109 lines
3.1 KiB
Rust
109 lines
3.1 KiB
Rust
// Copyright 2015-2019 Parity Technologies (UK) Ltd.
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// This file is part of Parity Ethereum.
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// Parity Ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity Ethereum is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity Ethereum. If not, see <http://www.gnu.org/licenses/>.
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use crate::route::Out;
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pub type Result<T> = std::result::Result<T, Error>;
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/// IPFS server error
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#[derive(Debug)]
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pub enum ServerError {
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/// Wrapped `std::io::Error`
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IoError(std::io::Error),
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/// Other `hyper` error
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Other(http::hyper::error::Error),
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/// Invalid --ipfs-api-interface
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InvalidInterface
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}
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/// Handle IO errors (ports taken when starting the server).
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impl From<std::io::Error> for ServerError {
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fn from(err: std::io::Error) -> ServerError {
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ServerError::IoError(err)
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}
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}
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impl From<http::hyper::error::Error> for ServerError {
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fn from(err: http::hyper::error::Error) -> ServerError {
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ServerError::Other(err)
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}
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}
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impl From<ServerError> for String {
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fn from(err: ServerError) -> String {
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match err {
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ServerError::IoError(err) => err.to_string(),
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ServerError::Other(err) => err.to_string(),
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ServerError::InvalidInterface => "Invalid --ipfs-api-interface parameter".into(),
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}
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}
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}
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impl std::fmt::Display for ServerError {
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fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
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match self {
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ServerError::IoError(err) => write!(f, "Io Error: {}", err),
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ServerError::Other(err) => write!(f, "Other error: {}", err),
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ServerError::InvalidInterface => write!(f, "Invalid interface"),
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}
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}
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}
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impl std::error::Error for ServerError {}
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#[derive(Debug, PartialEq)]
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pub enum Error {
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CidParsingFailed,
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UnsupportedHash,
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UnsupportedCid,
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BlockNotFound,
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TransactionNotFound,
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StateRootNotFound,
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ContractNotFound,
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}
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/// Convert Error into Out, handy when switching from Rust's Result-based
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/// error handling to Hyper's request handling.
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impl From<Error> for Out {
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fn from(err: Error) -> Out {
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use self::Error::*;
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match err {
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UnsupportedHash => Out::Bad("Hash must be Keccak-256"),
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UnsupportedCid => Out::Bad("CID codec not supported"),
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CidParsingFailed => Out::Bad("CID parsing failed"),
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BlockNotFound => Out::NotFound("Block not found"),
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TransactionNotFound => Out::NotFound("Transaction not found"),
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StateRootNotFound => Out::NotFound("State root not found"),
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ContractNotFound => Out::NotFound("Contract not found"),
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}
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}
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}
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/// Convert Content ID errors.
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impl From<cid::Error> for Error {
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fn from(_: cid::Error) -> Error {
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Error::CidParsingFailed
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}
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}
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/// Convert multihash errors (multihash being part of CID).
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impl From<multihash::Error> for Error {
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fn from(_: multihash::Error) -> Error {
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Error::CidParsingFailed
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}
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}
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