add memory stats

app/mem/mem.go

@@ -0,0 +1,69 @@
+package mem
+
+import (
+	"finally-a-monolithic-linux-hw-monitor/app/mem/drivers"
+	"fmt"
+	"strings"
+)
+
+func RenderMem(console *strings.Builder, mem *Mem) {
+	fmt.Fprintf(console, "=== %s ===\n", "Memory")
+	RenderUsageSensors(console, mem)
+	RenderHardwareSensors(console, mem)
+}
+
+func RenderUsageSensors(console *strings.Builder, mem *Mem) {
+	usage, _ := mem.SensorReader.ReadUsageSensors()
+	fmt.Fprintf(console, "--- Usage ---\n")
+	fmt.Fprintf(console, "%-16s | %.2f GiB\033[K\n", "Total", usage.TotalGB)
+	fmt.Fprintf(console, "%-16s | %.2f GiB (%.2f%%) \033[K\n", "Used", usage.UsedGB, usage.UsedPercent)
+	fmt.Fprintf(console, "%-16s | %.2f GiB\033[K\n", "Avail", usage.AvailableGB)
+}
+
+func RenderHardwareSensors(console *strings.Builder, mem *Mem) {
+	hardware, _ := mem.SensorReader.ReadHardwareSensors()
+	for i := range len(hardware.ModelNames) {
+		fmt.Fprintf(console, "--- RAM Module %d ---\n", i)
+		modelName := hardware.ModelNames[i]
+		fmt.Fprintf(console, "%-16s | %-16s \033[K\n", "Model Name", modelName)
+		generation := hardware.Generations[i]
+		speed := hardware.Speeds[i]
+		fmt.Fprintf(console, "%-16s | %s@%s \033[K\n", "Speed", generation, speed)
+		formFactor := hardware.FormFactors[i]
+		fmt.Fprintf(console, "%-16s | %s \033[K\n", "Form Factor", formFactor)
+	}
+}
+
+type Mem struct {
+	SensorReader MemSensorReader
+}
+
+func GetMem() (Mem, error) {
+	memInfoDriver := drivers.NewMemInfoDriver()
+	dmiDecodeDriver := drivers.NewDmiDecodeDriver()
+	reader := &StandardMemSensorReader{
+		UsageReader:    memInfoDriver,
+		HardwareReader: dmiDecodeDriver,
+	}
+	return Mem{
+		SensorReader: reader,
+	}, nil
+}
+
+type MemSensorReader interface {
+	ReadUsageSensors() (drivers.MemoryUsage, error)
+	ReadHardwareSensors() (drivers.MemoryHardware, error)
+}
+
+type StandardMemSensorReader struct {
+	UsageReader    drivers.UsageDriver
+	HardwareReader drivers.HardwareDriver
+}
+
+func (r *StandardMemSensorReader) ReadUsageSensors() (drivers.MemoryUsage, error) {
+	return r.UsageReader.ReadUsageSensors()
+}
+
+func (r *StandardMemSensorReader) ReadHardwareSensors() (drivers.MemoryHardware, error) {
+	return r.HardwareReader.ReadHardwareSensors()
+}