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messages_test.go
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messages_test.go
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package proto
import (
"bytes"
"reflect"
"testing"
"time"
)
func testRequestSerialization(t *testing.T, r Request) {
var buf bytes.Buffer
if n, err := r.WriteTo(&buf); err != nil {
t.Fatalf("could not write request to buffer: %s", err)
} else if n != int64(buf.Len()) {
t.Fatalf("writer returned invalid number of bytes written %d != %d", n, buf.Len())
}
b, err := r.Bytes()
if err != nil {
t.Fatalf("could not convert request to bytes: %s", err)
}
if !bytes.Equal(b, buf.Bytes()) {
t.Fatal("Bytes() and WriteTo() serialized request is of different form")
}
}
func TestMetadataRequest(t *testing.T) {
req1 := &MetadataReq{
RequestHeader: RequestHeader{correlationID: 123, ClientID: "testcli", version: KafkaV0},
Topics: nil,
}
testRequestSerialization(t, req1)
b, _ := req1.Bytes()
expected := []byte{0x0, 0x0, 0x0, 0x15, 0x0, 0x3, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7b, 0x0, 0x7, 0x74, 0x65, 0x73, 0x74, 0x63, 0x6c, 0x69, 0x0, 0x0, 0x0, 0x0}
if !bytes.Equal(b, expected) {
t.Fatalf("expected different bytes representation: %v", b)
}
req2 := &MetadataReq{
RequestHeader: RequestHeader{correlationID: 123, ClientID: "testcli"},
Topics: []string{"foo", "bar"},
}
testRequestSerialization(t, req2)
b, _ = req2.Bytes()
expected = []byte{0x0, 0x0, 0x0, 0x1f, 0x0, 0x3, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7b, 0x0, 0x7, 0x74, 0x65, 0x73, 0x74, 0x63, 0x6c, 0x69, 0x0, 0x0, 0x0, 0x2, 0x0, 0x3, 0x66, 0x6f, 0x6f, 0x0, 0x3, 0x62, 0x61, 0x72}
if !bytes.Equal(b, expected) {
t.Fatalf("expected different bytes representation: %v", b)
}
r, _ := ReadMetadataReq(bytes.NewBuffer(expected))
if !reflect.DeepEqual(r, req2) {
t.Fatalf("malformed request: %#v", r)
}
req3 := &MetadataReq{
RequestHeader: RequestHeader{correlationID: 123, ClientID: "testcli", version: KafkaV4},
Topics: nil,
AllowAutoTopicCreation: true,
}
testRequestSerialization(t, req3)
b3, _ := req3.Bytes()
expected3 := []byte{0x0, 0x0, 0x0, 0x16, 0x0, 0x3, 0x0, 0x4, 0x0, 0x0, 0x0, 0x7b, 0x0, 0x7, 0x74, 0x65, 0x73, 0x74, 0x63, 0x6c, 0x69, 0xFF, 0xFF, 0xFF, 0xFF, 0x1}
if !bytes.Equal(b3, expected3) {
t.Fatalf("expected different bytes representation: %v ( expected %v)", b3, expected3)
}
}
func TestMetadataResponse(t *testing.T) {
msgb := []byte{0x0, 0x0, 0x1, 0xc7, 0x0, 0x0, 0x0, 0x7b, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0xc0, 0x10, 0x0, 0xb, 0x31, 0x37, 0x32, 0x2e, 0x31, 0x37, 0x2e, 0x34, 0x32, 0x2e, 0x31, 0x0, 0x0, 0xc0, 0x10, 0x0, 0x0, 0xc0, 0x12, 0x0, 0xb, 0x31, 0x37, 0x32, 0x2e, 0x31, 0x37, 0x2e, 0x34, 0x32, 0x2e, 0x31, 0x0, 0x0, 0xc0, 0x12, 0x0, 0x0, 0xc0, 0x11, 0x0, 0xb, 0x31, 0x37, 0x32, 0x2e, 0x31, 0x37, 0x2e, 0x34, 0x32, 0x2e, 0x31, 0x0, 0x0, 0xc0, 0x11, 0x0, 0x0, 0xc0, 0x13, 0x0, 0xb, 0x31, 0x37, 0x32, 0x2e, 0x31, 0x37, 0x2e, 0x34, 0x32, 0x2e, 0x31, 0x0, 0x0, 0xc0, 0x13, 0x0, 0x0, 0x0, 0x2, 0x0, 0x0, 0x0, 0x3, 0x66, 0x6f, 0x6f, 0x0, 0x0, 0x0, 0x6, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, 0x0, 0xc0, 0x13, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xc0, 0x13, 0x0, 0x0, 0xc0, 0x10, 0x0, 0x0, 0xc0, 0x11, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xc0, 0x13, 0x0, 0x0, 0xc0, 0x10, 0x0, 0x0, 0xc0, 0x11, 0x0, 0x0, 0x0, 0x0, 0x0, 0x5, 0x0, 0x0, 0xc0, 0x12, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xc0, 0x12, 0x0, 0x0, 0xc0, 0x10, 0x0, 0x0, 0xc0, 0x11, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xc0, 0x12, 0x0, 0x0, 0xc0, 0x10, 0x0, 0x0, 0xc0, 0x11, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0xc0, 0x11, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xc0, 0x11, 0x0, 0x0, 0xc0, 0x13, 0x0, 0x0, 0xc0, 0x10, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xc0, 0x11, 0x0, 0x0, 0xc0, 0x13, 0x0, 0x0, 0xc0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0xc0, 0x12, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xc0, 0x12, 0x0, 0x0, 0xc0, 0x13, 0x0, 0x0, 0xc0, 0x10, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xc0, 0x12, 0x0, 0x0, 0xc0, 0x13, 0x0, 0x0, 0xc0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xc0, 0x10, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xc0, 0x10, 0x0, 0x0, 0xc0, 0x11, 0x0, 0x0, 0xc0, 0x12, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xc0, 0x10, 0x0, 0x0, 0xc0, 0x11, 0x0, 0x0, 0xc0, 0x12, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc0, 0x11, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xc0, 0x11, 0x0, 0x0, 0xc0, 0x12, 0x0, 0x0, 0xc0, 0x13, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xc0, 0x11, 0x0, 0x0, 0xc0, 0x12, 0x0, 0x0, 0xc0, 0x13, 0x0, 0x0, 0x0, 0x4, 0x74, 0x65, 0x73, 0x74, 0x0, 0x0, 0x0, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0xc0, 0x11, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xc0, 0x11, 0x0, 0x0, 0xc0, 0x12, 0x0, 0x0, 0xc0, 0x13, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xc0, 0x11, 0x0, 0x0, 0xc0, 0x12, 0x0, 0x0, 0xc0, 0x13, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc0, 0x10, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xc0, 0x10, 0x0, 0x0, 0xc0, 0x11, 0x0, 0x0, 0xc0, 0x12, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0xc0, 0x10, 0x0, 0x0, 0xc0, 0x11, 0x0, 0x0, 0xc0, 0x12}
resp, err := ReadVersionedMetadataResp(bytes.NewBuffer(msgb), 0)
if err != nil {
t.Fatalf("could not read metadata response: %s", err)
}
expected := &MetadataResp{
CorrelationID: 123,
Brokers: []MetadataRespBroker{
{NodeID: 49168, Host: "172.17.42.1", Port: 49168},
{NodeID: 49170, Host: "172.17.42.1", Port: 49170},
{NodeID: 49169, Host: "172.17.42.1", Port: 49169},
{NodeID: 49171, Host: "172.17.42.1", Port: 49171},
},
Topics: []MetadataRespTopic{
{
Name: "foo",
Err: error(nil),
Partitions: []MetadataRespPartition{
{Err: error(nil), ID: 2, Leader: 49171, Replicas: []int32{49171, 49168, 49169}, Isrs: []int32{49171, 49168, 49169}},
{Err: error(nil), ID: 5, Leader: 49170, Replicas: []int32{49170, 49168, 49169}, Isrs: []int32{49170, 49168, 49169}},
{Err: error(nil), ID: 4, Leader: 49169, Replicas: []int32{49169, 49171, 49168}, Isrs: []int32{49169, 49171, 49168}},
{Err: error(nil), ID: 1, Leader: 49170, Replicas: []int32{49170, 49171, 49168}, Isrs: []int32{49170, 49171, 49168}},
{Err: error(nil), ID: 3, Leader: 49168, Replicas: []int32{49168, 49169, 49170}, Isrs: []int32{49168, 49169, 49170}},
{Err: error(nil), ID: 0, Leader: 49169, Replicas: []int32{49169, 49170, 49171}, Isrs: []int32{49169, 49170, 49171}},
},
},
{
Name: "test",
Err: error(nil),
Partitions: []MetadataRespPartition{
{Err: error(nil), ID: 1, Leader: 49169, Replicas: []int32{49169, 49170, 49171}, Isrs: []int32{49169, 49170, 49171}},
{Err: error(nil), ID: 0, Leader: 49168, Replicas: []int32{49168, 49169, 49170}, Isrs: []int32{49168, 49169, 49170}},
},
},
},
}
if !reflect.DeepEqual(resp, expected) {
t.Fatalf("expected different message: %#v", resp)
}
if b, err := resp.Bytes(); err != nil {
t.Fatalf("cannot serialize response: %s", err)
} else {
if !bytes.Equal(b, msgb) {
t.Fatalf("serialized representation different from expected: %#v", b)
}
}
}
func TestAPIVersionsResponse(t *testing.T) {
respOrig := &APIVersionsResp{
CorrelationID: 1,
APIVersions: []SupportedVersion{
SupportedVersion{
APIKey: 1,
MinVersion: 0,
MaxVersion: 2,
},
},
}
b, err := respOrig.Bytes()
if err != nil {
t.Fatal(err)
}
resp, err := ReadVersionedAPIVersionsResp(bytes.NewBuffer(b), respOrig.Version)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(respOrig, resp) {
t.Errorf("Should be equal %+v %+v", respOrig, resp)
}
}
func TestMetadataResponseVersions(t *testing.T) {
expectedV1 := MetadataResp{
Version: 1,
CorrelationID: 123,
ControllerID: 5,
Brokers: []MetadataRespBroker{
{NodeID: 49168, Host: "172.17.42.1", Port: 49168, Rack: "rack1"},
{NodeID: 49170, Host: "172.17.42.1", Port: 49170, Rack: "rack1"},
{NodeID: 49169, Host: "172.17.42.1", Port: 49169, Rack: "rack1"},
{NodeID: 49171, Host: "172.17.42.1", Port: 49171, Rack: "rack1"},
},
Topics: []MetadataRespTopic{
{
Name: "foo",
Err: error(nil),
Partitions: []MetadataRespPartition{
{Err: error(nil), ID: 2, Leader: 49171, Replicas: []int32{49171, 49168, 49169}, Isrs: []int32{49171, 49168, 49169}},
{Err: error(nil), ID: 5, Leader: 49170, Replicas: []int32{49170, 49168, 49169}, Isrs: []int32{49170, 49168, 49169}},
{Err: error(nil), ID: 4, Leader: 49169, Replicas: []int32{49169, 49171, 49168}, Isrs: []int32{49169, 49171, 49168}},
{Err: error(nil), ID: 1, Leader: 49170, Replicas: []int32{49170, 49171, 49168}, Isrs: []int32{49170, 49171, 49168}},
{Err: error(nil), ID: 3, Leader: 49168, Replicas: []int32{49168, 49169, 49170}, Isrs: []int32{49168, 49169, 49170}},
{Err: error(nil), ID: 0, Leader: 49169, Replicas: []int32{49169, 49170, 49171}, Isrs: []int32{49169, 49170, 49171}},
},
IsInternal: true,
},
{
Name: "test",
Err: error(nil),
Partitions: []MetadataRespPartition{
{Err: error(nil), ID: 1, Leader: 49169, Replicas: []int32{49169, 49170, 49171}, Isrs: []int32{49169, 49170, 49171}},
{Err: error(nil), ID: 0, Leader: 49168, Replicas: []int32{49168, 49169, 49170}, Isrs: []int32{49168, 49169, 49170}},
},
},
},
}
b, err := expectedV1.Bytes()
if err != nil {
t.Fatal(err)
}
resp, err := ReadVersionedMetadataResp(bytes.NewBuffer(b), expectedV1.Version)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(&expectedV1, resp) {
t.Fatalf("Different response expectedV1 = %+v, got = %+v", expectedV1, resp)
}
expectedV2 := expectedV1
expectedV2.Version = 2
expectedV2.ClusterID = "cluster id"
b, err = expectedV2.Bytes()
if err != nil {
t.Fatal(err)
}
resp2, err := ReadVersionedMetadataResp(bytes.NewBuffer(b), expectedV2.Version)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(&expectedV2, resp2) {
t.Fatalf("Different response expectedV2 = %+v, got = %+v", expectedV2, resp2)
}
expectedV3 := expectedV2
expectedV3.Version = 3
expectedV3.ThrottleTime = time.Second
b, err = expectedV3.Bytes()
if err != nil {
t.Fatal(err)
}
resp3, err := ReadVersionedMetadataResp(bytes.NewBuffer(b), expectedV3.Version)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(&expectedV3, resp3) {
t.Fatalf("Different response expectedV3 = %+v, got = %+v", expectedV3, resp3)
}
}
func TestProduceResponse(t *testing.T) {
msgb1 := []byte{0x0, 0x0, 0x0, 0x22, 0x0, 0x0, 0x0, 0xf1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x6, 0x66, 0x72, 0x75, 0x69, 0x74, 0x73, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x5d, 0x0, 0x3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}
resp1, err := ReadVersionedProduceResp(bytes.NewBuffer(msgb1), KafkaV0)
if err != nil {
t.Fatalf("could not read metadata response: %s", err)
}
expected1 := &ProduceResp{
CorrelationID: 241,
Topics: []ProduceRespTopic{
{
Name: "fruits",
Partitions: []ProduceRespPartition{
{
ID: 93,
Err: ErrUnknownTopicOrPartition,
Offset: -1,
},
},
},
},
}
if !reflect.DeepEqual(resp1, expected1) {
t.Fatalf("expected different message: %#v", resp1)
}
if b, err := resp1.Bytes(); err != nil {
t.Fatalf("cannot serialize response: %s", err)
} else {
if !bytes.Equal(b, msgb1) {
t.Fatalf("serialized representation different from expected: %#v", b)
}
}
msgb2 := []byte{0x0, 0x0, 0x0, 0x1f, 0x0, 0x0, 0x0, 0xf1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x3, 0x66, 0x6f, 0x6f, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1}
resp2, err := ReadVersionedProduceResp(bytes.NewBuffer(msgb2), KafkaV0)
if err != nil {
t.Fatalf("could not read metadata response: %s", err)
}
expected2 := &ProduceResp{
CorrelationID: 241,
Topics: []ProduceRespTopic{
{
Name: "foo",
Partitions: []ProduceRespPartition{
{
ID: 0,
Err: error(nil),
Offset: 1,
},
},
},
},
}
if !reflect.DeepEqual(resp2, expected2) {
t.Fatalf("expected different message: %#v", resp2)
}
if b, err := resp2.Bytes(); err != nil {
t.Fatalf("cannot serialize response: %s", err)
} else {
if !bytes.Equal(b, msgb2) {
t.Fatalf("serialized representation different from expected: %#v", b)
}
}
}
func TestProduceResponseWithVersions(t *testing.T) {
produceRespV1 := ProduceResp{
Version: 1,
CorrelationID: 0,
Topics: []ProduceRespTopic{
ProduceRespTopic{
Name: "",
Partitions: []ProduceRespPartition{
ProduceRespPartition{
ID: 0,
Err: nil,
Offset: 0,
LogAppendTime: 0,
},
},
},
},
ThrottleTime: time.Second,
}
b, err := produceRespV1.Bytes()
if err != nil {
t.Fatal(err)
}
resp, err := ReadVersionedProduceResp(bytes.NewBuffer(b), produceRespV1.Version)
if err != nil {
t.Fatal(err)
}
//assert.Equal(t, produceRespV1, *resp, "Not equal")
if !reflect.DeepEqual(produceRespV1, *resp) {
t.Errorf("Not equal")
}
produceRespV2 := produceRespV1
produceRespV2.Version = KafkaV2
produceRespV2.Topics[0].Partitions[0].LogAppendTime = 5
b, err = produceRespV2.Bytes()
if err != nil {
t.Fatal(err)
}
resp, err = ReadVersionedProduceResp(bytes.NewBuffer(b), produceRespV2.Version)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(produceRespV2, *resp) {
t.Errorf("Not equal")
}
}
func TestFetchRequest(t *testing.T) {
req := &FetchReq{
RequestHeader: RequestHeader{correlationID: 241, ClientID: "test"},
ReplicaID: -1,
MaxWaitTime: time.Second * 2,
MinBytes: 12454,
Topics: []FetchReqTopic{
{
Name: "foo",
Partitions: []FetchReqPartition{
{ID: 421, FetchOffset: 529, MaxBytes: 4921},
{ID: 0, FetchOffset: 11, MaxBytes: 92},
},
},
},
}
testRequestSerialization(t, req)
b, _ := req.Bytes()
expected := []byte{0x0, 0x0, 0x0, 0x47, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0xf1, 0x0, 0x4, 0x74, 0x65, 0x73, 0x74, 0xff, 0xff, 0xff, 0xff, 0x0, 0x0, 0x7, 0xd0, 0x0, 0x0, 0x30, 0xa6, 0x0, 0x0, 0x0, 0x1, 0x0, 0x3, 0x66, 0x6f, 0x6f, 0x0, 0x0, 0x0, 0x2, 0x0, 0x0, 0x1, 0xa5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x11, 0x0, 0x0, 0x13, 0x39, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb, 0x0, 0x0, 0x0, 0x5c}
if !bytes.Equal(b, expected) {
t.Fatalf("expected different bytes representation: %#v", b)
}
r, _ := ReadFetchReq(bytes.NewBuffer(expected))
if !reflect.DeepEqual(r, req) {
t.Fatalf("malformed request: %#v", r)
}
}
func TestFetchResponse(t *testing.T) {
expected1 := &FetchResp{
CorrelationID: 241,
Topics: []FetchRespTopic{
{
Name: "foo",
Partitions: []FetchRespPartition{
{
ID: 0,
Err: error(nil),
TipOffset: 4,
Messages: []*Message{
{Offset: 2, Crc: 0xb8ba5f57, Key: []byte("foo"), Value: []byte("bar"), Topic: "foo", Partition: 0, TipOffset: 4},
{Offset: 3, Crc: 0xb8ba5f57, Key: []byte("foo"), Value: []byte("bar"), Topic: "foo", Partition: 0, TipOffset: 4},
},
},
{
ID: 1,
Err: ErrUnknownTopicOrPartition,
TipOffset: -1,
Messages: nil,
},
},
},
},
}
tests := []struct {
Bytes []byte
RoundTrip bool // whether to compare re-serialized version
Expected *FetchResp
}{
{ // CompressionNone
Bytes: []byte{0x0, 0x0, 0x0, 0x75, 0x0, 0x0, 0x0, 0xf1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x3, 0x66, 0x6f, 0x6f, 0x0, 0x0, 0x0, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x40, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, 0x0, 0x0, 0x14, 0xb8, 0xba, 0x5f, 0x57, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 0x66, 0x6f, 0x6f, 0x0, 0x0, 0x0, 0x3, 0x62, 0x61, 0x72, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0x0, 0x14, 0xb8, 0xba, 0x5f, 0x57, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 0x66, 0x6f, 0x6f, 0x0, 0x0, 0x0, 0x3, 0x62, 0x61, 0x72, 0x0, 0x0, 0x0, 0x1, 0x0, 0x3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x0, 0x0, 0x0, 0x0},
RoundTrip: true,
Expected: expected1,
},
{ // CompressionGzip
Bytes: []byte{0x0, 0x0, 0x0, 0x81, 0x0, 0x0, 0x0, 0xf1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x3, 0x66, 0x6f, 0x6f, 0x0, 0x0, 0x0, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x4c, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0x0, 0x40, 0x7, 0x3c, 0x17, 0x35, 0x0, 0x1, 0xff, 0xff, 0xff, 0xff, 0x0, 0x0, 0x0, 0x32, 0x1f, 0x8b, 0x8, 0x0, 0x0, 0x9, 0x6e, 0x88, 0x0, 0xff, 0x62, 0x80, 0x0, 0x26, 0x20, 0x16, 0xd9, 0xb1, 0x2b, 0x3e, 0x1c, 0xcc, 0x63, 0x4e, 0xcb, 0xcf, 0x7, 0x51, 0x49, 0x89, 0x45, 0x50, 0x79, 0x66, 0x5c, 0xf2, 0x80, 0x0, 0x0, 0x0, 0xff, 0xff, 0xab, 0xcc, 0x83, 0x80, 0x40, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x0, 0x0, 0x0, 0x0},
RoundTrip: false,
Expected: expected1,
},
{ // CompressionSnappy
Bytes: []byte{0x0, 0x0, 0x0, 0x75, 0x0, 0x0, 0x0, 0xf1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x3, 0x66, 0x6f, 0x6f, 0x0, 0x0, 0x0, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x40, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0x0, 0x34, 0x6, 0x8d, 0xfe, 0xe2, 0x0, 0x2, 0xff, 0xff, 0xff, 0xff, 0x0, 0x0, 0x0, 0x26, 0x40, 0x0, 0x0, 0x9, 0x1, 0x20, 0x2, 0x0, 0x0, 0x0, 0x14, 0xb8, 0xba, 0x5f, 0x57, 0x5, 0xf, 0x28, 0x3, 0x66, 0x6f, 0x6f, 0x0, 0x0, 0x0, 0x3, 0x62, 0x61, 0x72, 0x5, 0x10, 0x8, 0x0, 0x0, 0x3, 0x5e, 0x20, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x0, 0x0, 0x0, 0x0},
RoundTrip: false,
Expected: expected1,
},
{
Bytes: []byte{0x0, 0x0, 0x0, 0x48, 0x0, 0x0, 0x0, 0xf1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x4, 0x74, 0x65, 0x73, 0x74, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0x0, 0x3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x0, 0x0, 0x0, 0x0},
RoundTrip: true,
Expected: &FetchResp{
CorrelationID: 241,
Topics: []FetchRespTopic{
{
Name: "test",
Partitions: []FetchRespPartition{
{
ID: 0,
Err: ErrUnknownTopicOrPartition,
TipOffset: -1,
Messages: nil,
},
{
ID: 1,
Err: ErrUnknownTopicOrPartition,
TipOffset: -1,
Messages: nil,
},
{
ID: 8,
Err: ErrUnknownTopicOrPartition,
TipOffset: -1,
Messages: nil,
},
},
},
},
},
},
}
for _, tt := range tests {
resp, err := ReadVersionedFetchResp(bytes.NewBuffer(tt.Bytes), KafkaV0)
if err != nil {
t.Fatalf("could not read fetch response: %s", err)
}
if !reflect.DeepEqual(resp, tt.Expected) {
t.Fatalf("expected different message: %#v", resp)
}
if tt.RoundTrip {
b, err := resp.Bytes()
if err != nil {
t.Fatalf("cannot serialize response: %s", err)
}
if !bytes.Equal(b, tt.Bytes) {
t.Fatalf("serialized representation different from expected: %#v", b)
}
}
}
}
func TestOffsetFetchWithVersions(t *testing.T) {
respV0 := OffsetFetchResp{
Version: 0,
CorrelationID: 0,
ThrottleTime: 0,
Topics: []OffsetFetchRespTopic{
OffsetFetchRespTopic{
Name: "",
Partitions: []OffsetFetchRespPartition{
OffsetFetchRespPartition{
ID: 0,
Offset: 0,
Metadata: "",
Err: nil,
},
},
},
},
Err: nil,
}
b0, err := respV0.Bytes()
if err != nil {
t.Fatal(err)
}
r0, err := ReadVersionedOffsetFetchResp(bytes.NewReader(b0), respV0.Version)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(respV0, *r0) {
t.Errorf("Expected \n %#+v\n fot \n %#+v\n", respV0, *r0)
}
respV2 := respV0
respV2.Version = KafkaV2
respV2.Err = errnoToErr[-1]
b2, err := respV2.Bytes()
if err != nil {
t.Fatal(err)
}
r2, err := ReadVersionedOffsetFetchResp(bytes.NewReader(b2), respV2.Version)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(respV2, *r2) {
t.Errorf("Expected \n %#+v\n fot \n %#+v\n", respV2, *r2)
}
respV3 := respV2
respV3.Version = KafkaV3
respV3.ThrottleTime = 10 * time.Second
b3, err := respV3.Bytes()
if err != nil {
t.Fatal(err)
}
r3, err := ReadVersionedOffsetFetchResp(bytes.NewReader(b3), respV3.Version)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(respV3, *r3) {
t.Errorf("Expected \n %#+v\n fot \n %#+v\n", respV3, *r3)
}
}
func TestFetchResponseWithVersions(t *testing.T) {
// Test version 0
fetchRespV0 := FetchResp{
Version: KafkaV0,
CorrelationID: 1,
Topics: []FetchRespTopic{
FetchRespTopic{
Name: "Topic1",
Partitions: []FetchRespPartition{
FetchRespPartition{
ID: 1,
Err: nil,
TipOffset: 1,
Messages: nil,
},
},
},
},
}
b0, err := fetchRespV0.Bytes()
if err != nil {
t.Fatal(err)
}
resp0, err := ReadVersionedFetchResp(bytes.NewReader(b0), fetchRespV0.Version)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(&fetchRespV0, resp0) {
t.Fatalf("Not equal %+#v , %+#v", fetchRespV0, resp0)
}
// Test version 1
fetchRespV1 := fetchRespV0
fetchRespV1.Version = KafkaV1
fetchRespV1.ThrottleTime = time.Second
b1, err := fetchRespV1.Bytes()
if err != nil {
t.Fatal(err)
}
resp1, err := ReadVersionedFetchResp(bytes.NewBuffer(b1), fetchRespV1.Version)
if !reflect.DeepEqual(&fetchRespV1, resp1) {
t.Fatalf("Not equal %+#v , %+#v", fetchRespV1, resp1)
}
// Test version 4
fetchRespV4 := fetchRespV1
fetchRespV4.Version = KafkaV4
fetchRespV4.Topics[0].Partitions[0].LastStableOffset = 1
fetchRespV4.Topics[0].Partitions[0].AbortedTransactions = []FetchRespAbortedTransaction{
FetchRespAbortedTransaction{
ProducerID: 1,
FirstOffset: 1,
},
}
b4, err := fetchRespV4.Bytes()
if err != nil {
t.Fatal(err)
}
resp4, err := ReadVersionedFetchResp(bytes.NewBuffer(b4), fetchRespV4.Version)
if !reflect.DeepEqual(&fetchRespV4, resp4) {
t.Fatalf("Not equal %+#v , %+#v", fetchRespV4, resp4)
}
// Test version 5
fetchRespV5 := fetchRespV4
fetchRespV5.Version = KafkaV5
fetchRespV5.Topics[0].Partitions[0].LogStartOffset = 1
b5, err := fetchRespV5.Bytes()
if err != nil {
t.Fatal(err)
}
resp5, err := ReadVersionedFetchResp(bytes.NewBuffer(b5), fetchRespV5.Version)
if !reflect.DeepEqual(&fetchRespV5, resp5) {
t.Fatalf("Not equal %+#v , %+#v", fetchRespV5, resp5)
}
}
func TestFetchResponseWithRecordBatchAndGZIP(t *testing.T) {
data := []byte{
0x00, 0x00, 0x00, 0x99, // Size
0x00, 0x00, 0x00, 0x04, // CorrelationID
0x00, 0x00, 0x00, 0x00, // ThrottleTime
0x00, 0x00, 0x00, 0x01, // Number of topics
0x00, 0x06, 0x54, 0x6f, 0x70, 0x69, 0x63, 0x34, // "topic4"
0x00, 0x00, 0x00, 0x01, // Number of partition
0x00, 0x00, 0x00, 0x00, // Partition id
0x00, 0x00, // Error
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, // High watermark offset
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // Last stable offset
0xff, 0xff, 0xff, 0xff, // Numbet of aborted transactions
// Record Batch
0x00, 0x00, 0x00, 0x63, // Size
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // First offset
0x00, 0x00, 0x00, 0x57, // Length
0x00, 0x00, 0x00, 0x00, // Partition leader epoch
0x02, // Magic byte (version of message)
0x04, 0xf7, 0xab, 0xb5, // CRC
0x00, 0x01, // Attributes
0x00, 0x00, 0x00, 0x00, // Last offset delta
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // First timestamp
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // Producer ID
0xff, 0xff, // Producer epoch
0xff, 0xff, 0xff, 0xff, // First Sequence
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x01, 0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x53, 0x62, 0x60, 0x60, 0x60, 0x14, 0xcb, 0x48, 0xcd, 0xc9, 0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0x61, 0x00, 0x00, 0xd3, 0x90, 0x6c, 0x82, 0x12, 0x00, 0x00, 0x00,
}
resp, err := ReadVersionedFetchResp(bytes.NewReader(data), 4)
if err != nil {
t.Fatal(err)
}
if string(resp.Topics[0].Partitions[0].RecordBatch.Records[0].Value) != "hello world" {
t.Fatal("Wrong response")
}
}
func TestFetchResponseWithRecordBatch(t *testing.T) {
oneMessageFetchResponseV4error := []byte{
0x00, 0x00, 0x00, 0x00, // Fake size (just random number)
0x00, 0x00, 0x00, 0x05, //CorrelationID
0x00, 0x00, 0x00, 0x00, //ThrottleTime
0x00, 0x00, 0x00, 0x01, //Number of topics
0x00, 0x06, 0x54, 0x6f, 0x70, 0x69, 0x63, 0x34, // 'topic4'
0x00, 0x00, 0x00, 0x01, // number of Partition
0x00, 0x00, 0x00, 0x00, // partition id
0x00, 0x00, // Error
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, // High watermark Offset
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // Last stable offset
0xff, 0xff, 0xff, 0xff, // Number of aborted Transactions
//RecordBatch
0x00, 0x00, 0x00, 0x4f, // Size ???
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // FirstOffset
0x00, 0x00, 0x00, 0x43, // Length
0x00, 0x00, 0x00, 0x00, // PartitionLeaderEpoch
0x02, // Magic
0x34, 0xa1, 0x4e, 0x1d, // CRC
0x00, 0x00, //Attributes
0x00, 0x00, 0x00, 0x00, // LastOffsetDelte
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, //FirstTimestamp
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // ProducerId
0xff, 0xff, //ProducerEpoch
0xff, 0xff, 0xff, 0xff, // FirstSequence
//Record
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x01, 0x22, 0x00, 0x00, 0x00, 0x01, 0x16, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x00,
}
resp, err := ReadVersionedFetchResp(bytes.NewReader(oneMessageFetchResponseV4error), 4)
if err != nil {
t.Fatal(err)
}
if string(resp.Topics[0].Partitions[0].RecordBatch.Records[0].Value) != "hello world" {
t.Fatal("Wrong response")
}
}
func TestFetchResponseWithRecordBatch2(t *testing.T) {
oneMessageFetchResponseV4error := []byte{
0x00, 0x00, 0x00, 0x85, // Size
0x00, 0x00, 0x00, 0x0a, // CorrelationID
0x00, 0x00, 0x00, 0x00, // ThrottleTime
0x00, 0x00, 0x00, 0x01, // Number of topics
0x00, 0x06, 0x54, 0x6f, 0x70, 0x69, 0x63, 0x33, // "topic3"
0x00, 0x00, 0x00, 0x01, // number of partitions
0x00, 0x00, 0x00, 0x00, // Partions id
0x00, 0x00, // Error
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, // High Watermark offset
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // Last stable offset
0xff, 0xff, 0xff, 0xff, // Number of aborted transactions
// Record Batch
0x00, 0x00, 0x00, 0x4f, // Size
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // First Offset
0x00, 0x00, 0x00, 0x43, // Length
0x00, 0x00, 0x00, 0x00, // Partition Leader Epoch
0x02, // Magic byte (version)
0x34, 0xa1, 0x4e, 0x1d, // CRC
0x00, 0x00, // Attributes
0x00, 0x00, 0x00, 0x00, // Last offset delta
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // FirstTimespamp
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // Producer ID
0xff, 0xff, // Producer Epoch
0xff, 0xff, 0xff, 0xff, // first sequence
// Record
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x01, 0x22, 0x00, 0x00, 0x00, 0x01, 0x16, 0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x00,
}
resp, err := ReadVersionedFetchResp(bytes.NewReader(oneMessageFetchResponseV4error), 4)
if err != nil {
t.Fatal(err)
}
if string(resp.Topics[0].Partitions[0].RecordBatch.Records[0].Value) != "hello world" {
t.Fatal("Wrong response")
}
}
func TestFetchResponseWithRecordBatchWithMultipleRecords(t *testing.T) {
messageFetchResponseV5MultipleRecords := []byte{
0, 0, 1, 205, //size
0, 0, 0, 63, //correlation, id
0, 0, 0, 0, //throttle, time
0, 0, 0, 1, //number, of, topics
0, 4, 97, 117, 116, 104, // name of the topic ( auth)
0, 0, 0, 1, //number of partitions
0, 0, 0, 0, // partition id
0, 0, // error
0, 0, 0, 0, 0, 0, 1, 121, //, hight, water, martk
255, 255, 255, 255, 255, 255, 255, 255, //, last, stable, offset
0, 0, 0, 0, 0, 0, 0, 0, //, log, start, offset
255, 255, 255, 255, //, ,
0, 0, 1, 145, //, size, of, batch
0, 0, 0, 0, 0, 0, 1, 72, //, first, offset
0, 0, 1, 133, //, length
0, 0, 0, 2, //, partition, leader, epoch
2, //, magic,
7, 177, 219, 215, //crc,
0, 0, //, attr
0, 0, 0, 1, //, last, offset, delta
255, 255, 255, 255, 255, 255, 255, 255, //first, timestampt
255, 255, 255, 255, 255, 255, 255, 255, //, max, timestampt
255, 255, 255, 255, 255, 255, 255, 255, //, producer, id
255, 255, //, producer, epoch
255, 255, 255, 255, //, base, sequence
0, 0, 0, 2, //, number, of, records
212, 2, //size,
0, //, attribute
0, //, timestampt, delta
0, //, offset, delta
28, //, key, length
8, 128, 254, 7, 16, 131, 214, 136, 178, 165, 138, 220, 153, 2, 170, 2, 1, 1, 16, 17, 2, 32, 246, 240, 230, 136, 163, 28, //, key
67, //,
50, 175, 30, 87, 26, 228, 189, 143, 130, 80, 116, 194, 56, 70, 130, 136, 212, 23, 149, 222, 38, 125, 51, 192, 151, 107, 0, 0, 0, 10, 52, 10, 24, 102, 113, 109, 111, 106, 116, 50, 97, 113, 108, 119, 121, 101, 51, 118, 103, 116, 118, 114, 118, 105, 108, 119, 112, 24, 180, 149, 247, 197, 241, 159, 161, 188, 21,
32, 180, 249, 142, 150, 132, 160, 161, 188, 21, 42, 4, 104, 116, 116, 112, 18, 32, 246, 240, 230, 136, 163, 28, 67, 50, 175, 30, 87, 26, 228, 189, 143, 130, 80, 116, 194, 56, 70, 130, 136, 212, 23, 149, 222, 38, 125, 51, 192, 151, 26, 17, 111, 114, 103, 97, 110, 105, 122, 97, 116, 105, 111, 110, 58, 114, 101, 97, 100, 0,
204, 2, 0, 0, 2, 28, 8, 128, 254, 7, 16, 132, 214, 136, 178, 165, 138, 220, 153, 2, 162, 2, 1, 1, 16, 17, 2, 32, 246, 240, 230, 136, 163, 28, 67, 50, 175, 30, 87, 26, 228, 189, 143, 130, 80, 116, 194, 56, 70, 130, 136, 212, 23, 149, 222, 38, 125, 51, 192, 151, 103, 0, 0, 0, 10, 52, 10, 24, 119, 51, 120, 104, 55, 107, 118, 104, 104, 118, 112, 55, 104, 113, 111, 103, 119, 97, 108, 53, 55, 102, 100, 102, 24, 229, 183, 247, 197, 241, 159, 161, 188, 21, 32, 229, 155, 143, 150, 132, 160, 161, 188, 21, 42, 4, 104, 116, 116, 112, 18, 32, 246, 240, 230, 136, 163, 28, 67, 50, 175, 30, 87, 26, 228, 189, 143, 130, 80, 116, 194, 56, 70, 130, 136, 212, 23, 149, 222, 38, 125, 51, 192, 151, 26, 13, 115, 117, 112, 112, 108, 105, 101, 114, 58, 114, 101, 97, 100, 0,
}
resp, err := ReadVersionedFetchResp(bytes.NewReader(messageFetchResponseV5MultipleRecords), 5)
if err != nil {
t.Fatal(err)
}
records := resp.Topics[0].Partitions[0].RecordBatch.Records
if len(records) != 2 {
t.Fatal("Expect 2 records")
}
if records[0].Length != 170 {
t.Fatal("Wrong record length")
}
if records[1].Length != 166 {
t.Fatal("Wrong record length")
}
}
func TestConsumerMetadataWithVersions(t *testing.T) {
respV0 := ConsumerMetadataResp{
Version: 0,
CorrelationID: 1,
ThrottleTime: 0,
Err: nil,
ErrMsg: "",
CoordinatorID: 1,
CoordinatorHost: "host",
CoordinatorPort: 33333,
}
b0, err := respV0.Bytes()
if err != nil {
t.Fatal(err)
}
r0, err := ReadVersionedConsumerMetadataResp(bytes.NewReader(b0), respV0.Version)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(respV0, *r0) {
t.Errorf("Expected \n %#+v\n fot \n %#+v\n", respV0, *r0)
}
respV1 := respV0
respV1.Version = KafkaV1
respV1.ThrottleTime = 10 * time.Second
respV1.ErrMsg = "My error"
b1, err := respV1.Bytes()
if err != nil {
t.Fatal(err)
}
r1, err := ReadVersionedConsumerMetadataResp(bytes.NewReader(b1), respV1.Version)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(respV1, *r1) {
t.Errorf("Expected \n %#+v\n fot \n %#+v\n", respV1, *r1)
}
}
func TestOffsetCommitResponseWithVersions(t *testing.T) {
respV0 := OffsetCommitResp{
Version: KafkaV0,
CorrelationID: 1,
ThrottleTime: 0,
Topics: []OffsetCommitRespTopic{
OffsetCommitRespTopic{
Name: "test",
Partitions: []OffsetCommitRespPartition{
OffsetCommitRespPartition{
ID: 1,
Err: nil,
},
},
},
},
}
b0, err := respV0.Bytes()
if err != nil {
t.Fatal(err)
}
resp0, err := ReadVersionedOffsetCommitResp(bytes.NewReader(b0), respV0.Version)
if !reflect.DeepEqual(&respV0, resp0) {
t.Fatalf("Not equal %+#v , %+#v", respV0, resp0)
}
respV3 := respV0
respV3.Version = KafkaV3
respV3.ThrottleTime = 2 * time.Second
b3, err := respV3.Bytes()
if err != nil {
t.Fatal(err)
}
resp3, err := ReadVersionedOffsetCommitResp(bytes.NewReader(b3), respV3.Version)
if !reflect.DeepEqual(respV3, *resp3) {
t.Fatalf("Not equal \n%+#v , \n%+#v", respV3, *resp3)
}
}
func TestAPIVersionsResponseWithVersions(t *testing.T) {
respV0 := APIVersionsResp{
CorrelationID: 1,
APIVersions: []SupportedVersion{
SupportedVersion{
APIKey: 1,
MinVersion: 0,
MaxVersion: 2,
},
},
}
b0, err := respV0.Bytes()
if err != nil {
t.Fatal(err)
}
resp0, err := ReadVersionedAPIVersionsResp(bytes.NewReader(b0), respV0.Version)
if !reflect.DeepEqual(respV0, *resp0) {
t.Fatalf("Not equal \n %+#v , \n %+#v", respV0, *resp0)
}
respV1 := respV0
respV1.Version = KafkaV1
respV1.ThrottleTime = 2 * time.Second
b1, err := respV1.Bytes()
if err != nil {
t.Fatal(err)
}
resp1, err := ReadVersionedAPIVersionsResp(bytes.NewReader(b1), respV1.Version)
if !reflect.DeepEqual(respV1, *resp1) {
t.Fatalf("Not equal \n%+#v , \n%+#v", respV1, *resp1)
}
}
func TestSerializeEmptyMessageSet(t *testing.T) {
var buf bytes.Buffer
messages := []*Message{}
n, err := writeMessageSet(&buf, messages, CompressionNone)
if err != nil {
t.Fatalf("cannot serialize messages: %s", err)
}
if n != 0 {
t.Fatalf("got n=%d result from writeMessageSet; want 0", n)
}
if l := len(buf.Bytes()); l != 0 {
t.Fatalf("got len=%d for empty message set; should be 0", l)
}
}
func TestReadIncompleteMessage(t *testing.T) {
var buf bytes.Buffer
_, err := writeMessageSet(&buf, []*Message{
{Value: []byte("111111111111111")},
{Value: []byte("222222222222222")},
{Value: []byte("333333333333333")},
}, CompressionNone)
if err != nil {
t.Fatalf("cannot serialize messages: %s", err)
}
b := buf.Bytes()
// cut off the last bytes as kafka can do
b = b[:len(b)-4]
messages, err := readMessageSet(bytes.NewBuffer(b), int32(len(b)))
if err != nil {
t.Fatalf("cannot deserialize messages: %s", err)
}
if len(messages) != 2 {
t.Fatalf("expected 2 messages, got %d", len(messages))
}
if messages[0].Value[0] != '1' || messages[1].Value[0] != '2' {
t.Fatal("expected different messages content")
}
}
func TestReadEmptyMessage(t *testing.T) {
var buf bytes.Buffer
enc := NewEncoder(&buf)
message := Message{}
enc.EncodeInt64(message.Offset)
enc.EncodeInt32(0)
if err := enc.Err(); err != nil {
t.Fatalf("encoding error: %s", err)