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use exonum::blockchain::{ExecutionError, StoredConfiguration};
use exonum::crypto::Hash;
use exonum::encoding::serialize::json::reexport::Error as JsonError;
use exonum::helpers::Height;
use transactions::Propose;
#[derive(Debug)]
#[repr(u8)]
pub enum ErrorCode {
AlreadyScheduled = 0,
UnknownSender = 1,
InvalidConfigRef = 2,
ActivationInPast = 3,
AlreadyProposed = 32,
InvalidConfig = 33,
UnknownConfigRef = 64,
AlreadyVoted = 65,
}
#[derive(Debug, Fail)]
pub(crate) enum Error {
#[fail(display = "Next configuration is already scheduled: {:?}", _0)]
AlreadyScheduled(StoredConfiguration),
#[fail(display = "Not authored by a validator")]
UnknownSender,
#[fail(display = "Does not reference actual config {:?}", _0)]
InvalidConfigRef(StoredConfiguration),
#[fail(display = "Current height {:?} greater or equal than `actual_from`", _0)]
ActivationInPast(Height),
#[fail(display = "Already proposed; old proposal: {:?}", _0)]
AlreadyProposed(Propose),
#[fail(display = "Cannot parse configuration: {}", _0)]
InvalidConfig(
#[cause]
JsonError
),
#[fail(display = "Does not reference known config with hash {:?}", _0)]
UnknownConfigRef(Hash),
#[fail(display = "Validator already voted for a referenced proposal")]
AlreadyVoted,
}
impl Error {
fn code(&self) -> ErrorCode {
use self::Error::*;
match *self {
AlreadyScheduled(..) => ErrorCode::AlreadyScheduled,
UnknownSender => ErrorCode::UnknownSender,
InvalidConfigRef(..) => ErrorCode::InvalidConfigRef,
ActivationInPast(..) => ErrorCode::ActivationInPast,
AlreadyProposed(..) => ErrorCode::AlreadyProposed,
InvalidConfig(..) => ErrorCode::InvalidConfig,
UnknownConfigRef(..) => ErrorCode::UnknownConfigRef,
AlreadyVoted => ErrorCode::AlreadyVoted,
}
}
}
impl From<Error> for ExecutionError {
fn from(value: Error) -> ExecutionError {
ExecutionError::new(value.code() as u8)
}
}