use an off-the-shelf crate for maelstrom node.
The echo server is basically copied from the example for the crate, but it's nothing special.
This commit is contained in:
Joe Ardent
parent
98412c147b
commit
4fecd6cc9a
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@ -1 +1,2 @@
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target/
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store/
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@ -1,109 +0,0 @@
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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version = 3
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[[package]]
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name = "gg-echo"
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version = "0.0.1"
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[[package]]
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name = "itoa"
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version = "1.0.11"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "49f1f14873335454500d59611f1cf4a4b0f786f9ac11f4312a78e4cf2566695b"
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[[package]]
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name = "maelstrom-node"
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version = "0.0.1"
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[[package]]
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name = "maelstrom-protocol"
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version = "0.0.1"
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dependencies = [
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"serde",
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"serde_json",
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"serde_repr",
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]
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[[package]]
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name = "proc-macro2"
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version = "1.0.82"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8ad3d49ab951a01fbaafe34f2ec74122942fe18a3f9814c3268f1bb72042131b"
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dependencies = [
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"unicode-ident",
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]
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[[package]]
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name = "quote"
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version = "1.0.36"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "0fa76aaf39101c457836aec0ce2316dbdc3ab723cdda1c6bd4e6ad4208acaca7"
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dependencies = [
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"proc-macro2",
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]
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[[package]]
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name = "ryu"
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version = "1.0.18"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f3cb5ba0dc43242ce17de99c180e96db90b235b8a9fdc9543c96d2209116bd9f"
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[[package]]
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name = "serde"
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version = "1.0.202"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "226b61a0d411b2ba5ff6d7f73a476ac4f8bb900373459cd00fab8512828ba395"
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dependencies = [
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"serde_derive",
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]
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[[package]]
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name = "serde_derive"
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version = "1.0.202"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "6048858004bcff69094cd972ed40a32500f153bd3be9f716b2eed2e8217c4838"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn",
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]
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[[package]]
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name = "serde_json"
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version = "1.0.117"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "455182ea6142b14f93f4bc5320a2b31c1f266b66a4a5c858b013302a5d8cbfc3"
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dependencies = [
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"itoa",
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"ryu",
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"serde",
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]
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[[package]]
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name = "serde_repr"
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version = "0.1.19"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "6c64451ba24fc7a6a2d60fc75dd9c83c90903b19028d4eff35e88fc1e86564e9"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn",
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]
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[[package]]
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name = "syn"
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version = "2.0.64"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7ad3dee41f36859875573074334c200d1add8e4a87bb37113ebd31d926b7b11f"
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dependencies = [
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"proc-macro2",
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"quote",
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"unicode-ident",
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]
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[[package]]
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name = "unicode-ident"
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version = "1.0.12"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
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@ -1,5 +1,5 @@
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[workspace]
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members = ["gg-echo", "maelstrom-protocol", "maelstrom-node"]
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members = ["gg-echo"]
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resolver = "2"
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[workspace.package]
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@ -1,8 +1 @@
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Working through the [Fly.io distributed systems challenge](https://fly.io/dist-sys/), in Rust.
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The project is organized as a Cargo workspace. The `maelstrom-*` crates are libraries that provide
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the equivalent functionality as the [Maelstrom
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Go](https://pkg.go.dev/github.com/jepsen-io/maelstrom/demo/go) package that is provided by
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Fly.io. The protocol crate especially is stand-alone and just provides the
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serializable/deserializable Rust types for Maelstrom messages. The node crate handles IO, while the
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`gg-*` crates are bin crates that implement the named challenge.
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@ -5,3 +5,6 @@ version.workspace = true
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authors.workspace = true
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[dependencies]
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async-trait = "0.1.80"
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maelstrom-node = "0.1.6"
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tokio = { version = "1.37.0", default-features = false, features = ["io-util", "io-std", "rt-multi-thread", "macros"] }
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@ -1,3 +1,29 @@
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fn main() {
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println!("Hello, world!");
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use async_trait::async_trait;
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use maelstrom::protocol::Message;
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use maelstrom::{done, Node, Result, Runtime};
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use std::sync::Arc;
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#[tokio::main]
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async fn main() {
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let handler = Arc::new(Handler::default());
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let _ = Runtime::new()
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.with_handler(handler)
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.run()
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.await
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.unwrap_or_default();
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}
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#[derive(Clone, Default)]
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struct Handler {}
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#[async_trait]
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impl Node for Handler {
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async fn process(&self, runtime: Runtime, req: Message) -> Result<()> {
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if req.get_type() == "echo" {
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let echo = req.body.clone().with_type("echo_ok");
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return runtime.reply(req, echo).await;
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}
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done(runtime, req)
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}
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}
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@ -1,7 +0,0 @@
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[package]
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name = "maelstrom-node"
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edition = "2021"
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version.workspace = true
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authors.workspace = true
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[dependencies]
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@ -1,14 +0,0 @@
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pub fn add(left: usize, right: usize) -> usize {
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left + right
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn it_works() {
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let result = add(2, 2);
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assert_eq!(result, 4);
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}
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}
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@ -1,10 +0,0 @@
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[package]
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name = "maelstrom-protocol"
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edition = "2021"
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version.workspace = true
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authors.workspace = true
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[dependencies]
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serde = { version = "1", default-features = false, features = ["derive"] }
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serde_json = { version = "1", default-features = false, features = ["std"] }
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serde_repr = "0.1"
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@ -1,113 +0,0 @@
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use serde::{Deserialize, Serialize};
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use serde_repr::{Deserialize_repr, Serialize_repr};
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#[derive(Debug, Clone, Serialize, Deserialize)]
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pub struct Message<P> {
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src: String,
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dest: String,
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body: Body<P>,
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}
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#[derive(Debug, Clone, Serialize, Deserialize)]
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pub struct Body<P> {
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#[serde(rename = "type")]
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pub typ: String,
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#[serde(skip_serializing_if = "Option::is_none")]
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pub msg_id: Option<u64>,
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#[serde(skip_serializing_if = "Option::is_none")]
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pub in_reply_to: Option<u64>,
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#[serde(flatten)]
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pub payload: P,
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}
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#[derive(Debug, Clone, Serialize, Deserialize)]
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#[serde(untagged)]
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pub enum ErrorCode {
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Definite(DefiniteError),
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Indefinite(IndefiniteError),
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}
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#[derive(Debug, Clone, Serialize_repr, Deserialize_repr)]
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#[repr(u64)]
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pub enum DefiniteError {
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NodeNotFound = 2,
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NotSupported = 10,
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TemporarilyUnavailable = 11,
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MalformedRequest = 12,
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Abort = 14,
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KeyNotFound = 20,
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KeyAlreadyExists = 21,
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PreconditionFailed = 22,
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TxnConflict = 30,
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}
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#[derive(Debug, Clone, Serialize_repr, Deserialize_repr)]
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#[repr(u64)]
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pub enum IndefiniteError {
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Timeout = 0,
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Crash = 13,
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}
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pub fn init_ok(msg_id: u64, in_reply_to: Option<u64>) -> Body<payloads::InitOk> {
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Body {
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typ: "init_ok".to_string(),
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msg_id: Some(msg_id),
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in_reply_to,
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payload: payloads::InitOk,
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}
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}
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pub fn error(
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msg_id: u64,
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in_reply_to: Option<u64>,
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code: ErrorCode,
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text: Option<&str>,
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) -> Body<payloads::ErrorResp> {
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Body {
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typ: "error".to_string(),
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msg_id: Some(msg_id),
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in_reply_to,
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payload: payloads::ErrorResp {
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code,
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text: text.map(|s| s.to_string()),
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},
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}
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}
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pub mod payloads {
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use crate::ErrorCode;
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use serde::{de::DeserializeOwned, Deserialize, Serialize};
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pub trait Payload:
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std::fmt::Debug + Sized + Send + Clone + Serialize + DeserializeOwned
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{
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}
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impl<T> Payload for T where T: std::fmt::Debug + Sized + Send + Clone + Serialize + DeserializeOwned {}
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#[derive(Debug, Clone, Serialize, Deserialize)]
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pub struct Init {
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pub node_id: String,
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pub node_ids: Vec<String>,
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}
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#[derive(Debug, Clone, Serialize, Deserialize)]
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pub struct InitOk;
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#[derive(Debug, Clone, Serialize, Deserialize)]
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pub struct ErrorResp {
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pub code: ErrorCode,
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pub text: Option<String>,
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}
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}
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#[cfg(test)]
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mod test {
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use super::*;
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#[test]
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fn error_codes() {
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let ec = ErrorCode::Definite(DefiniteError::Abort);
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let e = serde_json::to_string(&ec).unwrap();
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assert_eq!(&e, "14");
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}
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}
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Loading…
Reference in New Issue