osm_common/tests/packages/invalid_package_vnf/Scripts/charms/simple/src/charm.py

   1 #!/usr/bin/env python3
   2 ##
   3 # Copyright 2020 Canonical Ltd.
   4 # All rights reserved.
   5 #
   6 # Licensed under the Apache License, Version 2.0 (the "License"); you may
   7 # not use this file except in compliance with the License. You may obtain
   8 # a copy of the License at
   9 #
  10 #         http://www.apache.org/licenses/LICENSE-2.0
  11 #
  12 # Unless required by applicable law or agreed to in writing, software
  13 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  14 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  15 # License for the specific language governing permissions and limitations
  16 # under the License.
  17 ##
  18
  19 import sys
  20 import subprocess
  21
  22 from ops.charm import CharmBase
  23 from ops.main import main
  24 from ops.model import ActiveStatus
  25
  26 sys.path.append("lib")
  27
  28
  29 class MyNativeCharm(CharmBase):
  30     def __init__(self, framework, key):
  31         super().__init__(framework, key)
  32
  33         # Listen to charm events
  34         self.framework.observe(self.on.config_changed, self.on_config_changed)
  35         self.framework.observe(self.on.install, self.on_install)
  36         self.framework.observe(self.on.start, self.on_start)
  37
  38         # Listen to the touch action event
  39         self.framework.observe(self.on.touch_action, self.on_touch_action)
  40
  41     def on_config_changed(self, event):
  42         """Handle changes in configuration"""
  43         self.model.unit.status = ActiveStatus()
  44
  45     def on_install(self, event):
  46         """Called when the charm is being installed"""
  47         self.model.unit.status = ActiveStatus()
  48
  49     def on_start(self, event):
  50         """Called when the charm is being started"""
  51         self.model.unit.status = ActiveStatus()
  52
  53     def on_touch_action(self, event):
  54         """Touch a file."""
  55
  56         filename = event.params["filename"]
  57         try:
  58             subprocess.run(["touch", filename], check=True)
  59             event.set_results({"created": True, "filename": filename})
  60         except subprocess.CalledProcessError as e:
  61             event.fail("Action failed: {}".format(e))
  62         self.model.unit.status = ActiveStatus()
  63
  64
  65 if __name__ == "__main__":
  66     main(MyNativeCharm)