使用PHP客户端设置Google Calendar API的推送通知

Question

但是他们似乎没有一个方法来观看PHP库中的谷歌日历资源。其他库可能有watch方法，但我不太确定。

基本上，为了设置特定资源的推送通知，您必须向如下URL发送post请求······

POST https://www.googleapis.com/calendar/v3/calendars/[e-mail]/events/watch
Authorization: Bearer auth_token_for_current_user
Content-Type: application/json

{
  "id": "01234567-89ab-cdef-0123456789ab", // Your channel ID.
  "type": "web_hook",
  "address": "https://mydomain.com/notifications" // Your receiving URL.
}

我可以在PHP中使用curl轻松地做到这一点，但我的问题是请求没有经过Google OAuth令牌的授权，因此会导致错误。

更新

我试图发送连接到谷歌没有添加适当的头，所以我得到了一个授权错误。更正了该部分之后，我仍然遇到Invalid Credentials错误。下面是我的代码片段的样子...

    $url = sprintf("https://www.googleapis.com/calendar/v3/calendars/%s/events/watch", $calendar);

    /* setup the POST parameters */
    $fields = array(
        'id'        => "some_unique_key",
        'type'      => "web_hook",
        'address'   => sprintf("http://%s//event_status/update_google_events", $_SERVER['SERVER_NAME'])
        );

    /* convert the POST parameters to URL query */
    $fields_string = '';
    foreach ($fields as $key => $value) {
        $fields_string .= sprintf("%s=%s&", $key, $value);
    }
    rtrim($fields_string, '&');

    /* setup POST headers */
    $headers[] = 'Content-Type: application/json';
    $headers[] = 'Authorization: OAuth ' . $access_token;

    /* send POST request */
    $channel = curl_init();
    curl_setopt($channel, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($channel, CURLOPT_URL, $url);
    curl_setopt($channel, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($channel, CURLOPT_POST, true);
    curl_setopt($channel, CURLOPT_POSTFIELDS, $fields_string);
    curl_setopt($channel, CURLOPT_CONNECTTIMEOUT, 2);
    curl_setopt($channel, CURLOPT_TIMEOUT, 3);
    $response = curl_exec($channel);
    curl_close($channel);

    error_log($response);

Answer 1

这是我解决问题的办法。我在谷歌游乐场里摆弄了一下，就知道我做错了什么。

我所做的就是

• 我对POST请求的正文进行了JSON编码，而不是发送URL查询参数。
• 将POST请求的授权部分从OAuth{access_token}更改为承载{access_token}。

$url = sprintf("https://www.googleapis.com/calendar/v3/calendars/%s/events/watch", $calendar);

/* setup the POST parameters */
$fields = json_encode(array(
    'id'        => "some_unique_key",
    'type'      => "web_hook",
    'address'   => sprintf("http://%s//event_status/update_google_events", $_SERVER['SERVER_NAME'])
    ));

/* setup POST headers */
$headers[] = 'Content-Type: application/json';
$headers[] = 'Authorization: Bearer ' . $access_token;

/* send POST request */
$channel = curl_init();
curl_setopt($channel, CURLOPT_HTTPHEADER, $headers);
curl_setopt($channel, CURLOPT_URL, $url);
curl_setopt($channel, CURLOPT_RETURNTRANSFER, true);
curl_setopt($channel, CURLOPT_POST, true);
curl_setopt($channel, CURLOPT_POSTFIELDS, $fields);
curl_setopt($channel, CURLOPT_CONNECTTIMEOUT, 2);
curl_setopt($channel, CURLOPT_TIMEOUT, 3);
$response = curl_exec($channel);
curl_close($channel);

error_log($response);