[feature] Support custom refresh intervals for each group of metrics

[zuobiao-zhou]

What's changed?

close #2188

Support custom refresh intervals for each group of metrics. The specific implementation is as follows:

Within a monitor, metrics with different refresh intervals are divided into different jobs. If a group's metrics do not have a custom refresh interval set, the default refresh interval specified during the monitor's creation will be used.

Implementation result:

Checklist

• I have read the Contributing Guide
• I have written the necessary doc or comment.
• I have added the necessary unit tests and all cases have passed.

[tomsun28]

hi, thanks for contributions. 👍

The one monitor mapping one collect job -> many collect jobs is a big change, we need time to think and design carefully.
This will cause some collection logics on the collector side to fail, such as supporting sequential collection and concurrent collection, using the collection response as a parameter to enter the next collection metrics, etc. System upgrade is also a big hassle.

Previously, I thought the modification direction was in the collector scheduling part, splitting the scheduling time of multiple metrics tasks in a job corresponding to a monitoring.

These two directions need to be carefully considered.

[zuobiao-zhou]

hi, thanks for contributions. 👍

The one monitor mapping one collect job -> many collect jobs is a big change, we need time to think and design carefully. This will cause some collection logics on the collector side to fail, such as supporting sequential collection and concurrent collection, using the collection response as a parameter to enter the next collection metrics, etc. System upgrade is also a big hassle.

Previously, I thought the modification direction was in the collector scheduling part, splitting the scheduling time of multiple metrics tasks in a job corresponding to a monitoring.

These two directions need to be carefully considered.

That makes sense, I'll try to implement the second approach.

[tomsun28]

hi, i draw a job task relation for refer. The main difficulty here is the scheduling of multiple metrics collection under one job. At present, I have not thought of a good way to support custom scheduling time.