api2/status: use new rrd::extract_cached_data

and drop the now unused extract_lists function

this also fixes a bug, where we did not add the datastore to the list at
all when there was no rrd data

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>

src/rrd/cache.rs

@@ -65,43 +65,6 @@ pub fn update_value(rel_path: &str, value: f64, dst: DST, save: bool) -> Result<
     Ok(())
 }
 
-/// extracts the lists of the given items and a list of timestamps
-pub fn extract_lists(
-    base: &str,
-    items: &[&str],
-    timeframe: RRDTimeFrameResolution,
-    mode: RRDMode,
-) -> Result<(Vec<u64>, HashMap<String, Vec<Option<f64>>>), Error> {
-
-    let now = now()?;
-
-    let map = RRD_CACHE.read().unwrap();
-
-    let mut result = HashMap::new();
-
-    let mut times = Vec::new();
-
-    for name in items.iter() {
-        let rrd = match map.get(&format!("{}/{}", base, name)) {
-            Some(rrd) => rrd,
-            None => continue,
-        };
-        let (start, reso, list) = rrd.extract_data(now, timeframe, mode);
-
-        result.insert(name.to_string(), list);
-
-        if times.len() == 0 {
-            let mut t = start;
-            for _ in 0..RRD_DATA_ENTRIES {
-                times.push(t);
-                t += reso;
-            }
-        }
-    }
-
-    Ok((times, result))
-}
-
 pub fn extract_cached_data(
     base: &str,
     name: &str,