golang 程序如何解析 prometheus 的 api 数据
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golang 程序如何解析 prometheus 的 api 数据
wmd_nb · 大约19小时之前 · 93 次点击 · 预计阅读时间 1 分钟 · 大约8小时之前 开始浏览package main
import (
"encoding/json"
"fmt"
)
type Person struct {
Age string `json:"status"`
Data Data `json:"data"`
Name string `json:"name"`
}
type Data struct {
Values []map[string]interface{} `json:"result"`
}
func main() {
// 假数据
b := []byte(`{"status":"success","wmd":{"result":"wmd"},"name":"wmd","data":{"resultType":"matrix","result":[{"metric":{"__name__":"namedprocess_namegroup_memory_bytes","groupname":"root","instance":"localhost:9256","job":"process_export_9256","memtype":"resident"},"values":[[1635991200,"300257280"],[1635993000,"302428160"],[1635994800,"301727744"]]}]}}`)
var p Person
err := json.Unmarshal(b, &p)
if err != nil {
fmt.Println(err)
}
wmd := p.Data.Values[0]["values"]
fmt.Println(wmd)
}
上面是代码，最后解析出来的是 interface 类型数据，但是我没办法给拿出来变成字符串或者数组类型的，没办法进行求和、平均值啊这类的。求大佬们指教
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YYYGH · #1 · 大约3小时之前
package main import ( "encoding/json" "fmt" )
type Person struct {
Age string json:"status"
Data Data json:"data"
Name string json:"name"
}
type Data struct {
Values []map[string]interface{} json:"result"
}
func main() {
// 假数据
b := []byte({"status":"success","wmd":{"result":"wmd"},"name":"wmd","data":{"resultType":"matrix","result":[{"metric":{"__name__":"namedprocess_namegroup_memory_bytes","groupname":"root","instance":"localhost:9256","job":"process_export_9256","memtype":"resident"},"values":[[1635991200,"300257280"],[1635993000,"302428160"],[1635994800,"301727744"]]}]}})
var p Person
err := json.Unmarshal(b, &p)
if err != nil {
fmt.Println(err)
}
wmd := p.Data.Values[0]["values"]
/*
下面这种方法可行，建议最好根据api返回的数据格式定义struct 去解决
*/
list := wmd.([]interface{})
sum := float64(0)
for _, v := range list {
value := v.([]interface{})
for _, data := range value {
switch data := data.(type) {
case string:
i, _ := strconv.ParseFloat(data, 64)
sum += i
case float64:
sum += data
}
}
}
fmt.Printf("%f\n", sum)
YYYGH · #2 · 大约3小时之前
type Person struct {
Age string `json:"status"`
Data Data `json:"data"`
Name string `json:"name"`
}
type Data struct {
Values []map[string]interface{} `json:"result"`
}
func main() {
// 假数据
b := []byte(`{"status":"success","wmd":{"result":"wmd"},"name":"wmd","data":{"resultType":"matrix","result":[{"metric":{"__name__":"namedprocess_namegroup_memory_bytes","groupname":"root","instance":"localhost:9256","job":"process_export_9256","memtype":"resident"},"values":[[1635991200,"300257280"],[1635993000,"302428160"],[1635994800,"301727744"]]}]}}`)
var p Person
err := json.Unmarshal(b, &p)
if err != nil {
fmt.Println(err)
}
wmd := p.Data.Values[0]["values"]
/*
下面这种方法可行，建议最好根据api返回的数据格式定义struct 去解决
*/
list := wmd.([]interface{})
sum := float64(0)
for _, v := range list {
value := v.([]interface{})
for _, data := range value {
switch data := data.(type) {
case string:
i, _ := strconv.ParseFloat(data, 64)
sum += i
case float64:
sum += data
}
}
}
fmt.Printf("%f\n", sum)
}
wmd_nb · #3 · 大约1小时之前
大佬牛逼啊，空接口还能这样用，学习了。感谢
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