70ecd6caa0
Transaction Science open standards monorepo. Each subdirectory is a self-contained reference protocol with its own README and licence. - openpay/ Apache-2.0 payment-acceptance stack (Rust, 26 crates) - smart-byte/ CC-BY-4.0 content-addressed value carrier (spec) - eoc/ CC-BY-4.0 energy-optimised compute (spec) The wire format and the right to fork are public. The optional hosted services are the offer; the protocols are not.
61 lines
1.8 KiB
Rust
61 lines
1.8 KiB
Rust
//! Sealed error type.
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use thiserror::Error;
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/// Crate result alias.
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pub type Result<T> = core::result::Result<T, Error>;
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/// All failure modes.
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#[derive(Debug, Error, Clone, PartialEq, Eq)]
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pub enum Error {
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/// No quote is available for the requested currency pair.
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#[error("no quote: {from_currency}/{to_currency}")]
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NoQuote {
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/// Source currency code.
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from_currency: String,
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/// Target currency code.
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to_currency: String,
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},
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/// The quote's `valid_until_unix_secs` is in the past relative
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/// to `now`.
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#[error("quote expired: {from_currency}/{to_currency} valid_until={valid_until} now={now}")]
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QuoteExpired {
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/// Source currency code.
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from_currency: String,
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/// Target currency code.
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to_currency: String,
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/// Quote's expiry timestamp.
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valid_until: u64,
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/// Current timestamp.
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now: u64,
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},
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/// Caller tried to convert between identical source/target —
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/// no FX needed.
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#[error("same-currency conversion: {0}")]
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SameCurrency(String),
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/// Quote's `source_currency` doesn't match the `Money` being
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/// converted.
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#[error("currency mismatch: money is {money}, quote source is {quote_source}")]
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CurrencyMismatch {
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/// Money's currency code.
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money: String,
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/// Quote's source currency code.
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quote_source: String,
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},
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/// `rate_ppm` was 0 — would always produce zero.
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#[error("invalid rate: ppm cannot be zero")]
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InvalidRate,
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/// Conversion overflowed `i64::MAX`. Only reachable on
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/// pathological inputs (e.g. `i64::MAX` USD-equivalent).
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#[error("conversion overflow")]
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Overflow,
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/// Forwarded `op-core` error.
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#[error(transparent)]
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Core(#[from] op_core::Error),
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}
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