Create Subscription After Successful Payment

[shaun-forgie]

How are we able to ensure that payment is successfully processed before creating a subscription? A number of discussions have occurred about this. See https://groups.google.com/g/killbilling-users/c/kEmVrRA7_08/m/oTBfvKdgAQAJ

[sbrossie]

The best way to achieve this with current system is to use the entitlement api to intercept the subscription call.

1. Make a 'standalone' payment - if fail abort the call. If success:
2. Generate a credit on the account for the amount
3. Have the subscription call complete and consume the credit

The payment will not be linked to the subscription though (so I realize this is not optimal), but as a workaround we can use custom tags to create a link between the two (e.g. analytics reports, ...).

[shaun-forgie]

If a flag or switche was passed to the create subscription API this flow could be managed by the backend. We could create a new subscription state called verifying_payment or extend the PENDING state to PENDING_PAYMENT to reflect this.