Simple log file

crates/local-event-bus/Cargo.toml

@@ -10,4 +10,9 @@ futures-util = { version = "0.3.28" }
 futures = { version = "0.3.28" }
 futures-async-runtime = { version = "0.2.1" }
 tracing = { version = "0" }
-serde = { version = "1.0.162" }
+serde = { version = "1.0.162", features = ['derive'] }
+flumedb = "*"
+serde_json = "*"
+async-std = { version = "*", features = ["attributes"] }
+tide = "*"
+gumdrop = "*"

crates/local-event-bus/src/main.rs

@@ -1,3 +1,60 @@
-fn main() {
+use flumedb::*;
-    println!("Hello, world!");
+use gumdrop::Options;
+
+#[derive(Debug, thiserror::Error)]
+enum Error {}
+
+#[derive(Options)]
+struct Opts {
+    help: bool,
+    log_path: String,
+    bind: String,
+    listen_port: u16,
+    broadcast_port: u16,
+}
+
+#[async_std::main]
+async fn main() -> Result<(), Error> {
+    let path = {
+        let args = std::env::args();
+        let mut iter = args.into_iter();
+        iter
+            .next();
+        iter.next()
+            .expect("Log file path not found. Please privide path to log file")
+    };
+    eprintln!("File: {path}");
+
+    let mut log = OffsetLog::<u32>::from_file(
+        std::fs::OpenOptions::new()
+            .append(true)
+            .create(true)
+            .write(true)
+            .read(true)
+            .open(&path)
+            .expect("Failed to open log file"),
+    )
+    .expect("Failed to open log file");
+
+    let len = log.iter().count();
+
+    log.append(&len.to_le_bytes()).expect("Failed to write");
+
+    // Read the entry at offset 0
+    let r = log.read(0).expect("Failed to read at 0");
+    // `r.data` is a json string in a standard ssb log.
+    // `r.next` is the offset of the next entry.
+    let r = log.read(r.next);
+
+    log.iter().map(|r| {
+        eprintln!("{r:?}");
+        let (vec, _) = r.data.split_at(std::mem::size_of::<usize>());
+        usize::from_le_bytes(vec.try_into().unwrap())
+    })
+        .for_each(|v| eprintln!("value {v:?}"));
+    // log.iter()
+    //     .map(|e| serde_json::from_slice::<serde_json::Value>(&e.data).unwrap())
+    //     .for_each(|v| println!("{}", serde_json::to_string_pretty(&v).unwrap()));
+
+    Ok(())
 }