refactor `readBondingStats`

Signed-off-by: JustHumanz <aldin.setiawan@vexxhost.com>

collector/bonding_linux.go

@@ -33,6 +33,11 @@ type bondingCollector struct {
 	logger                 *slog.Logger
 }
 
+type bondingStats struct {
+	name                   string
+	slaves, active, miimon int
+}
+
 func init() {
 	registerCollector("bonding", defaultEnabled, NewBondingCollector)
 }
@@ -71,27 +76,16 @@ func (c *bondingCollector) Update(ch chan<- prometheus.Metric) error {
 		}
 		return err
 	}
-	for master, status := range bondingStats {
-		ch <- c.slaves.mustNewConstMetric(float64(status[0]), master)
-		ch <- c.active.mustNewConstMetric(float64(status[1]), master)
-	}
-
-	bondingMiimon, err := readBondingMiimon(statusfile)
-	if err != nil {
-		if errors.Is(err, os.ErrNotExist) {
-			c.logger.Debug("Not collecting bonding, file does not exist", "file", statusfile)
-			return ErrNoData
-		}
-		return err
-	}
-	for bond, miimon := range bondingMiimon {
-		ch <- c.miimon.mustNewConstMetric(float64(miimon), bond)
+	for _, bond := range bondingStats {
+		ch <- c.slaves.mustNewConstMetric(float64(bond.slaves), bond.name)
+		ch <- c.active.mustNewConstMetric(float64(bond.active), bond.name)
+		ch <- c.miimon.mustNewConstMetric(float64(bond.miimon), bond.name)
 	}
 	return nil
 }
 
-func readBondingStats(root string) (status map[string][2]int, err error) {
-	status = map[string][2]int{}
+func readBondingStats(root string) (status []bondingStats, err error) {
+	status = []bondingStats{}
 	masters, err := os.ReadFile(filepath.Join(root, "bonding_masters"))
 	if err != nil {
 		return nil, err
@@ -116,30 +110,22 @@ func readBondingStats(root string) (status map[string][2]int, err error) {
 				sstat[1]++
 			}
 		}
-		status[master] = sstat
-	}
-	return status, err
-}
-
-func readBondingMiimon(root string) (status map[string]int, err error) {
-	status = map[string]int{}
-	masters, err := os.ReadFile(filepath.Join(root, "bonding_masters"))
-	if err != nil {
-		return nil, err
-	}
 
-	for _, master := range strings.Fields(string(masters)) {
 		miimon, err := os.ReadFile(filepath.Join(root, master, "bonding", "miimon"))
 		if err != nil {
 			return nil, err
 		}
-
 		intMiimon, err := strconv.Atoi(strings.TrimSpace(string(miimon)))
 		if err != nil {
 			return nil, err
 		}
 
-		status[master] = intMiimon
+		status = append(status, bondingStats{
+			name:   master,
+			slaves: sstat[0],
+			active: sstat[1],
+			miimon: intMiimon,
+		})
 	}
 	return status, err
 }

collector/bonding_linux_test.go

@@ -25,15 +25,15 @@ func TestBonding(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	if bondingStats["bond0"][0] != 0 || bondingStats["bond0"][1] != 0 {
+	if bondingStats[0].name != "bond0" || bondingStats[0].slaves != 0 || bondingStats[0].active != 0 || bondingStats[0].miimon != 100 {
 		t.Fatal("bond0 in unexpected state")
 	}
 
-	if bondingStats["int"][0] != 2 || bondingStats["int"][1] != 1 {
-		t.Fatal("int in unexpected state")
+	if bondingStats[1].name != "dmz" || bondingStats[1].slaves != 2 || bondingStats[1].active != 2 || bondingStats[1].miimon != 0 {
+		t.Fatal("dmz in unexpected state")
 	}
 
-	if bondingStats["dmz"][0] != 2 || bondingStats["dmz"][1] != 2 {
-		t.Fatal("dmz in unexpected state")
+	if bondingStats[2].name != "int" || bondingStats[2].slaves != 2 || bondingStats[2].active != 1 || bondingStats[2].miimon != 200 {
+		t.Fatal("int in unexpected state")
 	}
 }

collector/fixtures/sys.ttar

@@ -1713,7 +1713,7 @@ Mode: 644
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 Path: sys/class/net/bond0/bonding/miimon
 Lines: 1
-200
+100
 Mode: 644
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 Path: sys/class/net/bond0/broadcast
@@ -1860,7 +1860,7 @@ Mode: 644
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 Path: sys/class/net/dmz/bonding/miimon
 Lines: 1
-200
+0
 Mode: 644
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 Path: sys/class/net/dmz/broadcast