.V(0).Infof("opening idx consumed %d bytes", b-a)
i = 0
a = getMemStats()
if err = nm.Visit(visit); err != nil {
t.Fatalf("error visiting %s: %s", nm, err)
}
b = getMemStats()
glog.V(0).Infof("visit idx %d consumed %d bytes", i, b-a)
}
func BenchmarkCdbMap9List(t *testing.B) {
t.StopTimer()
indexFile, err := os.Open(testIndexFilename)
if err != nil {
t.Fatalf("cannot open %s: %s", testIndexFilename, err)
}
defer indexFile.Close()
a := getMemStats()
t.Logf("opening %s", indexFile)
idx, err := LoadNeedleMap(indexFile)
if err != nil {
t.Fatalf("cannot load %s: %s", indexFile.Name(), err)
}
defer idx.Close()
b := getMemStats()
glog.V(0).Infof("LoadNeedleMap consumed %d bytes", b-a)
cdbFn := testIndexFilename + ".cdb"
a = getMemStats()
t.Logf("opening %s", cdbFn)
m, err := OpenCdbMap(cdbFn)
if err != nil {
t.Fatalf("error opening %s: %s", cdbFn, err)
}
defer m.Close()
b = getMemStats()
glog.V(0).Infof("OpenCdbMap consumed %d bytes", b-a)
i := 0
glog.V(0).Infoln("checking whether the cdb contains every key")
t.StartTimer()
err = idx.Visit(func(nv NeedleValue) error {
if i > t.N || rand.Intn(10) < 9 {
return nil
}
i++
if i%1000 == 0 {
glog.V(0).Infof("%d. %s", i, nv)
}
if nv2, ok := m.Get(uint64(nv.Key)); !ok || nv2 == nil {
t.Errorf("%d in index, not in cdb", nv.Key)
} else if nv2.Key != nv.Key {
t.Errorf("requested key %d from cdb, got %d", nv.Key, nv2.Key)
} else if nv2.Offset != nv.Offset {
t.Errorf("offset is %d in index, %d in cdb", nv.Offset, nv2.Offset)
} else if nv2.Size != nv.Size {
t.Errorf("size is %d in index, %d in cdb", nv.Size, nv2.Size)
}
t.SetBytes(int64(nv.Size))
return nil
})
t.StopTimer()
if err != nil {
t.Errorf("error visiting index: %s", err)
}
i = 0
glog.V(0).Infoln("checking wheter the cdb contains no stray keys")
t.StartTimer()
err = m.Visit(func(nv NeedleValue) error {
if i > t.N || rand.Intn(10) < 9 {
return nil
}
if nv2, ok := m.Get(uint64(nv.Key)); !ok || nv2 == nil {
t.Errorf("%d in cdb, not in index", nv.Key)
} else if nv2.Key != nv.Key {
t.Errorf("requested key %d from index, got %d", nv.Key, nv2.Key)
} else if nv2.Offset != nv.Offset {
t.Errorf("offset is %d in cdb, %d in index", nv.Offset, nv2.Offset)
} else if nv2.Size != nv.Size {
t.Errorf("size is %d in cdb, %d in index", nv.Size, nv2.Size)
}
i++
if i%1000 == 0 {
glog.V(0).Infof("%d. %s", i, nv)
}
t.SetBytes(int64(nv.Size))
return nil
})
t.StopTimer()
if err != nil {
t.Errorf("error visiting index: %s", err)
}
}
var mem = new(runtime.MemStats)
// returns MemStats.Alloc after a GC
func getMemStats() int64 {
runtime.GC()
runtime.ReadMemStats(mem)
return int64(mem.Alloc)
}
|
