/
main.go
174 lines (142 loc) · 3.62 KB
/
main.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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
package main
import (
"context"
"encoding/json"
"errors"
"flag"
"fmt"
"log"
"strings"
"time"
"github.com/gomodule/redigo/redis"
"github.com/mistsys/mist_go_utils/uuid"
"golang.org/x/sync/errgroup"
)
// A list of task types.
const (
defaultRedisAddress = "127.0.0.1:6379"
defaultNumberOfJobs = 1
defaultConsumerConcurrency = 2048
key = "list:wq"
)
var (
redisAddress = flag.String("r", defaultRedisAddress, "Redis server address, defaults to 127.0.0.1:6379")
numJobs = flag.Int("j", defaultNumberOfJobs, "Number of numJto submit, defaults to 1")
// consumerConcurrency = flag.Int("cc", defaultConsumerConcurrency, "Number of concurrent consumers, defaults to 2048")
redisClusterPool *redis.Pool
)
type OrgTask struct {
OrgID uuid.TimeUUID
Devices int
}
func main() {
flag.Parse()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
g, _ := errgroup.WithContext(ctx)
rdb, err := createRedisPool(*redisAddress, 5, 10)
if err != nil {
panic(err)
}
defer rdb.Close()
g.Go(func() error {
return produce(rdb)
})
g.Go(func() error {
return consume(rdb)
})
err = g.Wait() // Wait for all services to exit.
if err != nil && !errors.Is(err, context.Canceled) {
log.Printf("[ERRGROUP] %v", err)
}
}
func createRedisPool(addr string, idle, active int, opts ...redis.DialOption) (*redis.Pool, error) {
return &redis.Pool{
MaxIdle: idle,
MaxActive: active,
IdleTimeout: time.Minute,
Wait: true,
Dial: func() (redis.Conn, error) {
return redis.Dial("tcp", addr, opts...)
},
TestOnBorrow: func(c redis.Conn, t time.Time) error {
if time.Since(t) < time.Minute {
return nil
}
_, err := c.Do("PING")
return err
},
}, nil
}
func parseRedisClusterMember(err string) string {
// MOVED 12359 10.1.20.65:6379
return err[strings.LastIndex(err, " ")+1:]
}
func produceJob(rdb *redis.Pool, task OrgTask) error {
conn := rdb.Get()
defer conn.Close()
j, err := json.Marshal(task)
if err != nil {
return fmt.Errorf("enqueue: cannot marshal job to json: %v", err)
}
_, err = conn.Do("LPUSH", key, j)
if err != nil {
return fmt.Errorf("enqueue: cannot enqueue job: %v", err)
}
return nil
}
func produce(rdb *redis.Pool) error {
for {
for i := 0; i < *numJobs; i++ {
task := OrgTask{
OrgID: uuid.UUID1(time.Now().UnixNano()),
Devices: i,
}
err := produceJob(rdb, task)
if err != nil {
return err
}
log.Printf("enqueue: job: %d", i)
}
time.Sleep(10 * time.Second)
}
}
func consume(rdb *redis.Pool) error {
conn := rdb.Get()
defer conn.Close()
for {
res, err := redis.Strings(conn.Do("BRPOP", key, 0))
log.Printf(">>>> res: %#v, err: %#v", res, err)
if err != nil && strings.HasPrefix(err.Error(), "MOVED ") {
member := parseRedisClusterMember(err.Error())
log.Printf(">>>> MOVED: %s: res: %#v, err: %#v", member, res, err)
rdb2, err := createRedisPool(member, 1, 1)
if err != nil {
log.Printf("dequeue: cannot pop job after moved: %s: %v", member, err)
continue
}
conn2 := rdb2.Get()
res, err = redis.Strings(conn2.Do("BLPOP", key, 0))
conn2.Close()
rdb2.Close()
log.Printf(">>>> AFTER MOVED: %s: res: %#v, err: %#v", member, res, err)
}
if err != nil {
if err != nil {
log.Printf("dequeue: cannot pop job: %v", err)
continue
}
}
if len(res) != 2 {
log.Printf("dequeue: cannot pop job, invalid response: %v", res)
continue
}
var j OrgTask
err = json.Unmarshal([]byte(res[1]), &j)
if err != nil {
log.Printf("dequeue: cannot pop job: %v", err)
continue
}
log.Printf("dequeue: completed job: %#v", j)
}
}