/
redis.go
115 lines (97 loc) · 2.84 KB
/
redis.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
111
112
113
114
115
// Copyright (C) 2015-2018 Nicolas Lamirault <nicolas.lamirault@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 redis
import (
"fmt"
"time"
goredis "github.com/garyburd/redigo/redis"
"github.com/golang/glog"
"github.com/nlamirault/abraracourcix/config"
"github.com/nlamirault/abraracourcix/storage"
)
const (
label = "redis"
)
type redisDB struct {
keyprefix string
address string
pool *goredis.Pool
}
func init() {
storage.RegisterStorage(label, newRedisStorage)
}
func newRedisStorage(conf *config.Configuration) (storage.Storage, error) {
glog.V(1).Infof("Create storage using Redis : %s", conf.Storage)
return &redisDB{
// pool: pool,
address: conf.Storage.Redis.Address,
keyprefix: conf.Storage.Redis.Keyprefix,
}, nil
}
func (redisDB *redisDB) Name() string {
return label
}
func (redisDB *redisDB) Init() error {
glog.V(1).Info("Initialize")
redisDB.pool = &goredis.Pool{
MaxIdle: 3,
IdleTimeout: 240 * time.Second,
Dial: func() (goredis.Conn, error) {
return goredis.Dial("tcp", fmt.Sprintf(":%s", redisDB.address))
},
}
return nil
}
func (redisDB *redisDB) List() ([][]byte, error) {
glog.V(1).Infof("List all URLs")
urls := [][]byte{}
keys, err := goredis.Strings(redisDB.pool.Get().Do("KEYS", redisDB.keyprefix))
if err != nil {
return nil, err
}
for _, key := range keys {
urls = append(urls, []byte(key))
}
return urls, nil
}
func (redisDB *redisDB) Get(key []byte) ([]byte, error) {
glog.V(1).Infof("Search entry with key : %v", string(key))
val, err := redisDB.pool.Get().Do("HGET", redisDB.keyprefix, string(key))
if err != nil {
return nil, err
}
data, err := goredis.String(val, nil)
if err != nil {
if err != goredis.ErrNil {
return nil, err
}
return nil, nil
}
glog.V(2).Infof("Find : %s", data)
return []byte(data), err
}
func (redisDB *redisDB) Put(key []byte, value []byte) error {
glog.V(1).Infof("Put : %v %v", string(key), string(value))
_, err := redisDB.pool.Get().Do("HSET", redisDB.keyprefix, string(key), value)
return err
}
func (redisDB *redisDB) Delete(key []byte) error {
glog.V(1).Infof("Delete : %v", string(key))
_, err := redisDB.pool.Get().Do("HDEL", redisDB.keyprefix, string(key))
return err
}
func (redisDB *redisDB) Close() error {
glog.V(1).Infof("Close")
if redisDB.pool != nil {
return redisDB.pool.Close()
}
return nil
}