senset/smarter-device-manager
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Fix access to files on subdirectorties on /dev

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This commit is contained in:
Alexandre Ferreira 2021-05-18 12:11:31 -05:00
parent 841471d149
commit 8adb22dc29
2 changed files with 33 additions and 12 deletions
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4
README.md
View File

@ -17,6 +17,10 @@ The smarter-device-manager starts by reading a YAML configuration file. This con
nummaxdevices: 10
```
Devices in subdirectories have the slash replaced with underscore in the
resource name, due to kubernetes naming restrictions: e.g. `/dev/net/tun`
becomes `smarter-devices/net_tun`.
The default config file provided will enable most of the devices available on a Raspberry Pi (vers 1-4) or equivalent boards. I2C, SPI, video devices, sound and others would be enabled. The config file can be replaced using a configmap to enable or disable access to different devices, like accelerators, GPUs, etc.
The node will show the devices it recognizes as resources in the node object in Kubernetes. The example below shows a raspberry PI.

41
main.go
View File

@ -56,17 +56,33 @@ func init() {
}
func readDevDirectory(dirToList string) (files []string, err error) {
f, err := os.Open(dirToList)
if err != nil {
return nil, err
}
files, err = f.Readdirnames(-1)
f.Close()
if err != nil {
return nil, err
}
var foundFiles []string
return files, nil
f, err := os.Open(dirToList)
if err != nil {
return nil, err
}
files, err = f.Readdirnames(-1)
if err != nil {
f.Close()
return nil, err
}
f.Close()
for _, subDir := range files {
foundFiles = append(foundFiles, subDir)
filesDir, err := readDevDirectory(dirToList+"/"+subDir)
if err == nil {
for _, fileName := range filesDir {
foundFiles = append(foundFiles, subDir+"/"+fileName)
}
}
}
return foundFiles, nil
}
func sanitizeName(path string) string {
return strings.Replace(path, "/", "_" ,-1)
}
func findDevicesPattern(listDevices []string, pattern string) ([]string,error) {
@ -151,9 +167,10 @@ func main() {
if len(foundDevices) > 0 {
for _, deviceToCreate := range foundDevices {
var newDevice DeviceInstance
deviceSafeName := sanitizeName(deviceToCreate)
newDevice.deviceType = deviceFileType
newDevice.deviceName = "smarter-devices/" + deviceToCreate
newDevice.socketName = pluginapi.DevicePluginPath + "smarter-" + deviceToCreate + ".sock"
newDevice.deviceName = "smarter-devices/" + deviceSafeName
newDevice.socketName = pluginapi.DevicePluginPath + "smarter-" + deviceSafeName + ".sock"
newDevice.deviceFile = "/dev/" + deviceToCreate
newDevice.numDevices = deviceToTest.NumMaxDevices
listDevicesAvailable = append(listDevicesAvailable, newDevice)