use workspace, prepare for config server and gui (#48)

easytier/src/common/error.rs

@@ -0,0 +1,45 @@
+use std::{io, result};
+
+use thiserror::Error;
+
+use crate::tunnels;
+
+use super::PeerId;
+
+#[derive(Error, Debug)]
+pub enum Error {
+    #[error("io error")]
+    IOError(#[from] io::Error),
+    #[error("rust tun error {0}")]
+    TunError(#[from] tun::Error),
+    #[error("tunnel error {0}")]
+    TunnelError(#[from] tunnels::TunnelError),
+    #[error("Peer has no conn, PeerId: {0}")]
+    PeerNoConnectionError(PeerId),
+    #[error("RouteError: {0:?}")]
+    RouteError(Option<String>),
+    #[error("Not found")]
+    NotFound,
+    #[error("Invalid Url: {0}")]
+    InvalidUrl(String),
+    #[error("Shell Command error: {0}")]
+    ShellCommandError(String),
+    // #[error("Rpc listen error: {0}")]
+    // RpcListenError(String),
+    #[error("Rpc connect error: {0}")]
+    RpcConnectError(String),
+    #[error("Rpc error: {0}")]
+    RpcClientError(#[from] tarpc::client::RpcError),
+    #[error("Timeout error: {0}")]
+    Timeout(#[from] tokio::time::error::Elapsed),
+    #[error("url in blacklist")]
+    UrlInBlacklist,
+    #[error("unknown data store error")]
+    Unknown,
+    #[error("anyhow error: {0}")]
+    AnyhowError(#[from] anyhow::Error),
+}
+
+pub type Result<T> = result::Result<T, Error>;
+
+// impl From for std::