src/rrd/cache.rs: display/log error when RRD load fails

2020-05-25 10:18:53 +02:00
parent 0c4344650d
commit 84dc6adcc1
2 changed files with 20 additions and 8 deletions
--- a/src/rrd/cache.rs
+++ b/src/rrd/cache.rs
@ -56,7 +56,12 @@ pub fn update_value(rel_path: &str, value: f64, dst: DST) -> Result<(), Error> {
    } else {
        let mut rrd = match RRD::load(&path) {
            Ok(rrd) => rrd,
-            Err(_) => RRD::new(dst),
+            Err(err) => {
+                if err.kind() != std::io::ErrorKind::NotFound {
+                    eprintln!("overwriting old RRD file, because of load error: {}", err);
+                }
+                RRD::new(dst)
+            },
        };
        rrd.update(now, value);
        rrd.save(&path)?;