forked from linkedin/goavro
-
Notifications
You must be signed in to change notification settings - Fork 0
/
server.go
110 lines (101 loc) · 2.89 KB
/
server.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
// Copyright 2015 LinkedIn Corp. 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.Copyright [201X] LinkedIn Corp. 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.
package main
import (
"github.com/scalingdata/goavro"
"log"
"net"
)
const recordSchema = `
{
"type": "record",
"name": "comments",
"doc:": "A basic schema for storing blog comments",
"namespace": "com.example",
"fields": [
{
"doc": "Name of user",
"type": "string",
"name": "username"
},
{
"doc": "The content of the user's message",
"type": "string",
"name": "comment"
},
{
"doc": "Unix epoch time in milliseconds",
"type": "long",
"name": "timestamp"
}
]
}
`
var (
codec goavro.Codec
)
func init() {
var err error
// If you want speed, create the codec one time for each
// schema and reuse it to create multiple Writer instances.
codec, err = goavro.NewCodec(recordSchema)
if err != nil {
log.Fatal(err)
}
}
func main() {
ln, err := net.Listen("tcp", ":8080")
if err != nil {
log.Fatal(err)
}
for {
conn, err := ln.Accept()
if err != nil {
log.Fatal(err)
}
go serveClient(conn, codec)
}
}
func serveClient(conn net.Conn, codec goavro.Codec) {
fw, err := codec.NewWriter(
goavro.Compression(goavro.CompressionDeflate),
goavro.ToWriter(conn))
if err != nil {
log.Fatal(err)
}
defer fw.Close()
// create a record that matches the schema we want to encode
someRecord, err := goavro.NewRecord(goavro.RecordSchema(recordSchema))
if err != nil {
log.Fatal(err)
}
// identify field name to set datum for
someRecord.Set("username", "Aquaman")
someRecord.Set("comment", "The Atlantic is oddly cold this morning!")
// you can fully qualify the field name
someRecord.Set("com.example.timestamp", int64(1082196484))
fw.Write(someRecord)
// create another record
if someRecord, err = goavro.NewRecord(goavro.RecordSchema(recordSchema)); err != nil {
log.Fatal(err)
}
someRecord.Set("username", "Batman")
someRecord.Set("comment", "Who are all of these crazies?")
someRecord.Set("com.example.timestamp", int64(1427383430))
fw.Write(someRecord)
}