Feature Request: Make Compute Start and Stop More Accessible

[harmathy]

Compute start and stop require a JSON object as parameter, e.g. osc compute server start --os-start <JSON> <ID>. Therefore as a user it is unclear how to start or stop a VM.

• Ideally there should be a default behavior not requiring any parameter other than the ID. Other modes should have simpler parameters (e.g. a hard poweroff something like ... stop --hard <ID>).
• At least the valid structure of the JSON parameter should be explained in detail in the help text.

[gtema]

I totally get this, but it is very hard to do magic when nova exposes the schema as:

# TODO(stephenfin): Restrict the value to 'null' in a future API version
start_server = {
    'type': 'object',
    'properties': {
        'os-start': {},
    },
    'required': ['os-start'],
    'additionalProperties': False,
}

# TODO(stephenfin): Restrict the value to 'null' in a future API version
stop_server = {
    'type': 'object',
    'properties': {
        'os-stop': {},
    },
    'required': ['os-stop'],
    'additionalProperties': False,
}

from the jsonschema pov the {} is an object with everything possible being accepted. I will play around with the generator since I need first to find all cases where the nested object is exposed as {} to ensure nothing else break

[gtema]

there are few more similar occurrences also in the block-storage