outer_check_site/main.go

package main

import (
	"database/sql"
	"fmt"
	_ "github.com/mattn/go-sqlite3"
	"net/http"
	"os"
)

var Db *sql.DB

func checkError(err error) {
	if err != nil {
		fmt.Fprintf(os.Stderr, "Error: %v\n", err.Error())
		panic(err)
	}
}

func requestHandler(w http.ResponseWriter, r *http.Request) {
	defer func() {
		if x := recover(); x != nil {
			return
		}
	}()

	r.ParseForm()
	path := r.URL.Path

	stmt, err := Db.Prepare("REPLACE INTO `alive` (`path`, `timestamp`) VALUES (?, CURRENT_TIMESTAMP)")
	checkError(err)

	_, err = stmt.Exec(path)
	checkError(err)

	fmt.Fprintf(w, "ok")
}

func main() {
	var err error

	Db, err = sql.Open("sqlite3", "db")
	checkError(err)

	http.HandleFunc("/", requestHandler)
	err = http.ListenAndServe(":60000", nil)
	if err != nil {
		fmt.Fprintf(os.Stderr, "http.ListenAndServer() Error: %v\n", err.Error())
	}
}