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// Copyright 2020 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cluster
import (
"bufio"
context2 "context"
"fmt"
"io"
"net"
"sync"
"testing"
"time"
"github.com/go-kit/log"
"github.com/stretchr/testify/require"
)
var logger = log.NewNopLogger()
func freeport() int {
lis, _ := net.Listen(network, "127.0.0.1:0")
defer lis.Close()
return lis.Addr().(*net.TCPAddr).Port
}
func newTLSTransport(file, address string, port int) (*TLSTransport, error) {
cfg, err := GetTLSTransportConfig(file)
if err != nil {
return nil, err
}
return NewTLSTransport(context2.Background(), log.NewNopLogger(), nil, address, port, cfg)
}
func TestNewTLSTransport(t *testing.T) {
port := freeport()
for _, tc := range []struct {
bindAddr string
bindPort int
tlsConfFile string
err string
}{
{
err: "must specify TLSTransportConfig",
},
{
tlsConfFile: "testdata/empty_tls_config.yml",
err: "missing 'tls_server_config' entry in the TLS configuration",
},
{
tlsConfFile: "testdata/tls_config_with_missing_server.yml",
err: "missing 'tls_server_config' entry in the TLS configuration",
},
{
err: "invalid bind address \"\"",
tlsConfFile: "testdata/tls_config_node1.yml",
},
{
bindAddr: "abc123",
err: "invalid bind address \"abc123\"",
tlsConfFile: "testdata/tls_config_node1.yml",
},
{
bindAddr: localhost,
bindPort: 0,
tlsConfFile: "testdata/tls_config_node1.yml",
},
{
bindAddr: localhost,
bindPort: port,
tlsConfFile: "testdata/tls_config_node2.yml",
},
{
tlsConfFile: "testdata/tls_config_with_missing_client.yml",
bindAddr: localhost,
},
} {
t.Run("", func(t *testing.T) {
transport, err := newTLSTransport(tc.tlsConfFile, tc.bindAddr, tc.bindPort)
if len(tc.err) > 0 {
require.Error(t, err)
require.Equal(t, tc.err, err.Error())
return
}
defer transport.Shutdown()
require.NoError(t, err)
require.Equal(t, tc.bindAddr, transport.bindAddr)
require.Equal(t, tc.bindPort, transport.bindPort)
require.NotNil(t, transport.listener)
})
}
}
const localhost = "127.0.0.1"
func TestFinalAdvertiseAddr(t *testing.T) {
ports := [...]int{freeport(), freeport(), freeport()}
testCases := []struct {
bindAddr string
bindPort int
inputIP string
inputPort int
expectedIP string
expectedPort int
expectedError string
}{
{bindAddr: localhost, bindPort: ports[0], inputIP: "10.0.0.5", inputPort: 54231, expectedIP: "10.0.0.5", expectedPort: 54231},
{bindAddr: localhost, bindPort: ports[1], inputIP: "invalid", inputPort: 54231, expectedError: "failed to parse advertise address \"invalid\""},
{bindAddr: "0.0.0.0", bindPort: 0, inputIP: "", inputPort: 0, expectedIP: "random"},
{bindAddr: localhost, bindPort: 0, inputIP: "", inputPort: 0, expectedIP: localhost},
{bindAddr: localhost, bindPort: ports[2], inputIP: "", inputPort: 0, expectedIP: localhost, expectedPort: ports[2]},
}
for _, tc := range testCases {
tlsConf := loadTLSTransportConfig(t, "testdata/tls_config_node1.yml")
transport, err := NewTLSTransport(context2.Background(), logger, nil, tc.bindAddr, tc.bindPort, tlsConf)
require.Nil(t, err)
ip, port, err := transport.FinalAdvertiseAddr(tc.inputIP, tc.inputPort)
if len(tc.expectedError) > 0 {
require.Equal(t, tc.expectedError, err.Error())
} else {
require.Nil(t, err)
if tc.expectedPort == 0 {
require.True(t, tc.expectedPort < port)
} else {
require.Equal(t, tc.expectedPort, port)
}
if tc.expectedIP == "random" {
require.NotNil(t, ip)
} else {
require.Equal(t, tc.expectedIP, ip.String())
}
}
transport.Shutdown()
}
}
func TestWriteTo(t *testing.T) {
tlsConf1 := loadTLSTransportConfig(t, "testdata/tls_config_node1.yml")
t1, _ := NewTLSTransport(context2.Background(), logger, nil, "127.0.0.1", 0, tlsConf1)
defer t1.Shutdown()
tlsConf2 := loadTLSTransportConfig(t, "testdata/tls_config_node2.yml")
t2, _ := NewTLSTransport(context2.Background(), logger, nil, "127.0.0.1", 0, tlsConf2)
defer t2.Shutdown()
from := fmt.Sprintf("%s:%d", t1.bindAddr, t1.GetAutoBindPort())
to := fmt.Sprintf("%s:%d", t2.bindAddr, t2.GetAutoBindPort())
sent := []byte(("test packet"))
_, err := t1.WriteTo(sent, to)
require.Nil(t, err)
packet := <-t2.PacketCh()
require.Equal(t, sent, packet.Buf)
require.Equal(t, from, packet.From.String())
}
func BenchmarkWriteTo(b *testing.B) {
tlsConf1 := loadTLSTransportConfig(b, "testdata/tls_config_node1.yml")
t1, _ := NewTLSTransport(context2.Background(), logger, nil, "127.0.0.1", 0, tlsConf1)
defer t1.Shutdown()
tlsConf2 := loadTLSTransportConfig(b, "testdata/tls_config_node2.yml")
t2, _ := NewTLSTransport(context2.Background(), logger, nil, "127.0.0.1", 0, tlsConf2)
defer t2.Shutdown()
b.ResetTimer()
from := fmt.Sprintf("%s:%d", t1.bindAddr, t1.GetAutoBindPort())
to := fmt.Sprintf("%s:%d", t2.bindAddr, t2.GetAutoBindPort())
sent := []byte(("test packet"))
_, err := t1.WriteTo(sent, to)
require.Nil(b, err)
packet := <-t2.PacketCh()
require.Equal(b, sent, packet.Buf)
require.Equal(b, from, packet.From.String())
}
func TestDialTimeout(t *testing.T) {
tlsConf1 := loadTLSTransportConfig(t, "testdata/tls_config_node1.yml")
t1, err := NewTLSTransport(context2.Background(), logger, nil, "127.0.0.1", 0, tlsConf1)
require.Nil(t, err)
defer t1.Shutdown()
tlsConf2 := loadTLSTransportConfig(t, "testdata/tls_config_node2.yml")
t2, err := NewTLSTransport(context2.Background(), logger, nil, "127.0.0.1", 0, tlsConf2)
require.Nil(t, err)
defer t2.Shutdown()
addr := fmt.Sprintf("%s:%d", t2.bindAddr, t2.GetAutoBindPort())
from, err := t1.DialTimeout(addr, 5*time.Second)
require.Nil(t, err)
defer from.Close()
var to net.Conn
var wg sync.WaitGroup
wg.Add(1)
go func() {
to = <-t2.StreamCh()
wg.Done()
}()
sent := []byte(("test stream"))
m, err := from.Write(sent)
require.Nil(t, err)
require.Greater(t, m, 0)
wg.Wait()
reader := bufio.NewReader(to)
buf := make([]byte, len(sent))
n, err := io.ReadFull(reader, buf)
require.Nil(t, err)
require.Equal(t, len(sent), n)
require.Equal(t, sent, buf)
}
type logWr struct {
bytes []byte
}
func (l *logWr) Write(p []byte) (n int, err error) {
l.bytes = append(l.bytes, p...)
return len(p), nil
}
func TestShutdown(t *testing.T) {
tlsConf1 := loadTLSTransportConfig(t, "testdata/tls_config_node1.yml")
l := &logWr{}
t1, _ := NewTLSTransport(context2.Background(), log.NewLogfmtLogger(l), nil, "127.0.0.1", 0, tlsConf1)
// Sleeping to make sure listeners have started and can subsequently be shut down gracefully.
time.Sleep(500 * time.Millisecond)
err := t1.Shutdown()
require.Nil(t, err)
require.NotContains(t, string(l.bytes), "use of closed network connection")
require.Contains(t, string(l.bytes), "shutting down tls transport")
}
func loadTLSTransportConfig(tb testing.TB, filename string) *TLSTransportConfig {
tb.Helper()
config, err := GetTLSTransportConfig(filename)
if err != nil {
tb.Fatal(err)
}
return config
}