juju_ops_charm_hello_world_install_config_events.py

1import ops
2
3class MyCharm(ops.CharmBase):
4    def __init__(self, *args):
5        super().__init__(*args)
6        self.framework.observe(self.on.install, self._on_install)
7        self.framework.observe(self.on.config_changed, self._on_config_changed)
8
9    def _on_install(self, event):
10        # Handle the install event
11        self.unit.status = ops.ActiveStatus("Installed")
12
13    def _on_config_changed(self, event):
14        # Handle the config-changed event
15        message = self.model.config.get("message", "Hello World")
16        print(f"Config changed: {message}")
17
18if __name__ == "__main__":
19    ops.main(MyCharm)