mirror of https://github.com/poanetwork/hbbft.git
66 lines
2.8 KiB
Rust
66 lines
2.8 KiB
Rust
use bincode;
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use failure::Fail;
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use crate::fault_log;
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use crate::subset;
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use crate::threshold_decrypt;
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/// Honey badger error variants.
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#[derive(Debug, Fail)]
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pub enum Error {
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/// Failed to serialize contribution.
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#[fail(display = "Error serializing contribution: {}", _0)]
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ProposeBincode(bincode::ErrorKind),
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/// Failed to instantiate `Subset`.
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#[fail(display = "Failed to instantiate Subset: {}", _0)]
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CreateSubset(subset::Error),
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/// Failed to input contribution to `Subset`.
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#[fail(display = "Failed to input contribution to Subset: {}", _0)]
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InputSubset(subset::Error),
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/// Failed to handle `Subset` message.
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#[fail(display = "Failed to handle Subset message: {}", _0)]
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HandleSubsetMessage(subset::Error),
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/// Failed to decrypt a contribution.
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#[fail(display = "Threshold decryption error: {}", _0)]
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ThresholdDecrypt(threshold_decrypt::Error),
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/// Unknown sender
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#[fail(display = "Unknown sender")]
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UnknownSender,
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}
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/// The result of `HoneyBadger` handling an input or a message.
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pub type Result<T> = ::std::result::Result<T, Error>;
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/// Faults detectable from receiving honey badger messages
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#[derive(Clone, Debug, Fail, PartialEq)]
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pub enum FaultKind {
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/// `HoneyBadger` received a decryption share for an unaccepted proposer.
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#[fail(display = "`HoneyBadger` received a decryption share for an unaccepted proposer.")]
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UnexpectedDecryptionShare,
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/// `HoneyBadger` was unable to deserialize a proposer's ciphertext.
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#[fail(display = "`HoneyBadger` was unable to deserialize a proposer's ciphertext.")]
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DeserializeCiphertext,
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/// `HoneyBadger` received an invalid ciphertext from the proposer.
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#[fail(display = "`HoneyBadger` received an invalid ciphertext from the proposer.")]
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InvalidCiphertext,
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/// `HoneyBadger` received a message with an invalid epoch.
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#[fail(display = "`HoneyBadger` received a message with an invalid epoch.")]
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UnexpectedHbMessageEpoch,
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/// `HoneyBadger` could not deserialize bytes (i.e. a serialized Batch) from a given proposer
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/// into a vector of transactions.
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#[fail(
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display = "`HoneyBadger` could not deserialize bytes (i.e. a serialized Batch) from a
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given proposer into a vector of transactions."
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)]
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BatchDeserializationFailed,
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/// `HoneyBadger` received a fault from `Subset`.
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#[fail(display = "`HoneyBadger` received a fault from `Subset`.")]
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SubsetFault(subset::FaultKind),
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/// `HoneyBadger` received a fault from `ThresholdDecrypt`.
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#[fail(display = "`HoneyBadger` received a fault from `ThresholdDecrypt`.")]
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DecryptionFault(threshold_decrypt::FaultKind),
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}
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/// The type of fault log whose entries are `HoneyBadger` faults.
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pub type FaultLog<N> = fault_log::FaultLog<N, FaultKind>;
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