distributed-fs/src/bin/data_node.rs

81 lines
2.6 KiB
Rust

extern crate a03;
extern crate serde;
extern crate serde_json;
#[macro_use]
extern crate serde_derive;
use a03::*;
use std::net::{TcpStream, Shutdown};
use std::thread;
use std::io::Read;
use std::io::Write;
use std::net::TcpListener;
use std::fs::File;
fn main() {
// register_with_meta_server();
let listener = TcpListener::bind("localhost:6771").unwrap();
for stream in listener.incoming() {
let mut stream = stream.unwrap();
let mut buf = Vec::new();
match stream.read_to_end(&mut buf) {
Ok(size) => {
println!("Total bytes: {}", size);
let mut copy = File::create("new_version").unwrap();
copy.write_all(&buf[..]).unwrap();
},
Err(e) => println!("{}", e),
}
// match serde_json::from_reader(&mut stream) {
// Ok(packet @ Packet { .. }) => match packet.p_type {
// PacketType::GetFiles => shutdown(&mut stream),
// PacketType::PutFiles => put(&mut stream, &packet.json.unwrap(), &mut Vec::new()),
// PacketType::ShutdownDataNode => shutdown(&mut stream),
// _ => (),
// },
// Err(e) => println!("Error parsing json {}", e.to_string()),
// };
}
}
fn register_with_meta_server() {
let mut stream = TcpStream::connect("localhost:6770").unwrap();
serde_json::to_writer(
&mut stream,
&Packet {
p_type: PacketType::NodeRegistration,
json: Some(serde_json::to_string(
&NodeRegistration { register: true, ip: String::from("localhost"), port: 6770 }).unwrap()),
})
.unwrap();
println!("Registered myself");
stream.flush().unwrap();
stream.shutdown(Shutdown::Write).unwrap();
let result: Packet = serde_json::from_reader(&mut stream).unwrap();
println!("{:?}", result);
}
fn put(stream: &mut TcpStream, json: &String, files: &mut Vec<String>) {
let files: PutFiles = serde_json::from_str(json).unwrap();
}
fn shutdown(stream: &mut TcpStream) {
let mut stream = TcpStream::connect("localhost:6770").unwrap();
serde_json::to_writer(
&mut stream,
&Packet {
p_type: PacketType::NodeRegistration,
json: Some(serde_json::to_string(
&NodeRegistration { register: false, ip: String::from("localhost"), port: 6770 }).unwrap()),
})
.unwrap();
println!("Unregistered myself");
stream.flush().unwrap();
stream.shutdown(Shutdown::Write).unwrap();
let result: Packet = serde_json::from_reader(&mut stream).unwrap();
println!("{:?}", result);
std::process::exit(0);
}