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package bindings_test
import (
"context"
"encoding/binary"
"io/ioutil"
"net"
"os"
"strings"
"testing"
"time"
"github.com/canonical/go-dqlite/v2/internal/bindings"
"github.com/canonical/go-dqlite/v2/internal/protocol"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestNode_Create(t *testing.T) {
_, cleanup := newNode(t)
defer cleanup()
}
func TestNode_Start(t *testing.T) {
dir, cleanup := newDir(t)
defer cleanup()
server, err := bindings.NewNode(context.Background(), 1, "1", dir)
require.NoError(t, err)
defer server.Close()
err = server.SetBindAddress("@")
require.NoError(t, err)
err = server.Start()
require.NoError(t, err)
conn, err := net.Dial("unix", server.GetBindAddress())
require.NoError(t, err)
conn.Close()
assert.True(t, strings.HasPrefix(server.GetBindAddress(), "@"))
err = server.Stop()
require.NoError(t, err)
}
func TestNode_Restart(t *testing.T) {
dir, cleanup := newDir(t)
defer cleanup()
server, err := bindings.NewNode(context.Background(), 1, "1", dir)
require.NoError(t, err)
require.NoError(t, server.SetBindAddress("@abc"))
require.NoError(t, server.Start())
require.NoError(t, server.Stop())
server.Close()
server, err = bindings.NewNode(context.Background(), 1, "1", dir)
require.NoError(t, err)
require.NoError(t, server.SetBindAddress("@abc"))
require.NoError(t, server.Start())
require.NoError(t, server.Stop())
server.Close()
}
func TestNode_Start_Inet(t *testing.T) {
dir, cleanup := newDir(t)
defer cleanup()
server, err := bindings.NewNode(context.Background(), 1, "1", dir)
require.NoError(t, err)
defer server.Close()
err = server.SetBindAddress("127.0.0.1:9000")
require.NoError(t, err)
err = server.Start()
require.NoError(t, err)
conn, err := net.Dial("tcp", server.GetBindAddress())
require.NoError(t, err)
conn.Close()
err = server.Stop()
require.NoError(t, err)
}
func TestNode_Leader(t *testing.T) {
_, cleanup := newNode(t)
defer cleanup()
conn := newClient(t)
// Make a Leader request
buf := makeClientRequest(t, conn, protocol.RequestLeader)
assert.Equal(t, uint8(1), buf[0])
require.NoError(t, conn.Close())
}
func TestNode_Autorecovery(t *testing.T) {
dir, cleanup := newDir(t)
defer cleanup()
server, err := bindings.NewNode(context.Background(), 1, "1", dir)
require.NoError(t, err)
defer server.Close()
err = server.SetAutoRecovery(false)
require.NoError(t, err)
}
// func TestNode_Heartbeat(t *testing.T) {
// server, cleanup := newNode(t)
// defer cleanup()
// listener, cleanup := newListener(t)
// defer cleanup()
// cleanup = runNode(t, server, listener)
// defer cleanup()
// conn := newClient(t, listener)
// // Make a Heartbeat request
// makeClientRequest(t, conn, bindings.RequestHeartbeat)
// require.NoError(t, conn.Close())
// }
// func TestNode_ConcurrentHandleAndClose(t *testing.T) {
// server, cleanup := newNode(t)
// defer cleanup()
// listener, cleanup := newListener(t)
// defer cleanup()
// acceptCh := make(chan error)
// go func() {
// conn, err := listener.Accept()
// if err != nil {
// acceptCh <- err
// }
// server.Handle(conn)
// acceptCh <- nil
// }()
// conn, err := net.Dial("unix", listener.Addr().String())
// require.NoError(t, err)
// require.NoError(t, conn.Close())
// assert.NoError(t, <-acceptCh)
// }
// Create a new Node object for tests.
func newNode(t *testing.T) (*bindings.Node, func()) {
t.Helper()
dir, dirCleanup := newDir(t)
server, err := bindings.NewNode(context.Background(), 1, "1", dir)
require.NoError(t, err)
err = server.SetBindAddress("@test")
require.NoError(t, err)
require.NoError(t, server.Start())
cleanup := func() {
require.NoError(t, server.Stop())
server.Close()
dirCleanup()
}
return server, cleanup
}
// Create a new client network connection, performing the handshake.
func newClient(t *testing.T) net.Conn {
t.Helper()
conn, err := net.Dial("unix", "@test")
require.NoError(t, err)
// Handshake
err = binary.Write(conn, binary.LittleEndian, protocol.VersionLegacy)
require.NoError(t, err)
return conn
}
// Perform a client request.
func makeClientRequest(t *testing.T, conn net.Conn, kind byte) []byte {
t.Helper()
// Number of words
err := binary.Write(conn, binary.LittleEndian, uint32(1))
require.NoError(t, err)
// Type, flags, extra.
n, err := conn.Write([]byte{kind, 0, 0, 0})
require.NoError(t, err)
require.Equal(t, 4, n)
n, err = conn.Write([]byte{0, 0, 0, 0, 0, 0, 0, 0}) // Unused single-word request payload
require.NoError(t, err)
require.Equal(t, 8, n)
// Read the response
conn.SetDeadline(time.Now().Add(250 * time.Millisecond))
buf := make([]byte, 64)
_, err = conn.Read(buf)
require.NoError(t, err)
return buf
}
// Return a new temporary directory.
func newDir(t *testing.T) (string, func()) {
t.Helper()
dir, err := ioutil.TempDir("", "dqlite-replication-test-")
assert.NoError(t, err)
cleanup := func() {
_, err := os.Stat(dir)
if err != nil {
assert.True(t, os.IsNotExist(err))
} else {
assert.NoError(t, os.RemoveAll(dir))
}
}
return dir, cleanup
}
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