87 lines
2.2 KiB
Rust
87 lines
2.2 KiB
Rust
// Copyright 2015-2017 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
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// Parity 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 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. If not, see <http://www.gnu.org/licenses/>.
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use {multihash, cid, hyper};
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use handler::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(hyper::error::Error),
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}
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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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}
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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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}
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}
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}
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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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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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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<hyper::error::Error> for ServerError {
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fn from(err: 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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}
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}
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}
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