Ggtcf

I'm parsing event webhooks, and for the invoice.payment_succeeded event I need to get the Invoice object, the Subscription object, and the Plan object:

 if (event.getType().equals("invoice.payment_succeeded")) {
 Invoice invoice = (Invoice) event.getData().getObject();
 Subscription subscription = invoice.getSubscriptionObject();
 Plan plan = subscription.getPlan();

The problem is that the Subscription object it's getting is null, so I can't get the plan, but in the webhook json, the invoice is clearly not null:

<com.stripe.model.Invoice@1862723626 id=in_1EAqJIJIKy5oOMbPbbnFDfhe> JSON: {
 "id": "in_1EAqJIJIKy5oOMbPbbnFDfhe",
 "object": "invoice",
 "amount_due": 500,
 "amount_paid": 500,
 "amount_remaining": 0,
 "application_fee": null,
 "attempt_count": 1,
 "attempted": true,
 "auto_advance": false,
 "billing": "charge_automatically",
 "billing_reason": "subscription_create",
 "charge": "ch_1EAqJIJIKy5oOMbPzJWZRmkB",
 "created": 1551842448,
 "currency": "usd",
 "custom_fields": null,
 "customer": "cus_EdkAtTWX48vPlL",
 "date": 1551842448,
 "default_source": null,
 "deleted": null,
 "description": null,
 "discount": null,
 "due_date": null,
 "ending_balance": 0,
 "finalized_at": 1551842448,
 "footer": null,
 "hosted_invoice_url": "https://pay.stripe.com/invoice/invst_Xk5QCVu0wZGe8yDKRjNku8do3v",
 "invoice_pdf": "https://pay.stripe.com/invoice/invst_Xk5QCVu0wZGe8yDKRjNku8do3v/pdf",
 "lines": 
 "object": "list",
 "data": [
 
 "id": "sli_b7542154e3401d",
 "object": "line_item",
 "amount": 500,
 "currency": "usd",
 "description": "1 ? Service (at $5.00 / month)",
 "discountable": true,
 "livemode": false,
 "metadata": ,
 "period": 
 "end": 1554520848,
 "start": 1551842448
 ,
 "plan": 
 "id": "plan_EYQ3ShMp3aS5RZ",
 "object": "plan",
 "active": true,
 "amount": 500,
 "billing_scheme": "per_unit",
 "created": 1550523572,
 "currency": "usd",
 "interval": "month",
 "interval_count": 1,
 "livemode": false,
 "metadata": ,
 "nickname": "535281012935229482:540347090178670611",
 "product": "prod_EYQ2LpVmAUc2Kh",
 "tiers": null,
 "tiers_mode": null,
 "transform_usage": null,
 "usage_type": "licensed",
 "deleted": null,
 "name": null,
 "statement_description": null,
 "statement_descriptor": null,
 "trial_period_days": null
 ,
 "proration": false,
 "quantity": 1,
 "subscription": "sub_Ee8abQjuYiFJXx",
 "subscription_item": "si_Ee8aKEipOAG8hQ",
 "type": "subscription"
 
 ],
 "has_more": false,
 "total_count": 1,
 "url": "/v1/invoices/in_1EAqJIJIKy5oOMbPbbnFDfhe/lines",
 "count": null,
 "request_options": null,
 "request_params": null
 ,
 "livemode": false,
 "metadata

First of all the value of the subscription attribute can be null, for example in the case of one-off invoices.

The whole Subscription object is not included in the Invoice object by default, only its identifier is. The Invoice object contained in the Event object follows the same rule. So you will need to retrieve the Subscription with its identifier as described here

if (event.getType().equals("invoice.payment_succeeded")) 
 Invoice invoice = (Invoice) event.getData().getObject();
 Subscription subscription = Subscription.retrieve(invoice.getSubscription());

The plan attribute will only be set if the subscription contains a single plan.

Note that you can "expand" Stripe objects when retrieving them. See the section Expanding Objects of the Stripe API Reference.

It states in the docs the data will only contain the relevant object for your webhook.

In an invoice's case, it's the invoice object only. Luckily that contains the subscription ID for you:

"subscription": "sub_Ee8abQjuYiFJXx",

You can use this ID to retrieve the data as

Subscription subscription = Subscription.retrieve("sub_Ee8abQjuYiFJXx");