robocop

commit 67ccfc97e548203686af985b8115d110d14bf30f
parent eb044e6cad119242ef3a06a5f01a75647e970184
Author: Christian Grothoff <christian@grothoff.org>
Date:   Sun,  8 Jun 2025 23:11:24 +0200

more logging, harsher error handling

Diffstat:
M
src/main.rs
 | 
12
++++++++----

1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/src/main.rs b/src/main.rs
@@ -18,7 +18,7 @@
 use std::collections::HashMap;
 use std::env;
 use std::fs;
-use std::io::{self, BufRead, BufReader};
+use std::io::{self, Write, BufRead, BufReader};
 use serde_json::{Value, Map};
 
 // Finite State Machine for efficient string matching
@@ -258,20 +258,24 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     for line in reader.lines() {
         let line = line?;
         if line.trim().is_empty() {
-            continue;
+            eprintln!("ERROR: empty input line");
+            std::process::exit(1);
         }
 
         match serde_json::from_str::<Value>(&line) {
             Ok(Value::Object(obj)) => {
+                eprintln!("INFO: robocop received input: {}", line);
                 let (quality, confidence, ssid) = engine.find_best_match(&obj);
                 println!("{:.6} {:.6} {}", quality, confidence, ssid);
+                // Not 100% clear if flush is needed here, but safer.
+                io::stdout().flush().unwrap();
             }
             Ok(_) => {
-                eprintln!("Warning: Skipping non-object JSON: {}", line);
+                eprintln!("ERROR: non-object JSON received: {}", line);
                 std::process::exit(1);
             }
             Err(e) => {
-                eprintln!("Warning: Failed to parse JSON: {} - {}", line, e);
+                eprintln!("ERROR: Failed to parse JSON: {} - {}", line, e);
                 std::process::exit(1);
             }
         }