Struct MeltQuoteCustomResponse 

pub struct MeltQuoteCustomResponse<Q> {
    pub quote: Q,
    pub amount: Amount,
    pub fee_reserve: Amount,
    pub state: QuoteState,
    pub expiry: u64,
    pub payment_preimage: Option<String>,
    pub change: Option<Vec<BlindSignature>>,
    pub request: Option<String>,
    pub unit: Option<CurrencyUnit>,
    pub extra: Value,
}

Custom payment method melt quote response

This is a generic response type for custom payment methods.

The extra field allows payment-method-specific fields to be included without being nested. When serialized, extra fields merge into the parent JSON:

{
  "quote": "abc123",
  "state": "UNPAID",
  "amount": 1000,
  "fee_reserve": 10,
  "custom_field": "value"
}

This separation enables proper validation layering: the mint verifies well-defined fields (amount, fee_reserve, state, etc.) while passing extra through to the gRPC payment processor for method-specific validation.

It also provides a clean upgrade path: when a payment method becomes speced, its fields can be promoted from extra to well-defined struct fields without breaking existing clients.

Fields

quote: Q

Quote ID

amount: Amount

Amount to be melted

fee_reserve: Amount

Fee reserve required

state: QuoteState

Quote State

expiry: u64

Unix timestamp until the quote is valid

payment_preimage: Option<String>

Payment preimage (if payment completed)

change: Option<Vec<BlindSignature>>

Change (blinded signatures for overpaid amount)

request: Option<String>

Payment request (optional, for reference)

unit: Option<CurrencyUnit>

Currency unit

extra: Value

Extra payment-method-specific fields

These fields are flattened into the JSON representation, allowing custom payment methods to include additional data without nesting.

Implementations

impl<Q> MeltQuoteCustomResponse<Q>

where Q: ToString,

pub fn to_string_id(&self) -> MeltQuoteCustomResponse<String>

Convert the MeltQuoteCustomResponse with a quote type Q to a String

impl<Q> MeltQuoteCustomResponse<Q>

pub fn change_amount(&self) -> Option<Amount>

Total change Amount

Trait Implementations

impl<Q> Clone for MeltQuoteCustomResponse<Q>

where Q: Clone,

fn clone(&self) -> MeltQuoteCustomResponse<Q>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<Q> Debug for MeltQuoteCustomResponse<Q>

where Q: Debug,

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<'de, Q> Deserialize<'de> for MeltQuoteCustomResponse<Q>

where Q: Serialize + for<'a> Deserialize<'a>,

fn deserialize<__D>( __deserializer: __D, ) -> Result<MeltQuoteCustomResponse<Q>, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<MeltQuoteCustomResponse<QuoteId>> for MeltQuoteCustomResponse<String>

Available on crate feature mint only.

fn from( value: MeltQuoteCustomResponse<QuoteId>, ) -> MeltQuoteCustomResponse<String>

Converts to this type from the input type.

impl<Q> PartialEq for MeltQuoteCustomResponse<Q>

where Q: PartialEq,

fn eq(&self, other: &MeltQuoteCustomResponse<Q>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<Q> Serialize for MeltQuoteCustomResponse<Q>

where Q: Serialize + for<'a> Deserialize<'a>,

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<Q> Eq for MeltQuoteCustomResponse<Q>

where Q: Eq,

impl<Q> StructuralPartialEq for MeltQuoteCustomResponse<Q>