@Rebekka, i run into another issue with the input validation 
CMK version: 2.4.0p17.cee
OS version: 2.4.0p17.cee
If you have a rule set with a list of string and a input validation
for the strings in the list, the input validation marks correct
entries as invalid and removes correct entries from the list.
Here the issue in action
Start with a list of four entries, two valid, thow invalid
Try to save the rule, the first invalid entry gets marked as invalied → correct behavior
Remove the marked entry
Try to save again
The input validation finds the the second invalid entry, but marks a valid entry as invalid, adds an empty field at the beginning of the list, and removs the last entry from the list (which was a valid entry).
Here a very basic script to reproduce the issue.
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
from cmk.rulesets.v1 import Title
from cmk.rulesets.v1.form_specs import (
DictElement,
Dictionary,
List,
String,
)
from cmk.rulesets.v1.form_specs.validators import (
Message,
ValidationError,
)
from cmk.rulesets.v1.rule_specs import ActiveCheck, Topic
allowed_hosts = [
'C9540-7-1',
'C9348-7-1',
'C9348-5-2',
]
class ValidateMonitoredHost:
def __call__(self, value: str) -> None:
if value not in allowed_hosts:
raise ValidationError(
Message(f'{value} not allowed. {",".join(allowed_hosts)} are allowed only')
)
def parameter_form_nvdct_test() -> Dictionary:
return Dictionary(
elements={
'seed_devices': DictElement(
parameter_form=List(
title=Title('Seed Devices'),
element_template=String( # should be MonitoredHost
custom_validate=[ValidateMonitoredHost()],
),
)),
})
rule_spec_nvdct_test = ActiveCheck(
topic=Topic.NETWORKING,
title=Title('NVDCT Test'),
name='nvdct_test',
parameter_form=parameter_form_nvdct_test,
)
Cheers
Thomas
