From f52ae6973299fa3c1d81758838951e39904e1d84 Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Sun, 25 Oct 2026 13:38:59 +0100
Subject: add files module to consistently track stats

---
 src/api/stats/prometheus.rs | 53 ++++++++++++++++++++++++---------------------
 1 file changed, 28 insertions(+), 25 deletions(-)

(limited to 'src/api/stats')

diff --git a/src/api/stats/prometheus.rs b/src/api/stats/prometheus.rs
index ea97bd2..e267042 100644
--- a/src/api/stats/prometheus.rs
+++ b/src/api/stats/prometheus.rs
@@ -297,31 +297,34 @@ pub(super) async fn render(state: &AppState, stats: &StatsResponse) -> String {
         stats.stale_hello_replies as f64,
     );
 
-    let disk = &stats.disk;
-    out.single(
-        "disk_reads_total",
-        "counter",
-        "Files this node read for itself (state file, backup).",
-        disk.reads as f64,
-    );
-    out.single(
-        "disk_read_bytes_total",
-        "counter",
-        "Bytes of those files.",
-        disk.read_bytes as f64,
-    );
-    out.single(
-        "disk_writes_total",
-        "counter",
-        "Files this node wrote for itself (state file).",
-        disk.writes as f64,
-    );
-    out.single(
-        "disk_written_bytes_total",
-        "counter",
-        "Bytes of those files.",
-        disk.written_bytes as f64,
-    );
+    type Field = fn(&super::DiskStats) -> u64;
+    let disk: [(&str, &str, Field); 5] = [
+        ("disk_reads_total", "Reads of this node's own files.", |c| {
+            c.reads
+        }),
+        ("disk_read_bytes_total", "Bytes read from them.", |c| {
+            c.read_bytes
+        }),
+        (
+            "disk_writes_total",
+            "Writes of this node's own files.",
+            |c| c.writes,
+        ),
+        ("disk_written_bytes_total", "Bytes written to them.", |c| {
+            c.written_bytes
+        }),
+        (
+            "disk_errors_total",
+            "Failed reads and writes of them.",
+            |c| c.errors,
+        ),
+    ];
+    for (name, help, field) in disk {
+        out.family(name, "counter", help);
+        for (kind, counts) in &stats.disk {
+            out.sample(name, &[("file", *kind)], field(counts) as f64);
+        }
+    }
 
     let propagation = &stats.propagation;
     out.family(
-- 
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