Reference_metric parameter for PredictiveLevels?

r.sander · July 1, 2025, 9:50am

why do we need to hardcode a “reference_metric” in the ruleset if we want to use PredictiveLevels?

This was not necessary in the past. The check_levels method got and still gets a metric_name and value.

I have a check plugin where the metric names are not predictable (pun intended).
How would I now implement the ruleset for that?

This is the old ruleset:

github.com

HeinleinSupport/check_mk_extensions/blob/cmk2.3/otrs/web/plugins/wato/otrs.py

#!/usr/bin/env python3
# -*- encoding: utf-8; py-indent-offset: 4 -*-

from cmk.gui.i18n import _
from cmk.gui.valuespec import (
    Dictionary,
    Tuple,
    ListOfStrings,
    TextAscii,
)

from cmk.gui.plugins.wato import (
    rulespec_registry,
    CheckParameterRulespecWithItem,
    Levels,
    RulespecGroupCheckParametersApplications,
)

def _item_spec_otrs():
    return TextAscii(title = _('OTRS Queue Name'))

This file has been truncated. show original

And this is the check plugin:

github.com

HeinleinSupport/check_mk_extensions/blob/cmk2.3/otrs/lib/check_mk/base/plugins/agent_based/otrs.py#L73


      
          if isinstance(paramstate[state], tuple):
              yield from check_levels(
                  total,
                  levels_upper=paramstate[state],
                  metric_name=dsname,
                  label=state,
                  render_func=_render_tickets,
                  notice_only=True,
              )
          elif isinstance(paramstate[state], dict):
              yield from check_levels_predictive(
                  total,
                  levels=paramstate[state],
                  metric_name=dsname,
                  label=state,
                  render_func=_render_tickets,
              )
          else:
              yield Metric(dsname, total)
              yield Result(state=State.OK,
                           notice='%s: %s' % (state, _render_tickets(total)))

Within the application OTRS the admin is able to define their own ticket states. Therefor I cannot pre-define them in a ruleset.

Sara · July 1, 2025, 11:30am

Hi @r.sander !

We are planning one more DevHour where we could discuss all the DevAPI questions.
It is planned for 16th of July, at 3PM. I will announce it with more details beginning of the next week or so.
Maybe we could collect the questions and discuss them on the call if the time works for you?

r.sander · July 1, 2025, 11:56am

Yes, that date works for me. Thanks for the suggestion.

Sara · July 3, 2025, 7:14am

The call is scheduled I have already added your 2 questions into the document.

r.sander · July 16, 2025, 1:21pm

I have to remove the predicted level from the check plugin.