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
|
package main
import (
"crypto/md5"
"flag"
"fmt"
"io"
"log"
"math/rand"
"os"
"sync"
"time"
"github.com/syndtr/goleveldb/leveldb"
"github.com/syndtr/goleveldb/leveldb/opt"
)
var (
dir = flag.String("dir", "./t", "directory to store level db files")
useHash = flag.Bool("isHash", false, "hash the path as the key")
dbCount = flag.Int("dbCount", 1, "the number of leveldb")
)
func main() {
flag.Parse()
totalTenants := 300
totalYears := 3
opts := &opt.Options{
BlockCacheCapacity: 32 * 1024 * 1024, // default value is 8MiB
WriteBuffer: 16 * 1024 * 1024, // default value is 4MiB
CompactionTableSizeMultiplier: 4,
}
var dbs []*leveldb.DB
var chans []chan string
for d := 0; d < *dbCount; d++ {
dbFolder := fmt.Sprintf("%s/%02d", *dir, d)
os.MkdirAll(dbFolder, 0755)
db, err := leveldb.OpenFile(dbFolder, opts)
if err != nil {
log.Printf("filer store open dir %s: %v", *dir, err)
return
}
dbs = append(dbs, db)
chans = append(chans, make(chan string, 1024))
}
var wg sync.WaitGroup
for d := 0; d < *dbCount; d++ {
wg.Add(1)
go func(d int) {
defer wg.Done()
ch := chans[d]
db := dbs[d]
for p := range ch {
if *useHash {
insertAsHash(db, p)
} else {
insertAsFullPath(db, p)
}
}
}(d)
}
counter := int64(0)
lastResetTime := time.Now()
r := rand.New(rand.NewSource(35))
for y := 0; y < totalYears; y++ {
for m := 0; m < 12; m++ {
for d := 0; d < 31; d++ {
for h := 0; h < 24; h++ {
for min := 0; min < 60; min++ {
for i := 0; i < totalTenants; i++ {
p := fmt.Sprintf("tenent%03d/%4d/%02d/%02d/%02d/%02d", i, 2015+y, 1+m, 1+d, h, min)
x := r.Intn(*dbCount)
chans[x] <- p
counter++
}
t := time.Now()
if lastResetTime.Add(time.Second).Before(t) {
p := fmt.Sprintf("%4d/%02d/%02d/%02d/%02d", 2015+y, 1+m, 1+d, h, min)
fmt.Printf("%s = %4d put/sec\n", p, counter)
counter = 0
lastResetTime = t
}
}
}
}
}
}
for d := 0; d < *dbCount; d++ {
close(chans[d])
}
wg.Wait()
}
func insertAsFullPath(db *leveldb.DB, p string) {
_, getErr := db.Get([]byte(p), nil)
if getErr == leveldb.ErrNotFound {
putErr := db.Put([]byte(p), []byte(p), nil)
if putErr != nil {
log.Printf("failed to put %s", p)
}
}
}
func insertAsHash(db *leveldb.DB, p string) {
key := fmt.Sprintf("%d:%s", hashToLong(p), p)
_, getErr := db.Get([]byte(key), nil)
if getErr == leveldb.ErrNotFound {
putErr := db.Put([]byte(key), []byte(p), nil)
if putErr != nil {
log.Printf("failed to put %s", p)
}
}
}
func hashToLong(dir string) (v int64) {
h := md5.New()
io.WriteString(h, dir)
b := h.Sum(nil)
v += int64(b[0])
v <<= 8
v += int64(b[1])
v <<= 8
v += int64(b[2])
v <<= 8
v += int64(b[3])
v <<= 8
v += int64(b[4])
v <<= 8
v += int64(b[5])
v <<= 8
v += int64(b[6])
v <<= 8
v += int64(b[7])
return
}
|
