Question

我想使用退避重试机制发送http请求列表。

有什么方法可以标记（带标记）仅在重试后成功的请求吗？

我看到的解决方案很少：

1）https://github.com/rholder/guava-retrying

2）https://developers.google.com/api-client-library/java/google-http-java-client/backoff

但是没有办法整合这个标记。这些库中的任何其他库或想法？

我试图覆盖此方法，但无法返回该指示标志

require("includes/connection.php");
$page ='/login.php';
require("includes/logs/log.php");
require("includes/update_session.php");

if(!empty($_SESSION['user'])) {
      echo '<script>window.location = "/index.php";</script>';
      die("Redirecting to index.php");
}
$submitted_username = '';

if(!empty($_POST)) {
    $query = "SELECT id,username,password,salt,email
              FROM users
              WHERE username = :username";

    $query_params = array(':username' => $_POST['username']);

    try {
        $stmt = $db->prepare($query);
        $result = $stmt->execute($query_params);
    }
    catch(PDOException $ex) {
        die("Failed to run query: " . $ex->getMessage());
    }

    $login_ok = false;

    $row = $stmt->fetch();
    if($row) {
        $query = "INSERT INTO CSD_LOGIN_ATTEMPTS (id) VALUES (:id)";

        $query_params = array(':id' => $row["id"]);

        try {
            $stmt = $db->prepare($query);
            $result = $stmt->execute($query_params);
        }
        catch(PDOException $ex) {
            die("Failed to run query: " . $ex->getMessage());
        }

        $check_password = hash('sha256', $_POST['password'] . $row['salt']);
        for($round = 0; $round < 65536; $round++) {
            $check_password = hash('sha256', $check_password . $row['salt']);
        }

        if($check_password === $row['password']) {
            $login_ok = true;
        }
    }

    if($login_ok) {
        unset($row['salt']);
        unset($row['password']);

        $_SESSION['user'] = $row;
        session_write_close();
        echo '<script>window.location="/index.php";</script>';
        die("Redirecting to: index.php");
    } else {
        print("Login Failed.");
        $submitted_username = htmlentities($_POST['username'], ENT_QUOTES, 'UTF-8');
    }
}
?>

<!DOCTYPE html>
<html lang="en">

<head>
  <?php
  require("includes/scripts.php");
  ?>
</head>

<body><center>
  <div id="pagewidth">
    <?php
    require("includes/header.php");
    ?>

    <div id="content">
      <section class="row">
        <h1>Login</h1>
        <form action="login.php" method="post" class='form'>
          Username:<br />
          <input style='text-align: center' type="text" name="username" value="<?php echo $submitted_username; ?>" />
          <br /><br />
          Password:<br />
          <input style='text-align: center' type="password" name="password" value="" />
          <br /><br />
          <button type="submit" value="Login" class='btnSmall grey'>Login</button>
        </form><br>
        <a href="register.php">Register</a>
      </section>
      <section class="row grey">

      </section>
    </div>
    <?php
    include("includes/footer.php");
    ?>
  </div>
</center></body>
</html>

Answer 1

结帐Failsafe。如果您希望将请求标记为成功，则可以使用事件处理程序。

有什么方法可以标记“仅在重试后成功”的任务吗？

1 个答案: