Configure payment sending attempts

[mkurapov]

Context

Currently, in backend, we are unable to configure the amount of times a payment is retried. Instead, we have a magic number:

rafiki/packages/backend/src/open_payments/payment/outgoing/worker.ts

Line 13 in af2ca8e

const MAX_STATE_ATTEMPTS = 5

This should be a configurable ENV variable.

Todos

• Allow payment sending to be a configurable property
• Make a user-docs issue to have the writers add this new env variable to the docs

[dead8309]

Hey can i do this one ? from my understanding of codebase

• we have to add a new env config field
• add IAppConfig field in
  

  rafiki/packages/backend/src/open_payments/payment/outgoing/service.ts

  Line 61 in af2ca8e

  export interface ServiceDependencies extends BaseService {

• and access it in
  

  rafiki/packages/backend/src/open_payments/payment/outgoing/worker.ts

  Line 97 in af2ca8e

  if (stateAttempts < MAX_STATE_ATTEMPTS && isRetryableError(err)) {

Happy to open a pr if this is the correct way

[sabineschaller]

Hi @dead8309, yes, that should be it. I'll assign you. Thank you and looking forward to this PR 🙂!