76 lines
2.3 KiB
Rust
76 lines
2.3 KiB
Rust
use std::io;
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use std::io::Write;
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use std::net::UdpSocket;
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use vnt::core::Vnt;
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pub struct CommandServer {}
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impl CommandServer {
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pub fn new() -> Self {
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Self {}
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}
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}
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impl CommandServer {
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pub fn start(self, vnt: Vnt) -> io::Result<()> {
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let udp = if let Ok(udp) = UdpSocket::bind("127.0.0.1:39271") {
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udp
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} else {
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UdpSocket::bind("127.0.0.1:0")?
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};
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let addr = udp.local_addr()?;
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log::info!("启动后台cmd:{:?}", addr);
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if let Err(e) = save_port(addr.port()) {
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log::warn!("保存后台命令端口失败：{:?}", e);
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}
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let mut buf = [0u8; 64];
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loop {
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let (len, addr) = udp.recv_from(&mut buf)?;
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match std::str::from_utf8(&buf[..len]) {
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Ok(cmd) => {
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log::info!("收到cmd={:?}", cmd);
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if let Ok(out) = command(cmd, &vnt) {
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if let Err(e) = udp.send_to(out.as_bytes(), addr) {
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log::warn!("cmd={},err={:?}", cmd, e);
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}
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if "stopped" == &out {
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break;
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}
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}
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}
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Err(e) => {
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log::warn!("{:?}", e);
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}
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}
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}
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Ok(())
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}
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}
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fn save_port(port: u16) -> io::Result<()> {
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let path_buf = crate::app_home()?.join("command-port");
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let mut file = std::fs::File::create(path_buf)?;
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file.write_all(port.to_string().as_bytes())?;
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file.sync_all()
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}
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fn command(cmd: &str, vnt: &Vnt) -> io::Result<String> {
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let out_str = match cmd {
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"route" => serde_yaml::to_string(&crate::command::command_route(vnt))
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.unwrap_or_else(|e| format!("error {:?}", e)),
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"list" => serde_yaml::to_string(&crate::command::command_list(vnt))
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.unwrap_or_else(|e| format!("error {:?}", e)),
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"info" => serde_yaml::to_string(&crate::command::command_info(vnt))
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.unwrap_or_else(|e| format!("error {:?}", e)),
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"stop" => {
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vnt.stop();
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"stopped".to_string()
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}
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_ => {
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format!("command '{}' not found. \n Try to enter: 'help'\n", cmd)
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}
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};
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Ok(out_str)
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}
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