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207 lines
5.3 KiB

package consensus
import (
"bytes"
"crypto/rand"
"fmt"
"io/ioutil"
"os"
"path/filepath"
// "sync"
"testing"
"time"
"github.com/tendermint/tendermint/consensus/types"
"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"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
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.Group().Flush()
h := int64(50)
gr, found, err := wal.SearchForEndHeight(h, &WALSearchOptions{})
assert.NoError(t, err, fmt.Sprintf("expected not to err on height %d", h))
assert.True(t, found, fmt.Sprintf("expected to find end height for %d", h))
assert.NotNil(t, gr, "expected group not to be nil")
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, fmt.Sprintf("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 {
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 TestWALWritePanicsIfMsgIsTooBig(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()
}()
assert.Panics(t, func() { wal.Write(make([]byte, maxMsgSizeBytes+1)) })
}
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, fmt.Sprintf("expected not to err on height %d", h))
assert.True(t, found, fmt.Sprintf("expected to find end height for %d", h))
assert.NotNil(t, gr, "expected group not to be nil")
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, fmt.Sprintf("wrong height"))
}
/*
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)
}