ledisdb/rpl/file_table_test.go

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package rpl
import (
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"io/ioutil"
"os"
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"path"
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"testing"
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"time"
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"github.com/siddontang/go/log"
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)
func TestFileTable(t *testing.T) {
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testFileTable(t, true)
testFileTable(t, false)
}
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func testFileTable(t *testing.T, useMmap bool) {
log.SetLevel(log.LevelInfo)
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base, err := ioutil.TempDir("", "test_table")
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if err != nil {
t.Fatal(err)
}
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os.MkdirAll(base, 0755)
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defer os.RemoveAll(base)
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l := new(Log)
l.Compression = 0
l.Data = make([]byte, 4096)
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w := newTableWriter(base, 1, 1024*1024, useMmap)
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defer w.Close()
for i := 0; i < 10; i++ {
l.ID = uint64(i + 1)
l.CreateTime = uint32(time.Now().Unix())
l.Data[0] = byte(i + 1)
if err := w.StoreLog(l); err != nil {
t.Fatal(err)
}
}
if w.first != 1 {
t.Fatal(w.first)
} else if w.last != 10 {
t.Fatal(w.last)
}
l.ID = 10
if err := w.StoreLog(l); err == nil {
t.Fatal("must err")
}
var ll Log
for i := 0; i < 10; i++ {
if err := w.GetLog(uint64(i+1), &ll); err != nil {
t.Fatal(err)
} else if len(ll.Data) != 4096 {
t.Fatal(len(ll.Data))
} else if ll.Data[0] != byte(i+1) {
t.Fatal(ll.Data[0])
}
}
if err := w.GetLog(12, &ll); err == nil {
t.Fatal("must nil")
}
var r *tableReader
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name := fmtTableDataName(w.base, w.index)
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if r, err = w.Flush(); err != nil {
t.Fatal(err)
}
for i := 10; i < 20; i++ {
l.ID = uint64(i + 1)
l.CreateTime = uint32(time.Now().Unix())
l.Data[0] = byte(i + 1)
if err := w.StoreLog(l); err != nil {
t.Fatal(err)
}
}
if w.first != 11 {
t.Fatal(w.first)
} else if w.last != 20 {
t.Fatal(w.last)
}
defer r.Close()
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for i := 0; i < 10; i++ {
if err := r.GetLog(uint64(i+1), &ll); err != nil {
t.Fatal(err)
} else if len(ll.Data) != 4096 {
t.Fatal(len(ll.Data))
} else if ll.Data[0] != byte(i+1) {
t.Fatal(ll.Data[0])
}
}
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if err := r.GetLog(12, &ll); err == nil {
t.Fatal("must nil")
}
r.Close()
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if r, err = newTableReader(base, 1, useMmap); err != nil {
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t.Fatal(err)
}
defer r.Close()
for i := 0; i < 10; i++ {
if err := r.GetLog(uint64(i+1), &ll); err != nil {
t.Fatal(err)
} else if len(ll.Data) != 4096 {
t.Fatal(len(ll.Data))
} else if ll.Data[0] != byte(i+1) {
t.Fatal(ll.Data[0])
}
}
if err := r.GetLog(12, &ll); err == nil {
t.Fatal("must nil")
}
s := int64(r.data.Size())
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r.Close()
log.SetLevel(log.LevelFatal)
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testRepair(t, name, 1, s, 11, useMmap)
testRepair(t, name, 1, s, 20, useMmap)
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if err := os.Truncate(name, s-21); err != nil {
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t.Fatal(err)
}
if r, err := w.Flush(); err != nil {
t.Fatal(err)
} else {
r.Close()
}
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if r, err = newTableReader(base, 2, useMmap); err != nil {
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t.Fatal(err)
}
r.Close()
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}
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func testRepair(t *testing.T, name string, index int64, s int64, cutSize int64, useMmap bool) {
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var r *tableReader
var err error
if err := os.Truncate(name, s-cutSize); err != nil {
t.Fatal(err)
}
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if r, err = newTableReader(path.Dir(name), index, useMmap); err != nil {
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t.Fatal(err)
}
defer r.Close()
var ll Log
for i := 0; i < 10; i++ {
if err := r.GetLog(uint64(i+1), &ll); err != nil {
t.Fatal(err, i)
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} else if len(ll.Data) != 4096 {
t.Fatal(len(ll.Data))
} else if ll.Data[0] != byte(i+1) {
t.Fatal(ll.Data[0])
}
}
if err := r.GetLog(12, &ll); err == nil {
t.Fatal("must nil")
}
if s != int64(r.data.Size()) {
t.Fatalf("repair error size %d != %d", s, r.data.Size())
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}
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}