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6.6 KiB

package consensus
import (
"bytes"
"crypto/rand"
"io/ioutil"
"os"
"path/filepath"
// "sync"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/tendermint/tendermint/consensus/types"
"github.com/tendermint/tendermint/crypto/merkle"
"github.com/tendermint/tendermint/libs/autofile"
"github.com/tendermint/tendermint/libs/log"
tmtypes "github.com/tendermint/tendermint/types"
tmtime "github.com/tendermint/tendermint/types/time"
)
const (
walTestFlushInterval = time.Duration(100) * time.Millisecond
)
func TestWALTruncate(t *testing.T) {
walDir, err := ioutil.TempDir("", "wal")
require.NoError(t, err)
defer os.RemoveAll(walDir)
walFile := filepath.Join(walDir, "wal")
// this magic number 4K can truncate the content when RotateFile.
// defaultHeadSizeLimit(10M) is hard to simulate.
// this magic number 1 * time.Millisecond make RotateFile check frequently.
// defaultGroupCheckDuration(5s) is hard to simulate.
wal, err := NewWAL(walFile,
autofile.GroupHeadSizeLimit(4096),
autofile.GroupCheckDuration(1*time.Millisecond),
)
require.NoError(t, err)
wal.SetLogger(log.TestingLogger())
err = wal.Start()
require.NoError(t, err)
defer func() {
wal.Stop()
// wait for the wal to finish shutting down so we
// can safely remove the directory
wal.Wait()
}()
// 60 block's size nearly 70K, greater than group's headBuf size(4096 * 10),
// when headBuf is full, truncate content will Flush to the file. at this
// time, RotateFile is called, truncate content exist in each file.
err = WALGenerateNBlocks(t, wal.Group(), 60)
require.NoError(t, err)
time.Sleep(1 * time.Millisecond) //wait groupCheckDuration, make sure RotateFile run
wal.FlushAndSync()
h := int64(50)
gr, found, err := wal.SearchForEndHeight(h, &WALSearchOptions{})
assert.NoError(t, err, "expected not to err on height %d", h)
assert.True(t, found, "expected to find end height for %d", h)
assert.NotNil(t, gr)
defer gr.Close()
dec := NewWALDecoder(gr)
msg, err := dec.Decode()
assert.NoError(t, err, "expected to decode a message")
rs, ok := msg.Msg.(tmtypes.EventDataRoundState)
assert.True(t, ok, "expected message of type EventDataRoundState")
assert.Equal(t, rs.Height, h+1, "wrong height")
}
func TestWALEncoderDecoder(t *testing.T) {
now := tmtime.Now()
msgs := []TimedWALMessage{
{Time: now, Msg: EndHeightMessage{0}},
{Time: now, Msg: timeoutInfo{Duration: time.Second, Height: 1, Round: 1, Step: types.RoundStepPropose}},
}
b := new(bytes.Buffer)
for _, msg := range msgs {
msg := msg
b.Reset()
enc := NewWALEncoder(b)
err := enc.Encode(&msg)
require.NoError(t, err)
dec := NewWALDecoder(b)
decoded, err := dec.Decode()
require.NoError(t, err)
assert.Equal(t, msg.Time.UTC(), decoded.Time)
assert.Equal(t, msg.Msg, decoded.Msg)
}
}
func TestWALWrite(t *testing.T) {
walDir, err := ioutil.TempDir("", "wal")
require.NoError(t, err)
defer os.RemoveAll(walDir)
walFile := filepath.Join(walDir, "wal")
wal, err := NewWAL(walFile)
require.NoError(t, err)
err = wal.Start()
require.NoError(t, err)
defer func() {
wal.Stop()
// wait for the wal to finish shutting down so we
// can safely remove the directory
wal.Wait()
}()
// 1) Write returns an error if msg is too big
msg := &BlockPartMessage{
Height: 1,
Round: 1,
Part: &tmtypes.Part{
Index: 1,
Bytes: make([]byte, 1),
Proof: merkle.SimpleProof{
Total: 1,
Index: 1,
LeafHash: make([]byte, maxMsgSizeBytes-30),
},
},
}
err = wal.Write(msg)
if assert.Error(t, err) {
assert.Contains(t, err.Error(), "msg is too big")
}
}
func TestWALSearchForEndHeight(t *testing.T) {
walBody, err := WALWithNBlocks(t, 6)
if err != nil {
t.Fatal(err)
}
walFile := tempWALWithData(walBody)
wal, err := NewWAL(walFile)
require.NoError(t, err)
wal.SetLogger(log.TestingLogger())
h := int64(3)
gr, found, err := wal.SearchForEndHeight(h, &WALSearchOptions{})
assert.NoError(t, err, "expected not to err on height %d", h)
assert.True(t, found, "expected to find end height for %d", h)
assert.NotNil(t, gr)
defer gr.Close()
dec := NewWALDecoder(gr)
msg, err := dec.Decode()
assert.NoError(t, err, "expected to decode a message")
rs, ok := msg.Msg.(tmtypes.EventDataRoundState)
assert.True(t, ok, "expected message of type EventDataRoundState")
assert.Equal(t, rs.Height, h+1, "wrong height")
}
func TestWALPeriodicSync(t *testing.T) {
walDir, err := ioutil.TempDir("", "wal")
require.NoError(t, err)
defer os.RemoveAll(walDir)
walFile := filepath.Join(walDir, "wal")
wal, err := NewWAL(walFile, autofile.GroupCheckDuration(1*time.Millisecond))
require.NoError(t, err)
wal.SetFlushInterval(walTestFlushInterval)
wal.SetLogger(log.TestingLogger())
// Generate some data
err = WALGenerateNBlocks(t, wal.Group(), 5)
require.NoError(t, err)
// We should have data in the buffer now
assert.NotZero(t, wal.Group().Buffered())
require.NoError(t, wal.Start())
defer func() {
wal.Stop()
wal.Wait()
}()
time.Sleep(walTestFlushInterval + (10 * time.Millisecond))
// The data should have been flushed by the periodic sync
assert.Zero(t, wal.Group().Buffered())
h := int64(4)
gr, found, err := wal.SearchForEndHeight(h, &WALSearchOptions{})
assert.NoError(t, err, "expected not to err on height %d", h)
assert.True(t, found, "expected to find end height for %d", h)
assert.NotNil(t, gr)
if gr != nil {
gr.Close()
}
}
/*
var initOnce sync.Once
func registerInterfacesOnce() {
initOnce.Do(func() {
var _ = wire.RegisterInterface(
struct{ WALMessage }{},
wire.ConcreteType{[]byte{}, 0x10},
)
})
}
*/
func nBytes(n int) []byte {
buf := make([]byte, n)
n, _ = rand.Read(buf)
return buf[:n]
}
func benchmarkWalDecode(b *testing.B, n int) {
// registerInterfacesOnce()
buf := new(bytes.Buffer)
enc := NewWALEncoder(buf)
data := nBytes(n)
enc.Encode(&TimedWALMessage{Msg: data, Time: time.Now().Round(time.Second).UTC()})
encoded := buf.Bytes()
b.ResetTimer()
for i := 0; i < b.N; i++ {
buf.Reset()
buf.Write(encoded)
dec := NewWALDecoder(buf)
if _, err := dec.Decode(); err != nil {
b.Fatal(err)
}
}
b.ReportAllocs()
}
func BenchmarkWalDecode512B(b *testing.B) {
benchmarkWalDecode(b, 512)
}
func BenchmarkWalDecode10KB(b *testing.B) {
benchmarkWalDecode(b, 10*1024)
}
func BenchmarkWalDecode100KB(b *testing.B) {
benchmarkWalDecode(b, 100*1024)
}
func BenchmarkWalDecode1MB(b *testing.B) {
benchmarkWalDecode(b, 1024*1024)
}
func BenchmarkWalDecode10MB(b *testing.B) {
benchmarkWalDecode(b, 10*1024*1024)
}
func BenchmarkWalDecode100MB(b *testing.B) {
benchmarkWalDecode(b, 100*1024*1024)
}
func BenchmarkWalDecode1GB(b *testing.B) {
benchmarkWalDecode(b, 1024*1024*1024)
}