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passes 3d; changes io to use channels.

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This commit is contained in:
Joe Ardent 2024-05-22 15:24:19 -07:00
parent 28e6e76008
commit f092e0f9e4
6 changed files with 273 additions and 110 deletions
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66
Cargo.lock generated
View file

@ -2,11 +2,29 @@
# It is not intended for manual editing.
version = 3
[[package]]
name = "cfg-if"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
[[package]]
name = "getrandom"
version = "0.2.15"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c4567c8db10ae91089c99af84c68c38da3ec2f087c3f82960bcdbf3656b6f4d7"
dependencies = [
"cfg-if",
"libc",
"wasi",
]
[[package]]
name = "gg-broadcast"
version = "0.0.1"
dependencies = [
"nebkor-maelstrom",
"rand",
"serde_json",
]
@ -32,6 +50,12 @@ version = "1.0.11"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "49f1f14873335454500d59611f1cf4a4b0f786f9ac11f4312a78e4cf2566695b"
[[package]]
name = "libc"
version = "0.2.155"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "97b3888a4aecf77e811145cadf6eef5901f4782c53886191b2f693f24761847c"
[[package]]
name = "nebkor-maelstrom"
version = "0.0.1"
@ -41,6 +65,12 @@ dependencies = [
"serde_repr",
]
[[package]]
name = "ppv-lite86"
version = "0.2.17"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
[[package]]
name = "proc-macro2"
version = "1.0.83"
@ -59,6 +89,36 @@ dependencies = [
"proc-macro2",
]
[[package]]
name = "rand"
version = "0.8.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
dependencies = [
"libc",
"rand_chacha",
"rand_core",
]
[[package]]
name = "rand_chacha"
version = "0.3.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
dependencies = [
"ppv-lite86",
"rand_core",
]
[[package]]
name = "rand_core"
version = "0.6.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
dependencies = [
"getrandom",
]
[[package]]
name = "ryu"
version = "1.0.18"
@ -123,3 +183,9 @@ name = "unicode-ident"
version = "1.0.12"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
[[package]]
name = "wasi"
version = "0.11.0+wasi-snapshot-preview1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"

1
gg-broadcast/Cargo.toml
View file

@ -8,3 +8,4 @@ license-file.workspace = true
[dependencies]
serde_json.workspace = true
nebkor-maelstrom = { path = "../nebkor-maelstrom" }
rand = "0.8.5"

168
gg-broadcast/src/main.rs
View file

@ -1,83 +1,131 @@
use std::{collections::HashMap, rc::Rc, sync::Mutex};
use std::{
collections::{HashMap, HashSet},
io::BufRead,
sync::{mpsc::channel, Arc, Mutex},
thread,
time::Duration,
};
use nebkor_maelstrom::{protocol::Payload, Body, Message, Node, Runner};
use rand::Rng;
fn main() {
let out = std::io::stdout().lock();
let input = std::io::stdin().lock();
let out = std::io::stdout();
let std_in = Arc::new(std::io::stdin());
let (tx, rx) = channel();
let input = tx.clone();
let i = thread::spawn(move || {
let g = std_in.lock();
for line in g.lines().map_while(Result::ok) {
if let Ok(msg) = serde_json::from_str::<Message>(&line) {
input.send(msg).unwrap();
}
}
});
let node = BCaster::default();
let node = Rc::new(Mutex::new(node));
let node = Arc::new(Mutex::new(node));
let runner = Runner::new(out, node);
let runner = Runner::new(node, out);
let runner = &runner;
runner.run(input);
let g = thread::spawn(move || loop {
let millis = rand::thread_rng().gen_range(120..=180);
thread::sleep(Duration::from_millis(millis));
let body = Body::from_type("do_gossip");
let msg = Message {
body,
..Default::default()
};
tx.send(msg).unwrap();
});
runner.run(rx);
let _ = i.join();
let _ = g.join();
}
type Store = HashMap<String, i64>;
type Gossips = HashMap<u64, Message>;
#[derive(Clone, Default)]
struct BCaster {
pub store: Store,
pub gossips: Gossips,
store: HashSet<i64>,
gossips: HashMap<String, HashSet<i64>>,
neighbors: HashSet<String>,
}
const NUM_NEIGHBORS: i32 = 5;
impl BCaster {
fn topology(&mut self, nodes: &[String], id: &str) {
let mut nodes = nodes.to_vec();
let len = nodes.len();
nodes.sort_unstable();
let idx = nodes
.iter()
.enumerate()
.find(|n| n.1.as_str() == id)
.unwrap()
.0;
for i in 1..=NUM_NEIGHBORS {
let ni = idx as i32 - i;
let left = if ni < 0 {
let ni = -ni;
let ni = ni as usize % len;
len - ni
} else {
ni as usize
};
let right = (idx + i as usize) % len;
self.neighbors.insert(nodes[left].clone());
self.neighbors.insert(nodes[right].clone());
}
}
fn gossip(&self, runner: &Runner) {
let mut rng = rand::thread_rng();
let rng = &mut rng;
for node in self.neighbors.iter() {
let mut goss = if let Some(neighbor) = self.gossips.get(node) {
self.store.difference(neighbor).cloned().collect()
} else {
self.store.clone()
};
for v in self.store.iter().filter(|_| rng.gen_bool(0.11)) {
goss.insert(*v);
}
if !goss.is_empty() {
let goss: Vec<_> = goss.into_iter().collect();
let payload: Payload = [("goss".to_string(), goss.into())].into_iter().collect();
let body = Body::from_type("gossip").with_payload(payload);
runner.send(node, body);
}
}
}
}
impl Node for BCaster {
fn handle(&mut self, runner: &Runner, req: &Message) {
let typ = req.body.typ.as_str();
let frm = req.src.as_str();
let mid = req.body.msg_id;
let nid = runner.node_id();
let nid = nid.as_str();
let key = format!("{frm}-{mid}");
let key = key.as_str();
{
for (_, gossip) in self.gossips.iter() {
runner.send(gossip.clone());
}
}
match typ {
"gossip_ok" => {
let id = req.body.in_reply_to;
self.gossips.remove(&id);
"do_gossip" => {
self.gossip(runner);
}
"broadcast" => {
let val = req.body.payload.get("message").and_then(|v| v.as_i64());
if let Some(val) = val {
{
// there's only one thread, safe to unwrap
self.store.entry(key.to_owned()).or_insert(val);
}
let extra: Payload = [
("key".to_string(), key.into()),
("val".to_string(), val.into()),
]
.into_iter()
.collect();
let gossip = Body::from_type("gossip").with_payload(extra);
for node in runner.nodes().iter().filter(|n| n.as_str() != nid) {
let id = runner.next_msg_id();
let gossip = gossip.clone().with_msg_id(id);
let msg = Message {
body: gossip,
src: nid.to_string(),
dest: node.to_string(),
};
self.gossips.insert(id, msg.clone());
runner.send(msg);
}
self.store.insert(val);
let body = Body::from_type("broadcast_ok");
runner.reply(req, body);
}
}
"read" => {
let vals = self.store.values().cloned().collect::<Vec<_>>();
let vals = self.store.iter().copied().collect::<Vec<_>>();
let payload: Payload = [("messages".to_string(), vals.into())]
.into_iter()
.collect();
@ -86,17 +134,29 @@ impl Node for BCaster {
runner.reply(req, body);
}
"topology" => {
self.topology(runner.nodes(), nid);
let body = Body::from_type("topology_ok");
runner.reply(req, body);
}
"gossip" => {
let key = req.body.payload.get("key").unwrap().as_str().unwrap();
let val = req.body.payload.get("val").unwrap().as_i64().unwrap();
let goss = req
.body
.payload
.get("goss")
.unwrap()
.as_array()
.unwrap()
.iter()
.map(|v| v.as_i64().unwrap())
.collect::<HashSet<_>>();
self.store.entry(key.to_string()).or_insert(val);
let body = Body::from_type("gossip_ok");
runner.reply(req, body);
self.store.extend(goss.clone());
self.gossips
.entry(frm.to_string())
.or_default()
.extend(goss);
}
_ => {
eprintln!("unknown type: {req:?}");
}

38
gg-echo/src/main.rs
View file

@ -1,4 +1,8 @@
use std::{rc::Rc, sync::Mutex};
use std::{
io::BufRead,
sync::{mpsc::channel, Arc, Mutex},
thread,
};
use nebkor_maelstrom::{Body, Message, Node, Runner};
@ -7,24 +11,34 @@ struct Echo;
impl Node for Echo {
fn handle(&mut self, runner: &Runner, msg: &Message) {
let typ = &msg.body.typ;
match typ.as_str() {
"echo" => {
let body = Body::from_type("echo_ok").with_payload(msg.body.payload.clone());
runner.reply(&msg, body);
}
_ => {}
if typ.as_str() == "echo" {
let body = Body::from_type("echo_ok").with_payload(msg.body.payload.clone());
runner.reply(msg, body);
}
}
}
fn main() {
let out = std::io::stdout().lock();
let input = std::io::stdin().lock();
let out = std::io::stdout();
let std_in = Arc::new(std::io::stdin());
let (tx, rx) = channel();
let i = thread::spawn(move || {
let g = std_in.lock();
for line in g.lines().map_while(Result::ok) {
if let Ok(msg) = serde_json::from_str::<Message>(&line) {
tx.send(msg).unwrap();
}
}
});
let node = Echo;
let node = Rc::new(Mutex::new(node));
let runner = Runner::new(out, node);
let node = Arc::new(Mutex::new(node));
runner.run(input);
let runner = Runner::new(node, out);
runner.run(rx);
i.join().unwrap();
}

28
gg-uid/src/main.rs
View file

@ -1,17 +1,33 @@
use std::{rc::Rc, sync::Mutex};
use std::{
io::BufRead,
sync::{mpsc::channel, Arc, Mutex},
thread,
};
use nebkor_maelstrom::{protocol::Payload, Body, Message, Node, Runner};
fn main() {
let out = std::io::stdout().lock();
let input = std::io::stdin().lock();
let out = std::io::stdout();
let std_in = Arc::new(std::io::stdin());
let (tx, rx) = channel();
let i = thread::spawn(move || {
let g = std_in.lock();
for line in g.lines().map_while(Result::ok) {
if let Ok(msg) = serde_json::from_str::<Message>(&line) {
tx.send(msg).unwrap();
}
}
});
let node = GenUid;
let node = Rc::new(Mutex::new(node));
let node = Arc::new(Mutex::new(node));
let runner = Runner::new(out, node);
let runner = Runner::new(node, out);
runner.run(input);
runner.run(rx);
i.join().unwrap();
}
#[derive(Clone, Default)]

82
nebkor-maelstrom/src/lib.rs
View file

@ -1,57 +1,53 @@
use std::{
cell::OnceCell,
io::{BufRead, StdinLock, StdoutLock, Write},
rc::Rc,
io::{Stdout, Write},
sync::{
atomic::{AtomicU64, Ordering},
Mutex,
atomic::{AtomicU64, AtomicUsize, Ordering},
Arc, Mutex, OnceLock,
},
};
pub mod protocol;
pub use protocol::{Body, Message};
pub type DynNode = Rc<Mutex<dyn Node>>;
pub type DynNode = Arc<Mutex<dyn Node>>;
pub trait Node {
fn handle(&mut self, runner: &Runner, msg: &Message);
}
pub struct Runner<'io> {
pub struct Runner {
msg_id: AtomicU64,
node: DynNode,
node_id: OnceCell<String>,
nodes: OnceCell<Vec<String>>,
output: Mutex<StdoutLock<'io>>,
steps: AtomicU64,
node_id: OnceLock<String>,
nodes: OnceLock<Vec<String>>,
steps: AtomicUsize,
output: Arc<Mutex<Stdout>>,
}
impl<'io> Runner<'io> {
pub fn new(output: StdoutLock<'io>, node: DynNode) -> Self {
impl Runner {
pub fn new(node: DynNode, output: Stdout) -> Self {
Runner {
output: Mutex::new(output),
node,
msg_id: AtomicU64::new(1),
nodes: OnceCell::new(),
node_id: OnceCell::new(),
steps: AtomicU64::new(0),
nodes: OnceLock::new(),
node_id: OnceLock::new(),
steps: AtomicUsize::new(0),
output: Arc::new(Mutex::new(output)),
}
}
pub fn run(&self, input: StdinLock) {
for line in input.lines().map_while(Result::ok) {
if let Ok(msg) = serde_json::from_str::<Message>(&line) {
let typ = &msg.body.typ;
if let "init" = typ.as_str() {
self.init(&msg);
let body = Body::from_type("init_ok");
self.reply(&msg, body);
} else {
let mut n = self.node.lock().unwrap();
n.handle(self, &msg);
}
}
pub fn run(&self, input: std::sync::mpsc::Receiver<Message>) {
for msg in input.iter() {
self.steps.fetch_add(1, Ordering::SeqCst);
let typ = &msg.body.typ;
if let "init" = typ.as_str() {
self.init(&msg);
let body = Body::from_type("init_ok");
self.reply(&msg, body);
} else {
let mut n = self.node.lock().unwrap();
n.handle(self, &msg);
}
}
}
@ -63,10 +59,18 @@ impl<'io> Runner<'io> {
self.msg_id.fetch_add(1, Ordering::SeqCst)
}
pub fn cur_msg_id(&self) -> u64 {
self.msg_id.load(Ordering::SeqCst)
}
pub fn nodes(&self) -> &[String] {
self.nodes.get().unwrap()
}
pub fn steps(&self) -> usize {
self.steps.load(Ordering::SeqCst)
}
pub fn init(&self, msg: &Message) {
let node_id = msg
.body
@ -94,20 +98,22 @@ impl<'io> Runner<'io> {
pub fn reply(&self, req: &Message, body: Body) {
let mut body = body;
let src = self.node_id.get().unwrap().to_owned();
let dest = req.src.clone();
let in_reply_to = req.body.msg_id;
body.in_reply_to = in_reply_to;
let msg = Message { src, dest, body };
self.send(msg);
self.send(&dest, body);
}
pub fn send(&self, msg: Message) {
let mut msg = msg;
if msg.body.msg_id == 0 {
let mid = self.next_msg_id();
msg.body.msg_id = mid;
pub fn send(&self, dest: &str, body: Body) {
let mut body = body;
if body.msg_id == 0 {
body.msg_id = self.next_msg_id();
}
let msg = Message {
src: self.node_id().to_string(),
dest: dest.to_string(),
body,
};
let msg = serde_json::to_string(&msg).unwrap();
self.writeln(&msg);
}