78 lines
2.7 KiB
Rust
78 lines
2.7 KiB
Rust
use crate::channels::ChannelMode;
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/// Sugar if you expect only sonic-channel error type in result
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pub type Result<T> = std::result::Result<T, Error>;
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/// Wrap for sonic channel error kind. This type has std::error::Error
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/// implementation and you can use boxed trait for catch other errors
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/// like this.
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/// All error kinds that you can see in sonic-channel crate.
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#[derive(Debug)]
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pub enum Error {
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/// Cannot connect to the sonic search backend.
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ConnectToServer,
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/// Cannot write message to stream.
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WriteToStream,
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/// Cannot read message in stream.
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ReadStream,
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/// Cannot switch channel mode from uninitialized.
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SwitchMode,
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/// Cannot run command in current mode.
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RunCommand,
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/// Error in query response with additional message.
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QueryResponse(&'static str),
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/// Response from sonic server are wrong! Actually it may happen if you use
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/// unsupported sonic backend version. Please write issue to the github repo.
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WrongResponse,
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/// You cannot run the command in current channel.
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UnsupportedCommand((&'static str, Option<ChannelMode>)),
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/// This error appears if the error occurred on the server side
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SonicServer(String),
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}
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impl std::fmt::Display for Error {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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use Error::*;
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match self {
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ConnectToServer => f.write_str("Cannot connect to server"),
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WriteToStream => f.write_str("Cannot write data to stream"),
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ReadStream => f.write_str("Cannot read sonic response from stream"),
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SwitchMode => f.write_str("Cannot switch channel mode"),
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RunCommand => f.write_str("Cannot run command in current mode"),
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QueryResponse(message) => {
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write!(f, "Error in query response: {}", message)
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}
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WrongResponse => {
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write!(f, "Client cannot parse response from sonic server. Please write an issue to github (https://github.com/pleshevskiy/sonic-channel).")
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}
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UnsupportedCommand((command_name, channel_mode)) => {
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if let Some(channel_mode) = channel_mode {
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write!(
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f,
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"You cannot use `{}` command in {} sonic channel mode",
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command_name, channel_mode
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)
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} else {
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write!(
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f,
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"You need to connect to sonic channel before use {} command",
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command_name
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)
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}
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}
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SonicServer(message) => write!(f, "Sonic Server-side error: {}", message),
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}
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}
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}
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impl std::error::Error for Error {}
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