feat: added ARP Table informatio and corresponding testcase

README.md

@@ -73,6 +73,9 @@ Per-VDOM:
  * _System/Fortimanager/Status_
  * `fortigate_fortimanager_connection_status`
  * `fortigate_fortimanager_registration_status`
+ * `fortigate_ippool_total_items`
+ * _System/Network/Arp
+ * `fortigate_arp_entry_age_seconds`
  * _System/Interface_
  * `fortigate_interface_link_up`
  * `fortigate_interface_speed_bps`

pkg/probe/probe.go

@@ -128,6 +128,7 @@ func (p *ProbeCollector) Probe(ctx context.Context, target map[string]string, hc
  {"Log/Fortianalyzer/Queue", probeLogAnalyzerQueue},
  {"Log/DiskUsage", probeLogCurrentDiskUsage},
  {"System/AvailableCertificates", probeSystemAvailableCertificates},
+ {"System/ArpTable", probeSystemArpTable},
  {"System/Fortimanager/Status", probeSystemFortimanagerStatus},
  {"System/HAStatistics", probeSystemHAStatistics},
  {"System/Interface", probeSystemInterface},

pkg/probe/system_arp.go

@@ -0,0 +1,45 @@
+package probe
+
+import (
+ "log"
+
+ "github.com/bluecmd/fortigate_exporter/pkg/http"
+ "github.com/prometheus/client_golang/prometheus"
+)
+
+func probeSystemArpTable(c http.FortiHTTP, meta *TargetMetadata) ([]prometheus.Metric, bool) {
+ var (
+ mArpEntryAge = prometheus.NewDesc(
+ "fortigate_arp_entry_age_seconds",
+ "Age of ARP table entry in seconds",
+ []string{"ip", "mac", "interface"}, nil,
+ )
+ )
+
+ type arpEntry struct {
+ IP string `json:"ip"`
+ Age int `json:"age"`
+ MAC string `json:"mac"`
+ Interface string `json:"interface"`
+ }
+
+ type arpResponse struct {
+ Results []arpEntry `json:"results"`
+ VDOM string `json:"vdom"`
+ }
+
+ var r arpResponse
+
+ if err := c.Get("api/v2/monitor/network/arp/select", "", &r); err != nil {
+ log.Printf("Error: %v", err)
+ return nil, false
+ }
+
+ metrics := []prometheus.Metric{}
+ for _, entry := range r.Results {
+ metrics = append(metrics, prometheus.MustNewConstMetric(mArpEntryAge, prometheus.GaugeValue, float64(entry.Age), entry.IP, entry.MAC, entry.Interface))
+ // Add more metrics if needed
+ }
+
+ return metrics, true
+}

pkg/probe/system_arp_test.go

@@ -0,0 +1,28 @@
+package probe
+
+import (
+ "strings"
+ "testing"
+
+ "github.com/prometheus/client_golang/prometheus"
+ "github.com/prometheus/client_golang/prometheus/testutil"
+)
+
+func TestSystemArpTable(t *testing.T) {
+ c := newFakeClient()
+ c.prepare("api/v2/monitor/network/arp/select", "testdata/arp.jsonnet")
+ r := prometheus.NewPedanticRegistry()
+ if !testProbe(probeSystemArpTable, c, r) {
+ t.Errorf("probeSystemArpTable() returned non-success")
+ }
+
+ em := `
+ # HELP fortigate_arp_entry_age_seconds Age of ARP table entry in seconds
+ # TYPE fortigate_arp_entry_age_seconds gauge
+ fortigate_arp_entry_age_seconds{ip="192.168.1.23",mac="aa:05:f3:a6:33:2a",interface="port1"} 0
+ fortigate_arp_entry_age_seconds{ip="192.168.1.1",mac="80:16:05:f8:71:10",interface="port1"} 35
+ `
+ if err := testutil.GatherAndCompare(r, strings.NewReader(em)); err != nil {
+ t.Fatalf("metric compare: err %v", err)
+ }
+}

pkg/probe/testdata/arp.jsonnet

@@ -0,0 +1,28 @@
+# api/v2/monitor/network/arp/select?vdom=*
+[
+ {
+ "http_method": "GET",
+ "results": [
+ {
+ "ip": "192.168.1.23",
+ "age": 0,
+ "mac": "aa:05:f3:a6:33:2a",
+ "interface": "port1"
+ },
+ {
+ "ip": "192.168.1.1",
+ "age": 35,
+ "mac": "80:16:05:f8:71:10",
+ "interface": "port1"
+ }
+ ],
+ "vdom": "root",
+ "path": "network",
+ "name": "arp",
+ "action": "",
+ "status": "success",
+ "serial": "FGVMEVHX1X8UNJ34",
+ "version": "v7.0.5",
+ "build": 304
+ }
+]