data: add support for OWE per-node statistics

Gluon exports information about how many OWE capable clients are
connected to a given node. The OWE client count is already contained in
the wifi* counters and only provides more-specific information.

data/statistics.go

@@ -63,6 +63,9 @@ type Clients struct {
 	Wifi   uint32 `json:"wifi"`
 	Wifi24 uint32 `json:"wifi24"`
 	Wifi5  uint32 `json:"wifi5"`
+	Owe    uint32 `json:"owe"`
+	Owe24  uint32 `json:"owe24"`
+	Owe5   uint32 `json:"owe5"`
 	Total  uint32 `json:"total"`
 }
 

data/statistics_test.go

@@ -20,6 +20,9 @@ func TestStatistics(t *testing.T) {
 	assert.Equal(uint32(35), obj.Clients.Wifi)
 	assert.Equal(uint32(30), obj.Clients.Wifi24)
 	assert.Equal(uint32(8), obj.Clients.Wifi5)
+	assert.Equal(uint32(10), obj.Clients.Owe)
+	assert.Equal(uint32(5), obj.Clients.Owe24)
+	assert.Equal(uint32(6), obj.Clients.Owe5)
 }
 
 func testfile(name string, obj interface{}) {

data/testdata/statistics.json

@@ -1,6 +1,9 @@
 {
   "clients": {
     "total": 35,
+    "owe": 10,
+    "owe24": 5,
+    "owe5": 6,
     "wifi": 35,
     "wifi24": 30,
     "wifi5": 8