use std::sync::Arc;
use std::time::Duration;
use crate::cluster::{Cluster, Node};
use crate::commands::buffer;
use crate::commands::{Command, SingleCommand};
use crate::errors::{ErrorKind, Result};
use crate::net::Connection;
use crate::operations::OperationType;
use crate::policy::WritePolicy;
use crate::{Bin, Key, ResultCode};
pub struct WriteCommand<'a, A: 'a> {
single_command: SingleCommand<'a>,
policy: &'a WritePolicy,
bins: &'a [A],
operation: OperationType,
}
impl<'a, 'b, A: AsRef<Bin<'b>>> WriteCommand<'a, A> {
pub fn new(
policy: &'a WritePolicy,
cluster: Arc<Cluster>,
key: &'a Key,
bins: &'a [A],
operation: OperationType,
) -> Self {
WriteCommand {
single_command: SingleCommand::new(cluster, key),
bins,
policy,
operation,
}
}
pub fn execute(&mut self) -> Result<()> {
SingleCommand::execute(self.policy, self)
}
}
impl<'a, 'b, A: AsRef<Bin<'b>>> Command for WriteCommand<'a, A> {
fn write_timeout(&mut self, conn: &mut Connection, timeout: Option<Duration>) -> Result<()> {
conn.buffer.write_timeout(timeout);
Ok(())
}
fn write_buffer(&mut self, conn: &mut Connection) -> Result<()> {
conn.flush()
}
fn prepare_buffer(&mut self, conn: &mut Connection) -> Result<()> {
conn.buffer.set_write(
self.policy,
self.operation,
self.single_command.key,
self.bins,
)
}
fn get_node(&self) -> Result<Arc<Node>> {
self.single_command.get_node()
}
fn parse_result(&mut self, conn: &mut Connection) -> Result<()> {
if let Err(err) = conn.read_buffer(buffer::MSG_TOTAL_HEADER_SIZE as usize) {
warn!("Parse result error: {}", err);
return Err(err);
}
conn.buffer.reset_offset()?;
let result_code = ResultCode::from(conn.buffer.read_u8(Some(13))?);
if result_code != ResultCode::Ok {
bail!(ErrorKind::ServerError(result_code));
}
SingleCommand::empty_socket(conn)
}
}