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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| package client | ||
|
|
||
| import ( | ||
| "bytes" | ||
|
|
||
| "github.com/cockroachdb/errors" | ||
| "google.golang.org/protobuf/proto" | ||
|
|
||
| "github.com/milvus-io/milvus/pkg/mq/common" | ||
| "github.com/milvus-io/milvus/pkg/mq/mqimpl/rocksmq/server" | ||
| "github.com/milvus-io/milvus/pkg/streaming/proto/messagespb" | ||
| ) | ||
|
|
||
| var ( | ||
| // magicPrefix is used to identify the rocksmq legacy message and new message for streaming service. | ||
| // Make a low probability of collision with the legacy proto message. | ||
| magicPrefix = append([]byte{0xFF, 0xFE, 0xFD, 0xFC}, []byte("STREAM")...) | ||
| errNotStreamingServiceMessage = errors.New("not a streaming service message") | ||
| ) | ||
|
|
||
| // marshalStreamingMessage marshals a streaming message to bytes. | ||
| func marshalStreamingMessage(message *common.ProducerMessage) ([]byte, error) { | ||
| rmqMessage := &messagespb.RMQMessageLayout{ | ||
| Payload: message.Payload, | ||
| Properties: message.Properties, | ||
| } | ||
| payload, err := proto.Marshal(rmqMessage) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| finalPayload := make([]byte, len(payload)+len(magicPrefix)) | ||
| copy(finalPayload, magicPrefix) | ||
| copy(finalPayload[len(magicPrefix):], payload) | ||
| return finalPayload, nil | ||
| } | ||
|
|
||
| // unmarshalStreamingMessage unmarshals a streaming message from bytes. | ||
| func unmarshalStreamingMessage(topic string, msg server.ConsumerMessage) (*RmqMessage, error) { | ||
| if !bytes.HasPrefix(msg.Payload, magicPrefix) { | ||
| return nil, errNotStreamingServiceMessage | ||
| } | ||
|
|
||
| var rmqMessage messagespb.RMQMessageLayout | ||
| if err := proto.Unmarshal(msg.Payload[len(magicPrefix):], &rmqMessage); err != nil { | ||
| return nil, err | ||
| } | ||
| return &RmqMessage{ | ||
| msgID: msg.MsgID, | ||
| payload: rmqMessage.Payload, | ||
| properties: rmqMessage.Properties, | ||
| topic: topic, | ||
| }, nil | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| package client | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
||
| "github.com/stretchr/testify/assert" | ||
|
|
||
| "github.com/milvus-io/milvus/pkg/mq/common" | ||
| "github.com/milvus-io/milvus/pkg/mq/mqimpl/rocksmq/server" | ||
| ) | ||
|
|
||
| func TestStreaming(t *testing.T) { | ||
| payload, err := marshalStreamingMessage(&common.ProducerMessage{ | ||
| Payload: []byte("payload"), | ||
| Properties: map[string]string{ | ||
| "key": "value", | ||
| }, | ||
| }) | ||
| assert.NoError(t, err) | ||
| assert.NotNil(t, payload) | ||
|
|
||
| msg, err := unmarshalStreamingMessage("topic", server.ConsumerMessage{ | ||
| MsgID: 1, | ||
| Payload: payload, | ||
| }) | ||
| assert.NoError(t, err) | ||
| assert.Equal(t, string(msg.Payload()), "payload") | ||
| assert.Equal(t, msg.Properties()["key"], "value") | ||
| msg, err = unmarshalStreamingMessage("topic", server.ConsumerMessage{ | ||
| MsgID: 1, | ||
| Payload: payload[1:], | ||
| }) | ||
| assert.Error(t, err) | ||
| assert.ErrorIs(t, err, errNotStreamingServiceMessage) | ||
| assert.Nil(t, msg) | ||
| } |