start refactoring

models/proto/udp/udp.go

@@ -0,0 +1,72 @@
+// Copyright 2016 fatedier, fatedier@gmail.com
+//
+// 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 udp
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"net"
+)
+
+type UdpPacket struct {
+	Content []byte       `json:"-"`
+	Src     *net.UDPAddr `json:"-"`
+	Dst     *net.UDPAddr `json:"-"`
+
+	EncodeContent string `json:"content"`
+	SrcStr        string `json:"src"`
+	DstStr        string `json:"dst"`
+}
+
+func NewUdpPacket(content []byte, src, dst *net.UDPAddr) *UdpPacket {
+	up := &UdpPacket{
+		Src:           src,
+		Dst:           dst,
+		EncodeContent: base64.StdEncoding.EncodeToString(content),
+		SrcStr:        src.String(),
+		DstStr:        dst.String(),
+	}
+	return up
+}
+
+// parse one udp packet struct to bytes
+func (up *UdpPacket) Pack() []byte {
+	b, _ := json.Marshal(up)
+	return b
+}
+
+// parse from bytes to UdpPacket struct
+func (up *UdpPacket) UnPack(packet []byte) error {
+	err := json.Unmarshal(packet, &up)
+	if err != nil {
+		return err
+	}
+
+	up.Content, err = base64.StdEncoding.DecodeString(up.EncodeContent)
+	if err != nil {
+		return err
+	}
+
+	up.Src, err = net.ResolveUDPAddr("udp", up.SrcStr)
+	if err != nil {
+		return err
+	}
+
+	up.Dst, err = net.ResolveUDPAddr("udp", up.DstStr)
+	if err != nil {
+		return err
+	}
+	return nil
+}

models/proto/udp/udp_test.go

@@ -0,0 +1,50 @@
+// Copyright 2016 fatedier, fatedier@gmail.com
+//
+// 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 udp
+
+import (
+	"net"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+var (
+	content string = "udp packet test"
+	src     string = "1.1.1.1:1000"
+	dst     string = "2.2.2.2:2000"
+
+	udpMsg *UdpPacket
+)
+
+func init() {
+	srcAddr, _ := net.ResolveUDPAddr("udp", src)
+	dstAddr, _ := net.ResolveUDPAddr("udp", dst)
+	udpMsg = NewUdpPacket([]byte(content), srcAddr, dstAddr)
+}
+
+func TestPack(t *testing.T) {
+	assert := assert.New(t)
+	msg := udpMsg.Pack()
+	assert.Equal(string(msg), `{"content":"dWRwIHBhY2tldCB0ZXN0","src":"1.1.1.1:1000","dst":"2.2.2.2:2000"}`)
+}
+
+func TestUnpack(t *testing.T) {
+	assert := assert.New(t)
+	udpMsg.UnPack([]byte(`{"content":"dWRwIHBhY2tldCB0ZXN0","src":"1.1.1.1:1000","dst":"2.2.2.2:2000"}`))
+	assert.Equal(content, string(udpMsg.Content))
+	assert.Equal(src, udpMsg.Src.String())
+	assert.Equal(dst, udpMsg.Dst.String())
+}