error.rs

use thiserror::Error;

use common::chain::transaction::Transaction;
use common::chain::OutPoint;
use common::primitives::amount::Amount;
use common::primitives::Id;
use common::primitives::H256;

#[derive(Debug, Error)]
pub enum Error {
    #[error("Mempool is full")]
    MempoolFull,
    #[error(transparent)]
    TxValidationError(#[from] TxValidationError),
}

#[derive(Debug, Error)]
pub enum TxValidationError {
    #[error("Transaction has no inputs.")]
    NoInputs,
    #[error("Transaction has no outputs.")]
    NoOutputs,
    #[error("Transaction has duplicate inputs.")]
    DuplicateInputs,
    #[error("Outpoint not found: {outpoint:?}")]
    OutPointNotFound {
        outpoint: OutPoint,
        tx_id: Id<Transaction>,
    },
    #[error("Transaction exceeds the maximum block size.")]
    ExceedsMaxBlockSize,
    #[error("Transaction already exists in the mempool.")]
    TransactionAlreadyInMempool,
    #[error("Transaction conflicts with another, irreplaceable transaction.")]
    ConflictWithIrreplaceableTransaction,
    #[error("The sum of the transaction's inputs' values overflows.")]
    InputValuesOverflow,
    #[error("The sum of the transaction's outputs' values overflows.")]
    OutputValuesOverflow,
    #[error("The sum of the transaction's inputs is smaller than the sum of its outputs.")]
    InputsBelowOutputs,
    #[error("Replacement transaction has fee lower than the original. Replacement fee is {replacement_fee:?}, original fee {original_fee:?}")]
    ReplacementFeeLowerThanOriginal {
        replacement_tx: H256,
        replacement_fee: Amount,
        original_tx: H256,
        original_fee: Amount,
    },
    #[error("Transaction would require too many replacements.")]
    TooManyPotentialReplacements,
    #[error("Replacement transaction spends an unconfirmed input which was not spent by any of the original transactions.")]
    SpendsNewUnconfirmedOutput,
    #[error("The sum of the fees of this transaction's conflicts overflows.")]
    ConflictsFeeOverflow,
    #[error("Transaction pays a fee that is lower than the fee of its conflicts with their descendants.")]
    TransactionFeeLowerThanConflictsWithDescendants,
    #[error("Underflow in computing transaction's additional fees.")]
    AdditionalFeesUnderflow,
    #[error("Transaction does not pay sufficient fees to be relayed.")]
    InsufficientFeesToRelay { tx_fee: Amount, relay_fee: Amount },
    #[error("Replacement transaction does not pay enough for its bandwidth.")]
    InsufficientFeesToRelayRBF,
    #[error("Rolling fee threshold not met.")]
    RollingFeeThresholdNotMet { minimum_fee: Amount, tx_fee: Amount },
    #[error("Overflow encountered while updating ancestor fee.")]
    AncestorFeeUpdateOverflow,
    #[error("Transaction is a descendant of expired transaction.")]
    DescendantOfExpiredTransaction,
    #[error("Internal Error.")]
    InternalError,
}