func GetMachineMemoryByType()

in machine/machine.go [156:203]
45 lines of code
13 McCabe index (conditional complexity)

func GetMachineMemoryByType(edacPath string) (map[string]*info.MemoryInfo, error) {
	memory := map[string]*info.MemoryInfo{}
	names, err := os.ReadDir(edacPath)
	// On some architectures (such as ARM) memory controller device may not exist.
	// If this is the case then we ignore error and return empty slice.
	_, ok := err.(*os.PathError)
	if err != nil && ok {
		return memory, nil
	} else if err != nil {
		return memory, err
	}
	for _, controllerDir := range names {
		controller := controllerDir.Name()
		if !isMemoryController.MatchString(controller) {
			continue
		}
		dimms, err := os.ReadDir(path.Join(edacPath, controllerDir.Name()))
		if err != nil {
			return map[string]*info.MemoryInfo{}, err
		}
		for _, dimmDir := range dimms {
			dimm := dimmDir.Name()
			if !isDimm.MatchString(dimm) {
				continue
			}
			memType, err := os.ReadFile(path.Join(edacPath, controller, dimm, memTypeFileName))
			if err != nil {
				return map[string]*info.MemoryInfo{}, err
			}
			readableMemType := strings.TrimSpace(string(memType))
			if _, exists := memory[readableMemType]; !exists {
				memory[readableMemType] = &info.MemoryInfo{}
			}
			size, err := os.ReadFile(path.Join(edacPath, controller, dimm, sizeFileName))
			if err != nil {
				return map[string]*info.MemoryInfo{}, err
			}
			capacity, err := strconv.Atoi(strings.TrimSpace(string(size)))
			if err != nil {
				return map[string]*info.MemoryInfo{}, err
			}
			memory[readableMemType].Capacity += uint64(mbToBytes(capacity))
			memory[readableMemType].DimmCount++
		}
	}

	return memory, nil
}