fs-hdfs 0.1.10

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// to you under the Apache License, Version 2.0 (the
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//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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use std::error::Error;
use std::fmt::{Display, Formatter};

/// Errors which can occur during accessing Hdfs cluster
#[derive(Debug)]
pub enum HdfsErr {
    Generic(String),
    /// file path
    FileNotFound(String),
    /// file path           
    FileAlreadyExists(String),
    /// name node address
    CannotConnectToNameNode(String),
    /// URL
    InvalidUrl(String),
}

impl Display for HdfsErr {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        match self {
            HdfsErr::FileNotFound(path) => write!(f, "Hdfs file {} not found", path),
            HdfsErr::FileAlreadyExists(path) => {
                write!(f, "Hdfs file {} already exists", path)
            }
            HdfsErr::InvalidUrl(path) => write!(f, "Hdfs url {} is not valid", path),
            HdfsErr::CannotConnectToNameNode(namenode_uri) => {
                write!(f, "Cannot connect to name node {}", namenode_uri)
            }
            HdfsErr::Generic(err_str) => write!(f, "Generic error with msg: {}", err_str),
        }
    }
}

impl Error for HdfsErr {}