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use std::{self, error, result};
use sp_state_machine;
use sp_runtime::transaction_validity::TransactionValidityError;
use sp_consensus;
use derive_more::{Display, From};
use codec::Error as CodecError;
pub type Result<T> = result::Result<T, Error>;
#[derive(Debug, Display)]
pub enum ApplyExtrinsicFailed {
#[display(fmt = "Extrinsic is not valid: {:?}", _0)]
Validity(TransactionValidityError),
#[display(fmt = "Extrinsic failed: {:?}", _0)]
Msg(String),
}
#[derive(Debug, Display, From)]
pub enum Error {
#[display(fmt = "Consensus: {}", _0)]
Consensus(sp_consensus::Error),
#[display(fmt = "Backend error: {}", _0)]
#[from(ignore)]
Backend(String),
#[display(fmt = "UnknownBlock: {}", _0)]
#[from(ignore)]
UnknownBlock(String),
#[display(fmt = "{:?}", _0)]
ApplyExtrinsicFailed(ApplyExtrinsicFailed),
#[display(fmt = "Execution: {}", _0)]
Execution(Box<dyn sp_state_machine::Error>),
#[display(fmt = "Blockchain: {}", _0)]
Blockchain(Box<Error>),
#[display(fmt = "Current state of blockchain has invalid authorities set")]
InvalidAuthoritiesSet,
#[display(fmt = "Failed to get runtime version: {}", _0)]
#[from(ignore)]
VersionInvalid(String),
#[display(fmt = "Genesis config provided is invalid")]
GenesisInvalid,
#[display(fmt = "error decoding justification for header")]
JustificationDecode,
#[display(fmt = "bad justification for header: {}", _0)]
#[from(ignore)]
BadJustification(String),
#[display(fmt = "This method is not currently available when running in light client mode")]
NotAvailableOnLightClient,
#[display(fmt = "Remote node has responded with invalid header proof")]
InvalidCHTProof,
#[display(fmt = "Remote data fetch has been cancelled")]
RemoteFetchCancelled,
#[display(fmt = "Remote data fetch has been failed")]
RemoteFetchFailed,
#[display(fmt = "Error decoding call result of {}: {}", _0, _1)]
CallResultDecode(&'static str, CodecError),
#[display(fmt = "Error converting `{}` between runtime and node", _0)]
#[from(ignore)]
RuntimeParamConversion(String),
#[display(fmt = "Changes tries are not supported by the runtime")]
ChangesTriesNotSupported,
#[display(fmt = "Error reading changes tries configuration")]
ErrorReadingChangesTriesConfig,
#[display(fmt = "Failed to check changes proof: {}", _0)]
#[from(ignore)]
ChangesTrieAccessFailed(String),
#[display(fmt = "Did not finalize blocks in sequential order.")]
#[from(ignore)]
NonSequentialFinalization(String),
#[display(fmt = "Potential long-range attack: block not in finalized chain.")]
NotInFinalizedChain,
#[display(fmt = "Failed to get hash of block for building CHT")]
MissingHashRequiredForCHT,
#[display(fmt = "Calculated state root does not match.")]
InvalidStateRoot,
#[display(fmt = "Incomplete block import pipeline.")]
IncompletePipeline,
#[display(fmt = "Transaction pool not ready for block production.")]
TransactionPoolNotReady,
#[display(fmt = "Database: {}", _0)]
DatabaseError(sp_database::error::DatabaseError),
#[display(fmt = "{}", _0)]
Msg(String),
}
impl error::Error for Error {
fn source(&self) -> Option<&(dyn error::Error + 'static)> {
match self {
Error::Consensus(e) => Some(e),
Error::Blockchain(e) => Some(e),
_ => None,
}
}
}
impl<'a> From<&'a str> for Error {
fn from(s: &'a str) -> Self {
Error::Msg(s.into())
}
}
impl Error {
pub fn from_blockchain(e: Box<Error>) -> Self {
Error::Blockchain(e)
}
pub fn from_state(e: Box<dyn sp_state_machine::Error>) -> Self {
Error::Execution(e)
}
}