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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,39 +1,132 @@ | ||
| package rpc | ||
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| const ( | ||
| DISCONNECT uint8 = iota | ||
| CONNECT | ||
| CONNECT_ACK | ||
| HEARTBEAT | ||
| REQUEST | ||
| REQUEST_END | ||
| RESPONSE | ||
| RESPONSE_END | ||
| STREAM | ||
| STREAM_END | ||
| PUBLISH | ||
| PUBLISH_END | ||
| PUBLISH_ACK | ||
| SUBSCRIBE | ||
| SUBSCRIBE_ACK | ||
| UNSUBSCRIBE | ||
| ) | ||
|
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| const ( | ||
| BINARY uint8 = iota | ||
| JSON | ||
| XML | ||
| YAML | ||
| CSV | ||
| MSGPACK | ||
| PROTOBUF | ||
| ) | ||
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| type Pack struct { | ||
| Type uint8 | ||
| Encoding uint8 | ||
| Id uint16 | ||
| Length uint16 | ||
| } | ||
| package rpc | ||
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| import ( | ||
| "encoding/binary" | ||
| "encoding/xml" | ||
| "errors" | ||
| "github.com/gocarina/gocsv" | ||
| "github.com/goccy/go-json" | ||
| "github.com/shamaton/msgpack/v2" | ||
| "gopkg.in/yaml.v3" | ||
| ) | ||
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| var ErrEncoding = errors.New("编码不支持") | ||
| var ErrNotEnough = errors.New("长度不足") | ||
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| type Encoder func(any) ([]byte, error) | ||
| type Decoder func([]byte, any) error | ||
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| const MAGIC = "rgc" | ||
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| const ( | ||
| DISCONNECT uint8 = iota | ||
| CONNECT | ||
| CONNECT_ACK | ||
| HEARTBEAT | ||
| REQUEST | ||
| REQUEST_END | ||
| RESPONSE | ||
| RESPONSE_END | ||
| STREAM | ||
| STREAM_END | ||
| PUBLISH | ||
| PUBLISH_END | ||
| PUBLISH_ACK | ||
| SUBSCRIBE | ||
| SUBSCRIBE_ACK | ||
| UNSUBSCRIBE | ||
| ) | ||
|
|
||
| const ( | ||
| BINARY uint8 = iota | ||
| JSON | ||
| XML | ||
| YAML | ||
| CSV | ||
| MSGPACK | ||
| PROTOBUF | ||
| ) | ||
|
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| var encoders = map[uint8]Encoder{ | ||
| JSON: json.Marshal, | ||
| XML: xml.Marshal, | ||
| YAML: yaml.Marshal, | ||
| CSV: gocsv.MarshalBytes, | ||
| MSGPACK: msgpack.Marshal, | ||
| } | ||
|
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| var decoders = map[uint8]Decoder{ | ||
| JSON: json.Unmarshal, | ||
| XML: xml.Unmarshal, | ||
| YAML: yaml.Unmarshal, | ||
| CSV: gocsv.UnmarshalBytes, | ||
| MSGPACK: msgpack.Unmarshal, | ||
| } | ||
|
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| func RegisterEncoding(typ uint8, encoder Encoder, decoder Decoder) { | ||
| encoders[typ] = encoder | ||
| decoders[typ] = decoder | ||
| } | ||
|
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| type Pack struct { | ||
| Type uint8 | ||
| Encoding uint8 | ||
| Id uint16 | ||
| Length uint16 | ||
| Data []byte | ||
| Content any | ||
| } | ||
|
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| func (p *Pack) Encode() (buf []byte, err error) { | ||
| if p.Content != nil && p.Encoding > 0 { | ||
| if encoder, ok := encoders[p.Encoding]; ok { | ||
| p.Data, err = encoder(p.Content) | ||
| } else { | ||
| err = ErrEncoding | ||
| } | ||
|
|
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| if err != nil { | ||
| return | ||
| } | ||
| } | ||
|
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| //构建包 | ||
| p.Length = uint16(len(p.Data)) | ||
| buf = make([]byte, 8+len(p.Data)) | ||
| copy(buf, MAGIC) | ||
| buf[3] = p.Type<<4 + p.Encoding&0xF0 | ||
| binary.BigEndian.PutUint16(buf[4:], p.Id) | ||
| binary.BigEndian.PutUint16(buf[6:], p.Length) | ||
| if p.Data != nil { | ||
| copy(buf[8:], p.Data) //内存复制了 | ||
| } | ||
| return | ||
| } | ||
|
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| func (p *Pack) Decode(buf []byte) (err error) { | ||
| p.Id = binary.BigEndian.Uint16(buf[4:]) | ||
| p.Length = binary.BigEndian.Uint16(buf[6:]) | ||
| p.Type = buf[3] >> 4 | ||
| p.Encoding = buf[3] & 0xF0 | ||
|
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| if p.Length > 0 { | ||
| if len(buf) < 8+int(p.Length) { | ||
| return ErrNotEnough | ||
| } | ||
| p.Data = buf[8 : 8+p.Length] | ||
|
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| if p.Encoding > 0 { | ||
| if decoder, ok := decoders[p.Encoding]; ok { | ||
| err = decoder(p.Data, p.Content) | ||
| } else { | ||
| err = ErrEncoding | ||
| } | ||
| } else { | ||
| p.Content = p.Data | ||
| } | ||
| if err != nil { | ||
| return | ||
| } | ||
| } | ||
| return | ||
| } |