Struct SingleNodePayment 

pub struct SingleNodePayment {
    pub quotes: [QuotePaymentInfo; 7],
}

Single node payment structure for a chunk.

Contains exactly CLOSE_GROUP_SIZE quotes where only the median-priced one receives payment (3x), and the remaining quotes have Amount::ZERO.

The fixed-size array ensures compile-time enforcement of the quote count, making the median index always valid.

Fields

quotes: [QuotePaymentInfo; 7]

All quotes (sorted by price) - fixed size ensures median index is always valid

Implementations

impl SingleNodePayment

pub fn from_quotes( quotes_with_prices: Vec<(PaymentQuote, Amount)>, ) -> Result<Self>

Create a SingleNode payment from CLOSE_GROUP_SIZE quotes and their prices.

The quotes are automatically sorted by price (cheapest first). The median (index CLOSE_GROUP_SIZE / 2) gets 3x its quote price. The others get Amount::ZERO.

Arguments

• quotes_with_prices - Vec of (PaymentQuote, Amount) tuples (will be sorted internally)

Errors

Returns error if not exactly CLOSE_GROUP_SIZE quotes are provided.

pub fn total_amount(&self) -> Amount

Get the total payment amount (should be 3x median price)

pub fn paid_quote(&self) -> Option<&QuotePaymentInfo>

Get the median quote that receives payment.

Returns None only if the internal array is somehow shorter than MEDIAN_INDEX, which should never happen since the array is fixed-size [_; CLOSE_GROUP_SIZE].

pub async fn pay(&self, wallet: &Wallet) -> Result<Vec<TxHash>>

Pay for all quotes on-chain using the wallet.

Pays 3x to the median quote and 0 to the others.

Errors

Returns an error if the payment transaction fails.

pub async fn verify(&self, network: &EvmNetwork) -> Result<Amount>

Verify that a median-priced quote was paid at least 3× its price on-chain.

When multiple quotes share the median price (a tie), the client and verifier may sort them in different order. This method checks all quotes tied at the median price and accepts the payment if any one of them was paid the correct amount.

Returns

The on-chain payment amount for the verified quote.

Errors

Returns an error if the on-chain lookup fails or none of the median-priced quotes were paid at least 3× the median price.

Trait Implementations

impl Clone for SingleNodePayment

fn clone(&self) -> SingleNodePayment

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SingleNodePayment

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

Formats the value using the given formatter.