Ping Model

Code

ping
├── .env
├── Dockerfile
├── database
│   ├── config.php
│   ├── database.php
│   ├── schema.mwb
│   └── schema.sql
├── docker-compose.yml
├── install
│   └── index.php
├── model
│   ├── host.php
│   ├── icmp.php
│   └── packet.php
└── test.php

docker-compose.yml:

version: "3"

services:
  web:
    container_name: web
    image: ifpb/php:7.3-apache-pdo
    build: .
    networks:
      - app-tier
    ports:
      - 8080:80
    volumes:
      - ./:/var/www/html/
    depends_on:
      - mysql

  mysql:
    container_name: mysql
    image: mysql:8.0
    command:
      - --default-authentication-plugin=mysql_native_password
    environment:
      MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD}
      MYSQL_DATABASE: ${MYSQL_DATABASE}
      MYSQL_USER: ${MYSQL_USER}
      MYSQL_PASSWORD: ${MYSQL_PASSWORD}
    networks:
      - app-tier
    ports:
      - 3306:3306

  adminer:
    container_name: adminer
    image: adminer:4.7.5
    restart: always
    networks:
      - app-tier
    ports:
      - 8081:8080
    depends_on:
      - mysql

networks:
  app-tier:
    driver: bridge

Dockerfile:

FROM php:7.3-apache

RUN apt -y update \
  && apt install -y \
  mariadb-client

# pdo_mysql package
RUN docker-php-ext-install pdo_mysql

.env:

MYSQL_ROOT_PASSWORD=secret
MYSQL_DATABASE=example
MYSQL_USER=devuser
MYSQL_PASSWORD=devpass

Database

database/schema.sql:

DROP DATABASE IF EXISTS monitor;
CREATE DATABASE monitor;
USE monitor;

DROP TABLE IF EXISTS host;
CREATE TABLE host (
  id int NOT NULL AUTO_INCREMENT,
  name varchar(100) NOT NULL,
  address varchar(100) NOT NULL,
  PRIMARY KEY (id)
);

INSERT INTO host
  (name, address)
VALUES
  ('www.google.com', '216.58.222.100');

DROP TABLE IF EXISTS icmp;
CREATE TABLE icmp(
  id int NOT NULL AUTO_INCREMENT,
  transmitted int NOT NULL,
  received int NOT NULL,
  created_at datetime NOT NULL,
  host_id int NOT NULL,
  PRIMARY KEY (id),
  KEY host_id (host_id),
  CONSTRAINT fk_host_id FOREIGN KEY (host_id) REFERENCES host (id)
);

INSERT INTO icmp
  (transmitted, received, created_at, host_id)
VALUES
  (2, 2, NOW(), 1);

DROP TABLE IF EXISTS packet;
CREATE TABLE packet(
  id int NOT NULL AUTO_INCREMENT,
  seq int NOT NULL,
  ttl int NOT NULL,
  time float NOT NULL,
  icmp_id int NOT NULL,
  PRIMARY KEY (id),
  KEY icmp_id (icmp_id),
  CONSTRAINT fk_icmp_id FOREIGN KEY (icmp_id) REFERENCES icmp(id)
);

INSERT INTO packet
  (seq, ttl, time, icmp_id)
VALUES
  (0, 53, 83.023, 1),
  (1, 53, 104.898, 1);

Install

install/index.php:

<?php

require_once(__DIR__.'/../database/config.php');

try {
  $schema = file_get_contents('../database/schema.sql');
  $connection = new PDO(DB.":host=".DBHOST, DBUSER, DBPWD);
  $connection->exec($schema);
  echo "Database installed!";
  // header('Location: home.php');;
} catch (PDOException $e) {
  echo 'Connection failed: ' . $e->getMessage();
}

database/config.php:

<?php

const DB = 'mysql';
const DBHOST = 'mysql';
const DBNAME = 'monitor';
const DBUSER = 'root';
const DBPWD = 'secret';

http://localhost:8080/install/

PDO Model

Database Model

database/database.php:

<?php
namespace Database;

use \PDO;

require_once('config.php');

class Database {

  protected $connection;

  function __construct(){
    $dsn = DB.":dbname=".DBNAME.";host=".DBHOST;
    try {
      $this->connection = new PDO($dsn, DBUSER, DBPWD);
    } catch (PDOException $e) {
      echo 'Connection failed: ' . $e->getMessage();
    }
  }

}

Host Model

model/host.php:

<?php
namespace Model;

use Database\Database;
use \PDO;

require_once __DIR__."/../database/database.php";

class Host extends Database {

  public function create($name, $address) {
    $sql = "INSERT INTO host (name, address) VALUES ('${name}', '${address}');";
    try {
      $this->connection->exec($sql);
      return $this->connection->lastInsertId();
    } catch(PDOExecption $e) { 
      $this->connection->rollback(); 
      print "Error!: " . $e->getMessage(); 
      return null;
    } 
  }

  public function read($id) {
    $sql = "SELECT * FROM host WHERE id = ${id}";
    $pdoStm = $this->connection->query($sql);
    return $pdoStm ? $pdoStm->fetch(PDO::FETCH_ASSOC) : null;
  }

  public function readByNameAddress($name, $address) {
    $sql = "SELECT * FROM host WHERE name='${name}' AND address='${address}'";
    $pdoStm = $this->connection->query($sql);
    return $pdoStm ? $pdoStm->fetch(PDO::FETCH_ASSOC) : null;
  }

  public function readAll() {
    $sql = "SELECT * FROM host";
    $pdoStm = $this->connection->query($sql);
    return $pdoStm ? $pdoStm->fetchAll(PDO::FETCH_ASSOC) : null;
  }

  public function readOrCreate($name, $address) {
    $result = $this->readByNameAddress($name, $address);

    if ($result) {
      return $result;
    } else {
      return $this->create($name, $address);
    }
  }
  
  public function update($id, $name, $address) {
    $sql = "UPDATE host
            SET name='${name}', address='${address}'
            WHERE id=${id}";
    try {
      return $this->connection->exec($sql);
    } catch(PDOExecption $e) { 
      $this->connection->rollback(); 
      print "Error!: " . $e->getMessage(); 
    }
  }
  
  public function remove($id) {
    $sql = "DELETE FROM host WHERE id=${id}";
    try {
      return $this->connection->exec($sql);
    } catch(PDOExecption $e) { 
      $this->connection->rollback(); 
      print "Error!: " . $e->getMessage(); 
    }
  }

}

ICMP Model

model/icmp.php:

<?php
namespace Model;

use Database\Database;
use \PDO;

require_once __DIR__."/../database/database.php";

class Icmp extends Database {

  public function create($transmitted, $received, $host_id) {
    $sql = "INSERT INTO icmp (transmitted, received, created_at, host_id)
            VALUES (${transmitted}, ${received}, NOW(), ${host_id});";
    try {
      $this->connection->exec($sql);
      return $this->connection->lastInsertId();
    } catch(PDOExecption $e) { 
      $this->connection->rollback(); 
      print "Error!: " . $e->getMessage(); 
      return null;
    } 
  }

  public function read($id) {
    $sql = "SELECT * FROM icmp WHERE id = ${id}";
    $pdoStm = $this->connection->query($sql);
    return $pdoStm->fetch(PDO::FETCH_ASSOC);
  }

  public function readAll() {
    $sql = "SELECT * FROM icmp";
    $pdoStm = $this->connection->query($sql);
    return $pdoStm->fetchAll(PDO::FETCH_ASSOC);
  }

  public function readJoinAll() {
    $sql = "SELECT name, address, transmitted, received, created_at, seq, ttl, time
            FROM icmp INNER JOIN host INNER JOIN packet
            WHERE host.id = icmp.host_id AND icmp.id = packet.icmp_id";
    $pdoStm = $this->connection->query($sql);
    return $pdoStm->fetchAll(PDO::FETCH_ASSOC);
  }
  
  public function update($id, $transmitted, $received, $created_at, $host_id) {
    $sql = "UPDATE icmp
            SET transmitted=${transmitted}, received=${received}, created_at=DATE(${created_at}), host_id=${host_id}
            WHERE id=${id}";
    try {
      return $this->connection->exec($sql);
    } catch(PDOExecption $e) { 
      $this->connection->rollback(); 
      print "Error!: " . $e->getMessage(); 
    }
  }
  
  public function remove($id) {
    $sql = "DELETE FROM icmp WHERE id=${id}";
    try {
      return $this->connection->exec($sql);
    } catch(PDOExecption $e) { 
      $this->connection->rollback(); 
      print "Error!: " . $e->getMessage(); 
    }
  }

}

Packet Model

model/packet.php:

<?php
namespace Model;

use Database\Database;
use \PDO;

require_once __DIR__."/../database/database.php";

class Packet extends Database {

  public function create($seq, $ttl, $time, $icmp_id) {
    $sql = "INSERT INTO packet (seq, ttl, time, icmp_id)
            VALUES (${seq}, ${ttl}, ${time}, ${icmp_id});";
    try {
      $this->connection->exec($sql);
      return $this->connection->lastInsertId();
    } catch(PDOExecption $e) { 
      $this->connection->rollback(); 
      print "Error!: " . $e->getMessage(); 
      return null;
    } 
  }

  public function read($id) {
    $sql = "SELECT * FROM packet WHERE id = ${id}";
    $pdoStm = $this->connection->query($sql);
    return $pdoStm->fetch(PDO::FETCH_ASSOC);
  }

  public function readAll() {
    $sql = "SELECT * FROM packet";
    $pdoStm = $this->connection->query($sql);
    return $pdoStm->fetchAll(PDO::FETCH_ASSOC);
  }
  
  public function update($id, $seq, $ttl, $time, $icmp_id) {
    $sql = "UPDATE packet
            SET seq=${seq}, ttl=${ttl}, time=${time}, icmp_id=${icmp_id}
            WHERE id=${id}";
    try {
      return $this->connection->exec($sql);
    } catch(PDOExecption $e) { 
      $this->connection->rollback(); 
      print "Error!: " . $e->getMessage(); 
    }
  }
  
  public function remove($id) {
    $sql = "DELETE FROM packet WHERE id=${id}";
    try {
      return $this->connection->exec($sql);
    } catch(PDOExecption $e) { 
      $this->connection->rollback(); 
      print "Error!: " . $e->getMessage(); 
    }
  }

}

How to CRUD

test.php:

<pre>
<?php

use Model\Icmp;
use Model\Packet;
use Model\Host;

require('model/icmp.php');
require('model/packet.php');
require('model/host.php');

$icmp = new Icmp();
$packet = new Packet();
$host = new Host();

// Create IFPB 
$hostId = $host->create('www.ifpb.edu.br', '200.129.77.62');

$icmpId = $icmp->create(2, 2, $hostId);

$packet->create(0, 63, 123, $icmpId);
$packet->create(1, 63, 121, $icmpId);

// Update IFPB
$hostIFPB = $host->readOrCreate('www.ifpb.edu.br', '200.129.77.62');

$icmpId = $icmp->create(2, 2, $hostIFPB["id"]);

$packet->create(0, 63, 123, $icmpId);
$packet->create(1, 63, 121, $icmpId);

// Create IFRN
$hostId = $host->create('www.ifrn.edu.br', '200.137.2.130');

$icmpId = $icmp->create(2, 2, $hostId);

$packet->create(0, 63, 104, $icmpId);
$packet->create(1, 63, 104, $icmpId);

// Print all ICMPs
print_r($icmp->readJoinAll());
?>
<pre>

http://localhost:8080/test.php