Fix rendering AlertRulev9 json for possible use in Alerting provisioning API

[ilia-ilin-jiji]

What does this do?

This PR fix generates the correct json for HTTP API requests.

1. Add link alert with dashboard and panel. In AlertRulev9 class exist params panel_id and dashboard_uid but didn't use in json generating.
2. Fix defaults for labels and annotations params because are work incorrectly. If I change param in one alert is changed in all

>>> import attr
>>> @attr.s
... class X:
...     d = attr.ib(default={})
...
>>> a = X()
>>> b = X()
>>> a.d['test']='test'
>>> b
X(d={'test': 'test'})
>>>

3. Add DataSource class for correct generating targets in alert_rule, because API needs this struct:

{
	"datasourceUid": "uid",
	"model": {
		"datasource": {
			"type": "prometheus",
			"uid": "uid"
		}
	}
}

Why is it a good idea?

Context

Questions

[KacperLegowski]

Are you sure that this model is correct? According to this API: https://editor.swagger.io/?url=https://raw.githubusercontent.com/grafana/grafana/main/pkg/services/ngalert/api/tooling/post.json looks that grafana_alert object is required for grafana managed alerts 🤔

[JamesGibo]

Please could you remove this part from the PR

[JDuskey]

#544 Has the correct implementation of this fix. @KacperLegowski is right that alerts need a nested grafana_alert object.

[JamesGibo]

Add document string for these

[JamesGibo]

Thanks for the PR, there looks like there are some really useful improvements in the PR.
Would you be bale to-do the following:

• rebase on master
• Remove the incorrect
• Add documentation strings for the additional fields you have added

[Gnappuraz]

I would be happy to help out on this. I'm currently trying to use the lib to implement alert provisioning via the new API but I'm struggling because of this and other issues.

[Gnappuraz]

Suggested change

"execErrState": self.errorAlertState,

[Gnappuraz]

Suggested change

	:param panel_id: Panel ID that should be use for linking on alert message
	:param panel_id: Panel ID that should be used for linking on alert message
	:param annotations: An array of additional annotations, can be used for alert message
	:param labels: An array of labels, can be used with Notification Policies
	:param folderUid: Folder ID that should be use for linking on alert message
	:param ruleGroup: A group for alerts that are evaluated together

[Gnappuraz]

I would be happy to help out on this. I'm currently trying to use the lib to implement alert provisioning via the new API but I'm struggling because of this and other issues.

[Gnappuraz]

I would be happy to help out on this. I'm currently trying to use the lib to implement alert provisioning via the new API but I'm struggling because of this and other issues.