Question

我正在研究Braintree订阅，以便检索客户ID和与这些ID相关的订阅价格。在我的代码中，我遵循this post的建议。

这是我的代码的摘录：

gateway = braintree.BraintreeGateway(
    braintree.Configuration(
        environment=braintree.Environment.Production,
        merchant_id= 'our_merchant_id',
        public_key='our_public_key',
        private_key='our_private_key'
    )
)
subscriptions = gateway.subscription.search(
    braintree.SubscriptionSearch.status.in_list(
        braintree.Subscription.Status.Active,
        braintree.Subscription.Status.PastDue,
        braintree.Subscription.Status.Pending
    )
)

result = {}

for subscription in subscriptions.items:
    payment_method = gateway.payment_method.find(subscription.payment_method_token)
    result[payment_method.customer_id] = subscription.price

"""do something with result """

这种方法在BT沙箱和大约100条记录的小型查询中效果很好。但是，每当我尝试查询约120个以上的订阅时，BT服务器始终会以504错误进行响应。我想在生产中一次查询约5000个订阅。有什么建议么？

跟踪：

Traceback (most recent call last):
File "BT_subscrAmount.py", line 22, in <module>
for subscription in subscriptions.items:
File "/home/karen/miniconda3/lib/python3.6/site- 
packages/braintree/resource_collection.py", line 38, in items
for item in self.__method(self.__query, batch):
File "/home/karen/miniconda3/lib/python3.6/site- 
packages/braintree/subscription_gateway.py", line 79, in __fetch
response = self.config.http().post(self.config.base_merchant_path() + 
"/subscriptions/advanced_search", {"search": criteria})
File "/home/karen/miniconda3/lib/python3.6/site- 
packages/braintree/util/http.py", line 56, in post
return self.__http_do("POST", path, Http.ContentType.Xml, params)
File "/home/karen/miniconda3/lib/python3.6/site- 
packages/braintree/util/http.py", line 86, in __http_do
Http.raise_exception_from_status(status)
File "/home/karen/miniconda3/lib/python3.6/site- 
packages/braintree/util/http.py", line 49, in raise_exception_from_status
raise UnexpectedError("Unexpected HTTP_RESPONSE " + str(status))
braintree.exceptions.unexpected_error.UnexpectedError: Unexpected 
HTTP_RESPONSE 504

Answer 1

将查询分成小批（5000个以上的订阅，成为50个100个订阅的调用），然后在返回响应时进行汇总。许多API都对速率限制和响应限制进行了硬编码。

Answer 2

在一位出色的BT支持工程师的帮助下，我们终于能够找到解决问题的方法。

说明：

当BT返回搜索结果时，它们会收集所有相关数据，并向客户端返回一个大型（序列化的）响应对象。在我们的例子中，某些订阅具有大量关联的事务，这使得获取，序列化它们以及将它们返回给客户端的过程很慢。发出请求时，BT网关以50为一组返回页面，默认超时为60秒。具有多个大型响应对象的任何组都可能会超时并产生504错误。

解决方案：

为避免这种延迟，我们可以使用ResourceCollections class中的id方法来代替items方法，而只返回对象的id。使用单个订阅ID，我们可以获取单个订阅，并且仅获取所需的属性，如下所示：

subscriptions = gateway.subscription.search(
    braintree.SubscriptionSearch.status.in_list(
    braintree.Subscription.Status.Active
    )
)

subscription_ids = subscriptions.ids

def find_customer_id(id):
    subscription = gateway.subscription.find(id)
    payment_method = gateway.payment_method.find(subscription.payment_method_token)
    return (payment_method.customer_id, subscription.price)

希望这对其他人有帮助！

Braintree订阅搜索

2 个答案: