[LOG4J2-2289] XML Schema for DynamicFilterThreshold does not accept multiple KeyValuePairs

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.10.0
• Assignee: Gary D. Gregory
• Reporter: Hari Menon
• Created: 27/Mar/18 22:13
• Updated: 07/Apr/18 18:27
• Resolved: 07/Apr/18 18:24

Description

The log4j-config.xsd file defines KeyValuePairs in Filter as:

<xs:sequence>
<xs:element name="KeyValuePair" type="KeyValuePairType" minOccurs="0"/>
</xs:sequence>

DynamicThresholdFilter can in fact take multiple KeyValuePairs. But that will not pass xsd validation because KeyValuePair is missing 'maxOccurs="unbounded"' attribute.

Example: The following config will fail validation, although it should not:

    <Filter type="DynamicThresholdFilter" key="some-key" defaultThreshold="INFO"
                            onMatch="ACCEPT" onMismatch="NEUTRAL">
      <KeyValuePair key="debug" value="DEBUG"/>
      <KeyValuePair key="trace" value="TRACE"/>
    </Filter>

If I remove one of the KeyValuePairs, it would pass. I use strict=true, and I cannot change that for various other reasons.