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use std::io;
use std::error;
use std::fmt;
use protobuf;
#[derive(Debug)]
pub struct ServerError {
code: u8,
data: Vec<u8>,
}
impl ServerError {
pub fn new(error_code: u8, error_data: Vec<u8>) -> ServerError {
ServerError {
code: error_code,
data: error_data,
}
}
}
impl error::Error for ServerError {
fn description(&self) -> &str {
"a server error occurred"
}
}
impl fmt::Display for ServerError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f,
"received code {}, error was: {}",
self.code,
String::from_utf8_lossy(self.data.as_slice()))
}
}
#[derive(Debug)]
pub enum RiakErr {
IoError(io::Error),
ProtobufError(protobuf::ProtobufError),
ServerError(ServerError),
}
impl fmt::Display for RiakErr {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
RiakErr::IoError(ref err) => write!(f, "error pinging riak: {}", err),
RiakErr::ProtobufError(ref err) => write!(f, "connection to riak terminated: {}", err),
RiakErr::ServerError(ref err) => write!(f, "error from server: {}", err),
}
}
}
impl error::Error for RiakErr {
fn description(&self) -> &str {
match *self {
RiakErr::IoError(ref err) => err.description(),
RiakErr::ProtobufError(ref err) => err.description(),
RiakErr::ServerError(ref err) => err.description(),
}
}
fn cause(&self) -> Option<&error::Error> {
match *self {
RiakErr::IoError(ref err) => Some(err),
RiakErr::ProtobufError(ref err) => Some(err),
RiakErr::ServerError(ref err) => Some(err),
}
}
}