Google Billing API:订阅购买后不久，触发订阅过期，紧接着订阅续订 [英] Google Billing API: Shortly after subscription purchase, subscription expired is triggered, directly followed by subscription renewed

问题描述

我正在使用 Firebase Cloud Functions 来处理应用内购买的后端流程.如果我购买订阅(在 Flutter/Android 客户端上)，购买流程没有问题.但是，当第一次续订发生时，我首先收到订阅已过期的实时开发人员通知，大约 50 秒后，我收到订阅已续订的新通知.

I am using Firebase Cloud Functions to handle the back-end process for In-App-Purchases. If I purchase a subscription (on Flutter/Android client), the purchase flow works without problems. However, when the first Renewal happens, I get first a Real Time Developer Notification that the Subscription has Expired, and around 50 Seconds later I get a new notification that the subscription got renewed.

详细流程如下:

1.在客户端购买订阅(目前处于内部测试模式)

1. Purchase subscription on Client (at the moment in internal testing Mode)

--- Google Cloud Logging 事件开始 (hh:mm:ss):

--- Start of Google Cloud Logging Events (hh:mm:ss):

<强>2.00:00:00 - 通知订阅已触发(空函数，只打印到控制台)

2. 00:00:00 - Notification Subscription Purchased Triggered (empty function, only prints to console)

3.在Client，触发InAppPurchaseConnection purchaseUpdatedStream(Flutter)，Client向后端发送数据，触发Cloud Function verifyPurchase.

3. On Client, InAppPurchaseConnection purchaseUpdatedStream (Flutter) is triggered, Client sends data to back-end and Cloud Function verifyPurchase is triggered.

4.00:00:03 - verifyPurchase 函数执行开始

4. 00:00:03 - verifyPurchase function execution started

5.00:00:05 - 收到状态 200 响应

5. 00:00:05 - Status 200 response received

6.00:00:06 - 收到确认响应(状态 204)

6. 00:00:06 - Acknowledge Response received (Status 204)

7. 直到这里一切正常，我可以在 Firestore DB 中看到正确的数据

8.00:04:08 - 通知订阅过期触发(后端撤销订阅，用户没有购买任何附加服务)
订阅状态响应:

8. 00:04:08 - Notification Subscription Expired Triggered (back-end revokes subscription, leaving the user without any additional services she/he purchased)
Subscription Status response:

{"startTimeMillis":"1616129098091",
"expiryTimeMillis":"1616130591517",
自动更新":假，
"priceCurrencyCode":"KRW",
priceAmountMicros":2900000000"，
"countryCode":"KR",
开发者有效负载":"，
"取消原因":0,
"userCancellationTimeMillis":"1616130398607",
orderId":GPA.3391-[...].3"，
"purchaseType":0,
确认状态":1，
种类":androidpublisher#subscriptionPurchase"，
obfuscatedExternalAccountId":q[..]3"
}

{ "startTimeMillis":"1616129098091",
"expiryTimeMillis":"1616130591517",
"autoRenewing":false,
"priceCurrencyCode":"KRW",
"priceAmountMicros":"2900000000",
"countryCode":"KR",
"developerPayload":"",
"cancelReason":0,
"userCancellationTimeMillis":"1616130398607",
"orderId":"GPA.3391-[...].3",
"purchaseType":0,
"acknowledgementState":1,
"kind":"androidpublisher#subscriptionPurchase",
"obfuscatedExternalAccountId":"q[..]3"
}

->此处的取消​​原因指出:0. 用户取消了订阅(事实并非如此)

->AcknowledgementState 为 1:已确认

请参阅:REST API REF 资源:SubscriptionPurchase

9.00:05:01 - 通知订阅更新触发从这里开始，一切都按预期工作，用户收到了她/他支付的服务.

9. 00:05:01 - Notification Subscription Renewed Triggered From here on everything works as expected and the user receives the services she/he paid for.

10.~ 16. 00:10:01 ~ 00:35:20 - Notification Subscription Renewed 触发 4 次，然后取消并过期(预期行为)

10. ~ 16. 00:10:01 ~ 00:35:20 - Notification Subscription Renewed Triggered 4x times, then cancelled and expired (expected behaviour)

--- Google Cloud Logging 事件结束.

--- End of Google Cloud Logging Events.

---

export const verifyPurchase = functions.region("asia-northeast3").https.onCall(async (data, context) => {
  const {sku, purchaseToken, packageName, purchaseType} = data;
  const userId: string = context.auth?.uid ?? "";
  functions.logger.log(`USER ID: ${userId}`);

  let result = 0;

  try {
    await authClient.authorize();
    functions.logger.log("START TO CHECK SUBSCRIPTION OR ONE TIME PURCHASE");
    if (purchaseType === PurchaseType.subscription) {
      const subscription = await playDeveloperApiClient.purchases.subscriptions.get({
        packageName: packageName,
        subscriptionId: sku,
        token: purchaseToken,
      });
      functions.logger.log("SUBSCRIPTION BEING PROCESSED");
      if (subscription.status === 200 && subscription?.data?.paymentState === 1 || subscription?.data?.paymentState === 2) {
        functions.logger.log(`SUBSCRIPTION STATUS: ${subscription.status}`);

        if (!subscription.data.linkedPurchaseToken) {
          const subscriptionData: any = {
            "transactionId": purchaseToken,
            "userId": userId,
            "expirationDateMs": subscription.data.expiryTimeMillis,
            "disabled": false,
            "platform": "android",
            "receipt": data,
            "rawData": subscription.data,
          };

          await admin.firestore().collection("subscriptions").add(subscriptionData).then(
              async (value) => {
               [...user Data being updated on DB...]
          );

          const acknowdlegeResponse = await playDeveloperApiClient.purchases.subscriptions.acknowledge({
            packageName: packageName,
            subscriptionId: sku,
            token: purchaseToken,
            requestBody: {
            },
          });
          functions.logger.info(`ACKNOWLEDGE RESPONSE SUBSCRIPTION: ${JSON.stringify(acknowdlegeResponse)}`);**
        } else {
          await subscriptionChange(purchaseToken, userId, data, subscription);
        }

        result = subscription.status;
      }
    } else {
      const oneTimePurchase = await playDeveloperApiClient.purchases.products.get({
      [...part for one time purchases...]
  } catch (e) {
    // handle error
    functions.logger.error("verifyPurchase ERROR");
    functions.logger.error(e);
  }
  functions.logger.log(`RETURN RESULT: ${result}`);

  return result;
});

所以我不完全明白为什么第 8 步(已过期)会发生.我将不胜感激.

So I don't exactly understand why step 8 (expired) happens. I would appreciate any help.

推荐答案

我认为您的问题是您在确认购买之前调用了 subscriptionPurchase API，如 此评论.

I believe your issue is that you are calling the subscriptionPurchase API before acknowledging the purchase, as stated in this comment.

尝试相应地更改您的代码.

Try changing your code accordingly.

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