使用服务帐户插入Google日历条目

Question

我正在尝试使用服务帐户在Google日历上创建条目。我真的很接近，但是最后一行是行不通的。我500 Internal Service Error让它运行时得到提示。否则，程序将毫无错误地运行，无论花费多少。

该Calendar.php文件的内容可以发现在这里。在insert()我试图调用方法开始在该文件上的1455线。

<?php

function calendarize ($title, $desc, $ev_date, $cal_id) {

    session_start();

    /************************************************
    Make an API request authenticated with a service
    account.
    ************************************************/
    set_include_path( '../google-api-php-client/src/');

    require_once 'Google/Client.php';
    require_once 'Google/Service/Calendar.php';

    // (not real keys)
    $client_id = '843319906820-jarm3f5ctbtjj9b7lp5qdcqal54p1he6.apps.googleusercontent.com';
    $service_account_name = '[e-mail]';
    $key_file_location = '../google-api-php-client/calendar-249226a7a27a.p12';

//    echo pageHeader("Service Account Access");
    if (!strlen($service_account_name) || !strlen($key_file_location))
        echo missingServiceAccountDetailsWarning();

    $client = new Google_Client();
    $client->setApplicationName("xxxx Add Google Calendar Entries");

    if (isset($_SESSION['service_token'])) {
        $client->setAccessToken($_SESSION['service_token']);
    }

    $key = file_get_contents($key_file_location);
    $cred = new Google_Auth_AssertionCredentials(
        $service_account_name, 
        array('https://www.googleapis.com/auth/calendar'), 
        $key
    );
    $client->setAssertionCredentials($cred);
    if($client->getAuth()->isAccessTokenExpired()) {
        $client->getAuth()->refreshTokenWithAssertion($cred);
    }
    $_SESSION['service_token'] = $client->getAccessToken();

    // Prior to this, the code has mostly come from Google's example
    //     google-api-php-client / examples / service-account.php
    // and relates to getting the access tokens.

    // The rest of this is about setting up the calendar entry.
    //Set the Event data
    $event = new Google_Service_Calendar_Event();
    $event->setSummary($title);
    $event->setDescription($desc);

    $start = new Google_Service_Calendar_EventDateTime();
    $start->setDate($ev_date);
    $event->setStart($start);

    $end = new Google_Service_Calendar_EventDateTime();
    $end->setDate($ev_date);     
    $event->setEnd($end);

    $calendarService = new Google_Service_Calendar($client);
    $calendarList = $calendarService->calendarList;

    $events = $calendarService->events;

    // if I leave this line, my code won't crash (but it won't do anything, either)
    //echo "here"; die();

    $events.insert($cal_id, $event, false);
}

?>

Answer 1

我想通了。由于我看不到将服务帐户与API v3一起使用的完整示例，因此我将发布完整的解决方案以供参考。但是，除了实现代码外，还需要做一些事情：

1）您需要转到Google
Developer的控制台，
并将您的帐户标记为“服务帐户”。这会将其与Web应用程序区分开。重要的区别在于，添加事件之前不会提示任何人登录其帐户，因为该帐户属于您的应用程序，而不是最终用户。有关更多信息，请参阅从第5页开始的本文。

2）您需要创建一个公钥/私钥对。在开发人员的控制台中，单击“凭据”。在您的服务帐户下，单击“生成新的P12密钥”。您需要将其存储在某个地方。该文件位置$key_file_location在下面的代码中成为变量字符串。

3）同样，从开发人员的控制台中，您需要启用CalendarAPI。在您的项目中，您会在最左边看到APIs。选择它并找到CalendarAPI。单击它，接受服务条款，并确认它现在显示在Enabled APIs状态为On

4）在您要向其添加事件的Google日历中，在“设置”下，单击“日历设置”，然后在顶部的“共享此日历”上。在“人员”字段中的“与特定的人共享”下，粘贴服务帐户凭据中的电子邮件地址。将权限设置更改为“对事件进行更改”。不要忘记保存更改。

然后，在某处实现此代码。

如果有混淆或遗漏之处，请发表评论。祝好运！

<?php

function calendarize ($title, $desc, $ev_date, $cal_id) {

    session_start();

    /************************************************
    Make an API request authenticated with a service
    account.
    ************************************************/
    set_include_path( '../google-api-php-client/src/');

    require_once 'Google/Client.php';
    require_once 'Google/Service/Calendar.php';

    //obviously, insert your own credentials from the service account in the Google Developer's console
    $client_id = '843319906820-xxxxxxxxxxxxxxxxxxxdcqal54p1he6.apps.googleusercontent.com';
    $service_account_name = '[e-mail]';
    $key_file_location = '../google-api-php-client/calendar-xxxxxxxxxxxx.p12';

    if (!strlen($service_account_name) || !strlen($key_file_location))
        echo missingServiceAccountDetailsWarning();

    $client = new Google_Client();
    $client->setApplicationName("Whatever the name of your app is");

    if (isset($_SESSION['service_token'])) {
        $client->setAccessToken($_SESSION['service_token']);
    }

    $key = file_get_contents($key_file_location);
    $cred = new Google_Auth_AssertionCredentials(
        $service_account_name, 
        array('https://www.googleapis.com/auth/calendar'), 
        $key
    );
    $client->setAssertionCredentials($cred);
    if($client->getAuth()->isAccessTokenExpired()) {
        $client->getAuth()->refreshTokenWithAssertion($cred);
    }
    $_SESSION['service_token'] = $client->getAccessToken();

    $calendarService = new Google_Service_Calendar($client);
    $calendarList = $calendarService->calendarList;

    //Set the Event data
    $event = new Google_Service_Calendar_Event();
    $event->setSummary($title);
    $event->setDescription($desc);

    $start = new Google_Service_Calendar_EventDateTime();
    $start->setDateTime($ev_date);
    $event->setStart($start);

    $end = new Google_Service_Calendar_EventDateTime();
    $end->setDateTime($ev_date);
    $event->setEnd($end);

    $createdEvent = $calendarService->events->insert($cal_id, $event);

    echo $createdEvent->getId();
}

?>

一些有用的资源：
服务帐户的Github示例
Google Developers Console，用于在API
v3中插入事件
使用OAuth 2.0访问Google API