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@inokappa
Last active July 18, 2017 01:03
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コマンドの実行結果を JSON で返す郷
package main
import (
"fmt"
"log"
"os"
"os/exec"
"time"
"flag"
"encoding/json"
"strings"
)
var (
argCommand = flag.String("command", "", "Specify a Command.")
argTimes = flag.Int("times", 1, "Specify a Loop Counts Number.")
argInterval = flag.Int("interval", 3, "Specify a Wait Interval Times.")
)
type OutputMessages struct {
Outputs []string `json:"outputs"`
}
func runCommand(command string) (output string){
cmd := exec.Command("sh", "-c", command)
result, err := cmd.CombinedOutput()
output = strings.TrimRight(string(result), "\n")
if err != nil {
// fmt.Println(err)
errMessage := err.Error() + ": " + output
log.Printf(string(errMessage))
return output
}
return output
}
func main() {
flag.Parse()
if *argCommand == "" {
fmt.Println("Please specify `-command` option.")
os.Exit(1)
}
var stdout string
var stdouts []string
for i := 1; i <= *argTimes; i++ {
stdout = runCommand(*argCommand)
time.Sleep(time.Duration(*argInterval) * time.Second)
stdouts = append(stdouts, stdout)
}
outputMessage := OutputMessages{Outputs: []string(stdouts)}
jsonBytes, err := json.Marshal(outputMessage)
if err != nil {
fmt.Println(err.Error())
os.Exit(1)
}
fmt.Println(string(jsonBytes))
}
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