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broker_test.go
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package sarama
import (
"bytes"
"errors"
"fmt"
"net"
"reflect"
"testing"
"time"
"github.com/jcmturner/gokrb5/v8/krberror"
"github.com/rcrowley/go-metrics"
)
func ExampleBroker() {
broker := NewBroker("localhost:9092")
err := broker.Open(nil)
if err != nil {
panic(err)
}
request := MetadataRequest{Topics: []string{"myTopic"}}
response, err := broker.GetMetadata(&request)
if err != nil {
_ = broker.Close()
panic(err)
}
fmt.Println("There are", len(response.Topics), "topics active in the cluster.")
if err = broker.Close(); err != nil {
panic(err)
}
}
type mockEncoder struct {
bytes []byte
}
func (m mockEncoder) encode(pe packetEncoder) error {
return pe.putRawBytes(m.bytes)
}
func (m mockEncoder) headerVersion() int16 {
return 0
}
type brokerMetrics struct {
bytesRead int
bytesWritten int
}
func TestBrokerAccessors(t *testing.T) {
broker := NewBroker("abc:123")
if broker.ID() != -1 {
t.Error("New broker didn't have an ID of -1.")
}
if broker.Addr() != "abc:123" {
t.Error("New broker didn't have the correct address")
}
if broker.Rack() != "" {
t.Error("New broker didn't have an unknown rack.")
}
broker.id = 34
if broker.ID() != 34 {
t.Error("Manually setting broker ID did not take effect.")
}
rack := "dc1"
broker.rack = &rack
if broker.Rack() != rack {
t.Error("Manually setting broker rack did not take effect.")
}
}
type produceResponsePromise struct {
c chan produceResOrError
}
type produceResOrError struct {
res *ProduceResponse
err error
}
func newProduceResponsePromise() produceResponsePromise {
return produceResponsePromise{
c: make(chan produceResOrError, 0),
}
}
func (p produceResponsePromise) callback(res *ProduceResponse, err error) {
if err != nil {
p.c <- produceResOrError{
err: err,
}
return
}
p.c <- produceResOrError{
res: res,
}
}
func (p produceResponsePromise) Get() (*ProduceResponse, error) {
resOrError := <-p.c
return resOrError.res, resOrError.err
}
func TestSimpleBrokerCommunication(t *testing.T) {
for _, tt := range brokerTestTable {
tt := tt
t.Run(tt.name, func(t *testing.T) {
Logger.Printf("Testing broker communication for %s", tt.name)
mb := NewMockBroker(t, 0)
mb.Returns(&mockEncoder{tt.response})
pendingNotify := make(chan brokerMetrics)
// Register a callback to be notified about successful requests
mb.SetNotifier(func(bytesRead, bytesWritten int) {
pendingNotify <- brokerMetrics{bytesRead, bytesWritten}
})
broker := NewBroker(mb.Addr())
// Set the broker id in order to validate local broker metrics
broker.id = 0
conf := NewTestConfig()
conf.ApiVersionsRequest = false
conf.Version = tt.version
err := broker.Open(conf)
if err != nil {
t.Fatal(err)
}
tt.runner(t, broker)
// Wait up to 500 ms for the remote broker to process the request and
// notify us about the metrics
timeout := 500 * time.Millisecond
select {
case mockBrokerMetrics := <-pendingNotify:
validateBrokerMetrics(t, broker, mockBrokerMetrics)
case <-time.After(timeout):
t.Errorf("No request received for: %s after waiting for %v", tt.name, timeout)
}
mb.Close()
err = broker.Close()
if err != nil {
t.Error(err)
}
})
}
}
func TestBrokerFailedRequest(t *testing.T) {
for _, tt := range brokerFailedReqTestTable {
tt := tt
t.Run(tt.name, func(t *testing.T) {
t.Logf("Testing broker communication for %s", tt.name)
mb := NewMockBroker(t, 0)
if !tt.stopBroker {
mb.Returns(&mockEncoder{tt.response})
}
broker := NewBroker(mb.Addr())
// Stop the broker before calling the runner to purposefully
// make the request fail right away, the port will be closed
// and should not be reused right away
if tt.stopBroker {
t.Log("Closing broker:", mb.Addr())
mb.Close()
}
conf := NewTestConfig()
conf.ApiVersionsRequest = false
conf.Version = tt.version
// Tune read timeout to speed up some test cases
conf.Net.ReadTimeout = 1 * time.Second
err := broker.Open(conf)
if err != nil {
t.Fatal(err)
}
tt.runner(t, broker)
if !tt.stopBroker {
mb.Close()
}
err = broker.Close()
if err != nil {
if tt.stopBroker && errors.Is(err, ErrNotConnected) {
// We expect the broker to not close properly
return
}
t.Error(err)
}
})
}
}
var ErrTokenFailure = errors.New("Failure generating token")
type TokenProvider struct {
accessToken *AccessToken
err error
}
func (t *TokenProvider) Token() (*AccessToken, error) {
return t.accessToken, t.err
}
func newTokenProvider(token *AccessToken, err error) *TokenProvider {
return &TokenProvider{
accessToken: token,
err: err,
}
}
func TestSASLOAuthBearer(t *testing.T) {
testTable := []struct {
name string
authidentity string
mockSASLHandshakeResponse MockResponse // Mock SaslHandshakeRequest response from broker
mockSASLAuthResponse MockResponse // Mock SaslAuthenticateRequest response from broker
expectClientErr bool // Expect an internal client-side error
expectedBrokerError KError // Expected Kafka error returned by client
tokProvider *TokenProvider
}{
{
name: "SASL/OAUTHBEARER OK server response",
mockSASLHandshakeResponse: NewMockSaslHandshakeResponse(t).
SetEnabledMechanisms([]string{SASLTypeOAuth}),
mockSASLAuthResponse: NewMockSaslAuthenticateResponse(t),
expectClientErr: false,
expectedBrokerError: ErrNoError,
tokProvider: newTokenProvider(&AccessToken{Token: "access-token-123"}, nil),
},
{
name: "SASL/OAUTHBEARER authentication failure response",
mockSASLHandshakeResponse: NewMockSaslHandshakeResponse(t).
SetEnabledMechanisms([]string{SASLTypeOAuth}),
mockSASLAuthResponse: NewMockSequence(
// First, the broker response with a challenge
NewMockSaslAuthenticateResponse(t).
SetAuthBytes([]byte(`{"status":"invalid_request1"}`)),
// Next, the client terminates the token exchange. Finally, the
// broker responds with an error message.
NewMockSaslAuthenticateResponse(t).
SetAuthBytes([]byte(`{"status":"invalid_request2"}`)).
SetError(ErrSASLAuthenticationFailed),
),
expectClientErr: true,
expectedBrokerError: ErrSASLAuthenticationFailed,
tokProvider: newTokenProvider(&AccessToken{Token: "access-token-123"}, nil),
},
{
name: "SASL/OAUTHBEARER handshake failure response",
mockSASLHandshakeResponse: NewMockSaslHandshakeResponse(t).
SetEnabledMechanisms([]string{SASLTypeOAuth}).
SetError(ErrSASLAuthenticationFailed),
mockSASLAuthResponse: NewMockSaslAuthenticateResponse(t),
expectClientErr: true,
expectedBrokerError: ErrSASLAuthenticationFailed,
tokProvider: newTokenProvider(&AccessToken{Token: "access-token-123"}, nil),
},
{
name: "SASL/OAUTHBEARER token generation error",
mockSASLHandshakeResponse: NewMockSaslHandshakeResponse(t).
SetEnabledMechanisms([]string{SASLTypeOAuth}),
mockSASLAuthResponse: NewMockSaslAuthenticateResponse(t),
expectClientErr: true,
expectedBrokerError: ErrNoError,
tokProvider: newTokenProvider(&AccessToken{Token: "access-token-123"}, ErrTokenFailure),
},
{
name: "SASL/OAUTHBEARER invalid extension",
mockSASLHandshakeResponse: NewMockSaslHandshakeResponse(t).
SetEnabledMechanisms([]string{SASLTypeOAuth}),
mockSASLAuthResponse: NewMockSaslAuthenticateResponse(t),
expectClientErr: true,
expectedBrokerError: ErrNoError,
tokProvider: newTokenProvider(&AccessToken{
Token: "access-token-123",
Extensions: map[string]string{"auth": "auth-value"},
}, nil),
},
}
for i, test := range testTable {
test := test
t.Run(test.name, func(t *testing.T) {
// mockBroker mocks underlying network logic and broker responses
mockBroker := NewMockBroker(t, 0)
mockBroker.SetHandlerByMap(map[string]MockResponse{
"SaslAuthenticateRequest": test.mockSASLAuthResponse,
"SaslHandshakeRequest": test.mockSASLHandshakeResponse,
})
// broker executes SASL requests against mockBroker
broker := NewBroker(mockBroker.Addr())
broker.requestRate = metrics.NilMeter{}
broker.outgoingByteRate = metrics.NilMeter{}
broker.incomingByteRate = metrics.NilMeter{}
broker.requestSize = metrics.NilHistogram{}
broker.responseSize = metrics.NilHistogram{}
broker.responseRate = metrics.NilMeter{}
broker.requestLatency = metrics.NilHistogram{}
broker.requestsInFlight = metrics.NilCounter{}
conf := NewTestConfig()
conf.Net.SASL.Mechanism = SASLTypeOAuth
conf.Net.SASL.TokenProvider = test.tokProvider
broker.conf = conf
dialer := net.Dialer{
Timeout: conf.Net.DialTimeout,
KeepAlive: conf.Net.KeepAlive,
LocalAddr: conf.Net.LocalAddr,
}
conn, err := dialer.Dial("tcp", mockBroker.listener.Addr().String())
if err != nil {
t.Fatal(err)
}
broker.conn = conn
err = broker.authenticateViaSASL()
if !errors.Is(test.expectedBrokerError, ErrNoError) {
if !errors.Is(err, test.expectedBrokerError) {
t.Errorf("[%d]:[%s] Expected %s auth error, got %s\n", i, test.name, test.expectedBrokerError, err)
}
} else if test.expectClientErr && err == nil {
t.Errorf("[%d]:[%s] Expected a client error and got none\n", i, test.name)
} else if !test.expectClientErr && err != nil {
t.Errorf("[%d]:[%s] Unexpected error, got %s\n", i, test.name, err)
}
mockBroker.Close()
})
}
}
// A mock scram client.
type MockSCRAMClient struct {
done bool
}
func (m *MockSCRAMClient) Begin(_, _, _ string) (err error) {
return nil
}
func (m *MockSCRAMClient) Step(challenge string) (response string, err error) {
if challenge == "" {
return "ping", nil
}
if challenge == "pong" {
m.done = true
return "", nil
}
return "", errors.New("failed to authenticate :(")
}
func (m *MockSCRAMClient) Done() bool {
return m.done
}
var _ SCRAMClient = &MockSCRAMClient{}
func TestSASLSCRAMSHAXXX(t *testing.T) {
testTable := []struct {
name string
mockHandshakeErr KError
mockSASLAuthErr KError
expectClientErr bool
scramClient *MockSCRAMClient
scramChallengeResp string
}{
{
name: "SASL/SCRAMSHAXXX successful authentication",
mockHandshakeErr: ErrNoError,
scramClient: &MockSCRAMClient{},
scramChallengeResp: "pong",
},
{
name: "SASL/SCRAMSHAXXX SCRAM client step error client",
mockHandshakeErr: ErrNoError,
mockSASLAuthErr: ErrNoError,
scramClient: &MockSCRAMClient{},
scramChallengeResp: "gong",
expectClientErr: true,
},
{
name: "SASL/SCRAMSHAXXX server authentication error",
mockHandshakeErr: ErrNoError,
mockSASLAuthErr: ErrSASLAuthenticationFailed,
scramClient: &MockSCRAMClient{},
scramChallengeResp: "pong",
},
{
name: "SASL/SCRAMSHAXXX unsupported SCRAM mechanism",
mockHandshakeErr: ErrUnsupportedSASLMechanism,
mockSASLAuthErr: ErrNoError,
scramClient: &MockSCRAMClient{},
scramChallengeResp: "pong",
},
}
for i, test := range testTable {
test := test
t.Run(test.name, func(t *testing.T) {
// mockBroker mocks underlying network logic and broker responses
mockBroker := NewMockBroker(t, 0)
broker := NewBroker(mockBroker.Addr())
// broker executes SASL requests against mockBroker
broker.requestRate = metrics.NilMeter{}
broker.outgoingByteRate = metrics.NilMeter{}
broker.incomingByteRate = metrics.NilMeter{}
broker.requestSize = metrics.NilHistogram{}
broker.responseSize = metrics.NilHistogram{}
broker.responseRate = metrics.NilMeter{}
broker.requestLatency = metrics.NilHistogram{}
broker.requestsInFlight = metrics.NilCounter{}
mockSASLAuthResponse := NewMockSaslAuthenticateResponse(t).SetAuthBytes([]byte(test.scramChallengeResp))
mockSASLHandshakeResponse := NewMockSaslHandshakeResponse(t).SetEnabledMechanisms([]string{SASLTypeSCRAMSHA256, SASLTypeSCRAMSHA512})
if !errors.Is(test.mockSASLAuthErr, ErrNoError) {
mockSASLAuthResponse = mockSASLAuthResponse.SetError(test.mockSASLAuthErr)
}
if !errors.Is(test.mockHandshakeErr, ErrNoError) {
mockSASLHandshakeResponse = mockSASLHandshakeResponse.SetError(test.mockHandshakeErr)
}
mockBroker.SetHandlerByMap(map[string]MockResponse{
"SaslAuthenticateRequest": mockSASLAuthResponse,
"SaslHandshakeRequest": mockSASLHandshakeResponse,
})
conf := NewTestConfig()
conf.Net.SASL.Mechanism = SASLTypeSCRAMSHA512
conf.Net.SASL.Version = SASLHandshakeV1
conf.Net.SASL.SCRAMClientGeneratorFunc = func() SCRAMClient { return test.scramClient }
broker.conf = conf
broker.conf.Version = V1_0_0_0
dialer := net.Dialer{
Timeout: conf.Net.DialTimeout,
KeepAlive: conf.Net.KeepAlive,
LocalAddr: conf.Net.LocalAddr,
}
conn, err := dialer.Dial("tcp", mockBroker.listener.Addr().String())
if err != nil {
t.Fatal(err)
}
broker.conn = conn
err = broker.authenticateViaSASL()
if !errors.Is(test.mockSASLAuthErr, ErrNoError) {
if !errors.Is(err, test.mockSASLAuthErr) {
t.Errorf("[%d]:[%s] Expected %s SASL authentication error, got %s\n", i, test.name, test.mockHandshakeErr, err)
}
} else if !errors.Is(test.mockHandshakeErr, ErrNoError) {
if !errors.Is(err, test.mockHandshakeErr) {
t.Errorf("[%d]:[%s] Expected %s handshake error, got %s\n", i, test.name, test.mockHandshakeErr, err)
}
} else if test.expectClientErr && err == nil {
t.Errorf("[%d]:[%s] Expected a client error and got none\n", i, test.name)
} else if !test.expectClientErr && err != nil {
t.Errorf("[%d]:[%s] Unexpected error, got %s\n", i, test.name, err)
}
mockBroker.Close()
})
}
}
func TestSASLPlainAuth(t *testing.T) {
testTable := []struct {
name string
authidentity string
mockAuthErr KError // Mock and expect error returned from SaslAuthenticateRequest
mockHandshakeErr KError // Mock and expect error returned from SaslHandshakeRequest
expectClientErr bool // Expect an internal client-side error
}{
{
name: "SASL Plain OK server response",
mockAuthErr: ErrNoError,
mockHandshakeErr: ErrNoError,
},
{
name: "SASL Plain OK server response with authidentity",
authidentity: "authid",
mockAuthErr: ErrNoError,
mockHandshakeErr: ErrNoError,
},
{
name: "SASL Plain authentication failure response",
mockAuthErr: ErrSASLAuthenticationFailed,
mockHandshakeErr: ErrNoError,
},
{
name: "SASL Plain handshake failure response",
mockAuthErr: ErrNoError,
mockHandshakeErr: ErrSASLAuthenticationFailed,
},
}
for i, test := range testTable {
test := test
t.Run(test.name, func(t *testing.T) {
// mockBroker mocks underlying network logic and broker responses
mockBroker := NewMockBroker(t, 0)
mockSASLAuthResponse := NewMockSaslAuthenticateResponse(t).
SetAuthBytes([]byte(`response_payload`))
if !errors.Is(test.mockAuthErr, ErrNoError) {
mockSASLAuthResponse = mockSASLAuthResponse.SetError(test.mockAuthErr)
}
mockSASLHandshakeResponse := NewMockSaslHandshakeResponse(t).
SetEnabledMechanisms([]string{SASLTypePlaintext})
if !errors.Is(test.mockHandshakeErr, ErrNoError) {
mockSASLHandshakeResponse = mockSASLHandshakeResponse.SetError(test.mockHandshakeErr)
}
mockBroker.SetHandlerByMap(map[string]MockResponse{
"SaslAuthenticateRequest": mockSASLAuthResponse,
"SaslHandshakeRequest": mockSASLHandshakeResponse,
})
// broker executes SASL requests against mockBroker
broker := NewBroker(mockBroker.Addr())
broker.requestRate = metrics.NilMeter{}
broker.outgoingByteRate = metrics.NilMeter{}
broker.incomingByteRate = metrics.NilMeter{}
broker.requestSize = metrics.NilHistogram{}
broker.responseSize = metrics.NilHistogram{}
broker.responseRate = metrics.NilMeter{}
broker.requestLatency = metrics.NilHistogram{}
broker.requestsInFlight = metrics.NilCounter{}
conf := NewTestConfig()
conf.Net.SASL.Mechanism = SASLTypePlaintext
conf.Net.SASL.AuthIdentity = test.authidentity
conf.Net.SASL.User = "token"
conf.Net.SASL.Password = "password"
conf.Net.SASL.Version = SASLHandshakeV1
broker.conf = conf
broker.conf.Version = V1_0_0_0
dialer := net.Dialer{
Timeout: conf.Net.DialTimeout,
KeepAlive: conf.Net.KeepAlive,
LocalAddr: conf.Net.LocalAddr,
}
conn, err := dialer.Dial("tcp", mockBroker.listener.Addr().String())
if err != nil {
t.Fatal(err)
}
broker.conn = conn
err = broker.authenticateViaSASL()
if err == nil {
for _, rr := range mockBroker.History() {
switch r := rr.Request.(type) {
case *SaslAuthenticateRequest:
x := bytes.SplitN(r.SaslAuthBytes, []byte("\x00"), 3)
if string(x[0]) != conf.Net.SASL.AuthIdentity {
t.Errorf("[%d]:[%s] expected %s auth identity, got %s\n", i, test.name, conf.Net.SASL.AuthIdentity, x[0])
}
if string(x[1]) != conf.Net.SASL.User {
t.Errorf("[%d]:[%s] expected %s user, got %s\n", i, test.name, conf.Net.SASL.User, x[1])
}
if string(x[2]) != conf.Net.SASL.Password {
t.Errorf("[%d]:[%s] expected %s password, got %s\n", i, test.name, conf.Net.SASL.Password, x[2])
}
}
}
}
if !errors.Is(test.mockAuthErr, ErrNoError) {
if !errors.Is(err, test.mockAuthErr) {
t.Errorf("[%d]:[%s] Expected %s auth error, got %s\n", i, test.name, test.mockAuthErr, err)
}
} else if !errors.Is(test.mockHandshakeErr, ErrNoError) {
if !errors.Is(err, test.mockHandshakeErr) {
t.Errorf("[%d]:[%s] Expected %s handshake error, got %s\n", i, test.name, test.mockHandshakeErr, err)
}
} else if test.expectClientErr && err == nil {
t.Errorf("[%d]:[%s] Expected a client error and got none\n", i, test.name)
} else if !test.expectClientErr && err != nil {
t.Errorf("[%d]:[%s] Unexpected error, got %s\n", i, test.name, err)
}
mockBroker.Close()
})
}
}
// TestSASLReadTimeout ensures that the broker connection won't block forever
// if the remote end never responds after the handshake
func TestSASLReadTimeout(t *testing.T) {
mockBroker := NewMockBroker(t, 0)
defer mockBroker.Close()
mockSASLAuthResponse := NewMockSaslAuthenticateResponse(t).
SetAuthBytes([]byte(`response_payload`))
mockBroker.SetHandlerByMap(map[string]MockResponse{
"SaslAuthenticateRequest": mockSASLAuthResponse,
})
broker := NewBroker(mockBroker.Addr())
{
broker.requestRate = metrics.NilMeter{}
broker.outgoingByteRate = metrics.NilMeter{}
broker.incomingByteRate = metrics.NilMeter{}
broker.requestSize = metrics.NilHistogram{}
broker.responseSize = metrics.NilHistogram{}
broker.responseRate = metrics.NilMeter{}
broker.requestLatency = metrics.NilHistogram{}
broker.requestsInFlight = metrics.NilCounter{}
}
conf := NewTestConfig()
{
conf.Net.ReadTimeout = time.Millisecond
conf.Net.SASL.Mechanism = SASLTypePlaintext
conf.Net.SASL.User = "token"
conf.Net.SASL.Password = "password"
conf.Net.SASL.Version = SASLHandshakeV1
}
broker.conf = conf
broker.conf.Version = V1_0_0_0
dialer := net.Dialer{}
conn, err := dialer.Dial("tcp", mockBroker.listener.Addr().String())
if err != nil {
t.Fatal(err)
}
broker.conn = conn
err = broker.authenticateViaSASL()
if err == nil {
t.Errorf("should never happen - expected read timeout")
}
}
func TestGSSAPIKerberosAuth_Authorize(t *testing.T) {
testTable := []struct {
name string
error error
mockKerberosClient bool
errorStage string
badResponse bool
badKeyChecksum bool
}{
{
name: "Kerberos authentication success",
error: nil,
mockKerberosClient: true,
},
{
name: "Kerberos login fails",
error: krberror.NewErrorf(krberror.KDCError, "KDC_Error: AS Exchange Error: "+
"kerberos error response from KDC: KRB Error: (24) KDC_ERR_PREAUTH_FAILED Pre-authenti"+
"cation information was invalid - PREAUTH_FAILED"),
mockKerberosClient: true,
errorStage: "login",
},
{
name: "Kerberos service ticket fails",
error: krberror.NewErrorf(krberror.KDCError, "KDC_Error: AS Exchange Error: "+
"kerberos error response from KDC: KRB Error: (24) KDC_ERR_PREAUTH_FAILED Pre-authenti"+
"cation information was invalid - PREAUTH_FAILED"),
mockKerberosClient: true,
errorStage: "service_ticket",
},
{
name: "Kerberos client creation fails",
error: errors.New("configuration file could not be opened: krb5.conf open krb5.conf: no such file or directory"),
},
{
name: "Bad server response, unmarshall key error",
error: errors.New("bytes shorter than header length"),
badResponse: true,
mockKerberosClient: true,
},
{
name: "Bad token checksum",
error: errors.New("checksum mismatch. Computed: 39feb88ac2459f2b77738493, Contained in token: ffffffffffffffff00000000"),
badResponse: false,
badKeyChecksum: true,
mockKerberosClient: true,
},
}
for i, test := range testTable {
test := test
t.Run(test.name, func(t *testing.T) {
mockBroker := NewMockBroker(t, 0)
// broker executes SASL requests against mockBroker
mockBroker.SetGSSAPIHandler(func(bytes []byte) []byte {
return nil
})
broker := NewBroker(mockBroker.Addr())
broker.requestRate = metrics.NilMeter{}
broker.outgoingByteRate = metrics.NilMeter{}
broker.incomingByteRate = metrics.NilMeter{}
broker.requestSize = metrics.NilHistogram{}
broker.responseSize = metrics.NilHistogram{}
broker.responseRate = metrics.NilMeter{}
broker.requestLatency = metrics.NilHistogram{}
broker.requestsInFlight = metrics.NilCounter{}
conf := NewTestConfig()
conf.Net.SASL.Mechanism = SASLTypeGSSAPI
conf.Net.SASL.GSSAPI.ServiceName = "kafka"
conf.Net.SASL.GSSAPI.KerberosConfigPath = "krb5.conf"
conf.Net.SASL.GSSAPI.Realm = "EXAMPLE.COM"
conf.Net.SASL.GSSAPI.Username = "kafka"
conf.Net.SASL.GSSAPI.Password = "kafka"
conf.Net.SASL.GSSAPI.KeyTabPath = "kafka.keytab"
conf.Net.SASL.GSSAPI.AuthType = KRB5_USER_AUTH
broker.conf = conf
broker.conf.Version = V1_0_0_0
dialer := net.Dialer{
Timeout: conf.Net.DialTimeout,
KeepAlive: conf.Net.KeepAlive,
LocalAddr: conf.Net.LocalAddr,
}
conn, err := dialer.Dial("tcp", mockBroker.listener.Addr().String())
if err != nil {
t.Fatal(err)
}
gssapiHandler := KafkaGSSAPIHandler{
client: &MockKerberosClient{},
badResponse: test.badResponse,
badKeyChecksum: test.badKeyChecksum,
}
mockBroker.SetGSSAPIHandler(gssapiHandler.MockKafkaGSSAPI)
broker.conn = conn
if test.mockKerberosClient {
broker.kerberosAuthenticator.NewKerberosClientFunc = func(config *GSSAPIConfig) (KerberosClient, error) {
return &MockKerberosClient{
mockError: test.error,
errorStage: test.errorStage,
}, nil
}
} else {
broker.kerberosAuthenticator.NewKerberosClientFunc = nil
}
err = broker.authenticateViaSASL()
if err != nil && test.error != nil {
if test.error.Error() != err.Error() {
t.Errorf("[%d] Expected error:%s, got:%s.", i, test.error, err)
}
} else if (err == nil && test.error != nil) || (err != nil && test.error == nil) {
t.Errorf("[%d] Expected error:%s, got:%s.", i, test.error, err)
}
mockBroker.Close()
})
}
}
func TestBuildClientFirstMessage(t *testing.T) {
testTable := []struct {
name string
token *AccessToken
expected []byte
expectError bool
}{
{
name: "Build SASL client initial response with two extensions",
token: &AccessToken{
Token: "the-token",
Extensions: map[string]string{
"x": "1",
"y": "2",
},
},
expected: []byte("n,,\x01auth=Bearer the-token\x01x=1\x01y=2\x01\x01"),
},
{
name: "Build SASL client initial response with no extensions",
token: &AccessToken{Token: "the-token"},
expected: []byte("n,,\x01auth=Bearer the-token\x01\x01"),
},
{
name: "Build SASL client initial response using reserved extension",
token: &AccessToken{
Token: "the-token",
Extensions: map[string]string{
"auth": "auth-value",
},
},
expected: []byte(""),
expectError: true,
},
}
for i, test := range testTable {
test := test
t.Run(test.name, func(t *testing.T) {
actual, err := buildClientFirstMessage(test.token)
if !reflect.DeepEqual(test.expected, actual) {
t.Errorf("Expected %s, got %s\n", test.expected, actual)
}
if test.expectError && err == nil {
t.Errorf("[%d]:[%s] Expected an error but did not get one", i, test.name)
}
if !test.expectError && err != nil {
t.Errorf("[%d]:[%s] Expected no error but got %s\n", i, test.name, err)
}
})
}
}
// TestFetchOffsetAddsMissingEntries checks that FetchOffset returns an
// initial offset entry for requested partitions that are absent in the
// OffsetFetchResponse, as is done in Azure's Kafka implementation (Event Hubs)
// to indicate that a partition has not yet committed an offset.
func TestFetchOffsetAddsMissingEntries(t *testing.T) {
const topic = "test"
mockResponse := []byte{
0x00, 0x00, 0x00, 0x01, // one topic
0x00, 0x04, 0x74, 0x65, 0x73, 0x74, // "test"
0x00, 0x00, 0x00, 0x01, // one partition response
0x00, 0x00, 0x00, 0x01, // partition 1
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a, // offset 10
0x00, 0x00, 0x00, 0x00, // empty metadata and error code
}
mb := NewMockBroker(t, 0)
mb.Returns(&mockEncoder{mockResponse})
broker := NewBroker(mb.Addr())
conf := NewConfig()
conf.Version = V0_10_0_0
err := broker.Open(conf)
if err != nil {
t.Fatal(err)
}
// Create a fetch request for 3 partitions. The response from FetchOffset
// should have entries for all 3, even though the raw data from the broker
// only includes partition 1.
request := OffsetFetchRequest{}
request.AddPartition("test", 0)
request.AddPartition("test", 1)
request.AddPartition("test", 2)
response, err := broker.FetchOffset(&request)
if err != nil {
t.Fatal(err)
}
if response.Blocks[topic] == nil {
t.Fatalf("Expected response entry for topic '%s'", topic)
}
// We expect the returned offset (10) for partition 1, and the initial
// offset (-1) for the other partitions which were not included in the
// response.
expected := []struct {
partition int32
offset int64
}{
{partition: 0, offset: -1},
{partition: 1, offset: 10},
{partition: 2, offset: -1},
}
for _, e := range expected {
partitionResponse := response.Blocks[topic][e.partition]
if partitionResponse == nil {
t.Errorf("Expected nonempty result for topic '%v' partition %d",
topic, e.partition)
continue
}
if partitionResponse.Offset != e.offset {
t.Errorf("Topic '%s' partition %d: expected offset %d, got %d",
topic, e.partition, e.offset, partitionResponse.Offset)
}
}
}
// We're not testing encoding/decoding here, so most of the requests/responses will be empty for simplicity's sake
var brokerTestTable = []struct {
version KafkaVersion
name string
response []byte
runner func(*testing.T, *Broker)
}{
{
V0_10_0_0,
"MetadataRequest",
[]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
func(t *testing.T, broker *Broker) {
request := MetadataRequest{}
response, err := broker.GetMetadata(&request)
if err != nil {
t.Error(err)
}
if response == nil {
t.Error("Metadata request got no response!")
}
},
},
{
V0_10_0_0,
"ConsumerMetadataRequest",
[]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 't', 0x00, 0x00, 0x00, 0x00},
func(t *testing.T, broker *Broker) {
request := ConsumerMetadataRequest{}
response, err := broker.GetConsumerMetadata(&request)
if err != nil {
t.Error(err)
}
if response == nil {
t.Error("Consumer Metadata request got no response!")
}
},
},
{
V0_10_0_0,
"ProduceRequest (NoResponse)",
[]byte{},
func(t *testing.T, broker *Broker) {
request := ProduceRequest{}
request.RequiredAcks = NoResponse
response, err := broker.Produce(&request)
if err != nil {
t.Error(err)
}
if response != nil {
t.Error("Produce request with NoResponse got a response!")
}
},
},
{
V0_10_0_0,
"ProduceRequest (NoResponse) using AsyncProduce",
[]byte{},
func(t *testing.T, broker *Broker) {
request := ProduceRequest{}
request.RequiredAcks = NoResponse
err := broker.AsyncProduce(&request, nil)
if err != nil {
t.Error(err)
}
},
},
{
V0_10_0_0,
"ProduceRequest (WaitForLocal)",
[]byte{0x00, 0x00, 0x00, 0x00},
func(t *testing.T, broker *Broker) {
request := ProduceRequest{}
request.RequiredAcks = WaitForLocal
response, err := broker.Produce(&request)
if err != nil {
t.Error(err)
}
if response == nil {
t.Error("Produce request without NoResponse got no response!")
}
},
},
{
V0_10_0_0,
"ProduceRequest (WaitForLocal) using AsyncProduce",
[]byte{0x00, 0x00, 0x00, 0x00},
func(t *testing.T, broker *Broker) {
request := ProduceRequest{}
request.RequiredAcks = WaitForLocal
produceResPromise := newProduceResponsePromise()
err := broker.AsyncProduce(&request, produceResPromise.callback)
if err != nil {
t.Error(err)
}
response, err := produceResPromise.Get()
if err != nil {
t.Error(err)
}
if response == nil {
t.Error("Produce request without NoResponse got no response!")
}
},