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http_server.go
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http_server.go
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package main
import (
"bytes"
"fmt"
"io/ioutil"
"log"
"net/http"
"os/exec"
)
const INFO_FILE = "/tmp/aws_stats.py"
const RDS_INFO_FILE = "/tmp/rds_stats.py"
const EC2_INFO_FILE = "/tmp/ec2_stats.py"
func getInfo(filename string) string {
s, _ := ioutil.ReadFile(filename)
return string(s)
}
func printEC2info(w http.ResponseWriter, r *http.Request) {
cmd := exec.Command("/usr/bin/python", "/usr/local/bin/aws_stats.py")
var out bytes.Buffer
cmd.Stdout = &out
err := cmd.Run()
if err != nil {
log.Fatal(err)
}
err = ioutil.WriteFile(INFO_FILE, []byte(out.String()), 0644)
if err != nil {
log.Fatal(err)
}
// read file
fmt.Fprintf(w, getInfo(INFO_FILE))
}
func printRDSstat(w http.ResponseWriter, r *http.Request) {
cmd := exec.Command("/usr/bin/python", "/usr/local/bin/rds_stats.py")
var out bytes.Buffer
cmd.Stdout = &out
err := cmd.Run()
if err != nil {
log.Fatal(err)
}
err = ioutil.WriteFile(RDS_INFO_FILE, []byte(out.String()), 0644)
if err != nil {
log.Fatal(err)
}
// read file
fmt.Fprintf(w, getInfo(RDS_INFO_FILE))
}
func printEC2stat(w http.ResponseWriter, r *http.Request) {
cmd := exec.Command("/usr/bin/python", "/usr/local/bin/ec2_stats.py")
var out bytes.Buffer
cmd.Stdout = &out
err := cmd.Run()
if err != nil {
log.Fatal(err)
}
err = ioutil.WriteFile(EC2_INFO_FILE, []byte(out.String()), 0644)
if err != nil {
log.Fatal(err)
}
// read file
fmt.Fprintf(w, getInfo(EC2_INFO_FILE))
}
func main() {
http.HandleFunc("/", printEC2info)
http.HandleFunc("/rds", printRDSstat)
http.HandleFunc("/ec2", printEC2stat)
err := http.ListenAndServe(":80", nil)
if err != nil {
log.Fatal("ListenAndServe: ", err)
}
}