[BUGFIX] ref of primitiv datatypes did not work (but compile ^^)

meshviewer/meshviewer_test.go

@@ -0,0 +1,36 @@
+package meshviewer
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"github.com/FreifunkBremen/yanic/data"
+)
+
+func TestNewMeshviewer(t *testing.T) {
+	assert := assert.New(t)
+
+	stats := NewStatistics(&data.Statistics{
+		Clients: &data.Clients{Total: 32},
+		Memory: &data.Memory{
+			Total: 2,
+			Free:  1,
+		},
+	})
+	assert.Equal(0.5, stats.MemoryUsage, "Wrong calculated memory")
+	assert.Equal(uint32(32), stats.Clients, "Wrong client count with given total")
+
+	stats = NewStatistics(&data.Statistics{
+		Clients: &data.Clients{
+			Wifi24: 3,
+			Wifi5:  4,
+		},
+		Memory: &data.Memory{
+			Total: 0,
+			Free:  1,
+		},
+	})
+	assert.Equal(1.0, stats.MemoryUsage, "Wrong calculated memory during divide by zero")
+	assert.Equal(uint32(7), stats.Clients, "Wrong client count without total and wifi from batman")
+}

meshviewer/node.go

@@ -27,7 +27,7 @@ type Statistics struct {
 	Clients     uint32  `json:"clients"`
 	RootFsUsage float64 `json:"rootfs_usage,omitempty"`
 	LoadAverage float64 `json:"loadavg,omitempty"`
-	MemoryUsage *float64 `json:"memory_usage,omitempty"`
+	MemoryUsage float64 `json:"memory_usage,omitempty"`
 	Uptime      float64 `json:"uptime,omitempty"`
 	Idletime    float64 `json:"idletime,omitempty"`
 	GatewayIPv4 string  `json:"gateway,omitempty"`
@@ -61,7 +61,7 @@ func NewStatistics(stats *data.Statistics) *Statistics {
 	 * https://github.com/FreifunkBremen/yanic/issues/35)
 	 */
 
-	meshviewerStats := &Statistics{
+	result := &Statistics{
 		NodeID:      stats.NodeID,
 		GatewayIPv4: stats.GatewayIPv4,
 		GatewayIPv6: stats.GatewayIPv6,
@@ -73,9 +73,10 @@ func NewStatistics(stats *data.Statistics) *Statistics {
 		MeshVPN:     stats.MeshVPN,
 		Traffic:     stats.Traffic,
 		Clients:     total,
+		MemoryUsage: 1,
 	}
 	if memory := stats.Memory; memory != nil && memory.Total > 0 {
-		*meshviewerStats.MemoryUsage = 1 - (float64(memory.Free)+float64(memory.Buffers)+float64(memory.Cached))/float64(memory.Total)
+		result.MemoryUsage = 1 - (float64(memory.Free)+float64(memory.Buffers)+float64(memory.Cached))/float64(memory.Total)
 	}
-	return meshviewerStats
+	return result
 }