openethereum/ipfs/src/error.rs
Tomasz Drwięga 7e87e9e8ad Updating JSON-RPC crates (#4934)
* New version of jsonrpc.

* Better invalid encoding messages

* Fixing deprecated methods of tokio_core

* Using dedicated branch for jsonrpc

* Bump
2017-03-22 07:02:14 +01:00

98 lines
2.7 KiB
Rust

// Copyright 2015-2017 Parity Technologies (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
use {multihash, cid, http};
use route::Out;
pub type Result<T> = ::std::result::Result<T, Error>;
/// IPFS server error
#[derive(Debug)]
pub enum ServerError {
/// Wrapped `std::io::Error`
IoError(::std::io::Error),
/// Other `hyper` error
Other(http::hyper::error::Error),
/// Invalid --ipfs-api-interface
InvalidInterface
}
#[derive(Debug, PartialEq)]
pub enum Error {
CidParsingFailed,
UnsupportedHash,
UnsupportedCid,
BlockNotFound,
TransactionNotFound,
StateRootNotFound,
ContractNotFound,
}
/// Convert Error into Out, handy when switching from Rust's Result-based
/// error handling to Hyper's request handling.
impl From<Error> for Out {
fn from(err: Error) -> Out {
use self::Error::*;
match err {
UnsupportedHash => Out::Bad("Hash must be Keccak-256"),
UnsupportedCid => Out::Bad("CID codec not supported"),
CidParsingFailed => Out::Bad("CID parsing failed"),
BlockNotFound => Out::NotFound("Block not found"),
TransactionNotFound => Out::NotFound("Transaction not found"),
StateRootNotFound => Out::NotFound("State root not found"),
ContractNotFound => Out::NotFound("Contract not found"),
}
}
}
/// Convert Content ID errors.
impl From<cid::Error> for Error {
fn from(_: cid::Error) -> Error {
Error::CidParsingFailed
}
}
/// Convert multihash errors (multihash being part of CID).
impl From<multihash::Error> for Error {
fn from(_: multihash::Error) -> Error {
Error::CidParsingFailed
}
}
/// Handle IO errors (ports taken when starting the server).
impl From<::std::io::Error> for ServerError {
fn from(err: ::std::io::Error) -> ServerError {
ServerError::IoError(err)
}
}
impl From<http::hyper::error::Error> for ServerError {
fn from(err: http::hyper::error::Error) -> ServerError {
ServerError::Other(err)
}
}
impl From<ServerError> for String {
fn from(err: ServerError) -> String {
match err {
ServerError::IoError(err) => err.to_string(),
ServerError::Other(err) => err.to_string(),
ServerError::InvalidInterface => "Invalid --ipfs-api-interface parameter".into(),
}
}
}