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pezkuwi-subxt/substrate/primitives/transaction-pool/src/error.rs
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2020-05-15 13:21:56 +02:00

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Rust

// This file is part of Substrate.
// Copyright (C) 2018-2020 Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: Apache-2.0
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//! Transaction pool errors.
use sp_runtime::transaction_validity::{
TransactionPriority as Priority, InvalidTransaction, UnknownTransaction,
};
/// Transaction pool result.
pub type Result<T> = std::result::Result<T, Error>;
/// Transaction pool error type.
#[derive(Debug, derive_more::Display, derive_more::From)]
pub enum Error {
/// Transaction is not verifiable yet, but might be in the future.
#[display(fmt="Unknown transaction validity: {:?}", _0)]
UnknownTransaction(UnknownTransaction),
/// Transaction is invalid.
#[display(fmt="Invalid transaction validity: {:?}", _0)]
InvalidTransaction(InvalidTransaction),
/// The transaction validity returned no "provides" tag.
///
/// Such transactions are not accepted to the pool, since we use those tags
/// to define identity of transactions (occupance of the same "slot").
#[display(fmt="The transaction does not provide any tags, so the pool can't identify it.")]
NoTagsProvided,
/// The transaction is temporarily banned.
#[display(fmt="Temporarily Banned")]
TemporarilyBanned,
/// The transaction is already in the pool.
#[display(fmt="[{:?}] Already imported", _0)]
AlreadyImported(Box<dyn std::any::Any + Send>),
/// The transaction cannot be imported cause it's a replacement and has too low priority.
#[display(fmt="Too low priority ({} > {})", old, new)]
TooLowPriority {
/// Transaction already in the pool.
old: Priority,
/// Transaction entering the pool.
new: Priority
},
/// Deps cycle detected and we couldn't import transaction.
#[display(fmt="Cycle Detected")]
CycleDetected,
/// Transaction was dropped immediately after it got inserted.
#[display(fmt="Transaction couldn't enter the pool because of the limit.")]
ImmediatelyDropped,
/// Invalid block id.
InvalidBlockId(String),
/// The pool is not accepting future transactions.
#[display(fmt="The pool is not accepting future transactions")]
RejectedFutureTransaction,
}
impl std::error::Error for Error {}
/// Transaction pool error conversion.
pub trait IntoPoolError: std::error::Error + Send + Sized {
/// Try to extract original `Error`
///
/// This implementation is optional and used only to
/// provide more descriptive error messages for end users
/// of RPC API.
fn into_pool_error(self) -> std::result::Result<Error, Self> { Err(self) }
}
impl IntoPoolError for Error {
fn into_pool_error(self) -> std::result::Result<Error, Self> { Ok(self) }
}