Something works

Cargo.lock

@@ -296,6 +296,7 @@ dependencies = [
  "rmp-serde 0.14.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.106 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_bytes 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.51 (registry+https://github.com/rust-lang/crates.io-index)",
  "sha2 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "sled 0.31.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "structopt 0.3.12 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -753,6 +754,11 @@ dependencies = [
  "syn 1.0.17 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "ryu"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "scopeguard"
 version = "1.1.0"
@@ -784,6 +790,16 @@ dependencies = [
  "syn 1.0.17 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "serde_json"
+version = "1.0.51"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "itoa 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ryu 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.106 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "sha2"
 version = "0.8.1"
@@ -1139,10 +1155,12 @@ dependencies = [
 "checksum rmp 0.8.9 (registry+https://github.com/rust-lang/crates.io-index)" = "0f10b46df14cf1ee1ac7baa4d2fbc2c52c0622a4b82fa8740e37bc452ac0184f"
 "checksum rmp-serde 0.14.3 (registry+https://github.com/rust-lang/crates.io-index)" = "4c1ee98f14fe8b8e9c5ea13d25da7b2a1796169202c57a09d7288de90d56222b"
 "checksum rustversion 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "b3bba175698996010c4f6dce5e7f173b6eb781fce25d2cfc45e27091ce0b79f6"
+"checksum ryu 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "535622e6be132bccd223f4bb2b8ac8d53cda3c7a6394944d3b2b33fb974f9d76"
 "checksum scopeguard 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 "checksum serde 1.0.106 (registry+https://github.com/rust-lang/crates.io-index)" = "36df6ac6412072f67cf767ebbde4133a5b2e88e76dc6187fa7104cd16f783399"
 "checksum serde_bytes 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)" = "325a073952621257820e7a3469f55ba4726d8b28657e7e36653d1c36dc2c84ae"
 "checksum serde_derive 1.0.106 (registry+https://github.com/rust-lang/crates.io-index)" = "9e549e3abf4fb8621bd1609f11dfc9f5e50320802273b12f3811a67e6716ea6c"
+"checksum serde_json 1.0.51 (registry+https://github.com/rust-lang/crates.io-index)" = "da07b57ee2623368351e9a0488bb0b261322a15a6e0ae53e243cbdc0f4208da9"
 "checksum sha2 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "27044adfd2e1f077f649f59deb9490d3941d674002f7d062870a60ebe9bd47a0"
 "checksum signal-hook-registry 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "94f478ede9f64724c5d173d7bb56099ec3e2d9fc2774aac65d34b8b890405f41"
 "checksum slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"

Cargo.toml

@@ -28,3 +28,4 @@ hex = "0.3"
 sha2 = "0.8"
 async-trait = "0.1.30"
 reduce = "0.1.2"
+serde_json = "1.0"

src/data.rs

@@ -93,6 +93,20 @@ pub fn now_msec() -> u64 {
 		.as_millis() as u64
 }
 
+// RMP serialization with names of fields and variants
+
+pub fn rmp_to_vec_all_named<T>(val: &T) -> Result<Vec<u8>, rmp_serde::encode::Error>
+where T: Serialize + ?Sized
+{
+	let mut wr = Vec::with_capacity(128);
+	let mut se = rmp_serde::Serializer::new(&mut wr)
+		.with_struct_map()
+		.with_string_variants();
+	val.serialize(&mut se)?;
+	Ok(wr)
+
+}
+
 // Network management
 
 #[derive(Clone, Debug, Serialize, Deserialize)]

src/error.rs

@@ -23,6 +23,8 @@ pub enum Error {
 	RMPEncode(#[error(source)] rmp_serde::encode::Error),
 	#[error(display = "Messagepack decode error: {}", _0)]
 	RMPDecode(#[error(source)] rmp_serde::decode::Error),
+	#[error(display = "JSON error: {}", _0)]
+	JSON(#[error(source)] serde_json::error::Error),
 
 	#[error(display = "TOML decode error: {}", _0)]
 	TomlDecode(#[error(source)] toml::de::Error),

src/membership.rs

@@ -45,6 +45,7 @@ pub struct NodeStatus {
 	pub remaining_ping_attempts: usize,
 }
 
+#[derive(Debug)]
 pub struct RingEntry {
     pub location: Hash,
     pub node: UUID,
@@ -109,6 +110,12 @@ impl Members {
         new_ring.sort_unstable_by(|x, y| x.location.cmp(&y.location));
         self.ring = new_ring;
         self.n_datacenters = datacenters.len();
+
+		eprintln!("RING: --");
+		for e in self.ring.iter() {
+			eprintln!("{:?}", e);
+		}
+		eprintln!("END --");
     }
 
     pub fn walk_ring(&self, from: &Hash, n: usize) -> Vec<UUID> {
@@ -200,7 +207,7 @@ impl System {
         path.push("network_config");
 
         let members = self.members.read().await;
-        let data = rmp_serde::encode::to_vec_named(&members.config)
+        let data = rmp_to_vec_all_named(&members.config)
             .expect("Error while encoding network config");
         drop(members);
 

src/object_table.rs

@@ -83,6 +83,7 @@ impl TableFormat for ObjectTable {
 	type E = Object;
 
 	async fn updated(&self, old: Option<&Self::E>, new: &Self::E) {
-		unimplemented!()
+		//unimplemented!()
+		// TODO
 	}
 }

src/rpc_client.rs

@@ -106,7 +106,7 @@ impl RpcClient {
 		let req = Request::builder()
 			.method(Method::POST)
 			.uri(uri)
-			.body(Body::from(rmp_serde::encode::to_vec_named(msg)?))?;
+			.body(Body::from(rmp_to_vec_all_named(msg)?))?;
 
 		let resp_fut = self.client.request(req);
 		let resp = tokio::time::timeout(timeout, resp_fut).await??;

src/rpc_server.rs

@@ -8,6 +8,7 @@ use hyper::{Body, Method, Request, Response, Server, StatusCode};
 use futures::future::Future;
 
 use crate::error::Error;
+use crate::data::rmp_to_vec_all_named;
 use crate::proto::Message;
 use crate::server::Garage;
 
@@ -28,7 +29,7 @@ async fn handler(garage: Arc<Garage>, req: Request<Body>, addr: SocketAddr) -> R
 	let whole_body = hyper::body::to_bytes(req.into_body()).await?;
 	let msg = rmp_serde::decode::from_read::<_, Message>(whole_body.into_buf())?;
 
-	eprintln!("RPC from {}: {:?}", addr, msg);
+	eprintln!("RPC from {}: {}", addr, serde_json::to_string(&msg)?);
 
 	let sys = garage.system.clone();
 	let resp = err_to_msg(match &msg {
@@ -49,8 +50,10 @@ async fn handler(garage: Arc<Garage>, req: Request<Body>, addr: SocketAddr) -> R
 		_ => Ok(Message::Error(format!("Unexpected message: {:?}", msg))),
 	});
 
+	eprintln!("reply to {}: {}", addr, serde_json::to_string(&resp)?);
+
 	Ok(Response::new(Body::from(
-		rmp_serde::encode::to_vec_named(&resp)?
+		rmp_to_vec_all_named(&resp)?
         )))
 }
 

src/server.rs

@@ -136,7 +136,7 @@ pub async fn run_server(config_file: PathBuf) -> Result<(), Error> {
 		.expect("Unable to read config file");
 
 	let mut db_path = config.metadata_dir.clone();
-	db_path.push("garage_metadata");
+	db_path.push("db");
 	let db = sled::open(db_path)
 		.expect("Unable to open DB");
 

src/table.rs

@@ -44,7 +44,7 @@ impl<F: TableFormat + 'static> TableRpcHandler for TableRpcHandlerAdapter<F> {
 	async fn handle(&self, rpc: &[u8]) -> Result<Vec<u8>, Error> {
 		let msg = rmp_serde::decode::from_read_ref::<_, TableRPC<F>>(rpc)?;
 		let rep = self.table.handle(msg).await?;
-		Ok(rmp_serde::encode::to_vec_named(&rep)?)
+		Ok(rmp_to_vec_all_named(&rep)?)
 	}
 }
 
@@ -129,6 +129,7 @@ impl<F: TableFormat + 'static> Table<F> {
 		let hash = e.partition_key().hash();
 		let who = self.system.members.read().await
 			.walk_ring(&hash, self.param.replication_factor);
+		eprintln!("insert who: {:?}", who);
 
 		let rpc = &TableRPC::<F>::Update(vec![e.clone()]);
 		
@@ -142,6 +143,7 @@ impl<F: TableFormat + 'static> Table<F> {
 		let hash = partition_key.hash();
 		let who = self.system.members.read().await
 			.walk_ring(&hash, self.param.replication_factor);
+		eprintln!("get who: {:?}", who);
 
 		let rpc = &TableRPC::<F>::ReadEntry(partition_key.clone(), sort_key.clone());
 		let resps = self.rpc_try_call_many(&who[..],
@@ -169,7 +171,9 @@ impl<F: TableFormat + 'static> Table<F> {
 	}
 
 	async fn rpc_try_call_many(&self, who: &[UUID], rpc: &TableRPC<F>, quorum: usize) -> Result<Vec<TableRPC<F>>, Error> {
-		let rpc_bytes = rmp_serde::encode::to_vec_named(rpc)?;
+		eprintln!("Table RPC to {:?}: {}", who, serde_json::to_string(&rpc)?);
+
+		let rpc_bytes = rmp_to_vec_all_named(rpc)?;
 		let rpc_msg = Message::TableRPC(self.name.to_string(), rpc_bytes);
 
 		let resps = rpc_try_call_many(self.system.clone(),
@@ -188,6 +192,7 @@ impl<F: TableFormat + 'static> Table<F> {
 			}
 			return Err(Error::Message(format!("Invalid reply to TableRPC: {:?}", resp)))
 		}
+		eprintln!("Table RPC responses: {}", serde_json::to_string(&resps_vals)?);
 		Ok(resps_vals)
 	}
 
@@ -228,7 +233,7 @@ impl<F: TableFormat + 'static> Table<F> {
 				None => None
 			};
 
-			let new_bytes = rmp_serde::encode::to_vec_named(&entry)?;
+			let new_bytes = rmp_to_vec_all_named(&entry)?;
 			self.store.insert(&tree_key, new_bytes)?;
 
 			self.instance.updated(old_val.as_ref(), &entry).await;