...

Containerfile

@@ -0,0 +1,9 @@
+FROM registry.opensuse.org/opensuse/tumbleweed:latest
+
+RUN zypper --non-interactive install --no-recommends \
+  python3-kubernetes \
+  python3-pyudev \
+  && zypper clean -a \
+  && rm /var/log/zypper.log
+
+ENV TZ="Europe/Stockholm"

app/alarm.py

@@ -0,0 +1,124 @@
+# encoding: utf-8
+
+'''
+Created on 12/09/2012
+
+@author: dnmellen
+'''
+
+__author__ = "Diego Navarro Mellén"
+__email__ = "dnmellen@gmail.com"
+__version__ = 0.5
+
+import usb
+from usb.core import USBError
+import time
+
+
+### Some auxiliary functions ###
+def _clean_str(s):
+    '''
+    Filter string to allow only alphanumeric chars and spaces
+    
+    @param s: string
+    @return: string
+    '''
+    
+    return ''.join([c for c in s if c.isalnum() or c in {' '}])
+
+
+def _get_dev_string_info(device):
+    '''
+    Human readable device's info
+    
+    @return: string
+    '''
+    
+    try:
+        str_info = _clean_str(usb.util.get_string(device, 256, 2))
+        str_info += ' ' + _clean_str(usb.util.get_string(device, 256, 3))
+        return str_info
+    except USBError:
+        return str_info
+    
+    
+def get_usb_devices():
+    '''
+    Get USB devices
+    
+    @return: list of tuples (dev_idVendor, dev_idProduct, dev_name)
+    '''
+    
+    return [(device.idVendor, device.idProduct, _get_dev_string_info(device)) 
+                for device in usb.core.find(find_all=True)
+                    if device.idProduct > 2]
+        
+        
+class USBAlarm(object):
+    '''
+    USB Alarm Class
+    '''
+    
+    
+    def __init__(self, devices=None, payload=None, check_interval=0.5):
+        '''
+        Constructor
+        
+        @param devices: list of tuples (dev_idVendor, dev_idProduct, dev_name)
+        @param payload: function to call if any device is disconnected
+        @param check_interval: number of secs to wait in each check
+        '''
+        
+        self.devices = devices or []
+        self.payload = payload
+        self.check_interval = check_interval
+
+
+    def is_any_disconnected(self):
+        '''
+        Check if any device has been disconnected.
+        
+        @return: True if found any device unplugged
+        '''
+        
+        return not all([usb.core.find(idVendor=device[0], idProduct=device[1])
+                        for device in self.devices])
+
+
+    def run(self):
+        '''
+        Make sure every device is plugged in an infinite loop
+        '''
+        
+        while True:
+            if self.is_any_disconnected() and self.payload:
+                self.payload()
+            time.sleep(self.check_interval)
+
+def dummy_payload():
+    print("kallekalas")
+
+if __name__ == '__main__':
+   
+    # Catch signal CTRL+C to exit test
+    import signal
+    import sys
+
+    def signal_handler(signal, frame):
+        print( 'You Pressed CTRL+C')
+        sys.exit(0)
+
+    signal.signal(signal.SIGINT, signal_handler)
+ 
+    # Dummy test
+    #from payloads import play_sound
+    print ("* Exploring devices")
+    devices = get_usb_devices()
+    for d in devices:
+        print (d[2])
+    print ("===================")
+    print ("Monitoring USB devices... (Press CTRL+C for exit)")
+    a = USBAlarm(devices=devices, payload=dummy_payload)
+    # a = USBAlarm(devices=devices, payload=play_sound.payload)
+    a.run()
+

app/check_usb.py

@@ -0,0 +1,40 @@
+import usb
+from usb.core import USBError
+
+### Some auxiliary functions ###
+def _clean_str(s):
+    '''
+    Filter string to allow only alphanumeric chars and spaces
+
+    @param s: string
+    @return: string
+    '''
+
+    return ''.join([c for c in s if c.isalnum() or c in {' '}])
+
+
+def _get_dev_string_info(device):
+    '''
+    Human readable device's info
+
+    @return: string
+    '''
+
+    try:
+        str_info = _clean_str(usb.util.get_string(device, 256, 2))
+        str_info += ' ' + _clean_str(usb.util.get_string(device, 256, 3))
+        return str_info
+    except USBError:
+        return str_info
+
+
+def get_usb_devices():
+    '''
+    Get USB devices
+
+    @return: list of tuples (dev_idVendor, dev_idProduct, dev_name)
+    '''
+
+    return [(device.idVendor, device.idProduct, _get_dev_string_info(device)) 
+                for device in usb.core.find(find_all=True)
+                    if device.idProduct > 2]

app/monitor.py

@@ -0,0 +1,49 @@
+import pyudev
+import signal
+import logging
+import sys
+import os
+
+
+def on_usb_attached(device):
+    print(f"USB device attached: {device.device_node or device.sys_name}")
+
+def on_usb_detached(device):
+    print(f"USB device detached: {device.device_node or device.sys_name}")
+
+def list_current_usb_devices():
+    print("Currently attached USB devices:")
+    context = pyudev.Context()
+    for device in context.list_devices(subsystem='usb', DEVTYPE='usb_device'):
+        print(f"- {device.device_node or device.sys_name} ({device.get('ID_MODEL', 'Unknown Device')})")
+    print()
+
+def monitor_usb():
+    context = pyudev.Context()
+    monitor = pyudev.Monitor.from_netlink(context)
+    monitor.filter_by(subsystem='usb')  # Only USB devices
+
+    for device in iter(monitor.poll, None):
+        if device.action == 'add':
+            on_usb_attached(device)
+        elif device.action == 'remove':
+            on_usb_detached(device)
+
+def signal_handler(sig, frame):
+    print("\nStopping USB monitor...")
+    sys.exit(0)
+
+if __name__ == "__main__":
+    logging.basicConfig(format='%(asctime)s %(message)s', level=logging.INFO)
+    try:
+        CURRENT_NODE_NAME=os.environ['CURRENT_NODE_NAME']
+        logging.info(f"Starging USB-watch on {CURRENT_NODE_NAME}")
+    except KeyError:
+        logging.error('Environment variabel CURRENT_NODE_NAME is not set')
+        sys.exit(1)
+    signal.signal(signal.SIGINT, signal_handler)
+
+    list_current_usb_devices()
+    logging.info("Monitoring USB device changes......")
+
+    monitor_usb()

daemonset.yaml

@@ -0,0 +1,28 @@
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: dongle-watch
+  namespace: dongle-watch
+spec:
+  selector:
+    matchLabels:
+      name: dongle-watch
+  template:
+    metadata:
+      labels:
+        name: dongle-watch
+    spec:
+      containers:
+      - name: dongle-watch
+        image: repo.rre.nu/library/dongle-watch:latest
+        env:
+        - name: RUNNIN_NODE_NAME
+          valueFrom:
+            fieldRef:
+              fieldPath: spec.nodeName
+        resources:
+          limits:
+            cpu: 200Mi
+          requests:
+            cpu: 100m
+            memory: 200Mi

helm/.helmignore

@@ -0,0 +1,23 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

helm/Chart.yaml

@@ -0,0 +1,24 @@
+apiVersion: v2
+name: usb-watch
+description: A daemonset to watch for USB-dongles to be added or removed and adds/removes annotations
+
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+type: application
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 0.1.0
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+# It is recommended to use it with quotes.
+appVersion: "0.1.0"

helm/templates/NOTES.txt

@@ -0,0 +1,22 @@
+1. Get the application URL by running these commands:
+{{- if .Values.ingress.enabled }}
+{{- range $host := .Values.ingress.hosts }}
+  {{- range .paths }}
+  http{{ if $.Values.ingress.tls }}s{{ end }}://{{ $host.host }}{{ .path }}
+  {{- end }}
+{{- end }}
+{{- else if contains "NodePort" .Values.service.type }}
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "usb-watch.fullname" . }})
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+  echo http://$NODE_IP:$NODE_PORT
+{{- else if contains "LoadBalancer" .Values.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch its status by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "usb-watch.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "usb-watch.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
+  echo http://$SERVICE_IP:{{ .Values.service.port }}
+{{- else if contains "ClusterIP" .Values.service.type }}
+  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "usb-watch.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  export CONTAINER_PORT=$(kubectl get pod --namespace {{ .Release.Namespace }} $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}")
+  echo "Visit http://127.0.0.1:8080 to use your application"
+  kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:$CONTAINER_PORT
+{{- end }}

helm/templates/_helpers.tpl

@@ -0,0 +1,62 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "usb-watch.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "usb-watch.fullname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- $name := default .Chart.Name .Values.nameOverride }}
+{{- if contains $name .Release.Name }}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "usb-watch.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "usb-watch.labels" -}}
+helm.sh/chart: {{ include "usb-watch.chart" . }}
+{{ include "usb-watch.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "usb-watch.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "usb-watch.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "usb-watch.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "usb-watch.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

helm/templates/daemonset.yaml

@@ -0,0 +1,49 @@
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: {{ include "usb-watch.fullname" . }}
+  labels:
+    {{- include "usb-watch.labels" . | nindent 4 }}
+spec:
+  {{- if not .Values.autoscaling.enabled }}
+  replicas: {{ .Values.replicaCount }}
+  {{- end }}
+  selector:
+    matchLabels:
+      {{- include "usb-watch.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "usb-watch.labels" . | nindent 8 }}
+        {{- with .Values.podLabels }}
+        {{- toYaml . | nindent 8 }}
+        {{- end }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "usb-watch.serviceAccountName" . }}
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+            privileged: true
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          livenessProbe:
+            {{- toYaml .Values.livenessProbe | nindent 12 }}
+          readinessProbe:
+            {{- toYaml .Values.readinessProbe | nindent 12 }}
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+          volumeMounts:
+            - mountPath: /dev/bus/usb
+              name: usb
+      volumes:
+        - name: usb
+          hostPath:
+            path: /dev/bus/usb

helm/templates/serviceaccount.yaml

@@ -0,0 +1,13 @@
+{{- if .Values.serviceAccount.create -}}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ include "usb-watch.serviceAccountName" . }}
+  labels:
+    {{- include "usb-watch.labels" . | nindent 4 }}
+  {{- with .Values.serviceAccount.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+automountServiceAccountToken: {{ .Values.serviceAccount.automount }}
+{{- end }}

helm/values.yaml

@@ -0,0 +1,61 @@
+# Default values for usb-watch.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+# This will set the replicaset count more information can be found here: https://kubernetes.io/docs/concepts/workloads/controllers/replicaset/
+replicaCount: 1
+
+# This sets the container image more information can be found here: https://kubernetes.io/docs/concepts/containers/images/
+image:
+  repository: repo.rre.nu/library/usb-watch
+  # This sets the pull policy for images.
+  pullPolicy: IfNotPresent
+  # Overrides the image tag whose default is the chart appVersion.
+  tag: ""
+
+# This is for the secretes for pulling an image from a private repository more information can be found here: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
+imagePullSecrets: []
+# This is to override the chart name.
+nameOverride: ""
+fullnameOverride: ""
+
+#This section builds out the service account more information can be found here: https://kubernetes.io/docs/concepts/security/service-accounts/
+serviceAccount:
+  # Specifies whether a service account should be created
+  create: true
+  # Automatically mount a ServiceAccount's API credentials?
+  automount: true
+  # Annotations to add to the service account
+  annotations: {}
+  # The name of the service account to use.
+  # If not set and create is true, a name is generated using the fullname template
+  name: ""
+
+# This is for setting Kubernetes Annotations to a Pod.
+# For more information checkout: https://kubernetes.io/docs/concepts/overview/working-with-objects/annotations/ 
+podAnnotations: {}
+# This is for setting Kubernetes Labels to a Pod.
+# For more information checkout: https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/
+podLabels: {}
+
+resources: {}
+  # We usually recommend not to specify default resources and to leave this as a conscious
+  # choice for the user. This also increases chances charts run on environments with little
+  # resources, such as Minikube. If you do want to specify resources, uncomment the following
+  # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
+  # limits:
+  #   cpu: 100m
+  #   memory: 128Mi
+  # requests:
+  #   cpu: 100m
+  #   memory: 128Mi
+
+# This is to setup the liveness and readiness probes more information can be found here: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/
+livenessProbe:
+  httpGet:
+    path: /
+    port: http
+readinessProbe:
+  httpGet:
+    path: /
+    port: http