Fixed Basic Serialization/Deserialization to json

Cargo.lock

@@ -1319,9 +1319,9 @@ checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.60"
+version = "1.0.66"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dec2b086b7a862cf4de201096214fa870344cf922b2b30c167badb3af3195406"
+checksum = "18fb31db3f9bddb2ea821cde30a9f70117e3f119938b5ee630b7403aa6e2ead9"
 dependencies = [
  "unicode-ident",
 ]
@@ -1661,9 +1661,9 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.164"
+version = "1.0.174"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9e8c8cf938e98f769bc164923b06dce91cea1751522f46f8466461af04c9027d"
+checksum = "3b88756493a5bd5e5395d53baa70b194b05764ab85b59e43e4b8f4e1192fa9b1"
 dependencies = [
  "serde_derive",
 ]
@@ -1679,9 +1679,9 @@ dependencies = [
 
 [[package]]
 name = "serde_derive"
-version = "1.0.164"
+version = "1.0.174"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d9735b638ccc51c28bf6914d90a2e9725b377144fc612c49a611fddd1b631d68"
+checksum = "6e5c3a298c7f978e53536f95a63bdc4c4a64550582f31a0359a9afda6aede62e"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1690,9 +1690,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.97"
+version = "1.0.103"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bdf3bf93142acad5821c99197022e170842cdbc1c30482b98750c688c640842a"
+checksum = "d03b412469450d4404fe8499a268edd7f8b79fecb074b0d812ad64ca21f4031b"
 dependencies = [
  "itoa",
  "ryu",
@@ -1833,9 +1833,9 @@ checksum = "734676eb262c623cec13c3155096e08d1f8f29adce39ba17948b18dad1e54142"
 
 [[package]]
 name = "syn"
-version = "2.0.18"
+version = "2.0.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32d41677bcbe24c20c52e7c70b0d8db04134c5d1066bf98662e2871ad200ea3e"
+checksum = "b60f673f44a8255b9c8c657daf66a596d435f2da81a555b06dc644d080ba45e0"
 dependencies = [
  "proc-macro2",
  "quote",

crates/lox-distributor/Cargo.toml

@@ -21,13 +21,13 @@ tokio = { version = "1", features = ["full", "macros", "signal"] }
 rand = "0.8.5"
 serde = { version = "1.0", features = ["derive", "rc"] }
 serde_with = "3.0.0"
-serde_json = "1.0.87"
 zkp = "0.8.0"
 
 lox-library = { path = "../lox-library", version = "0.1.0"}
 lox_utils = { path = "../lox-utils", version = "0.1.0"}
 rdsys_backend = { path = "../rdsys-backend-api", version = "0.2"}
 clap = { version = "4.3.17", features = ["derive"] }
+serde_json = "1.0.103"
 
 [dependencies.chrono]
 version = "0.4.19"

crates/lox-distributor/src/main.rs

@@ -12,12 +12,14 @@ use lox_library::{BridgeAuth, BridgeDb};
 
 use rdsys_backend::{proto::ResourceDiff, start_stream};
 use serde::Deserialize;
+use std::env;
 use std::{
     convert::Infallible,
+    error::Error,
     fs::File,
     io::BufReader,
     net::SocketAddr,
-    path::PathBuf,
+    path::{Path, PathBuf},
     sync::{Arc, Mutex},
     time::Duration,
 };
@@ -44,11 +46,11 @@ async fn shutdown_signal() {
 #[derive(Parser, Debug)]
 #[command(author, version, about, long_about = None)]
 struct Args {
-    /// Name of the person to greet
+    /// Name/path of the configuration file
     #[arg(short, long, default_value = "config.json")]
     config: PathBuf,
 
-    /// Number of times to greet
+    /// Optional name/path of the db file
     #[arg(short, long)]
     db: Option<PathBuf>,
 }
@@ -120,17 +122,36 @@ async fn create_context_manager(
     }
 }
 
+fn read_context_from_file<P: AsRef<Path>>(
+    path: P,
+) -> Result<lox_context::LoxServerContext, Box<dyn Error>> {
+    let file = File::open(path)?;
+    let reader = BufReader::new(file);
+    let context = serde_json::from_reader(reader)?;
+    Ok(context)
+}
+
 // Context Manager handles the Lox BridgeDB and Bridge Authority, ensuring
 // that the DB can be updated from the rdsys stream and client requests
 // can be responded to with an updated BridgeDB state
 async fn context_manager(db_path: Option<PathBuf>, mut context_rx: mpsc::Receiver<Command>) {
     let context: lox_context::LoxServerContext;
     if let Some(existing_db) = db_path.as_deref() {
-        let file = File::open(existing_db).expect("Should have been able to read config.json file");
+        context = read_context_from_file(existing_db).unwrap();
-        let reader = BufReader::new(file);
+    } else {
-        // Read the JSON contents of the file as a ResourceIn
+        let current_path = env::current_dir().expect("Unable to access current dir");
-        context =
+        if let Some(last_modified_file) = std::fs::read_dir(current_path)
-            serde_json::from_reader(reader).expect("Reading SerializableContext from JSON failed.");
+            .expect("Couldn't read local directory")
+            .flatten() // Remove failed
+            .filter(|f| {
+                f.metadata().unwrap().is_file()
+                    && (f.file_name().into_string().unwrap().contains("_lox.json"))
+            }) // Filter out directories (only consider files)
+            .max_by_key(|x| x.metadata().unwrap().modified().unwrap())
+        // Get the most recently modified file
+        {
+            println!("Reading from file {:?}", last_modified_file);
+            context = read_context_from_file(&last_modified_file.path()).unwrap();
         } else {
             let new_db = BridgeDb::new();
             let new_ba = BridgeAuth::new(new_db.pubkey);
@@ -141,6 +162,7 @@ async fn context_manager(db_path: Option<PathBuf>, mut context_rx: mpsc::Receive
                 to_be_replaced_bridges: Arc::new(Mutex::new(Vec::new())),
             };
         }
+    }
 
     while let Some(cmd) = context_rx.recv().await {
         use Command::*;
@@ -287,7 +309,7 @@ async fn context_manager(db_path: Option<PathBuf>, mut context_rx: mpsc::Receive
                 */
                 context.allocate_leftover_bridges();
                 context.encrypt_table();
-                let mut date = Local::now().format("%Y-%m-%d").to_string();
+                let mut date = Local::now().format("%Y-%m-%d_%H:%M:%S").to_string();
                 let path = "_lox.json";
                 date.push_str(path);
                 let file = File::create(&date).expect("Unable to write to file!");

crates/lox-library/Cargo.toml

@@ -17,7 +17,7 @@ bincode = "1"
 chrono = "0.4"
 rand = "0.7"
 serde = "1.0.164"
-serde_with = "3.0.0"
+serde_with = {version = "3.0.0", features = ["json"]}
 sha2 = "0.9"
 statistical = "1.0.0"
 lazy_static = "1"

crates/lox-library/src/bridge_table.rs

@@ -237,7 +237,7 @@ struct K {
 /// the encrypted buckets.  The encrypted buckets will be exposed to the
 /// users of the system, and each user credential will contain the
 /// decryption key for one bucket.
-//#[serde_as]
+#[serde_as]
 #[derive(Debug, Default, Serialize, Deserialize)]
 pub struct BridgeTable {
     // All structures in the bridgetable are indexed by counter
@@ -246,6 +246,7 @@ pub struct BridgeTable {
     pub buckets: HashMap<u32, [BridgeLine; MAX_BRIDGES_PER_BUCKET]>,
     pub encbuckets: HashMap<u32, EncryptedBucket>,
     /// Individual bridges that are reachable
+    #[serde_as(as = "HashMap<serde_with::json::JsonString, _>")]
     pub reachable: HashMap<BridgeLine, Vec<(u32, usize)>>,
     /// bucket ids of "hot spare" buckets.  These buckets are not handed
     /// to users, nor do they have any Migration credentials pointing to