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@arjunsk
Created May 6, 2022 18:25
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use crate::{Connection, Frame};
use tracing::{debug, instrument};
/// Represents an "unknown" command. This is not a real `Redis` command.
#[derive(Debug)]
pub struct Unknown {
command_name: String,
}
impl Unknown {
/// Create a new `Unknown` command which responds to unknown commands
/// issued by clients
pub(crate) fn new(key: impl ToString) -> Unknown {
Unknown {
command_name: key.to_string(),
}
}
/// Returns the command name
pub(crate) fn get_name(&self) -> &str {
&self.command_name
}
/// Responds to the client, indicating the command is not recognized.
///
/// This usually means the command is not yet implemented by `mini-redis`.
#[instrument(skip(self, dst))]
pub(crate) async fn apply(self, dst: &mut Connection) -> crate::Result<()> {
let response = Frame::Error(format!("ERR unknown command '{}'", self.command_name));
debug!(?response);
dst.write_frame(&response).await?;
Ok(())
}
}
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