nfs3_client 0.9.0

Provides an implementation of NFS3 client
Documentation 
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use std::error::Error as StdError;
use std::fmt;

use super::{MountError, PortmapError};

/// Error when establishing an NFS3 connection.
///
/// Returned by [`Nfs3ConnectionBuilder::mount`](crate::Nfs3ConnectionBuilder::mount).
#[derive(Debug)]
pub enum ConnectError {
    /// An I/O error occurred when connecting to a port.
    Io(std::io::Error),
    /// A portmapper operation failed.
    Portmap(PortmapError),
    /// The mount operation failed.
    Mount(MountError),
}

impl fmt::Display for ConnectError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            Self::Io(e) => e.fmt(f),
            Self::Portmap(e) => e.fmt(f),
            Self::Mount(e) => e.fmt(f),
        }
    }
}

impl StdError for ConnectError {
    fn source(&self) -> Option<&(dyn StdError + 'static)> {
        match self {
            Self::Io(e) => Some(e),
            Self::Portmap(e) => Some(e),
            Self::Mount(e) => Some(e),
        }
    }
}

impl From<std::io::Error> for ConnectError {
    fn from(e: std::io::Error) -> Self {
        Self::Io(e)
    }
}

impl From<PortmapError> for ConnectError {
    fn from(e: PortmapError) -> Self {
        Self::Portmap(e)
    }
}

impl From<MountError> for ConnectError {
    fn from(e: MountError) -> Self {
        Self::Mount(e)
    }
}

impl ConnectError {
    /// Returns `true` if the connection that produced this error is still in
    /// a clean state and may be reused.
    #[must_use]
    pub const fn is_connection_reusable(&self) -> bool {
        match self {
            Self::Io(_) => false,
            Self::Portmap(e) => e.is_connection_reusable(),
            Self::Mount(e) => e.is_connection_reusable(),
        }
    }
}