/
client.go
124 lines (93 loc) · 1.95 KB
/
client.go
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package main
import (
"encoding/json"
"fmt"
"hash/crc32"
"io/ioutil"
"net/http"
"strconv"
)
type Data struct {
Key int `json:"key"`
Value string `json:"value"`
}
var serv [3]int
func putData(portno string, key string, val string) {
url := "http://localhost:" + portno + "/keys/" + key + "/" + val
//http://localhost:3002/keys/1
fmt.Println(url)
client := &http.Client{}
req, _ := http.NewRequest("PUT", url, nil)
resp, _ := client.Do(req)
fmt.Println(resp.StatusCode)
}
func getData(portno string, key string) Data {
url := "http://localhost:" + portno + "/keys/" + key
res, err := http.Get(url)
if err != nil {
panic(err)
}
defer res.Body.Close()
body, err := ioutil.ReadAll(res.Body)
if err != nil {
panic(err)
}
var f Data
//var f F
err = json.Unmarshal(body, &f)
if err != nil {
panic(err)
}
//fmt.Println(f)
return f
}
func main() {
portno := []string{"3000", "3001", "3002"}
hash := crc32.ChecksumIEEE
i := 0
for i = 0; i < 3; i++ {
keyHash := int(hash([]byte(portno[i])))
fmt.Println(keyHash, "\t")
serv[i] = keyHash + 50000000
}
pairs := map[string]string{
"1": "a",
"2": "b",
"3": "c",
"4": "d",
"5": "e",
"6": "f",
"7": "g",
"8": "h",
"9": "i",
"10": "j",
}
for i = 1; i <= 10; i++ {
a := strconv.Itoa(i)
keyHash := int(hash([]byte(a)))
fmt.Println(keyHash, "\t", i)
val, _ := pairs[a]
if keyHash > serv[0] && keyHash < serv[1] {
putData(portno[1], a, val)
} else if keyHash > serv[1] && keyHash < serv[2] {
putData(portno[2], a, val)
} else {
putData(portno[0], a, val)
}
}
fmt.Println()
fmt.Println("Now getting Data")
u := Data{}
for i = 1; i <= 10; i++ {
a := strconv.Itoa(i)
keyHash := int(hash([]byte(a)))
if keyHash > serv[0] && keyHash <= serv[1] {
u = getData(portno[1], a)
} else if keyHash > serv[1] && keyHash <= serv[2] {
u = getData(portno[2], a)
} else {
u = getData(portno[0], a)
}
fmt.Println(u)
}
}