pay_part_start -- Notification for xpay part start

DESCRIPTION

Notification added in v25.09.

The pay_part_start notification is emitted by the xpay plugin when a payment part begins.

NOTIFICATION PAYLOAD

• payment_hash (hash): The payment hash for the xpay invocation.
• groupid (u64): The xpay group identifier for the payment attempt.
• partid (u64): The identifier for this payment part.
• total_payment_msat (msat): The total payment amount for the xpay invocation.
• attempt_msat (msat): The amount this payment part attempts to deliver.
• hops (array of objects): The route hops for this payment part.:
  • next_node (pubkey): The next node for this hop.
  • short_channel_id (short_channel_id): The short channel id used for this hop.
  • direction (u32): The direction within the short channel id.
  • channel_in_msat (msat): The amount entering the hop.
  • channel_out_msat (msat): The amount leaving the hop.