52 lines
1.3 KiB
Rust
52 lines
1.3 KiB
Rust
use std::io::Cursor;
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use crate::{Result, connection::Connection, database::Database, errors::AppError};
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use bytes::{Buf as _, Bytes};
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#[derive(Debug, Clone)]
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pub struct Set {
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key: String,
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data: Box<[u8]>,
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expiration: Option<u64>,
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}
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impl Set {
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pub async fn execute(self, db: &Database, connection: &mut Connection) -> Result<()> {
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db.set(self.key, self.data, self.expiration).await?;
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connection.write(Bytes::from_static(&[1])).await?;
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Ok(())
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}
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pub fn parse(bytes: &mut Cursor<&[u8]>) -> Result<Self> {
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let key_length = bytes.try_get_u16()? as usize;
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if bytes.remaining() < key_length {
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return Err(AppError::IncompleteCommandBuffer);
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}
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let key = String::from_utf8(bytes.copy_to_bytes(key_length).to_vec())?;
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let value_length = bytes.try_get_u32()? as usize;
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if bytes.remaining() < value_length {
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return Err(AppError::IncompleteCommandBuffer);
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}
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let data = bytes.copy_to_bytes(value_length);
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let expiration: Option<u64> = match bytes.try_get_u8()? {
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1 => Some(bytes.try_get_u64()?),
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0 => None,
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_ => return Err(AppError::UnexpectedCommandData),
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};
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Ok(Self {
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key,
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data: (*data).into(),
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expiration,
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})
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}
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}
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