releaseIP.go

/*
Copyright 2016 The Kubernetes Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

// Note: the example only works with the code within the same release/branch.
package main

import (
	"fmt"
	"os"

	"database/sql"
	_ "github.com/go-sql-driver/mysql"

)

func main() {
	db, err := sql.Open("mysql", "root:654321@/net_manager")
	if err != nil {
		panic(err.Error())  // Just for example purpose. You should use proper error handling instead of panic
	}
	defer db.Close()

	// Execute the query
	rows, err := db.Query("SELECT * FROM alloc_ip where user_id = " + os.Args[1])
	if err != nil {
		panic(err.Error()) // proper error handling instead of panic in your app
	}

	// Fetch rows
	for rows.Next() {
		var id int
		var ip string
		var user_id int
		var occupied bool
		var group sql.NullString
		// get RawBytes from data
		err = rows.Scan(&id, &ip, &user_id, &occupied, &group)
		if err != nil {
			panic(err.Error()) // proper error handling instead of panic in your app
		}

		// Now do something with the data.
		// Here we just print each column as a string.
		fmt.Println(id, ip, user_id, occupied, group)
		fmt.Println("-----------------------------------")
	}
	if err = rows.Err(); err != nil {
		panic(err.Error()) // proper error handling instead of panic in your app
	}
}