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package proxy
import (
"context"
"errors"
"fmt"
"os"
"os/signal"
"strings"
"syscall"
"testing"
"time"
"github.com/stretchr/testify/mock"
"github.com/stretchr/testify/require"
abciclient "github.com/tendermint/tendermint/abci/client"
abcimocks "github.com/tendermint/tendermint/abci/client/mocks"
"github.com/tendermint/tendermint/abci/example/kvstore"
"github.com/tendermint/tendermint/abci/server"
"github.com/tendermint/tendermint/abci/types"
"github.com/tendermint/tendermint/libs/log"
tmrand "github.com/tendermint/tendermint/libs/rand"
"gotest.tools/assert"
)
//----------------------------------------
type appConnTestI interface {
Echo(context.Context, string) (*types.ResponseEcho, error)
Flush(context.Context) error
Info(context.Context, types.RequestInfo) (*types.ResponseInfo, error)
}
type appConnTest struct {
appConn abciclient.Client
}
func newAppConnTest(appConn abciclient.Client) appConnTestI {
return &appConnTest{appConn}
}
func (app *appConnTest) Echo(ctx context.Context, msg string) (*types.ResponseEcho, error) {
return app.appConn.Echo(ctx, msg)
}
func (app *appConnTest) Flush(ctx context.Context) error {
return app.appConn.Flush(ctx)
}
func (app *appConnTest) Info(ctx context.Context, req types.RequestInfo) (*types.ResponseInfo, error) {
return app.appConn.Info(ctx, req)
}
//----------------------------------------
var SOCKET = "socket"
func TestEcho(t *testing.T) {
sockPath := fmt.Sprintf("unix:///tmp/echo_%v.sock", tmrand.Str(6))
logger := log.TestingLogger()
client, err := abciclient.NewClient(logger, sockPath, SOCKET, true)
if err != nil {
t.Fatal(err)
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Start server
s := server.NewSocketServer(logger.With("module", "abci-server"), sockPath, kvstore.NewApplication())
require.NoError(t, s.Start(ctx), "error starting socket server")
t.Cleanup(func() { cancel(); s.Wait() })
// Start client
require.NoError(t, client.Start(ctx), "Error starting ABCI client")
proxy := newAppConnTest(client)
t.Log("Connected")
for i := 0; i < 1000; i++ {
_, err = proxy.Echo(ctx, fmt.Sprintf("echo-%v", i))
if err != nil {
t.Error(err)
}
// flush sometimes
if i%128 == 0 {
if err := proxy.Flush(ctx); err != nil {
t.Error(err)
}
}
}
if err := proxy.Flush(ctx); err != nil {
t.Error(err)
}
}
func BenchmarkEcho(b *testing.B) {
b.StopTimer() // Initialize
sockPath := fmt.Sprintf("unix:///tmp/echo_%v.sock", tmrand.Str(6))
logger := log.TestingLogger()
client, err := abciclient.NewClient(logger, sockPath, SOCKET, true)
if err != nil {
b.Fatal(err)
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Start server
s := server.NewSocketServer(logger.With("module", "abci-server"), sockPath, kvstore.NewApplication())
require.NoError(b, s.Start(ctx), "Error starting socket server")
b.Cleanup(func() { cancel(); s.Wait() })
// Start client
require.NoError(b, client.Start(ctx), "Error starting ABCI client")
proxy := newAppConnTest(client)
b.Log("Connected")
echoString := strings.Repeat(" ", 200)
b.StartTimer() // Start benchmarking tests
for i := 0; i < b.N; i++ {
_, err = proxy.Echo(ctx, echoString)
if err != nil {
b.Error(err)
}
// flush sometimes
if i%128 == 0 {
if err := proxy.Flush(ctx); err != nil {
b.Error(err)
}
}
}
if err := proxy.Flush(ctx); err != nil {
b.Error(err)
}
b.StopTimer()
// info := proxy.Info(types.RequestInfo{""})
// b.Log("N: ", b.N, info)
}
func TestInfo(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
sockPath := fmt.Sprintf("unix:///tmp/echo_%v.sock", tmrand.Str(6))
logger := log.TestingLogger()
client, err := abciclient.NewClient(logger, sockPath, SOCKET, true)
if err != nil {
t.Fatal(err)
}
// Start server
s := server.NewSocketServer(logger.With("module", "abci-server"), sockPath, kvstore.NewApplication())
require.NoError(t, s.Start(ctx), "Error starting socket server")
t.Cleanup(func() { cancel(); s.Wait() })
// Start client
require.NoError(t, client.Start(ctx), "Error starting ABCI client")
proxy := newAppConnTest(client)
t.Log("Connected")
resInfo, err := proxy.Info(ctx, RequestInfo)
require.NoError(t, err)
if resInfo.Data != "{\"size\":0}" {
t.Error("Expected ResponseInfo with one element '{\"size\":0}' but got something else")
}
}
type noopStoppableClientImpl struct {
abciclient.Client
count int
}
func (c *noopStoppableClientImpl) Stop() { c.count++ }
func TestAppConns_Start_Stop(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
clientMock := &abcimocks.Client{}
clientMock.On("Start", mock.Anything).Return(nil)
clientMock.On("Error").Return(nil)
clientMock.On("IsRunning").Return(true)
clientMock.On("Wait").Return(nil).Times(1)
cl := &noopStoppableClientImpl{Client: clientMock}
appConns := New(cl, log.TestingLogger(), NopMetrics())
err := appConns.Start(ctx)
require.NoError(t, err)
time.Sleep(200 * time.Millisecond)
cancel()
appConns.Wait()
clientMock.AssertExpectations(t)
assert.Equal(t, 1, cl.count)
}
// Upon failure, we call tmos.Kill
func TestAppConns_Failure(t *testing.T) {
c := make(chan os.Signal, 1)
signal.Notify(c, syscall.SIGTERM, syscall.SIGABRT)
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
clientMock := &abcimocks.Client{}
clientMock.On("SetLogger", mock.Anything).Return()
clientMock.On("Start", mock.Anything).Return(nil)
clientMock.On("IsRunning").Return(true)
clientMock.On("Wait").Return(nil)
clientMock.On("Error").Return(errors.New("EOF"))
cl := &noopStoppableClientImpl{Client: clientMock}
appConns := New(cl, log.TestingLogger(), NopMetrics())
err := appConns.Start(ctx)
require.NoError(t, err)
t.Cleanup(func() { cancel(); appConns.Wait() })
select {
case sig := <-c:
t.Logf("signal %q successfully received", sig)
case <-ctx.Done():
t.Fatal("expected process to receive SIGTERM signal")
}
}